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authorBenedikt Boehm <hollow@gentoo.org>2007-03-25 17:21:21 +0000
committerBenedikt Boehm <hollow@gentoo.org>2007-03-25 17:21:21 +0000
commit1732a6f66ab9016689288e335f296a0d6dcf1035 (patch)
tree31482d7017908e129269a3d790bceab164e6b064
parentRemoving. (diff)
downloadmisc-1732a6f66ab9016689288e335f296a0d6dcf1035.tar.gz
misc-1732a6f66ab9016689288e335f296a0d6dcf1035.tar.bz2
misc-1732a6f66ab9016689288e335f296a0d6dcf1035.zip
version bump
svn path=/; revision=548
-rw-r--r--vserver-sources/2.2.0_rc20/4410_vs2.2.0-rc20.patch28101
1 files changed, 28101 insertions, 0 deletions
diff --git a/vserver-sources/2.2.0_rc20/4410_vs2.2.0-rc20.patch b/vserver-sources/2.2.0_rc20/4410_vs2.2.0-rc20.patch
new file mode 100644
index 0000000..9e168d2
--- /dev/null
+++ b/vserver-sources/2.2.0_rc20/4410_vs2.2.0-rc20.patch
@@ -0,0 +1,28101 @@
+diff -NurpP --minimal linux-2.6.20.4/Documentation/vserver/debug.txt linux-2.6.20.4-vs2.2.0-rc20/Documentation/vserver/debug.txt
+--- linux-2.6.20.4/Documentation/vserver/debug.txt 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/Documentation/vserver/debug.txt 2007-02-06 03:05:21 +0100
+@@ -0,0 +1,154 @@
++
++debug_cvirt:
++
++ 2 4 "vx_map_tgid: %p/%llx: %d -> %d"
++ "vx_rmap_tgid: %p/%llx: %d -> %d"
++
++debug_dlim:
++
++ 0 1 "ALLOC (%p,#%d)%c inode (%d)"
++ "FREE (%p,#%d)%c inode"
++ 1 2 "ALLOC (%p,#%d)%c %lld bytes (%d)"
++ "FREE (%p,#%d)%c %lld bytes"
++ 2 4 "ADJUST: %lld,%lld on %ld,%ld [mult=%d]"
++ 3 8 "ext3_has_free_blocks(%p): %lu<%lu+1, %c, %u!=%u r=%d"
++ "ext3_has_free_blocks(%p): free=%lu, root=%lu"
++ "rcu_free_dl_info(%p)"
++ 4 10 "alloc_dl_info(%p,%d) = %p"
++ "dealloc_dl_info(%p)"
++ "get_dl_info(%p[#%d.%d])"
++ "put_dl_info(%p[#%d.%d])"
++ 5 20 "alloc_dl_info(%p,%d)*"
++ 6 40 "__hash_dl_info: %p[#%d]"
++ "__unhash_dl_info: %p[#%d]"
++ 7 80 "locate_dl_info(%p,#%d) = %p"
++
++debug_misc:
++
++ 0 1 "destroy_dqhash: %p [#0x%08x] c=%d"
++ "new_dqhash: %p [#0x%08x]"
++ "vroot[%d]_clr_dev: dev=%p[%lu,%d:%d]"
++ "vroot[%d]_get_real_bdev: dev=%p[%lu,%d:%d]"
++ "vroot[%d]_set_dev: dev=%p[%lu,%d:%d]"
++ "vroot_get_real_bdev not set"
++ 1 2 "cow_break_link(%s)"
++ "temp copy %s"
++ 2 4 "dentry_open(new): %p"
++ "dentry_open(old): %p"
++ "lookup_create(new): %p"
++ "old path %s"
++ "path_lookup(old): %d"
++ "vfs_create(new): %d"
++ "vfs_rename: %d"
++ "vfs_sendfile: %d"
++ 3 8 "fput(new_file=%p[#%d])"
++ "fput(old_file=%p[#%d])"
++ 4 10 "vx_info_kill(%p[#%d],%d,%d) = %d"
++ "vx_info_kill(%p[#%d],%d,%d)*"
++ 5 20 "vs_reboot(%p[#%d],%d)"
++ 6 40 "dropping task %p[#%u,%u] for %p[#%u,%u]"
++
++debug_net:
++
++ 2 4 "nx_addr_conflict(%p,%p) %d.%d,%d.%d"
++ 3 8 "inet_bind(%p) %d.%d.%d.%d, %d.%d.%d.%d, %d.%d.%d.%d"
++ "inet_bind(%p)* %p,%p;%lx %d.%d.%d.%d"
++ 4 10 "ip_route_connect(%p) %p,%p;%lx"
++ 5 20 "__addr_in_socket(%p,%d.%d.%d.%d) %p:%d.%d.%d.%d %p;%lx"
++ 6 40 "sk,egf: %p [#%d] (from %d)"
++ "sk,egn: %p [#%d] (from %d)"
++ "sk,req: %p [#%d] (from %d)"
++ "sk: %p [#%d] (from %d)"
++ "tw: %p [#%d] (from %d)"
++ 7 80 "__sock_recvmsg: %p[%p,%p,%p;%d]:%d/%d"
++ "__sock_sendmsg: %p[%p,%p,%p;%d]:%d/%d"
++
++debug_nid:
++
++ 0 1 "__lookup_nx_info(#%u): %p[#%u]"
++ "alloc_nx_info(%d) = %p"
++ "create_nx_info(%d) (dynamic rejected)"
++ "create_nx_info(%d) = %p (already there)"
++ "create_nx_info(%d) = %p (new)"
++ "dealloc_nx_info(%p)"
++ 1 2 "alloc_nx_info(%d)*"
++ "create_nx_info(%d)*"
++ 2 4 "get_nx_info(%p[#%d.%d])"
++ "put_nx_info(%p[#%d.%d])"
++ 3 8 "claim_nx_info(%p[#%d.%d.%d]) %p"
++ "clr_nx_info(%p[#%d.%d])"
++ "init_nx_info(%p[#%d.%d])"
++ "release_nx_info(%p[#%d.%d.%d]) %p"
++ "set_nx_info(%p[#%d.%d])"
++ 4 10 "__hash_nx_info: %p[#%d]"
++ "__nx_dynamic_id: [#%d]"
++ "__unhash_nx_info: %p[#%d.%d.%d]"
++ 5 20 "moved task %p into nxi:%p[#%d]"
++ "nx_migrate_task(%p,%p[#%d.%d.%d])"
++ "task_get_nx_info(%p)"
++ 6 40 "nx_clear_persistent(%p[#%d])"
++
++debug_quota:
++
++ 0 1 "quota_sync_dqh(%p,%d) discard inode %p"
++ 1 2 "quota_sync_dqh(%p,%d)"
++ "sync_dquots(%p,%d)"
++ "sync_dquots_dqh(%p,%d)"
++ 3 8 "do_quotactl(%p,%d,cmd=%d,id=%d,%p)"
++
++debug_switch:
++
++ 0 1 "vc: VCMD_%02d_%d[%d], %d,%p [%d,%d,%x,%x]"
++ 1 2 "vc: VCMD_%02d_%d[%d] = %08lx(%ld) [%d,%d]"
++ 4 10 "%s: (%s %s) returned %s with %d"
++
++debug_tag:
++
++ 7 80 "dx_parse_tag(%s): %d:#%d"
++ "dx_propagate_tag(%p[#%lu.%d]): %d,%d"
++
++debug_xid:
++
++ 0 1 "__lookup_vx_info(#%u): %p[#%u]"
++ "alloc_vx_info(%d) = %p"
++ "alloc_vx_info(%d)*"
++ "create_vx_info(%d) (dynamic rejected)"
++ "create_vx_info(%d) = %p (already there)"
++ "create_vx_info(%d) = %p (new)"
++ "dealloc_vx_info(%p)"
++ "loc_vx_info(%d) = %p (found)"
++ "loc_vx_info(%d) = %p (new)"
++ "loc_vx_info(%d) = %p (not available)"
++ 1 2 "create_vx_info(%d)*"
++ "loc_vx_info(%d)*"
++ 2 4 "get_vx_info(%p[#%d.%d])"
++ "put_vx_info(%p[#%d.%d])"
++ 3 8 "claim_vx_info(%p[#%d.%d.%d]) %p"
++ "clr_vx_info(%p[#%d.%d])"
++ "init_vx_info(%p[#%d.%d])"
++ "release_vx_info(%p[#%d.%d.%d]) %p"
++ "set_vx_info(%p[#%d.%d])"
++ 4 10 "__hash_vx_info: %p[#%d]"
++ "__unhash_vx_info: %p[#%d.%d.%d]"
++ "__vx_dynamic_id: [#%d]"
++ 5 20 "enter_vx_info(%p[#%d],%p) %p[#%d,%p]"
++ "leave_vx_info(%p[#%d,%p]) %p[#%d,%p]"
++ "moved task %p into vxi:%p[#%d]"
++ "task_get_vx_info(%p)"
++ "vx_migrate_task(%p,%p[#%d.%d])"
++ 6 40 "vx_clear_persistent(%p[#%d])"
++ "vx_exit_init(%p[#%d],%p[#%d,%d,%d])"
++ "vx_set_init(%p[#%d],%p[#%d,%d,%d])"
++ "vx_set_persistent(%p[#%d])"
++ "vx_set_reaper(%p[#%d],%p[#%d,%d])"
++ 7 80 "vx_child_reaper(%p[#%u,%u]) = %p[#%u,%u]"
++
++
++debug_limit:
++
++ n 2^n "vx_acc_cres[%5d,%s,%2d]: %5d%s"
++ "vx_cres_avail[%5d,%s,%2d]: %5ld > %5d + %5d"
++
++ m 2^m "vx_acc_page[%5d,%s,%2d]: %5d%s"
++ "vx_acc_pages[%5d,%s,%2d]: %5d += %5d"
++ "vx_pages_avail[%5d,%s,%2d]: %5ld > %5d + %5d"
+diff -NurpP --minimal linux-2.6.20.4/Makefile linux-2.6.20.4-vs2.2.0-rc20/Makefile
+--- linux-2.6.20.4/Makefile 2007-03-25 00:56:54 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/Makefile 2007-03-25 01:00:14 +0100
+@@ -1,7 +1,7 @@
+ VERSION = 2
+ PATCHLEVEL = 6
+ SUBLEVEL = 20
+-EXTRAVERSION =
++EXTRAVERSION = -vs2.2.0-rc20-gentoo
+ NAME = Homicidal Dwarf Hamster
+
+ # *DOCUMENTATION*
+diff -NurpP --minimal linux-2.6.20.4/arch/alpha/Kconfig linux-2.6.20.4-vs2.2.0-rc20/arch/alpha/Kconfig
+--- linux-2.6.20.4/arch/alpha/Kconfig 2007-02-06 02:59:58 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/alpha/Kconfig 2007-02-06 03:05:21 +0100
+@@ -640,6 +640,8 @@ source "arch/alpha/oprofile/Kconfig"
+
+ source "arch/alpha/Kconfig.debug"
+
++source "kernel/vserver/Kconfig"
++
+ source "security/Kconfig"
+
+ source "crypto/Kconfig"
+diff -NurpP --minimal linux-2.6.20.4/arch/alpha/kernel/asm-offsets.c linux-2.6.20.4-vs2.2.0-rc20/arch/alpha/kernel/asm-offsets.c
+--- linux-2.6.20.4/arch/alpha/kernel/asm-offsets.c 2006-02-15 13:54:10 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/alpha/kernel/asm-offsets.c 2007-02-06 03:05:21 +0100
+@@ -36,6 +36,7 @@ void foo(void)
+ DEFINE(PT_PTRACED, PT_PTRACED);
+ DEFINE(CLONE_VM, CLONE_VM);
+ DEFINE(CLONE_UNTRACED, CLONE_UNTRACED);
++ DEFINE(CLONE_KTHREAD, CLONE_KTHREAD);
+ DEFINE(SIGCHLD, SIGCHLD);
+ BLANK();
+
+diff -NurpP --minimal linux-2.6.20.4/arch/alpha/kernel/entry.S linux-2.6.20.4-vs2.2.0-rc20/arch/alpha/kernel/entry.S
+--- linux-2.6.20.4/arch/alpha/kernel/entry.S 2006-11-30 21:18:23 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/alpha/kernel/entry.S 2007-02-06 03:05:21 +0100
+@@ -644,7 +644,7 @@ kernel_thread:
+ stq $2, 152($sp) /* HAE */
+
+ /* Shuffle FLAGS to the front; add CLONE_VM. */
+- ldi $1, CLONE_VM|CLONE_UNTRACED
++ ldi $1, CLONE_VM | CLONE_UNTRACED | CLONE_KTHREAD;
+ or $18, $1, $16
+ bsr $26, sys_clone
+
+@@ -873,24 +873,15 @@ sys_getxgid:
+ .globl sys_getxpid
+ .ent sys_getxpid
+ sys_getxpid:
++ lda $sp, -16($sp)
++ stq $26, 0($sp)
+ .prologue 0
+- ldq $2, TI_TASK($8)
+
+- /* See linux/kernel/timer.c sys_getppid for discussion
+- about this loop. */
+- ldq $3, TASK_GROUP_LEADER($2)
+- ldq $4, TASK_REAL_PARENT($3)
+- ldl $0, TASK_TGID($2)
+-1: ldl $1, TASK_TGID($4)
+-#ifdef CONFIG_SMP
+- mov $4, $5
+- mb
+- ldq $3, TASK_GROUP_LEADER($2)
+- ldq $4, TASK_REAL_PARENT($3)
+- cmpeq $4, $5, $5
+- beq $5, 1b
+-#endif
+- stq $1, 80($sp)
++ lda $16, 96($sp)
++ jsr $26, do_getxpid
++ ldq $26, 0($sp)
++
++ lda $sp, 16($sp)
+ ret
+ .end sys_getxpid
+
+diff -NurpP --minimal linux-2.6.20.4/arch/alpha/kernel/osf_sys.c linux-2.6.20.4-vs2.2.0-rc20/arch/alpha/kernel/osf_sys.c
+--- linux-2.6.20.4/arch/alpha/kernel/osf_sys.c 2007-02-06 02:59:58 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/alpha/kernel/osf_sys.c 2007-02-06 03:05:21 +0100
+@@ -885,7 +885,7 @@ osf_gettimeofday(struct timeval32 __user
+ {
+ if (tv) {
+ struct timeval ktv;
+- do_gettimeofday(&ktv);
++ vx_gettimeofday(&ktv);
+ if (put_tv32(tv, &ktv))
+ return -EFAULT;
+ }
+diff -NurpP --minimal linux-2.6.20.4/arch/alpha/kernel/ptrace.c linux-2.6.20.4-vs2.2.0-rc20/arch/alpha/kernel/ptrace.c
+--- linux-2.6.20.4/arch/alpha/kernel/ptrace.c 2006-04-09 13:49:39 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/alpha/kernel/ptrace.c 2007-02-06 03:05:21 +0100
+@@ -15,6 +15,7 @@
+ #include <linux/slab.h>
+ #include <linux/security.h>
+ #include <linux/signal.h>
++#include <linux/vs_base.h>
+
+ #include <asm/uaccess.h>
+ #include <asm/pgtable.h>
+@@ -283,6 +284,11 @@ do_sys_ptrace(long request, long pid, lo
+ goto out_notsk;
+ }
+
++ if (!vx_check(vx_task_xid(child), VS_WATCH_P|VS_IDENT)) {
++ ret = -EPERM;
++ goto out;
++ }
++
+ if (request == PTRACE_ATTACH) {
+ ret = ptrace_attach(child);
+ goto out;
+diff -NurpP --minimal linux-2.6.20.4/arch/alpha/kernel/semaphore.c linux-2.6.20.4-vs2.2.0-rc20/arch/alpha/kernel/semaphore.c
+--- linux-2.6.20.4/arch/alpha/kernel/semaphore.c 2004-08-14 12:55:32 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/alpha/kernel/semaphore.c 2007-02-06 03:05:21 +0100
+@@ -68,8 +68,8 @@ __down_failed(struct semaphore *sem)
+ DECLARE_WAITQUEUE(wait, tsk);
+
+ #ifdef CONFIG_DEBUG_SEMAPHORE
+- printk("%s(%d): down failed(%p)\n",
+- tsk->comm, tsk->pid, sem);
++ printk("%s(%d:#%u): down failed(%p)\n",
++ tsk->comm, tsk->pid, tsk->xid, sem);
+ #endif
+
+ tsk->state = TASK_UNINTERRUPTIBLE;
+@@ -97,8 +97,8 @@ __down_failed(struct semaphore *sem)
+ wake_up(&sem->wait);
+
+ #ifdef CONFIG_DEBUG_SEMAPHORE
+- printk("%s(%d): down acquired(%p)\n",
+- tsk->comm, tsk->pid, sem);
++ printk("%s(%d:#%u): down acquired(%p)\n",
++ tsk->comm, tsk->pid, tsk->xid, sem);
+ #endif
+ }
+
+@@ -110,8 +110,8 @@ __down_failed_interruptible(struct semap
+ long ret = 0;
+
+ #ifdef CONFIG_DEBUG_SEMAPHORE
+- printk("%s(%d): down failed(%p)\n",
+- tsk->comm, tsk->pid, sem);
++ printk("%s(%d:#%u): down failed(%p)\n",
++ tsk->comm, tsk->pid, tsk->xid, sem);
+ #endif
+
+ tsk->state = TASK_INTERRUPTIBLE;
+diff -NurpP --minimal linux-2.6.20.4/arch/alpha/kernel/systbls.S linux-2.6.20.4-vs2.2.0-rc20/arch/alpha/kernel/systbls.S
+--- linux-2.6.20.4/arch/alpha/kernel/systbls.S 2006-11-30 21:18:23 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/alpha/kernel/systbls.S 2007-02-06 03:05:21 +0100
+@@ -446,7 +446,7 @@ sys_call_table:
+ .quad sys_stat64 /* 425 */
+ .quad sys_lstat64
+ .quad sys_fstat64
+- .quad sys_ni_syscall /* sys_vserver */
++ .quad sys_vserver /* sys_vserver */
+ .quad sys_ni_syscall /* sys_mbind */
+ .quad sys_ni_syscall /* sys_get_mempolicy */
+ .quad sys_ni_syscall /* sys_set_mempolicy */
+diff -NurpP --minimal linux-2.6.20.4/arch/alpha/kernel/traps.c linux-2.6.20.4-vs2.2.0-rc20/arch/alpha/kernel/traps.c
+--- linux-2.6.20.4/arch/alpha/kernel/traps.c 2006-09-20 16:57:57 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/alpha/kernel/traps.c 2007-02-06 03:05:21 +0100
+@@ -182,7 +182,8 @@ die_if_kernel(char * str, struct pt_regs
+ #ifdef CONFIG_SMP
+ printk("CPU %d ", hard_smp_processor_id());
+ #endif
+- printk("%s(%d): %s %ld\n", current->comm, current->pid, str, err);
++ printk("%s(%d[#%u]): %s %ld\n", current->comm,
++ current->pid, current->xid, str, err);
+ dik_show_regs(regs, r9_15);
+ dik_show_trace((unsigned long *)(regs+1));
+ dik_show_code((unsigned int *)regs->pc);
+diff -NurpP --minimal linux-2.6.20.4/arch/alpha/mm/fault.c linux-2.6.20.4-vs2.2.0-rc20/arch/alpha/mm/fault.c
+--- linux-2.6.20.4/arch/alpha/mm/fault.c 2007-02-06 02:59:58 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/alpha/mm/fault.c 2007-03-10 18:02:51 +0100
+@@ -198,8 +198,8 @@ do_page_fault(unsigned long address, uns
+ down_read(&mm->mmap_sem);
+ goto survive;
+ }
+- printk(KERN_ALERT "VM: killing process %s(%d)\n",
+- current->comm, current->pid);
++ printk(KERN_ALERT "VM: killing process %s(%d:#%u)\n",
++ current->comm, current->pid, current->xid);
+ if (!user_mode(regs))
+ goto no_context;
+ do_exit(SIGKILL);
+diff -NurpP --minimal linux-2.6.20.4/arch/arm/Kconfig linux-2.6.20.4-vs2.2.0-rc20/arch/arm/Kconfig
+--- linux-2.6.20.4/arch/arm/Kconfig 2007-02-06 02:59:58 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/arm/Kconfig 2007-02-06 03:05:21 +0100
+@@ -970,6 +970,8 @@ source "arch/arm/oprofile/Kconfig"
+
+ source "arch/arm/Kconfig.debug"
+
++source "kernel/vserver/Kconfig"
++
+ source "security/Kconfig"
+
+ source "crypto/Kconfig"
+diff -NurpP --minimal linux-2.6.20.4/arch/arm/kernel/calls.S linux-2.6.20.4-vs2.2.0-rc20/arch/arm/kernel/calls.S
+--- linux-2.6.20.4/arch/arm/kernel/calls.S 2007-02-06 02:59:59 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/arm/kernel/calls.S 2007-02-06 03:05:21 +0100
+@@ -322,7 +322,7 @@
+ /* 310 */ CALL(sys_request_key)
+ CALL(sys_keyctl)
+ CALL(ABI(sys_semtimedop, sys_oabi_semtimedop))
+-/* vserver */ CALL(sys_ni_syscall)
++ CALL(sys_vserver)
+ CALL(sys_ioprio_set)
+ /* 315 */ CALL(sys_ioprio_get)
+ CALL(sys_inotify_init)
+diff -NurpP --minimal linux-2.6.20.4/arch/arm/kernel/process.c linux-2.6.20.4-vs2.2.0-rc20/arch/arm/kernel/process.c
+--- linux-2.6.20.4/arch/arm/kernel/process.c 2007-02-06 02:59:59 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/arm/kernel/process.c 2007-02-06 03:05:21 +0100
+@@ -246,7 +246,8 @@ void __show_regs(struct pt_regs *regs)
+ void show_regs(struct pt_regs * regs)
+ {
+ printk("\n");
+- printk("Pid: %d, comm: %20s\n", current->pid, current->comm);
++ printk("Pid: %d[#%u], comm: %20s\n",
++ current->pid, current->xid, current->comm);
+ __show_regs(regs);
+ __backtrace();
+ }
+@@ -408,7 +409,8 @@ pid_t kernel_thread(int (*fn)(void *), v
+ regs.ARM_pc = (unsigned long)kernel_thread_helper;
+ regs.ARM_cpsr = SVC_MODE;
+
+- return do_fork(flags|CLONE_VM|CLONE_UNTRACED, 0, &regs, 0, NULL, NULL);
++ return do_fork(flags | CLONE_VM | CLONE_UNTRACED | CLONE_KTHREAD,
++ 0, &regs, 0, NULL, NULL);
+ }
+ EXPORT_SYMBOL(kernel_thread);
+
+diff -NurpP --minimal linux-2.6.20.4/arch/arm/kernel/traps.c linux-2.6.20.4-vs2.2.0-rc20/arch/arm/kernel/traps.c
+--- linux-2.6.20.4/arch/arm/kernel/traps.c 2007-02-06 02:59:59 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/arm/kernel/traps.c 2007-02-06 03:05:21 +0100
+@@ -206,8 +206,8 @@ static void __die(const char *str, int e
+ printk("Internal error: %s: %x [#%d]\n", str, err, ++die_counter);
+ print_modules();
+ __show_regs(regs);
+- printk("Process %s (pid: %d, stack limit = 0x%p)\n",
+- tsk->comm, tsk->pid, thread + 1);
++ printk("Process %s (pid: %d:#%u, stack limit = 0x%p)\n",
++ tsk->comm, tsk->pid, tsk->xid, thread + 1);
+
+ if (!user_mode(regs) || in_interrupt()) {
+ dump_mem("Stack: ", regs->ARM_sp,
+diff -NurpP --minimal linux-2.6.20.4/arch/arm/mm/fault.c linux-2.6.20.4-vs2.2.0-rc20/arch/arm/mm/fault.c
+--- linux-2.6.20.4/arch/arm/mm/fault.c 2007-02-06 03:00:01 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/arm/mm/fault.c 2007-03-10 18:02:51 +0100
+@@ -267,7 +267,8 @@ do_page_fault(unsigned long addr, unsign
+ * happened to us that made us unable to handle
+ * the page fault gracefully.
+ */
+- printk("VM: killing process %s\n", tsk->comm);
++ printk("VM: killing process %s(%d:#%u)\n",
++ tsk->comm, tsk->pid, tsk->xid);
+ do_exit(SIGKILL);
+ return 0;
+
+diff -NurpP --minimal linux-2.6.20.4/arch/arm26/Kconfig linux-2.6.20.4-vs2.2.0-rc20/arch/arm26/Kconfig
+--- linux-2.6.20.4/arch/arm26/Kconfig 2007-02-06 03:00:02 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/arm26/Kconfig 2007-02-06 03:05:21 +0100
+@@ -242,6 +242,8 @@ source "drivers/usb/Kconfig"
+
+ source "arch/arm26/Kconfig.debug"
+
++source "kernel/vserver/Kconfig"
++
+ source "security/Kconfig"
+
+ source "crypto/Kconfig"
+diff -NurpP --minimal linux-2.6.20.4/arch/arm26/kernel/calls.S linux-2.6.20.4-vs2.2.0-rc20/arch/arm26/kernel/calls.S
+--- linux-2.6.20.4/arch/arm26/kernel/calls.S 2005-03-02 12:38:19 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/arm26/kernel/calls.S 2007-02-06 03:05:21 +0100
+@@ -257,6 +257,11 @@ __syscall_start:
+ .long sys_lremovexattr
+ .long sys_fremovexattr
+ .long sys_tkill
++
++ .rept 313 - (. - __syscall_start) / 4
++ .long sys_ni_syscall
++ .endr
++ .long sys_vserver /* 313 */
+ __syscall_end:
+
+ .rept NR_syscalls - (__syscall_end - __syscall_start) / 4
+diff -NurpP --minimal linux-2.6.20.4/arch/arm26/kernel/process.c linux-2.6.20.4-vs2.2.0-rc20/arch/arm26/kernel/process.c
+--- linux-2.6.20.4/arch/arm26/kernel/process.c 2006-09-20 16:57:57 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/arm26/kernel/process.c 2007-02-06 03:05:21 +0100
+@@ -365,7 +365,8 @@ pid_t kernel_thread(int (*fn)(void *), v
+ regs.ARM_r3 = (unsigned long)do_exit;
+ regs.ARM_pc = (unsigned long)kernel_thread_helper | MODE_SVC26;
+
+- return do_fork(flags|CLONE_VM|CLONE_UNTRACED, 0, &regs, 0, NULL, NULL);
++ return do_fork(flags | CLONE_VM | CLONE_UNTRACED | CLONE_KTHREAD,
++ 0, &regs, 0, NULL, NULL);
+ }
+ EXPORT_SYMBOL(kernel_thread);
+
+diff -NurpP --minimal linux-2.6.20.4/arch/arm26/kernel/traps.c linux-2.6.20.4-vs2.2.0-rc20/arch/arm26/kernel/traps.c
+--- linux-2.6.20.4/arch/arm26/kernel/traps.c 2006-09-20 16:57:57 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/arm26/kernel/traps.c 2007-02-06 03:05:21 +0100
+@@ -185,8 +185,9 @@ NORET_TYPE void die(const char *str, str
+ printk("Internal error: %s: %x\n", str, err);
+ printk("CPU: %d\n", smp_processor_id());
+ show_regs(regs);
+- printk("Process %s (pid: %d, stack limit = 0x%p)\n",
+- current->comm, current->pid, end_of_stack(tsk));
++ printk("Process %s (pid: %d[#%u], stack limit = 0x%p)\n",
++ current->comm, current->pid,
++ current->xid, end_of_stack(tsk));
+
+ if (!user_mode(regs) || in_interrupt()) {
+ __dump_stack(tsk, (unsigned long)(regs + 1));
+diff -NurpP --minimal linux-2.6.20.4/arch/cris/Kconfig linux-2.6.20.4-vs2.2.0-rc20/arch/cris/Kconfig
+--- linux-2.6.20.4/arch/cris/Kconfig 2007-02-06 03:00:02 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/cris/Kconfig 2007-02-06 03:05:21 +0100
+@@ -193,6 +193,8 @@ source "drivers/usb/Kconfig"
+
+ source "arch/cris/Kconfig.debug"
+
++source "kernel/vserver/Kconfig"
++
+ source "security/Kconfig"
+
+ source "crypto/Kconfig"
+diff -NurpP --minimal linux-2.6.20.4/arch/cris/arch-v10/kernel/process.c linux-2.6.20.4-vs2.2.0-rc20/arch/cris/arch-v10/kernel/process.c
+--- linux-2.6.20.4/arch/cris/arch-v10/kernel/process.c 2006-09-20 16:57:57 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/cris/arch-v10/kernel/process.c 2007-02-06 03:05:21 +0100
+@@ -103,7 +103,8 @@ int kernel_thread(int (*fn)(void *), voi
+ regs.dccr = 1 << I_DCCR_BITNR;
+
+ /* Ok, create the new process.. */
+- return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, &regs, 0, NULL, NULL);
++ return do_fork(flags | CLONE_VM | CLONE_UNTRACED | CLONE_KTHREAD,
++ 0, &regs, 0, NULL, NULL);
+ }
+
+ /* setup the child's kernel stack with a pt_regs and switch_stack on it.
+diff -NurpP --minimal linux-2.6.20.4/arch/cris/arch-v32/kernel/process.c linux-2.6.20.4-vs2.2.0-rc20/arch/cris/arch-v32/kernel/process.c
+--- linux-2.6.20.4/arch/cris/arch-v32/kernel/process.c 2006-09-20 16:57:57 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/cris/arch-v32/kernel/process.c 2007-02-06 03:05:21 +0100
+@@ -120,7 +120,8 @@ kernel_thread(int (*fn)(void *), void *
+ regs.ccs = 1 << (I_CCS_BITNR + CCS_SHIFT);
+
+ /* Create the new process. */
+- return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, &regs, 0, NULL, NULL);
++ return do_fork(flags | CLONE_VM | CLONE_UNTRACED | CLONE_KTHREAD,
++ 0, &regs, 0, NULL, NULL);
+ }
+
+ /*
+diff -NurpP --minimal linux-2.6.20.4/arch/frv/kernel/kernel_thread.S linux-2.6.20.4-vs2.2.0-rc20/arch/frv/kernel/kernel_thread.S
+--- linux-2.6.20.4/arch/frv/kernel/kernel_thread.S 2005-03-02 12:38:20 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/frv/kernel/kernel_thread.S 2007-02-06 03:05:21 +0100
+@@ -13,6 +13,8 @@
+ #include <asm/unistd.h>
+
+ #define CLONE_VM 0x00000100 /* set if VM shared between processes */
++#define CLONE_KTHREAD 0x10000000 /* kernel thread */
++#define CLONE_KT (CLONE_VM | CLONE_KTHREAD) /* kernel thread flags */
+ #define KERN_ERR "<3>"
+
+ .section .rodata
+@@ -37,7 +39,7 @@ kernel_thread:
+
+ # start by forking the current process, but with shared VM
+ setlos.p #__NR_clone,gr7 ; syscall number
+- ori gr10,#CLONE_VM,gr8 ; first syscall arg [clone_flags]
++ ori gr10,#CLONE_KT,gr8 ; first syscall arg [clone_flags]
+ sethi.p #0xe4e4,gr9 ; second syscall arg [newsp]
+ setlo #0xe4e4,gr9
+ setlos.p #0,gr10 ; third syscall arg [parent_tidptr]
+diff -NurpP --minimal linux-2.6.20.4/arch/h8300/Kconfig linux-2.6.20.4-vs2.2.0-rc20/arch/h8300/Kconfig
+--- linux-2.6.20.4/arch/h8300/Kconfig 2007-02-06 03:00:03 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/h8300/Kconfig 2007-02-06 03:05:21 +0100
+@@ -207,6 +207,8 @@ source "fs/Kconfig"
+
+ source "arch/h8300/Kconfig.debug"
+
++source "kernel/vserver/Kconfig"
++
+ source "security/Kconfig"
+
+ source "crypto/Kconfig"
+diff -NurpP --minimal linux-2.6.20.4/arch/h8300/kernel/process.c linux-2.6.20.4-vs2.2.0-rc20/arch/h8300/kernel/process.c
+--- linux-2.6.20.4/arch/h8300/kernel/process.c 2006-09-20 16:57:58 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/h8300/kernel/process.c 2007-02-06 03:05:21 +0100
+@@ -134,7 +134,7 @@ int kernel_thread(int (*fn)(void *), voi
+
+ fs = get_fs();
+ set_fs (KERNEL_DS);
+- clone_arg = flags | CLONE_VM;
++ clone_arg = flags | CLONE_VM | CLONE_KTHREAD;
+ __asm__("mov.l sp,er3\n\t"
+ "sub.l er2,er2\n\t"
+ "mov.l %2,er1\n\t"
+diff -NurpP --minimal linux-2.6.20.4/arch/i386/Kconfig linux-2.6.20.4-vs2.2.0-rc20/arch/i386/Kconfig
+--- linux-2.6.20.4/arch/i386/Kconfig 2007-02-06 03:00:03 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/i386/Kconfig 2007-02-06 03:05:21 +0100
+@@ -1214,6 +1214,8 @@ endmenu
+
+ source "arch/i386/Kconfig.debug"
+
++source "kernel/vserver/Kconfig"
++
+ source "security/Kconfig"
+
+ source "crypto/Kconfig"
+diff -NurpP --minimal linux-2.6.20.4/arch/i386/kernel/process.c linux-2.6.20.4-vs2.2.0-rc20/arch/i386/kernel/process.c
+--- linux-2.6.20.4/arch/i386/kernel/process.c 2007-02-06 03:00:06 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/i386/kernel/process.c 2007-02-06 03:05:21 +0100
+@@ -294,8 +294,10 @@ void show_regs(struct pt_regs * regs)
+ unsigned long cr0 = 0L, cr2 = 0L, cr3 = 0L, cr4 = 0L;
+
+ printk("\n");
+- printk("Pid: %d, comm: %20s\n", current->pid, current->comm);
+- printk("EIP: %04x:[<%08lx>] CPU: %d\n",0xffff & regs->xcs,regs->eip, smp_processor_id());
++ printk("Pid: %d[#%u], comm: %20s\n",
++ current->pid, current->xid, current->comm);
++ printk("EIP: %04x:[<%08lx>] CPU: %d\n",
++ 0xffff & regs->xcs,regs->eip, smp_processor_id());
+ print_symbol("EIP is at %s\n", regs->eip);
+
+ if (user_mode_vm(regs))
+@@ -347,7 +349,8 @@ int kernel_thread(int (*fn)(void *), voi
+ regs.eflags = X86_EFLAGS_IF | X86_EFLAGS_SF | X86_EFLAGS_PF | 0x2;
+
+ /* Ok, create the new process.. */
+- return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, &regs, 0, NULL, NULL);
++ return do_fork(flags | CLONE_VM | CLONE_UNTRACED | CLONE_KTHREAD,
++ 0, &regs, 0, NULL, NULL);
+ }
+ EXPORT_SYMBOL(kernel_thread);
+
+diff -NurpP --minimal linux-2.6.20.4/arch/i386/kernel/syscall_table.S linux-2.6.20.4-vs2.2.0-rc20/arch/i386/kernel/syscall_table.S
+--- linux-2.6.20.4/arch/i386/kernel/syscall_table.S 2006-11-30 21:18:26 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/i386/kernel/syscall_table.S 2007-02-06 03:05:21 +0100
+@@ -272,7 +272,7 @@ ENTRY(sys_call_table)
+ .long sys_tgkill /* 270 */
+ .long sys_utimes
+ .long sys_fadvise64_64
+- .long sys_ni_syscall /* sys_vserver */
++ .long sys_vserver
+ .long sys_mbind
+ .long sys_get_mempolicy
+ .long sys_set_mempolicy
+diff -NurpP --minimal linux-2.6.20.4/arch/i386/kernel/sysenter.c linux-2.6.20.4-vs2.2.0-rc20/arch/i386/kernel/sysenter.c
+--- linux-2.6.20.4/arch/i386/kernel/sysenter.c 2007-03-10 20:33:59 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/i386/kernel/sysenter.c 2007-03-10 18:57:29 +0100
+@@ -17,6 +17,7 @@
+ #include <linux/elf.h>
+ #include <linux/mm.h>
+ #include <linux/module.h>
++#include <linux/vs_memory.h>
+
+ #include <asm/cpufeature.h>
+ #include <asm/msr.h>
+@@ -163,7 +164,7 @@ int arch_setup_additional_pages(struct l
+ current->mm->context.vdso = (void *)addr;
+ current_thread_info()->sysenter_return =
+ (void *)VDSO_SYM(&SYSENTER_RETURN);
+- mm->total_vm++;
++ vx_vmpages_inc(mm);
+ up_fail:
+ up_write(&mm->mmap_sem);
+ return ret;
+diff -NurpP --minimal linux-2.6.20.4/arch/i386/kernel/traps.c linux-2.6.20.4-vs2.2.0-rc20/arch/i386/kernel/traps.c
+--- linux-2.6.20.4/arch/i386/kernel/traps.c 2007-02-06 03:00:07 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/i386/kernel/traps.c 2007-02-06 03:05:21 +0100
+@@ -56,6 +56,8 @@
+ #include <asm/stacktrace.h>
+
+ #include <linux/module.h>
++#include <linux/vs_context.h>
++#include <linux/vserver/history.h>
+
+ #include "mach_traps.h"
+
+@@ -315,8 +317,8 @@ void show_registers(struct pt_regs *regs
+ regs->esi, regs->edi, regs->ebp, esp);
+ printk(KERN_EMERG "ds: %04x es: %04x ss: %04x\n",
+ regs->xds & 0xffff, regs->xes & 0xffff, ss);
+- printk(KERN_EMERG "Process %.*s (pid: %d, ti=%p task=%p task.ti=%p)",
+- TASK_COMM_LEN, current->comm, current->pid,
++ printk(KERN_EMERG "Process %.*s (pid: %d[#%u], ti=%p task=%p task.ti=%p)",
++ TASK_COMM_LEN, current->comm, current->pid, current->xid,
+ current_thread_info(), current, current->thread_info);
+ /*
+ * When in-kernel, we also print out the stack and code at the
+@@ -386,6 +388,8 @@ void die(const char * str, struct pt_reg
+
+ oops_enter();
+
++ vxh_throw_oops();
++
+ if (die.lock_owner != raw_smp_processor_id()) {
+ console_verbose();
+ spin_lock_irqsave(&die.lock, flags);
+@@ -423,9 +427,9 @@ void die(const char * str, struct pt_reg
+ if (nl)
+ printk("\n");
+ if (notify_die(DIE_OOPS, str, regs, err,
+- current->thread.trap_no, SIGSEGV) !=
+- NOTIFY_STOP) {
++ current->thread.trap_no, SIGSEGV) != NOTIFY_STOP) {
+ show_registers(regs);
++ vxh_dump_history();
+ /* Executive summary in case the oops scrolled away */
+ esp = (unsigned long) (&regs->esp);
+ savesegment(ss, ss);
+diff -NurpP --minimal linux-2.6.20.4/arch/i386/mm/fault.c linux-2.6.20.4-vs2.2.0-rc20/arch/i386/mm/fault.c
+--- linux-2.6.20.4/arch/i386/mm/fault.c 2007-02-06 03:00:07 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/i386/mm/fault.c 2007-03-10 18:02:51 +0100
+@@ -594,7 +594,8 @@ out_of_memory:
+ down_read(&mm->mmap_sem);
+ goto survive;
+ }
+- printk("VM: killing process %s\n", tsk->comm);
++ printk("VM: killing process %s(%d:#%u)\n",
++ tsk->comm, tsk->pid, tsk->xid);
+ if (error_code & 4)
+ do_exit(SIGKILL);
+ goto no_context;
+diff -NurpP --minimal linux-2.6.20.4/arch/ia64/Kconfig linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/Kconfig
+--- linux-2.6.20.4/arch/ia64/Kconfig 2007-03-10 20:33:59 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/Kconfig 2007-03-10 18:57:29 +0100
+@@ -569,6 +569,8 @@ endmenu
+
+ source "arch/ia64/Kconfig.debug"
+
++source "kernel/vserver/Kconfig"
++
+ source "security/Kconfig"
+
+ source "crypto/Kconfig"
+diff -NurpP --minimal linux-2.6.20.4/arch/ia64/ia32/binfmt_elf32.c linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/ia32/binfmt_elf32.c
+--- linux-2.6.20.4/arch/ia64/ia32/binfmt_elf32.c 2007-02-06 03:00:07 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/ia32/binfmt_elf32.c 2007-02-06 03:05:21 +0100
+@@ -238,7 +238,8 @@ ia32_setup_arg_pages (struct linux_binpr
+ kmem_cache_free(vm_area_cachep, mpnt);
+ return ret;
+ }
+- current->mm->stack_vm = current->mm->total_vm = vma_pages(mpnt);
++ vx_vmpages_sub(current->mm, current->mm->total_vm - vma_pages(mpnt));
++ current->mm->stack_vm = current->mm->total_vm;
+ }
+
+ for (i = 0 ; i < MAX_ARG_PAGES ; i++) {
+diff -NurpP --minimal linux-2.6.20.4/arch/ia64/ia32/ia32_entry.S linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/ia32/ia32_entry.S
+--- linux-2.6.20.4/arch/ia64/ia32/ia32_entry.S 2006-06-18 04:51:55 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/ia32/ia32_entry.S 2007-02-06 03:05:21 +0100
+@@ -483,7 +483,7 @@ ia32_syscall_table:
+ data8 sys_tgkill /* 270 */
+ data8 compat_sys_utimes
+ data8 sys32_fadvise64_64
+- data8 sys_ni_syscall
++ data8 sys32_vserver
+ data8 sys_ni_syscall
+ data8 sys_ni_syscall /* 275 */
+ data8 sys_ni_syscall
+diff -NurpP --minimal linux-2.6.20.4/arch/ia64/ia32/sys_ia32.c linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/ia32/sys_ia32.c
+--- linux-2.6.20.4/arch/ia64/ia32/sys_ia32.c 2007-02-06 03:00:07 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/ia32/sys_ia32.c 2007-02-06 03:05:21 +0100
+@@ -1182,7 +1182,7 @@ sys32_gettimeofday (struct compat_timeva
+ {
+ if (tv) {
+ struct timeval ktv;
+- do_gettimeofday(&ktv);
++ vx_gettimeofday(&ktv);
+ if (put_tv32(tv, &ktv))
+ return -EFAULT;
+ }
+diff -NurpP --minimal linux-2.6.20.4/arch/ia64/kernel/asm-offsets.c linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/kernel/asm-offsets.c
+--- linux-2.6.20.4/arch/ia64/kernel/asm-offsets.c 2006-09-20 16:57:58 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/kernel/asm-offsets.c 2007-02-06 03:05:21 +0100
+@@ -191,6 +191,7 @@ void foo(void)
+ /* for assembly files which can't include sched.h: */
+ DEFINE(IA64_CLONE_VFORK, CLONE_VFORK);
+ DEFINE(IA64_CLONE_VM, CLONE_VM);
++ DEFINE(IA64_CLONE_KTHREAD, CLONE_KTHREAD);
+
+ BLANK();
+ DEFINE(IA64_CPUINFO_NSEC_PER_CYC_OFFSET,
+diff -NurpP --minimal linux-2.6.20.4/arch/ia64/kernel/entry.S linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/kernel/entry.S
+--- linux-2.6.20.4/arch/ia64/kernel/entry.S 2007-02-06 03:00:07 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/kernel/entry.S 2007-02-06 03:07:01 +0100
+@@ -1576,7 +1576,7 @@ sys_call_table:
+ data8 sys_mq_notify
+ data8 sys_mq_getsetattr
+ data8 sys_kexec_load
+- data8 sys_ni_syscall // reserved for vserver
++ data8 sys_vserver
+ data8 sys_waitid // 1270
+ data8 sys_add_key
+ data8 sys_request_key
+diff -NurpP --minimal linux-2.6.20.4/arch/ia64/kernel/perfmon.c linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/kernel/perfmon.c
+--- linux-2.6.20.4/arch/ia64/kernel/perfmon.c 2007-02-06 03:00:07 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/kernel/perfmon.c 2007-02-06 03:05:21 +0100
+@@ -41,6 +41,7 @@
+ #include <linux/capability.h>
+ #include <linux/rcupdate.h>
+ #include <linux/completion.h>
++#include <linux/vs_memory.h>
+
+ #include <asm/errno.h>
+ #include <asm/intrinsics.h>
+@@ -2356,7 +2357,7 @@ pfm_smpl_buffer_alloc(struct task_struct
+ */
+ insert_vm_struct(mm, vma);
+
+- mm->total_vm += size >> PAGE_SHIFT;
++ vx_vmpages_add(mm, size >> PAGE_SHIFT);
+ vm_stat_account(vma->vm_mm, vma->vm_flags, vma->vm_file,
+ vma_pages(vma));
+ up_write(&task->mm->mmap_sem);
+diff -NurpP --minimal linux-2.6.20.4/arch/ia64/kernel/process.c linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/kernel/process.c
+--- linux-2.6.20.4/arch/ia64/kernel/process.c 2007-02-06 03:00:07 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/kernel/process.c 2007-02-06 03:05:21 +0100
+@@ -105,7 +105,8 @@ show_regs (struct pt_regs *regs)
+ unsigned long ip = regs->cr_iip + ia64_psr(regs)->ri;
+
+ print_modules();
+- printk("\nPid: %d, CPU %d, comm: %20s\n", current->pid, smp_processor_id(), current->comm);
++ printk("\nPid: %d[#%u], CPU %d, comm: %20s\n",
++ current->pid, current->xid, smp_processor_id(), current->comm);
+ printk("psr : %016lx ifs : %016lx ip : [<%016lx>] %s\n",
+ regs->cr_ipsr, regs->cr_ifs, ip, print_tainted());
+ print_symbol("ip is at %s\n", ip);
+@@ -694,7 +695,8 @@ kernel_thread (int (*fn)(void *), void *
+ regs.sw.ar_fpsr = regs.pt.ar_fpsr = ia64_getreg(_IA64_REG_AR_FPSR);
+ regs.sw.ar_bspstore = (unsigned long) current + IA64_RBS_OFFSET;
+ regs.sw.pr = (1 << PRED_KERNEL_STACK);
+- return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, &regs.pt, 0, NULL, NULL);
++ return do_fork(flags | CLONE_VM | CLONE_UNTRACED | CLONE_KTHREAD,
++ 0, &regs.pt, 0, NULL, NULL);
+ }
+ EXPORT_SYMBOL(kernel_thread);
+
+diff -NurpP --minimal linux-2.6.20.4/arch/ia64/kernel/ptrace.c linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/kernel/ptrace.c
+--- linux-2.6.20.4/arch/ia64/kernel/ptrace.c 2006-09-20 16:57:58 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/kernel/ptrace.c 2007-02-06 03:05:21 +0100
+@@ -17,6 +17,7 @@
+ #include <linux/security.h>
+ #include <linux/audit.h>
+ #include <linux/signal.h>
++#include <linux/vs_base.h>
+
+ #include <asm/pgtable.h>
+ #include <asm/processor.h>
+@@ -1442,6 +1443,9 @@ sys_ptrace (long request, pid_t pid, uns
+ read_unlock(&tasklist_lock);
+ if (!child)
+ goto out;
++ if (!vx_check(vx_task_xid(child), VS_WATCH_P|VS_IDENT))
++ goto out_tsk;
++
+ ret = -EPERM;
+ if (pid == 1) /* no messing around with init! */
+ goto out_tsk;
+diff -NurpP --minimal linux-2.6.20.4/arch/ia64/kernel/traps.c linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/kernel/traps.c
+--- linux-2.6.20.4/arch/ia64/kernel/traps.c 2007-02-06 03:00:07 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/kernel/traps.c 2007-02-06 03:09:13 +0100
+@@ -106,8 +106,9 @@ die (const char *str, struct pt_regs *re
+ put_cpu();
+
+ if (++die.lock_owner_depth < 3) {
+- printk("%s[%d]: %s %ld [%d]\n",
+- current->comm, current->pid, str, err, ++die_counter);
++ printk("%s[%d[#%u]]: %s %ld [%d]\n",
++ current->comm, current->pid, current->xid,
++ str, err, ++die_counter);
+ (void) notify_die(DIE_OOPS, (char *)str, regs, err, 255, SIGSEGV);
+ show_regs(regs);
+ } else
+@@ -359,8 +360,9 @@ handle_fpu_swa (int fp_fault, struct pt_
+ if ((last.count & 15) < 5 && (ia64_fetchadd(1, &last.count, acq) & 15) < 5) {
+ last.time = current_jiffies + 5 * HZ;
+ printk(KERN_WARNING
+- "%s(%d): floating-point assist fault at ip %016lx, isr %016lx\n",
+- current->comm, current->pid, regs->cr_iip + ia64_psr(regs)->ri, isr);
++ "%s(%d[#%u]): floating-point assist fault at ip %016lx, isr %016lx\n",
++ current->comm, current->pid, current->xid,
++ regs->cr_iip + ia64_psr(regs)->ri, isr);
+ }
+ }
+ }
+diff -NurpP --minimal linux-2.6.20.4/arch/ia64/mm/fault.c linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/mm/fault.c
+--- linux-2.6.20.4/arch/ia64/mm/fault.c 2006-11-30 21:18:27 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/mm/fault.c 2007-02-06 03:05:21 +0100
+@@ -10,6 +10,7 @@
+ #include <linux/smp_lock.h>
+ #include <linux/interrupt.h>
+ #include <linux/kprobes.h>
++#include <linux/vs_memory.h>
+
+ #include <asm/pgtable.h>
+ #include <asm/processor.h>
+diff -NurpP --minimal linux-2.6.20.4/arch/ia64/sn/kernel/xpc_main.c linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/sn/kernel/xpc_main.c
+--- linux-2.6.20.4/arch/ia64/sn/kernel/xpc_main.c 2007-02-06 03:00:08 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/ia64/sn/kernel/xpc_main.c 2007-02-06 03:05:21 +0100
+@@ -108,6 +108,7 @@ static ctl_table xpc_sys_xpc_hb_dir[] =
+ 0644,
+ NULL,
+ &proc_dointvec_minmax,
++ NULL,
+ &sysctl_intvec,
+ NULL,
+ &xpc_hb_min_interval,
+@@ -121,6 +122,7 @@ static ctl_table xpc_sys_xpc_hb_dir[] =
+ 0644,
+ NULL,
+ &proc_dointvec_minmax,
++ NULL,
+ &sysctl_intvec,
+ NULL,
+ &xpc_hb_check_min_interval,
+@@ -145,6 +147,7 @@ static ctl_table xpc_sys_xpc_dir[] = {
+ 0644,
+ NULL,
+ &proc_dointvec_minmax,
++ NULL,
+ &sysctl_intvec,
+ NULL,
+ &xpc_disengage_request_min_timelimit,
+diff -NurpP --minimal linux-2.6.20.4/arch/m32r/kernel/process.c linux-2.6.20.4-vs2.2.0-rc20/arch/m32r/kernel/process.c
+--- linux-2.6.20.4/arch/m32r/kernel/process.c 2007-03-10 20:33:59 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/m32r/kernel/process.c 2007-03-10 18:57:29 +0100
+@@ -211,8 +211,8 @@ int kernel_thread(int (*fn)(void *), voi
+ regs.psw = M32R_PSW_BIE;
+
+ /* Ok, create the new process. */
+- return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, &regs, 0, NULL,
+- NULL);
++ return do_fork(flags | CLONE_VM | CLONE_UNTRACED | CLONE_KTHREAD,
++ 0, &regs, 0, NULL, NULL);
+ }
+
+ /*
+diff -NurpP --minimal linux-2.6.20.4/arch/m32r/kernel/traps.c linux-2.6.20.4-vs2.2.0-rc20/arch/m32r/kernel/traps.c
+--- linux-2.6.20.4/arch/m32r/kernel/traps.c 2006-11-30 21:18:28 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/m32r/kernel/traps.c 2007-02-06 03:05:21 +0100
+@@ -195,8 +195,9 @@ static void show_registers(struct pt_reg
+ } else {
+ printk("SPI: %08lx\n", sp);
+ }
+- printk("Process %s (pid: %d, process nr: %d, stackpage=%08lx)",
+- current->comm, current->pid, 0xffff & i, 4096+(unsigned long)current);
++ printk("Process %s (pid: %d[#%u], process nr: %d, stackpage=%08lx)",
++ current->comm, current->pid, current->xid,
++ 0xffff & i, 4096+(unsigned long)current);
+
+ /*
+ * When in-kernel, we also print out the stack and code at the
+diff -NurpP --minimal linux-2.6.20.4/arch/m68k/Kconfig linux-2.6.20.4-vs2.2.0-rc20/arch/m68k/Kconfig
+--- linux-2.6.20.4/arch/m68k/Kconfig 2007-02-06 03:00:08 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/m68k/Kconfig 2007-02-06 03:05:21 +0100
+@@ -662,6 +662,8 @@ source "fs/Kconfig"
+
+ source "arch/m68k/Kconfig.debug"
+
++source "kernel/vserver/Kconfig"
++
+ source "security/Kconfig"
+
+ source "crypto/Kconfig"
+diff -NurpP --minimal linux-2.6.20.4/arch/m68k/kernel/process.c linux-2.6.20.4-vs2.2.0-rc20/arch/m68k/kernel/process.c
+--- linux-2.6.20.4/arch/m68k/kernel/process.c 2006-11-30 21:18:28 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/m68k/kernel/process.c 2007-02-06 03:05:21 +0100
+@@ -159,7 +159,8 @@ int kernel_thread(int (*fn)(void *), voi
+
+ {
+ register long retval __asm__ ("d0");
+- register long clone_arg __asm__ ("d1") = flags | CLONE_VM | CLONE_UNTRACED;
++ register long clone_arg __asm__ ("d1") =
++ flags | CLONE_VM | CLONE_UNTRACED | CLONE_KTHREAD;
+
+ retval = __NR_clone;
+ __asm__ __volatile__
+diff -NurpP --minimal linux-2.6.20.4/arch/m68k/kernel/ptrace.c linux-2.6.20.4-vs2.2.0-rc20/arch/m68k/kernel/ptrace.c
+--- linux-2.6.20.4/arch/m68k/kernel/ptrace.c 2006-09-20 16:57:58 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/m68k/kernel/ptrace.c 2007-02-06 03:05:21 +0100
+@@ -19,6 +19,7 @@
+ #include <linux/ptrace.h>
+ #include <linux/user.h>
+ #include <linux/signal.h>
++#include <linux/vs_base.h>
+
+ #include <asm/uaccess.h>
+ #include <asm/page.h>
+@@ -279,6 +280,8 @@ long arch_ptrace(struct task_struct *chi
+ ret = ptrace_request(child, request, addr, data);
+ break;
+ }
++ if (!vx_check(vx_task_xid(child), VS_WATCH_P|VS_IDENT))
++ goto out_tsk;
+
+ return ret;
+ out_eio:
+diff -NurpP --minimal linux-2.6.20.4/arch/m68k/kernel/traps.c linux-2.6.20.4-vs2.2.0-rc20/arch/m68k/kernel/traps.c
+--- linux-2.6.20.4/arch/m68k/kernel/traps.c 2006-11-30 21:18:28 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/m68k/kernel/traps.c 2007-02-06 03:05:21 +0100
+@@ -899,8 +899,8 @@ void show_registers(struct pt_regs *regs
+ printk("d4: %08lx d5: %08lx a0: %08lx a1: %08lx\n",
+ regs->d4, regs->d5, regs->a0, regs->a1);
+
+- printk("Process %s (pid: %d, task=%p)\n",
+- current->comm, current->pid, current);
++ printk("Process %s (pid: %d[#%u], task=%p)\n",
++ current->comm, current->pid, current->xid, current);
+ addr = (unsigned long)&fp->un;
+ printk("Frame format=%X ", regs->format);
+ switch (regs->format) {
+diff -NurpP --minimal linux-2.6.20.4/arch/m68knommu/Kconfig linux-2.6.20.4-vs2.2.0-rc20/arch/m68knommu/Kconfig
+--- linux-2.6.20.4/arch/m68knommu/Kconfig 2007-02-06 03:00:08 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/m68knommu/Kconfig 2007-02-06 03:05:21 +0100
+@@ -671,6 +671,8 @@ source "fs/Kconfig"
+
+ source "arch/m68knommu/Kconfig.debug"
+
++source "kernel/vserver/Kconfig"
++
+ source "security/Kconfig"
+
+ source "crypto/Kconfig"
+diff -NurpP --minimal linux-2.6.20.4/arch/m68knommu/kernel/process.c linux-2.6.20.4-vs2.2.0-rc20/arch/m68knommu/kernel/process.c
+--- linux-2.6.20.4/arch/m68knommu/kernel/process.c 2007-02-06 03:00:08 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/m68knommu/kernel/process.c 2007-02-06 03:05:21 +0100
+@@ -122,7 +122,7 @@ void show_regs(struct pt_regs * regs)
+ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
+ {
+ int retval;
+- long clone_arg = flags | CLONE_VM;
++ long clone_arg = flags | CLONE_VM | CLONE_KTHREAD;
+ mm_segment_t fs;
+
+ fs = get_fs();
+diff -NurpP --minimal linux-2.6.20.4/arch/m68knommu/kernel/traps.c linux-2.6.20.4-vs2.2.0-rc20/arch/m68knommu/kernel/traps.c
+--- linux-2.6.20.4/arch/m68knommu/kernel/traps.c 2007-02-06 03:00:08 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/m68knommu/kernel/traps.c 2007-02-06 03:05:21 +0100
+@@ -80,8 +80,9 @@ void die_if_kernel(char *str, struct pt_
+ printk(KERN_EMERG "d4: %08lx d5: %08lx a0: %08lx a1: %08lx\n",
+ fp->d4, fp->d5, fp->a0, fp->a1);
+
+- printk(KERN_EMERG "Process %s (pid: %d, stackpage=%08lx)\n",
+- current->comm, current->pid, PAGE_SIZE+(unsigned long)current);
++ printk(KERN_EMERG "Process %s (pid: %d[#%u], stackpage=%08lx)\n",
++ current->comm, current->pid, current->xid,
++ PAGE_SIZE+(unsigned long)current);
+ show_stack(NULL, (unsigned long *)fp);
+ do_exit(SIGSEGV);
+ }
+diff -NurpP --minimal linux-2.6.20.4/arch/mips/Kconfig linux-2.6.20.4-vs2.2.0-rc20/arch/mips/Kconfig
+--- linux-2.6.20.4/arch/mips/Kconfig 2007-02-06 03:00:08 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/mips/Kconfig 2007-02-06 03:05:21 +0100
+@@ -2084,6 +2084,8 @@ source "arch/mips/oprofile/Kconfig"
+
+ source "arch/mips/Kconfig.debug"
+
++source "kernel/vserver/Kconfig"
++
+ source "security/Kconfig"
+
+ source "crypto/Kconfig"
+diff -NurpP --minimal linux-2.6.20.4/arch/mips/kernel/linux32.c linux-2.6.20.4-vs2.2.0-rc20/arch/mips/kernel/linux32.c
+--- linux-2.6.20.4/arch/mips/kernel/linux32.c 2007-02-06 03:00:11 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/mips/kernel/linux32.c 2007-02-06 03:05:21 +0100
+@@ -300,7 +300,7 @@ sys32_gettimeofday(struct compat_timeval
+ {
+ if (tv) {
+ struct timeval ktv;
+- do_gettimeofday(&ktv);
++ vx_gettimeofday(&ktv);
+ if (put_tv32(tv, &ktv))
+ return -EFAULT;
+ }
+diff -NurpP --minimal linux-2.6.20.4/arch/mips/kernel/process.c linux-2.6.20.4-vs2.2.0-rc20/arch/mips/kernel/process.c
+--- linux-2.6.20.4/arch/mips/kernel/process.c 2006-11-30 21:18:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/mips/kernel/process.c 2007-02-06 03:05:21 +0100
+@@ -271,7 +271,8 @@ long kernel_thread(int (*fn)(void *), vo
+ #endif
+
+ /* Ok, create the new process.. */
+- return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, &regs, 0, NULL, NULL);
++ return do_fork(flags | CLONE_VM | CLONE_UNTRACED | CLONE_KTHREAD,
++ 0, &regs, 0, NULL, NULL);
+ }
+
+ /*
+diff -NurpP --minimal linux-2.6.20.4/arch/mips/kernel/ptrace.c linux-2.6.20.4-vs2.2.0-rc20/arch/mips/kernel/ptrace.c
+--- linux-2.6.20.4/arch/mips/kernel/ptrace.c 2006-11-30 21:18:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/mips/kernel/ptrace.c 2007-02-06 03:05:21 +0100
+@@ -26,6 +26,7 @@
+ #include <linux/user.h>
+ #include <linux/security.h>
+ #include <linux/signal.h>
++#include <linux/vs_base.h>
+
+ #include <asm/byteorder.h>
+ #include <asm/cpu.h>
+@@ -172,6 +173,9 @@ long arch_ptrace(struct task_struct *chi
+ {
+ int ret;
+
++ if (!vx_check(vx_task_xid(child), VS_WATCH_P|VS_IDENT))
++ goto out;
++
+ switch (request) {
+ /* when I and D space are separate, these will need to be fixed. */
+ case PTRACE_PEEKTEXT: /* read word at location addr. */
+diff -NurpP --minimal linux-2.6.20.4/arch/mips/kernel/scall32-o32.S linux-2.6.20.4-vs2.2.0-rc20/arch/mips/kernel/scall32-o32.S
+--- linux-2.6.20.4/arch/mips/kernel/scall32-o32.S 2007-02-06 03:00:11 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/mips/kernel/scall32-o32.S 2007-02-06 03:05:21 +0100
+@@ -619,7 +619,7 @@ einval: li v0, -EINVAL
+ sys sys_mq_timedreceive 5
+ sys sys_mq_notify 2 /* 4275 */
+ sys sys_mq_getsetattr 3
+- sys sys_ni_syscall 0 /* sys_vserver */
++ sys sys_vserver 3
+ sys sys_waitid 5
+ sys sys_ni_syscall 0 /* available, was setaltroot */
+ sys sys_add_key 5 /* 4280 */
+diff -NurpP --minimal linux-2.6.20.4/arch/mips/kernel/scall64-64.S linux-2.6.20.4-vs2.2.0-rc20/arch/mips/kernel/scall64-64.S
+--- linux-2.6.20.4/arch/mips/kernel/scall64-64.S 2007-02-06 03:00:11 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/mips/kernel/scall64-64.S 2007-02-06 03:05:21 +0100
+@@ -434,7 +434,7 @@ sys_call_table:
+ PTR sys_mq_timedreceive
+ PTR sys_mq_notify
+ PTR sys_mq_getsetattr /* 5235 */
+- PTR sys_ni_syscall /* sys_vserver */
++ PTR sys_vserver
+ PTR sys_waitid
+ PTR sys_ni_syscall /* available, was setaltroot */
+ PTR sys_add_key
+diff -NurpP --minimal linux-2.6.20.4/arch/mips/kernel/scall64-n32.S linux-2.6.20.4-vs2.2.0-rc20/arch/mips/kernel/scall64-n32.S
+--- linux-2.6.20.4/arch/mips/kernel/scall64-n32.S 2007-02-06 03:00:11 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/mips/kernel/scall64-n32.S 2007-02-06 03:05:21 +0100
+@@ -360,7 +360,7 @@ EXPORT(sysn32_call_table)
+ PTR compat_sys_mq_timedreceive
+ PTR compat_sys_mq_notify
+ PTR compat_sys_mq_getsetattr
+- PTR sys_ni_syscall /* 6240, sys_vserver */
++ PTR sys32_vserver /* 6240 */
+ PTR sysn32_waitid
+ PTR sys_ni_syscall /* available, was setaltroot */
+ PTR sys_add_key
+diff -NurpP --minimal linux-2.6.20.4/arch/mips/kernel/scall64-o32.S linux-2.6.20.4-vs2.2.0-rc20/arch/mips/kernel/scall64-o32.S
+--- linux-2.6.20.4/arch/mips/kernel/scall64-o32.S 2007-02-06 03:00:11 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/mips/kernel/scall64-o32.S 2007-02-06 03:05:21 +0100
+@@ -482,7 +482,7 @@ sys_call_table:
+ PTR compat_sys_mq_timedreceive
+ PTR compat_sys_mq_notify /* 4275 */
+ PTR compat_sys_mq_getsetattr
+- PTR sys_ni_syscall /* sys_vserver */
++ PTR sys32_vserver
+ PTR sys32_waitid
+ PTR sys_ni_syscall /* available, was setaltroot */
+ PTR sys_add_key /* 4280 */
+diff -NurpP --minimal linux-2.6.20.4/arch/mips/kernel/traps.c linux-2.6.20.4-vs2.2.0-rc20/arch/mips/kernel/traps.c
+--- linux-2.6.20.4/arch/mips/kernel/traps.c 2007-02-06 03:00:11 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/mips/kernel/traps.c 2007-02-06 03:05:21 +0100
+@@ -299,8 +299,9 @@ void show_registers(struct pt_regs *regs
+ {
+ show_regs(regs);
+ print_modules();
+- printk("Process %s (pid: %d, threadinfo=%p, task=%p)\n",
+- current->comm, current->pid, current_thread_info(), current);
++ printk("Process %s (pid: %d:#%u, threadinfo=%p, task=%p)\n",
++ current->comm, current->pid, current->xid,
++ current_thread_info(), current);
+ show_stacktrace(current, regs);
+ show_code((unsigned int *) regs->cp0_epc);
+ printk("\n");
+diff -NurpP --minimal linux-2.6.20.4/arch/mips/mm/fault.c linux-2.6.20.4-vs2.2.0-rc20/arch/mips/mm/fault.c
+--- linux-2.6.20.4/arch/mips/mm/fault.c 2007-02-06 03:00:11 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/mips/mm/fault.c 2007-03-10 18:02:51 +0100
+@@ -180,7 +180,8 @@ out_of_memory:
+ down_read(&mm->mmap_sem);
+ goto survive;
+ }
+- printk("VM: killing process %s\n", tsk->comm);
++ printk("VM: killing process %s(%d:#%u)\n",
++ tsk->comm, tsk->pid, tsk->xid);
+ if (user_mode(regs))
+ do_exit(SIGKILL);
+ goto no_context;
+diff -NurpP --minimal linux-2.6.20.4/arch/parisc/Kconfig linux-2.6.20.4-vs2.2.0-rc20/arch/parisc/Kconfig
+--- linux-2.6.20.4/arch/parisc/Kconfig 2007-02-06 03:00:12 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/parisc/Kconfig 2007-02-06 03:05:21 +0100
+@@ -265,6 +265,8 @@ source "arch/parisc/oprofile/Kconfig"
+
+ source "arch/parisc/Kconfig.debug"
+
++source "kernel/vserver/Kconfig"
++
+ source "security/Kconfig"
+
+ source "crypto/Kconfig"
+diff -NurpP --minimal linux-2.6.20.4/arch/parisc/kernel/entry.S linux-2.6.20.4-vs2.2.0-rc20/arch/parisc/kernel/entry.S
+--- linux-2.6.20.4/arch/parisc/kernel/entry.S 2006-11-30 21:18:30 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/parisc/kernel/entry.S 2007-02-06 03:05:21 +0100
+@@ -761,6 +761,7 @@ fault_vector_11:
+
+ #define CLONE_VM 0x100 /* Must agree with <linux/sched.h> */
+ #define CLONE_UNTRACED 0x00800000
++#define CLONE_KTHREAD 0x10000000
+
+ .export __kernel_thread, code
+ .import do_fork
+diff -NurpP --minimal linux-2.6.20.4/arch/parisc/kernel/process.c linux-2.6.20.4-vs2.2.0-rc20/arch/parisc/kernel/process.c
+--- linux-2.6.20.4/arch/parisc/kernel/process.c 2006-11-30 21:18:30 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/parisc/kernel/process.c 2007-02-06 03:05:21 +0100
+@@ -173,7 +173,7 @@ pid_t kernel_thread(int (*fn)(void *), v
+ * kernel_thread can become a #define.
+ */
+
+- return __kernel_thread(fn, arg, flags);
++ return __kernel_thread(fn, arg, flags | CLONE_KTHREAD);
+ }
+ EXPORT_SYMBOL(kernel_thread);
+
+diff -NurpP --minimal linux-2.6.20.4/arch/parisc/kernel/sys_parisc32.c linux-2.6.20.4-vs2.2.0-rc20/arch/parisc/kernel/sys_parisc32.c
+--- linux-2.6.20.4/arch/parisc/kernel/sys_parisc32.c 2006-11-30 21:18:31 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/parisc/kernel/sys_parisc32.c 2007-02-15 00:05:56 +0100
+@@ -204,11 +204,11 @@ static inline long get_ts32(struct times
+ asmlinkage int
+ sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
+ {
+- extern void do_gettimeofday(struct timeval *tv);
++ extern void vx_gettimeofday(struct timeval *tv);
+
+ if (tv) {
+ struct timeval ktv;
+- do_gettimeofday(&ktv);
++ vx_gettimeofday(&ktv);
+ if (put_compat_timeval(tv, &ktv))
+ return -EFAULT;
+ }
+@@ -612,6 +612,7 @@ asmlinkage int sys32_sysinfo(struct sysi
+
+ do {
+ seq = read_seqbegin(&xtime_lock);
++ /* TODO: requires vx virtualization */
+ val.uptime = jiffies / HZ;
+
+ val.loads[0] = avenrun[0] << (SI_LOAD_SHIFT - FSHIFT);
+diff -NurpP --minimal linux-2.6.20.4/arch/parisc/kernel/syscall_table.S linux-2.6.20.4-vs2.2.0-rc20/arch/parisc/kernel/syscall_table.S
+--- linux-2.6.20.4/arch/parisc/kernel/syscall_table.S 2006-11-30 21:18:31 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/parisc/kernel/syscall_table.S 2007-02-06 03:05:21 +0100
+@@ -368,7 +368,7 @@
+ ENTRY_COMP(mbind) /* 260 */
+ ENTRY_COMP(get_mempolicy)
+ ENTRY_COMP(set_mempolicy)
+- ENTRY_SAME(ni_syscall) /* 263: reserved for vserver */
++ ENTRY_DIFF(vserver)
+ ENTRY_SAME(add_key)
+ ENTRY_SAME(request_key) /* 265 */
+ ENTRY_SAME(keyctl)
+diff -NurpP --minimal linux-2.6.20.4/arch/parisc/kernel/traps.c linux-2.6.20.4-vs2.2.0-rc20/arch/parisc/kernel/traps.c
+--- linux-2.6.20.4/arch/parisc/kernel/traps.c 2006-11-30 21:18:31 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/parisc/kernel/traps.c 2007-02-06 03:05:21 +0100
+@@ -210,8 +210,9 @@ void die_if_kernel(char *str, struct pt_
+ if (err == 0)
+ return; /* STFU */
+
+- printk(KERN_CRIT "%s (pid %d): %s (code %ld) at " RFMT "\n",
+- current->comm, current->pid, str, err, regs->iaoq[0]);
++ printk(KERN_CRIT "%s (pid %d:#%u): %s (code %ld) at " RFMT "\n",
++ current->comm, current->pid, current->xid,
++ str, err, regs->iaoq[0]);
+ #ifdef PRINT_USER_FAULTS
+ /* XXX for debugging only */
+ show_regs(regs);
+@@ -242,8 +243,8 @@ void die_if_kernel(char *str, struct pt_
+ if (!console_drivers)
+ pdc_console_restart();
+
+- printk(KERN_CRIT "%s (pid %d): %s (code %ld)\n",
+- current->comm, current->pid, str, err);
++ printk(KERN_CRIT "%s (pid %d:#%u): %s (code %ld)\n",
++ current->comm, current->pid, current->xid, str, err);
+ show_regs(regs);
+
+ if (in_interrupt())
+diff -NurpP --minimal linux-2.6.20.4/arch/parisc/mm/fault.c linux-2.6.20.4-vs2.2.0-rc20/arch/parisc/mm/fault.c
+--- linux-2.6.20.4/arch/parisc/mm/fault.c 2007-02-06 03:00:12 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/parisc/mm/fault.c 2007-03-10 18:02:51 +0100
+@@ -213,8 +213,9 @@ bad_area:
+
+ #ifdef PRINT_USER_FAULTS
+ printk(KERN_DEBUG "\n");
+- printk(KERN_DEBUG "do_page_fault() pid=%d command='%s' type=%lu address=0x%08lx\n",
+- tsk->pid, tsk->comm, code, address);
++ printk(KERN_DEBUG "do_page_fault() pid=%d:#%u "
++ "command='%s' type=%lu address=0x%08lx\n",
++ tsk->pid, tsk->xid, tsk->comm, code, address);
+ if (vma) {
+ printk(KERN_DEBUG "vm_start = 0x%08lx, vm_end = 0x%08lx\n",
+ vma->vm_start, vma->vm_end);
+@@ -264,7 +265,8 @@ no_context:
+
+ out_of_memory:
+ up_read(&mm->mmap_sem);
+- printk(KERN_CRIT "VM: killing process %s\n", current->comm);
++ printk(KERN_CRIT "VM: killing process %s(%d:#%u)\n",
++ current->comm, current->pid, current->xid);
+ if (user_mode(regs))
+ do_exit(SIGKILL);
+ goto no_context;
+diff -NurpP --minimal linux-2.6.20.4/arch/powerpc/Kconfig linux-2.6.20.4-vs2.2.0-rc20/arch/powerpc/Kconfig
+--- linux-2.6.20.4/arch/powerpc/Kconfig 2007-02-06 03:00:12 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/powerpc/Kconfig 2007-02-06 03:05:21 +0100
+@@ -1193,6 +1193,8 @@ endmenu
+
+ source "arch/powerpc/Kconfig.debug"
+
++source "kernel/vserver/Kconfig"
++
+ source "security/Kconfig"
+
+ config KEYS_COMPAT
+diff -NurpP --minimal linux-2.6.20.4/arch/powerpc/kernel/asm-offsets.c linux-2.6.20.4-vs2.2.0-rc20/arch/powerpc/kernel/asm-offsets.c
+--- linux-2.6.20.4/arch/powerpc/kernel/asm-offsets.c 2007-02-06 03:00:12 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/powerpc/kernel/asm-offsets.c 2007-02-06 03:05:21 +0100
+@@ -244,6 +244,7 @@ int main(void)
+
+ DEFINE(CLONE_VM, CLONE_VM);
+ DEFINE(CLONE_UNTRACED, CLONE_UNTRACED);
++ DEFINE(CLONE_KTHREAD, CLONE_KTHREAD);
+
+ #ifndef CONFIG_PPC64
+ DEFINE(MM_PGD, offsetof(struct mm_struct, pgd));
+diff -NurpP --minimal linux-2.6.20.4/arch/powerpc/kernel/irq.c linux-2.6.20.4-vs2.2.0-rc20/arch/powerpc/kernel/irq.c
+--- linux-2.6.20.4/arch/powerpc/kernel/irq.c 2007-02-06 03:00:12 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/powerpc/kernel/irq.c 2007-02-06 03:05:21 +0100
+@@ -53,6 +53,7 @@
+ #include <linux/mutex.h>
+ #include <linux/bootmem.h>
+ #include <linux/pci.h>
++#include <linux/vs_context.h>
+
+ #include <asm/uaccess.h>
+ #include <asm/system.h>
+diff -NurpP --minimal linux-2.6.20.4/arch/powerpc/kernel/misc_32.S linux-2.6.20.4-vs2.2.0-rc20/arch/powerpc/kernel/misc_32.S
+--- linux-2.6.20.4/arch/powerpc/kernel/misc_32.S 2006-11-30 21:18:31 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/powerpc/kernel/misc_32.S 2007-02-06 03:05:21 +0100
+@@ -749,7 +749,7 @@ _GLOBAL(kernel_thread)
+ mr r30,r3 /* function */
+ mr r31,r4 /* argument */
+ ori r3,r5,CLONE_VM /* flags */
+- oris r3,r3,CLONE_UNTRACED>>16
++ oris r3,r3,(CLONE_UNTRACED|CLONE_KTHREAD)>>16
+ li r4,0 /* new sp (unused) */
+ li r0,__NR_clone
+ sc
+diff -NurpP --minimal linux-2.6.20.4/arch/powerpc/kernel/misc_64.S linux-2.6.20.4-vs2.2.0-rc20/arch/powerpc/kernel/misc_64.S
+--- linux-2.6.20.4/arch/powerpc/kernel/misc_64.S 2006-11-30 21:18:31 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/powerpc/kernel/misc_64.S 2007-02-06 03:05:21 +0100
+@@ -394,7 +394,7 @@ _GLOBAL(kernel_thread)
+ mr r29,r3
+ mr r30,r4
+ ori r3,r5,CLONE_VM /* flags */
+- oris r3,r3,(CLONE_UNTRACED>>16)
++ oris r3,r3,(CLONE_UNTRACED|CLONE_KTHREAD)>>16
+ li r4,0 /* new sp (unused) */
+ li r0,__NR_clone
+ sc
+diff -NurpP --minimal linux-2.6.20.4/arch/powerpc/kernel/process.c linux-2.6.20.4-vs2.2.0-rc20/arch/powerpc/kernel/process.c
+--- linux-2.6.20.4/arch/powerpc/kernel/process.c 2006-11-30 21:18:31 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/powerpc/kernel/process.c 2007-02-06 03:05:21 +0100
+@@ -425,8 +425,9 @@ void show_regs(struct pt_regs * regs)
+ trap = TRAP(regs);
+ if (trap == 0x300 || trap == 0x600)
+ printk("DAR: "REG", DSISR: "REG"\n", regs->dar, regs->dsisr);
+- printk("TASK = %p[%d] '%s' THREAD: %p",
+- current, current->pid, current->comm, task_thread_info(current));
++ printk("TASK = %p[%d,#%u] '%s' THREAD: %p",
++ current, current->pid, current->xid,
++ current->comm, task_thread_info(current));
+
+ #ifdef CONFIG_SMP
+ printk(" CPU: %d", smp_processor_id());
+diff -NurpP --minimal linux-2.6.20.4/arch/powerpc/kernel/sys_ppc32.c linux-2.6.20.4-vs2.2.0-rc20/arch/powerpc/kernel/sys_ppc32.c
+--- linux-2.6.20.4/arch/powerpc/kernel/sys_ppc32.c 2007-02-06 03:00:13 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/powerpc/kernel/sys_ppc32.c 2007-02-06 03:05:21 +0100
+@@ -276,7 +276,7 @@ asmlinkage long compat_sys_gettimeofday(
+ {
+ if (tv) {
+ struct timeval ktv;
+- do_gettimeofday(&ktv);
++ vx_gettimeofday(&ktv);
+ if (put_tv32(tv, &ktv))
+ return -EFAULT;
+ }
+diff -NurpP --minimal linux-2.6.20.4/arch/powerpc/kernel/traps.c linux-2.6.20.4-vs2.2.0-rc20/arch/powerpc/kernel/traps.c
+--- linux-2.6.20.4/arch/powerpc/kernel/traps.c 2007-02-06 03:00:13 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/powerpc/kernel/traps.c 2007-02-06 03:05:21 +0100
+@@ -844,8 +844,9 @@ void nonrecoverable_exception(struct pt_
+
+ void trace_syscall(struct pt_regs *regs)
+ {
+- printk("Task: %p(%d), PC: %08lX/%08lX, Syscall: %3ld, Result: %s%ld %s\n",
+- current, current->pid, regs->nip, regs->link, regs->gpr[0],
++ printk("Task: %p(%d[#%u]), PC: %08lX/%08lX, Syscall: %3ld, Result: %s%ld %s\n",
++ current, current->pid, current->xid,
++ regs->nip, regs->link, regs->gpr[0],
+ regs->ccr&0x10000000?"Error=":"", regs->gpr[3], print_tainted());
+ }
+
+diff -NurpP --minimal linux-2.6.20.4/arch/powerpc/kernel/vdso.c linux-2.6.20.4-vs2.2.0-rc20/arch/powerpc/kernel/vdso.c
+--- linux-2.6.20.4/arch/powerpc/kernel/vdso.c 2007-02-06 03:00:13 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/powerpc/kernel/vdso.c 2007-02-06 03:05:21 +0100
+@@ -22,6 +22,7 @@
+ #include <linux/elf.h>
+ #include <linux/security.h>
+ #include <linux/bootmem.h>
++#include <linux/vs_memory.h>
+
+ #include <asm/pgtable.h>
+ #include <asm/system.h>
+@@ -302,7 +303,7 @@ int arch_setup_additional_pages(struct l
+
+ /* Put vDSO base into mm struct and account for memory usage */
+ current->mm->context.vdso_base = vdso_base;
+- mm->total_vm += (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
++ vx_vmpages_add(mm, (vma->vm_end - vma->vm_start) >> PAGE_SHIFT);
+ up_write(&mm->mmap_sem);
+ return 0;
+
+diff -NurpP --minimal linux-2.6.20.4/arch/powerpc/mm/fault.c linux-2.6.20.4-vs2.2.0-rc20/arch/powerpc/mm/fault.c
+--- linux-2.6.20.4/arch/powerpc/mm/fault.c 2007-02-06 03:00:13 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/powerpc/mm/fault.c 2007-03-10 18:02:51 +0100
+@@ -391,7 +391,8 @@ out_of_memory:
+ down_read(&mm->mmap_sem);
+ goto survive;
+ }
+- printk("VM: killing process %s\n", current->comm);
++ printk("VM: killing process %s(%d:#%u)\n",
++ current->comm, current->pid, current->xid);
+ if (user_mode(regs))
+ do_exit(SIGKILL);
+ return SIGKILL;
+diff -NurpP --minimal linux-2.6.20.4/arch/ppc/Kconfig linux-2.6.20.4-vs2.2.0-rc20/arch/ppc/Kconfig
+--- linux-2.6.20.4/arch/ppc/Kconfig 2007-02-06 03:00:16 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/ppc/Kconfig 2007-02-06 03:05:21 +0100
+@@ -1445,6 +1445,8 @@ source "arch/powerpc/oprofile/Kconfig"
+
+ source "arch/ppc/Kconfig.debug"
+
++source "kernel/vserver/Kconfig"
++
+ source "security/Kconfig"
+
+ source "crypto/Kconfig"
+diff -NurpP --minimal linux-2.6.20.4/arch/ppc/kernel/asm-offsets.c linux-2.6.20.4-vs2.2.0-rc20/arch/ppc/kernel/asm-offsets.c
+--- linux-2.6.20.4/arch/ppc/kernel/asm-offsets.c 2006-09-20 16:58:01 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/ppc/kernel/asm-offsets.c 2007-02-06 03:05:21 +0100
+@@ -121,6 +121,7 @@ main(void)
+ DEFINE(TRAP, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, trap));
+ DEFINE(CLONE_VM, CLONE_VM);
+ DEFINE(CLONE_UNTRACED, CLONE_UNTRACED);
++ DEFINE(CLONE_KTHREAD, CLONE_KTHREAD);
+ DEFINE(MM_PGD, offsetof(struct mm_struct, pgd));
+
+ /* About the CPU features table */
+diff -NurpP --minimal linux-2.6.20.4/arch/ppc/kernel/misc.S linux-2.6.20.4-vs2.2.0-rc20/arch/ppc/kernel/misc.S
+--- linux-2.6.20.4/arch/ppc/kernel/misc.S 2006-11-30 21:18:32 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/ppc/kernel/misc.S 2007-02-06 03:05:21 +0100
+@@ -848,7 +848,7 @@ _GLOBAL(kernel_thread)
+ mr r30,r3 /* function */
+ mr r31,r4 /* argument */
+ ori r3,r5,CLONE_VM /* flags */
+- oris r3,r3,CLONE_UNTRACED>>16
++ oris r3,r3,(CLONE_UNTRACED|CLONE_KTHREAD)>>16
+ li r4,0 /* new sp (unused) */
+ li r0,__NR_clone
+ sc
+diff -NurpP --minimal linux-2.6.20.4/arch/ppc/kernel/traps.c linux-2.6.20.4-vs2.2.0-rc20/arch/ppc/kernel/traps.c
+--- linux-2.6.20.4/arch/ppc/kernel/traps.c 2007-02-06 03:00:16 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/ppc/kernel/traps.c 2007-02-06 03:05:21 +0100
+@@ -696,8 +696,9 @@ void nonrecoverable_exception(struct pt_
+
+ void trace_syscall(struct pt_regs *regs)
+ {
+- printk("Task: %p(%d), PC: %08lX/%08lX, Syscall: %3ld, Result: %s%ld %s\n",
+- current, current->pid, regs->nip, regs->link, regs->gpr[0],
++ printk("Task: %p(%d[#%u]), PC: %08lX/%08lX, Syscall: %3ld, Result: %s%ld %s\n",
++ current, current->pid, current->xid,
++ regs->nip, regs->link, regs->gpr[0],
+ regs->ccr&0x10000000?"Error=":"", regs->gpr[3], print_tainted());
+ }
+
+diff -NurpP --minimal linux-2.6.20.4/arch/ppc/mm/fault.c linux-2.6.20.4-vs2.2.0-rc20/arch/ppc/mm/fault.c
+--- linux-2.6.20.4/arch/ppc/mm/fault.c 2006-11-30 21:18:32 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/ppc/mm/fault.c 2007-03-10 18:02:51 +0100
+@@ -296,7 +296,8 @@ out_of_memory:
+ down_read(&mm->mmap_sem);
+ goto survive;
+ }
+- printk("VM: killing process %s\n", current->comm);
++ printk("VM: killing process %s(%d:#%u)\n",
++ current->comm, current->pid, current->xid);
+ if (user_mode(regs))
+ do_exit(SIGKILL);
+ return SIGKILL;
+diff -NurpP --minimal linux-2.6.20.4/arch/s390/Kconfig linux-2.6.20.4-vs2.2.0-rc20/arch/s390/Kconfig
+--- linux-2.6.20.4/arch/s390/Kconfig 2007-02-06 03:00:17 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/s390/Kconfig 2007-02-06 03:05:21 +0100
+@@ -522,6 +522,8 @@ endmenu
+
+ source "arch/s390/Kconfig.debug"
+
++source "kernel/vserver/Kconfig"
++
+ source "security/Kconfig"
+
+ source "crypto/Kconfig"
+diff -NurpP --minimal linux-2.6.20.4/arch/s390/kernel/compat_linux.c linux-2.6.20.4-vs2.2.0-rc20/arch/s390/kernel/compat_linux.c
+--- linux-2.6.20.4/arch/s390/kernel/compat_linux.c 2006-11-30 21:18:32 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/s390/kernel/compat_linux.c 2007-02-06 03:05:21 +0100
+@@ -600,7 +600,7 @@ asmlinkage long sys32_gettimeofday(struc
+ {
+ if (tv) {
+ struct timeval ktv;
+- do_gettimeofday(&ktv);
++ vx_gettimeofday(&ktv);
+ if (put_tv32(tv, &ktv))
+ return -EFAULT;
+ }
+diff -NurpP --minimal linux-2.6.20.4/arch/s390/kernel/process.c linux-2.6.20.4-vs2.2.0-rc20/arch/s390/kernel/process.c
+--- linux-2.6.20.4/arch/s390/kernel/process.c 2006-11-30 21:18:32 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/s390/kernel/process.c 2007-02-06 03:05:21 +0100
+@@ -165,9 +165,9 @@ void show_regs(struct pt_regs *regs)
+ struct task_struct *tsk = current;
+
+ printk("CPU: %d %s\n", task_thread_info(tsk)->cpu, print_tainted());
+- printk("Process %s (pid: %d, task: %p, ksp: %p)\n",
+- current->comm, current->pid, (void *) tsk,
+- (void *) tsk->thread.ksp);
++ printk("Process %s (pid: %d[#%u], task: %p, ksp: %p)\n",
++ current->comm, current->pid, current->xid,
++ (void *) tsk, (void *) tsk->thread.ksp);
+
+ show_registers(regs);
+ /* Show stack backtrace if pt_regs is from kernel mode */
+@@ -198,7 +198,7 @@ int kernel_thread(int (*fn)(void *), voi
+ regs.orig_gpr2 = -1;
+
+ /* Ok, create the new process.. */
+- return do_fork(flags | CLONE_VM | CLONE_UNTRACED,
++ return do_fork(flags | CLONE_VM | CLONE_UNTRACED | CLONE_KTHREAD,
+ 0, &regs, 0, NULL, NULL);
+ }
+
+diff -NurpP --minimal linux-2.6.20.4/arch/s390/kernel/ptrace.c linux-2.6.20.4-vs2.2.0-rc20/arch/s390/kernel/ptrace.c
+--- linux-2.6.20.4/arch/s390/kernel/ptrace.c 2006-06-18 04:52:33 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/s390/kernel/ptrace.c 2007-02-06 03:05:21 +0100
+@@ -33,6 +33,7 @@
+ #include <linux/security.h>
+ #include <linux/audit.h>
+ #include <linux/signal.h>
++#include <linux/vs_base.h>
+
+ #include <asm/segment.h>
+ #include <asm/page.h>
+@@ -723,7 +724,13 @@ sys_ptrace(long request, long pid, long
+ goto out;
+ }
+
++ if (!vx_check(vx_task_xid(child), VS_WATCH_P|VS_IDENT)) {
++ ret = -EPERM;
++ goto out_tsk;
++ }
++
+ ret = do_ptrace(child, request, addr, data);
++out_tsk:
+ put_task_struct(child);
+ out:
+ unlock_kernel();
+diff -NurpP --minimal linux-2.6.20.4/arch/s390/kernel/syscalls.S linux-2.6.20.4-vs2.2.0-rc20/arch/s390/kernel/syscalls.S
+--- linux-2.6.20.4/arch/s390/kernel/syscalls.S 2006-11-30 21:18:32 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/s390/kernel/syscalls.S 2007-02-06 03:05:21 +0100
+@@ -271,7 +271,7 @@ SYSCALL(sys_clock_settime,sys_clock_sett
+ SYSCALL(sys_clock_gettime,sys_clock_gettime,sys32_clock_gettime_wrapper) /* 260 */
+ SYSCALL(sys_clock_getres,sys_clock_getres,sys32_clock_getres_wrapper)
+ SYSCALL(sys_clock_nanosleep,sys_clock_nanosleep,sys32_clock_nanosleep_wrapper)
+-NI_SYSCALL /* reserved for vserver */
++SYSCALL(sys_vserver,sys_vserver,sys32_vserver)
+ SYSCALL(s390_fadvise64_64,sys_ni_syscall,sys32_fadvise64_64_wrapper)
+ SYSCALL(sys_statfs64,sys_statfs64,compat_sys_statfs64_wrapper)
+ SYSCALL(sys_fstatfs64,sys_fstatfs64,compat_sys_fstatfs64_wrapper)
+diff -NurpP --minimal linux-2.6.20.4/arch/s390/mm/fault.c linux-2.6.20.4-vs2.2.0-rc20/arch/s390/mm/fault.c
+--- linux-2.6.20.4/arch/s390/mm/fault.c 2007-02-06 03:00:17 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/s390/mm/fault.c 2007-03-10 18:02:51 +0100
+@@ -359,7 +359,8 @@ out_of_memory:
+ down_read(&mm->mmap_sem);
+ goto survive;
+ }
+- printk("VM: killing process %s\n", tsk->comm);
++ printk("VM: killing process %s(%d:#%u)\n",
++ tsk->comm, tsk->pid, tsk->xid);
+ if (regs->psw.mask & PSW_MASK_PSTATE)
+ do_exit(SIGKILL);
+ goto no_context;
+diff -NurpP --minimal linux-2.6.20.4/arch/sh/Kconfig linux-2.6.20.4-vs2.2.0-rc20/arch/sh/Kconfig
+--- linux-2.6.20.4/arch/sh/Kconfig 2007-02-06 03:00:17 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sh/Kconfig 2007-02-06 03:05:21 +0100
+@@ -709,6 +709,8 @@ source "arch/sh/oprofile/Kconfig"
+
+ source "arch/sh/Kconfig.debug"
+
++source "kernel/vserver/Kconfig"
++
+ source "security/Kconfig"
+
+ source "crypto/Kconfig"
+diff -NurpP --minimal linux-2.6.20.4/arch/sh/kernel/irq.c linux-2.6.20.4-vs2.2.0-rc20/arch/sh/kernel/irq.c
+--- linux-2.6.20.4/arch/sh/kernel/irq.c 2007-02-06 03:00:17 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sh/kernel/irq.c 2007-02-06 03:09:33 +0100
+@@ -13,6 +13,7 @@
+ #include <linux/seq_file.h>
+ #include <linux/io.h>
+ #include <linux/irq.h>
++#include <linux/vs_context.h>
+ #include <asm/processor.h>
+ #include <asm/uaccess.h>
+ #include <asm/thread_info.h>
+diff -NurpP --minimal linux-2.6.20.4/arch/sh/kernel/kgdb_stub.c linux-2.6.20.4-vs2.2.0-rc20/arch/sh/kernel/kgdb_stub.c
+--- linux-2.6.20.4/arch/sh/kernel/kgdb_stub.c 2006-11-30 21:18:34 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sh/kernel/kgdb_stub.c 2007-02-06 03:05:21 +0100
+@@ -389,7 +389,7 @@ static struct task_struct *get_thread(in
+ if (pid == PID_MAX) pid = 0;
+
+ /* First check via PID */
+- thread = find_task_by_pid(pid);
++ thread = find_task_by_real_pid(pid);
+
+ if (thread)
+ return thread;
+diff -NurpP --minimal linux-2.6.20.4/arch/sh/kernel/process.c linux-2.6.20.4-vs2.2.0-rc20/arch/sh/kernel/process.c
+--- linux-2.6.20.4/arch/sh/kernel/process.c 2007-02-06 03:00:17 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sh/kernel/process.c 2007-02-06 03:05:21 +0100
+@@ -104,7 +104,8 @@ void machine_power_off(void)
+ void show_regs(struct pt_regs * regs)
+ {
+ printk("\n");
+- printk("Pid : %d, Comm: %20s\n", current->pid, current->comm);
++ printk("Pid : %d:#%u, Comm: %20s\n",
++ current->pid, current->xid, current->comm);
+ print_symbol("PC is at %s\n", instruction_pointer(regs));
+ printk("PC : %08lx SP : %08lx SR : %08lx ",
+ regs->pc, regs->regs[15], regs->sr);
+@@ -164,7 +165,8 @@ int kernel_thread(int (*fn)(void *), voi
+ regs.sr = (1 << 30);
+
+ /* Ok, create the new process.. */
+- return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, &regs, 0, NULL, NULL);
++ return do_fork(flags | CLONE_VM | CLONE_UNTRACED | CLONE_KTHREAD,
++ 0, &regs, 0, NULL, NULL);
+ }
+
+ /*
+diff -NurpP --minimal linux-2.6.20.4/arch/sh/kernel/vsyscall/vsyscall.c linux-2.6.20.4-vs2.2.0-rc20/arch/sh/kernel/vsyscall/vsyscall.c
+--- linux-2.6.20.4/arch/sh/kernel/vsyscall/vsyscall.c 2007-02-06 03:00:17 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sh/kernel/vsyscall/vsyscall.c 2007-02-06 03:05:21 +0100
+@@ -17,6 +17,7 @@
+ #include <linux/gfp.h>
+ #include <linux/module.h>
+ #include <linux/elf.h>
++#include <linux/vs_memory.h>
+
+ /*
+ * Should the kernel map a VDSO page into processes and pass its
+@@ -120,7 +121,7 @@ int arch_setup_additional_pages(struct l
+
+ current->mm->context.vdso = (void *)addr;
+
+- mm->total_vm++;
++ vx_vmpages_inc(mm);
+ up_fail:
+ up_write(&mm->mmap_sem);
+ return ret;
+diff -NurpP --minimal linux-2.6.20.4/arch/sh/mm/fault.c linux-2.6.20.4-vs2.2.0-rc20/arch/sh/mm/fault.c
+--- linux-2.6.20.4/arch/sh/mm/fault.c 2007-02-06 03:00:17 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sh/mm/fault.c 2007-03-10 18:02:51 +0100
+@@ -202,7 +202,8 @@ out_of_memory:
+ down_read(&mm->mmap_sem);
+ goto survive;
+ }
+- printk("VM: killing process %s\n", tsk->comm);
++ printk("VM: killing process %s(%d:#%u)\n",
++ tsk->comm, tsk->pid, tsk->xid);
+ if (user_mode(regs))
+ do_exit(SIGKILL);
+ goto no_context;
+diff -NurpP --minimal linux-2.6.20.4/arch/sh64/kernel/process.c linux-2.6.20.4-vs2.2.0-rc20/arch/sh64/kernel/process.c
+--- linux-2.6.20.4/arch/sh64/kernel/process.c 2006-11-30 21:18:35 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sh64/kernel/process.c 2007-02-06 03:05:21 +0100
+@@ -400,8 +400,8 @@ int kernel_thread(int (*fn)(void *), voi
+ regs.pc = (unsigned long)kernel_thread_helper;
+ regs.sr = (1 << 30);
+
+- return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0,
+- &regs, 0, NULL, NULL);
++ return do_fork(flags | CLONE_VM | CLONE_UNTRACED | CLONE_KTHREAD,
++ 0, &regs, 0, NULL, NULL);
+ }
+
+ /*
+diff -NurpP --minimal linux-2.6.20.4/arch/sh64/mm/fault.c linux-2.6.20.4-vs2.2.0-rc20/arch/sh64/mm/fault.c
+--- linux-2.6.20.4/arch/sh64/mm/fault.c 2007-02-06 03:00:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sh64/mm/fault.c 2007-03-10 18:02:51 +0100
+@@ -82,7 +82,7 @@ static inline void print_vma(struct vm_a
+
+ static inline void print_task(struct task_struct *tsk)
+ {
+- printk("Task pid %d\n", tsk->pid);
++ printk("Task pid %d:#%u\n", tsk->pid, tsk->xid);
+ }
+
+ static pte_t *lookup_pte(struct mm_struct *mm, unsigned long address)
+@@ -331,7 +331,8 @@ out_of_memory:
+ down_read(&mm->mmap_sem);
+ goto survive;
+ }
+- printk("VM: killing process %s\n", tsk->comm);
++ printk("VM: killing process %s(%d:#%u)\n",
++ tsk->comm, tsk->pid, tsk->xid);
+ if (user_mode(regs))
+ do_exit(SIGKILL);
+ goto no_context;
+diff -NurpP --minimal linux-2.6.20.4/arch/sparc/Kconfig linux-2.6.20.4-vs2.2.0-rc20/arch/sparc/Kconfig
+--- linux-2.6.20.4/arch/sparc/Kconfig 2007-02-06 03:00:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sparc/Kconfig 2007-02-06 03:05:21 +0100
+@@ -306,6 +306,8 @@ endmenu
+
+ source "arch/sparc/Kconfig.debug"
+
++source "kernel/vserver/Kconfig"
++
+ source "security/Kconfig"
+
+ source "crypto/Kconfig"
+diff -NurpP --minimal linux-2.6.20.4/arch/sparc/kernel/process.c linux-2.6.20.4-vs2.2.0-rc20/arch/sparc/kernel/process.c
+--- linux-2.6.20.4/arch/sparc/kernel/process.c 2007-02-06 03:00:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sparc/kernel/process.c 2007-02-06 03:05:21 +0100
+@@ -706,7 +706,8 @@ pid_t kernel_thread(int (*fn)(void *), v
+ /* Notreached by child. */
+ "1: mov %%o0, %0\n\t" :
+ "=r" (retval) :
+- "i" (__NR_clone), "r" (flags | CLONE_VM | CLONE_UNTRACED),
++ "i" (__NR_clone), "r" (flags |
++ CLONE_VM | CLONE_UNTRACED | CLONE_KTHREAD),
+ "i" (__NR_exit), "r" (fn), "r" (arg) :
+ "g1", "g2", "g3", "o0", "o1", "memory", "cc");
+ return retval;
+diff -NurpP --minimal linux-2.6.20.4/arch/sparc/kernel/ptrace.c linux-2.6.20.4-vs2.2.0-rc20/arch/sparc/kernel/ptrace.c
+--- linux-2.6.20.4/arch/sparc/kernel/ptrace.c 2007-02-06 03:00:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sparc/kernel/ptrace.c 2007-02-06 03:05:21 +0100
+@@ -19,6 +19,7 @@
+ #include <linux/smp_lock.h>
+ #include <linux/security.h>
+ #include <linux/signal.h>
++#include <linux/vs_base.h>
+
+ #include <asm/pgtable.h>
+ #include <asm/system.h>
+@@ -302,6 +303,10 @@ asmlinkage void do_ptrace(struct pt_regs
+ pt_error_return(regs, -ret);
+ goto out;
+ }
++ if (!vx_check(vx_task_xid(child), VS_WATCH_P|VS_IDENT)) {
++ pt_error_return(regs, ESRCH);
++ goto out_tsk;
++ }
+
+ if ((current->personality == PER_SUNOS && request == PTRACE_SUNATTACH)
+ || (current->personality != PER_SUNOS && request == PTRACE_ATTACH)) {
+diff -NurpP --minimal linux-2.6.20.4/arch/sparc/kernel/systbls.S linux-2.6.20.4-vs2.2.0-rc20/arch/sparc/kernel/systbls.S
+--- linux-2.6.20.4/arch/sparc/kernel/systbls.S 2006-11-30 21:18:35 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sparc/kernel/systbls.S 2007-02-06 03:05:21 +0100
+@@ -71,7 +71,7 @@ sys_call_table:
+ /*250*/ .long sparc_mremap, sys_sysctl, sys_getsid, sys_fdatasync, sys_nfsservctl
+ /*255*/ .long sys_sync_file_range, sys_clock_settime, sys_clock_gettime, sys_clock_getres, sys_clock_nanosleep
+ /*260*/ .long sys_sched_getaffinity, sys_sched_setaffinity, sys_timer_settime, sys_timer_gettime, sys_timer_getoverrun
+-/*265*/ .long sys_timer_delete, sys_timer_create, sys_nis_syscall, sys_io_setup, sys_io_destroy
++/*265*/ .long sys_timer_delete, sys_timer_create, sys_vserver, sys_io_setup, sys_io_destroy
+ /*270*/ .long sys_io_submit, sys_io_cancel, sys_io_getevents, sys_mq_open, sys_mq_unlink
+ /*275*/ .long sys_mq_timedsend, sys_mq_timedreceive, sys_mq_notify, sys_mq_getsetattr, sys_waitid
+ /*280*/ .long sys_tee, sys_add_key, sys_request_key, sys_keyctl, sys_openat
+diff -NurpP --minimal linux-2.6.20.4/arch/sparc/kernel/traps.c linux-2.6.20.4-vs2.2.0-rc20/arch/sparc/kernel/traps.c
+--- linux-2.6.20.4/arch/sparc/kernel/traps.c 2006-09-20 16:58:06 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sparc/kernel/traps.c 2007-02-06 03:05:21 +0100
+@@ -99,7 +99,8 @@ void die_if_kernel(char *str, struct pt_
+ " /_| \\__/ |_\\\n"
+ " \\__U_/\n");
+
+- printk("%s(%d): %s [#%d]\n", current->comm, current->pid, str, ++die_counter);
++ printk("%s(%d[#%u]): %s [#%d]\n", current->comm,
++ current->pid, current->xid, str, ++die_counter);
+ show_regs(regs);
+
+ __SAVE; __SAVE; __SAVE; __SAVE;
+diff -NurpP --minimal linux-2.6.20.4/arch/sparc/mm/fault.c linux-2.6.20.4-vs2.2.0-rc20/arch/sparc/mm/fault.c
+--- linux-2.6.20.4/arch/sparc/mm/fault.c 2006-01-03 17:29:19 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sparc/mm/fault.c 2007-03-10 18:02:51 +0100
+@@ -368,7 +368,8 @@ no_context:
+ */
+ out_of_memory:
+ up_read(&mm->mmap_sem);
+- printk("VM: killing process %s\n", tsk->comm);
++ printk("VM: killing process %s(%d:#%u)\n",
++ tsk->comm, tsk->pid, tsk->xid);
+ if (from_user)
+ do_exit(SIGKILL);
+ goto no_context;
+diff -NurpP --minimal linux-2.6.20.4/arch/sparc64/Kconfig linux-2.6.20.4-vs2.2.0-rc20/arch/sparc64/Kconfig
+--- linux-2.6.20.4/arch/sparc64/Kconfig 2007-02-06 03:00:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sparc64/Kconfig 2007-02-06 03:05:21 +0100
+@@ -447,6 +447,8 @@ endmenu
+
+ source "arch/sparc64/Kconfig.debug"
+
++source "kernel/vserver/Kconfig"
++
+ source "security/Kconfig"
+
+ source "crypto/Kconfig"
+diff -NurpP --minimal linux-2.6.20.4/arch/sparc64/kernel/binfmt_aout32.c linux-2.6.20.4-vs2.2.0-rc20/arch/sparc64/kernel/binfmt_aout32.c
+--- linux-2.6.20.4/arch/sparc64/kernel/binfmt_aout32.c 2007-02-06 03:00:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sparc64/kernel/binfmt_aout32.c 2007-02-06 03:05:21 +0100
+@@ -27,6 +27,7 @@
+ #include <linux/binfmts.h>
+ #include <linux/personality.h>
+ #include <linux/init.h>
++#include <linux/vs_memory.h>
+
+ #include <asm/system.h>
+ #include <asm/uaccess.h>
+diff -NurpP --minimal linux-2.6.20.4/arch/sparc64/kernel/process.c linux-2.6.20.4-vs2.2.0-rc20/arch/sparc64/kernel/process.c
+--- linux-2.6.20.4/arch/sparc64/kernel/process.c 2006-09-20 16:58:06 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sparc64/kernel/process.c 2007-02-06 03:05:21 +0100
+@@ -696,7 +696,8 @@ pid_t kernel_thread(int (*fn)(void *), v
+ /* Notreached by child. */
+ "1:" :
+ "=r" (retval) :
+- "i" (__NR_clone), "r" (flags | CLONE_VM | CLONE_UNTRACED),
++ "i" (__NR_clone), "r" (flags |
++ CLONE_VM | CLONE_UNTRACED | CLONE_KTHREAD),
+ "i" (__NR_exit), "r" (fn), "r" (arg) :
+ "g1", "g2", "g3", "o0", "o1", "memory", "cc");
+ return retval;
+diff -NurpP --minimal linux-2.6.20.4/arch/sparc64/kernel/ptrace.c linux-2.6.20.4-vs2.2.0-rc20/arch/sparc64/kernel/ptrace.c
+--- linux-2.6.20.4/arch/sparc64/kernel/ptrace.c 2007-02-06 03:00:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sparc64/kernel/ptrace.c 2007-02-06 03:05:21 +0100
+@@ -22,6 +22,7 @@
+ #include <linux/seccomp.h>
+ #include <linux/audit.h>
+ #include <linux/signal.h>
++#include <linux/vs_base.h>
+
+ #include <asm/asi.h>
+ #include <asm/pgtable.h>
+@@ -215,6 +216,10 @@ asmlinkage void do_ptrace(struct pt_regs
+ pt_error_return(regs, -ret);
+ goto out;
+ }
++ if (!vx_check(vx_task_xid(child), VS_WATCH_P|VS_IDENT)) {
++ pt_error_return(regs, ESRCH);
++ goto out_tsk;
++ }
+
+ if ((current->personality == PER_SUNOS && request == PTRACE_SUNATTACH)
+ || (current->personality != PER_SUNOS && request == PTRACE_ATTACH)) {
+diff -NurpP --minimal linux-2.6.20.4/arch/sparc64/kernel/sys_sparc32.c linux-2.6.20.4-vs2.2.0-rc20/arch/sparc64/kernel/sys_sparc32.c
+--- linux-2.6.20.4/arch/sparc64/kernel/sys_sparc32.c 2006-11-30 21:18:35 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sparc64/kernel/sys_sparc32.c 2007-02-06 03:05:21 +0100
+@@ -793,7 +793,7 @@ asmlinkage long sys32_gettimeofday(struc
+ {
+ if (tv) {
+ struct timeval ktv;
+- do_gettimeofday(&ktv);
++ vx_gettimeofday(&ktv);
+ if (put_tv32(tv, &ktv))
+ return -EFAULT;
+ }
+diff -NurpP --minimal linux-2.6.20.4/arch/sparc64/kernel/systbls.S linux-2.6.20.4-vs2.2.0-rc20/arch/sparc64/kernel/systbls.S
+--- linux-2.6.20.4/arch/sparc64/kernel/systbls.S 2006-11-30 21:18:35 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sparc64/kernel/systbls.S 2007-02-06 03:05:21 +0100
+@@ -72,7 +72,7 @@ sys_call_table32:
+ /*250*/ .word sys32_mremap, sys32_sysctl, sys32_getsid, sys_fdatasync, sys32_nfsservctl
+ .word sys32_sync_file_range, compat_sys_clock_settime, compat_sys_clock_gettime, compat_sys_clock_getres, sys32_clock_nanosleep
+ /*260*/ .word compat_sys_sched_getaffinity, compat_sys_sched_setaffinity, sys32_timer_settime, compat_sys_timer_gettime, sys_timer_getoverrun
+- .word sys_timer_delete, compat_sys_timer_create, sys_ni_syscall, compat_sys_io_setup, sys_io_destroy
++ .word sys_timer_delete, compat_sys_timer_create, sys32_vserver, compat_sys_io_setup, sys_io_destroy
+ /*270*/ .word sys32_io_submit, sys_io_cancel, compat_sys_io_getevents, sys32_mq_open, sys_mq_unlink
+ .word compat_sys_mq_timedsend, compat_sys_mq_timedreceive, compat_sys_mq_notify, compat_sys_mq_getsetattr, compat_sys_waitid
+ /*280*/ .word sys32_tee, sys_add_key, sys_request_key, sys_keyctl, compat_sys_openat
+@@ -142,7 +142,7 @@ sys_call_table:
+ /*250*/ .word sys64_mremap, sys_sysctl, sys_getsid, sys_fdatasync, sys_nfsservctl
+ .word sys_sync_file_range, sys_clock_settime, sys_clock_gettime, sys_clock_getres, sys_clock_nanosleep
+ /*260*/ .word sys_sched_getaffinity, sys_sched_setaffinity, sys_timer_settime, sys_timer_gettime, sys_timer_getoverrun
+- .word sys_timer_delete, sys_timer_create, sys_ni_syscall, sys_io_setup, sys_io_destroy
++ .word sys_timer_delete, sys_timer_create, sys_vserver, sys_io_setup, sys_io_destroy
+ /*270*/ .word sys_io_submit, sys_io_cancel, sys_io_getevents, sys_mq_open, sys_mq_unlink
+ .word sys_mq_timedsend, sys_mq_timedreceive, sys_mq_notify, sys_mq_getsetattr, sys_waitid
+ /*280*/ .word sys_tee, sys_add_key, sys_request_key, sys_keyctl, sys_openat
+diff -NurpP --minimal linux-2.6.20.4/arch/sparc64/kernel/traps.c linux-2.6.20.4-vs2.2.0-rc20/arch/sparc64/kernel/traps.c
+--- linux-2.6.20.4/arch/sparc64/kernel/traps.c 2007-02-06 03:00:20 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sparc64/kernel/traps.c 2007-02-06 03:05:21 +0100
+@@ -2233,7 +2233,8 @@ void die_if_kernel(char *str, struct pt_
+ " /_| \\__/ |_\\\n"
+ " \\__U_/\n");
+
+- printk("%s(%d): %s [#%d]\n", current->comm, current->pid, str, ++die_counter);
++ printk("%s(%d[#%u]): %s [#%d]\n", current->comm,
++ current->pid, current->xid, str, ++die_counter);
+ notify_die(DIE_OOPS, str, regs, 0, 255, SIGSEGV);
+ __asm__ __volatile__("flushw");
+ __show_regs(regs);
+diff -NurpP --minimal linux-2.6.20.4/arch/sparc64/mm/fault.c linux-2.6.20.4-vs2.2.0-rc20/arch/sparc64/mm/fault.c
+--- linux-2.6.20.4/arch/sparc64/mm/fault.c 2006-09-20 16:58:06 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sparc64/mm/fault.c 2007-03-10 18:02:51 +0100
+@@ -484,7 +484,8 @@ handle_kernel_fault:
+ out_of_memory:
+ insn = get_fault_insn(regs, insn);
+ up_read(&mm->mmap_sem);
+- printk("VM: killing process %s\n", current->comm);
++ printk("VM: killing process %s(%d:#%u)\n",
++ current->comm, current->pid, current->xid);
+ if (!(regs->tstate & TSTATE_PRIV))
+ do_exit(SIGKILL);
+ goto handle_kernel_fault;
+diff -NurpP --minimal linux-2.6.20.4/arch/sparc64/solaris/fs.c linux-2.6.20.4-vs2.2.0-rc20/arch/sparc64/solaris/fs.c
+--- linux-2.6.20.4/arch/sparc64/solaris/fs.c 2007-02-06 03:00:21 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/sparc64/solaris/fs.c 2007-02-06 03:05:21 +0100
+@@ -368,7 +368,7 @@ static int report_statvfs(struct vfsmoun
+ int j = strlen (p);
+
+ if (j > 15) j = 15;
+- if (IS_RDONLY(inode)) i = 1;
++ if (IS_RDONLY(inode) || MNT_IS_RDONLY(mnt)) i = 1;
+ if (mnt->mnt_flags & MNT_NOSUID) i |= 2;
+ if (!sysv_valid_dev(inode->i_sb->s_dev))
+ return -EOVERFLOW;
+@@ -404,7 +404,7 @@ static int report_statvfs64(struct vfsmo
+ int j = strlen (p);
+
+ if (j > 15) j = 15;
+- if (IS_RDONLY(inode)) i = 1;
++ if (IS_RDONLY(inode) || MNT_IS_RDONLY(mnt)) i = 1;
+ if (mnt->mnt_flags & MNT_NOSUID) i |= 2;
+ if (!sysv_valid_dev(inode->i_sb->s_dev))
+ return -EOVERFLOW;
+diff -NurpP --minimal linux-2.6.20.4/arch/um/Kconfig linux-2.6.20.4-vs2.2.0-rc20/arch/um/Kconfig
+--- linux-2.6.20.4/arch/um/Kconfig 2007-02-06 03:00:21 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/um/Kconfig 2007-02-06 03:05:21 +0100
+@@ -311,6 +311,8 @@ source "drivers/connector/Kconfig"
+
+ source "fs/Kconfig"
+
++source "kernel/vserver/Kconfig"
++
+ source "security/Kconfig"
+
+ source "crypto/Kconfig"
+diff -NurpP --minimal linux-2.6.20.4/arch/um/kernel/trap.c linux-2.6.20.4-vs2.2.0-rc20/arch/um/kernel/trap.c
+--- linux-2.6.20.4/arch/um/kernel/trap.c 2006-11-30 21:18:36 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/um/kernel/trap.c 2007-03-10 18:02:51 +0100
+@@ -193,7 +193,8 @@ unsigned long segv(struct faultinfo fi,
+ current->thread.arch.faultinfo = fi;
+ force_sig_info(SIGBUS, &si, current);
+ } else if (err == -ENOMEM) {
+- printk("VM: killing process %s\n", current->comm);
++ printk("VM: killing process %s(%d:#%u)\n",
++ current->comm, current->pid, current->xid);
+ do_exit(SIGKILL);
+ } else {
+ BUG_ON(err != -EFAULT);
+diff -NurpP --minimal linux-2.6.20.4/arch/v850/Kconfig linux-2.6.20.4-vs2.2.0-rc20/arch/v850/Kconfig
+--- linux-2.6.20.4/arch/v850/Kconfig 2007-02-06 03:00:21 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/v850/Kconfig 2007-02-06 03:05:21 +0100
+@@ -334,6 +334,8 @@ source "drivers/usb/Kconfig"
+
+ source "arch/v850/Kconfig.debug"
+
++source "kernel/vserver/Kconfig"
++
+ source "security/Kconfig"
+
+ source "crypto/Kconfig"
+diff -NurpP --minimal linux-2.6.20.4/arch/v850/kernel/process.c linux-2.6.20.4-vs2.2.0-rc20/arch/v850/kernel/process.c
+--- linux-2.6.20.4/arch/v850/kernel/process.c 2006-09-20 16:58:06 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/v850/kernel/process.c 2007-02-06 03:05:21 +0100
+@@ -83,7 +83,7 @@ int kernel_thread (int (*fn)(void *), vo
+ /* Clone this thread. Note that we don't pass the clone syscall's
+ second argument -- it's ignored for calls from kernel mode (the
+ child's SP is always set to the top of the kernel stack). */
+- arg0 = flags | CLONE_VM;
++ arg0 = flags | CLONE_VM | CLONE_KTHREAD;
+ syscall = __NR_clone;
+ asm volatile ("trap " SYSCALL_SHORT_TRAP
+ : "=r" (ret), "=r" (syscall)
+diff -NurpP --minimal linux-2.6.20.4/arch/v850/kernel/ptrace.c linux-2.6.20.4-vs2.2.0-rc20/arch/v850/kernel/ptrace.c
+--- linux-2.6.20.4/arch/v850/kernel/ptrace.c 2006-04-09 13:49:44 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/v850/kernel/ptrace.c 2007-02-06 03:05:21 +0100
+@@ -24,6 +24,7 @@
+ #include <linux/smp_lock.h>
+ #include <linux/ptrace.h>
+ #include <linux/signal.h>
++#include <linux/vs_base.h>
+
+ #include <asm/errno.h>
+ #include <asm/ptrace.h>
+@@ -117,6 +118,9 @@ long arch_ptrace(struct task_struct *chi
+ {
+ int rval;
+
++ if (!vx_check(vx_task_xid(child), VS_WATCH_P|VS_IDENT))
++ goto out;
++
+ switch (request) {
+ unsigned long val, copied;
+
+diff -NurpP --minimal linux-2.6.20.4/arch/x86_64/Kconfig linux-2.6.20.4-vs2.2.0-rc20/arch/x86_64/Kconfig
+--- linux-2.6.20.4/arch/x86_64/Kconfig 2007-02-06 03:00:21 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/x86_64/Kconfig 2007-02-06 03:05:21 +0100
+@@ -735,6 +735,8 @@ endmenu
+
+ source "arch/x86_64/Kconfig.debug"
+
++source "kernel/vserver/Kconfig"
++
+ source "security/Kconfig"
+
+ source "crypto/Kconfig"
+diff -NurpP --minimal linux-2.6.20.4/arch/x86_64/ia32/ia32_aout.c linux-2.6.20.4-vs2.2.0-rc20/arch/x86_64/ia32/ia32_aout.c
+--- linux-2.6.20.4/arch/x86_64/ia32/ia32_aout.c 2007-02-06 03:00:21 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/x86_64/ia32/ia32_aout.c 2007-02-06 03:05:21 +0100
+@@ -25,6 +25,7 @@
+ #include <linux/binfmts.h>
+ #include <linux/personality.h>
+ #include <linux/init.h>
++#include <linux/vs_memory.h>
+
+ #include <asm/system.h>
+ #include <asm/uaccess.h>
+diff -NurpP --minimal linux-2.6.20.4/arch/x86_64/ia32/ia32_binfmt.c linux-2.6.20.4-vs2.2.0-rc20/arch/x86_64/ia32/ia32_binfmt.c
+--- linux-2.6.20.4/arch/x86_64/ia32/ia32_binfmt.c 2007-02-06 03:00:21 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/x86_64/ia32/ia32_binfmt.c 2007-02-06 03:05:21 +0100
+@@ -324,7 +324,8 @@ int ia32_setup_arg_pages(struct linux_bi
+ kmem_cache_free(vm_area_cachep, mpnt);
+ return ret;
+ }
+- mm->stack_vm = mm->total_vm = vma_pages(mpnt);
++ vx_vmpages_sub(mm, mm->total_vm - vma_pages(mpnt));
++ mm->stack_vm = mm->total_vm;
+ }
+
+ for (i = 0 ; i < MAX_ARG_PAGES ; i++) {
+diff -NurpP --minimal linux-2.6.20.4/arch/x86_64/ia32/ia32entry.S linux-2.6.20.4-vs2.2.0-rc20/arch/x86_64/ia32/ia32entry.S
+--- linux-2.6.20.4/arch/x86_64/ia32/ia32entry.S 2006-11-30 21:18:37 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/x86_64/ia32/ia32entry.S 2007-02-06 03:05:21 +0100
+@@ -672,7 +672,7 @@ ia32_sys_call_table:
+ .quad sys_tgkill /* 270 */
+ .quad compat_sys_utimes
+ .quad sys32_fadvise64_64
+- .quad quiet_ni_syscall /* sys_vserver */
++ .quad sys32_vserver
+ .quad sys_mbind
+ .quad compat_sys_get_mempolicy /* 275 */
+ .quad sys_set_mempolicy
+diff -NurpP --minimal linux-2.6.20.4/arch/x86_64/ia32/sys_ia32.c linux-2.6.20.4-vs2.2.0-rc20/arch/x86_64/ia32/sys_ia32.c
+--- linux-2.6.20.4/arch/x86_64/ia32/sys_ia32.c 2006-11-30 21:18:37 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/x86_64/ia32/sys_ia32.c 2007-02-06 03:05:21 +0100
+@@ -454,7 +454,7 @@ sys32_gettimeofday(struct compat_timeval
+ {
+ if (tv) {
+ struct timeval ktv;
+- do_gettimeofday(&ktv);
++ vx_gettimeofday(&ktv);
+ if (put_tv32(tv, &ktv))
+ return -EFAULT;
+ }
+diff -NurpP --minimal linux-2.6.20.4/arch/x86_64/ia32/syscall32.c linux-2.6.20.4-vs2.2.0-rc20/arch/x86_64/ia32/syscall32.c
+--- linux-2.6.20.4/arch/x86_64/ia32/syscall32.c 2007-02-06 03:00:21 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/x86_64/ia32/syscall32.c 2007-02-06 03:05:21 +0100
+@@ -10,6 +10,7 @@
+ #include <linux/init.h>
+ #include <linux/stringify.h>
+ #include <linux/security.h>
++#include <linux/vs_memory.h>
+ #include <asm/proto.h>
+ #include <asm/tlbflush.h>
+ #include <asm/ia32_unistd.h>
+@@ -77,7 +78,7 @@ int syscall32_setup_pages(struct linux_b
+ kmem_cache_free(vm_area_cachep, vma);
+ return ret;
+ }
+- mm->total_vm += npages;
++ vx_vmpages_add(mm, npages);
+ up_write(&mm->mmap_sem);
+ return 0;
+ }
+diff -NurpP --minimal linux-2.6.20.4/arch/x86_64/kernel/process.c linux-2.6.20.4-vs2.2.0-rc20/arch/x86_64/kernel/process.c
+--- linux-2.6.20.4/arch/x86_64/kernel/process.c 2007-02-06 03:00:22 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/x86_64/kernel/process.c 2007-02-06 03:05:22 +0100
+@@ -54,7 +54,8 @@
+
+ asmlinkage extern void ret_from_fork(void);
+
+-unsigned long kernel_thread_flags = CLONE_VM | CLONE_UNTRACED;
++unsigned long kernel_thread_flags =
++ CLONE_VM | CLONE_UNTRACED | CLONE_KTHREAD;
+
+ unsigned long boot_option_idle_override = 0;
+ EXPORT_SYMBOL(boot_option_idle_override);
+@@ -308,8 +309,8 @@ void __show_regs(struct pt_regs * regs)
+
+ printk("\n");
+ print_modules();
+- printk("Pid: %d, comm: %.20s %s %s %.*s\n",
+- current->pid, current->comm, print_tainted(),
++ printk("Pid: %d:#%u, comm: %.20s %s %s %.*s\n",
++ current->pid, current->xid, current->comm, print_tainted(),
+ init_utsname()->release,
+ (int)strcspn(init_utsname()->version, " "),
+ init_utsname()->version);
+diff -NurpP --minimal linux-2.6.20.4/arch/x86_64/kernel/traps.c linux-2.6.20.4-vs2.2.0-rc20/arch/x86_64/kernel/traps.c
+--- linux-2.6.20.4/arch/x86_64/kernel/traps.c 2007-02-06 03:00:22 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/x86_64/kernel/traps.c 2007-02-06 03:05:22 +0100
+@@ -430,8 +430,9 @@ void show_registers(struct pt_regs *regs
+
+ printk("CPU %d ", cpu);
+ __show_regs(regs);
+- printk("Process %s (pid: %d, threadinfo %p, task %p)\n",
+- cur->comm, cur->pid, task_thread_info(cur), cur);
++ printk("Process %s (pid: %d[#%u], threadinfo %p, task %p)\n",
++ cur->comm, cur->pid, cur->xid,
++ task_thread_info(cur), cur);
+
+ /*
+ * When in-kernel, we also print out the stack and code at the
+@@ -587,8 +588,8 @@ static void __kprobes do_trap(int trapnr
+ if (user_mode(regs)) {
+ if (exception_trace && unhandled_signal(tsk, signr))
+ printk(KERN_INFO
+- "%s[%d] trap %s rip:%lx rsp:%lx error:%lx\n",
+- tsk->comm, tsk->pid, str,
++ "%s[%d:#%u] trap %s rip:%lx rsp:%lx error:%lx\n",
++ tsk->comm, tsk->pid, tsk->xid, str,
+ regs->rip, regs->rsp, error_code);
+
+ if (info)
+@@ -688,8 +689,8 @@ asmlinkage void __kprobes do_general_pro
+ if (user_mode(regs)) {
+ if (exception_trace && unhandled_signal(tsk, SIGSEGV))
+ printk(KERN_INFO
+- "%s[%d] general protection rip:%lx rsp:%lx error:%lx\n",
+- tsk->comm, tsk->pid,
++ "%s[%d:#%u] general protection rip:%lx rsp:%lx error:%lx\n",
++ tsk->comm, tsk->pid, tsk->xid,
+ regs->rip, regs->rsp, error_code);
+
+ force_sig(SIGSEGV, tsk);
+diff -NurpP --minimal linux-2.6.20.4/arch/x86_64/mm/fault.c linux-2.6.20.4-vs2.2.0-rc20/arch/x86_64/mm/fault.c
+--- linux-2.6.20.4/arch/x86_64/mm/fault.c 2007-02-06 03:00:22 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/arch/x86_64/mm/fault.c 2007-03-10 18:02:51 +0100
+@@ -514,10 +514,10 @@ bad_area_nosemaphore:
+
+ if (exception_trace && unhandled_signal(tsk, SIGSEGV)) {
+ printk(
+- "%s%s[%d]: segfault at %016lx rip %016lx rsp %016lx error %lx\n",
++ "%s%s[%d:#%u]: segfault at %016lx rip %016lx rsp %016lx error %lx\n",
+ tsk->pid > 1 ? KERN_INFO : KERN_EMERG,
+- tsk->comm, tsk->pid, address, regs->rip,
+- regs->rsp, error_code);
++ tsk->comm, tsk->pid, tsk->xid, address,
++ regs->rip, regs->rsp, error_code);
+ }
+
+ tsk->thread.cr2 = address;
+@@ -584,7 +584,8 @@ out_of_memory:
+ yield();
+ goto again;
+ }
+- printk("VM: killing process %s\n", tsk->comm);
++ printk("VM: killing process %s(%d:#%u)\n",
++ tsk->comm, tsk->pid, tsk->xid);
+ if (error_code & 4)
+ do_exit(SIGKILL);
+ goto no_context;
+diff -NurpP --minimal linux-2.6.20.4/block/cfq-iosched.c linux-2.6.20.4-vs2.2.0-rc20/block/cfq-iosched.c
+--- linux-2.6.20.4/block/cfq-iosched.c 2007-02-06 03:00:22 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/block/cfq-iosched.c 2007-02-06 03:11:09 +0100
+@@ -221,6 +221,8 @@ static int cfq_queue_empty(request_queue
+
+ static inline pid_t cfq_queue_pid(struct task_struct *task, int rw, int is_sync)
+ {
++ if (task->xid)
++ return task->xid + (1 << 16);
+ /*
+ * Use the per-process queue, for read requests and syncronous writes
+ */
+diff -NurpP --minimal linux-2.6.20.4/drivers/block/Kconfig linux-2.6.20.4-vs2.2.0-rc20/drivers/block/Kconfig
+--- linux-2.6.20.4/drivers/block/Kconfig 2007-02-06 03:00:26 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/drivers/block/Kconfig 2007-02-06 03:05:22 +0100
+@@ -311,6 +311,13 @@ config BLK_DEV_CRYPTOLOOP
+ instead, which can be configured to be on-disk compatible with the
+ cryptoloop device.
+
++config BLK_DEV_VROOT
++ tristate "Virtual Root device support"
++ depends on QUOTACTL
++ ---help---
++ Saying Y here will allow you to use quota/fs ioctls on a shared
++ partition within a virtual server without compromising security.
++
+ config BLK_DEV_NBD
+ tristate "Network block device support"
+ depends on NET
+diff -NurpP --minimal linux-2.6.20.4/drivers/block/Makefile linux-2.6.20.4-vs2.2.0-rc20/drivers/block/Makefile
+--- linux-2.6.20.4/drivers/block/Makefile 2007-02-06 03:00:26 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/drivers/block/Makefile 2007-02-06 03:05:22 +0100
+@@ -28,4 +28,5 @@ obj-$(CONFIG_BLK_DEV_CRYPTOLOOP) += cryp
+ obj-$(CONFIG_VIODASD) += viodasd.o
+ obj-$(CONFIG_BLK_DEV_SX8) += sx8.o
+ obj-$(CONFIG_BLK_DEV_UB) += ub.o
++obj-$(CONFIG_BLK_DEV_VROOT) += vroot.o
+
+diff -NurpP --minimal linux-2.6.20.4/drivers/block/loop.c linux-2.6.20.4-vs2.2.0-rc20/drivers/block/loop.c
+--- linux-2.6.20.4/drivers/block/loop.c 2007-02-06 03:00:26 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/drivers/block/loop.c 2007-02-15 00:06:27 +0100
+@@ -74,6 +74,7 @@
+ #include <linux/highmem.h>
+ #include <linux/gfp.h>
+ #include <linux/kthread.h>
++#include <linux/vs_context.h>
+
+ #include <asm/uaccess.h>
+
+@@ -795,6 +796,7 @@ static int loop_set_fd(struct loop_devic
+ lo->lo_blocksize = lo_blocksize;
+ lo->lo_device = bdev;
+ lo->lo_flags = lo_flags;
++ lo->lo_xid = vx_current_xid();
+ lo->lo_backing_file = file;
+ lo->transfer = transfer_none;
+ lo->ioctl = NULL;
+@@ -935,7 +937,7 @@ loop_set_status(struct loop_device *lo,
+ struct loop_func_table *xfer;
+
+ if (lo->lo_encrypt_key_size && lo->lo_key_owner != current->uid &&
+- !capable(CAP_SYS_ADMIN))
++ !vx_capable(CAP_SYS_ADMIN, VXC_ADMIN_CLOOP))
+ return -EPERM;
+ if (lo->lo_state != Lo_bound)
+ return -ENXIO;
+@@ -1015,7 +1017,8 @@ loop_get_status(struct loop_device *lo,
+ memcpy(info->lo_crypt_name, lo->lo_crypt_name, LO_NAME_SIZE);
+ info->lo_encrypt_type =
+ lo->lo_encryption ? lo->lo_encryption->number : 0;
+- if (lo->lo_encrypt_key_size && capable(CAP_SYS_ADMIN)) {
++ if (lo->lo_encrypt_key_size &&
++ vx_capable(CAP_SYS_ADMIN, VXC_ADMIN_CLOOP)) {
+ info->lo_encrypt_key_size = lo->lo_encrypt_key_size;
+ memcpy(info->lo_encrypt_key, lo->lo_encrypt_key,
+ lo->lo_encrypt_key_size);
+@@ -1326,6 +1329,9 @@ static int lo_open(struct inode *inode,
+ {
+ struct loop_device *lo = inode->i_bdev->bd_disk->private_data;
+
++ if (!vx_check(lo->lo_xid, VS_IDENT|VS_HOSTID))
++ return -EACCES;
++
+ mutex_lock(&lo->lo_ctl_mutex);
+ lo->lo_refcnt++;
+ mutex_unlock(&lo->lo_ctl_mutex);
+diff -NurpP --minimal linux-2.6.20.4/drivers/block/vroot.c linux-2.6.20.4-vs2.2.0-rc20/drivers/block/vroot.c
+--- linux-2.6.20.4/drivers/block/vroot.c 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/drivers/block/vroot.c 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,281 @@
++/*
++ * linux/drivers/block/vroot.c
++ *
++ * written by Herbert Ptzl, 9/11/2002
++ * ported to 2.6.10 by Herbert Ptzl, 30/12/2004
++ *
++ * based on the loop.c code by Theodore Ts'o.
++ *
++ * Copyright (C) 2002-2006 by Herbert Ptzl.
++ * Redistribution of this file is permitted under the
++ * GNU General Public License.
++ *
++ */
++
++#include <linux/module.h>
++#include <linux/moduleparam.h>
++#include <linux/file.h>
++#include <linux/major.h>
++#include <linux/blkdev.h>
++
++#include <linux/vroot.h>
++#include <linux/vs_context.h>
++
++
++static int max_vroot = 8;
++
++static struct vroot_device *vroot_dev;
++static struct gendisk **disks;
++
++
++static int vroot_set_dev(
++ struct vroot_device *vr,
++ struct file *vr_file,
++ struct block_device *bdev,
++ unsigned int arg)
++{
++ struct block_device *real_bdev;
++ struct file *file;
++ struct inode *inode;
++ int error;
++
++ error = -EBUSY;
++ if (vr->vr_state != Vr_unbound)
++ goto out;
++
++ error = -EBADF;
++ file = fget(arg);
++ if (!file)
++ goto out;
++
++ error = -EINVAL;
++ inode = file->f_dentry->d_inode;
++
++
++ if (S_ISBLK(inode->i_mode)) {
++ real_bdev = inode->i_bdev;
++ vr->vr_device = real_bdev;
++ __iget(real_bdev->bd_inode);
++ } else
++ goto out_fput;
++
++ vxdprintk(VXD_CBIT(misc, 0),
++ "vroot[%d]_set_dev: dev=" VXF_DEV,
++ vr->vr_number, VXD_DEV(real_bdev));
++
++ vr->vr_state = Vr_bound;
++ error = 0;
++
++ out_fput:
++ fput(file);
++ out:
++ return error;
++}
++
++static int vroot_clr_dev(
++ struct vroot_device *vr,
++ struct file *vr_file,
++ struct block_device *bdev)
++{
++ struct block_device *real_bdev;
++
++ if (vr->vr_state != Vr_bound)
++ return -ENXIO;
++ if (vr->vr_refcnt > 1) /* we needed one fd for the ioctl */
++ return -EBUSY;
++
++ real_bdev = vr->vr_device;
++
++ vxdprintk(VXD_CBIT(misc, 0),
++ "vroot[%d]_clr_dev: dev=" VXF_DEV,
++ vr->vr_number, VXD_DEV(real_bdev));
++
++ bdput(real_bdev);
++ vr->vr_state = Vr_unbound;
++ vr->vr_device = NULL;
++ return 0;
++}
++
++
++static int vr_ioctl(struct inode * inode, struct file * file,
++ unsigned int cmd, unsigned long arg)
++{
++ struct vroot_device *vr = inode->i_bdev->bd_disk->private_data;
++ int err;
++
++ down(&vr->vr_ctl_mutex);
++ switch (cmd) {
++ case VROOT_SET_DEV:
++ err = vroot_set_dev(vr, file, inode->i_bdev, arg);
++ break;
++ case VROOT_CLR_DEV:
++ err = vroot_clr_dev(vr, file, inode->i_bdev);
++ break;
++ default:
++ err = -EINVAL;
++ break;
++ }
++ up(&vr->vr_ctl_mutex);
++ return err;
++}
++
++static int vr_open(struct inode *inode, struct file *file)
++{
++ struct vroot_device *vr = inode->i_bdev->bd_disk->private_data;
++
++ down(&vr->vr_ctl_mutex);
++ vr->vr_refcnt++;
++ up(&vr->vr_ctl_mutex);
++ return 0;
++}
++
++static int vr_release(struct inode *inode, struct file *file)
++{
++ struct vroot_device *vr = inode->i_bdev->bd_disk->private_data;
++
++ down(&vr->vr_ctl_mutex);
++ --vr->vr_refcnt;
++ up(&vr->vr_ctl_mutex);
++ return 0;
++}
++
++static struct block_device_operations vr_fops = {
++ .owner = THIS_MODULE,
++ .open = vr_open,
++ .release = vr_release,
++ .ioctl = vr_ioctl,
++};
++
++struct block_device *__vroot_get_real_bdev(struct block_device *bdev)
++{
++ struct inode *inode = bdev->bd_inode;
++ struct vroot_device *vr;
++ struct block_device *real_bdev;
++ int minor = iminor(inode);
++
++ vr = &vroot_dev[minor];
++ real_bdev = vr->vr_device;
++
++ vxdprintk(VXD_CBIT(misc, 0),
++ "vroot[%d]_get_real_bdev: dev=" VXF_DEV,
++ vr->vr_number, VXD_DEV(real_bdev));
++
++ if (vr->vr_state != Vr_bound)
++ return ERR_PTR(-ENXIO);
++
++ __iget(real_bdev->bd_inode);
++ return real_bdev;
++}
++
++/*
++ * And now the modules code and kernel interface.
++ */
++
++module_param(max_vroot, int, 0);
++
++MODULE_PARM_DESC(max_vroot, "Maximum number of vroot devices (1-256)");
++MODULE_LICENSE("GPL");
++MODULE_ALIAS_BLOCKDEV_MAJOR(VROOT_MAJOR);
++
++MODULE_AUTHOR ("Herbert Ptzl");
++MODULE_DESCRIPTION ("Virtual Root Device Mapper");
++
++
++int __init vroot_init(void)
++{
++ int err, i;
++
++ if (max_vroot < 1 || max_vroot > 256) {
++ max_vroot = MAX_VROOT_DEFAULT;
++ printk(KERN_WARNING "vroot: invalid max_vroot "
++ "(must be between 1 and 256), "
++ "using default (%d)\n", max_vroot);
++ }
++
++ if (register_blkdev(VROOT_MAJOR, "vroot"))
++ return -EIO;
++
++ err = -ENOMEM;
++ vroot_dev = kmalloc(max_vroot * sizeof(struct vroot_device), GFP_KERNEL);
++ if (!vroot_dev)
++ goto out_mem1;
++ memset(vroot_dev, 0, max_vroot * sizeof(struct vroot_device));
++
++ disks = kmalloc(max_vroot * sizeof(struct gendisk *), GFP_KERNEL);
++ if (!disks)
++ goto out_mem2;
++
++ for (i = 0; i < max_vroot; i++) {
++ disks[i] = alloc_disk(1);
++ if (!disks[i])
++ goto out_mem3;
++ }
++
++ for (i = 0; i < max_vroot; i++) {
++ struct vroot_device *vr = &vroot_dev[i];
++ struct gendisk *disk = disks[i];
++
++ memset(vr, 0, sizeof(*vr));
++ init_MUTEX(&vr->vr_ctl_mutex);
++ vr->vr_number = i;
++ disk->major = VROOT_MAJOR;
++ disk->first_minor = i;
++ disk->fops = &vr_fops;
++ sprintf(disk->disk_name, "vroot%d", i);
++ disk->private_data = vr;
++ }
++
++ err = register_vroot_grb(&__vroot_get_real_bdev);
++ if (err)
++ goto out_mem3;
++
++ for (i = 0; i < max_vroot; i++)
++ add_disk(disks[i]);
++ printk(KERN_INFO "vroot: loaded (max %d devices)\n", max_vroot);
++ return 0;
++
++out_mem3:
++ while (i--)
++ put_disk(disks[i]);
++ kfree(disks);
++out_mem2:
++ kfree(vroot_dev);
++out_mem1:
++ unregister_blkdev(VROOT_MAJOR, "vroot");
++ printk(KERN_ERR "vroot: ran out of memory\n");
++ return err;
++}
++
++void vroot_exit(void)
++{
++ int i;
++
++ if (unregister_vroot_grb(&__vroot_get_real_bdev))
++ printk(KERN_WARNING "vroot: cannot unregister grb\n");
++
++ for (i = 0; i < max_vroot; i++) {
++ del_gendisk(disks[i]);
++ put_disk(disks[i]);
++ }
++ if (unregister_blkdev(VROOT_MAJOR, "vroot"))
++ printk(KERN_WARNING "vroot: cannot unregister blkdev\n");
++
++ kfree(disks);
++ kfree(vroot_dev);
++}
++
++module_init(vroot_init);
++module_exit(vroot_exit);
++
++#ifndef MODULE
++
++static int __init max_vroot_setup(char *str)
++{
++ max_vroot = simple_strtol(str, NULL, 0);
++ return 1;
++}
++
++__setup("max_vroot=", max_vroot_setup);
++
++#endif
++
+diff -NurpP --minimal linux-2.6.20.4/drivers/char/sysrq.c linux-2.6.20.4-vs2.2.0-rc20/drivers/char/sysrq.c
+--- linux-2.6.20.4/drivers/char/sysrq.c 2007-02-06 03:00:34 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/drivers/char/sysrq.c 2007-02-06 03:12:21 +0100
+@@ -36,6 +36,7 @@
+ #include <linux/workqueue.h>
+ #include <linux/kexec.h>
+ #include <linux/irq.h>
++#include <linux/vserver/debug.h>
+
+ #include <asm/ptrace.h>
+ #include <asm/irq_regs.h>
+@@ -299,6 +300,21 @@ static struct sysrq_key_op sysrq_unrt_op
+ .enable_mask = SYSRQ_ENABLE_RTNICE,
+ };
+
++
++#ifdef CONFIG_VSERVER_DEBUG
++static void sysrq_handle_vxinfo(int key, struct tty_struct *tty)
++{
++ dump_vx_info_inactive((key == 'x')?0:1);
++}
++
++static struct sysrq_key_op sysrq_showvxinfo_op = {
++ .handler = sysrq_handle_vxinfo,
++ .help_msg = "conteXt",
++ .action_msg = "Show Context Info",
++ .enable_mask = SYSRQ_ENABLE_DUMP,
++};
++#endif
++
+ /* Key Operations table and lock */
+ static DEFINE_SPINLOCK(sysrq_key_table_lock);
+
+@@ -347,7 +363,11 @@ static struct sysrq_key_op *sysrq_key_ta
+ /* x: May be registered on ppc/powerpc for xmon */
+ NULL, /* x */
+ NULL, /* y */
+- NULL /* z */
++#ifdef CONFIG_VSERVER_DEBUG
++ &sysrq_showvxinfo_op, /* z */
++#else
++ NULL, /* z */
++#endif
+ };
+
+ /* key2index calculation, -1 on invalid index */
+@@ -359,6 +379,8 @@ static int sysrq_key_table_key2index(int
+ retval = key - '0';
+ else if ((key >= 'a') && (key <= 'z'))
+ retval = key + 10 - 'a';
++ else if ((key >= 'A') && (key <= 'Z'))
++ retval = key + 10 - 'A';
+ else
+ retval = -1;
+ return retval;
+diff -NurpP --minimal linux-2.6.20.4/drivers/char/tty_io.c linux-2.6.20.4-vs2.2.0-rc20/drivers/char/tty_io.c
+--- linux-2.6.20.4/drivers/char/tty_io.c 2007-03-10 20:33:59 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/drivers/char/tty_io.c 2007-03-10 18:57:30 +0100
+@@ -103,6 +103,7 @@
+ #include <linux/selection.h>
+
+ #include <linux/kmod.h>
++#include <linux/vs_pid.h>
+
+ #undef TTY_DEBUG_HANGUP
+
+@@ -2978,13 +2979,16 @@ unlock:
+
+ static int tiocgpgrp(struct tty_struct *tty, struct tty_struct *real_tty, pid_t __user *p)
+ {
++ pid_t pgrp;
+ /*
+ * (tty == real_tty) is a cheap way of
+ * testing if the tty is NOT a master pty.
+ */
+ if (tty == real_tty && current->signal->tty != real_tty)
+ return -ENOTTY;
+- return put_user(real_tty->pgrp, p);
++
++ pgrp = vx_map_pid(real_tty->pgrp);
++ return put_user(pgrp, p);
+ }
+
+ /**
+@@ -3014,6 +3018,8 @@ static int tiocspgrp(struct tty_struct *
+ return -ENOTTY;
+ if (get_user(pgrp, p))
+ return -EFAULT;
++
++ pgrp = vx_rmap_pid(pgrp);
+ if (pgrp < 0)
+ return -EINVAL;
+ if (session_of_pgrp(pgrp) != process_session(current))
+diff -NurpP --minimal linux-2.6.20.4/drivers/infiniband/core/uverbs_mem.c linux-2.6.20.4-vs2.2.0-rc20/drivers/infiniband/core/uverbs_mem.c
+--- linux-2.6.20.4/drivers/infiniband/core/uverbs_mem.c 2007-02-06 03:00:37 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/drivers/infiniband/core/uverbs_mem.c 2007-02-06 03:05:22 +0100
+@@ -36,6 +36,7 @@
+
+ #include <linux/mm.h>
+ #include <linux/dma-mapping.h>
++#include <linux/vs_memory.h>
+
+ #include "uverbs.h"
+
+@@ -161,7 +162,7 @@ out:
+ if (ret < 0)
+ __ib_umem_release(dev, mem, 0);
+ else
+- current->mm->locked_vm = locked;
++ vx_vmlocked_sub(current->mm, current->mm->locked_vm - locked);
+
+ up_write(&current->mm->mmap_sem);
+ free_page((unsigned long) page_list);
+@@ -174,8 +175,8 @@ void ib_umem_release(struct ib_device *d
+ __ib_umem_release(dev, umem, 1);
+
+ down_write(&current->mm->mmap_sem);
+- current->mm->locked_vm -=
+- PAGE_ALIGN(umem->length + umem->offset) >> PAGE_SHIFT;
++ vx_vmlocked_sub(current->mm,
++ PAGE_ALIGN(umem->length + umem->offset) >> PAGE_SHIFT);
+ up_write(&current->mm->mmap_sem);
+ }
+
+@@ -185,7 +186,7 @@ static void ib_umem_account(struct work_
+ container_of(_work, struct ib_umem_account_work, work);
+
+ down_write(&work->mm->mmap_sem);
+- work->mm->locked_vm -= work->diff;
++ vx_vmlocked_sub(work->mm, work->diff);
+ up_write(&work->mm->mmap_sem);
+ mmput(work->mm);
+ kfree(work);
+diff -NurpP --minimal linux-2.6.20.4/drivers/infiniband/hw/ipath/ipath_user_pages.c linux-2.6.20.4-vs2.2.0-rc20/drivers/infiniband/hw/ipath/ipath_user_pages.c
+--- linux-2.6.20.4/drivers/infiniband/hw/ipath/ipath_user_pages.c 2007-02-06 03:00:37 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/drivers/infiniband/hw/ipath/ipath_user_pages.c 2007-02-06 03:05:22 +0100
+@@ -33,6 +33,7 @@
+
+ #include <linux/mm.h>
+ #include <linux/device.h>
++#include <linux/vs_memory.h>
+
+ #include "ipath_kernel.h"
+
+@@ -61,7 +62,8 @@ static int __get_user_pages(unsigned lon
+ lock_limit = current->signal->rlim[RLIMIT_MEMLOCK].rlim_cur >>
+ PAGE_SHIFT;
+
+- if (num_pages > lock_limit) {
++ if (num_pages > lock_limit ||
++ !vx_vmlocked_avail(current->mm, num_pages)) {
+ ret = -ENOMEM;
+ goto bail;
+ }
+@@ -78,7 +80,7 @@ static int __get_user_pages(unsigned lon
+ goto bail_release;
+ }
+
+- current->mm->locked_vm += num_pages;
++ vx_vmlocked_add(current->mm, num_pages);
+
+ ret = 0;
+ goto bail;
+@@ -203,7 +205,7 @@ void ipath_release_user_pages(struct pag
+
+ __ipath_release_user_pages(p, num_pages, 1);
+
+- current->mm->locked_vm -= num_pages;
++ vx_vmlocked_sub(current->mm, num_pages);
+
+ up_write(&current->mm->mmap_sem);
+ }
+@@ -220,7 +222,7 @@ static void user_pages_account(struct wo
+ container_of(_work, struct ipath_user_pages_work, work);
+
+ down_write(&work->mm->mmap_sem);
+- work->mm->locked_vm -= work->num_pages;
++ vx_vmlocked_sub(work->mm, work->num_pages);
+ up_write(&work->mm->mmap_sem);
+ mmput(work->mm);
+ kfree(work);
+diff -NurpP --minimal linux-2.6.20.4/drivers/md/dm-ioctl.c linux-2.6.20.4-vs2.2.0-rc20/drivers/md/dm-ioctl.c
+--- linux-2.6.20.4/drivers/md/dm-ioctl.c 2007-02-06 03:00:41 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/drivers/md/dm-ioctl.c 2007-02-06 03:05:22 +0100
+@@ -15,6 +15,7 @@
+ #include <linux/slab.h>
+ #include <linux/dm-ioctl.h>
+ #include <linux/hdreg.h>
++#include <linux/vs_context.h>
+
+ #include <asm/uaccess.h>
+
+@@ -100,7 +101,8 @@ static struct hash_cell *__get_name_cell
+ unsigned int h = hash_str(str);
+
+ list_for_each_entry (hc, _name_buckets + h, name_list)
+- if (!strcmp(hc->name, str)) {
++ if (vx_check(dm_get_xid(hc->md), VS_WATCH_P|VS_IDENT) &&
++ !strcmp(hc->name, str)) {
+ dm_get(hc->md);
+ return hc;
+ }
+@@ -114,7 +116,8 @@ static struct hash_cell *__get_uuid_cell
+ unsigned int h = hash_str(str);
+
+ list_for_each_entry (hc, _uuid_buckets + h, uuid_list)
+- if (!strcmp(hc->uuid, str)) {
++ if (vx_check(dm_get_xid(hc->md), VS_WATCH_P|VS_IDENT) &&
++ !strcmp(hc->uuid, str)) {
+ dm_get(hc->md);
+ return hc;
+ }
+@@ -349,6 +352,9 @@ typedef int (*ioctl_fn)(struct dm_ioctl
+
+ static int remove_all(struct dm_ioctl *param, size_t param_size)
+ {
++ if (!vx_check(0, VS_ADMIN))
++ return -EPERM;
++
+ dm_hash_remove_all(1);
+ param->data_size = 0;
+ return 0;
+@@ -396,6 +402,8 @@ static int list_devices(struct dm_ioctl
+ */
+ for (i = 0; i < NUM_BUCKETS; i++) {
+ list_for_each_entry (hc, _name_buckets + i, name_list) {
++ if (!vx_check(dm_get_xid(hc->md), VS_WATCH_P|VS_IDENT))
++ continue;
+ needed += sizeof(struct dm_name_list);
+ needed += strlen(hc->name) + 1;
+ needed += ALIGN_MASK;
+@@ -419,6 +427,8 @@ static int list_devices(struct dm_ioctl
+ */
+ for (i = 0; i < NUM_BUCKETS; i++) {
+ list_for_each_entry (hc, _name_buckets + i, name_list) {
++ if (!vx_check(dm_get_xid(hc->md), VS_WATCH_P|VS_IDENT))
++ continue;
+ if (old_nl)
+ old_nl->next = (uint32_t) ((void *) nl -
+ (void *) old_nl);
+@@ -609,10 +619,11 @@ static struct hash_cell *__find_device_h
+ if (!md)
+ goto out;
+
+- mdptr = dm_get_mdptr(md);
++ if (vx_check(dm_get_xid(md), VS_WATCH_P|VS_IDENT))
++ mdptr = dm_get_mdptr(md);
++
+ if (!mdptr)
+ dm_put(md);
+-
+ out:
+ return mdptr;
+ }
+@@ -1409,8 +1420,8 @@ static int ctl_ioctl(struct inode *inode
+ ioctl_fn fn = NULL;
+ size_t param_size;
+
+- /* only root can play with this */
+- if (!capable(CAP_SYS_ADMIN))
++ /* only root and certain contexts can play with this */
++ if (!vx_capable(CAP_SYS_ADMIN, VXC_ADMIN_MAPPER))
+ return -EACCES;
+
+ if (_IOC_TYPE(command) != DM_IOCTL)
+diff -NurpP --minimal linux-2.6.20.4/drivers/md/dm.c linux-2.6.20.4-vs2.2.0-rc20/drivers/md/dm.c
+--- linux-2.6.20.4/drivers/md/dm.c 2007-02-06 03:00:41 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/drivers/md/dm.c 2007-02-15 00:06:27 +0100
+@@ -21,6 +21,7 @@
+ #include <linux/hdreg.h>
+ #include <linux/blktrace_api.h>
+ #include <linux/smp_lock.h>
++#include <linux/vs_base.h>
+
+ #define DM_MSG_PREFIX "core"
+
+@@ -77,6 +78,7 @@ struct mapped_device {
+ rwlock_t map_lock;
+ atomic_t holders;
+ atomic_t open_count;
++ xid_t xid;
+
+ unsigned long flags;
+
+@@ -223,6 +225,7 @@ static void __exit dm_exit(void)
+ static int dm_blk_open(struct inode *inode, struct file *file)
+ {
+ struct mapped_device *md;
++ int ret = -ENXIO;
+
+ spin_lock(&_minor_lock);
+
+@@ -231,18 +234,19 @@ static int dm_blk_open(struct inode *ino
+ goto out;
+
+ if (test_bit(DMF_FREEING, &md->flags) ||
+- test_bit(DMF_DELETING, &md->flags)) {
+- md = NULL;
++ test_bit(DMF_DELETING, &md->flags))
++ goto out;
++
++ ret = -EACCES;
++ if (!vx_check(md->xid, VS_IDENT|VS_HOSTID))
+ goto out;
+- }
+
+ dm_get(md);
+ atomic_inc(&md->open_count);
+-
++ ret = 0;
+ out:
+ spin_unlock(&_minor_lock);
+-
+- return md ? 0 : -ENXIO;
++ return ret;
+ }
+
+ static int dm_blk_close(struct inode *inode, struct file *file)
+@@ -438,6 +442,14 @@ int dm_set_geometry(struct mapped_device
+ return 0;
+ }
+
++/*
++ * Get the xid associated with a dm device
++ */
++xid_t dm_get_xid(struct mapped_device *md)
++{
++ return md->xid;
++}
++
+ /*-----------------------------------------------------------------
+ * CRUD START:
+ * A more elegant soln is in the works that uses the queue
+@@ -991,6 +1003,7 @@ static struct mapped_device *alloc_dev(i
+ atomic_set(&md->holders, 1);
+ atomic_set(&md->open_count, 0);
+ atomic_set(&md->event_nr, 0);
++ md->xid = vx_current_xid();
+
+ md->queue = blk_alloc_queue(GFP_KERNEL);
+ if (!md->queue)
+diff -NurpP --minimal linux-2.6.20.4/drivers/md/dm.h linux-2.6.20.4-vs2.2.0-rc20/drivers/md/dm.h
+--- linux-2.6.20.4/drivers/md/dm.h 2007-02-06 03:00:41 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/drivers/md/dm.h 2007-02-06 03:05:22 +0100
+@@ -91,6 +91,8 @@ void dm_put_target_type(struct target_ty
+ int dm_target_iterate(void (*iter_func)(struct target_type *tt,
+ void *param), void *param);
+
++xid_t dm_get_xid(struct mapped_device *md);
++
+ /*-----------------------------------------------------------------
+ * Useful inlines.
+ *---------------------------------------------------------------*/
+diff -NurpP --minimal linux-2.6.20.4/fs/attr.c linux-2.6.20.4-vs2.2.0-rc20/fs/attr.c
+--- linux-2.6.20.4/fs/attr.c 2006-04-09 13:49:53 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/attr.c 2007-02-06 03:05:22 +0100
+@@ -15,6 +15,9 @@
+ #include <linux/fcntl.h>
+ #include <linux/quotaops.h>
+ #include <linux/security.h>
++#include <linux/proc_fs.h>
++#include <linux/devpts_fs.h>
++#include <linux/vs_base.h>
+
+ /* Taken over from the old code... */
+
+@@ -56,6 +59,30 @@ int inode_change_ok(struct inode *inode,
+ if (current->fsuid != inode->i_uid && !capable(CAP_FOWNER))
+ goto error;
+ }
++
++ /* Check for evil vserver activity */
++ if (vx_check(0, VS_ADMIN))
++ goto fine;
++
++ if (IS_BARRIER(inode)) {
++ vxwprintk(1, "xid=%d messing with the barrier.",
++ vx_current_xid());
++ goto error;
++ }
++ switch (inode->i_sb->s_magic) {
++ case PROC_SUPER_MAGIC:
++ /* maybe allow that in the future? */
++ vxwprintk(1, "xid=%d messing with the procfs.",
++ vx_current_xid());
++ goto error;
++ case DEVPTS_SUPER_MAGIC:
++ /* devpts is xid tagged */
++ if (vx_check((xid_t)inode->i_tag, VS_IDENT))
++ goto fine;
++ vxwprintk(1, "xid=%d messing with the devpts.",
++ vx_current_xid());
++ goto error;
++ }
+ fine:
+ retval = 0;
+ error:
+@@ -79,6 +106,8 @@ int inode_setattr(struct inode * inode,
+ inode->i_uid = attr->ia_uid;
+ if (ia_valid & ATTR_GID)
+ inode->i_gid = attr->ia_gid;
++ if ((ia_valid & ATTR_TAG) && IS_TAGGED(inode))
++ inode->i_tag = attr->ia_tag;
+ if (ia_valid & ATTR_ATIME)
+ inode->i_atime = timespec_trunc(attr->ia_atime,
+ inode->i_sb->s_time_gran);
+@@ -153,7 +182,8 @@ int notify_change(struct dentry * dentry
+ error = security_inode_setattr(dentry, attr);
+ if (!error) {
+ if ((ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid) ||
+- (ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid))
++ (ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid) ||
++ (ia_valid & ATTR_TAG && attr->ia_tag != inode->i_tag))
+ error = DQUOT_TRANSFER(inode, attr) ? -EDQUOT : 0;
+ if (!error)
+ error = inode_setattr(inode, attr);
+diff -NurpP --minimal linux-2.6.20.4/fs/binfmt_aout.c linux-2.6.20.4-vs2.2.0-rc20/fs/binfmt_aout.c
+--- linux-2.6.20.4/fs/binfmt_aout.c 2007-02-06 03:01:16 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/binfmt_aout.c 2007-02-06 03:05:22 +0100
+@@ -24,6 +24,7 @@
+ #include <linux/binfmts.h>
+ #include <linux/personality.h>
+ #include <linux/init.h>
++#include <linux/vs_memory.h>
+
+ #include <asm/system.h>
+ #include <asm/uaccess.h>
+diff -NurpP --minimal linux-2.6.20.4/fs/binfmt_elf.c linux-2.6.20.4-vs2.2.0-rc20/fs/binfmt_elf.c
+--- linux-2.6.20.4/fs/binfmt_elf.c 2007-03-10 20:34:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/binfmt_elf.c 2007-03-10 18:57:30 +0100
+@@ -39,6 +39,7 @@
+ #include <linux/syscalls.h>
+ #include <linux/random.h>
+ #include <linux/elf.h>
++#include <linux/vs_memory.h>
+ #include <asm/uaccess.h>
+ #include <asm/param.h>
+ #include <asm/page.h>
+diff -NurpP --minimal linux-2.6.20.4/fs/binfmt_flat.c linux-2.6.20.4-vs2.2.0-rc20/fs/binfmt_flat.c
+--- linux-2.6.20.4/fs/binfmt_flat.c 2007-02-06 03:01:16 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/binfmt_flat.c 2007-02-06 03:05:22 +0100
+@@ -36,6 +36,7 @@
+ #include <linux/init.h>
+ #include <linux/flat.h>
+ #include <linux/syscalls.h>
++#include <linux/vs_memory.h>
+
+ #include <asm/byteorder.h>
+ #include <asm/system.h>
+diff -NurpP --minimal linux-2.6.20.4/fs/binfmt_som.c linux-2.6.20.4-vs2.2.0-rc20/fs/binfmt_som.c
+--- linux-2.6.20.4/fs/binfmt_som.c 2006-11-30 21:19:19 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/binfmt_som.c 2007-02-06 03:05:22 +0100
+@@ -28,6 +28,7 @@
+ #include <linux/shm.h>
+ #include <linux/personality.h>
+ #include <linux/init.h>
++#include <linux/vs_memory.h>
+
+ #include <asm/a.out.h>
+ #include <asm/uaccess.h>
+diff -NurpP --minimal linux-2.6.20.4/fs/dcache.c linux-2.6.20.4-vs2.2.0-rc20/fs/dcache.c
+--- linux-2.6.20.4/fs/dcache.c 2007-02-06 03:01:17 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/dcache.c 2007-02-06 03:05:22 +0100
+@@ -32,6 +32,7 @@
+ #include <linux/seqlock.h>
+ #include <linux/swap.h>
+ #include <linux/bootmem.h>
++#include <linux/vs_limit.h>
+ #include "internal.h"
+
+
+@@ -155,6 +156,7 @@ void dput(struct dentry *dentry)
+ if (!dentry)
+ return;
+
++ vx_dentry_dec(dentry);
+ repeat:
+ if (atomic_read(&dentry->d_count) == 1)
+ might_sleep();
+@@ -168,6 +170,8 @@ repeat:
+ return;
+ }
+
++ vx_dentry_dec(dentry);
++
+ /*
+ * AV: ->d_delete() is _NOT_ allowed to block now.
+ */
+@@ -278,6 +282,7 @@ static inline struct dentry * __dget_loc
+ if (!list_empty(&dentry->d_lru)) {
+ dentry_stat.nr_unused--;
+ list_del_init(&dentry->d_lru);
++ vx_dentry_inc(dentry);
+ }
+ return dentry;
+ }
+@@ -869,6 +874,9 @@ struct dentry *d_alloc(struct dentry * p
+ struct dentry *dentry;
+ char *dname;
+
++ if (!vx_dentry_avail(1))
++ return NULL;
++
+ dentry = kmem_cache_alloc(dentry_cache, GFP_KERNEL);
+ if (!dentry)
+ return NULL;
+@@ -917,6 +925,7 @@ struct dentry *d_alloc(struct dentry * p
+ if (parent)
+ list_add(&dentry->d_u.d_child, &parent->d_subdirs);
+ dentry_stat.nr_dentry++;
++ vx_dentry_inc(dentry);
+ spin_unlock(&dcache_lock);
+
+ return dentry;
+@@ -1266,6 +1275,7 @@ struct dentry * __d_lookup(struct dentry
+
+ if (!d_unhashed(dentry)) {
+ atomic_inc(&dentry->d_count);
++ vx_dentry_inc(dentry);
+ found = dentry;
+ }
+ spin_unlock(&dentry->d_lock);
+diff -NurpP --minimal linux-2.6.20.4/fs/devpts/inode.c linux-2.6.20.4-vs2.2.0-rc20/fs/devpts/inode.c
+--- linux-2.6.20.4/fs/devpts/inode.c 2006-11-30 21:19:19 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/devpts/inode.c 2007-02-06 03:05:22 +0100
+@@ -19,8 +19,22 @@
+ #include <linux/tty.h>
+ #include <linux/devpts_fs.h>
+ #include <linux/parser.h>
++#include <linux/vs_base.h>
+
+-#define DEVPTS_SUPER_MAGIC 0x1cd1
++
++static int devpts_permission(struct inode *inode, int mask, struct nameidata *nd)
++{
++ int ret = -EACCES;
++
++ /* devpts is xid tagged */
++ if (vx_check((xid_t)inode->i_tag, VS_WATCH_P|VS_IDENT))
++ ret = generic_permission(inode, mask, NULL);
++ return ret;
++}
++
++static struct inode_operations devpts_file_inode_operations = {
++ .permission = devpts_permission,
++};
+
+ static struct vfsmount *devpts_mnt;
+ static struct dentry *devpts_root;
+@@ -91,6 +105,25 @@ static int devpts_remount(struct super_b
+ return 0;
+ }
+
++static int devpts_filter(struct dentry *de)
++{
++ /* devpts is xid tagged */
++ return vx_check((xid_t)de->d_inode->i_tag, VS_WATCH_P|VS_IDENT);
++}
++
++static int devpts_readdir(struct file * filp, void * dirent, filldir_t filldir)
++{
++ return dcache_readdir_filter(filp, dirent, filldir, devpts_filter);
++}
++
++static struct file_operations devpts_dir_operations = {
++ .open = dcache_dir_open,
++ .release = dcache_dir_close,
++ .llseek = dcache_dir_lseek,
++ .read = generic_read_dir,
++ .readdir = devpts_readdir,
++};
++
+ static struct super_operations devpts_sops = {
+ .statfs = simple_statfs,
+ .remount_fs = devpts_remount,
+@@ -116,8 +149,10 @@ devpts_fill_super(struct super_block *s,
+ inode->i_uid = inode->i_gid = 0;
+ inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO | S_IWUSR;
+ inode->i_op = &simple_dir_inode_operations;
+- inode->i_fop = &simple_dir_operations;
++ inode->i_fop = &devpts_dir_operations;
+ inode->i_nlink = 2;
++ /* devpts is xid tagged */
++ inode->i_tag = (tag_t)vx_current_xid();
+
+ devpts_root = s->s_root = d_alloc_root(inode);
+ if (s->s_root)
+@@ -175,6 +210,9 @@ int devpts_pty_new(struct tty_struct *tt
+ inode->i_gid = config.setgid ? config.gid : current->fsgid;
+ inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
+ init_special_inode(inode, S_IFCHR|config.mode, device);
++ /* devpts is xid tagged */
++ inode->i_tag = (tag_t)vx_current_xid();
++ inode->i_op = &devpts_file_inode_operations;
+ inode->i_private = tty;
+
+ dentry = get_node(number);
+diff -NurpP --minimal linux-2.6.20.4/fs/ecryptfs/inode.c linux-2.6.20.4-vs2.2.0-rc20/fs/ecryptfs/inode.c
+--- linux-2.6.20.4/fs/ecryptfs/inode.c 2007-02-06 03:01:17 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ecryptfs/inode.c 2007-02-06 03:05:22 +0100
+@@ -415,7 +415,7 @@ static int ecryptfs_link(struct dentry *
+ dget(lower_new_dentry);
+ lower_dir_dentry = lock_parent(lower_new_dentry);
+ rc = vfs_link(lower_old_dentry, lower_dir_dentry->d_inode,
+- lower_new_dentry);
++ lower_new_dentry, NULL);
+ if (rc || !lower_new_dentry->d_inode)
+ goto out_lock;
+ rc = ecryptfs_interpose(lower_new_dentry, new_dentry, dir->i_sb, 0);
+@@ -443,7 +443,7 @@ static int ecryptfs_unlink(struct inode
+ struct inode *lower_dir_inode = ecryptfs_inode_to_lower(dir);
+
+ lock_parent(lower_dentry);
+- rc = vfs_unlink(lower_dir_inode, lower_dentry);
++ rc = vfs_unlink(lower_dir_inode, lower_dentry, NULL);
+ if (rc) {
+ printk(KERN_ERR "Error in vfs_unlink; rc = [%d]\n", rc);
+ goto out_unlock;
+@@ -480,7 +480,7 @@ static int ecryptfs_symlink(struct inode
+ goto out_lock;
+ }
+ rc = vfs_symlink(lower_dir_dentry->d_inode, lower_dentry,
+- encoded_symname, mode);
++ encoded_symname, mode, NULL);
+ kfree(encoded_symname);
+ if (rc || !lower_dentry->d_inode)
+ goto out_lock;
+@@ -505,7 +505,7 @@ static int ecryptfs_mkdir(struct inode *
+
+ lower_dentry = ecryptfs_dentry_to_lower(dentry);
+ lower_dir_dentry = lock_parent(lower_dentry);
+- rc = vfs_mkdir(lower_dir_dentry->d_inode, lower_dentry, mode);
++ rc = vfs_mkdir(lower_dir_dentry->d_inode, lower_dentry, mode, NULL);
+ if (rc || !lower_dentry->d_inode)
+ goto out;
+ rc = ecryptfs_interpose(lower_dentry, dentry, dir->i_sb, 0);
+@@ -531,7 +531,7 @@ static int ecryptfs_rmdir(struct inode *
+ dget(dentry);
+ lower_dir_dentry = lock_parent(lower_dentry);
+ dget(lower_dentry);
+- rc = vfs_rmdir(lower_dir_dentry->d_inode, lower_dentry);
++ rc = vfs_rmdir(lower_dir_dentry->d_inode, lower_dentry, NULL);
+ dput(lower_dentry);
+ if (!rc)
+ d_delete(lower_dentry);
+@@ -553,7 +553,7 @@ ecryptfs_mknod(struct inode *dir, struct
+
+ lower_dentry = ecryptfs_dentry_to_lower(dentry);
+ lower_dir_dentry = lock_parent(lower_dentry);
+- rc = vfs_mknod(lower_dir_dentry->d_inode, lower_dentry, mode, dev);
++ rc = vfs_mknod(lower_dir_dentry->d_inode, lower_dentry, mode, dev, NULL);
+ if (rc || !lower_dentry->d_inode)
+ goto out;
+ rc = ecryptfs_interpose(lower_dentry, dentry, dir->i_sb, 0);
+diff -NurpP --minimal linux-2.6.20.4/fs/exec.c linux-2.6.20.4-vs2.2.0-rc20/fs/exec.c
+--- linux-2.6.20.4/fs/exec.c 2007-02-06 03:01:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/exec.c 2007-02-06 03:05:22 +0100
+@@ -50,6 +50,7 @@
+ #include <linux/tsacct_kern.h>
+ #include <linux/cn_proc.h>
+ #include <linux/audit.h>
++#include <linux/vs_memory.h>
+
+ #include <asm/uaccess.h>
+ #include <asm/mmu_context.h>
+@@ -437,7 +438,8 @@ int setup_arg_pages(struct linux_binprm
+ kmem_cache_free(vm_area_cachep, mpnt);
+ return ret;
+ }
+- mm->stack_vm = mm->total_vm = vma_pages(mpnt);
++ vx_vmpages_sub(mm, mm->total_vm - vma_pages(mpnt));
++ mm->stack_vm = mm->total_vm;
+ }
+
+ for (i = 0 ; i < MAX_ARG_PAGES ; i++) {
+@@ -1307,7 +1309,7 @@ static void format_corename(char *corena
+ /* UNIX time of coredump */
+ case 't': {
+ struct timeval tv;
+- do_gettimeofday(&tv);
++ vx_gettimeofday(&tv);
+ rc = snprintf(out_ptr, out_end - out_ptr,
+ "%lu", tv.tv_sec);
+ if (rc > out_end - out_ptr)
+diff -NurpP --minimal linux-2.6.20.4/fs/ext2/balloc.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext2/balloc.c
+--- linux-2.6.20.4/fs/ext2/balloc.c 2006-09-20 16:58:34 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext2/balloc.c 2007-02-06 03:05:22 +0100
+@@ -16,6 +16,8 @@
+ #include <linux/sched.h>
+ #include <linux/buffer_head.h>
+ #include <linux/capability.h>
++#include <linux/vs_dlimit.h>
++#include <linux/vs_tag.h>
+
+ /*
+ * balloc.c contains the blocks allocation and deallocation routines
+@@ -102,12 +104,13 @@ static int reserve_blocks(struct super_b
+ {
+ struct ext2_sb_info *sbi = EXT2_SB(sb);
+ struct ext2_super_block *es = sbi->s_es;
+- unsigned free_blocks;
+- unsigned root_blocks;
++ unsigned long long free_blocks, root_blocks;
+
+ free_blocks = percpu_counter_read_positive(&sbi->s_freeblocks_counter);
+ root_blocks = le32_to_cpu(es->s_r_blocks_count);
+
++ DLIMIT_ADJUST_BLOCK(sb, dx_current_tag(), &free_blocks, &root_blocks);
++
+ if (free_blocks < count)
+ count = free_blocks;
+
+@@ -258,6 +261,7 @@ do_more:
+ }
+ error_return:
+ brelse(bitmap_bh);
++ DLIMIT_FREE_BLOCK(inode, freed);
+ release_blocks(sb, freed);
+ DQUOT_FREE_BLOCK(inode, freed);
+ }
+@@ -361,6 +365,10 @@ int ext2_new_block(struct inode *inode,
+ *err = -ENOSPC;
+ goto out_dquot;
+ }
++ if (DLIMIT_ALLOC_BLOCK(inode, es_alloc)) {
++ *err = -ENOSPC;
++ goto out_dlimit;
++ }
+
+ ext2_debug ("goal=%lu.\n", goal);
+
+@@ -508,6 +516,8 @@ got_block:
+ *err = 0;
+ out_release:
+ group_release_blocks(sb, group_no, desc, gdp_bh, group_alloc);
++ DLIMIT_FREE_BLOCK(inode, es_alloc);
++out_dlimit:
+ release_blocks(sb, es_alloc);
+ out_dquot:
+ DQUOT_FREE_BLOCK(inode, dq_alloc);
+diff -NurpP --minimal linux-2.6.20.4/fs/ext2/ext2.h linux-2.6.20.4-vs2.2.0-rc20/fs/ext2/ext2.h
+--- linux-2.6.20.4/fs/ext2/ext2.h 2006-11-30 21:19:19 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext2/ext2.h 2007-02-06 03:05:22 +0100
+@@ -166,6 +166,7 @@ extern const struct file_operations ext2
+ extern const struct address_space_operations ext2_aops;
+ extern const struct address_space_operations ext2_aops_xip;
+ extern const struct address_space_operations ext2_nobh_aops;
++extern int ext2_sync_flags(struct inode *inode);
+
+ /* namei.c */
+ extern struct inode_operations ext2_dir_inode_operations;
+diff -NurpP --minimal linux-2.6.20.4/fs/ext2/file.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext2/file.c
+--- linux-2.6.20.4/fs/ext2/file.c 2006-11-30 21:19:19 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext2/file.c 2007-02-06 03:05:22 +0100
+@@ -54,6 +54,7 @@ const struct file_operations ext2_file_o
+ .release = ext2_release_file,
+ .fsync = ext2_sync_file,
+ .sendfile = generic_file_sendfile,
++ .sendpage = generic_file_sendpage,
+ .splice_read = generic_file_splice_read,
+ .splice_write = generic_file_splice_write,
+ };
+@@ -85,4 +86,5 @@ struct inode_operations ext2_file_inode_
+ #endif
+ .setattr = ext2_setattr,
+ .permission = ext2_permission,
++ .sync_flags = ext2_sync_flags,
+ };
+diff -NurpP --minimal linux-2.6.20.4/fs/ext2/ialloc.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext2/ialloc.c
+--- linux-2.6.20.4/fs/ext2/ialloc.c 2006-11-30 21:19:19 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext2/ialloc.c 2007-02-06 03:05:22 +0100
+@@ -17,6 +17,8 @@
+ #include <linux/backing-dev.h>
+ #include <linux/buffer_head.h>
+ #include <linux/random.h>
++#include <linux/vs_dlimit.h>
++#include <linux/vs_tag.h>
+ #include "ext2.h"
+ #include "xattr.h"
+ #include "acl.h"
+@@ -125,6 +127,7 @@ void ext2_free_inode (struct inode * ino
+ ext2_xattr_delete_inode(inode);
+ DQUOT_FREE_INODE(inode);
+ DQUOT_DROP(inode);
++ DLIMIT_FREE_INODE(inode);
+ }
+
+ es = EXT2_SB(sb)->s_es;
+@@ -464,6 +467,11 @@ struct inode *ext2_new_inode(struct inod
+ if (!inode)
+ return ERR_PTR(-ENOMEM);
+
++ inode->i_tag = dx_current_fstag(sb);
++ if (DLIMIT_ALLOC_INODE(inode)) {
++ err = -ENOSPC;
++ goto fail_dlim;
++ }
+ ei = EXT2_I(inode);
+ sbi = EXT2_SB(sb);
+ es = sbi->s_es;
+@@ -577,7 +585,8 @@ got:
+ inode->i_blocks = 0;
+ inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
+ memset(ei->i_data, 0, sizeof(ei->i_data));
+- ei->i_flags = EXT2_I(dir)->i_flags & ~EXT2_BTREE_FL;
++ ei->i_flags = EXT2_I(dir)->i_flags &
++ ~(EXT2_BTREE_FL|EXT2_IUNLINK_FL|EXT2_BARRIER_FL);
+ if (S_ISLNK(mode))
+ ei->i_flags &= ~(EXT2_IMMUTABLE_FL|EXT2_APPEND_FL);
+ /* dirsync is only applied to directories */
+@@ -625,12 +634,15 @@ fail_free_drop:
+
+ fail_drop:
+ DQUOT_DROP(inode);
++ DLIMIT_FREE_INODE(inode);
+ inode->i_flags |= S_NOQUOTA;
+ inode->i_nlink = 0;
+ iput(inode);
+ return ERR_PTR(err);
+
+ fail:
++ DLIMIT_FREE_INODE(inode);
++fail_dlim:
+ make_bad_inode(inode);
+ iput(inode);
+ return ERR_PTR(err);
+diff -NurpP --minimal linux-2.6.20.4/fs/ext2/inode.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext2/inode.c
+--- linux-2.6.20.4/fs/ext2/inode.c 2006-11-30 21:19:19 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext2/inode.c 2007-02-06 03:05:22 +0100
+@@ -31,6 +31,7 @@
+ #include <linux/writeback.h>
+ #include <linux/buffer_head.h>
+ #include <linux/mpage.h>
++#include <linux/vs_tag.h>
+ #include "ext2.h"
+ #include "acl.h"
+ #include "xip.h"
+@@ -913,7 +914,7 @@ void ext2_truncate (struct inode * inode
+ return;
+ if (ext2_inode_is_fast_symlink(inode))
+ return;
+- if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
++ if (IS_APPEND(inode) || IS_IXORUNLINK(inode))
+ return;
+
+ ext2_discard_prealloc(inode);
+@@ -1042,25 +1043,57 @@ void ext2_set_inode_flags(struct inode *
+ {
+ unsigned int flags = EXT2_I(inode)->i_flags;
+
+- inode->i_flags &= ~(S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC);
++ inode->i_flags &= ~(S_IMMUTABLE | S_IUNLINK | S_BARRIER |
++ S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC);
++
++ if (flags & EXT2_IMMUTABLE_FL)
++ inode->i_flags |= S_IMMUTABLE;
++ if (flags & EXT2_IUNLINK_FL)
++ inode->i_flags |= S_IUNLINK;
++ if (flags & EXT2_BARRIER_FL)
++ inode->i_flags |= S_BARRIER;
++
+ if (flags & EXT2_SYNC_FL)
+ inode->i_flags |= S_SYNC;
+ if (flags & EXT2_APPEND_FL)
+ inode->i_flags |= S_APPEND;
+- if (flags & EXT2_IMMUTABLE_FL)
+- inode->i_flags |= S_IMMUTABLE;
+ if (flags & EXT2_NOATIME_FL)
+ inode->i_flags |= S_NOATIME;
+ if (flags & EXT2_DIRSYNC_FL)
+ inode->i_flags |= S_DIRSYNC;
+ }
+
++int ext2_sync_flags(struct inode *inode)
++{
++ unsigned int oldflags, newflags;
++
++ oldflags = EXT2_I(inode)->i_flags;
++ newflags = oldflags & ~(EXT2_IMMUTABLE_FL |
++ EXT2_IUNLINK_FL | EXT2_BARRIER_FL);
++
++ if (IS_IMMUTABLE(inode))
++ newflags |= EXT2_IMMUTABLE_FL;
++ if (IS_IUNLINK(inode))
++ newflags |= EXT2_IUNLINK_FL;
++ if (IS_BARRIER(inode))
++ newflags |= EXT2_BARRIER_FL;
++
++ if (oldflags ^ newflags) {
++ EXT2_I(inode)->i_flags = newflags;
++ inode->i_ctime = CURRENT_TIME;
++ mark_inode_dirty(inode);
++ }
++ return 0;
++}
++
+ void ext2_read_inode (struct inode * inode)
+ {
+ struct ext2_inode_info *ei = EXT2_I(inode);
+ ino_t ino = inode->i_ino;
+ struct buffer_head * bh;
+ struct ext2_inode * raw_inode = ext2_get_inode(inode->i_sb, ino, &bh);
++ uid_t uid;
++ gid_t gid;
+ int n;
+
+ #ifdef CONFIG_EXT2_FS_POSIX_ACL
+@@ -1071,12 +1104,17 @@ void ext2_read_inode (struct inode * ino
+ goto bad_inode;
+
+ inode->i_mode = le16_to_cpu(raw_inode->i_mode);
+- inode->i_uid = (uid_t)le16_to_cpu(raw_inode->i_uid_low);
+- inode->i_gid = (gid_t)le16_to_cpu(raw_inode->i_gid_low);
++ uid = (uid_t)le16_to_cpu(raw_inode->i_uid_low);
++ gid = (gid_t)le16_to_cpu(raw_inode->i_gid_low);
+ if (!(test_opt (inode->i_sb, NO_UID32))) {
+- inode->i_uid |= le16_to_cpu(raw_inode->i_uid_high) << 16;
+- inode->i_gid |= le16_to_cpu(raw_inode->i_gid_high) << 16;
++ uid |= le16_to_cpu(raw_inode->i_uid_high) << 16;
++ gid |= le16_to_cpu(raw_inode->i_gid_high) << 16;
+ }
++ inode->i_uid = INOTAG_UID(DX_TAG(inode), uid, gid);
++ inode->i_gid = INOTAG_GID(DX_TAG(inode), uid, gid);
++ inode->i_tag = INOTAG_TAG(DX_TAG(inode), uid, gid,
++ le16_to_cpu(raw_inode->i_raw_tag));
++
+ inode->i_nlink = le16_to_cpu(raw_inode->i_links_count);
+ inode->i_size = le32_to_cpu(raw_inode->i_size);
+ inode->i_atime.tv_sec = le32_to_cpu(raw_inode->i_atime);
+@@ -1173,8 +1211,8 @@ static int ext2_update_inode(struct inod
+ struct ext2_inode_info *ei = EXT2_I(inode);
+ struct super_block *sb = inode->i_sb;
+ ino_t ino = inode->i_ino;
+- uid_t uid = inode->i_uid;
+- gid_t gid = inode->i_gid;
++ uid_t uid = TAGINO_UID(DX_TAG(inode), inode->i_uid, inode->i_tag);
++ gid_t gid = TAGINO_GID(DX_TAG(inode), inode->i_gid, inode->i_tag);
+ struct buffer_head * bh;
+ struct ext2_inode * raw_inode = ext2_get_inode(sb, ino, &bh);
+ int n;
+@@ -1209,6 +1247,9 @@ static int ext2_update_inode(struct inod
+ raw_inode->i_uid_high = 0;
+ raw_inode->i_gid_high = 0;
+ }
++#ifdef CONFIG_TAGGING_INTERN
++ raw_inode->i_raw_tag = cpu_to_le16(inode->i_tag);
++#endif
+ raw_inode->i_links_count = cpu_to_le16(inode->i_nlink);
+ raw_inode->i_size = cpu_to_le32(inode->i_size);
+ raw_inode->i_atime = cpu_to_le32(inode->i_atime.tv_sec);
+@@ -1295,7 +1336,8 @@ int ext2_setattr(struct dentry *dentry,
+ if (error)
+ return error;
+ if ((iattr->ia_valid & ATTR_UID && iattr->ia_uid != inode->i_uid) ||
+- (iattr->ia_valid & ATTR_GID && iattr->ia_gid != inode->i_gid)) {
++ (iattr->ia_valid & ATTR_GID && iattr->ia_gid != inode->i_gid) ||
++ (iattr->ia_valid & ATTR_TAG && iattr->ia_tag != inode->i_tag)) {
+ error = DQUOT_TRANSFER(inode, iattr) ? -EDQUOT : 0;
+ if (error)
+ return error;
+diff -NurpP --minimal linux-2.6.20.4/fs/ext2/ioctl.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext2/ioctl.c
+--- linux-2.6.20.4/fs/ext2/ioctl.c 2007-02-06 03:01:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext2/ioctl.c 2007-02-06 03:13:14 +0100
+@@ -13,6 +13,7 @@
+ #include <linux/sched.h>
+ #include <linux/compat.h>
+ #include <linux/smp_lock.h>
++#include <linux/mount.h>
+ #include <asm/current.h>
+ #include <asm/uaccess.h>
+
+@@ -32,7 +33,8 @@ int ext2_ioctl (struct inode * inode, st
+ case EXT2_IOC_SETFLAGS: {
+ unsigned int oldflags;
+
+- if (IS_RDONLY(inode))
++ if (IS_RDONLY(inode) ||
++ (filp && MNT_IS_RDONLY(filp->f_vfsmnt)))
+ return -EROFS;
+
+ if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
+@@ -53,7 +55,9 @@ int ext2_ioctl (struct inode * inode, st
+ *
+ * This test looks nicer. Thanks to Pauline Middelink
+ */
+- if ((flags ^ oldflags) & (EXT2_APPEND_FL | EXT2_IMMUTABLE_FL)) {
++ if ((oldflags & EXT2_IMMUTABLE_FL) ||
++ ((flags ^ oldflags) & (EXT2_APPEND_FL |
++ EXT2_IMMUTABLE_FL | EXT2_IUNLINK_FL))) {
+ if (!capable(CAP_LINUX_IMMUTABLE)) {
+ mutex_unlock(&inode->i_mutex);
+ return -EPERM;
+@@ -75,7 +79,8 @@ int ext2_ioctl (struct inode * inode, st
+ case EXT2_IOC_SETVERSION:
+ if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
+ return -EPERM;
+- if (IS_RDONLY(inode))
++ if (IS_RDONLY(inode) ||
++ (filp && MNT_IS_RDONLY(filp->f_vfsmnt)))
+ return -EROFS;
+ if (get_user(inode->i_generation, (int __user *) arg))
+ return -EFAULT;
+diff -NurpP --minimal linux-2.6.20.4/fs/ext2/namei.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext2/namei.c
+--- linux-2.6.20.4/fs/ext2/namei.c 2006-11-30 21:19:19 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext2/namei.c 2007-02-06 03:05:22 +0100
+@@ -31,6 +31,7 @@
+ */
+
+ #include <linux/pagemap.h>
++#include <linux/vs_tag.h>
+ #include "ext2.h"
+ #include "xattr.h"
+ #include "acl.h"
+@@ -66,6 +67,7 @@ static struct dentry *ext2_lookup(struct
+ inode = iget(dir->i_sb, ino);
+ if (!inode)
+ return ERR_PTR(-EACCES);
++ dx_propagate_tag(nd, inode);
+ }
+ return d_splice_alias(inode, dentry);
+ }
+@@ -391,6 +393,7 @@ struct inode_operations ext2_dir_inode_o
+ #endif
+ .setattr = ext2_setattr,
+ .permission = ext2_permission,
++ .sync_flags = ext2_sync_flags,
+ };
+
+ struct inode_operations ext2_special_inode_operations = {
+@@ -402,4 +405,5 @@ struct inode_operations ext2_special_ino
+ #endif
+ .setattr = ext2_setattr,
+ .permission = ext2_permission,
++ .sync_flags = ext2_sync_flags,
+ };
+diff -NurpP --minimal linux-2.6.20.4/fs/ext2/super.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext2/super.c
+--- linux-2.6.20.4/fs/ext2/super.c 2007-03-10 20:34:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext2/super.c 2007-03-10 18:57:30 +0100
+@@ -324,7 +324,7 @@ enum {
+ Opt_err_ro, Opt_nouid32, Opt_nocheck, Opt_debug,
+ Opt_oldalloc, Opt_orlov, Opt_nobh, Opt_user_xattr, Opt_nouser_xattr,
+ Opt_acl, Opt_noacl, Opt_xip, Opt_ignore, Opt_err, Opt_quota,
+- Opt_usrquota, Opt_grpquota
++ Opt_usrquota, Opt_grpquota, Opt_tag, Opt_notag, Opt_tagid
+ };
+
+ static match_table_t tokens = {
+@@ -352,6 +352,10 @@ static match_table_t tokens = {
+ {Opt_acl, "acl"},
+ {Opt_noacl, "noacl"},
+ {Opt_xip, "xip"},
++ {Opt_tag, "tag"},
++ {Opt_notag, "notag"},
++ {Opt_tagid, "tagid=%u"},
++ {Opt_tag, "tagxid"},
+ {Opt_grpquota, "grpquota"},
+ {Opt_ignore, "noquota"},
+ {Opt_quota, "quota"},
+@@ -420,6 +424,20 @@ static int parse_options (char * options
+ case Opt_nouid32:
+ set_opt (sbi->s_mount_opt, NO_UID32);
+ break;
++#ifndef CONFIG_TAGGING_NONE
++ case Opt_tag:
++ set_opt (sbi->s_mount_opt, TAGGED);
++ break;
++ case Opt_notag:
++ clear_opt (sbi->s_mount_opt, TAGGED);
++ break;
++#endif
++#ifdef CONFIG_PROPAGATE
++ case Opt_tagid:
++ /* use args[0] */
++ set_opt (sbi->s_mount_opt, TAGGED);
++ break;
++#endif
+ case Opt_nocheck:
+ clear_opt (sbi->s_mount_opt, CHECK);
+ break;
+@@ -730,6 +748,8 @@ static int ext2_fill_super(struct super_
+ if (!parse_options ((char *) data, sbi))
+ goto failed_mount;
+
++ if (EXT2_SB(sb)->s_mount_opt & EXT2_MOUNT_TAGGED)
++ sb->s_flags |= MS_TAGGED;
+ sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
+ ((EXT2_SB(sb)->s_mount_opt & EXT2_MOUNT_POSIX_ACL) ?
+ MS_POSIXACL : 0);
+@@ -1038,6 +1058,13 @@ static int ext2_remount (struct super_bl
+ goto restore_opts;
+ }
+
++ if ((sbi->s_mount_opt & EXT2_MOUNT_TAGGED) &&
++ !(sb->s_flags & MS_TAGGED)) {
++ printk("EXT2-fs: %s: tagging not permitted on remount.\n",
++ sb->s_id);
++ return -EINVAL;
++ }
++
+ sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
+ ((sbi->s_mount_opt & EXT2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
+
+diff -NurpP --minimal linux-2.6.20.4/fs/ext2/symlink.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext2/symlink.c
+--- linux-2.6.20.4/fs/ext2/symlink.c 2005-08-29 22:25:30 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext2/symlink.c 2007-02-06 03:05:22 +0100
+@@ -38,6 +38,7 @@ struct inode_operations ext2_symlink_ino
+ .listxattr = ext2_listxattr,
+ .removexattr = generic_removexattr,
+ #endif
++ .sync_flags = ext2_sync_flags,
+ };
+
+ struct inode_operations ext2_fast_symlink_inode_operations = {
+@@ -49,4 +50,5 @@ struct inode_operations ext2_fast_symlin
+ .listxattr = ext2_listxattr,
+ .removexattr = generic_removexattr,
+ #endif
++ .sync_flags = ext2_sync_flags,
+ };
+diff -NurpP --minimal linux-2.6.20.4/fs/ext2/xattr.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext2/xattr.c
+--- linux-2.6.20.4/fs/ext2/xattr.c 2007-02-06 03:01:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext2/xattr.c 2007-02-06 03:05:22 +0100
+@@ -60,6 +60,7 @@
+ #include <linux/mbcache.h>
+ #include <linux/quotaops.h>
+ #include <linux/rwsem.h>
++#include <linux/vs_dlimit.h>
+ #include "ext2.h"
+ #include "xattr.h"
+ #include "acl.h"
+@@ -641,8 +642,12 @@ ext2_xattr_set2(struct inode *inode, str
+ the inode. */
+ ea_bdebug(new_bh, "reusing block");
+
++ error = -ENOSPC;
++ if (DLIMIT_ALLOC_BLOCK(inode, 1))
++ goto cleanup;
+ error = -EDQUOT;
+ if (DQUOT_ALLOC_BLOCK(inode, 1)) {
++ DLIMIT_FREE_BLOCK(inode, 1);
+ unlock_buffer(new_bh);
+ goto cleanup;
+ }
+@@ -736,6 +741,7 @@ ext2_xattr_set2(struct inode *inode, str
+ le32_to_cpu(HDR(old_bh)->h_refcount) - 1);
+ if (ce)
+ mb_cache_entry_release(ce);
++ DLIMIT_FREE_BLOCK(inode, 1);
+ DQUOT_FREE_BLOCK(inode, 1);
+ mark_buffer_dirty(old_bh);
+ ea_bdebug(old_bh, "refcount now=%d",
+@@ -800,6 +806,7 @@ ext2_xattr_delete_inode(struct inode *in
+ mark_buffer_dirty(bh);
+ if (IS_SYNC(inode))
+ sync_dirty_buffer(bh);
++ DLIMIT_FREE_BLOCK(inode, 1);
+ DQUOT_FREE_BLOCK(inode, 1);
+ }
+ EXT2_I(inode)->i_file_acl = 0;
+diff -NurpP --minimal linux-2.6.20.4/fs/ext3/balloc.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext3/balloc.c
+--- linux-2.6.20.4/fs/ext3/balloc.c 2007-02-06 03:01:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext3/balloc.c 2007-02-06 03:05:22 +0100
+@@ -19,6 +19,8 @@
+ #include <linux/ext3_jbd.h>
+ #include <linux/quotaops.h>
+ #include <linux/buffer_head.h>
++#include <linux/vs_dlimit.h>
++#include <linux/vs_tag.h>
+
+ /*
+ * balloc.c contains the blocks allocation and deallocation routines
+@@ -613,8 +615,10 @@ void ext3_free_blocks(handle_t *handle,
+ return;
+ }
+ ext3_free_blocks_sb(handle, sb, block, count, &dquot_freed_blocks);
+- if (dquot_freed_blocks)
++ if (dquot_freed_blocks) {
++ DLIMIT_FREE_BLOCK(inode, dquot_freed_blocks);
+ DQUOT_FREE_BLOCK(inode, dquot_freed_blocks);
++ }
+ return;
+ }
+
+@@ -1353,18 +1357,33 @@ out:
+ *
+ * Check if filesystem has at least 1 free block available for allocation.
+ */
+-static int ext3_has_free_blocks(struct ext3_sb_info *sbi)
++static int ext3_has_free_blocks(struct super_block *sb)
+ {
+- ext3_fsblk_t free_blocks, root_blocks;
++ struct ext3_sb_info *sbi = EXT3_SB(sb);
++ unsigned long long free_blocks, root_blocks;
++ int cond;
+
+ free_blocks = percpu_counter_read_positive(&sbi->s_freeblocks_counter);
+ root_blocks = le32_to_cpu(sbi->s_es->s_r_blocks_count);
+- if (free_blocks < root_blocks + 1 && !capable(CAP_SYS_RESOURCE) &&
++
++ vxdprintk(VXD_CBIT(dlim, 3),
++ "ext3_has_free_blocks(%p): free=%llu, root=%llu",
++ sb, free_blocks, root_blocks);
++
++ DLIMIT_ADJUST_BLOCK(sb, dx_current_tag(), &free_blocks, &root_blocks);
++
++ cond = (free_blocks < root_blocks + 1 &&
++ !capable(CAP_SYS_RESOURCE) &&
+ sbi->s_resuid != current->fsuid &&
+- (sbi->s_resgid == 0 || !in_group_p (sbi->s_resgid))) {
+- return 0;
+- }
+- return 1;
++ (sbi->s_resgid == 0 || !in_group_p (sbi->s_resgid)));
++
++ vxdprintk(VXD_CBIT(dlim, 3),
++ "ext3_has_free_blocks(%p): %llu<%llu+1, %c, %u!=%u r=%d",
++ sb, free_blocks, root_blocks,
++ !capable(CAP_SYS_RESOURCE)?'1':'0',
++ sbi->s_resuid, current->fsuid, cond?0:1);
++
++ return (cond ? 0 : 1);
+ }
+
+ /**
+@@ -1381,7 +1400,7 @@ static int ext3_has_free_blocks(struct e
+ */
+ int ext3_should_retry_alloc(struct super_block *sb, int *retries)
+ {
+- if (!ext3_has_free_blocks(EXT3_SB(sb)) || (*retries)++ > 3)
++ if (!ext3_has_free_blocks(sb) || (*retries)++ > 3)
+ return 0;
+
+ jbd_debug(1, "%s: retrying operation after ENOSPC\n", sb->s_id);
+@@ -1444,6 +1463,8 @@ ext3_fsblk_t ext3_new_blocks(handle_t *h
+ *errp = -EDQUOT;
+ return 0;
+ }
++ if (DLIMIT_ALLOC_BLOCK(inode, 1))
++ goto out_dlimit;
+
+ sbi = EXT3_SB(sb);
+ es = EXT3_SB(sb)->s_es;
+@@ -1460,7 +1481,7 @@ ext3_fsblk_t ext3_new_blocks(handle_t *h
+ if (block_i && ((windowsz = block_i->rsv_window_node.rsv_goal_size) > 0))
+ my_rsv = &block_i->rsv_window_node;
+
+- if (!ext3_has_free_blocks(sbi)) {
++ if (!ext3_has_free_blocks(sb)) {
+ *errp = -ENOSPC;
+ goto out;
+ }
+@@ -1653,6 +1674,9 @@ allocated:
+ io_error:
+ *errp = -EIO;
+ out:
++ if (!performed_allocation)
++ DLIMIT_FREE_BLOCK(inode, 1);
++out_dlimit:
+ if (fatal) {
+ *errp = fatal;
+ ext3_std_error(sb, fatal);
+diff -NurpP --minimal linux-2.6.20.4/fs/ext3/file.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext3/file.c
+--- linux-2.6.20.4/fs/ext3/file.c 2007-02-06 03:01:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext3/file.c 2007-02-06 03:05:22 +0100
+@@ -121,6 +121,7 @@ const struct file_operations ext3_file_o
+ .release = ext3_release_file,
+ .fsync = ext3_sync_file,
+ .sendfile = generic_file_sendfile,
++ .sendpage = generic_file_sendpage,
+ .splice_read = generic_file_splice_read,
+ .splice_write = generic_file_splice_write,
+ };
+@@ -135,5 +136,6 @@ struct inode_operations ext3_file_inode_
+ .removexattr = generic_removexattr,
+ #endif
+ .permission = ext3_permission,
++ .sync_flags = ext3_sync_flags,
+ };
+
+diff -NurpP --minimal linux-2.6.20.4/fs/ext3/ialloc.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext3/ialloc.c
+--- linux-2.6.20.4/fs/ext3/ialloc.c 2006-11-30 21:19:19 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext3/ialloc.c 2007-02-06 03:05:22 +0100
+@@ -23,6 +23,8 @@
+ #include <linux/buffer_head.h>
+ #include <linux/random.h>
+ #include <linux/bitops.h>
++#include <linux/vs_dlimit.h>
++#include <linux/vs_tag.h>
+
+ #include <asm/byteorder.h>
+
+@@ -127,6 +129,7 @@ void ext3_free_inode (handle_t *handle,
+ ext3_xattr_delete_inode(handle, inode);
+ DQUOT_FREE_INODE(inode);
+ DQUOT_DROP(inode);
++ DLIMIT_FREE_INODE(inode);
+
+ is_directory = S_ISDIR(inode->i_mode);
+
+@@ -445,6 +448,12 @@ struct inode *ext3_new_inode(handle_t *h
+ inode = new_inode(sb);
+ if (!inode)
+ return ERR_PTR(-ENOMEM);
++
++ inode->i_tag = dx_current_fstag(sb);
++ if (DLIMIT_ALLOC_INODE(inode)) {
++ err = -ENOSPC;
++ goto out_dlimit;
++ }
+ ei = EXT3_I(inode);
+
+ sbi = EXT3_SB(sb);
+@@ -566,7 +575,8 @@ got:
+ ei->i_dir_start_lookup = 0;
+ ei->i_disksize = 0;
+
+- ei->i_flags = EXT3_I(dir)->i_flags & ~EXT3_INDEX_FL;
++ ei->i_flags = EXT3_I(dir)->i_flags &
++ ~(EXT3_INDEX_FL|EXT3_IUNLINK_FL|EXT3_BARRIER_FL);
+ if (S_ISLNK(mode))
+ ei->i_flags &= ~(EXT3_IMMUTABLE_FL|EXT3_APPEND_FL);
+ /* dirsync only applies to directories */
+@@ -621,6 +631,8 @@ got:
+ fail:
+ ext3_std_error(sb, err);
+ out:
++ DLIMIT_FREE_INODE(inode);
++out_dlimit:
+ iput(inode);
+ ret = ERR_PTR(err);
+ really_out:
+@@ -632,6 +644,7 @@ fail_free_drop:
+
+ fail_drop:
+ DQUOT_DROP(inode);
++ DLIMIT_FREE_INODE(inode);
+ inode->i_flags |= S_NOQUOTA;
+ inode->i_nlink = 0;
+ iput(inode);
+diff -NurpP --minimal linux-2.6.20.4/fs/ext3/inode.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext3/inode.c
+--- linux-2.6.20.4/fs/ext3/inode.c 2007-02-06 03:01:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext3/inode.c 2007-02-06 03:05:22 +0100
+@@ -37,6 +37,7 @@
+ #include <linux/mpage.h>
+ #include <linux/uio.h>
+ #include <linux/bio.h>
++#include <linux/vs_tag.h>
+ #include "xattr.h"
+ #include "acl.h"
+
+@@ -2311,7 +2312,7 @@ void ext3_truncate(struct inode *inode)
+ return;
+ if (ext3_inode_is_fast_symlink(inode))
+ return;
+- if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
++ if (IS_APPEND(inode) || IS_IXORUNLINK(inode))
+ return;
+
+ /*
+@@ -2633,19 +2634,65 @@ void ext3_set_inode_flags(struct inode *
+ {
+ unsigned int flags = EXT3_I(inode)->i_flags;
+
+- inode->i_flags &= ~(S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC);
++ inode->i_flags &= ~(S_IMMUTABLE | S_IUNLINK | S_BARRIER |
++ S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC);
++
++ if (flags & EXT3_IMMUTABLE_FL)
++ inode->i_flags |= S_IMMUTABLE;
++ if (flags & EXT3_IUNLINK_FL)
++ inode->i_flags |= S_IUNLINK;
++ if (flags & EXT3_BARRIER_FL)
++ inode->i_flags |= S_BARRIER;
++
+ if (flags & EXT3_SYNC_FL)
+ inode->i_flags |= S_SYNC;
+ if (flags & EXT3_APPEND_FL)
+ inode->i_flags |= S_APPEND;
+- if (flags & EXT3_IMMUTABLE_FL)
+- inode->i_flags |= S_IMMUTABLE;
+ if (flags & EXT3_NOATIME_FL)
+ inode->i_flags |= S_NOATIME;
+ if (flags & EXT3_DIRSYNC_FL)
+ inode->i_flags |= S_DIRSYNC;
+ }
+
++int ext3_sync_flags(struct inode *inode)
++{
++ unsigned int oldflags, newflags;
++ int err = 0;
++
++ oldflags = EXT3_I(inode)->i_flags;
++ newflags = oldflags & ~(EXT3_IMMUTABLE_FL |
++ EXT3_IUNLINK_FL | EXT3_BARRIER_FL);
++
++ if (IS_IMMUTABLE(inode))
++ newflags |= EXT3_IMMUTABLE_FL;
++ if (IS_IUNLINK(inode))
++ newflags |= EXT3_IUNLINK_FL;
++ if (IS_BARRIER(inode))
++ newflags |= EXT3_BARRIER_FL;
++
++ if (oldflags ^ newflags) {
++ handle_t *handle;
++ struct ext3_iloc iloc;
++
++ handle = ext3_journal_start(inode, 1);
++ if (IS_ERR(handle))
++ return PTR_ERR(handle);
++ if (IS_SYNC(inode))
++ handle->h_sync = 1;
++ err = ext3_reserve_inode_write(handle, inode, &iloc);
++ if (err)
++ goto flags_err;
++
++ EXT3_I(inode)->i_flags = newflags;
++ inode->i_ctime = CURRENT_TIME;
++
++ err = ext3_mark_iloc_dirty(handle, inode, &iloc);
++ flags_err:
++ ext3_journal_stop(handle);
++ }
++ return err;
++}
++
+ void ext3_read_inode(struct inode * inode)
+ {
+ struct ext3_iloc iloc;
+@@ -2653,6 +2700,8 @@ void ext3_read_inode(struct inode * inod
+ struct ext3_inode_info *ei = EXT3_I(inode);
+ struct buffer_head *bh;
+ int block;
++ uid_t uid;
++ gid_t gid;
+
+ #ifdef CONFIG_EXT3_FS_POSIX_ACL
+ ei->i_acl = EXT3_ACL_NOT_CACHED;
+@@ -2665,12 +2714,17 @@ void ext3_read_inode(struct inode * inod
+ bh = iloc.bh;
+ raw_inode = ext3_raw_inode(&iloc);
+ inode->i_mode = le16_to_cpu(raw_inode->i_mode);
+- inode->i_uid = (uid_t)le16_to_cpu(raw_inode->i_uid_low);
+- inode->i_gid = (gid_t)le16_to_cpu(raw_inode->i_gid_low);
++ uid = (uid_t)le16_to_cpu(raw_inode->i_uid_low);
++ gid = (gid_t)le16_to_cpu(raw_inode->i_gid_low);
+ if(!(test_opt (inode->i_sb, NO_UID32))) {
+- inode->i_uid |= le16_to_cpu(raw_inode->i_uid_high) << 16;
+- inode->i_gid |= le16_to_cpu(raw_inode->i_gid_high) << 16;
++ uid |= le16_to_cpu(raw_inode->i_uid_high) << 16;
++ gid |= le16_to_cpu(raw_inode->i_gid_high) << 16;
+ }
++ inode->i_uid = INOTAG_UID(DX_TAG(inode), uid, gid);
++ inode->i_gid = INOTAG_GID(DX_TAG(inode), uid, gid);
++ inode->i_tag = INOTAG_TAG(DX_TAG(inode), uid, gid,
++ le16_to_cpu(raw_inode->i_raw_tag));
++
+ inode->i_nlink = le16_to_cpu(raw_inode->i_links_count);
+ inode->i_size = le32_to_cpu(raw_inode->i_size);
+ inode->i_atime.tv_sec = le32_to_cpu(raw_inode->i_atime);
+@@ -2794,6 +2848,8 @@ static int ext3_do_update_inode(handle_t
+ struct ext3_inode *raw_inode = ext3_raw_inode(iloc);
+ struct ext3_inode_info *ei = EXT3_I(inode);
+ struct buffer_head *bh = iloc->bh;
++ uid_t uid = TAGINO_UID(DX_TAG(inode), inode->i_uid, inode->i_tag);
++ gid_t gid = TAGINO_GID(DX_TAG(inode), inode->i_gid, inode->i_tag);
+ int err = 0, rc, block;
+
+ /* For fields not not tracking in the in-memory inode,
+@@ -2803,29 +2859,32 @@ static int ext3_do_update_inode(handle_t
+
+ raw_inode->i_mode = cpu_to_le16(inode->i_mode);
+ if(!(test_opt(inode->i_sb, NO_UID32))) {
+- raw_inode->i_uid_low = cpu_to_le16(low_16_bits(inode->i_uid));
+- raw_inode->i_gid_low = cpu_to_le16(low_16_bits(inode->i_gid));
++ raw_inode->i_uid_low = cpu_to_le16(low_16_bits(uid));
++ raw_inode->i_gid_low = cpu_to_le16(low_16_bits(gid));
+ /*
+ * Fix up interoperability with old kernels. Otherwise, old inodes get
+ * re-used with the upper 16 bits of the uid/gid intact
+ */
+ if(!ei->i_dtime) {
+ raw_inode->i_uid_high =
+- cpu_to_le16(high_16_bits(inode->i_uid));
++ cpu_to_le16(high_16_bits(uid));
+ raw_inode->i_gid_high =
+- cpu_to_le16(high_16_bits(inode->i_gid));
++ cpu_to_le16(high_16_bits(gid));
+ } else {
+ raw_inode->i_uid_high = 0;
+ raw_inode->i_gid_high = 0;
+ }
+ } else {
+ raw_inode->i_uid_low =
+- cpu_to_le16(fs_high2lowuid(inode->i_uid));
++ cpu_to_le16(fs_high2lowuid(uid));
+ raw_inode->i_gid_low =
+- cpu_to_le16(fs_high2lowgid(inode->i_gid));
++ cpu_to_le16(fs_high2lowgid(gid));
+ raw_inode->i_uid_high = 0;
+ raw_inode->i_gid_high = 0;
+ }
++#ifdef CONFIG_TAGGING_INTERN
++ raw_inode->i_raw_tag = cpu_to_le16(inode->i_tag);
++#endif
+ raw_inode->i_links_count = cpu_to_le16(inode->i_nlink);
+ raw_inode->i_size = cpu_to_le32(ei->i_disksize);
+ raw_inode->i_atime = cpu_to_le32(inode->i_atime.tv_sec);
+@@ -2978,7 +3037,8 @@ int ext3_setattr(struct dentry *dentry,
+ return error;
+
+ if ((ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid) ||
+- (ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid)) {
++ (ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid) ||
++ (ia_valid & ATTR_TAG && attr->ia_tag != inode->i_tag)) {
+ handle_t *handle;
+
+ /* (user+group)*(old+new) structure, inode write (sb,
+@@ -3000,6 +3060,8 @@ int ext3_setattr(struct dentry *dentry,
+ inode->i_uid = attr->ia_uid;
+ if (attr->ia_valid & ATTR_GID)
+ inode->i_gid = attr->ia_gid;
++ if ((attr->ia_valid & ATTR_TAG) && IS_TAGGED(inode))
++ inode->i_tag = attr->ia_tag;
+ error = ext3_mark_inode_dirty(handle, inode);
+ ext3_journal_stop(handle);
+ }
+diff -NurpP --minimal linux-2.6.20.4/fs/ext3/ioctl.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext3/ioctl.c
+--- linux-2.6.20.4/fs/ext3/ioctl.c 2007-02-06 03:01:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext3/ioctl.c 2007-02-06 03:05:22 +0100
+@@ -8,6 +8,7 @@
+ */
+
+ #include <linux/fs.h>
++#include <linux/mount.h>
+ #include <linux/jbd.h>
+ #include <linux/capability.h>
+ #include <linux/ext3_fs.h>
+@@ -15,6 +16,7 @@
+ #include <linux/time.h>
+ #include <linux/compat.h>
+ #include <linux/smp_lock.h>
++#include <linux/vs_tag.h>
+ #include <asm/uaccess.h>
+
+ int ext3_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
+@@ -37,7 +39,8 @@ int ext3_ioctl (struct inode * inode, st
+ unsigned int oldflags;
+ unsigned int jflag;
+
+- if (IS_RDONLY(inode))
++ if (IS_RDONLY(inode) ||
++ (filp && MNT_IS_RDONLY(filp->f_vfsmnt)))
+ return -EROFS;
+
+ if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
+@@ -61,7 +64,9 @@ int ext3_ioctl (struct inode * inode, st
+ *
+ * This test looks nicer. Thanks to Pauline Middelink
+ */
+- if ((flags ^ oldflags) & (EXT3_APPEND_FL | EXT3_IMMUTABLE_FL)) {
++ if ((oldflags & EXT3_IMMUTABLE_FL) ||
++ ((flags ^ oldflags) & (EXT3_APPEND_FL |
++ EXT3_IMMUTABLE_FL | EXT3_IUNLINK_FL))) {
+ if (!capable(CAP_LINUX_IMMUTABLE)) {
+ mutex_unlock(&inode->i_mutex);
+ return -EPERM;
+@@ -123,7 +128,8 @@ flags_err:
+
+ if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
+ return -EPERM;
+- if (IS_RDONLY(inode))
++ if (IS_RDONLY(inode) ||
++ (filp && MNT_IS_RDONLY(filp->f_vfsmnt)))
+ return -EROFS;
+ if (get_user(generation, (int __user *) arg))
+ return -EFAULT;
+@@ -177,7 +183,8 @@ flags_err:
+ if (!test_opt(inode->i_sb, RESERVATION) ||!S_ISREG(inode->i_mode))
+ return -ENOTTY;
+
+- if (IS_RDONLY(inode))
++ if (IS_RDONLY(inode) ||
++ (filp && MNT_IS_RDONLY(filp->f_vfsmnt)))
+ return -EROFS;
+
+ if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
+@@ -212,7 +219,8 @@ flags_err:
+ if (!capable(CAP_SYS_RESOURCE))
+ return -EPERM;
+
+- if (IS_RDONLY(inode))
++ if (IS_RDONLY(inode) ||
++ (filp && MNT_IS_RDONLY(filp->f_vfsmnt)))
+ return -EROFS;
+
+ if (get_user(n_blocks_count, (__u32 __user *)arg))
+@@ -233,7 +241,8 @@ flags_err:
+ if (!capable(CAP_SYS_RESOURCE))
+ return -EPERM;
+
+- if (IS_RDONLY(inode))
++ if (IS_RDONLY(inode) ||
++ (filp && MNT_IS_RDONLY(filp->f_vfsmnt)))
+ return -EROFS;
+
+ if (copy_from_user(&input, (struct ext3_new_group_input __user *)arg,
+@@ -248,6 +257,38 @@ flags_err:
+ return err;
+ }
+
++#if defined(CONFIG_VSERVER_LEGACY) && !defined(CONFIG_TAGGING_NONE)
++ case EXT3_IOC_SETTAG: {
++ handle_t *handle;
++ struct ext3_iloc iloc;
++ int tag;
++ int err;
++
++ /* fixme: if stealth, return -ENOTTY */
++ if (!capable(CAP_CONTEXT))
++ return -EPERM;
++ if (IS_RDONLY(inode))
++ return -EROFS;
++ if (!(inode->i_sb->s_flags & MS_TAGGED))
++ return -ENOSYS;
++ if (get_user(tag, (int __user *) arg))
++ return -EFAULT;
++
++ handle = ext3_journal_start(inode, 1);
++ if (IS_ERR(handle))
++ return PTR_ERR(handle);
++ err = ext3_reserve_inode_write(handle, inode, &iloc);
++ if (err)
++ return err;
++
++ inode->i_tag = (tag & 0xFFFF);
++ inode->i_ctime = CURRENT_TIME;
++
++ err = ext3_mark_iloc_dirty(handle, inode, &iloc);
++ ext3_journal_stop(handle);
++ return err;
++ }
++#endif
+
+ default:
+ return -ENOTTY;
+diff -NurpP --minimal linux-2.6.20.4/fs/ext3/namei.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext3/namei.c
+--- linux-2.6.20.4/fs/ext3/namei.c 2007-02-06 03:01:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext3/namei.c 2007-02-06 03:05:22 +0100
+@@ -37,6 +37,7 @@
+ #include <linux/buffer_head.h>
+ #include <linux/bio.h>
+ #include <linux/smp_lock.h>
++#include <linux/vs_tag.h>
+
+ #include "namei.h"
+ #include "xattr.h"
+@@ -1019,6 +1020,7 @@ static struct dentry *ext3_lookup(struct
+
+ if (!inode)
+ return ERR_PTR(-EACCES);
++ dx_propagate_tag(nd, inode);
+ }
+ return d_splice_alias(inode, dentry);
+ }
+@@ -2392,6 +2394,7 @@ struct inode_operations ext3_dir_inode_o
+ .removexattr = generic_removexattr,
+ #endif
+ .permission = ext3_permission,
++ .sync_flags = ext3_sync_flags,
+ };
+
+ struct inode_operations ext3_special_inode_operations = {
+@@ -2403,4 +2406,5 @@ struct inode_operations ext3_special_ino
+ .removexattr = generic_removexattr,
+ #endif
+ .permission = ext3_permission,
++ .sync_flags = ext3_sync_flags,
+ };
+diff -NurpP --minimal linux-2.6.20.4/fs/ext3/super.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext3/super.c
+--- linux-2.6.20.4/fs/ext3/super.c 2007-03-10 20:34:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext3/super.c 2007-03-10 18:57:30 +0100
+@@ -677,7 +677,7 @@ enum {
+ Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
+ Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_quota, Opt_noquota,
+ Opt_ignore, Opt_barrier, Opt_err, Opt_resize, Opt_usrquota,
+- Opt_grpquota
++ Opt_grpquota, Opt_tag, Opt_notag, Opt_tagid
+ };
+
+ static match_table_t tokens = {
+@@ -727,6 +727,10 @@ static match_table_t tokens = {
+ {Opt_quota, "quota"},
+ {Opt_usrquota, "usrquota"},
+ {Opt_barrier, "barrier=%u"},
++ {Opt_tag, "tag"},
++ {Opt_notag, "notag"},
++ {Opt_tagid, "tagid=%u"},
++ {Opt_tag, "tagxid"},
+ {Opt_err, NULL},
+ {Opt_resize, "resize"},
+ };
+@@ -820,6 +824,20 @@ static int parse_options (char *options,
+ case Opt_nouid32:
+ set_opt (sbi->s_mount_opt, NO_UID32);
+ break;
++#ifndef CONFIG_TAGGING_NONE
++ case Opt_tag:
++ set_opt (sbi->s_mount_opt, TAGGED);
++ break;
++ case Opt_notag:
++ clear_opt (sbi->s_mount_opt, TAGGED);
++ break;
++#endif
++#ifdef CONFIG_PROPAGATE
++ case Opt_tagid:
++ /* use args[0] */
++ set_opt (sbi->s_mount_opt, TAGGED);
++ break;
++#endif
+ case Opt_nocheck:
+ clear_opt (sbi->s_mount_opt, CHECK);
+ break;
+@@ -1490,6 +1508,9 @@ static int ext3_fill_super (struct super
+ NULL, 0))
+ goto failed_mount;
+
++ if (EXT3_SB(sb)->s_mount_opt & EXT3_MOUNT_TAGGED)
++ sb->s_flags |= MS_TAGGED;
++
+ sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
+ ((sbi->s_mount_opt & EXT3_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
+
+@@ -2305,6 +2326,12 @@ static int ext3_remount (struct super_bl
+
+ if (sbi->s_mount_opt & EXT3_MOUNT_ABORT)
+ ext3_abort(sb, __FUNCTION__, "Abort forced by user");
++ if ((sbi->s_mount_opt & EXT3_MOUNT_TAGGED) &&
++ !(sb->s_flags & MS_TAGGED)) {
++ printk("EXT3-fs: %s: tagging not permitted on remount.\n",
++ sb->s_id);
++ return -EINVAL;
++ }
+
+ sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
+ ((sbi->s_mount_opt & EXT3_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
+diff -NurpP --minimal linux-2.6.20.4/fs/ext3/symlink.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext3/symlink.c
+--- linux-2.6.20.4/fs/ext3/symlink.c 2005-08-29 22:25:30 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext3/symlink.c 2007-02-06 03:05:22 +0100
+@@ -40,6 +40,7 @@ struct inode_operations ext3_symlink_ino
+ .listxattr = ext3_listxattr,
+ .removexattr = generic_removexattr,
+ #endif
++ .sync_flags = ext3_sync_flags,
+ };
+
+ struct inode_operations ext3_fast_symlink_inode_operations = {
+@@ -51,4 +52,5 @@ struct inode_operations ext3_fast_symlin
+ .listxattr = ext3_listxattr,
+ .removexattr = generic_removexattr,
+ #endif
++ .sync_flags = ext3_sync_flags,
+ };
+diff -NurpP --minimal linux-2.6.20.4/fs/ext3/xattr.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext3/xattr.c
+--- linux-2.6.20.4/fs/ext3/xattr.c 2007-02-06 03:01:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext3/xattr.c 2007-02-06 03:05:22 +0100
+@@ -58,6 +58,7 @@
+ #include <linux/mbcache.h>
+ #include <linux/quotaops.h>
+ #include <linux/rwsem.h>
++#include <linux/vs_dlimit.h>
+ #include "xattr.h"
+ #include "acl.h"
+
+@@ -492,6 +493,7 @@ ext3_xattr_release_block(handle_t *handl
+ ext3_journal_dirty_metadata(handle, bh);
+ if (IS_SYNC(inode))
+ handle->h_sync = 1;
++ DLIMIT_FREE_BLOCK(inode, 1);
+ DQUOT_FREE_BLOCK(inode, 1);
+ unlock_buffer(bh);
+ ea_bdebug(bh, "refcount now=%d; releasing",
+@@ -760,11 +762,14 @@ inserted:
+ if (new_bh == bs->bh)
+ ea_bdebug(new_bh, "keeping");
+ else {
++ error = -ENOSPC;
++ if (DLIMIT_ALLOC_BLOCK(inode, 1))
++ goto cleanup;
+ /* The old block is released after updating
+ the inode. */
+ error = -EDQUOT;
+ if (DQUOT_ALLOC_BLOCK(inode, 1))
+- goto cleanup;
++ goto cleanup_dlimit;
+ error = ext3_journal_get_write_access(handle,
+ new_bh);
+ if (error)
+@@ -841,6 +846,8 @@ cleanup:
+
+ cleanup_dquot:
+ DQUOT_FREE_BLOCK(inode, 1);
++cleanup_dlimit:
++ DLIMIT_FREE_BLOCK(inode, 1);
+ goto cleanup;
+
+ bad_block:
+diff -NurpP --minimal linux-2.6.20.4/fs/ext4/balloc.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext4/balloc.c
+--- linux-2.6.20.4/fs/ext4/balloc.c 2007-02-06 03:01:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext4/balloc.c 2007-02-06 03:05:22 +0100
+@@ -19,6 +19,8 @@
+ #include <linux/ext4_jbd2.h>
+ #include <linux/quotaops.h>
+ #include <linux/buffer_head.h>
++#include <linux/vs_dlimit.h>
++#include <linux/vs_tag.h>
+
+ /*
+ * balloc.c contains the blocks allocation and deallocation routines
+@@ -630,8 +632,10 @@ void ext4_free_blocks(handle_t *handle,
+ return;
+ }
+ ext4_free_blocks_sb(handle, sb, block, count, &dquot_freed_blocks);
+- if (dquot_freed_blocks)
++ if (dquot_freed_blocks) {
++ DLIMIT_FREE_BLOCK(inode, dquot_freed_blocks);
+ DQUOT_FREE_BLOCK(inode, dquot_freed_blocks);
++ }
+ return;
+ }
+
+@@ -1370,18 +1374,33 @@ out:
+ *
+ * Check if filesystem has at least 1 free block available for allocation.
+ */
+-static int ext4_has_free_blocks(struct ext4_sb_info *sbi)
++static int ext4_has_free_blocks(struct super_block *sb)
+ {
++ struct ext4_sb_info *sbi = EXT4_SB(sb);
+ ext4_fsblk_t free_blocks, root_blocks;
++ int cond;
+
+ free_blocks = percpu_counter_read_positive(&sbi->s_freeblocks_counter);
+ root_blocks = ext4_r_blocks_count(sbi->s_es);
+- if (free_blocks < root_blocks + 1 && !capable(CAP_SYS_RESOURCE) &&
++
++ vxdprintk(VXD_CBIT(dlim, 3),
++ "ext4_has_free_blocks(%p): free=%llu, root=%llu",
++ sb, free_blocks, root_blocks);
++
++ DLIMIT_ADJUST_BLOCK(sb, dx_current_tag(), &free_blocks, &root_blocks);
++
++ cond = (free_blocks < root_blocks + 1 &&
++ !capable(CAP_SYS_RESOURCE) &&
+ sbi->s_resuid != current->fsuid &&
+- (sbi->s_resgid == 0 || !in_group_p (sbi->s_resgid))) {
+- return 0;
+- }
+- return 1;
++ (sbi->s_resgid == 0 || !in_group_p (sbi->s_resgid)));
++
++ vxdprintk(VXD_CBIT(dlim, 3),
++ "ext4_has_free_blocks(%p): %llu<%llu+1, %c, %u!=%u r=%d",
++ sb, free_blocks, root_blocks,
++ !capable(CAP_SYS_RESOURCE)?'1':'0',
++ sbi->s_resuid, current->fsuid, cond?0:1);
++
++ return (cond ? 0 : 1);
+ }
+
+ /**
+@@ -1398,7 +1417,7 @@ static int ext4_has_free_blocks(struct e
+ */
+ int ext4_should_retry_alloc(struct super_block *sb, int *retries)
+ {
+- if (!ext4_has_free_blocks(EXT4_SB(sb)) || (*retries)++ > 3)
++ if (!ext4_has_free_blocks(sb) || (*retries)++ > 3)
+ return 0;
+
+ jbd_debug(1, "%s: retrying operation after ENOSPC\n", sb->s_id);
+@@ -1461,6 +1480,8 @@ ext4_fsblk_t ext4_new_blocks(handle_t *h
+ *errp = -EDQUOT;
+ return 0;
+ }
++ if (DLIMIT_ALLOC_BLOCK(inode, 1))
++ goto out_dlimit;
+
+ sbi = EXT4_SB(sb);
+ es = EXT4_SB(sb)->s_es;
+@@ -1477,7 +1498,7 @@ ext4_fsblk_t ext4_new_blocks(handle_t *h
+ if (block_i && ((windowsz = block_i->rsv_window_node.rsv_goal_size) > 0))
+ my_rsv = &block_i->rsv_window_node;
+
+- if (!ext4_has_free_blocks(sbi)) {
++ if (!ext4_has_free_blocks(sb)) {
+ *errp = -ENOSPC;
+ goto out;
+ }
+@@ -1667,6 +1688,9 @@ allocated:
+ io_error:
+ *errp = -EIO;
+ out:
++ if (!performed_allocation)
++ DLIMIT_FREE_BLOCK(inode, 1);
++out_dlimit:
+ if (fatal) {
+ *errp = fatal;
+ ext4_std_error(sb, fatal);
+diff -NurpP --minimal linux-2.6.20.4/fs/ext4/file.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext4/file.c
+--- linux-2.6.20.4/fs/ext4/file.c 2007-02-06 03:01:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext4/file.c 2007-02-06 03:05:22 +0100
+@@ -121,6 +121,7 @@ const struct file_operations ext4_file_o
+ .release = ext4_release_file,
+ .fsync = ext4_sync_file,
+ .sendfile = generic_file_sendfile,
++ .sendpage = generic_file_sendpage,
+ .splice_read = generic_file_splice_read,
+ .splice_write = generic_file_splice_write,
+ };
+@@ -135,5 +136,6 @@ struct inode_operations ext4_file_inode_
+ .removexattr = generic_removexattr,
+ #endif
+ .permission = ext4_permission,
++ .sync_flags = ext4_sync_flags,
+ };
+
+diff -NurpP --minimal linux-2.6.20.4/fs/ext4/ialloc.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext4/ialloc.c
+--- linux-2.6.20.4/fs/ext4/ialloc.c 2006-11-30 21:19:20 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext4/ialloc.c 2007-02-06 03:05:22 +0100
+@@ -24,6 +24,8 @@
+ #include <linux/random.h>
+ #include <linux/bitops.h>
+ #include <linux/blkdev.h>
++#include <linux/vs_dlimit.h>
++#include <linux/vs_tag.h>
+ #include <asm/byteorder.h>
+
+ #include "xattr.h"
+@@ -127,6 +129,7 @@ void ext4_free_inode (handle_t *handle,
+ ext4_xattr_delete_inode(handle, inode);
+ DQUOT_FREE_INODE(inode);
+ DQUOT_DROP(inode);
++ DLIMIT_FREE_INODE(inode);
+
+ is_directory = S_ISDIR(inode->i_mode);
+
+@@ -448,6 +451,12 @@ struct inode *ext4_new_inode(handle_t *h
+ inode = new_inode(sb);
+ if (!inode)
+ return ERR_PTR(-ENOMEM);
++
++ inode->i_tag = dx_current_fstag(sb);
++ if (DLIMIT_ALLOC_INODE(inode)) {
++ err = -ENOSPC;
++ goto out_dlimit;
++ }
+ ei = EXT4_I(inode);
+
+ sbi = EXT4_SB(sb);
+@@ -569,7 +578,8 @@ got:
+ ei->i_dir_start_lookup = 0;
+ ei->i_disksize = 0;
+
+- ei->i_flags = EXT4_I(dir)->i_flags & ~EXT4_INDEX_FL;
++ ei->i_flags = EXT4_I(dir)->i_flags &
++ ~(EXT4_INDEX_FL|EXT4_IUNLINK_FL|EXT4_BARRIER_FL);
+ if (S_ISLNK(mode))
+ ei->i_flags &= ~(EXT4_IMMUTABLE_FL|EXT4_APPEND_FL);
+ /* dirsync only applies to directories */
+@@ -635,6 +645,8 @@ got:
+ fail:
+ ext4_std_error(sb, err);
+ out:
++ DLIMIT_FREE_INODE(inode);
++out_dlimit:
+ iput(inode);
+ ret = ERR_PTR(err);
+ really_out:
+@@ -646,6 +658,7 @@ fail_free_drop:
+
+ fail_drop:
+ DQUOT_DROP(inode);
++ DLIMIT_FREE_INODE(inode);
+ inode->i_flags |= S_NOQUOTA;
+ inode->i_nlink = 0;
+ iput(inode);
+diff -NurpP --minimal linux-2.6.20.4/fs/ext4/inode.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext4/inode.c
+--- linux-2.6.20.4/fs/ext4/inode.c 2007-02-06 03:01:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext4/inode.c 2007-02-06 03:05:22 +0100
+@@ -37,6 +37,7 @@
+ #include <linux/mpage.h>
+ #include <linux/uio.h>
+ #include <linux/bio.h>
++#include <linux/vs_tag.h>
+ #include "xattr.h"
+ #include "acl.h"
+
+@@ -2310,7 +2311,7 @@ void ext4_truncate(struct inode *inode)
+ return;
+ if (ext4_inode_is_fast_symlink(inode))
+ return;
+- if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
++ if (IS_APPEND(inode) || IS_IXORUNLINK(inode))
+ return;
+
+ /*
+@@ -2636,19 +2637,65 @@ void ext4_set_inode_flags(struct inode *
+ {
+ unsigned int flags = EXT4_I(inode)->i_flags;
+
+- inode->i_flags &= ~(S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC);
++ inode->i_flags &= ~(S_IMMUTABLE | S_IUNLINK | S_BARRIER |
++ S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC);
++
++ if (flags & EXT4_IMMUTABLE_FL)
++ inode->i_flags |= S_IMMUTABLE;
++ if (flags & EXT4_IUNLINK_FL)
++ inode->i_flags |= S_IUNLINK;
++ if (flags & EXT4_BARRIER_FL)
++ inode->i_flags |= S_BARRIER;
++
+ if (flags & EXT4_SYNC_FL)
+ inode->i_flags |= S_SYNC;
+ if (flags & EXT4_APPEND_FL)
+ inode->i_flags |= S_APPEND;
+- if (flags & EXT4_IMMUTABLE_FL)
+- inode->i_flags |= S_IMMUTABLE;
+ if (flags & EXT4_NOATIME_FL)
+ inode->i_flags |= S_NOATIME;
+ if (flags & EXT4_DIRSYNC_FL)
+ inode->i_flags |= S_DIRSYNC;
+ }
+
++int ext4_sync_flags(struct inode *inode)
++{
++ unsigned int oldflags, newflags;
++ int err = 0;
++
++ oldflags = EXT4_I(inode)->i_flags;
++ newflags = oldflags & ~(EXT4_IMMUTABLE_FL |
++ EXT4_IUNLINK_FL | EXT4_BARRIER_FL);
++
++ if (IS_IMMUTABLE(inode))
++ newflags |= EXT4_IMMUTABLE_FL;
++ if (IS_IUNLINK(inode))
++ newflags |= EXT4_IUNLINK_FL;
++ if (IS_BARRIER(inode))
++ newflags |= EXT4_BARRIER_FL;
++
++ if (oldflags ^ newflags) {
++ handle_t *handle;
++ struct ext4_iloc iloc;
++
++ handle = ext4_journal_start(inode, 1);
++ if (IS_ERR(handle))
++ return PTR_ERR(handle);
++ if (IS_SYNC(inode))
++ handle->h_sync = 1;
++ err = ext4_reserve_inode_write(handle, inode, &iloc);
++ if (err)
++ goto flags_err;
++
++ EXT4_I(inode)->i_flags = newflags;
++ inode->i_ctime = CURRENT_TIME;
++
++ err = ext4_mark_iloc_dirty(handle, inode, &iloc);
++ flags_err:
++ ext4_journal_stop(handle);
++ }
++ return err;
++}
++
+ void ext4_read_inode(struct inode * inode)
+ {
+ struct ext4_iloc iloc;
+@@ -2656,6 +2703,8 @@ void ext4_read_inode(struct inode * inod
+ struct ext4_inode_info *ei = EXT4_I(inode);
+ struct buffer_head *bh;
+ int block;
++ uid_t uid;
++ gid_t gid;
+
+ #ifdef CONFIG_EXT4DEV_FS_POSIX_ACL
+ ei->i_acl = EXT4_ACL_NOT_CACHED;
+@@ -2668,12 +2717,17 @@ void ext4_read_inode(struct inode * inod
+ bh = iloc.bh;
+ raw_inode = ext4_raw_inode(&iloc);
+ inode->i_mode = le16_to_cpu(raw_inode->i_mode);
+- inode->i_uid = (uid_t)le16_to_cpu(raw_inode->i_uid_low);
+- inode->i_gid = (gid_t)le16_to_cpu(raw_inode->i_gid_low);
++ uid = (uid_t)le16_to_cpu(raw_inode->i_uid_low);
++ gid = (gid_t)le16_to_cpu(raw_inode->i_gid_low);
+ if(!(test_opt (inode->i_sb, NO_UID32))) {
+- inode->i_uid |= le16_to_cpu(raw_inode->i_uid_high) << 16;
+- inode->i_gid |= le16_to_cpu(raw_inode->i_gid_high) << 16;
++ uid |= le16_to_cpu(raw_inode->i_uid_high) << 16;
++ gid |= le16_to_cpu(raw_inode->i_gid_high) << 16;
+ }
++ inode->i_uid = INOTAG_UID(DX_TAG(inode), uid, gid);
++ inode->i_gid = INOTAG_GID(DX_TAG(inode), uid, gid);
++ inode->i_tag = INOTAG_TAG(DX_TAG(inode), uid, gid,
++ le16_to_cpu(raw_inode->i_raw_tag));
++
+ inode->i_nlink = le16_to_cpu(raw_inode->i_links_count);
+ inode->i_size = le32_to_cpu(raw_inode->i_size);
+ inode->i_atime.tv_sec = le32_to_cpu(raw_inode->i_atime);
+@@ -2801,6 +2855,8 @@ static int ext4_do_update_inode(handle_t
+ struct ext4_inode *raw_inode = ext4_raw_inode(iloc);
+ struct ext4_inode_info *ei = EXT4_I(inode);
+ struct buffer_head *bh = iloc->bh;
++ uid_t uid = TAGINO_UID(DX_TAG(inode), inode->i_uid, inode->i_tag);
++ gid_t gid = TAGINO_GID(DX_TAG(inode), inode->i_gid, inode->i_tag);
+ int err = 0, rc, block;
+
+ /* For fields not not tracking in the in-memory inode,
+@@ -2810,29 +2866,32 @@ static int ext4_do_update_inode(handle_t
+
+ raw_inode->i_mode = cpu_to_le16(inode->i_mode);
+ if(!(test_opt(inode->i_sb, NO_UID32))) {
+- raw_inode->i_uid_low = cpu_to_le16(low_16_bits(inode->i_uid));
+- raw_inode->i_gid_low = cpu_to_le16(low_16_bits(inode->i_gid));
++ raw_inode->i_uid_low = cpu_to_le16(low_16_bits(uid));
++ raw_inode->i_gid_low = cpu_to_le16(low_16_bits(gid));
+ /*
+ * Fix up interoperability with old kernels. Otherwise, old inodes get
+ * re-used with the upper 16 bits of the uid/gid intact
+ */
+ if(!ei->i_dtime) {
+ raw_inode->i_uid_high =
+- cpu_to_le16(high_16_bits(inode->i_uid));
++ cpu_to_le16(high_16_bits(uid));
+ raw_inode->i_gid_high =
+- cpu_to_le16(high_16_bits(inode->i_gid));
++ cpu_to_le16(high_16_bits(gid));
+ } else {
+ raw_inode->i_uid_high = 0;
+ raw_inode->i_gid_high = 0;
+ }
+ } else {
+ raw_inode->i_uid_low =
+- cpu_to_le16(fs_high2lowuid(inode->i_uid));
++ cpu_to_le16(fs_high2lowuid(uid));
+ raw_inode->i_gid_low =
+- cpu_to_le16(fs_high2lowgid(inode->i_gid));
++ cpu_to_le16(fs_high2lowgid(gid));
+ raw_inode->i_uid_high = 0;
+ raw_inode->i_gid_high = 0;
+ }
++#ifdef CONFIG_TAGGING_INTERN
++ raw_inode->i_raw_tag = cpu_to_le16(inode->i_tag);
++#endif
+ raw_inode->i_links_count = cpu_to_le16(inode->i_nlink);
+ raw_inode->i_size = cpu_to_le32(ei->i_disksize);
+ raw_inode->i_atime = cpu_to_le32(inode->i_atime.tv_sec);
+@@ -2989,7 +3048,8 @@ int ext4_setattr(struct dentry *dentry,
+ return error;
+
+ if ((ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid) ||
+- (ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid)) {
++ (ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid) ||
++ (ia_valid & ATTR_TAG && attr->ia_tag != inode->i_tag)) {
+ handle_t *handle;
+
+ /* (user+group)*(old+new) structure, inode write (sb,
+@@ -3011,6 +3071,8 @@ int ext4_setattr(struct dentry *dentry,
+ inode->i_uid = attr->ia_uid;
+ if (attr->ia_valid & ATTR_GID)
+ inode->i_gid = attr->ia_gid;
++ if ((attr->ia_valid & ATTR_TAG) && IS_TAGGED(inode))
++ inode->i_tag = attr->ia_tag;
+ error = ext4_mark_inode_dirty(handle, inode);
+ ext4_journal_stop(handle);
+ }
+diff -NurpP --minimal linux-2.6.20.4/fs/ext4/ioctl.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext4/ioctl.c
+--- linux-2.6.20.4/fs/ext4/ioctl.c 2007-02-06 03:01:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext4/ioctl.c 2007-02-06 03:05:22 +0100
+@@ -8,6 +8,7 @@
+ */
+
+ #include <linux/fs.h>
++#include <linux/mount.h>
+ #include <linux/jbd2.h>
+ #include <linux/capability.h>
+ #include <linux/ext4_fs.h>
+@@ -15,6 +16,7 @@
+ #include <linux/time.h>
+ #include <linux/compat.h>
+ #include <linux/smp_lock.h>
++#include <linux/vs_tag.h>
+ #include <asm/uaccess.h>
+
+ int ext4_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
+@@ -37,7 +39,8 @@ int ext4_ioctl (struct inode * inode, st
+ unsigned int oldflags;
+ unsigned int jflag;
+
+- if (IS_RDONLY(inode))
++ if (IS_RDONLY(inode) ||
++ (filp && MNT_IS_RDONLY(filp->f_vfsmnt)))
+ return -EROFS;
+
+ if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
+@@ -61,7 +64,9 @@ int ext4_ioctl (struct inode * inode, st
+ *
+ * This test looks nicer. Thanks to Pauline Middelink
+ */
+- if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) {
++ if ((oldflags & EXT4_IMMUTABLE_FL) ||
++ ((flags ^ oldflags) & (EXT4_APPEND_FL |
++ EXT4_IMMUTABLE_FL | EXT4_IUNLINK_FL))) {
+ if (!capable(CAP_LINUX_IMMUTABLE)) {
+ mutex_unlock(&inode->i_mutex);
+ return -EPERM;
+@@ -123,7 +128,8 @@ flags_err:
+
+ if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
+ return -EPERM;
+- if (IS_RDONLY(inode))
++ if (IS_RDONLY(inode) ||
++ (filp && MNT_IS_RDONLY(filp->f_vfsmnt)))
+ return -EROFS;
+ if (get_user(generation, (int __user *) arg))
+ return -EFAULT;
+@@ -177,7 +183,8 @@ flags_err:
+ if (!test_opt(inode->i_sb, RESERVATION) ||!S_ISREG(inode->i_mode))
+ return -ENOTTY;
+
+- if (IS_RDONLY(inode))
++ if (IS_RDONLY(inode) ||
++ (filp && MNT_IS_RDONLY(filp->f_vfsmnt)))
+ return -EROFS;
+
+ if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
+@@ -212,7 +219,8 @@ flags_err:
+ if (!capable(CAP_SYS_RESOURCE))
+ return -EPERM;
+
+- if (IS_RDONLY(inode))
++ if (IS_RDONLY(inode) ||
++ (filp && MNT_IS_RDONLY(filp->f_vfsmnt)))
+ return -EROFS;
+
+ if (get_user(n_blocks_count, (__u32 __user *)arg))
+@@ -233,7 +241,8 @@ flags_err:
+ if (!capable(CAP_SYS_RESOURCE))
+ return -EPERM;
+
+- if (IS_RDONLY(inode))
++ if (IS_RDONLY(inode) ||
++ (filp && MNT_IS_RDONLY(filp->f_vfsmnt)))
+ return -EROFS;
+
+ if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg,
+@@ -248,6 +257,39 @@ flags_err:
+ return err;
+ }
+
++#if defined(CONFIG_VSERVER_LEGACY) && !defined(CONFIG_TAGGING_NONE)
++ case EXT4_IOC_SETTAG: {
++ handle_t *handle;
++ struct ext4_iloc iloc;
++ int tag;
++ int err;
++
++ /* fixme: if stealth, return -ENOTTY */
++ if (!capable(CAP_CONTEXT))
++ return -EPERM;
++ if (IS_RDONLY(inode))
++ return -EROFS;
++ if (!(inode->i_sb->s_flags & MS_TAGGED))
++ return -ENOSYS;
++ if (get_user(tag, (int __user *) arg))
++ return -EFAULT;
++
++ handle = ext4_journal_start(inode, 1);
++ if (IS_ERR(handle))
++ return PTR_ERR(handle);
++ err = ext4_reserve_inode_write(handle, inode, &iloc);
++ if (err)
++ return err;
++
++ inode->i_tag = (tag & 0xFFFF);
++ inode->i_ctime = CURRENT_TIME;
++
++ err = ext4_mark_iloc_dirty(handle, inode, &iloc);
++ ext4_journal_stop(handle);
++ return err;
++ }
++#endif
++
+ default:
+ return -ENOTTY;
+ }
+diff -NurpP --minimal linux-2.6.20.4/fs/ext4/namei.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext4/namei.c
+--- linux-2.6.20.4/fs/ext4/namei.c 2007-02-06 03:01:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext4/namei.c 2007-02-06 03:05:22 +0100
+@@ -37,6 +37,7 @@
+ #include <linux/buffer_head.h>
+ #include <linux/bio.h>
+ #include <linux/smp_lock.h>
++#include <linux/vs_tag.h>
+
+ #include "namei.h"
+ #include "xattr.h"
+@@ -1017,6 +1018,7 @@ static struct dentry *ext4_lookup(struct
+
+ if (!inode)
+ return ERR_PTR(-EACCES);
++ dx_propagate_tag(nd, inode);
+ }
+ return d_splice_alias(inode, dentry);
+ }
+@@ -2390,6 +2392,7 @@ struct inode_operations ext4_dir_inode_o
+ .removexattr = generic_removexattr,
+ #endif
+ .permission = ext4_permission,
++ .sync_flags = ext4_sync_flags,
+ };
+
+ struct inode_operations ext4_special_inode_operations = {
+@@ -2401,4 +2404,5 @@ struct inode_operations ext4_special_ino
+ .removexattr = generic_removexattr,
+ #endif
+ .permission = ext4_permission,
++ .sync_flags = ext4_sync_flags,
+ };
+diff -NurpP --minimal linux-2.6.20.4/fs/ext4/super.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext4/super.c
+--- linux-2.6.20.4/fs/ext4/super.c 2007-03-10 20:34:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext4/super.c 2007-03-10 18:57:30 +0100
+@@ -728,7 +728,7 @@ enum {
+ Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
+ Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_quota, Opt_noquota,
+ Opt_ignore, Opt_barrier, Opt_err, Opt_resize, Opt_usrquota,
+- Opt_grpquota, Opt_extents,
++ Opt_grpquota, Opt_extents, Opt_tag, Opt_notag, Opt_tagid
+ };
+
+ static match_table_t tokens = {
+@@ -779,6 +779,10 @@ static match_table_t tokens = {
+ {Opt_usrquota, "usrquota"},
+ {Opt_barrier, "barrier=%u"},
+ {Opt_extents, "extents"},
++ {Opt_tag, "tag"},
++ {Opt_notag, "notag"},
++ {Opt_tagid, "tagid=%u"},
++ {Opt_tag, "tagxid"},
+ {Opt_err, NULL},
+ {Opt_resize, "resize"},
+ };
+@@ -872,6 +876,20 @@ static int parse_options (char *options,
+ case Opt_nouid32:
+ set_opt (sbi->s_mount_opt, NO_UID32);
+ break;
++#ifndef CONFIG_TAGGING_NONE
++ case Opt_tag:
++ set_opt (sbi->s_mount_opt, TAGGED);
++ break;
++ case Opt_notag:
++ clear_opt (sbi->s_mount_opt, TAGGED);
++ break;
++#endif
++#ifdef CONFIG_PROPAGATE
++ case Opt_tagid:
++ /* use args[0] */
++ set_opt (sbi->s_mount_opt, TAGGED);
++ break;
++#endif
+ case Opt_nocheck:
+ clear_opt (sbi->s_mount_opt, CHECK);
+ break;
+@@ -1549,6 +1567,9 @@ static int ext4_fill_super (struct super
+ NULL, 0))
+ goto failed_mount;
+
++ if (EXT4_SB(sb)->s_mount_opt & EXT4_MOUNT_TAGGED)
++ sb->s_flags |= MS_TAGGED;
++
+ sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
+ ((sbi->s_mount_opt & EXT4_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
+
+@@ -2380,6 +2401,12 @@ static int ext4_remount (struct super_bl
+
+ if (sbi->s_mount_opt & EXT4_MOUNT_ABORT)
+ ext4_abort(sb, __FUNCTION__, "Abort forced by user");
++ if ((sbi->s_mount_opt & EXT4_MOUNT_TAGGED) &&
++ !(sb->s_flags & MS_TAGGED)) {
++ printk("EXT4-fs: %s: tagging not permitted on remount.\n",
++ sb->s_id);
++ return -EINVAL;
++ }
+
+ sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
+ ((sbi->s_mount_opt & EXT4_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
+diff -NurpP --minimal linux-2.6.20.4/fs/ext4/symlink.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext4/symlink.c
+--- linux-2.6.20.4/fs/ext4/symlink.c 2006-11-30 21:19:20 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext4/symlink.c 2007-02-06 03:05:22 +0100
+@@ -40,6 +40,7 @@ struct inode_operations ext4_symlink_ino
+ .listxattr = ext4_listxattr,
+ .removexattr = generic_removexattr,
+ #endif
++ .sync_flags = ext4_sync_flags,
+ };
+
+ struct inode_operations ext4_fast_symlink_inode_operations = {
+@@ -51,4 +52,5 @@ struct inode_operations ext4_fast_symlin
+ .listxattr = ext4_listxattr,
+ .removexattr = generic_removexattr,
+ #endif
++ .sync_flags = ext4_sync_flags,
+ };
+diff -NurpP --minimal linux-2.6.20.4/fs/ext4/xattr.c linux-2.6.20.4-vs2.2.0-rc20/fs/ext4/xattr.c
+--- linux-2.6.20.4/fs/ext4/xattr.c 2007-02-06 03:01:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ext4/xattr.c 2007-02-06 03:05:22 +0100
+@@ -58,6 +58,7 @@
+ #include <linux/mbcache.h>
+ #include <linux/quotaops.h>
+ #include <linux/rwsem.h>
++#include <linux/vs_dlimit.h>
+ #include "xattr.h"
+ #include "acl.h"
+
+@@ -492,6 +493,7 @@ ext4_xattr_release_block(handle_t *handl
+ ext4_journal_dirty_metadata(handle, bh);
+ if (IS_SYNC(inode))
+ handle->h_sync = 1;
++ DLIMIT_FREE_BLOCK(inode, 1);
+ DQUOT_FREE_BLOCK(inode, 1);
+ unlock_buffer(bh);
+ ea_bdebug(bh, "refcount now=%d; releasing",
+@@ -760,11 +762,14 @@ inserted:
+ if (new_bh == bs->bh)
+ ea_bdebug(new_bh, "keeping");
+ else {
++ error = -ENOSPC;
++ if (DLIMIT_ALLOC_BLOCK(inode, 1))
++ goto cleanup;
+ /* The old block is released after updating
+ the inode. */
+ error = -EDQUOT;
+ if (DQUOT_ALLOC_BLOCK(inode, 1))
+- goto cleanup;
++ goto cleanup_dlimit;
+ error = ext4_journal_get_write_access(handle,
+ new_bh);
+ if (error)
+@@ -841,6 +846,8 @@ cleanup:
+
+ cleanup_dquot:
+ DQUOT_FREE_BLOCK(inode, 1);
++cleanup_dlimit:
++ DLIMIT_FREE_BLOCK(inode, 1);
+ goto cleanup;
+
+ bad_block:
+diff -NurpP --minimal linux-2.6.20.4/fs/fcntl.c linux-2.6.20.4-vs2.2.0-rc20/fs/fcntl.c
+--- linux-2.6.20.4/fs/fcntl.c 2007-02-06 03:01:18 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/fcntl.c 2007-02-06 03:05:22 +0100
+@@ -18,6 +18,7 @@
+ #include <linux/ptrace.h>
+ #include <linux/signal.h>
+ #include <linux/rcupdate.h>
++#include <linux/vs_limit.h>
+
+ #include <asm/poll.h>
+ #include <asm/siginfo.h>
+@@ -84,6 +85,8 @@ repeat:
+ error = -EMFILE;
+ if (newfd >= current->signal->rlim[RLIMIT_NOFILE].rlim_cur)
+ goto out;
++ if (!vx_files_avail(1))
++ goto out;
+
+ error = expand_files(files, newfd);
+ if (error < 0)
+@@ -124,6 +127,7 @@ static int dupfd(struct file *file, unsi
+ FD_SET(fd, fdt->open_fds);
+ FD_CLR(fd, fdt->close_on_exec);
+ spin_unlock(&files->file_lock);
++ vx_openfd_inc(fd);
+ fd_install(fd, file);
+ } else {
+ spin_unlock(&files->file_lock);
+@@ -176,6 +180,9 @@ asmlinkage long sys_dup2(unsigned int ol
+
+ if (tofree)
+ filp_close(tofree, files);
++ else
++ vx_openfd_inc(newfd); /* fd was unused */
++
+ err = newfd;
+ out:
+ return err;
+diff -NurpP --minimal linux-2.6.20.4/fs/file_table.c linux-2.6.20.4-vs2.2.0-rc20/fs/file_table.c
+--- linux-2.6.20.4/fs/file_table.c 2007-02-06 03:01:19 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/file_table.c 2007-02-06 03:05:22 +0100
+@@ -21,6 +21,8 @@
+ #include <linux/fsnotify.h>
+ #include <linux/sysctl.h>
+ #include <linux/percpu_counter.h>
++#include <linux/vs_limit.h>
++#include <linux/vs_context.h>
+
+ #include <asm/atomic.h>
+
+@@ -120,6 +122,8 @@ struct file *get_empty_filp(void)
+ f->f_gid = tsk->fsgid;
+ eventpoll_init_file(f);
+ /* f->f_version: 0 */
++ f->f_xid = vx_current_xid();
++ vx_files_inc(f);
+ return f;
+
+ over:
+@@ -175,6 +179,8 @@ void fastcall __fput(struct file *file)
+ if (file->f_mode & FMODE_WRITE)
+ put_write_access(inode);
+ put_pid(file->f_owner.pid);
++ vx_files_dec(file);
++ file->f_xid = 0;
+ file_kill(file);
+ file->f_path.dentry = NULL;
+ file->f_path.mnt = NULL;
+@@ -240,6 +246,8 @@ void put_filp(struct file *file)
+ {
+ if (atomic_dec_and_test(&file->f_count)) {
+ security_file_free(file);
++ vx_files_dec(file);
++ file->f_xid = 0;
+ file_kill(file);
+ file_free(file);
+ }
+diff -NurpP --minimal linux-2.6.20.4/fs/hfsplus/ioctl.c linux-2.6.20.4-vs2.2.0-rc20/fs/hfsplus/ioctl.c
+--- linux-2.6.20.4/fs/hfsplus/ioctl.c 2006-11-30 21:19:25 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/hfsplus/ioctl.c 2007-02-06 03:05:22 +0100
+@@ -16,6 +16,7 @@
+ #include <linux/fs.h>
+ #include <linux/sched.h>
+ #include <linux/xattr.h>
++#include <linux/mount.h>
+ #include <asm/uaccess.h>
+ #include "hfsplus_fs.h"
+
+@@ -35,7 +36,8 @@ int hfsplus_ioctl(struct inode *inode, s
+ flags |= FS_NODUMP_FL; /* EXT2_NODUMP_FL */
+ return put_user(flags, (int __user *)arg);
+ case HFSPLUS_IOC_EXT2_SETFLAGS: {
+- if (IS_RDONLY(inode))
++ if (IS_RDONLY(inode) ||
++ (filp && MNT_IS_RDONLY(filp->f_vfsmnt)))
+ return -EROFS;
+
+ if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
+diff -NurpP --minimal linux-2.6.20.4/fs/inode.c linux-2.6.20.4-vs2.2.0-rc20/fs/inode.c
+--- linux-2.6.20.4/fs/inode.c 2007-02-06 03:01:22 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/inode.c 2007-02-06 03:05:22 +0100
+@@ -115,6 +115,9 @@ static struct inode *alloc_inode(struct
+ struct address_space * const mapping = &inode->i_data;
+
+ inode->i_sb = sb;
++
++ /* essential because of inode slab reuse */
++ inode->i_tag = 0;
+ inode->i_blkbits = sb->s_blocksize_bits;
+ inode->i_flags = 0;
+ atomic_set(&inode->i_count, 1);
+@@ -233,6 +236,8 @@ void __iget(struct inode * inode)
+ inodes_stat.nr_unused--;
+ }
+
++EXPORT_SYMBOL_GPL(__iget);
++
+ /**
+ * clear_inode - clear an inode
+ * @inode: inode to clear
+diff -NurpP --minimal linux-2.6.20.4/fs/ioctl.c linux-2.6.20.4-vs2.2.0-rc20/fs/ioctl.c
+--- linux-2.6.20.4/fs/ioctl.c 2007-02-06 03:01:22 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ioctl.c 2007-02-06 03:05:22 +0100
+@@ -12,10 +12,19 @@
+ #include <linux/fs.h>
+ #include <linux/security.h>
+ #include <linux/module.h>
++#include <linux/proc_fs.h>
++#include <linux/vserver/inode.h>
++#include <linux/vs_tag.h>
+
+ #include <asm/uaccess.h>
+ #include <asm/ioctls.h>
+
++
++#ifdef CONFIG_VSERVER_LEGACY
++extern int vx_proc_ioctl(struct inode *, struct file *,
++ unsigned int, unsigned long);
++#endif
++
+ static long do_ioctl(struct file *filp, unsigned int cmd,
+ unsigned long arg)
+ {
+@@ -146,6 +155,48 @@ int vfs_ioctl(struct file *filp, unsigne
+ else
+ error = -ENOTTY;
+ break;
++#ifdef CONFIG_VSERVER_LEGACY
++#ifndef CONFIG_TAGGING_NONE
++ case FIOC_GETTAG: {
++ struct inode *inode = filp->f_dentry->d_inode;
++
++ /* fixme: if stealth, return -ENOTTY */
++ error = -EPERM;
++ if (capable(CAP_CONTEXT))
++ error = put_user(inode->i_tag, (int __user *) arg);
++ break;
++ }
++ case FIOC_SETTAG: {
++ struct inode *inode = filp->f_dentry->d_inode;
++ int tag;
++
++ /* fixme: if stealth, return -ENOTTY */
++ error = -EPERM;
++ if (!capable(CAP_CONTEXT))
++ break;
++ error = -EROFS;
++ if (IS_RDONLY(inode))
++ break;
++ error = -ENOSYS;
++ if (!(inode->i_sb->s_flags & MS_TAGGED))
++ break;
++ error = -EFAULT;
++ if (get_user(tag, (int __user *) arg))
++ break;
++ error = 0;
++ inode->i_tag = (tag & 0xFFFF);
++ inode->i_ctime = CURRENT_TIME;
++ mark_inode_dirty(inode);
++ break;
++ }
++#endif
++ case FIOC_GETXFLG:
++ case FIOC_SETXFLG:
++ error = -ENOTTY;
++ if (filp->f_dentry->d_inode->i_sb->s_magic == PROC_SUPER_MAGIC)
++ error = vx_proc_ioctl(filp->f_dentry->d_inode, filp, cmd, arg);
++ break;
++#endif
+ default:
+ if (S_ISREG(filp->f_path.dentry->d_inode->i_mode))
+ error = file_ioctl(filp, cmd, arg);
+diff -NurpP --minimal linux-2.6.20.4/fs/ioprio.c linux-2.6.20.4-vs2.2.0-rc20/fs/ioprio.c
+--- linux-2.6.20.4/fs/ioprio.c 2006-11-30 21:19:25 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ioprio.c 2007-02-06 03:05:22 +0100
+@@ -25,6 +25,7 @@
+ #include <linux/capability.h>
+ #include <linux/syscalls.h>
+ #include <linux/security.h>
++#include <linux/vs_base.h>
+
+ static int set_task_ioprio(struct task_struct *task, int ioprio)
+ {
+@@ -109,7 +110,7 @@ asmlinkage long sys_ioprio_set(int which
+ if (!who)
+ user = current->user;
+ else
+- user = find_user(who);
++ user = find_user(vx_current_xid(), who);
+
+ if (!user)
+ break;
+@@ -197,7 +198,7 @@ asmlinkage long sys_ioprio_get(int which
+ if (!who)
+ user = current->user;
+ else
+- user = find_user(who);
++ user = find_user(vx_current_xid(), who);
+
+ if (!user)
+ break;
+diff -NurpP --minimal linux-2.6.20.4/fs/jfs/acl.c linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/acl.c
+--- linux-2.6.20.4/fs/jfs/acl.c 2006-11-30 21:19:25 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/acl.c 2007-02-06 03:05:22 +0100
+@@ -232,7 +232,8 @@ int jfs_setattr(struct dentry *dentry, s
+ return rc;
+
+ if ((iattr->ia_valid & ATTR_UID && iattr->ia_uid != inode->i_uid) ||
+- (iattr->ia_valid & ATTR_GID && iattr->ia_gid != inode->i_gid)) {
++ (iattr->ia_valid & ATTR_GID && iattr->ia_gid != inode->i_gid) ||
++ (iattr->ia_valid & ATTR_TAG && iattr->ia_tag != inode->i_tag)) {
+ if (DQUOT_TRANSFER(inode, iattr))
+ return -EDQUOT;
+ }
+diff -NurpP --minimal linux-2.6.20.4/fs/jfs/file.c linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/file.c
+--- linux-2.6.20.4/fs/jfs/file.c 2006-11-30 21:19:25 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/file.c 2007-02-06 03:05:22 +0100
+@@ -98,6 +98,7 @@ struct inode_operations jfs_file_inode_o
+ .setattr = jfs_setattr,
+ .permission = jfs_permission,
+ #endif
++ .sync_flags = jfs_sync_flags,
+ };
+
+ const struct file_operations jfs_file_operations = {
+@@ -109,6 +110,7 @@ const struct file_operations jfs_file_op
+ .aio_write = generic_file_aio_write,
+ .mmap = generic_file_mmap,
+ .sendfile = generic_file_sendfile,
++ .sendpage = generic_file_sendpage,
+ .splice_read = generic_file_splice_read,
+ .splice_write = generic_file_splice_write,
+ .fsync = jfs_fsync,
+diff -NurpP --minimal linux-2.6.20.4/fs/jfs/inode.c linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/inode.c
+--- linux-2.6.20.4/fs/jfs/inode.c 2006-11-30 21:19:25 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/inode.c 2007-02-06 03:05:22 +0100
+@@ -22,6 +22,7 @@
+ #include <linux/buffer_head.h>
+ #include <linux/pagemap.h>
+ #include <linux/quotaops.h>
++#include <linux/vs_dlimit.h>
+ #include "jfs_incore.h"
+ #include "jfs_inode.h"
+ #include "jfs_filsys.h"
+@@ -144,6 +145,7 @@ void jfs_delete_inode(struct inode *inod
+ DQUOT_INIT(inode);
+ DQUOT_FREE_INODE(inode);
+ DQUOT_DROP(inode);
++ DLIMIT_FREE_INODE(inode);
+ }
+
+ clear_inode(inode);
+diff -NurpP --minimal linux-2.6.20.4/fs/jfs/ioctl.c linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/ioctl.c
+--- linux-2.6.20.4/fs/jfs/ioctl.c 2007-02-06 03:01:24 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/ioctl.c 2007-02-06 03:13:33 +0100
+@@ -10,6 +10,7 @@
+ #include <linux/capability.h>
+ #include <linux/time.h>
+ #include <linux/sched.h>
++#include <linux/mount.h>
+ #include <asm/current.h>
+ #include <asm/uaccess.h>
+
+@@ -65,7 +66,8 @@ int jfs_ioctl(struct inode * inode, stru
+ case JFS_IOC_SETFLAGS: {
+ unsigned int oldflags;
+
+- if (IS_RDONLY(inode))
++ if (IS_RDONLY(inode) ||
++ (filp && MNT_IS_RDONLY(filp->f_vfsmnt)))
+ return -EROFS;
+
+ if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
+@@ -85,8 +87,8 @@ int jfs_ioctl(struct inode * inode, stru
+ * the relevant capability.
+ */
+ if ((oldflags & JFS_IMMUTABLE_FL) ||
+- ((flags ^ oldflags) &
+- (JFS_APPEND_FL | JFS_IMMUTABLE_FL))) {
++ ((flags ^ oldflags) & (JFS_APPEND_FL |
++ JFS_IMMUTABLE_FL | JFS_IUNLINK_FL))) {
+ if (!capable(CAP_LINUX_IMMUTABLE))
+ return -EPERM;
+ }
+diff -NurpP --minimal linux-2.6.20.4/fs/jfs/jfs_dinode.h linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/jfs_dinode.h
+--- linux-2.6.20.4/fs/jfs/jfs_dinode.h 2006-11-30 21:19:25 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/jfs_dinode.h 2007-02-06 03:05:22 +0100
+@@ -162,9 +162,12 @@ struct dinode {
+ #define JFS_APPEND_FL 0x01000000 /* writes to file may only append */
+ #define JFS_IMMUTABLE_FL 0x02000000 /* Immutable file */
+
+-#define JFS_FL_USER_VISIBLE 0x03F80000
++#define JFS_BARRIER_FL 0x04000000 /* Barrier for chroot() */
++#define JFS_IUNLINK_FL 0x08000000 /* Immutable unlink */
++
++#define JFS_FL_USER_VISIBLE 0x0FF80000
+ #define JFS_FL_USER_MODIFIABLE 0x03F80000
+-#define JFS_FL_INHERIT 0x03C80000
++#define JFS_FL_INHERIT 0x0BC80000
+
+ /* These are identical to EXT[23]_IOC_GETFLAGS/SETFLAGS */
+ #define JFS_IOC_GETFLAGS _IOR('f', 1, long)
+diff -NurpP --minimal linux-2.6.20.4/fs/jfs/jfs_dtree.c linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/jfs_dtree.c
+--- linux-2.6.20.4/fs/jfs/jfs_dtree.c 2007-02-06 03:01:24 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/jfs_dtree.c 2007-02-06 03:05:22 +0100
+@@ -102,6 +102,7 @@
+
+ #include <linux/fs.h>
+ #include <linux/quotaops.h>
++#include <linux/vs_dlimit.h>
+ #include "jfs_incore.h"
+ #include "jfs_superblock.h"
+ #include "jfs_filsys.h"
+@@ -383,10 +384,10 @@ static u32 add_index(tid_t tid, struct i
+ */
+ if (DQUOT_ALLOC_BLOCK(ip, sbi->nbperpage))
+ goto clean_up;
+- if (dbAlloc(ip, 0, sbi->nbperpage, &xaddr)) {
+- DQUOT_FREE_BLOCK(ip, sbi->nbperpage);
+- goto clean_up;
+- }
++ if (DLIMIT_ALLOC_BLOCK(ip, sbi->nbperpage))
++ goto clean_up_dquot;
++ if (dbAlloc(ip, 0, sbi->nbperpage, &xaddr))
++ goto clean_up_dlimit;
+
+ /*
+ * Save the table, we're going to overwrite it with the
+@@ -479,6 +480,12 @@ static u32 add_index(tid_t tid, struct i
+
+ return index;
+
++ clean_up_dlimit:
++ DLIMIT_FREE_BLOCK(ip, sbi->nbperpage);
++
++ clean_up_dquot:
++ DQUOT_FREE_BLOCK(ip, sbi->nbperpage);
++
+ clean_up:
+
+ jfs_ip->next_index--;
+@@ -952,6 +959,7 @@ static int dtSplitUp(tid_t tid,
+ struct tlock *tlck;
+ struct lv *lv;
+ int quota_allocation = 0;
++ int dlimit_allocation = 0;
+
+ /* get split page */
+ smp = split->mp;
+@@ -1036,6 +1044,12 @@ static int dtSplitUp(tid_t tid,
+ }
+ quota_allocation += n;
+
++ if (DLIMIT_ALLOC_BLOCK(ip, n)) {
++ rc = -ENOSPC;
++ goto extendOut;
++ }
++ dlimit_allocation += n;
++
+ if ((rc = dbReAlloc(sbi->ipbmap, xaddr, (s64) xlen,
+ (s64) n, &nxaddr)))
+ goto extendOut;
+@@ -1309,6 +1323,9 @@ static int dtSplitUp(tid_t tid,
+ freeKeyName:
+ kfree(key.name);
+
++ /* Rollback dlimit allocation */
++ if (rc && dlimit_allocation)
++ DLIMIT_FREE_BLOCK(ip, dlimit_allocation);
+ /* Rollback quota allocation */
+ if (rc && quota_allocation)
+ DQUOT_FREE_BLOCK(ip, quota_allocation);
+@@ -1376,6 +1393,12 @@ static int dtSplitPage(tid_t tid, struct
+ release_metapage(rmp);
+ return -EDQUOT;
+ }
++ /* Allocate blocks to dlimit. */
++ if (DLIMIT_ALLOC_BLOCK(ip, lengthPXD(pxd))) {
++ DQUOT_FREE_BLOCK(ip, lengthPXD(pxd));
++ release_metapage(rmp);
++ return -ENOSPC;
++ }
+
+ jfs_info("dtSplitPage: ip:0x%p smp:0x%p rmp:0x%p", ip, smp, rmp);
+
+@@ -1926,6 +1949,12 @@ static int dtSplitRoot(tid_t tid,
+ release_metapage(rmp);
+ return -EDQUOT;
+ }
++ /* Allocate blocks to dlimit. */
++ if (DLIMIT_ALLOC_BLOCK(ip, lengthPXD(pxd))) {
++ DQUOT_FREE_BLOCK(ip, lengthPXD(pxd));
++ release_metapage(rmp);
++ return -ENOSPC;
++ }
+
+ BT_MARK_DIRTY(rmp, ip);
+ /*
+@@ -2292,6 +2321,8 @@ static int dtDeleteUp(tid_t tid, struct
+
+ xlen = lengthPXD(&fp->header.self);
+
++ /* Free dlimit allocation. */
++ DLIMIT_FREE_BLOCK(ip, xlen);
+ /* Free quota allocation. */
+ DQUOT_FREE_BLOCK(ip, xlen);
+
+@@ -2368,6 +2399,8 @@ static int dtDeleteUp(tid_t tid, struct
+
+ xlen = lengthPXD(&p->header.self);
+
++ /* Free dlimit allocation */
++ DLIMIT_FREE_BLOCK(ip, xlen);
+ /* Free quota allocation */
+ DQUOT_FREE_BLOCK(ip, xlen);
+
+diff -NurpP --minimal linux-2.6.20.4/fs/jfs/jfs_extent.c linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/jfs_extent.c
+--- linux-2.6.20.4/fs/jfs/jfs_extent.c 2006-11-30 21:19:25 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/jfs_extent.c 2007-02-06 03:05:22 +0100
+@@ -18,6 +18,7 @@
+
+ #include <linux/fs.h>
+ #include <linux/quotaops.h>
++#include <linux/vs_dlimit.h>
+ #include "jfs_incore.h"
+ #include "jfs_inode.h"
+ #include "jfs_superblock.h"
+@@ -147,6 +148,14 @@ extAlloc(struct inode *ip, s64 xlen, s64
+ return -EDQUOT;
+ }
+
++ /* Allocate blocks to dlimit. */
++ if (DLIMIT_ALLOC_BLOCK(ip, nxlen)) {
++ DQUOT_FREE_BLOCK(ip, nxlen);
++ dbFree(ip, nxaddr, (s64) nxlen);
++ mutex_unlock(&JFS_IP(ip)->commit_mutex);
++ return -ENOSPC;
++ }
++
+ /* determine the value of the extent flag */
+ xflag = abnr ? XAD_NOTRECORDED : 0;
+
+@@ -164,6 +173,7 @@ extAlloc(struct inode *ip, s64 xlen, s64
+ */
+ if (rc) {
+ dbFree(ip, nxaddr, nxlen);
++ DLIMIT_FREE_BLOCK(ip, nxlen);
+ DQUOT_FREE_BLOCK(ip, nxlen);
+ mutex_unlock(&JFS_IP(ip)->commit_mutex);
+ return (rc);
+@@ -261,6 +271,13 @@ int extRealloc(struct inode *ip, s64 nxl
+ mutex_unlock(&JFS_IP(ip)->commit_mutex);
+ return -EDQUOT;
+ }
++ /* Allocate blocks to dlimit. */
++ if (DLIMIT_ALLOC_BLOCK(ip, nxlen)) {
++ DQUOT_FREE_BLOCK(ip, nxlen);
++ dbFree(ip, nxaddr, (s64) nxlen);
++ up(&JFS_IP(ip)->commit_sem);
++ return -ENOSPC;
++ }
+
+ delta = nxlen - xlen;
+
+@@ -297,6 +314,7 @@ int extRealloc(struct inode *ip, s64 nxl
+ /* extend the extent */
+ if ((rc = xtExtend(0, ip, xoff + xlen, (int) nextend, 0))) {
+ dbFree(ip, xaddr + xlen, delta);
++ DLIMIT_FREE_BLOCK(ip, nxlen);
+ DQUOT_FREE_BLOCK(ip, nxlen);
+ goto exit;
+ }
+@@ -308,6 +326,7 @@ int extRealloc(struct inode *ip, s64 nxl
+ */
+ if ((rc = xtTailgate(0, ip, xoff, (int) ntail, nxaddr, 0))) {
+ dbFree(ip, nxaddr, nxlen);
++ DLIMIT_FREE_BLOCK(ip, nxlen);
+ DQUOT_FREE_BLOCK(ip, nxlen);
+ goto exit;
+ }
+diff -NurpP --minimal linux-2.6.20.4/fs/jfs/jfs_filsys.h linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/jfs_filsys.h
+--- linux-2.6.20.4/fs/jfs/jfs_filsys.h 2007-02-06 03:01:24 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/jfs_filsys.h 2007-02-06 03:05:22 +0100
+@@ -264,6 +264,7 @@
+ #define JFS_NAME_MAX 255
+ #define JFS_PATH_MAX BPSIZE
+
++#define JFS_TAGGED 0x00800000 /* Context Tagging */
+
+ /*
+ * file system state (superblock state)
+diff -NurpP --minimal linux-2.6.20.4/fs/jfs/jfs_imap.c linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/jfs_imap.c
+--- linux-2.6.20.4/fs/jfs/jfs_imap.c 2007-02-06 03:01:24 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/jfs_imap.c 2007-02-06 03:05:22 +0100
+@@ -45,6 +45,7 @@
+ #include <linux/buffer_head.h>
+ #include <linux/pagemap.h>
+ #include <linux/quotaops.h>
++#include <linux/vs_tag.h>
+
+ #include "jfs_incore.h"
+ #include "jfs_inode.h"
+@@ -3075,6 +3076,8 @@ static int copy_from_dinode(struct dinod
+ {
+ struct jfs_inode_info *jfs_ip = JFS_IP(ip);
+ struct jfs_sb_info *sbi = JFS_SBI(ip->i_sb);
++ uid_t uid;
++ gid_t gid;
+
+ jfs_ip->fileset = le32_to_cpu(dip->di_fileset);
+ jfs_ip->mode2 = le32_to_cpu(dip->di_mode);
+@@ -3094,14 +3097,18 @@ static int copy_from_dinode(struct dinod
+ }
+ ip->i_nlink = le32_to_cpu(dip->di_nlink);
+
+- jfs_ip->saved_uid = le32_to_cpu(dip->di_uid);
++ uid = le32_to_cpu(dip->di_uid);
++ gid = le32_to_cpu(dip->di_gid);
++ ip->i_tag = INOTAG_TAG(DX_TAG(ip), uid, gid, 0);
++
++ jfs_ip->saved_uid = INOTAG_UID(DX_TAG(ip), uid, gid);
+ if (sbi->uid == -1)
+ ip->i_uid = jfs_ip->saved_uid;
+ else {
+ ip->i_uid = sbi->uid;
+ }
+
+- jfs_ip->saved_gid = le32_to_cpu(dip->di_gid);
++ jfs_ip->saved_gid = INOTAG_GID(DX_TAG(ip), uid, gid);
+ if (sbi->gid == -1)
+ ip->i_gid = jfs_ip->saved_gid;
+ else {
+@@ -3166,14 +3173,12 @@ static void copy_to_dinode(struct dinode
+ dip->di_size = cpu_to_le64(ip->i_size);
+ dip->di_nblocks = cpu_to_le64(PBLK2LBLK(ip->i_sb, ip->i_blocks));
+ dip->di_nlink = cpu_to_le32(ip->i_nlink);
+- if (sbi->uid == -1)
+- dip->di_uid = cpu_to_le32(ip->i_uid);
+- else
+- dip->di_uid = cpu_to_le32(jfs_ip->saved_uid);
+- if (sbi->gid == -1)
+- dip->di_gid = cpu_to_le32(ip->i_gid);
+- else
+- dip->di_gid = cpu_to_le32(jfs_ip->saved_gid);
++
++ dip->di_uid = cpu_to_le32(TAGINO_UID(DX_TAG(ip),
++ (sbi->uid == -1) ? ip->i_uid : jfs_ip->saved_uid, ip->i_tag));
++ dip->di_gid = cpu_to_le32(TAGINO_GID(DX_TAG(ip),
++ (sbi->gid == -1) ? ip->i_gid : jfs_ip->saved_gid, ip->i_tag));
++
+ /*
+ * mode2 is only needed for storing the higher order bits.
+ * Trust i_mode for the lower order ones
+diff -NurpP --minimal linux-2.6.20.4/fs/jfs/jfs_inode.c linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/jfs_inode.c
+--- linux-2.6.20.4/fs/jfs/jfs_inode.c 2006-11-30 21:19:25 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/jfs_inode.c 2007-02-06 03:05:22 +0100
+@@ -18,6 +18,8 @@
+
+ #include <linux/fs.h>
+ #include <linux/quotaops.h>
++#include <linux/vs_dlimit.h>
++#include <linux/vs_tag.h>
+ #include "jfs_incore.h"
+ #include "jfs_inode.h"
+ #include "jfs_filsys.h"
+@@ -30,19 +32,47 @@ void jfs_set_inode_flags(struct inode *i
+ {
+ unsigned int flags = JFS_IP(inode)->mode2;
+
+- inode->i_flags &= ~(S_IMMUTABLE | S_APPEND |
+- S_NOATIME | S_DIRSYNC | S_SYNC);
++ inode->i_flags &= ~(S_IMMUTABLE | S_IUNLINK | S_BARRIER |
++ S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC);
+
+ if (flags & JFS_IMMUTABLE_FL)
+ inode->i_flags |= S_IMMUTABLE;
++ if (flags & JFS_IUNLINK_FL)
++ inode->i_flags |= S_IUNLINK;
++ if (flags & JFS_BARRIER_FL)
++ inode->i_flags |= S_BARRIER;
++
++ if (flags & JFS_SYNC_FL)
++ inode->i_flags |= S_SYNC;
+ if (flags & JFS_APPEND_FL)
+ inode->i_flags |= S_APPEND;
+ if (flags & JFS_NOATIME_FL)
+ inode->i_flags |= S_NOATIME;
+ if (flags & JFS_DIRSYNC_FL)
+ inode->i_flags |= S_DIRSYNC;
+- if (flags & JFS_SYNC_FL)
+- inode->i_flags |= S_SYNC;
++}
++
++int jfs_sync_flags(struct inode *inode)
++{
++ unsigned int oldflags, newflags;
++
++ oldflags = JFS_IP(inode)->mode2;
++ newflags = oldflags & ~(JFS_IMMUTABLE_FL |
++ JFS_IUNLINK_FL | JFS_BARRIER_FL);
++
++ if (IS_IMMUTABLE(inode))
++ newflags |= JFS_IMMUTABLE_FL;
++ if (IS_IUNLINK(inode))
++ newflags |= JFS_IUNLINK_FL;
++ if (IS_BARRIER(inode))
++ newflags |= JFS_BARRIER_FL;
++
++ if (oldflags ^ newflags) {
++ JFS_IP(inode)->mode2 = newflags;
++ inode->i_ctime = CURRENT_TIME;
++ mark_inode_dirty(inode);
++ }
++ return 0;
+ }
+
+ /*
+@@ -90,10 +120,17 @@ struct inode *ialloc(struct inode *paren
+ jfs_inode->saved_uid = inode->i_uid;
+ jfs_inode->saved_gid = inode->i_gid;
+
++ inode->i_tag = dx_current_fstag(sb);
++ if (DLIMIT_ALLOC_INODE(inode)) {
++ iput(inode);
++ return NULL;
++ }
++
+ /*
+ * Allocate inode to quota.
+ */
+ if (DQUOT_ALLOC_INODE(inode)) {
++ DLIMIT_FREE_INODE(inode);
+ DQUOT_DROP(inode);
+ inode->i_flags |= S_NOQUOTA;
+ inode->i_nlink = 0;
+diff -NurpP --minimal linux-2.6.20.4/fs/jfs/jfs_inode.h linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/jfs_inode.h
+--- linux-2.6.20.4/fs/jfs/jfs_inode.h 2006-11-30 21:19:25 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/jfs_inode.h 2007-02-06 03:05:22 +0100
+@@ -31,6 +31,7 @@ extern void jfs_truncate(struct inode *)
+ extern void jfs_truncate_nolock(struct inode *, loff_t);
+ extern void jfs_free_zero_link(struct inode *);
+ extern struct dentry *jfs_get_parent(struct dentry *dentry);
++extern int jfs_sync_flags(struct inode *);
+ extern void jfs_set_inode_flags(struct inode *);
+ extern int jfs_get_block(struct inode *, sector_t, struct buffer_head *, int);
+
+diff -NurpP --minimal linux-2.6.20.4/fs/jfs/jfs_xtree.c linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/jfs_xtree.c
+--- linux-2.6.20.4/fs/jfs/jfs_xtree.c 2006-11-30 21:19:26 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/jfs_xtree.c 2007-02-06 03:05:22 +0100
+@@ -21,6 +21,7 @@
+
+ #include <linux/fs.h>
+ #include <linux/quotaops.h>
++#include <linux/vs_dlimit.h>
+ #include "jfs_incore.h"
+ #include "jfs_filsys.h"
+ #include "jfs_metapage.h"
+@@ -841,7 +842,12 @@ int xtInsert(tid_t tid, /* transaction
+ hint = 0;
+ if ((rc = DQUOT_ALLOC_BLOCK(ip, xlen)))
+ goto out;
++ if ((rc = DLIMIT_ALLOC_BLOCK(ip, xlen))) {
++ DQUOT_FREE_BLOCK(ip, xlen);
++ goto out;
++ }
+ if ((rc = dbAlloc(ip, hint, (s64) xlen, &xaddr))) {
++ DLIMIT_FREE_BLOCK(ip, xlen);
+ DQUOT_FREE_BLOCK(ip, xlen);
+ goto out;
+ }
+@@ -871,6 +877,7 @@ int xtInsert(tid_t tid, /* transaction
+ /* undo data extent allocation */
+ if (*xaddrp == 0) {
+ dbFree(ip, xaddr, (s64) xlen);
++ DLIMIT_FREE_BLOCK(ip, xlen);
+ DQUOT_FREE_BLOCK(ip, xlen);
+ }
+ return rc;
+@@ -1231,6 +1238,7 @@ xtSplitPage(tid_t tid, struct inode *ip,
+ struct tlock *tlck;
+ struct xtlock *sxtlck = NULL, *rxtlck = NULL;
+ int quota_allocation = 0;
++ int dlimit_allocation = 0;
+
+ smp = split->mp;
+ sp = XT_PAGE(ip, smp);
+@@ -1250,6 +1258,13 @@ xtSplitPage(tid_t tid, struct inode *ip,
+
+ quota_allocation += lengthPXD(pxd);
+
++ /* Allocate blocks to dlimit. */
++ if (DLIMIT_ALLOC_BLOCK(ip, lengthPXD(pxd))) {
++ rc = -ENOSPC;
++ goto clean_up;
++ }
++ dlimit_allocation += lengthPXD(pxd);
++
+ /*
+ * allocate the new right page for the split
+ */
+@@ -1451,6 +1466,9 @@ xtSplitPage(tid_t tid, struct inode *ip,
+
+ clean_up:
+
++ /* Rollback dlimit allocation. */
++ if (dlimit_allocation)
++ DLIMIT_FREE_BLOCK(ip, dlimit_allocation);
+ /* Rollback quota allocation. */
+ if (quota_allocation)
+ DQUOT_FREE_BLOCK(ip, quota_allocation);
+@@ -1515,6 +1533,12 @@ xtSplitRoot(tid_t tid,
+ release_metapage(rmp);
+ return -EDQUOT;
+ }
++ /* Allocate blocks to dlimit. */
++ if (DLIMIT_ALLOC_BLOCK(ip, lengthPXD(pxd))) {
++ DQUOT_FREE_BLOCK(ip, lengthPXD(pxd));
++ release_metapage(rmp);
++ return -ENOSPC;
++ }
+
+ jfs_info("xtSplitRoot: ip:0x%p rmp:0x%p", ip, rmp);
+
+@@ -3941,6 +3965,8 @@ s64 xtTruncate(tid_t tid, struct inode *
+ else
+ ip->i_size = newsize;
+
++ /* update dlimit allocation to reflect freed blocks */
++ DLIMIT_FREE_BLOCK(ip, nfreed);
+ /* update quota allocation to reflect freed blocks */
+ DQUOT_FREE_BLOCK(ip, nfreed);
+
+diff -NurpP --minimal linux-2.6.20.4/fs/jfs/namei.c linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/namei.c
+--- linux-2.6.20.4/fs/jfs/namei.c 2006-11-30 21:19:26 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/namei.c 2007-02-06 03:05:22 +0100
+@@ -20,6 +20,7 @@
+ #include <linux/fs.h>
+ #include <linux/ctype.h>
+ #include <linux/quotaops.h>
++#include <linux/vs_tag.h>
+ #include "jfs_incore.h"
+ #include "jfs_superblock.h"
+ #include "jfs_inode.h"
+@@ -1461,6 +1462,7 @@ static struct dentry *jfs_lookup(struct
+ return ERR_PTR(-EACCES);
+ }
+
++ dx_propagate_tag(nd, ip);
+ dentry = d_splice_alias(ip, dentry);
+
+ if (dentry && (JFS_SBI(dip->i_sb)->mntflag & JFS_OS2))
+@@ -1513,6 +1515,7 @@ struct inode_operations jfs_dir_inode_op
+ .setattr = jfs_setattr,
+ .permission = jfs_permission,
+ #endif
++ .sync_flags = jfs_sync_flags,
+ };
+
+ const struct file_operations jfs_dir_operations = {
+diff -NurpP --minimal linux-2.6.20.4/fs/jfs/super.c linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/super.c
+--- linux-2.6.20.4/fs/jfs/super.c 2007-02-06 03:01:24 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/super.c 2007-02-06 03:05:22 +0100
+@@ -194,7 +194,8 @@ static void jfs_put_super(struct super_b
+ enum {
+ Opt_integrity, Opt_nointegrity, Opt_iocharset, Opt_resize,
+ Opt_resize_nosize, Opt_errors, Opt_ignore, Opt_err, Opt_quota,
+- Opt_usrquota, Opt_grpquota, Opt_uid, Opt_gid, Opt_umask
++ Opt_usrquota, Opt_grpquota, Opt_uid, Opt_gid, Opt_umask,
++ Opt_tag, Opt_notag, Opt_tagid
+ };
+
+ static match_table_t tokens = {
+@@ -204,6 +205,10 @@ static match_table_t tokens = {
+ {Opt_resize, "resize=%u"},
+ {Opt_resize_nosize, "resize"},
+ {Opt_errors, "errors=%s"},
++ {Opt_tag, "tag"},
++ {Opt_notag, "notag"},
++ {Opt_tagid, "tagid=%u"},
++ {Opt_tag, "tagxid"},
+ {Opt_ignore, "noquota"},
+ {Opt_ignore, "quota"},
+ {Opt_usrquota, "usrquota"},
+@@ -338,6 +343,20 @@ static int parse_options(char *options,
+ }
+ break;
+ }
++#ifndef CONFIG_TAGGING_NONE
++ case Opt_tag:
++ *flag |= JFS_TAGGED;
++ break;
++ case Opt_notag:
++ *flag &= JFS_TAGGED;
++ break;
++#endif
++#ifdef CONFIG_PROPAGATE
++ case Opt_tagid:
++ /* use args[0] */
++ *flag |= JFS_TAGGED;
++ break;
++#endif
+ default:
+ printk("jfs: Unrecognized mount option \"%s\" "
+ " or missing value\n", p);
+@@ -368,6 +387,13 @@ static int jfs_remount(struct super_bloc
+ if (!parse_options(data, sb, &newLVSize, &flag)) {
+ return -EINVAL;
+ }
++
++ if ((flag & JFS_TAGGED) && !(sb->s_flags & MS_TAGGED)) {
++ printk(KERN_ERR "JFS: %s: tagging not permitted on remount.\n",
++ sb->s_id);
++ return -EINVAL;
++ }
++
+ if (newLVSize) {
+ if (sb->s_flags & MS_RDONLY) {
+ printk(KERN_ERR
+@@ -439,6 +465,9 @@ static int jfs_fill_super(struct super_b
+ #ifdef CONFIG_JFS_POSIX_ACL
+ sb->s_flags |= MS_POSIXACL;
+ #endif
++ /* map mount option tagxid */
++ if (sbi->flag & JFS_TAGGED)
++ sb->s_flags |= MS_TAGGED;
+
+ if (newLVSize) {
+ printk(KERN_ERR "resize option for remount only\n");
+diff -NurpP --minimal linux-2.6.20.4/fs/jfs/xattr.c linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/xattr.c
+--- linux-2.6.20.4/fs/jfs/xattr.c 2006-11-30 21:19:26 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/jfs/xattr.c 2007-02-06 03:05:22 +0100
+@@ -23,6 +23,7 @@
+ #include <linux/posix_acl_xattr.h>
+ #include <linux/quotaops.h>
+ #include <linux/security.h>
++#include <linux/vs_dlimit.h>
+ #include "jfs_incore.h"
+ #include "jfs_superblock.h"
+ #include "jfs_dmap.h"
+@@ -263,9 +264,16 @@ static int ea_write(struct inode *ip, st
+ if (DQUOT_ALLOC_BLOCK(ip, nblocks)) {
+ return -EDQUOT;
+ }
++ /* Allocate new blocks to dlimit. */
++ if (DLIMIT_ALLOC_BLOCK(ip, nblocks)) {
++ DQUOT_FREE_BLOCK(ip, nblocks);
++ return -ENOSPC;
++ }
+
+ rc = dbAlloc(ip, INOHINT(ip), nblocks, &blkno);
+ if (rc) {
++ /*Rollback dlimit allocation. */
++ DLIMIT_FREE_BLOCK(ip, nblocks);
+ /*Rollback quota allocation. */
+ DQUOT_FREE_BLOCK(ip, nblocks);
+ return rc;
+@@ -332,6 +340,8 @@ static int ea_write(struct inode *ip, st
+
+ failed:
+ /* Rollback quota allocation. */
++ DLIMIT_FREE_BLOCK(ip, nblocks);
++ /* Rollback quota allocation. */
+ DQUOT_FREE_BLOCK(ip, nblocks);
+
+ dbFree(ip, blkno, nblocks);
+@@ -468,6 +478,7 @@ static int ea_get(struct inode *inode, s
+ s64 blkno;
+ int rc;
+ int quota_allocation = 0;
++ int dlimit_allocation = 0;
+
+ /* When fsck.jfs clears a bad ea, it doesn't clear the size */
+ if (ji->ea.flag == 0)
+@@ -543,6 +554,12 @@ static int ea_get(struct inode *inode, s
+
+ quota_allocation = blocks_needed;
+
++ /* Allocate new blocks to dlimit. */
++ rc = -ENOSPC;
++ if (DLIMIT_ALLOC_BLOCK(inode, blocks_needed))
++ goto clean_up;
++ dlimit_allocation = blocks_needed;
++
+ rc = dbAlloc(inode, INOHINT(inode), (s64) blocks_needed,
+ &blkno);
+ if (rc)
+@@ -599,6 +616,9 @@ static int ea_get(struct inode *inode, s
+ return ea_size;
+
+ clean_up:
++ /* Rollback dlimit allocation */
++ if (dlimit_allocation)
++ DLIMIT_FREE_BLOCK(inode, dlimit_allocation);
+ /* Rollback quota allocation */
+ if (quota_allocation)
+ DQUOT_FREE_BLOCK(inode, quota_allocation);
+@@ -675,8 +695,10 @@ static int ea_put(tid_t tid, struct inod
+ }
+
+ /* If old blocks exist, they must be removed from quota allocation. */
+- if (old_blocks)
++ if (old_blocks) {
++ DLIMIT_FREE_BLOCK(inode, old_blocks);
+ DQUOT_FREE_BLOCK(inode, old_blocks);
++ }
+
+ inode->i_ctime = CURRENT_TIME;
+
+diff -NurpP --minimal linux-2.6.20.4/fs/libfs.c linux-2.6.20.4-vs2.2.0-rc20/fs/libfs.c
+--- linux-2.6.20.4/fs/libfs.c 2007-02-06 03:01:24 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/libfs.c 2007-02-06 03:05:22 +0100
+@@ -124,7 +124,8 @@ static inline unsigned char dt_type(stru
+ * both impossible due to the lock on directory.
+ */
+
+-int dcache_readdir(struct file * filp, void * dirent, filldir_t filldir)
++static inline int do_dcache_readdir_filter(struct file * filp,
++ void * dirent, filldir_t filldir, int (*filter)(struct dentry *dentry))
+ {
+ struct dentry *dentry = filp->f_path.dentry;
+ struct dentry *cursor = filp->private_data;
+@@ -157,6 +158,8 @@ int dcache_readdir(struct file * filp, v
+ next = list_entry(p, struct dentry, d_u.d_child);
+ if (d_unhashed(next) || !next->d_inode)
+ continue;
++ if (filter && !filter(next))
++ continue;
+
+ spin_unlock(&dcache_lock);
+ if (filldir(dirent, next->d_name.name, next->d_name.len, filp->f_pos, next->d_inode->i_ino, dt_type(next->d_inode)) < 0)
+@@ -172,6 +175,18 @@ int dcache_readdir(struct file * filp, v
+ return 0;
+ }
+
++int dcache_readdir(struct file * filp, void * dirent, filldir_t filldir)
++{
++ return do_dcache_readdir_filter(filp, dirent, filldir, NULL);
++}
++
++int dcache_readdir_filter(struct file * filp, void * dirent, filldir_t filldir,
++ int (*filter)(struct dentry *))
++{
++ return do_dcache_readdir_filter(filp, dirent, filldir, filter);
++}
++
++
+ ssize_t generic_read_dir(struct file *filp, char __user *buf, size_t siz, loff_t *ppos)
+ {
+ return -EISDIR;
+@@ -611,6 +626,7 @@ EXPORT_SYMBOL(dcache_dir_close);
+ EXPORT_SYMBOL(dcache_dir_lseek);
+ EXPORT_SYMBOL(dcache_dir_open);
+ EXPORT_SYMBOL(dcache_readdir);
++EXPORT_SYMBOL(dcache_readdir_filter);
+ EXPORT_SYMBOL(generic_read_dir);
+ EXPORT_SYMBOL(get_sb_pseudo);
+ EXPORT_SYMBOL(simple_commit_write);
+diff -NurpP --minimal linux-2.6.20.4/fs/locks.c linux-2.6.20.4-vs2.2.0-rc20/fs/locks.c
+--- linux-2.6.20.4/fs/locks.c 2007-02-06 03:01:24 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/locks.c 2007-02-25 17:48:19 +0100
+@@ -125,6 +125,8 @@
+ #include <linux/syscalls.h>
+ #include <linux/time.h>
+ #include <linux/rcupdate.h>
++#include <linux/vs_base.h>
++#include <linux/vs_limit.h>
+
+ #include <asm/semaphore.h>
+ #include <asm/uaccess.h>
+@@ -147,6 +149,8 @@ static struct kmem_cache *filelock_cache
+ /* Allocate an empty lock structure. */
+ static struct file_lock *locks_alloc_lock(void)
+ {
++ if (!vx_locks_avail(1))
++ return NULL;
+ return kmem_cache_alloc(filelock_cache, GFP_KERNEL);
+ }
+
+@@ -172,6 +176,7 @@ static void locks_free_lock(struct file_
+ BUG_ON(!list_empty(&fl->fl_block));
+ BUG_ON(!list_empty(&fl->fl_link));
+
++ vx_locks_dec(fl);
+ locks_release_private(fl);
+ kmem_cache_free(filelock_cache, fl);
+ }
+@@ -191,6 +196,7 @@ void locks_init_lock(struct file_lock *f
+ fl->fl_start = fl->fl_end = 0;
+ fl->fl_ops = NULL;
+ fl->fl_lmops = NULL;
++ fl->fl_xid = -1;
+ }
+
+ EXPORT_SYMBOL(locks_init_lock);
+@@ -248,6 +254,7 @@ void locks_copy_lock(struct file_lock *n
+ new->fl_file = fl->fl_file;
+ new->fl_ops = fl->fl_ops;
+ new->fl_lmops = fl->fl_lmops;
++ new->fl_xid = fl->fl_xid;
+
+ locks_copy_private(new, fl);
+ }
+@@ -286,6 +293,11 @@ static int flock_make_lock(struct file *
+ fl->fl_flags = FL_FLOCK;
+ fl->fl_type = type;
+ fl->fl_end = OFFSET_MAX;
++
++ vxd_assert(filp->f_xid == vx_current_xid(),
++ "f_xid(%d) == current(%d)", filp->f_xid, vx_current_xid());
++ fl->fl_xid = filp->f_xid;
++ vx_locks_inc(fl);
+
+ *lock = fl;
+ return 0;
+@@ -451,6 +463,7 @@ static int lease_init(struct file *filp,
+
+ fl->fl_owner = current->files;
+ fl->fl_pid = current->tgid;
++ fl->fl_xid = vx_current_xid();
+
+ fl->fl_file = filp;
+ fl->fl_flags = FL_LEASE;
+@@ -470,6 +483,11 @@ static int lease_alloc(struct file *filp
+ if (fl == NULL)
+ goto out;
+
++ fl->fl_xid = vx_current_xid();
++ if (filp)
++ vxd_assert(filp->f_xid == fl->fl_xid,
++ "f_xid(%d) == fl_xid(%d)", filp->f_xid, fl->fl_xid);
++ vx_locks_inc(fl);
+ error = lease_init(filp, type, fl);
+ if (error) {
+ locks_free_lock(fl);
+@@ -773,6 +791,7 @@ static int flock_lock_file(struct file *
+ if (found)
+ cond_resched();
+
++ new_fl->fl_xid = -1;
+ find_conflict:
+ for_each_lock(inode, before) {
+ struct file_lock *fl = *before;
+@@ -791,6 +810,7 @@ find_conflict:
+ goto out;
+ locks_copy_lock(new_fl, request);
+ locks_insert_lock(&inode->i_flock, new_fl);
++ vx_locks_inc(new_fl);
+ new_fl = NULL;
+ error = 0;
+
+@@ -801,7 +821,8 @@ out:
+ return error;
+ }
+
+-static int __posix_lock_file_conf(struct inode *inode, struct file_lock *request, struct file_lock *conflock)
++static int __posix_lock_file_conf(struct inode *inode, struct file_lock *request,
++ struct file_lock *conflock, xid_t xid)
+ {
+ struct file_lock *fl;
+ struct file_lock *new_fl = NULL;
+@@ -811,6 +832,8 @@ static int __posix_lock_file_conf(struct
+ struct file_lock **before;
+ int error, added = 0;
+
++ vxd_assert(xid == vx_current_xid(),
++ "xid(%d) == current(%d)", xid, vx_current_xid());
+ /*
+ * We may need two file_lock structures for this operation,
+ * so we get them in advance to avoid races.
+@@ -821,7 +844,11 @@ static int __posix_lock_file_conf(struct
+ (request->fl_type != F_UNLCK ||
+ request->fl_start != 0 || request->fl_end != OFFSET_MAX)) {
+ new_fl = locks_alloc_lock();
++ new_fl->fl_xid = xid;
++ vx_locks_inc(new_fl);
+ new_fl2 = locks_alloc_lock();
++ new_fl2->fl_xid = xid;
++ vx_locks_inc(new_fl2);
+ }
+
+ lock_kernel();
+@@ -1018,7 +1045,8 @@ static int __posix_lock_file_conf(struct
+ */
+ int posix_lock_file(struct file *filp, struct file_lock *fl)
+ {
+- return __posix_lock_file_conf(filp->f_path.dentry->d_inode, fl, NULL);
++ return __posix_lock_file_conf(filp->f_path.dentry->d_inode,
++ fl, NULL, filp->f_xid);
+ }
+ EXPORT_SYMBOL(posix_lock_file);
+
+@@ -1033,7 +1061,8 @@ EXPORT_SYMBOL(posix_lock_file);
+ int posix_lock_file_conf(struct file *filp, struct file_lock *fl,
+ struct file_lock *conflock)
+ {
+- return __posix_lock_file_conf(filp->f_path.dentry->d_inode, fl, conflock);
++ return __posix_lock_file_conf(filp->f_path.dentry->d_inode,
++ fl, conflock, filp->f_xid);
+ }
+ EXPORT_SYMBOL(posix_lock_file_conf);
+
+@@ -1123,7 +1152,7 @@ int locks_mandatory_area(int read_write,
+ fl.fl_end = offset + count - 1;
+
+ for (;;) {
+- error = __posix_lock_file_conf(inode, &fl, NULL);
++ error = __posix_lock_file_conf(inode, &fl, NULL, filp->f_xid);
+ if (error != -EAGAIN)
+ break;
+ if (!(fl.fl_flags & FL_SLEEP))
+@@ -1427,8 +1456,8 @@ static int __setlease(struct file *filp,
+ goto out;
+
+ locks_copy_lock(fl, lease);
+-
+ locks_insert_lock(before, fl);
++ vx_locks_inc(fl);
+
+ *flp = fl;
+ error = 0;
+@@ -1685,6 +1714,11 @@ int fcntl_setlk(unsigned int fd, struct
+ if (file_lock == NULL)
+ return -ENOLCK;
+
++ vxd_assert(filp->f_xid == vx_current_xid(),
++ "f_xid(%d) == current(%d)", filp->f_xid, vx_current_xid());
++ file_lock->fl_xid = filp->f_xid;
++ vx_locks_inc(file_lock);
++
+ /*
+ * This might block, so we do it before checking the inode.
+ */
+@@ -1828,6 +1862,11 @@ int fcntl_setlk64(unsigned int fd, struc
+ if (file_lock == NULL)
+ return -ENOLCK;
+
++ vxd_assert(filp->f_xid == vx_current_xid(),
++ "f_xid(%d) == current(%d)", filp->f_xid, vx_current_xid());
++ file_lock->fl_xid = filp->f_xid;
++ vx_locks_inc(file_lock);
++
+ /*
+ * This might block, so we do it before checking the inode.
+ */
+@@ -2123,6 +2162,10 @@ int get_locks_status(char *buffer, char
+ list_for_each(tmp, &file_lock_list) {
+ struct list_head *btmp;
+ struct file_lock *fl = list_entry(tmp, struct file_lock, fl_link);
++
++ if (!vx_check(fl->fl_xid, VS_WATCH_P|VS_IDENT))
++ continue;
++
+ lock_get_status(q, fl, ++i, "");
+ move_lock_status(&q, &pos, offset);
+
+diff -NurpP --minimal linux-2.6.20.4/fs/namei.c linux-2.6.20.4-vs2.2.0-rc20/fs/namei.c
+--- linux-2.6.20.4/fs/namei.c 2007-02-06 03:01:24 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/namei.c 2007-02-15 00:05:56 +0100
+@@ -32,6 +32,11 @@
+ #include <linux/file.h>
+ #include <linux/fcntl.h>
+ #include <linux/namei.h>
++#include <linux/proc_fs.h>
++#include <linux/vserver/inode.h>
++#include <linux/vs_base.h>
++#include <linux/vs_tag.h>
++#include <linux/vs_cowbl.h>
+ #include <asm/namei.h>
+ #include <asm/uaccess.h>
+
+@@ -225,6 +230,31 @@ int generic_permission(struct inode *ino
+ return -EACCES;
+ }
+
++static inline int dx_barrier(struct inode *inode)
++{
++ if (IS_BARRIER(inode) && !vx_check(0, VS_ADMIN)) {
++ vxwprintk(1, "xid=%d did hit the barrier.",
++ vx_current_xid());
++ return 1;
++ }
++ return 0;
++}
++
++static inline int dx_permission(struct inode *inode, int mask, struct nameidata *nd)
++{
++ if (dx_barrier(inode))
++ return -EACCES;
++ if (inode->i_tag == 0)
++ return 0;
++ if (dx_check(inode->i_tag, DX_ADMIN|DX_WATCH|DX_IDENT))
++ return 0;
++
++ vxwprintk(1, "xid=%d denied access to %p[#%d,%lu] %s.",
++ vx_current_xid(), inode, inode->i_tag, inode->i_ino,
++ vxd_cond_path(nd));
++ return -EACCES;
++}
++
+ int permission(struct inode *inode, int mask, struct nameidata *nd)
+ {
+ umode_t mode = inode->i_mode;
+@@ -235,14 +265,14 @@ int permission(struct inode *inode, int
+ /*
+ * Nobody gets write access to a read-only fs.
+ */
+- if (IS_RDONLY(inode) &&
++ if ((IS_RDONLY(inode) || (nd && MNT_IS_RDONLY(nd->mnt))) &&
+ (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)))
+ return -EROFS;
+
+ /*
+ * Nobody gets write access to an immutable file.
+ */
+- if (IS_IMMUTABLE(inode))
++ if (IS_IMMUTABLE(inode) && !IS_COW(inode))
+ return -EACCES;
+ }
+
+@@ -258,6 +288,8 @@ int permission(struct inode *inode, int
+
+ /* Ordinary permission routines do not understand MAY_APPEND. */
+ submask = mask & ~MAY_APPEND;
++ if ((retval = dx_permission(inode, mask, nd)))
++ return retval;
+ if (inode->i_op && inode->i_op->permission)
+ retval = inode->i_op->permission(inode, submask, nd);
+ else
+@@ -433,6 +465,8 @@ static int exec_permission_lite(struct i
+ {
+ umode_t mode = inode->i_mode;
+
++ if (dx_barrier(inode))
++ return -EACCES;
+ if (inode->i_op && inode->i_op->permission)
+ return -EAGAIN;
+
+@@ -733,7 +767,8 @@ static __always_inline void follow_dotdo
+ if (nd->dentry == fs->root &&
+ nd->mnt == fs->rootmnt) {
+ read_unlock(&fs->lock);
+- break;
++ /* for sane '/' avoid follow_mount() */
++ return;
+ }
+ read_unlock(&fs->lock);
+ spin_lock(&dcache_lock);
+@@ -770,16 +805,34 @@ static int do_lookup(struct nameidata *n
+ {
+ struct vfsmount *mnt = nd->mnt;
+ struct dentry *dentry = __d_lookup(nd->dentry, name);
++ struct inode *inode;
+
+ if (!dentry)
+ goto need_lookup;
+ if (dentry->d_op && dentry->d_op->d_revalidate)
+ goto need_revalidate;
++ inode = dentry->d_inode;
++ if (!inode)
++ goto done;
++ if (inode->i_sb->s_magic == PROC_SUPER_MAGIC) {
++ struct proc_dir_entry *de = PDE(inode);
++
++ if (de && !vx_hide_check(0, de->vx_flags))
++ goto hidden;
++ }
++ if (!dx_check(inode->i_tag, DX_WATCH|DX_ADMIN|DX_HOSTID|DX_IDENT))
++ goto hidden;
+ done:
+ path->mnt = mnt;
+ path->dentry = dentry;
+ __follow_mount(path);
+ return 0;
++hidden:
++ vxwprintk(1, "xid=%d did lookup hidden %p[#%d,%lu] %s.",
++ vx_current_xid(), inode, inode->i_tag, inode->i_ino,
++ vxd_path(dentry, mnt));
++ dput(dentry);
++ return -ENOENT;
+
+ need_lookup:
+ dentry = real_lookup(nd->dentry, name, nd);
+@@ -1381,7 +1434,8 @@ static inline int check_sticky(struct in
+ * 10. We don't allow removal of NFS sillyrenamed files; it's handled by
+ * nfs_async_unlink().
+ */
+-static int may_delete(struct inode *dir,struct dentry *victim,int isdir)
++static int may_delete(struct inode *dir, struct dentry *victim,
++ int isdir, struct nameidata *nd)
+ {
+ int error;
+
+@@ -1391,13 +1445,13 @@ static int may_delete(struct inode *dir,
+ BUG_ON(victim->d_parent->d_inode != dir);
+ audit_inode_child(victim->d_name.name, victim->d_inode, dir);
+
+- error = permission(dir,MAY_WRITE | MAY_EXEC, NULL);
++ error = permission(dir,MAY_WRITE | MAY_EXEC, nd);
+ if (error)
+ return error;
+ if (IS_APPEND(dir))
+ return -EPERM;
+ if (check_sticky(dir, victim->d_inode)||IS_APPEND(victim->d_inode)||
+- IS_IMMUTABLE(victim->d_inode))
++ IS_IXORUNLINK(victim->d_inode))
+ return -EPERM;
+ if (isdir) {
+ if (!S_ISDIR(victim->d_inode->i_mode))
+@@ -1528,6 +1582,14 @@ int may_open(struct nameidata *nd, int a
+ if (S_ISDIR(inode->i_mode) && (flag & FMODE_WRITE))
+ return -EISDIR;
+
++#ifdef CONFIG_VSERVER_COWBL
++ if (IS_COW(inode) && (flag & FMODE_WRITE)) {
++ if (IS_COW_LINK(inode))
++ return -EMLINK;
++ inode->i_flags &= ~(S_IUNLINK|S_IMMUTABLE);
++ mark_inode_dirty(inode);
++ }
++#endif
+ error = vfs_permission(nd, acc_mode);
+ if (error)
+ return error;
+@@ -1544,7 +1606,8 @@ int may_open(struct nameidata *nd, int a
+ return -EACCES;
+
+ flag &= ~O_TRUNC;
+- } else if (IS_RDONLY(inode) && (flag & FMODE_WRITE))
++ } else if ((IS_RDONLY(inode) || MNT_IS_RDONLY(nd->mnt))
++ && (flag & FMODE_WRITE))
+ return -EROFS;
+ /*
+ * An append-only file must be opened in append mode for writing.
+@@ -1632,6 +1695,11 @@ int open_namei(int dfd, const char *path
+ struct dentry *dir;
+ int count = 0;
+
++#ifdef CONFIG_VSERVER_COWBL
++ int rflag = flag;
++ int rmode = mode;
++restart:
++#endif
+ acc_mode = ACC_MODE(flag);
+
+ /* O_TRUNC implies we need access checks for write permissions */
+@@ -1725,6 +1793,22 @@ do_last:
+ goto exit;
+ ok:
+ error = may_open(nd, acc_mode, flag);
++#ifdef CONFIG_VSERVER_COWBL
++ if (error == -EMLINK) {
++ struct dentry *dentry;
++ dentry = cow_break_link(pathname);
++ if (IS_ERR(dentry)) {
++ error = PTR_ERR(dentry);
++ goto exit;
++ }
++ dput(dentry);
++ release_open_intent(nd);
++ path_release(nd);
++ flag = rflag;
++ mode = rmode;
++ goto restart;
++ }
++#endif
+ if (error)
+ goto exit;
+ return 0;
+@@ -1836,9 +1920,10 @@ fail:
+ }
+ EXPORT_SYMBOL_GPL(lookup_create);
+
+-int vfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
++int vfs_mknod(struct inode *dir, struct dentry *dentry,
++ int mode, dev_t dev, struct nameidata *nd)
+ {
+- int error = may_create(dir, dentry, NULL);
++ int error = may_create(dir, dentry, nd);
+
+ if (error)
+ return error;
+@@ -1888,11 +1973,12 @@ asmlinkage long sys_mknodat(int dfd, con
+ error = vfs_create(nd.dentry->d_inode,dentry,mode,&nd);
+ break;
+ case S_IFCHR: case S_IFBLK:
+- error = vfs_mknod(nd.dentry->d_inode,dentry,mode,
+- new_decode_dev(dev));
++ error = vfs_mknod(nd.dentry->d_inode, dentry, mode,
++ new_decode_dev(dev), &nd);
+ break;
+ case S_IFIFO: case S_IFSOCK:
+- error = vfs_mknod(nd.dentry->d_inode,dentry,mode,0);
++ error = vfs_mknod(nd.dentry->d_inode, dentry, mode,
++ 0, &nd);
+ break;
+ case S_IFDIR:
+ error = -EPERM;
+@@ -1915,9 +2001,10 @@ asmlinkage long sys_mknod(const char __u
+ return sys_mknodat(AT_FDCWD, filename, mode, dev);
+ }
+
+-int vfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
++int vfs_mkdir(struct inode *dir, struct dentry *dentry,
++ int mode, struct nameidata *nd)
+ {
+- int error = may_create(dir, dentry, NULL);
++ int error = may_create(dir, dentry, nd);
+
+ if (error)
+ return error;
+@@ -1959,7 +2046,7 @@ asmlinkage long sys_mkdirat(int dfd, con
+
+ if (!IS_POSIXACL(nd.dentry->d_inode))
+ mode &= ~current->fs->umask;
+- error = vfs_mkdir(nd.dentry->d_inode, dentry, mode);
++ error = vfs_mkdir(nd.dentry->d_inode, dentry, mode, &nd);
+ dput(dentry);
+ out_unlock:
+ mutex_unlock(&nd.dentry->d_inode->i_mutex);
+@@ -2002,9 +2089,10 @@ void dentry_unhash(struct dentry *dentry
+ spin_unlock(&dcache_lock);
+ }
+
+-int vfs_rmdir(struct inode *dir, struct dentry *dentry)
++int vfs_rmdir(struct inode *dir, struct dentry *dentry,
++ struct nameidata *nd)
+ {
+- int error = may_delete(dir, dentry, 1);
++ int error = may_delete(dir, dentry, 1, nd);
+
+ if (error)
+ return error;
+@@ -2066,7 +2154,7 @@ static long do_rmdir(int dfd, const char
+ error = PTR_ERR(dentry);
+ if (IS_ERR(dentry))
+ goto exit2;
+- error = vfs_rmdir(nd.dentry->d_inode, dentry);
++ error = vfs_rmdir(nd.dentry->d_inode, dentry, &nd);
+ dput(dentry);
+ exit2:
+ mutex_unlock(&nd.dentry->d_inode->i_mutex);
+@@ -2082,9 +2170,10 @@ asmlinkage long sys_rmdir(const char __u
+ return do_rmdir(AT_FDCWD, pathname);
+ }
+
+-int vfs_unlink(struct inode *dir, struct dentry *dentry)
++int vfs_unlink(struct inode *dir, struct dentry *dentry,
++ struct nameidata *nd)
+ {
+- int error = may_delete(dir, dentry, 0);
++ int error = may_delete(dir, dentry, 0, nd);
+
+ if (error)
+ return error;
+@@ -2146,7 +2235,7 @@ static long do_unlinkat(int dfd, const c
+ inode = dentry->d_inode;
+ if (inode)
+ atomic_inc(&inode->i_count);
+- error = vfs_unlink(nd.dentry->d_inode, dentry);
++ error = vfs_unlink(nd.dentry->d_inode, dentry, &nd);
+ exit2:
+ dput(dentry);
+ }
+@@ -2181,9 +2270,10 @@ asmlinkage long sys_unlink(const char __
+ return do_unlinkat(AT_FDCWD, pathname);
+ }
+
+-int vfs_symlink(struct inode *dir, struct dentry *dentry, const char *oldname, int mode)
++int vfs_symlink(struct inode *dir, struct dentry *dentry,
++ const char *oldname, int mode, struct nameidata *nd)
+ {
+- int error = may_create(dir, dentry, NULL);
++ int error = may_create(dir, dentry, nd);
+
+ if (error)
+ return error;
+@@ -2227,7 +2317,7 @@ asmlinkage long sys_symlinkat(const char
+ if (IS_ERR(dentry))
+ goto out_unlock;
+
+- error = vfs_symlink(nd.dentry->d_inode, dentry, from, S_IALLUGO);
++ error = vfs_symlink(nd.dentry->d_inode, dentry, from, S_IALLUGO, &nd);
+ dput(dentry);
+ out_unlock:
+ mutex_unlock(&nd.dentry->d_inode->i_mutex);
+@@ -2244,7 +2334,8 @@ asmlinkage long sys_symlink(const char _
+ return sys_symlinkat(oldname, AT_FDCWD, newname);
+ }
+
+-int vfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *new_dentry)
++int vfs_link(struct dentry *old_dentry, struct inode *dir,
++ struct dentry *new_dentry, struct nameidata *nd)
+ {
+ struct inode *inode = old_dentry->d_inode;
+ int error;
+@@ -2252,7 +2343,7 @@ int vfs_link(struct dentry *old_dentry,
+ if (!inode)
+ return -ENOENT;
+
+- error = may_create(dir, new_dentry, NULL);
++ error = may_create(dir, new_dentry, nd);
+ if (error)
+ return error;
+
+@@ -2262,7 +2353,7 @@ int vfs_link(struct dentry *old_dentry,
+ /*
+ * A link to an append-only or immutable file cannot be created.
+ */
+- if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
++ if (IS_APPEND(inode) || IS_IXORUNLINK(inode))
+ return -EPERM;
+ if (!dir->i_op || !dir->i_op->link)
+ return -EPERM;
+@@ -2322,7 +2413,7 @@ asmlinkage long sys_linkat(int olddfd, c
+ error = PTR_ERR(new_dentry);
+ if (IS_ERR(new_dentry))
+ goto out_unlock;
+- error = vfs_link(old_nd.dentry, nd.dentry->d_inode, new_dentry);
++ error = vfs_link(old_nd.dentry, nd.dentry->d_inode, new_dentry, &nd);
+ dput(new_dentry);
+ out_unlock:
+ mutex_unlock(&nd.dentry->d_inode->i_mutex);
+@@ -2454,14 +2545,14 @@ int vfs_rename(struct inode *old_dir, st
+ if (old_dentry->d_inode == new_dentry->d_inode)
+ return 0;
+
+- error = may_delete(old_dir, old_dentry, is_dir);
++ error = may_delete(old_dir, old_dentry, is_dir, NULL);
+ if (error)
+ return error;
+
+ if (!new_dentry->d_inode)
+ error = may_create(new_dir, new_dentry, NULL);
+ else
+- error = may_delete(new_dir, new_dentry, is_dir);
++ error = may_delete(new_dir, new_dentry, is_dir, NULL);
+ if (error)
+ return error;
+
+@@ -2539,6 +2630,9 @@ static int do_rename(int olddfd, const c
+ error = -EINVAL;
+ if (old_dentry == trap)
+ goto exit4;
++ error = -EROFS;
++ if (MNT_IS_RDONLY(newnd.mnt))
++ goto exit4;
+ new_dentry = lookup_hash(&newnd);
+ error = PTR_ERR(new_dentry);
+ if (IS_ERR(new_dentry))
+@@ -2632,6 +2726,129 @@ int vfs_follow_link(struct nameidata *nd
+ return __vfs_follow_link(nd, link);
+ }
+
++
++#ifdef CONFIG_VSERVER_COWBL
++
++#include <linux/file.h>
++
++struct dentry *cow_break_link(const char *pathname)
++{
++ int ret, mode, pathlen;
++ struct nameidata old_nd, dir_nd;
++ struct dentry *old_dentry, *new_dentry;
++ struct dentry *res = ERR_PTR(-EMLINK);
++ struct vfsmount *old_mnt, *new_mnt;
++ struct file *old_file;
++ struct file *new_file;
++ char *to, *path, pad='\251';
++ loff_t size;
++
++ vxdprintk(VXD_CBIT(misc, 1), "cow_break_link(%s)", pathname);
++ path = kmalloc(PATH_MAX, GFP_KERNEL);
++
++ ret = path_lookup(pathname, LOOKUP_FOLLOW, &old_nd);
++ vxdprintk(VXD_CBIT(misc, 2), "path_lookup(old): %d", ret);
++ old_dentry = old_nd.dentry;
++ old_mnt = old_nd.mnt;
++ mode = old_dentry->d_inode->i_mode;
++
++ to = d_path(old_dentry, old_mnt, path, PATH_MAX-2);
++ pathlen = strlen(to);
++ vxdprintk(VXD_CBIT(misc, 2), "old path %s", to);
++
++ to[pathlen+1] = 0;
++retry:
++ to[pathlen] = pad--;
++ if (pad <= '\240')
++ goto out_rel_old;
++
++ vxdprintk(VXD_CBIT(misc, 1), "temp copy %s", to);
++ ret = path_lookup(to,
++ LOOKUP_PARENT|LOOKUP_OPEN|LOOKUP_CREATE, &dir_nd);
++
++ /* this puppy downs the inode sem */
++ new_dentry = lookup_create(&dir_nd, 0);
++ vxdprintk(VXD_CBIT(misc, 2),
++ "lookup_create(new): %p", new_dentry);
++ if (!new_dentry) {
++ path_release(&dir_nd);
++ goto retry;
++ }
++
++ ret = vfs_create(dir_nd.dentry->d_inode, new_dentry, mode, &dir_nd);
++ vxdprintk(VXD_CBIT(misc, 2),
++ "vfs_create(new): %d", ret);
++ if (ret == -EEXIST) {
++ mutex_unlock(&dir_nd.dentry->d_inode->i_mutex);
++ dput(new_dentry);
++ path_release(&dir_nd);
++ goto retry;
++ }
++ else if (ret < 0) {
++ res = ERR_PTR(ret);
++ goto out_rel_both;
++ }
++
++ new_mnt = dir_nd.mnt;
++
++ dget(old_dentry);
++ mntget(old_mnt);
++ /* this one cleans up the dentry in case of failure */
++ old_file = dentry_open(old_dentry, old_mnt, O_RDONLY);
++ vxdprintk(VXD_CBIT(misc, 2),
++ "dentry_open(old): %p", old_file);
++ if (!old_file)
++ goto out_rel_both;
++
++ dget(new_dentry);
++ mntget(new_mnt);
++ /* this one cleans up the dentry in case of failure */
++ new_file = dentry_open(new_dentry, new_mnt, O_WRONLY);
++ vxdprintk(VXD_CBIT(misc, 2),
++ "dentry_open(new): %p", new_file);
++ if (!new_file)
++ goto out_fput_old;
++
++ size = i_size_read(old_file->f_dentry->d_inode);
++ ret = vfs_sendfile(new_file, old_file, NULL, size, 0);
++ vxdprintk(VXD_CBIT(misc, 2), "vfs_sendfile: %d", ret);
++
++ if (ret < 0)
++ goto out_fput_both;
++
++ ret = vfs_rename(dir_nd.dentry->d_inode, new_dentry,
++ old_nd.dentry->d_parent->d_inode, old_dentry);
++ vxdprintk(VXD_CBIT(misc, 2), "vfs_rename: %d", ret);
++ if (!ret) {
++ res = new_dentry;
++ dget(new_dentry);
++ }
++
++out_fput_both:
++ vxdprintk(VXD_CBIT(misc, 3),
++ "fput(new_file=%p[#%d])", new_file,
++ atomic_read(&new_file->f_count));
++ fput(new_file);
++
++out_fput_old:
++ vxdprintk(VXD_CBIT(misc, 3),
++ "fput(old_file=%p[#%d])", old_file,
++ atomic_read(&old_file->f_count));
++ fput(old_file);
++
++out_rel_both:
++ mutex_unlock(&dir_nd.dentry->d_inode->i_mutex);
++ dput(new_dentry);
++
++ path_release(&dir_nd);
++out_rel_old:
++ path_release(&old_nd);
++ kfree(path);
++ return res;
++}
++
++#endif
++
+ /* get the link contents into pagecache */
+ static char *page_getlink(struct dentry * dentry, struct page **ppage)
+ {
+diff -NurpP --minimal linux-2.6.20.4/fs/namespace.c linux-2.6.20.4-vs2.2.0-rc20/fs/namespace.c
+--- linux-2.6.20.4/fs/namespace.c 2007-02-06 03:01:24 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/namespace.c 2007-02-06 05:58:26 +0100
+@@ -25,6 +25,11 @@
+ #include <linux/security.h>
+ #include <linux/mount.h>
+ #include <linux/ramfs.h>
++#include <linux/vs_base.h>
++#include <linux/vs_context.h>
++#include <linux/vs_tag.h>
++#include <linux/vserver/space.h>
++#include <linux/vserver/global.h>
+ #include <asm/uaccess.h>
+ #include <asm/unistd.h>
+ #include "pnode.h"
+@@ -241,6 +246,7 @@ static struct vfsmount *clone_mnt(struct
+ mnt->mnt_root = dget(root);
+ mnt->mnt_mountpoint = mnt->mnt_root;
+ mnt->mnt_parent = mnt;
++ mnt->mnt_tag = old->mnt_tag;
+
+ if (flag & CL_SLAVE) {
+ list_add(&mnt->mnt_slave, &old->mnt_slave_list);
+@@ -349,44 +355,86 @@ static inline void mangle(struct seq_fil
+ seq_escape(m, s, " \t\n\\");
+ }
+
++static int mnt_is_reachable(struct vfsmount *mnt)
++{
++ struct vfsmount *root_mnt;
++ struct dentry *root, *point;
++ int ret;
++
++ if (mnt == mnt->mnt_ns->root)
++ return 1;
++
++ spin_lock(&vfsmount_lock);
++ root_mnt = current->fs->rootmnt;
++ root = current->fs->root;
++ point = root;
++
++ while ((mnt != mnt->mnt_parent) && (mnt != root_mnt)) {
++ point = mnt->mnt_mountpoint;
++ mnt = mnt->mnt_parent;
++ }
++
++ ret = (mnt == root_mnt) && is_subdir(point, root);
++
++ spin_unlock(&vfsmount_lock);
++
++ return ret;
++}
++
+ static int show_vfsmnt(struct seq_file *m, void *v)
+ {
+ struct vfsmount *mnt = v;
+ int err = 0;
+ static struct proc_fs_info {
+- int flag;
+- char *str;
++ int s_flag;
++ int mnt_flag;
++ char *set_str;
++ char *unset_str;
+ } fs_info[] = {
+- { MS_SYNCHRONOUS, ",sync" },
+- { MS_DIRSYNC, ",dirsync" },
+- { MS_MANDLOCK, ",mand" },
+- { 0, NULL }
+- };
+- static struct proc_fs_info mnt_info[] = {
+- { MNT_NOSUID, ",nosuid" },
+- { MNT_NODEV, ",nodev" },
+- { MNT_NOEXEC, ",noexec" },
+- { MNT_NOATIME, ",noatime" },
+- { MNT_NODIRATIME, ",nodiratime" },
+- { MNT_RELATIME, ",relatime" },
+- { 0, NULL }
++ { MS_RDONLY, MNT_RDONLY, "ro", "rw" },
++ { MS_SYNCHRONOUS, 0, ",sync", NULL },
++ { MS_DIRSYNC, 0, ",dirsync", NULL },
++ { MS_MANDLOCK, 0, ",mand", NULL },
++ { MS_TAGGED, 0, ",tag", NULL },
++ { MS_NOATIME, MNT_NOATIME, ",noatime", NULL },
++ { MS_NODIRATIME, MNT_NODIRATIME, ",nodiratime", NULL },
++ { MS_RELATIME, MNT_RELATIME, ",relatime", NULL },
++ { 0, MNT_NOSUID, ",nosuid", NULL },
++ { 0, MNT_NODEV, ",nodev", NULL },
++ { 0, MNT_NOEXEC, ",noexec", NULL },
++ { 0, 0, NULL, NULL }
+ };
+- struct proc_fs_info *fs_infop;
++ struct proc_fs_info *p;
++ unsigned long s_flags = mnt->mnt_sb->s_flags;
++ int mnt_flags = mnt->mnt_flags;
+
+- mangle(m, mnt->mnt_devname ? mnt->mnt_devname : "none");
+- seq_putc(m, ' ');
+- seq_path(m, mnt, mnt->mnt_root, " \t\n\\");
+- seq_putc(m, ' ');
+- mangle(m, mnt->mnt_sb->s_type->name);
+- seq_puts(m, mnt->mnt_sb->s_flags & MS_RDONLY ? " ro" : " rw");
+- for (fs_infop = fs_info; fs_infop->flag; fs_infop++) {
+- if (mnt->mnt_sb->s_flags & fs_infop->flag)
+- seq_puts(m, fs_infop->str);
++ if (vx_flags(VXF_HIDE_MOUNT, 0))
++ return 0;
++ if (!mnt_is_reachable(mnt) && !vx_check(0, VS_WATCH_P))
++ return 0;
++
++ if (!vx_check(0, VS_ADMIN|VS_WATCH) &&
++ mnt == current->fs->rootmnt) {
++ seq_puts(m, "/dev/root / ");
++ } else {
++ mangle(m, mnt->mnt_devname ? mnt->mnt_devname : "none");
++ seq_putc(m, ' ');
++ seq_path(m, mnt, mnt->mnt_root, " \t\n\\");
++ seq_putc(m, ' ');
+ }
+- for (fs_infop = mnt_info; fs_infop->flag; fs_infop++) {
+- if (mnt->mnt_flags & fs_infop->flag)
+- seq_puts(m, fs_infop->str);
++ mangle(m, mnt->mnt_sb->s_type->name);
++ seq_putc(m, ' ');
++ for (p = fs_info; (p->s_flag | p->mnt_flag) ; p++) {
++ if ((s_flags & p->s_flag) || (mnt_flags & p->mnt_flag)) {
++ if (p->set_str)
++ seq_puts(m, p->set_str);
++ } else {
++ if (p->unset_str)
++ seq_puts(m, p->unset_str);
++ }
+ }
++ if (mnt->mnt_flags & MNT_TAGID)
++ seq_printf(m, ",tag=%d", mnt->mnt_tag);
+ if (mnt->mnt_sb->s_op->show_options)
+ err = mnt->mnt_sb->s_op->show_options(m, mnt);
+ seq_puts(m, " 0 0\n");
+@@ -405,17 +453,27 @@ static int show_vfsstat(struct seq_file
+ struct vfsmount *mnt = v;
+ int err = 0;
+
+- /* device */
+- if (mnt->mnt_devname) {
+- seq_puts(m, "device ");
+- mangle(m, mnt->mnt_devname);
+- } else
+- seq_puts(m, "no device");
++ if (vx_flags(VXF_HIDE_MOUNT, 0))
++ return 0;
++ if (!mnt_is_reachable(mnt) && !vx_check(0, VS_WATCH_P))
++ return 0;
+
+- /* mount point */
+- seq_puts(m, " mounted on ");
+- seq_path(m, mnt, mnt->mnt_root, " \t\n\\");
+- seq_putc(m, ' ');
++ if (!vx_check(0, VS_ADMIN|VS_WATCH) &&
++ mnt == current->fs->rootmnt) {
++ seq_puts(m, "device /dev/root mounted on / ");
++ } else {
++ /* device */
++ if (mnt->mnt_devname) {
++ seq_puts(m, "device ");
++ mangle(m, mnt->mnt_devname);
++ } else
++ seq_puts(m, "no device");
++
++ /* mount point */
++ seq_puts(m, " mounted on ");
++ seq_path(m, mnt, mnt->mnt_root, " \t\n\\");
++ seq_putc(m, ' ');
++ }
+
+ /* file system type */
+ seq_puts(m, "with fstype ");
+@@ -645,7 +703,7 @@ asmlinkage long sys_umount(char __user *
+ goto dput_and_out;
+
+ retval = -EPERM;
+- if (!capable(CAP_SYS_ADMIN))
++ if (!vx_capable(CAP_SYS_ADMIN, VXC_SECURE_MOUNT))
+ goto dput_and_out;
+
+ retval = do_umount(nd.mnt, flags);
+@@ -669,7 +727,7 @@ asmlinkage long sys_oldumount(char __use
+
+ static int mount_is_safe(struct nameidata *nd)
+ {
+- if (capable(CAP_SYS_ADMIN))
++ if (vx_capable(CAP_SYS_ADMIN, VXC_SECURE_MOUNT))
+ return 0;
+ return -EPERM;
+ #ifdef notyet
+@@ -898,11 +956,13 @@ static int do_change_type(struct nameida
+ /*
+ * do loopback mount.
+ */
+-static int do_loopback(struct nameidata *nd, char *old_name, int recurse)
++static int do_loopback(struct nameidata *nd, char *old_name, tag_t tag,
++ unsigned long flags, int mnt_flags)
+ {
+ struct nameidata old_nd;
+ struct vfsmount *mnt = NULL;
+ int err = mount_is_safe(nd);
++ int recurse = flags & MS_REC;
+ if (err)
+ return err;
+ if (!old_name || !*old_name)
+@@ -928,6 +988,12 @@ static int do_loopback(struct nameidata
+ if (!mnt)
+ goto out;
+
++ mnt->mnt_flags = mnt_flags;
++ if (flags & MS_TAGID) {
++ mnt->mnt_tag = tag;
++ mnt->mnt_flags |= MNT_TAGID;
++ }
++
+ err = graft_tree(mnt, nd);
+ if (err) {
+ LIST_HEAD(umount_list);
+@@ -936,6 +1002,7 @@ static int do_loopback(struct nameidata
+ spin_unlock(&vfsmount_lock);
+ release_mounts(&umount_list);
+ }
++ mnt->mnt_flags = mnt_flags;
+
+ out:
+ up_write(&namespace_sem);
+@@ -949,12 +1016,12 @@ out:
+ * on it - tough luck.
+ */
+ static int do_remount(struct nameidata *nd, int flags, int mnt_flags,
+- void *data)
++ void *data, xid_t xid)
+ {
+ int err;
+ struct super_block *sb = nd->mnt->mnt_sb;
+
+- if (!capable(CAP_SYS_ADMIN))
++ if (!vx_capable(CAP_SYS_ADMIN, VXC_SECURE_REMOUNT))
+ return -EPERM;
+
+ if (!check_mnt(nd->mnt))
+@@ -988,7 +1055,7 @@ static int do_move_mount(struct nameidat
+ struct nameidata old_nd, parent_nd;
+ struct vfsmount *p;
+ int err = 0;
+- if (!capable(CAP_SYS_ADMIN))
++ if (!vx_capable(CAP_SYS_ADMIN, VXC_SECURE_MOUNT))
+ return -EPERM;
+ if (!old_name || !*old_name)
+ return -EINVAL;
+@@ -1068,7 +1135,7 @@ static int do_new_mount(struct nameidata
+ return -EINVAL;
+
+ /* we need capabilities... */
+- if (!capable(CAP_SYS_ADMIN))
++ if (!vx_capable(CAP_SYS_ADMIN, VXC_SECURE_MOUNT))
+ return -EPERM;
+
+ mnt = do_kern_mount(type, flags, name, data);
+@@ -1380,6 +1447,7 @@ long do_mount(char *dev_name, char *dir_
+ struct nameidata nd;
+ int retval = 0;
+ int mnt_flags = 0;
++ tag_t tag = 0;
+
+ /* Discard magic */
+ if ((flags & MS_MGC_MSK) == MS_MGC_VAL)
+@@ -1395,7 +1463,19 @@ long do_mount(char *dev_name, char *dir_
+ if (data_page)
+ ((char *)data_page)[PAGE_SIZE - 1] = 0;
+
++#ifdef CONFIG_PROPAGATE
++ retval = dx_parse_tag(data_page, &tag, 1);
++ if (retval) {
++ mnt_flags |= MNT_TAGID;
++ /* bind and re-mounts get the tag flag */
++ if (flags & (MS_BIND|MS_REMOUNT))
++ flags |= MS_TAGID;
++ }
++#endif
++
+ /* Separate the per-mountpoint flags */
++ if (flags & MS_RDONLY)
++ mnt_flags |= MNT_RDONLY;
+ if (flags & MS_NOSUID)
+ mnt_flags |= MNT_NOSUID;
+ if (flags & MS_NODEV)
+@@ -1409,6 +1489,8 @@ long do_mount(char *dev_name, char *dir_
+ if (flags & MS_RELATIME)
+ mnt_flags |= MNT_RELATIME;
+
++ if (!capable(CAP_SYS_ADMIN))
++ mnt_flags |= MNT_NODEV;
+ flags &= ~(MS_NOSUID | MS_NOEXEC | MS_NODEV | MS_ACTIVE |
+ MS_NOATIME | MS_NODIRATIME | MS_RELATIME);
+
+@@ -1423,9 +1505,9 @@ long do_mount(char *dev_name, char *dir_
+
+ if (flags & MS_REMOUNT)
+ retval = do_remount(&nd, flags & ~MS_REMOUNT, mnt_flags,
+- data_page);
++ data_page, tag);
+ else if (flags & MS_BIND)
+- retval = do_loopback(&nd, dev_name, flags & MS_REC);
++ retval = do_loopback(&nd, dev_name, tag, flags, mnt_flags);
+ else if (flags & (MS_SHARED | MS_PRIVATE | MS_SLAVE | MS_UNBINDABLE))
+ retval = do_change_type(&nd, flags);
+ else if (flags & MS_MOVE)
+@@ -1499,6 +1581,7 @@ struct mnt_namespace *dup_mnt_ns(struct
+ q = next_mnt(q, new_ns->root);
+ }
+ up_write(&namespace_sem);
++ atomic_inc(&vs_global_mnt_ns);
+
+ if (rootmnt)
+ mntput(rootmnt);
+@@ -1524,7 +1607,7 @@ int copy_mnt_ns(int flags, struct task_s
+ if (!(flags & CLONE_NEWNS))
+ return 0;
+
+- if (!capable(CAP_SYS_ADMIN)) {
++ if (!vx_capable(CAP_SYS_ADMIN, VXC_SECURE_MOUNT)) {
+ err = -EPERM;
+ goto out;
+ }
+@@ -1876,5 +1959,6 @@ void __put_mnt_ns(struct mnt_namespace *
+ spin_unlock(&vfsmount_lock);
+ up_write(&namespace_sem);
+ release_mounts(&umount_list);
++ atomic_dec(&vs_global_mnt_ns);
+ kfree(ns);
+ }
+diff -NurpP --minimal linux-2.6.20.4/fs/nfs/client.c linux-2.6.20.4-vs2.2.0-rc20/fs/nfs/client.c
+--- linux-2.6.20.4/fs/nfs/client.c 2007-02-06 03:01:24 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/nfs/client.c 2007-02-06 03:05:22 +0100
+@@ -520,6 +520,9 @@ static int nfs_init_server_rpcclient(str
+ if (server->flags & NFS4_MOUNT_INTR)
+ server->client->cl_intr = 1;
+
++ server->client->cl_tag = 0;
++ if (server->flags & NFS_MOUNT_TAGGED)
++ server->client->cl_tag = 1;
+ return 0;
+ }
+
+@@ -676,6 +679,10 @@ static void nfs_server_set_fsinfo(struct
+ server->acdirmin = server->acdirmax = 0;
+ }
+
++ /* FIXME: needs fsinfo
++ if (server->flags & NFS_MOUNT_TAGGED)
++ sb->s_flags |= MS_TAGGED; */
++
+ server->maxfilesize = fsinfo->maxfilesize;
+
+ /* We're airborne Set socket buffersize */
+diff -NurpP --minimal linux-2.6.20.4/fs/nfs/dir.c linux-2.6.20.4-vs2.2.0-rc20/fs/nfs/dir.c
+--- linux-2.6.20.4/fs/nfs/dir.c 2007-02-06 03:01:24 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/nfs/dir.c 2007-02-06 03:05:22 +0100
+@@ -33,6 +33,7 @@
+ #include <linux/pagevec.h>
+ #include <linux/namei.h>
+ #include <linux/mount.h>
++#include <linux/vs_tag.h>
+
+ #include "nfs4_fs.h"
+ #include "delegation.h"
+@@ -933,6 +934,7 @@ static struct dentry *nfs_lookup(struct
+ if (IS_ERR(res))
+ goto out_unlock;
+
++ dx_propagate_tag(nd, inode);
+ no_entry:
+ res = d_materialise_unique(dentry, inode);
+ if (res != NULL) {
+@@ -975,7 +977,8 @@ static int is_atomic_open(struct inode *
+ if (nd->flags & LOOKUP_DIRECTORY)
+ return 0;
+ /* Are we trying to write to a read only partition? */
+- if (IS_RDONLY(dir) && (nd->intent.open.flags & (O_CREAT|O_TRUNC|FMODE_WRITE)))
++ if ((IS_RDONLY(dir) || MNT_IS_RDONLY(nd->mnt)) &&
++ (nd->intent.open.flags & (O_CREAT|O_TRUNC|FMODE_WRITE)))
+ return 0;
+ return 1;
+ }
+diff -NurpP --minimal linux-2.6.20.4/fs/nfs/inode.c linux-2.6.20.4-vs2.2.0-rc20/fs/nfs/inode.c
+--- linux-2.6.20.4/fs/nfs/inode.c 2007-03-25 00:56:55 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/nfs/inode.c 2007-03-25 00:57:02 +0100
+@@ -37,6 +37,7 @@
+ #include <linux/vfs.h>
+ #include <linux/inet.h>
+ #include <linux/nfs_xdr.h>
++#include <linux/vs_tag.h>
+
+ #include <asm/system.h>
+ #include <asm/uaccess.h>
+@@ -279,8 +280,10 @@ nfs_fhget(struct super_block *sb, struct
+ nfsi->change_attr = fattr->change_attr;
+ inode->i_size = nfs_size_to_loff_t(fattr->size);
+ inode->i_nlink = fattr->nlink;
+- inode->i_uid = fattr->uid;
+- inode->i_gid = fattr->gid;
++ inode->i_uid = INOTAG_UID(DX_TAG(inode), fattr->uid, fattr->gid);
++ inode->i_gid = INOTAG_GID(DX_TAG(inode), fattr->uid, fattr->gid);
++ inode->i_tag = INOTAG_TAG(DX_TAG(inode), fattr->uid, fattr->gid, 0);
++ /* maybe fattr->xid someday */
+ if (fattr->valid & (NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4)) {
+ /*
+ * report the blocks in 512byte units
+@@ -369,6 +372,8 @@ void nfs_setattr_update_inode(struct ino
+ inode->i_uid = attr->ia_uid;
+ if ((attr->ia_valid & ATTR_GID) != 0)
+ inode->i_gid = attr->ia_gid;
++ if ((attr->ia_valid & ATTR_TAG) && IS_TAGGED(inode))
++ inode->i_tag = attr->ia_tag;
+ spin_lock(&inode->i_lock);
+ NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
+ spin_unlock(&inode->i_lock);
+@@ -816,6 +821,9 @@ static int nfs_check_inode_attributes(st
+ struct nfs_inode *nfsi = NFS_I(inode);
+ loff_t cur_size, new_isize;
+ int data_unstable;
++ uid_t uid;
++ gid_t gid;
++ tag_t tag;
+
+
+ /* Has the inode gone and changed behind our back? */
+@@ -843,10 +851,15 @@ static int nfs_check_inode_attributes(st
+ if (cur_size != new_isize && nfsi->npages == 0)
+ nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
+
++ uid = INOTAG_UID(DX_TAG(inode), fattr->uid, fattr->gid);
++ gid = INOTAG_GID(DX_TAG(inode), fattr->uid, fattr->gid);
++ tag = INOTAG_TAG(DX_TAG(inode), fattr->uid, fattr->gid, 0);
++
+ /* Have any file permissions changed? */
+ if ((inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO)
+- || inode->i_uid != fattr->uid
+- || inode->i_gid != fattr->gid)
++ || inode->i_uid != uid
++ || inode->i_gid != gid
++ || inode->i_tag != tag)
+ nfsi->cache_validity |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
+
+ /* Has the link count changed? */
+@@ -936,6 +949,9 @@ static int nfs_update_inode(struct inode
+ loff_t cur_isize, new_isize;
+ unsigned int invalid = 0;
+ int data_stable;
++ uid_t uid;
++ gid_t gid;
++ tag_t tag;
+
+ dfprintk(VFS, "NFS: %s(%s/%ld ct=%d info=0x%x)\n",
+ __FUNCTION__, inode->i_sb->s_id, inode->i_ino,
+@@ -1008,15 +1024,21 @@ static int nfs_update_inode(struct inode
+ }
+ memcpy(&inode->i_atime, &fattr->atime, sizeof(inode->i_atime));
+
++ uid = INOTAG_UID(DX_TAG(inode), fattr->uid, fattr->gid);
++ gid = INOTAG_GID(DX_TAG(inode), fattr->uid, fattr->gid);
++ tag = INOTAG_TAG(DX_TAG(inode), fattr->uid, fattr->gid, 0);
++
+ if ((inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO) ||
+- inode->i_uid != fattr->uid ||
+- inode->i_gid != fattr->gid)
++ inode->i_uid != uid ||
++ inode->i_gid != gid ||
++ inode->i_tag != tag)
+ invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
+
+ inode->i_mode = fattr->mode;
+ inode->i_nlink = fattr->nlink;
+- inode->i_uid = fattr->uid;
+- inode->i_gid = fattr->gid;
++ inode->i_uid = uid;
++ inode->i_gid = gid;
++ inode->i_tag = tag;
+
+ if (fattr->valid & (NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4)) {
+ /*
+diff -NurpP --minimal linux-2.6.20.4/fs/nfs/nfs3xdr.c linux-2.6.20.4-vs2.2.0-rc20/fs/nfs/nfs3xdr.c
+--- linux-2.6.20.4/fs/nfs/nfs3xdr.c 2006-11-30 21:19:26 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/nfs/nfs3xdr.c 2007-02-06 03:05:22 +0100
+@@ -22,6 +22,7 @@
+ #include <linux/nfs3.h>
+ #include <linux/nfs_fs.h>
+ #include <linux/nfsacl.h>
++#include <linux/vs_tag.h>
+ #include "internal.h"
+
+ #define NFSDBG_FACILITY NFSDBG_XDR
+@@ -178,7 +179,7 @@ xdr_decode_fattr(__be32 *p, struct nfs_f
+ }
+
+ static inline __be32 *
+-xdr_encode_sattr(__be32 *p, struct iattr *attr)
++xdr_encode_sattr(__be32 *p, struct iattr *attr, int tag)
+ {
+ if (attr->ia_valid & ATTR_MODE) {
+ *p++ = xdr_one;
+@@ -186,15 +187,17 @@ xdr_encode_sattr(__be32 *p, struct iattr
+ } else {
+ *p++ = xdr_zero;
+ }
+- if (attr->ia_valid & ATTR_UID) {
++ if (attr->ia_valid & ATTR_UID ||
++ (tag && (attr->ia_valid & ATTR_TAG))) {
+ *p++ = xdr_one;
+- *p++ = htonl(attr->ia_uid);
++ *p++ = htonl(TAGINO_UID(tag, attr->ia_uid, attr->ia_tag));
+ } else {
+ *p++ = xdr_zero;
+ }
+- if (attr->ia_valid & ATTR_GID) {
++ if (attr->ia_valid & ATTR_GID ||
++ (tag && (attr->ia_valid & ATTR_TAG))) {
+ *p++ = xdr_one;
+- *p++ = htonl(attr->ia_gid);
++ *p++ = htonl(TAGINO_GID(tag, attr->ia_gid, attr->ia_tag));
+ } else {
+ *p++ = xdr_zero;
+ }
+@@ -279,7 +282,8 @@ static int
+ nfs3_xdr_sattrargs(struct rpc_rqst *req, __be32 *p, struct nfs3_sattrargs *args)
+ {
+ p = xdr_encode_fhandle(p, args->fh);
+- p = xdr_encode_sattr(p, args->sattr);
++ p = xdr_encode_sattr(p, args->sattr,
++ req->rq_task->tk_client->cl_tag);
+ *p++ = htonl(args->guard);
+ if (args->guard)
+ p = xdr_encode_time3(p, &args->guardtime);
+@@ -370,7 +374,8 @@ nfs3_xdr_createargs(struct rpc_rqst *req
+ *p++ = args->verifier[0];
+ *p++ = args->verifier[1];
+ } else
+- p = xdr_encode_sattr(p, args->sattr);
++ p = xdr_encode_sattr(p, args->sattr,
++ req->rq_task->tk_client->cl_tag);
+
+ req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+ return 0;
+@@ -384,7 +389,8 @@ nfs3_xdr_mkdirargs(struct rpc_rqst *req,
+ {
+ p = xdr_encode_fhandle(p, args->fh);
+ p = xdr_encode_array(p, args->name, args->len);
+- p = xdr_encode_sattr(p, args->sattr);
++ p = xdr_encode_sattr(p, args->sattr,
++ req->rq_task->tk_client->cl_tag);
+ req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+ return 0;
+ }
+@@ -397,7 +403,8 @@ nfs3_xdr_symlinkargs(struct rpc_rqst *re
+ {
+ p = xdr_encode_fhandle(p, args->fromfh);
+ p = xdr_encode_array(p, args->fromname, args->fromlen);
+- p = xdr_encode_sattr(p, args->sattr);
++ p = xdr_encode_sattr(p, args->sattr,
++ req->rq_task->tk_client->cl_tag);
+ *p++ = htonl(args->pathlen);
+ req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+
+@@ -415,7 +422,8 @@ nfs3_xdr_mknodargs(struct rpc_rqst *req,
+ p = xdr_encode_fhandle(p, args->fh);
+ p = xdr_encode_array(p, args->name, args->len);
+ *p++ = htonl(args->type);
+- p = xdr_encode_sattr(p, args->sattr);
++ p = xdr_encode_sattr(p, args->sattr,
++ req->rq_task->tk_client->cl_tag);
+ if (args->type == NF3CHR || args->type == NF3BLK) {
+ *p++ = htonl(MAJOR(args->rdev));
+ *p++ = htonl(MINOR(args->rdev));
+diff -NurpP --minimal linux-2.6.20.4/fs/nfs/nfsroot.c linux-2.6.20.4-vs2.2.0-rc20/fs/nfs/nfsroot.c
+--- linux-2.6.20.4/fs/nfs/nfsroot.c 2007-02-06 03:01:25 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/nfs/nfsroot.c 2007-02-06 03:05:22 +0100
+@@ -118,12 +118,12 @@ static int mount_port __initdata = 0; /
+ enum {
+ /* Options that take integer arguments */
+ Opt_port, Opt_rsize, Opt_wsize, Opt_timeo, Opt_retrans, Opt_acregmin,
+- Opt_acregmax, Opt_acdirmin, Opt_acdirmax,
++ Opt_acregmax, Opt_acdirmin, Opt_acdirmax, Opt_tagid,
+ /* Options that take no arguments */
+ Opt_soft, Opt_hard, Opt_intr,
+ Opt_nointr, Opt_posix, Opt_noposix, Opt_cto, Opt_nocto, Opt_ac,
+ Opt_noac, Opt_lock, Opt_nolock, Opt_v2, Opt_v3, Opt_udp, Opt_tcp,
+- Opt_acl, Opt_noacl,
++ Opt_acl, Opt_noacl, Opt_tag, Opt_notag,
+ /* Error token */
+ Opt_err
+ };
+@@ -160,6 +160,10 @@ static match_table_t __initdata tokens =
+ {Opt_tcp, "tcp"},
+ {Opt_acl, "acl"},
+ {Opt_noacl, "noacl"},
++ {Opt_tag, "tag"},
++ {Opt_notag, "notag"},
++ {Opt_tagid, "tagid=%u"},
++ {Opt_tag, "tagxid"},
+ {Opt_err, NULL}
+
+ };
+@@ -274,6 +278,20 @@ static int __init root_nfs_parse(char *n
+ case Opt_noacl:
+ nfs_data.flags |= NFS_MOUNT_NOACL;
+ break;
++#ifndef CONFIG_TAGGING_NONE
++ case Opt_tag:
++ nfs_data.flags |= NFS_MOUNT_TAGGED;
++ break;
++ case Opt_notag:
++ nfs_data.flags &= ~NFS_MOUNT_TAGGED;
++ break;
++#endif
++#ifdef CONFIG_PROPAGATE
++ case Opt_tagid:
++ /* use args[0] */
++ nfs_data.flags |= NFS_MOUNT_TAGGED;
++ break;
++#endif
+ default:
+ printk(KERN_WARNING "Root-NFS: unknown "
+ "option: %s\n", p);
+diff -NurpP --minimal linux-2.6.20.4/fs/nfs/super.c linux-2.6.20.4-vs2.2.0-rc20/fs/nfs/super.c
+--- linux-2.6.20.4/fs/nfs/super.c 2006-11-30 21:19:26 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/nfs/super.c 2007-02-06 03:05:22 +0100
+@@ -44,6 +44,7 @@
+ #include <linux/vfs.h>
+ #include <linux/inet.h>
+ #include <linux/nfs_xdr.h>
++#include <linux/vs_tag.h>
+
+ #include <asm/system.h>
+ #include <asm/uaccess.h>
+@@ -290,6 +291,7 @@ static void nfs_show_mount_options(struc
+ { NFS_MOUNT_NOAC, ",noac", "" },
+ { NFS_MOUNT_NONLM, ",nolock", "" },
+ { NFS_MOUNT_NOACL, ",noacl", "" },
++ { NFS_MOUNT_TAGGED, ",tag", "" },
+ { 0, NULL, NULL }
+ };
+ const struct proc_nfs_info *nfs_infop;
+diff -NurpP --minimal linux-2.6.20.4/fs/nfsd/auth.c linux-2.6.20.4-vs2.2.0-rc20/fs/nfsd/auth.c
+--- linux-2.6.20.4/fs/nfsd/auth.c 2006-06-18 04:54:42 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/nfsd/auth.c 2007-02-06 03:05:22 +0100
+@@ -9,6 +9,7 @@
+ #include <linux/sunrpc/svc.h>
+ #include <linux/sunrpc/svcauth.h>
+ #include <linux/nfsd/nfsd.h>
++#include <linux/vs_tag.h>
+
+ #define CAP_NFSD_MASK (CAP_FS_MASK|CAP_TO_MASK(CAP_SYS_RESOURCE))
+
+@@ -41,19 +42,22 @@ int nfsd_setuser(struct svc_rqst *rqstp,
+ get_group_info(cred.cr_group_info);
+
+ if (cred.cr_uid != (uid_t) -1)
+- current->fsuid = cred.cr_uid;
++ current->fsuid = INOTAG_UID(DX_TAG_NFSD, cred.cr_uid, cred.cr_gid);
+ else
+ current->fsuid = exp->ex_anon_uid;
+ if (cred.cr_gid != (gid_t) -1)
+- current->fsgid = cred.cr_gid;
++ current->fsgid = INOTAG_GID(DX_TAG_NFSD, cred.cr_uid, cred.cr_gid);
+ else
+ current->fsgid = exp->ex_anon_gid;
+
++ /* this desperately needs a tag :) */
++ current->xid = (xid_t)INOTAG_TAG(DX_TAG_NFSD, cred.cr_uid, cred.cr_gid, 0);
++
+ if (!cred.cr_group_info)
+ return -ENOMEM;
+ ret = set_current_groups(cred.cr_group_info);
+ put_group_info(cred.cr_group_info);
+- if ((cred.cr_uid)) {
++ if (INOTAG_UID(DX_TAG_NFSD, cred.cr_uid, cred.cr_gid)) {
+ cap_t(current->cap_effective) &= ~CAP_NFSD_MASK;
+ } else {
+ cap_t(current->cap_effective) |= (CAP_NFSD_MASK &
+diff -NurpP --minimal linux-2.6.20.4/fs/nfsd/nfs3xdr.c linux-2.6.20.4-vs2.2.0-rc20/fs/nfsd/nfs3xdr.c
+--- linux-2.6.20.4/fs/nfsd/nfs3xdr.c 2007-02-06 03:01:25 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/nfsd/nfs3xdr.c 2007-02-06 03:05:22 +0100
+@@ -21,6 +21,7 @@
+ #include <linux/sunrpc/svc.h>
+ #include <linux/nfsd/nfsd.h>
+ #include <linux/nfsd/xdr3.h>
++#include <linux/vs_tag.h>
+
+ #define NFSDDBG_FACILITY NFSDDBG_XDR
+
+@@ -107,6 +108,8 @@ static __be32 *
+ decode_sattr3(__be32 *p, struct iattr *iap)
+ {
+ u32 tmp;
++ uid_t uid = 0;
++ gid_t gid = 0;
+
+ iap->ia_valid = 0;
+
+@@ -116,12 +119,15 @@ decode_sattr3(__be32 *p, struct iattr *i
+ }
+ if (*p++) {
+ iap->ia_valid |= ATTR_UID;
+- iap->ia_uid = ntohl(*p++);
++ uid = ntohl(*p++);
+ }
+ if (*p++) {
+ iap->ia_valid |= ATTR_GID;
+- iap->ia_gid = ntohl(*p++);
++ gid = ntohl(*p++);
+ }
++ iap->ia_uid = INOTAG_UID(DX_TAG_NFSD, uid, gid);
++ iap->ia_gid = INOTAG_GID(DX_TAG_NFSD, uid, gid);
++ iap->ia_tag = INOTAG_TAG(DX_TAG_NFSD, uid, gid, 0);
+ if (*p++) {
+ u64 newsize;
+
+@@ -159,8 +165,10 @@ encode_fattr3(struct svc_rqst *rqstp, __
+ *p++ = htonl(nfs3_ftypes[(stat->mode & S_IFMT) >> 12]);
+ *p++ = htonl((u32) stat->mode);
+ *p++ = htonl((u32) stat->nlink);
+- *p++ = htonl((u32) nfsd_ruid(rqstp, stat->uid));
+- *p++ = htonl((u32) nfsd_rgid(rqstp, stat->gid));
++ *p++ = htonl((u32) nfsd_ruid(rqstp,
++ TAGINO_UID(DX_TAG(dentry->d_inode), stat->uid, stat->tag)));
++ *p++ = htonl((u32) nfsd_rgid(rqstp,
++ TAGINO_GID(DX_TAG(dentry->d_inode), stat->gid, stat->tag)));
+ if (S_ISLNK(stat->mode) && stat->size > NFS3_MAXPATHLEN) {
+ p = xdr_encode_hyper(p, (u64) NFS3_MAXPATHLEN);
+ } else {
+diff -NurpP --minimal linux-2.6.20.4/fs/nfsd/nfs4recover.c linux-2.6.20.4-vs2.2.0-rc20/fs/nfsd/nfs4recover.c
+--- linux-2.6.20.4/fs/nfsd/nfs4recover.c 2007-02-06 03:01:25 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/nfsd/nfs4recover.c 2007-02-06 03:14:20 +0100
+@@ -156,7 +156,7 @@ nfsd4_create_clid_dir(struct nfs4_client
+ dprintk("NFSD: nfsd4_create_clid_dir: DIRECTORY EXISTS\n");
+ goto out_put;
+ }
+- status = vfs_mkdir(rec_dir.dentry->d_inode, dentry, S_IRWXU);
++ status = vfs_mkdir(rec_dir.dentry->d_inode, dentry, S_IRWXU, NULL);
+ out_put:
+ dput(dentry);
+ out_unlock:
+@@ -260,7 +260,7 @@ nfsd4_remove_clid_file(struct dentry *di
+ return -EINVAL;
+ }
+ mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_PARENT);
+- status = vfs_unlink(dir->d_inode, dentry);
++ status = vfs_unlink(dir->d_inode, dentry, NULL);
+ mutex_unlock(&dir->d_inode->i_mutex);
+ return status;
+ }
+@@ -275,7 +275,7 @@ nfsd4_clear_clid_dir(struct dentry *dir,
+ * a kernel from the future.... */
+ nfsd4_list_rec_dir(dentry, nfsd4_remove_clid_file);
+ mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_PARENT);
+- status = vfs_rmdir(dir->d_inode, dentry);
++ status = vfs_rmdir(dir->d_inode, dentry, NULL);
+ mutex_unlock(&dir->d_inode->i_mutex);
+ return status;
+ }
+diff -NurpP --minimal linux-2.6.20.4/fs/nfsd/nfs4xdr.c linux-2.6.20.4-vs2.2.0-rc20/fs/nfsd/nfs4xdr.c
+--- linux-2.6.20.4/fs/nfsd/nfs4xdr.c 2007-02-06 03:01:25 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/nfsd/nfs4xdr.c 2007-02-06 03:05:22 +0100
+@@ -57,6 +57,7 @@
+ #include <linux/nfsd_idmap.h>
+ #include <linux/nfs4.h>
+ #include <linux/nfs4_acl.h>
++#include <linux/vs_tag.h>
+
+ #define NFSDDBG_FACILITY NFSDDBG_XDR
+
+@@ -1727,14 +1728,18 @@ out_acl:
+ WRITE32(stat.nlink);
+ }
+ if (bmval1 & FATTR4_WORD1_OWNER) {
+- status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen);
++ status = nfsd4_encode_user(rqstp,
++ TAGINO_UID(DX_TAG(dentry->d_inode),
++ stat.uid, stat.tag), &p, &buflen);
+ if (status == nfserr_resource)
+ goto out_resource;
+ if (status)
+ goto out;
+ }
+ if (bmval1 & FATTR4_WORD1_OWNER_GROUP) {
+- status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen);
++ status = nfsd4_encode_group(rqstp,
++ TAGINO_GID(DX_TAG(dentry->d_inode),
++ stat.gid, stat.tag), &p, &buflen);
+ if (status == nfserr_resource)
+ goto out_resource;
+ if (status)
+diff -NurpP --minimal linux-2.6.20.4/fs/nfsd/nfsxdr.c linux-2.6.20.4-vs2.2.0-rc20/fs/nfsd/nfsxdr.c
+--- linux-2.6.20.4/fs/nfsd/nfsxdr.c 2007-02-06 03:01:25 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/nfsd/nfsxdr.c 2007-02-06 03:05:22 +0100
+@@ -15,6 +15,7 @@
+ #include <linux/nfsd/nfsd.h>
+ #include <linux/nfsd/xdr.h>
+ #include <linux/mm.h>
++#include <linux/vs_tag.h>
+
+ #define NFSDDBG_FACILITY NFSDDBG_XDR
+
+@@ -97,6 +98,8 @@ static __be32 *
+ decode_sattr(__be32 *p, struct iattr *iap)
+ {
+ u32 tmp, tmp1;
++ uid_t uid = 0;
++ gid_t gid = 0;
+
+ iap->ia_valid = 0;
+
+@@ -110,12 +113,15 @@ decode_sattr(__be32 *p, struct iattr *ia
+ }
+ if ((tmp = ntohl(*p++)) != (u32)-1) {
+ iap->ia_valid |= ATTR_UID;
+- iap->ia_uid = tmp;
++ uid = tmp;
+ }
+ if ((tmp = ntohl(*p++)) != (u32)-1) {
+ iap->ia_valid |= ATTR_GID;
+- iap->ia_gid = tmp;
++ gid = tmp;
+ }
++ iap->ia_uid = INOTAG_UID(DX_TAG_NFSD, uid, gid);
++ iap->ia_gid = INOTAG_GID(DX_TAG_NFSD, uid, gid);
++ iap->ia_tag = INOTAG_TAG(DX_TAG_NFSD, uid, gid, 0);
+ if ((tmp = ntohl(*p++)) != (u32)-1) {
+ iap->ia_valid |= ATTR_SIZE;
+ iap->ia_size = tmp;
+@@ -159,8 +165,10 @@ encode_fattr(struct svc_rqst *rqstp, __b
+ *p++ = htonl(nfs_ftypes[type >> 12]);
+ *p++ = htonl((u32) stat->mode);
+ *p++ = htonl((u32) stat->nlink);
+- *p++ = htonl((u32) nfsd_ruid(rqstp, stat->uid));
+- *p++ = htonl((u32) nfsd_rgid(rqstp, stat->gid));
++ *p++ = htonl((u32) nfsd_ruid(rqstp,
++ TAGINO_UID(DX_TAG(dentry->d_inode), stat->uid, stat->tag)));
++ *p++ = htonl((u32) nfsd_rgid(rqstp,
++ TAGINO_GID(DX_TAG(dentry->d_inode), stat->gid, stat->tag)));
+
+ if (S_ISLNK(type) && stat->size > NFS_MAXPATHLEN) {
+ *p++ = htonl(NFS_MAXPATHLEN);
+diff -NurpP --minimal linux-2.6.20.4/fs/nfsd/vfs.c linux-2.6.20.4-vs2.2.0-rc20/fs/nfsd/vfs.c
+--- linux-2.6.20.4/fs/nfsd/vfs.c 2007-02-06 03:01:25 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/nfsd/vfs.c 2007-02-06 03:05:22 +0100
+@@ -1183,13 +1183,13 @@ nfsd_create(struct svc_rqst *rqstp, stru
+ host_err = vfs_create(dirp, dchild, iap->ia_mode, NULL);
+ break;
+ case S_IFDIR:
+- host_err = vfs_mkdir(dirp, dchild, iap->ia_mode);
++ host_err = vfs_mkdir(dirp, dchild, iap->ia_mode, NULL);
+ break;
+ case S_IFCHR:
+ case S_IFBLK:
+ case S_IFIFO:
+ case S_IFSOCK:
+- host_err = vfs_mknod(dirp, dchild, iap->ia_mode, rdev);
++ host_err = vfs_mknod(dirp, dchild, iap->ia_mode, rdev, NULL);
+ break;
+ default:
+ printk("nfsd: bad file type %o in nfsd_create\n", type);
+@@ -1463,11 +1463,13 @@ nfsd_symlink(struct svc_rqst *rqstp, str
+ else {
+ strncpy(path_alloced, path, plen);
+ path_alloced[plen] = 0;
+- host_err = vfs_symlink(dentry->d_inode, dnew, path_alloced, mode);
++ host_err = vfs_symlink(dentry->d_inode, dnew,
++ path_alloced, mode, NULL);
+ kfree(path_alloced);
+ }
+ } else
+- host_err = vfs_symlink(dentry->d_inode, dnew, path, mode);
++ host_err = vfs_symlink(dentry->d_inode, dnew,
++ path, mode, NULL);
+
+ if (!host_err) {
+ if (EX_ISSYNC(fhp->fh_export))
+@@ -1526,7 +1528,7 @@ nfsd_link(struct svc_rqst *rqstp, struct
+ dold = tfhp->fh_dentry;
+ dest = dold->d_inode;
+
+- host_err = vfs_link(dold, dirp, dnew);
++ host_err = vfs_link(dold, dirp, dnew, NULL);
+ if (!host_err) {
+ if (EX_ISSYNC(ffhp->fh_export)) {
+ err = nfserrno(nfsd_sync_dir(ddir));
+@@ -1691,9 +1693,9 @@ nfsd_unlink(struct svc_rqst *rqstp, stru
+ host_err = -EPERM;
+ } else
+ #endif
+- host_err = vfs_unlink(dirp, rdentry);
++ host_err = vfs_unlink(dirp, rdentry, NULL);
+ } else { /* It's RMDIR */
+- host_err = vfs_rmdir(dirp, rdentry);
++ host_err = vfs_rmdir(dirp, rdentry, NULL);
+ }
+
+ dput(rdentry);
+@@ -1804,7 +1806,8 @@ nfsd_permission(struct svc_export *exp,
+ */
+ if (!(acc & MAY_LOCAL_ACCESS))
+ if (acc & (MAY_WRITE | MAY_SATTR | MAY_TRUNC)) {
+- if (EX_RDONLY(exp) || IS_RDONLY(inode))
++ if (EX_RDONLY(exp) || IS_RDONLY(inode)
++ || MNT_IS_RDONLY(exp->ex_mnt))
+ return nfserr_rofs;
+ if (/* (acc & MAY_WRITE) && */ IS_IMMUTABLE(inode))
+ return nfserr_perm;
+diff -NurpP --minimal linux-2.6.20.4/fs/ocfs2/dlm/dlmfs.c linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/dlm/dlmfs.c
+--- linux-2.6.20.4/fs/ocfs2/dlm/dlmfs.c 2007-02-06 03:01:28 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/dlm/dlmfs.c 2007-02-06 03:05:22 +0100
+@@ -44,6 +44,7 @@
+ #include <linux/string.h>
+ #include <linux/smp_lock.h>
+ #include <linux/backing-dev.h>
++#include <linux/vs_tag.h>
+
+ #include <asm/uaccess.h>
+
+@@ -335,6 +336,7 @@ static struct inode *dlmfs_get_root_inod
+ inode->i_mode = mode;
+ inode->i_uid = current->fsuid;
+ inode->i_gid = current->fsgid;
++ inode->i_tag = dx_current_fstag(sb);
+ inode->i_blocks = 0;
+ inode->i_mapping->backing_dev_info = &dlmfs_backing_dev_info;
+ inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+@@ -361,6 +363,7 @@ static struct inode *dlmfs_get_inode(str
+ inode->i_mode = mode;
+ inode->i_uid = current->fsuid;
+ inode->i_gid = current->fsgid;
++ inode->i_tag = dx_current_fstag(sb);
+ inode->i_blocks = 0;
+ inode->i_mapping->backing_dev_info = &dlmfs_backing_dev_info;
+ inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+diff -NurpP --minimal linux-2.6.20.4/fs/ocfs2/dlmglue.c linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/dlmglue.c
+--- linux-2.6.20.4/fs/ocfs2/dlmglue.c 2007-02-06 03:01:28 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/dlmglue.c 2007-02-06 03:05:22 +0100
+@@ -1339,6 +1339,7 @@ static void __ocfs2_stuff_meta_lvb(struc
+ lvb->lvb_iclusters = cpu_to_be32(oi->ip_clusters);
+ lvb->lvb_iuid = cpu_to_be32(inode->i_uid);
+ lvb->lvb_igid = cpu_to_be32(inode->i_gid);
++ lvb->lvb_itag = cpu_to_be16(inode->i_tag);
+ lvb->lvb_imode = cpu_to_be16(inode->i_mode);
+ lvb->lvb_inlink = cpu_to_be16(inode->i_nlink);
+ lvb->lvb_iatime_packed =
+@@ -1392,6 +1393,7 @@ static void ocfs2_refresh_inode_from_lvb
+
+ inode->i_uid = be32_to_cpu(lvb->lvb_iuid);
+ inode->i_gid = be32_to_cpu(lvb->lvb_igid);
++ inode->i_tag = be16_to_cpu(lvb->lvb_itag);
+ inode->i_mode = be16_to_cpu(lvb->lvb_imode);
+ inode->i_nlink = be16_to_cpu(lvb->lvb_inlink);
+ ocfs2_unpack_timespec(&inode->i_atime,
+diff -NurpP --minimal linux-2.6.20.4/fs/ocfs2/dlmglue.h linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/dlmglue.h
+--- linux-2.6.20.4/fs/ocfs2/dlmglue.h 2007-02-06 03:01:28 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/dlmglue.h 2007-02-06 03:05:22 +0100
+@@ -34,7 +34,7 @@
+ struct ocfs2_meta_lvb {
+ __u8 lvb_version;
+ __u8 lvb_reserved0;
+- __be16 lvb_reserved1;
++ __be16 lvb_itag;
+ __be32 lvb_iclusters;
+ __be32 lvb_iuid;
+ __be32 lvb_igid;
+diff -NurpP --minimal linux-2.6.20.4/fs/ocfs2/file.c linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/file.c
+--- linux-2.6.20.4/fs/ocfs2/file.c 2007-02-06 03:01:28 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/file.c 2007-02-06 03:20:23 +0100
+@@ -858,13 +858,15 @@ int ocfs2_setattr(struct dentry *dentry,
+ mlog(0, "uid change: %d\n", attr->ia_uid);
+ if (attr->ia_valid & ATTR_GID)
+ mlog(0, "gid change: %d\n", attr->ia_gid);
++ if (attr->ia_valid & ATTR_TAG)
++ mlog(0, "tag change: %d\n", attr->ia_tag);
+ if (attr->ia_valid & ATTR_SIZE)
+ mlog(0, "size change...\n");
+ if (attr->ia_valid & (ATTR_ATIME | ATTR_MTIME | ATTR_CTIME))
+ mlog(0, "time change...\n");
+
+ #define OCFS2_VALID_ATTRS (ATTR_ATIME | ATTR_MTIME | ATTR_CTIME | ATTR_SIZE \
+- | ATTR_GID | ATTR_UID | ATTR_MODE)
++ | ATTR_GID | ATTR_UID | ATTR_TAG | ATTR_MODE)
+ if (!(attr->ia_valid & OCFS2_VALID_ATTRS)) {
+ mlog(0, "can't handle attrs: 0x%x\n", attr->ia_valid);
+ return 0;
+@@ -1368,6 +1370,7 @@ bail:
+ struct inode_operations ocfs2_file_iops = {
+ .setattr = ocfs2_setattr,
+ .getattr = ocfs2_getattr,
++ .sync_flags = ocfs2_sync_flags,
+ .permission = ocfs2_permission,
+ };
+
+diff -NurpP --minimal linux-2.6.20.4/fs/ocfs2/inode.c linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/inode.c
+--- linux-2.6.20.4/fs/ocfs2/inode.c 2007-02-06 03:01:28 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/inode.c 2007-02-06 03:05:22 +0100
+@@ -29,6 +29,7 @@
+ #include <linux/highmem.h>
+ #include <linux/pagemap.h>
+ #include <linux/smp_lock.h>
++#include <linux/vs_tag.h>
+
+ #include <asm/byteorder.h>
+
+@@ -43,6 +44,7 @@
+ #include "file.h"
+ #include "heartbeat.h"
+ #include "inode.h"
++#include "ioctl.h"
+ #include "journal.h"
+ #include "namei.h"
+ #include "suballoc.h"
+@@ -78,6 +80,10 @@ void ocfs2_set_inode_flags(struct inode
+
+ if (flags & OCFS2_IMMUTABLE_FL)
+ inode->i_flags |= S_IMMUTABLE;
++ if (flags & OCFS2_IUNLINK_FL)
++ inode->i_flags |= S_IUNLINK;
++ if (flags & OCFS2_BARRIER_FL)
++ inode->i_flags |= S_BARRIER;
+
+ if (flags & OCFS2_SYNC_FL)
+ inode->i_flags |= S_SYNC;
+@@ -89,6 +95,27 @@ void ocfs2_set_inode_flags(struct inode
+ inode->i_flags |= S_DIRSYNC;
+ }
+
++int ocfs2_sync_flags(struct inode *inode)
++{
++ unsigned int oldflags, newflags;
++
++ oldflags = OCFS2_I(inode)->ip_flags;
++ newflags = oldflags & ~(OCFS2_IMMUTABLE_FL |
++ OCFS2_IUNLINK_FL | OCFS2_BARRIER_FL);
++
++ if (IS_IMMUTABLE(inode))
++ newflags |= OCFS2_IMMUTABLE_FL;
++ if (IS_IUNLINK(inode))
++ newflags |= OCFS2_IUNLINK_FL;
++ if (IS_BARRIER(inode))
++ newflags |= OCFS2_BARRIER_FL;
++
++ if (oldflags ^ newflags)
++ return ocfs2_set_inode_attr(inode,
++ newflags, OCFS2_FL_MASK);
++ return 0;
++}
++
+ struct inode *ocfs2_ilookup_for_vote(struct ocfs2_super *osb,
+ u64 blkno,
+ int delete_vote)
+@@ -234,6 +261,8 @@ int ocfs2_populate_inode(struct inode *i
+ struct super_block *sb;
+ struct ocfs2_super *osb;
+ int status = -EINVAL;
++ uid_t uid;
++ gid_t gid;
+
+ mlog_entry("(0x%p, size:%llu)\n", inode,
+ (unsigned long long)fe->i_size);
+@@ -265,8 +294,12 @@ int ocfs2_populate_inode(struct inode *i
+ inode->i_generation = le32_to_cpu(fe->i_generation);
+ inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev));
+ inode->i_mode = le16_to_cpu(fe->i_mode);
+- inode->i_uid = le32_to_cpu(fe->i_uid);
+- inode->i_gid = le32_to_cpu(fe->i_gid);
++ uid = le32_to_cpu(fe->i_uid);
++ gid = le32_to_cpu(fe->i_gid);
++ inode->i_uid = INOTAG_UID(DX_TAG(inode), uid, gid);
++ inode->i_gid = INOTAG_GID(DX_TAG(inode), uid, gid);
++ inode->i_tag = INOTAG_TAG(DX_TAG(inode), uid, gid,
++ /* le16_to_cpu(raw_inode->i_raw_tag)i */ 0);
+
+ /* Fast symlinks will have i_size but no allocated clusters. */
+ if (S_ISLNK(inode->i_mode) && !fe->i_clusters)
+@@ -1217,8 +1250,11 @@ int ocfs2_mark_inode_dirty(handle_t *han
+
+ fe->i_size = cpu_to_le64(i_size_read(inode));
+ fe->i_links_count = cpu_to_le16(inode->i_nlink);
+- fe->i_uid = cpu_to_le32(inode->i_uid);
+- fe->i_gid = cpu_to_le32(inode->i_gid);
++ fe->i_uid = cpu_to_le32(TAGINO_UID(DX_TAG(inode),
++ inode->i_uid, inode->i_tag));
++ fe->i_gid = cpu_to_le32(TAGINO_GID(DX_TAG(inode),
++ inode->i_gid, inode->i_tag));
++ /* i_tag = = cpu_to_le16(inode->i_tag); */
+ fe->i_mode = cpu_to_le16(inode->i_mode);
+ fe->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
+ fe->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
+@@ -1246,15 +1282,24 @@ leave:
+ void ocfs2_refresh_inode(struct inode *inode,
+ struct ocfs2_dinode *fe)
+ {
++ uid_t uid;
++ gid_t gid;
++
+ spin_lock(&OCFS2_I(inode)->ip_lock);
+
+ OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
+ OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr);
++ /* OCFS2_I(inode)->ip_flags &= ~OCFS2_FL_MASK;
++ OCFS2_I(inode)->ip_flags |= le32_to_cpu(fe->i_flags) & OCFS2_FL_MASK; */
+ ocfs2_set_inode_flags(inode);
+ i_size_write(inode, le64_to_cpu(fe->i_size));
+ inode->i_nlink = le16_to_cpu(fe->i_links_count);
+- inode->i_uid = le32_to_cpu(fe->i_uid);
+- inode->i_gid = le32_to_cpu(fe->i_gid);
++ uid = le32_to_cpu(fe->i_uid);
++ gid = le32_to_cpu(fe->i_gid);
++ inode->i_uid = INOTAG_UID(DX_TAG(inode), uid, gid);
++ inode->i_gid = INOTAG_GID(DX_TAG(inode), uid, gid);
++ inode->i_tag = INOTAG_TAG(DX_TAG(inode), uid, gid,
++ /* le16_to_cpu(raw_inode->i_raw_tag)i */ 0);
+ inode->i_mode = le16_to_cpu(fe->i_mode);
+ if (S_ISLNK(inode->i_mode) && le32_to_cpu(fe->i_clusters) == 0)
+ inode->i_blocks = 0;
+diff -NurpP --minimal linux-2.6.20.4/fs/ocfs2/inode.h linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/inode.h
+--- linux-2.6.20.4/fs/ocfs2/inode.h 2007-02-06 03:01:28 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/inode.h 2007-02-06 03:05:22 +0100
+@@ -143,5 +143,6 @@ int ocfs2_aio_read(struct file *file, st
+ int ocfs2_aio_write(struct file *file, struct kiocb *req, struct iocb *iocb);
+
+ void ocfs2_set_inode_flags(struct inode *inode);
++int ocfs2_sync_flags(struct inode *inode);
+
+ #endif /* OCFS2_INODE_H */
+diff -NurpP --minimal linux-2.6.20.4/fs/ocfs2/ioctl.c linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/ioctl.c
+--- linux-2.6.20.4/fs/ocfs2/ioctl.c 2007-02-06 03:01:28 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/ioctl.c 2007-02-06 03:05:22 +0100
+@@ -38,7 +38,7 @@ static int ocfs2_get_inode_attr(struct i
+ return status;
+ }
+
+-static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
++int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
+ unsigned mask)
+ {
+ struct ocfs2_inode_info *ocfs2_inode = OCFS2_I(inode);
+diff -NurpP --minimal linux-2.6.20.4/fs/ocfs2/ioctl.h linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/ioctl.h
+--- linux-2.6.20.4/fs/ocfs2/ioctl.h 2006-11-30 21:19:28 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/ioctl.h 2007-02-06 03:05:22 +0100
+@@ -10,6 +10,9 @@
+ #ifndef OCFS2_IOCTL_H
+ #define OCFS2_IOCTL_H
+
++int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
++ unsigned mask);
++
+ int ocfs2_ioctl(struct inode * inode, struct file * filp,
+ unsigned int cmd, unsigned long arg);
+
+diff -NurpP --minimal linux-2.6.20.4/fs/ocfs2/namei.c linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/namei.c
+--- linux-2.6.20.4/fs/ocfs2/namei.c 2007-02-06 03:01:28 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/namei.c 2007-02-06 03:21:17 +0100
+@@ -40,6 +40,7 @@
+ #include <linux/types.h>
+ #include <linux/slab.h>
+ #include <linux/highmem.h>
++#include <linux/vs_tag.h>
+
+ #define MLOG_MASK_PREFIX ML_NAMEI
+ #include <cluster/masklog.h>
+@@ -486,6 +487,9 @@ static int ocfs2_mknod_locked(struct ocf
+ u64 fe_blkno = 0;
+ u16 suballoc_bit;
+ struct inode *inode = NULL;
++ uid_t uid;
++ gid_t gid;
++ tag_t tag;
+
+ mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, mode,
+ (unsigned long)dev, dentry->d_name.len,
+@@ -545,13 +549,19 @@ static int ocfs2_mknod_locked(struct ocf
+ fe->i_blkno = cpu_to_le64(fe_blkno);
+ fe->i_suballoc_bit = cpu_to_le16(suballoc_bit);
+ fe->i_suballoc_slot = cpu_to_le16(osb->slot_num);
+- fe->i_uid = cpu_to_le32(current->fsuid);
++
++ tag = dx_current_fstag(osb->sb);
++ uid = current->fsuid;
+ if (dir->i_mode & S_ISGID) {
+- fe->i_gid = cpu_to_le32(dir->i_gid);
++ gid = dir->i_gid;
+ if (S_ISDIR(mode))
+ mode |= S_ISGID;
+ } else
+- fe->i_gid = cpu_to_le32(current->fsgid);
++ gid = current->fsgid;
++
++ fe->i_uid = cpu_to_le32(TAGINO_UID(DX_TAG(inode), uid, tag));
++ fe->i_gid = cpu_to_le32(TAGINO_GID(DX_TAG(inode), gid, tag));
++ inode->i_tag = tag;
+ fe->i_mode = cpu_to_le16(mode);
+ if (S_ISCHR(mode) || S_ISBLK(mode))
+ fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev));
+@@ -2318,5 +2328,6 @@ struct inode_operations ocfs2_dir_iops =
+ .rename = ocfs2_rename,
+ .setattr = ocfs2_setattr,
+ .getattr = ocfs2_getattr,
++ .sync_flags = ocfs2_sync_flags,
+ .permission = ocfs2_permission,
+ };
+diff -NurpP --minimal linux-2.6.20.4/fs/ocfs2/ocfs2.h linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/ocfs2.h
+--- linux-2.6.20.4/fs/ocfs2/ocfs2.h 2007-02-06 03:01:28 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/ocfs2.h 2007-02-06 03:05:22 +0100
+@@ -175,6 +175,7 @@ enum ocfs2_mount_options
+ OCFS2_MOUNT_NOINTR = 1 << 2, /* Don't catch signals */
+ OCFS2_MOUNT_ERRORS_PANIC = 1 << 3, /* Panic on errors */
+ OCFS2_MOUNT_DATA_WRITEBACK = 1 << 4, /* No data ordering */
++ OCFS2_MOUNT_TAGGED = 1 << 8, /* use tagging */
+ };
+
+ #define OCFS2_OSB_SOFT_RO 0x0001
+diff -NurpP --minimal linux-2.6.20.4/fs/ocfs2/ocfs2_fs.h linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/ocfs2_fs.h
+--- linux-2.6.20.4/fs/ocfs2/ocfs2_fs.h 2007-02-06 03:01:28 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/ocfs2_fs.h 2007-02-06 03:05:22 +0100
+@@ -151,8 +151,12 @@
+ #define OCFS2_NOATIME_FL (0x00000080) /* do not update atime */
+ #define OCFS2_DIRSYNC_FL (0x00010000) /* dirsync behaviour (directories only) */
+
++#define OCFS2_BARRIER_FL (0x04000000) /* Barrier for chroot() */
++#define OCFS2_IUNLINK_FL (0x08000000) /* Immutable unlink */
++
+ #define OCFS2_FL_VISIBLE (0x000100FF) /* User visible flags */
+ #define OCFS2_FL_MODIFIABLE (0x000100FF) /* User modifiable flags */
++#define OCFS2_FL_MASK (0x0F0100FF)
+
+ /*
+ * ioctl commands
+diff -NurpP --minimal linux-2.6.20.4/fs/ocfs2/super.c linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/super.c
+--- linux-2.6.20.4/fs/ocfs2/super.c 2007-02-06 03:01:28 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/ocfs2/super.c 2007-02-06 03:23:25 +0100
+@@ -140,6 +140,7 @@ enum {
+ Opt_data_ordered,
+ Opt_data_writeback,
+ Opt_atime_quantum,
++ Opt_tag, Opt_notag, Opt_tagid,
+ Opt_err,
+ };
+
+@@ -154,6 +155,10 @@ static match_table_t tokens = {
+ {Opt_data_ordered, "data=ordered"},
+ {Opt_data_writeback, "data=writeback"},
+ {Opt_atime_quantum, "atime_quantum=%u"},
++ {Opt_tag, "tag"},
++ {Opt_tag, "tagxid"},
++ {Opt_notag, "notag"},
++ {Opt_tagid, "tagid=%u"},
+ {Opt_err, NULL}
+ };
+
+@@ -362,6 +367,14 @@ static int ocfs2_remount(struct super_bl
+ goto out;
+ }
+
++ printk("ocfs2_remount: %lx,%lx\n", osb->s_mount_opt, sb->s_flags);
++ if ((parsed_options & OCFS2_MOUNT_TAGGED) &&
++ !(sb->s_flags & MS_TAGGED)) {
++ ret = -EINVAL;
++ mlog(ML_ERROR, "Cannot change tagging on remount\n");
++ goto out;
++ }
++
+ if ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) !=
+ (parsed_options & OCFS2_MOUNT_HB_LOCAL)) {
+ ret = -EINVAL;
+@@ -654,6 +667,9 @@ static int ocfs2_fill_super(struct super
+
+ ocfs2_complete_mount_recovery(osb);
+
++ if (osb->s_mount_opt & OCFS2_MOUNT_TAGGED)
++ sb->s_flags |= MS_TAGGED;
++
+ if (ocfs2_mount_local(osb))
+ snprintf(nodestr, sizeof(nodestr), "local");
+ else
+@@ -782,6 +798,20 @@ static int ocfs2_parse_options(struct su
+ else
+ osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
+ break;
++#ifndef CONFIG_TAGGING_NONE
++ case Opt_tag:
++ *mount_opt |= OCFS2_MOUNT_TAGGED;
++ break;
++ case Opt_notag:
++ *mount_opt &= ~OCFS2_MOUNT_TAGGED;
++ break;
++#endif
++#ifdef CONFIG_PROPAGATE
++ case Opt_tagid:
++ /* use args[0] */
++ *mount_opt |= OCFS2_MOUNT_TAGGED;
++ break;
++#endif
+ default:
+ mlog(ML_ERROR,
+ "Unrecognized mount option \"%s\" "
+diff -NurpP --minimal linux-2.6.20.4/fs/open.c linux-2.6.20.4-vs2.2.0-rc20/fs/open.c
+--- linux-2.6.20.4/fs/open.c 2007-02-06 03:01:28 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/open.c 2007-02-06 03:05:22 +0100
+@@ -27,22 +27,31 @@
+ #include <linux/syscalls.h>
+ #include <linux/rcupdate.h>
+ #include <linux/audit.h>
++#include <linux/vs_base.h>
++#include <linux/vs_limit.h>
++#include <linux/vs_dlimit.h>
++#include <linux/vs_tag.h>
++#include <linux/vs_cowbl.h>
+
+ int vfs_statfs(struct dentry *dentry, struct kstatfs *buf)
+ {
+ int retval = -ENODEV;
+
+ if (dentry) {
++ struct super_block *sb = dentry->d_sb;
++
+ retval = -ENOSYS;
+- if (dentry->d_sb->s_op->statfs) {
++ if (sb->s_op->statfs) {
+ memset(buf, 0, sizeof(*buf));
+ retval = security_sb_statfs(dentry);
+ if (retval)
+ return retval;
+- retval = dentry->d_sb->s_op->statfs(dentry, buf);
++ retval = sb->s_op->statfs(dentry, buf);
+ if (retval == 0 && buf->f_frsize == 0)
+ buf->f_frsize = buf->f_bsize;
+ }
++ if (!vx_check(0, VS_ADMIN|VS_WATCH))
++ vx_vsi_statfs(sb, buf);
+ }
+ return retval;
+ }
+@@ -246,7 +255,7 @@ static long do_sys_truncate(const char _
+ goto dput_and_out;
+
+ error = -EROFS;
+- if (IS_RDONLY(inode))
++ if (IS_RDONLY(inode) || MNT_IS_RDONLY(nd.mnt))
+ goto dput_and_out;
+
+ error = -EPERM;
+@@ -395,7 +404,7 @@ asmlinkage long sys_faccessat(int dfd, c
+ special_file(nd.dentry->d_inode->i_mode))
+ goto out_path_release;
+
+- if(IS_RDONLY(nd.dentry->d_inode))
++ if(IS_RDONLY(nd.dentry->d_inode) || MNT_IS_RDONLY(nd.mnt))
+ res = -EROFS;
+
+ out_path_release:
+@@ -509,7 +518,7 @@ asmlinkage long sys_fchmod(unsigned int
+ audit_inode(NULL, inode);
+
+ err = -EROFS;
+- if (IS_RDONLY(inode))
++ if (IS_RDONLY(inode) || MNT_IS_RDONLY(file->f_vfsmnt))
+ goto out_putf;
+ err = -EPERM;
+ if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
+@@ -539,11 +548,11 @@ asmlinkage long sys_fchmodat(int dfd, co
+ error = __user_walk_fd(dfd, filename, LOOKUP_FOLLOW, &nd);
+ if (error)
+ goto out;
+- inode = nd.dentry->d_inode;
+
+- error = -EROFS;
+- if (IS_RDONLY(inode))
++ error = cow_check_and_break(&nd);
++ if (error)
+ goto dput_and_out;
++ inode = nd.dentry->d_inode;
+
+ error = -EPERM;
+ if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
+@@ -568,7 +577,8 @@ asmlinkage long sys_chmod(const char __u
+ return sys_fchmodat(AT_FDCWD, filename, mode);
+ }
+
+-static int chown_common(struct dentry * dentry, uid_t user, gid_t group)
++static int chown_common(struct dentry *dentry, struct vfsmount *mnt,
++ uid_t user, gid_t group)
+ {
+ struct inode * inode;
+ int error;
+@@ -580,7 +590,7 @@ static int chown_common(struct dentry *
+ goto out;
+ }
+ error = -EROFS;
+- if (IS_RDONLY(inode))
++ if (IS_RDONLY(inode) || MNT_IS_RDONLY(mnt))
+ goto out;
+ error = -EPERM;
+ if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
+@@ -588,11 +598,11 @@ static int chown_common(struct dentry *
+ newattrs.ia_valid = ATTR_CTIME;
+ if (user != (uid_t) -1) {
+ newattrs.ia_valid |= ATTR_UID;
+- newattrs.ia_uid = user;
++ newattrs.ia_uid = dx_map_uid(user);
+ }
+ if (group != (gid_t) -1) {
+ newattrs.ia_valid |= ATTR_GID;
+- newattrs.ia_gid = group;
++ newattrs.ia_gid = dx_map_gid(group);
+ }
+ if (!S_ISDIR(inode->i_mode))
+ newattrs.ia_valid |= ATTR_KILL_SUID|ATTR_KILL_SGID;
+@@ -611,7 +621,11 @@ asmlinkage long sys_chown(const char __u
+ error = user_path_walk(filename, &nd);
+ if (error)
+ goto out;
+- error = chown_common(nd.dentry, user, group);
++#ifdef CONFIG_VSERVER_COWBL
++ error = cow_check_and_break(&nd);
++ if (!error)
++#endif
++ error = chown_common(nd.dentry, nd.mnt, user, group);
+ path_release(&nd);
+ out:
+ return error;
+@@ -631,7 +645,11 @@ asmlinkage long sys_fchownat(int dfd, co
+ error = __user_walk_fd(dfd, filename, follow, &nd);
+ if (error)
+ goto out;
+- error = chown_common(nd.dentry, user, group);
++#ifdef CONFIG_VSERVER_COWBL
++ error = cow_check_and_break(&nd);
++ if (!error)
++#endif
++ error = chown_common(nd.dentry, nd.mnt, user, group);
+ path_release(&nd);
+ out:
+ return error;
+@@ -645,7 +663,11 @@ asmlinkage long sys_lchown(const char __
+ error = user_path_walk_link(filename, &nd);
+ if (error)
+ goto out;
+- error = chown_common(nd.dentry, user, group);
++#ifdef CONFIG_VSERVER_COWBL
++ error = cow_check_and_break(&nd);
++ if (!error)
++#endif
++ error = chown_common(nd.dentry, nd.mnt, user, group);
+ path_release(&nd);
+ out:
+ return error;
+@@ -664,7 +686,7 @@ asmlinkage long sys_fchown(unsigned int
+
+ dentry = file->f_path.dentry;
+ audit_inode(NULL, dentry->d_inode);
+- error = chown_common(dentry, user, group);
++ error = chown_common(dentry, file->f_vfsmnt, user, group);
+ fput(file);
+ out:
+ return error;
+@@ -891,6 +913,7 @@ repeat:
+ FD_SET(fd, fdt->open_fds);
+ FD_CLR(fd, fdt->close_on_exec);
+ files->next_fd = fd + 1;
++ vx_openfd_inc(fd);
+ #if 1
+ /* Sanity check */
+ if (fdt->fd[fd] != NULL) {
+@@ -913,6 +936,7 @@ static void __put_unused_fd(struct files
+ __FD_CLR(fd, fdt->open_fds);
+ if (fd < files->next_fd)
+ files->next_fd = fd;
++ vx_openfd_dec(fd);
+ }
+
+ void fastcall put_unused_fd(unsigned int fd)
+diff -NurpP --minimal linux-2.6.20.4/fs/proc/array.c linux-2.6.20.4-vs2.2.0-rc20/fs/proc/array.c
+--- linux-2.6.20.4/fs/proc/array.c 2007-02-06 03:01:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/proc/array.c 2007-02-06 03:15:47 +0100
+@@ -75,6 +75,8 @@
+ #include <linux/cpuset.h>
+ #include <linux/rcupdate.h>
+ #include <linux/delayacct.h>
++#include <linux/vs_context.h>
++#include <linux/vs_network.h>
+
+ #include <asm/uaccess.h>
+ #include <asm/pgtable.h>
+@@ -134,8 +136,9 @@ static const char *task_state_array[] =
+ "D (disk sleep)", /* 2 */
+ "T (stopped)", /* 4 */
+ "T (tracing stop)", /* 8 */
+- "Z (zombie)", /* 16 */
+- "X (dead)" /* 32 */
++ "H (on hold)", /* 16 */
++ "Z (zombie)", /* 32 */
++ "X (dead)", /* 64 */
+ };
+
+ static inline const char * get_task_state(struct task_struct *tsk)
+@@ -144,7 +147,8 @@ static inline const char * get_task_stat
+ TASK_INTERRUPTIBLE |
+ TASK_UNINTERRUPTIBLE |
+ TASK_STOPPED |
+- TASK_TRACED)) |
++ TASK_TRACED |
++ TASK_ONHOLD)) |
+ (tsk->exit_state & (EXIT_ZOMBIE |
+ EXIT_DEAD));
+ const char **p = &task_state_array[0];
+@@ -161,8 +165,16 @@ static inline char * task_state(struct t
+ struct group_info *group_info;
+ int g;
+ struct fdtable *fdt = NULL;
++ pid_t pid, ptgid, tppid, tgid;
+
+ rcu_read_lock();
++ tgid = vx_map_tgid(p->tgid);
++ pid = vx_map_pid(p->pid);
++ ptgid = vx_map_pid(pid_alive(p) ?
++ rcu_dereference(p->real_parent)->tgid : 0);
++ tppid = vx_map_pid(pid_alive(p) && p->ptrace ?
++ rcu_dereference(p->parent)->pid : 0);
++
+ buffer += sprintf(buffer,
+ "State:\t%s\n"
+ "SleepAVG:\t%lu%%\n"
+@@ -174,9 +186,7 @@ static inline char * task_state(struct t
+ "Gid:\t%d\t%d\t%d\t%d\n",
+ get_task_state(p),
+ (p->sleep_avg/1024)*100/(1020000000/1024),
+- p->tgid, p->pid,
+- pid_alive(p) ? rcu_dereference(p->real_parent)->tgid : 0,
+- pid_alive(p) && p->ptrace ? rcu_dereference(p->parent)->pid : 0,
++ tgid, pid, (pid > 1) ? ptgid : 0, tppid,
+ p->uid, p->euid, p->suid, p->fsuid,
+ p->gid, p->egid, p->sgid, p->fsgid);
+
+@@ -283,17 +293,26 @@ static inline char * task_sig(struct tas
+
+ static inline char *task_cap(struct task_struct *p, char *buffer)
+ {
+- return buffer + sprintf(buffer, "CapInh:\t%016x\n"
+- "CapPrm:\t%016x\n"
+- "CapEff:\t%016x\n",
+- cap_t(p->cap_inheritable),
+- cap_t(p->cap_permitted),
+- cap_t(p->cap_effective));
++ struct vx_info *vxi = p->vx_info;
++
++ return buffer + sprintf(buffer,
++ "CapInh:\t%016x\n"
++ "CapPrm:\t%016x\n"
++ "CapEff:\t%016x\n",
++ (unsigned)vx_info_mbcap(vxi, p->cap_inheritable),
++ (unsigned)vx_info_mbcap(vxi, p->cap_permitted),
++ (unsigned)vx_info_mbcap(vxi, p->cap_effective));
+ }
+
+ int proc_pid_status(struct task_struct *task, char * buffer)
+ {
+ char * orig = buffer;
++#ifdef CONFIG_VSERVER_LEGACY
++ struct vx_info *vxi;
++#endif
++#ifdef CONFIG_VSERVER_LEGACYNET
++ struct nx_info *nxi;
++#endif
+ struct mm_struct *mm = get_task_mm(task);
+
+ buffer = task_name(task, buffer);
+@@ -306,6 +325,46 @@ int proc_pid_status(struct task_struct *
+ buffer = task_sig(task, buffer);
+ buffer = task_cap(task, buffer);
+ buffer = cpuset_task_status_allowed(task, buffer);
++
++ if (task_vx_flags(task, VXF_HIDE_VINFO, 0))
++ goto skip;
++#ifdef CONFIG_VSERVER_LEGACY
++ buffer += sprintf (buffer,"s_context: %d\n", vx_task_xid(task));
++ vxi = task_get_vx_info(task);
++ if (vxi) {
++ buffer += sprintf (buffer,"ctxflags: %08llx\n"
++ ,(unsigned long long)vxi->vx_flags);
++ buffer += sprintf (buffer,"initpid: %d\n"
++ ,vxi->vx_initpid);
++ } else {
++ buffer += sprintf (buffer,"ctxflags: none\n");
++ buffer += sprintf (buffer,"initpid: none\n");
++ }
++ put_vx_info(vxi);
++#else
++ buffer += sprintf (buffer,"VxID: %d\n", vx_task_xid(task));
++#endif
++#ifdef CONFIG_VSERVER_LEGACYNET
++ nxi = task_get_nx_info(task);
++ if (nxi) {
++ int i;
++
++ buffer += sprintf (buffer,"ipv4root:");
++ for (i=0; i<nxi->nbipv4; i++){
++ buffer += sprintf (buffer," %08x/%08x"
++ ,nxi->ipv4[i]
++ ,nxi->mask[i]);
++ }
++ *buffer++ = '\n';
++ buffer += sprintf (buffer,"ipv4root_bcast: %08x\n"
++ ,nxi->v4_bcast);
++ } else {
++ buffer += sprintf (buffer,"ipv4root: 0\n");
++ buffer += sprintf (buffer,"ipv4root_bcast: 0\n");
++ }
++ put_nx_info(nxi);
++#endif
++skip:
+ #if defined(CONFIG_S390)
+ buffer = task_show_regs(task, buffer);
+ #endif
+@@ -320,7 +379,7 @@ static int do_task_stat(struct task_stru
+ sigset_t sigign, sigcatch;
+ char state;
+ int res;
+- pid_t ppid = 0, pgid = -1, sid = -1;
++ pid_t pid = 0, ppid = 0, pgid = -1, sid = -1;
+ int num_threads = 0;
+ struct mm_struct *mm;
+ unsigned long long start_time;
+@@ -382,8 +441,10 @@ static int do_task_stat(struct task_stru
+ }
+
+ sid = signal_session(sig);
+- pgid = process_group(task);
+- ppid = rcu_dereference(task->real_parent)->tgid;
++ pid = vx_info_map_pid(task->vx_info, task->pid);
++ pgid = vx_info_map_pid(task->vx_info, process_group(task));
++ ppid = (pid > 1) ? vx_info_map_tgid(task->vx_info,
++ rcu_dereference(task->real_parent)->tgid) : 0;
+
+ unlock_task_sighand(task, &flags);
+ }
+@@ -410,10 +471,21 @@ static int do_task_stat(struct task_stru
+ /* convert nsec -> ticks */
+ start_time = nsec_to_clock_t(start_time);
+
++ /* fixup start time for virt uptime */
++ if (vx_flags(VXF_VIRT_UPTIME, 0)) {
++ unsigned long long bias =
++ current->vx_info->cvirt.bias_clock;
++
++ if (start_time > bias)
++ start_time -= bias;
++ else
++ start_time = 0;
++ }
++
+ res = sprintf(buffer,"%d (%s) %c %d %d %d %d %d %lu %lu \
+ %lu %lu %lu %lu %lu %ld %ld %ld %ld %d 0 %llu %lu %ld %lu %lu %lu %lu %lu \
+ %lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %lu %llu\n",
+- task->pid,
++ pid,
+ tcomm,
+ state,
+ ppid,
+diff -NurpP --minimal linux-2.6.20.4/fs/proc/base.c linux-2.6.20.4-vs2.2.0-rc20/fs/proc/base.c
+--- linux-2.6.20.4/fs/proc/base.c 2007-02-06 03:01:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/proc/base.c 2007-03-25 00:58:18 +0100
+@@ -73,6 +73,9 @@
+ #include <linux/poll.h>
+ #include <linux/nsproxy.h>
+ #include <linux/oom.h>
++#include <linux/vs_context.h>
++#include <linux/vs_network.h>
++
+ #include "internal.h"
+
+ /* NOTE:
+@@ -1034,6 +1037,8 @@ static struct inode *proc_pid_make_inode
+ inode->i_uid = task->euid;
+ inode->i_gid = task->egid;
+ }
++ /* procfs is xid tagged */
++ inode->i_tag = (tag_t)vx_task_xid(task);
+ security_task_to_inode(task, inode);
+
+ out:
+@@ -1467,6 +1472,13 @@ static struct dentry *proc_pident_lookup
+ if (!task)
+ goto out_no_task;
+
++ /* TODO: maybe we can come up with a generic approach? */
++ if (task_vx_flags(task, VXF_HIDE_VINFO, 0) &&
++ (dentry->d_name.len == 5) &&
++ (!memcmp(dentry->d_name.name, "vinfo", 5) ||
++ !memcmp(dentry->d_name.name, "ninfo", 5)))
++ goto out;
++
+ /*
+ * Yes, it does not scale. And it should not. Don't add
+ * new entries into /proc/<tgid>/ without very good reasons.
+@@ -1671,14 +1683,14 @@ static int proc_self_readlink(struct den
+ int buflen)
+ {
+ char tmp[PROC_NUMBUF];
+- sprintf(tmp, "%d", current->tgid);
++ sprintf(tmp, "%d", vx_map_tgid(current->tgid));
+ return vfs_readlink(dentry,buffer,buflen,tmp);
+ }
+
+ static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd)
+ {
+ char tmp[PROC_NUMBUF];
+- sprintf(tmp, "%d", current->tgid);
++ sprintf(tmp, "%d", vx_map_tgid(current->tgid));
+ return ERR_PTR(vfs_follow_link(nd,tmp));
+ }
+
+@@ -1772,7 +1784,7 @@ out_iput:
+ static struct dentry *proc_base_lookup(struct inode *dir, struct dentry *dentry)
+ {
+ struct dentry *error;
+- struct task_struct *task = get_proc_task(dir);
++ struct task_struct *task = get_proc_task_real(dir);
+ struct pid_entry *p, *last;
+
+ error = ERR_PTR(-ENOENT);
+@@ -1833,6 +1845,9 @@ static int proc_pid_io_accounting(struct
+ static struct file_operations proc_task_operations;
+ static struct inode_operations proc_task_inode_operations;
+
++extern int proc_pid_vx_info(struct task_struct *, char *);
++extern int proc_pid_nx_info(struct task_struct *, char *);
++
+ static struct pid_entry tgid_base_stuff[] = {
+ DIR("task", S_IRUGO|S_IXUGO, task),
+ DIR("fd", S_IRUSR|S_IXUSR, fd),
+@@ -1870,6 +1885,8 @@ static struct pid_entry tgid_base_stuff[
+ #ifdef CONFIG_CPUSETS
+ REG("cpuset", S_IRUGO, cpuset),
+ #endif
++ INF("vinfo", S_IRUGO, pid_vx_info),
++ INF("ninfo", S_IRUGO, pid_nx_info),
+ INF("oom_score", S_IRUGO, oom_score),
+ REG("oom_adj", S_IRUGO|S_IWUSR, oom_adjust),
+ #ifdef CONFIG_AUDITSYSCALL
+@@ -2018,7 +2035,7 @@ struct dentry *proc_pid_lookup(struct in
+ goto out;
+
+ rcu_read_lock();
+- task = find_task_by_pid(tgid);
++ task = vx_find_proc_task_by_pid(tgid);
+ if (task)
+ get_task_struct(task);
+ rcu_read_unlock();
+@@ -2082,7 +2099,7 @@ static int proc_pid_fill_cache(struct fi
+ int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir)
+ {
+ unsigned int nr = filp->f_pos - FIRST_PROCESS_ENTRY;
+- struct task_struct *reaper = get_proc_task(filp->f_path.dentry->d_inode);
++ struct task_struct *reaper = get_proc_task_real(filp->f_path.dentry->d_inode);
+ struct task_struct *task;
+ int tgid;
+
+@@ -2101,6 +2118,8 @@ int proc_pid_readdir(struct file * filp,
+ put_task_struct(task), task = next_tgid(tgid + 1)) {
+ tgid = task->pid;
+ filp->f_pos = tgid + TGID_OFFSET;
++ if (!vx_proc_task_visible(task))
++ continue;
+ if (proc_pid_fill_cache(filp, dirent, filldir, task, tgid) < 0) {
+ put_task_struct(task);
+ goto out;
+@@ -2225,9 +2244,11 @@ static struct dentry *proc_task_lookup(s
+ tid = name_to_int(dentry);
+ if (tid == ~0U)
+ goto out;
++ if (vx_current_initpid(tid))
++ goto out;
+
+ rcu_read_lock();
+- task = find_task_by_pid(tid);
++ task = vx_find_proc_task_by_pid(tid);
+ if (task)
+ get_task_struct(task);
+ rcu_read_unlock();
+@@ -2372,7 +2393,7 @@ static int proc_task_readdir(struct file
+ for (task = first_tid(leader, tid, pos - 2);
+ task;
+ task = next_tid(task), pos++) {
+- tid = task->pid;
++ tid = vx_map_pid(task->pid);
+ if (proc_task_fill_cache(filp, dirent, filldir, task, tid) < 0) {
+ /* returning this tgid failed, save it as the first
+ * pid for the next readir call */
+diff -NurpP --minimal linux-2.6.20.4/fs/proc/generic.c linux-2.6.20.4-vs2.2.0-rc20/fs/proc/generic.c
+--- linux-2.6.20.4/fs/proc/generic.c 2007-02-06 03:01:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/proc/generic.c 2007-02-06 03:05:22 +0100
+@@ -20,6 +20,7 @@
+ #include <linux/namei.h>
+ #include <linux/bitops.h>
+ #include <linux/spinlock.h>
++#include <linux/vserver/inode.h>
+ #include <asm/uaccess.h>
+
+ #include "internal.h"
+@@ -395,12 +396,16 @@ struct dentry *proc_lookup(struct inode
+ for (de = de->subdir; de ; de = de->next) {
+ if (de->namelen != dentry->d_name.len)
+ continue;
++ if (!vx_hide_check(0, de->vx_flags))
++ continue;
+ if (!memcmp(dentry->d_name.name, de->name, de->namelen)) {
+ unsigned int ino = de->low_ino;
+
+ spin_unlock(&proc_subdir_lock);
+ error = -EINVAL;
+ inode = proc_get_inode(dir->i_sb, ino, de);
++ /* generic proc entries belong to the host */
++ inode->i_tag = 0;
+ spin_lock(&proc_subdir_lock);
+ break;
+ }
+@@ -476,12 +481,15 @@ int proc_readdir(struct file * filp,
+ }
+
+ do {
++ if (!vx_hide_check(0, de->vx_flags))
++ goto skip;
+ /* filldir passes info to user space */
+ spin_unlock(&proc_subdir_lock);
+ if (filldir(dirent, de->name, de->namelen, filp->f_pos,
+ de->low_ino, de->mode >> 12) < 0)
+ goto out;
+ spin_lock(&proc_subdir_lock);
++ skip:
+ filp->f_pos++;
+ de = de->next;
+ } while (de);
+@@ -604,6 +612,7 @@ static struct proc_dir_entry *proc_creat
+ ent->namelen = len;
+ ent->mode = mode;
+ ent->nlink = nlink;
++ ent->vx_flags = IATTR_PROC_DEFAULT;
+ out:
+ return ent;
+ }
+@@ -624,7 +633,8 @@ struct proc_dir_entry *proc_symlink(cons
+ kfree(ent->data);
+ kfree(ent);
+ ent = NULL;
+- }
++ } else
++ ent->vx_flags = IATTR_PROC_SYMLINK;
+ } else {
+ kfree(ent);
+ ent = NULL;
+diff -NurpP --minimal linux-2.6.20.4/fs/proc/inode.c linux-2.6.20.4-vs2.2.0-rc20/fs/proc/inode.c
+--- linux-2.6.20.4/fs/proc/inode.c 2007-02-06 03:01:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/proc/inode.c 2007-02-06 03:05:22 +0100
+@@ -168,6 +168,8 @@ struct inode *proc_get_inode(struct supe
+ inode->i_uid = de->uid;
+ inode->i_gid = de->gid;
+ }
++ if (de->vx_flags)
++ PROC_I(inode)->vx_flags = de->vx_flags;
+ if (de->size)
+ inode->i_size = de->size;
+ if (de->nlink)
+diff -NurpP --minimal linux-2.6.20.4/fs/proc/internal.h linux-2.6.20.4-vs2.2.0-rc20/fs/proc/internal.h
+--- linux-2.6.20.4/fs/proc/internal.h 2006-11-30 21:19:28 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/proc/internal.h 2007-02-06 03:05:22 +0100
+@@ -10,6 +10,7 @@
+ */
+
+ #include <linux/proc_fs.h>
++#include <linux/vs_pid.h>
+
+ struct vmalloc_info {
+ unsigned long used;
+@@ -56,11 +57,16 @@ static inline struct pid *proc_pid(struc
+ return PROC_I(inode)->pid;
+ }
+
+-static inline struct task_struct *get_proc_task(struct inode *inode)
++static inline struct task_struct *get_proc_task_real(struct inode *inode)
+ {
+ return get_pid_task(proc_pid(inode), PIDTYPE_PID);
+ }
+
++static inline struct task_struct *get_proc_task(struct inode *inode)
++{
++ return vx_get_proc_task(inode, proc_pid(inode));
++}
++
+ static inline int proc_fd(struct inode *inode)
+ {
+ return PROC_I(inode)->fd;
+diff -NurpP --minimal linux-2.6.20.4/fs/proc/proc_misc.c linux-2.6.20.4-vs2.2.0-rc20/fs/proc/proc_misc.c
+--- linux-2.6.20.4/fs/proc/proc_misc.c 2007-02-06 03:01:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/proc/proc_misc.c 2007-02-06 03:19:18 +0100
+@@ -54,6 +54,8 @@
+ #include <asm/div64.h>
+ #include "internal.h"
+
++#include <linux/vs_cvirt.h>
++
+ #define LOAD_INT(x) ((x) >> FSHIFT)
+ #define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100)
+ /*
+@@ -83,17 +85,32 @@ static int proc_calc_metrics(char *page,
+ static int loadavg_read_proc(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+ {
++ unsigned int running, threads;
+ int a, b, c;
+ int len;
+
+- a = avenrun[0] + (FIXED_1/200);
+- b = avenrun[1] + (FIXED_1/200);
+- c = avenrun[2] + (FIXED_1/200);
+- len = sprintf(page,"%d.%02d %d.%02d %d.%02d %ld/%d %d\n",
++ if (vx_flags(VXF_VIRT_LOAD, 0)) {
++ struct vx_info *vxi = current->vx_info;
++
++ a = vxi->cvirt.load[0] + (FIXED_1/200);
++ b = vxi->cvirt.load[1] + (FIXED_1/200);
++ c = vxi->cvirt.load[2] + (FIXED_1/200);
++
++ running = atomic_read(&vxi->cvirt.nr_running);
++ threads = atomic_read(&vxi->cvirt.nr_threads);
++ } else {
++ a = avenrun[0] + (FIXED_1/200);
++ b = avenrun[1] + (FIXED_1/200);
++ c = avenrun[2] + (FIXED_1/200);
++
++ running = nr_running();
++ threads = nr_threads;
++ }
++ len = sprintf(page,"%d.%02d %d.%02d %d.%02d %d/%d %d\n",
+ LOAD_INT(a), LOAD_FRAC(a),
+ LOAD_INT(b), LOAD_FRAC(b),
+ LOAD_INT(c), LOAD_FRAC(c),
+- nr_running(), nr_threads, current->nsproxy->pid_ns->last_pid);
++ running, threads, current->nsproxy->pid_ns->last_pid);
+ return proc_calc_metrics(page, start, off, count, eof, len);
+ }
+
+@@ -107,6 +124,9 @@ static int uptime_read_proc(char *page,
+
+ do_posix_clock_monotonic_gettime(&uptime);
+ cputime_to_timespec(idletime, &idle);
++ if (vx_flags(VXF_VIRT_UPTIME, 0))
++ vx_vsi_uptime(&uptime, &idle);
++
+ len = sprintf(page,"%lu.%02lu %lu.%02lu\n",
+ (unsigned long) uptime.tv_sec,
+ (uptime.tv_nsec / (NSEC_PER_SEC / 100)),
+@@ -143,7 +163,7 @@ static int meminfo_read_proc(char *page,
+
+ cached = global_page_state(NR_FILE_PAGES) -
+ total_swapcache_pages - i.bufferram;
+- if (cached < 0)
++ if (cached < 0 || vx_flags(VXF_VIRT_MEM, 0))
+ cached = 0;
+
+ get_vmalloc_info(&vmi);
+diff -NurpP --minimal linux-2.6.20.4/fs/proc/root.c linux-2.6.20.4-vs2.2.0-rc20/fs/proc/root.c
+--- linux-2.6.20.4/fs/proc/root.c 2007-02-06 03:01:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/proc/root.c 2007-02-06 03:05:22 +0100
+@@ -26,6 +26,9 @@ struct proc_dir_entry *proc_net, *proc_n
+ #ifdef CONFIG_SYSCTL
+ struct proc_dir_entry *proc_sys_root;
+ #endif
++struct proc_dir_entry *proc_virtual;
++
++extern void proc_vx_init(void);
+
+ static int proc_get_sb(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *data, struct vfsmount *mnt)
+@@ -90,6 +93,7 @@ void __init proc_root_init(void)
+ proc_device_tree_init();
+ #endif
+ proc_bus = proc_mkdir("bus", NULL);
++ proc_vx_init();
+ }
+
+ static int proc_root_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat
+diff -NurpP --minimal linux-2.6.20.4/fs/quota.c linux-2.6.20.4-vs2.2.0-rc20/fs/quota.c
+--- linux-2.6.20.4/fs/quota.c 2006-11-30 21:19:28 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/quota.c 2007-03-14 16:47:44 +0100
+@@ -17,6 +17,7 @@
+ #include <linux/buffer_head.h>
+ #include <linux/capability.h>
+ #include <linux/quotaops.h>
++#include <linux/vs_context.h>
+
+ /* Check validity of generic quotactl commands */
+ static int generic_quotactl_valid(struct super_block *sb, int type, int cmd, qid_t id)
+@@ -81,11 +82,11 @@ static int generic_quotactl_valid(struct
+ if (cmd == Q_GETQUOTA) {
+ if (((type == USRQUOTA && current->euid != id) ||
+ (type == GRPQUOTA && !in_egroup_p(id))) &&
+- !capable(CAP_SYS_ADMIN))
++ !vx_capable(CAP_SYS_ADMIN, VXC_QUOTA_CTL))
+ return -EPERM;
+ }
+ else if (cmd != Q_GETFMT && cmd != Q_SYNC && cmd != Q_GETINFO)
+- if (!capable(CAP_SYS_ADMIN))
++ if (!vx_capable(CAP_SYS_ADMIN, VXC_QUOTA_CTL))
+ return -EPERM;
+
+ return 0;
+@@ -132,10 +133,10 @@ static int xqm_quotactl_valid(struct sup
+ if (cmd == Q_XGETQUOTA) {
+ if (((type == XQM_USRQUOTA && current->euid != id) ||
+ (type == XQM_GRPQUOTA && !in_egroup_p(id))) &&
+- !capable(CAP_SYS_ADMIN))
++ !vx_capable(CAP_SYS_ADMIN, VXC_QUOTA_CTL))
+ return -EPERM;
+ } else if (cmd != Q_XGETQSTAT && cmd != Q_XQUOTASYNC) {
+- if (!capable(CAP_SYS_ADMIN))
++ if (!vx_capable(CAP_SYS_ADMIN, VXC_QUOTA_CTL))
+ return -EPERM;
+ }
+
+@@ -337,6 +338,46 @@ static int do_quotactl(struct super_bloc
+ return 0;
+ }
+
++#if defined(CONFIG_BLK_DEV_VROOT) || defined(CONFIG_BLK_DEV_VROOT_MODULE)
++
++#include <linux/vroot.h>
++#include <linux/major.h>
++#include <linux/module.h>
++#include <linux/kallsyms.h>
++#include <linux/vserver/debug.h>
++
++static vroot_grb_func *vroot_get_real_bdev = NULL;
++
++static spinlock_t vroot_grb_lock = SPIN_LOCK_UNLOCKED;
++
++int register_vroot_grb(vroot_grb_func *func) {
++ int ret = -EBUSY;
++
++ spin_lock(&vroot_grb_lock);
++ if (!vroot_get_real_bdev) {
++ vroot_get_real_bdev = func;
++ ret = 0;
++ }
++ spin_unlock(&vroot_grb_lock);
++ return ret;
++}
++EXPORT_SYMBOL(register_vroot_grb);
++
++int unregister_vroot_grb(vroot_grb_func *func) {
++ int ret = -EINVAL;
++
++ spin_lock(&vroot_grb_lock);
++ if (vroot_get_real_bdev) {
++ vroot_get_real_bdev = NULL;
++ ret = 0;
++ }
++ spin_unlock(&vroot_grb_lock);
++ return ret;
++}
++EXPORT_SYMBOL(unregister_vroot_grb);
++
++#endif
++
+ /*
+ * look up a superblock on which quota ops will be performed
+ * - use the name of a block device to find the superblock thereon
+@@ -354,6 +395,22 @@ static inline struct super_block *quotac
+ putname(tmp);
+ if (IS_ERR(bdev))
+ return ERR_PTR(PTR_ERR(bdev));
++#if defined(CONFIG_BLK_DEV_VROOT) || defined(CONFIG_BLK_DEV_VROOT_MODULE)
++ if (bdev && bdev->bd_inode &&
++ imajor(bdev->bd_inode) == VROOT_MAJOR) {
++ struct block_device *bdnew = (void *)-EINVAL;
++
++ if (vroot_get_real_bdev)
++ bdnew = vroot_get_real_bdev(bdev);
++ else
++ vxdprintk(VXD_CBIT(misc, 0),
++ "vroot_get_real_bdev not set");
++ bdput(bdev);
++ if (IS_ERR(bdnew))
++ return ERR_PTR(PTR_ERR(bdnew));
++ bdev = bdnew;
++ }
++#endif
+ sb = get_super(bdev);
+ bdput(bdev);
+ if (!sb)
+diff -NurpP --minimal linux-2.6.20.4/fs/read_write.c linux-2.6.20.4-vs2.2.0-rc20/fs/read_write.c
+--- linux-2.6.20.4/fs/read_write.c 2007-02-06 03:01:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/read_write.c 2007-02-06 03:38:37 +0100
+@@ -701,12 +701,77 @@ sys_writev(unsigned long fd, const struc
+ return ret;
+ }
+
++ssize_t vfs_sendfile(struct file *out_file, struct file *in_file, loff_t *ppos,
++ size_t count, loff_t max)
++{
++ struct inode * in_inode, * out_inode;
++ loff_t pos;
++ ssize_t ret;
++
++ /* verify in_file */
++ in_inode = in_file->f_path.dentry->d_inode;
++ if (!in_inode)
++ return -EINVAL;
++ if (!in_file->f_op || !in_file->f_op->sendfile)
++ return -EINVAL;
++
++ if (!ppos)
++ ppos = &in_file->f_pos;
++ else
++ if (!(in_file->f_mode & FMODE_PREAD))
++ return -ESPIPE;
++
++ ret = rw_verify_area(READ, in_file, ppos, count);
++ if (ret < 0)
++ return ret;
++ count = ret;
++
++ /* verify out_file */
++ out_inode = out_file->f_path.dentry->d_inode;
++ if (!out_inode)
++ return -EINVAL;
++ if (!out_file->f_op || !out_file->f_op->sendpage)
++ return -EINVAL;
++
++ ret = rw_verify_area(WRITE, out_file, &out_file->f_pos, count);
++ if (ret < 0)
++ return ret;
++ count = ret;
++
++ ret = security_file_permission (out_file, MAY_WRITE);
++ if (ret)
++ return ret;
++
++ if (!max)
++ max = min(in_inode->i_sb->s_maxbytes, out_inode->i_sb->s_maxbytes);
++
++ pos = *ppos;
++ if (unlikely(pos < 0))
++ return -EINVAL;
++ if (unlikely(pos + count > max)) {
++ if (pos >= max)
++ return -EOVERFLOW;
++ count = max - pos;
++ }
++
++ ret = in_file->f_op->sendfile(in_file, ppos, count, file_send_actor, out_file);
++
++ if (ret > 0) {
++ current->rchar += ret;
++ current->wchar += ret;
++ }
++
++ if (*ppos > max)
++ return -EOVERFLOW;
++ return ret;
++}
++
++EXPORT_SYMBOL(vfs_sendfile);
++
+ static ssize_t do_sendfile(int out_fd, int in_fd, loff_t *ppos,
+ size_t count, loff_t max)
+ {
+ struct file * in_file, * out_file;
+- struct inode * in_inode, * out_inode;
+- loff_t pos;
+ ssize_t retval;
+ int fput_needed_in, fput_needed_out;
+
+@@ -719,22 +784,6 @@ static ssize_t do_sendfile(int out_fd, i
+ goto out;
+ if (!(in_file->f_mode & FMODE_READ))
+ goto fput_in;
+- retval = -EINVAL;
+- in_inode = in_file->f_path.dentry->d_inode;
+- if (!in_inode)
+- goto fput_in;
+- if (!in_file->f_op || !in_file->f_op->sendfile)
+- goto fput_in;
+- retval = -ESPIPE;
+- if (!ppos)
+- ppos = &in_file->f_pos;
+- else
+- if (!(in_file->f_mode & FMODE_PREAD))
+- goto fput_in;
+- retval = rw_verify_area(READ, in_file, ppos, count);
+- if (retval < 0)
+- goto fput_in;
+- count = retval;
+
+ retval = security_file_permission (in_file, MAY_READ);
+ if (retval)
+@@ -749,45 +798,12 @@ static ssize_t do_sendfile(int out_fd, i
+ goto fput_in;
+ if (!(out_file->f_mode & FMODE_WRITE))
+ goto fput_out;
+- retval = -EINVAL;
+- if (!out_file->f_op || !out_file->f_op->sendpage)
+- goto fput_out;
+- out_inode = out_file->f_path.dentry->d_inode;
+- retval = rw_verify_area(WRITE, out_file, &out_file->f_pos, count);
+- if (retval < 0)
+- goto fput_out;
+- count = retval;
+-
+- retval = security_file_permission (out_file, MAY_WRITE);
+- if (retval)
+- goto fput_out;
+-
+- if (!max)
+- max = min(in_inode->i_sb->s_maxbytes, out_inode->i_sb->s_maxbytes);
+-
+- pos = *ppos;
+- retval = -EINVAL;
+- if (unlikely(pos < 0))
+- goto fput_out;
+- if (unlikely(pos + count > max)) {
+- retval = -EOVERFLOW;
+- if (pos >= max)
+- goto fput_out;
+- count = max - pos;
+- }
+
+- retval = in_file->f_op->sendfile(in_file, ppos, count, file_send_actor, out_file);
++ retval = vfs_sendfile(out_file, in_file, ppos, count, max);
+
+- if (retval > 0) {
+- current->rchar += retval;
+- current->wchar += retval;
+- }
+ current->syscr++;
+ current->syscw++;
+
+- if (*ppos > max)
+- retval = -EOVERFLOW;
+-
+ fput_out:
+ fput_light(out_file, fput_needed_out);
+ fput_in:
+diff -NurpP --minimal linux-2.6.20.4/fs/reiserfs/bitmap.c linux-2.6.20.4-vs2.2.0-rc20/fs/reiserfs/bitmap.c
+--- linux-2.6.20.4/fs/reiserfs/bitmap.c 2007-02-06 03:01:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/reiserfs/bitmap.c 2007-02-06 03:05:22 +0100
+@@ -13,6 +13,7 @@
+ #include <linux/reiserfs_fs_sb.h>
+ #include <linux/reiserfs_fs_i.h>
+ #include <linux/quotaops.h>
++#include <linux/vs_dlimit.h>
+
+ #define PREALLOCATION_SIZE 9
+
+@@ -425,8 +426,10 @@ static void _reiserfs_free_block(struct
+ set_sb_free_blocks(rs, sb_free_blocks(rs) + 1);
+
+ journal_mark_dirty(th, s, sbh);
+- if (for_unformatted)
++ if (for_unformatted) {
++ DLIMIT_FREE_BLOCK(inode, 1);
+ DQUOT_FREE_BLOCK_NODIRTY(inode, 1);
++ }
+ }
+
+ void reiserfs_free_block(struct reiserfs_transaction_handle *th,
+@@ -1034,6 +1037,7 @@ static inline int blocknrs_and_prealloc_
+ b_blocknr_t finish = SB_BLOCK_COUNT(s) - 1;
+ int passno = 0;
+ int nr_allocated = 0;
++ int blocks;
+
+ determine_prealloc_size(hint);
+ if (!hint->formatted_node) {
+@@ -1043,19 +1047,30 @@ static inline int blocknrs_and_prealloc_
+ "reiserquota: allocating %d blocks id=%u",
+ amount_needed, hint->inode->i_uid);
+ #endif
+- quota_ret =
+- DQUOT_ALLOC_BLOCK_NODIRTY(hint->inode, amount_needed);
+- if (quota_ret) /* Quota exceeded? */
++ quota_ret = DQUOT_ALLOC_BLOCK_NODIRTY(hint->inode,
++ amount_needed);
++ if (quota_ret)
+ return QUOTA_EXCEEDED;
++ if (DLIMIT_ALLOC_BLOCK(hint->inode, amount_needed)) {
++ DQUOT_FREE_BLOCK_NODIRTY(hint->inode,
++ amount_needed);
++ return NO_DISK_SPACE;
++ }
++
+ if (hint->preallocate && hint->prealloc_size) {
+ #ifdef REISERQUOTA_DEBUG
+ reiserfs_debug(s, REISERFS_DEBUG_CODE,
+ "reiserquota: allocating (prealloc) %d blocks id=%u",
+ hint->prealloc_size, hint->inode->i_uid);
+ #endif
+- quota_ret =
+- DQUOT_PREALLOC_BLOCK_NODIRTY(hint->inode,
+- hint->prealloc_size);
++ quota_ret = DQUOT_PREALLOC_BLOCK_NODIRTY(hint->inode,
++ hint->prealloc_size);
++ if (!quota_ret &&
++ DLIMIT_ALLOC_BLOCK(hint->inode, hint->prealloc_size)) {
++ DQUOT_FREE_BLOCK_NODIRTY(hint->inode,
++ hint->prealloc_size);
++ quota_ret = 1;
++ }
+ if (quota_ret)
+ hint->preallocate = hint->prealloc_size = 0;
+ }
+@@ -1087,7 +1102,10 @@ static inline int blocknrs_and_prealloc_
+ nr_allocated,
+ hint->inode->i_uid);
+ #endif
+- DQUOT_FREE_BLOCK_NODIRTY(hint->inode, amount_needed + hint->prealloc_size - nr_allocated); /* Free not allocated blocks */
++ /* Free not allocated blocks */
++ blocks = amount_needed + hint->prealloc_size - nr_allocated;
++ DLIMIT_FREE_BLOCK(hint->inode, blocks);
++ DQUOT_FREE_BLOCK_NODIRTY(hint->inode, blocks);
+ }
+ while (nr_allocated--)
+ reiserfs_free_block(hint->th, hint->inode,
+@@ -1118,10 +1136,10 @@ static inline int blocknrs_and_prealloc_
+ REISERFS_I(hint->inode)->i_prealloc_count,
+ hint->inode->i_uid);
+ #endif
+- DQUOT_FREE_BLOCK_NODIRTY(hint->inode, amount_needed +
+- hint->prealloc_size - nr_allocated -
+- REISERFS_I(hint->inode)->
+- i_prealloc_count);
++ blocks = amount_needed + hint->prealloc_size - nr_allocated -
++ REISERFS_I(hint->inode)->i_prealloc_count;
++ DLIMIT_FREE_BLOCK(hint->inode, blocks);
++ DQUOT_FREE_BLOCK_NODIRTY(hint->inode, blocks);
+ }
+
+ return CARRY_ON;
+diff -NurpP --minimal linux-2.6.20.4/fs/reiserfs/file.c linux-2.6.20.4-vs2.2.0-rc20/fs/reiserfs/file.c
+--- linux-2.6.20.4/fs/reiserfs/file.c 2007-02-06 03:01:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/reiserfs/file.c 2007-02-06 03:05:22 +0100
+@@ -1550,6 +1550,7 @@ const struct file_operations reiserfs_fi
+ .release = reiserfs_file_release,
+ .fsync = reiserfs_sync_file,
+ .sendfile = generic_file_sendfile,
++ .sendpage = generic_file_sendpage,
+ .aio_read = generic_file_aio_read,
+ .aio_write = generic_file_aio_write,
+ .splice_read = generic_file_splice_read,
+@@ -1564,4 +1565,5 @@ struct inode_operations reiserfs_file_in
+ .listxattr = reiserfs_listxattr,
+ .removexattr = reiserfs_removexattr,
+ .permission = reiserfs_permission,
++ .sync_flags = reiserfs_sync_flags,
+ };
+diff -NurpP --minimal linux-2.6.20.4/fs/reiserfs/inode.c linux-2.6.20.4-vs2.2.0-rc20/fs/reiserfs/inode.c
+--- linux-2.6.20.4/fs/reiserfs/inode.c 2007-02-06 03:01:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/reiserfs/inode.c 2007-02-06 03:05:22 +0100
+@@ -16,6 +16,8 @@
+ #include <linux/mpage.h>
+ #include <linux/writeback.h>
+ #include <linux/quotaops.h>
++#include <linux/vs_dlimit.h>
++#include <linux/vs_tag.h>
+
+ static int reiserfs_commit_write(struct file *f, struct page *page,
+ unsigned from, unsigned to);
+@@ -50,6 +52,7 @@ void reiserfs_delete_inode(struct inode
+ * stat data deletion */
+ if (!err)
+ DQUOT_FREE_INODE(inode);
++ DLIMIT_FREE_INODE(inode);
+
+ if (journal_end(&th, inode->i_sb, jbegin_count))
+ goto out;
+@@ -1112,6 +1115,8 @@ static void init_inode(struct inode *ino
+ struct buffer_head *bh;
+ struct item_head *ih;
+ __u32 rdev;
++ uid_t uid;
++ gid_t gid;
+ //int version = ITEM_VERSION_1;
+
+ bh = PATH_PLAST_BUFFER(path);
+@@ -1135,12 +1140,13 @@ static void init_inode(struct inode *ino
+ (struct stat_data_v1 *)B_I_PITEM(bh, ih);
+ unsigned long blocks;
+
++ uid = sd_v1_uid(sd);
++ gid = sd_v1_gid(sd);
++
+ set_inode_item_key_version(inode, KEY_FORMAT_3_5);
+ set_inode_sd_version(inode, STAT_DATA_V1);
+ inode->i_mode = sd_v1_mode(sd);
+ inode->i_nlink = sd_v1_nlink(sd);
+- inode->i_uid = sd_v1_uid(sd);
+- inode->i_gid = sd_v1_gid(sd);
+ inode->i_size = sd_v1_size(sd);
+ inode->i_atime.tv_sec = sd_v1_atime(sd);
+ inode->i_mtime.tv_sec = sd_v1_mtime(sd);
+@@ -1182,11 +1188,12 @@ static void init_inode(struct inode *ino
+ // (directories and symlinks)
+ struct stat_data *sd = (struct stat_data *)B_I_PITEM(bh, ih);
+
++ uid = sd_v2_uid(sd);
++ gid = sd_v2_gid(sd);
++
+ inode->i_mode = sd_v2_mode(sd);
+ inode->i_nlink = sd_v2_nlink(sd);
+- inode->i_uid = sd_v2_uid(sd);
+ inode->i_size = sd_v2_size(sd);
+- inode->i_gid = sd_v2_gid(sd);
+ inode->i_mtime.tv_sec = sd_v2_mtime(sd);
+ inode->i_atime.tv_sec = sd_v2_atime(sd);
+ inode->i_ctime.tv_sec = sd_v2_ctime(sd);
+@@ -1216,6 +1223,10 @@ static void init_inode(struct inode *ino
+ sd_attrs_to_i_attrs(sd_v2_attrs(sd), inode);
+ }
+
++ inode->i_uid = INOTAG_UID(DX_TAG(inode), uid, gid);
++ inode->i_gid = INOTAG_GID(DX_TAG(inode), uid, gid);
++ inode->i_tag = INOTAG_TAG(DX_TAG(inode), uid, gid, 0);
++
+ pathrelse(path);
+ if (S_ISREG(inode->i_mode)) {
+ inode->i_op = &reiserfs_file_inode_operations;
+@@ -1238,13 +1249,15 @@ static void init_inode(struct inode *ino
+ static void inode2sd(void *sd, struct inode *inode, loff_t size)
+ {
+ struct stat_data *sd_v2 = (struct stat_data *)sd;
++ uid_t uid = TAGINO_UID(DX_TAG(inode), inode->i_uid, inode->i_tag);
++ gid_t gid = TAGINO_GID(DX_TAG(inode), inode->i_gid, inode->i_tag);
+ __u16 flags;
+
++ set_sd_v2_uid(sd_v2, uid);
++ set_sd_v2_gid(sd_v2, gid);
+ set_sd_v2_mode(sd_v2, inode->i_mode);
+ set_sd_v2_nlink(sd_v2, inode->i_nlink);
+- set_sd_v2_uid(sd_v2, inode->i_uid);
+ set_sd_v2_size(sd_v2, size);
+- set_sd_v2_gid(sd_v2, inode->i_gid);
+ set_sd_v2_mtime(sd_v2, inode->i_mtime.tv_sec);
+ set_sd_v2_atime(sd_v2, inode->i_atime.tv_sec);
+ set_sd_v2_ctime(sd_v2, inode->i_ctime.tv_sec);
+@@ -1775,6 +1788,10 @@ int reiserfs_new_inode(struct reiserfs_t
+
+ BUG_ON(!th->t_trans_id);
+
++ if (DLIMIT_ALLOC_INODE(inode)) {
++ err = -ENOSPC;
++ goto out_bad_dlimit;
++ }
+ if (DQUOT_ALLOC_INODE(inode)) {
+ err = -EDQUOT;
+ goto out_end_trans;
+@@ -1960,6 +1977,9 @@ int reiserfs_new_inode(struct reiserfs_t
+ DQUOT_FREE_INODE(inode);
+
+ out_end_trans:
++ DLIMIT_FREE_INODE(inode);
++
++ out_bad_dlimit:
+ journal_end(th, th->t_super, th->t_blocks_allocated);
+ /* Drop can be outside and it needs more credits so it's better to have it outside */
+ DQUOT_DROP(inode);
+@@ -2699,6 +2719,14 @@ void sd_attrs_to_i_attrs(__u16 sd_attrs,
+ inode->i_flags |= S_IMMUTABLE;
+ else
+ inode->i_flags &= ~S_IMMUTABLE;
++ if (sd_attrs & REISERFS_IUNLINK_FL)
++ inode->i_flags |= S_IUNLINK;
++ else
++ inode->i_flags &= ~S_IUNLINK;
++ if (sd_attrs & REISERFS_BARRIER_FL)
++ inode->i_flags |= S_BARRIER;
++ else
++ inode->i_flags &= ~S_BARRIER;
+ if (sd_attrs & REISERFS_APPEND_FL)
+ inode->i_flags |= S_APPEND;
+ else
+@@ -2721,6 +2749,14 @@ void i_attrs_to_sd_attrs(struct inode *i
+ *sd_attrs |= REISERFS_IMMUTABLE_FL;
+ else
+ *sd_attrs &= ~REISERFS_IMMUTABLE_FL;
++ if (inode->i_flags & S_IUNLINK)
++ *sd_attrs |= REISERFS_IUNLINK_FL;
++ else
++ *sd_attrs &= ~REISERFS_IUNLINK_FL;
++ if (inode->i_flags & S_BARRIER)
++ *sd_attrs |= REISERFS_BARRIER_FL;
++ else
++ *sd_attrs &= ~REISERFS_BARRIER_FL;
+ if (inode->i_flags & S_SYNC)
+ *sd_attrs |= REISERFS_SYNC_FL;
+ else
+@@ -2900,6 +2936,22 @@ static ssize_t reiserfs_direct_IO(int rw
+ reiserfs_get_blocks_direct_io, NULL);
+ }
+
++int reiserfs_sync_flags(struct inode *inode)
++{
++ u16 oldflags, newflags;
++
++ oldflags = REISERFS_I(inode)->i_attrs;
++ newflags = oldflags;
++ i_attrs_to_sd_attrs(inode, &newflags);
++
++ if (oldflags ^ newflags) {
++ REISERFS_I(inode)->i_attrs = newflags;
++ inode->i_ctime = CURRENT_TIME_SEC;
++ mark_inode_dirty(inode);
++ }
++ return 0;
++}
++
+ int reiserfs_setattr(struct dentry *dentry, struct iattr *attr)
+ {
+ struct inode *inode = dentry->d_inode;
+@@ -2949,9 +3001,11 @@ int reiserfs_setattr(struct dentry *dent
+ }
+
+ error = inode_change_ok(inode, attr);
++
+ if (!error) {
+ if ((ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid) ||
+- (ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid)) {
++ (ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid) ||
++ (ia_valid & ATTR_TAG && attr->ia_tag != inode->i_tag)) {
+ error = reiserfs_chown_xattrs(inode, attr);
+
+ if (!error) {
+@@ -2981,6 +3035,9 @@ int reiserfs_setattr(struct dentry *dent
+ inode->i_uid = attr->ia_uid;
+ if (attr->ia_valid & ATTR_GID)
+ inode->i_gid = attr->ia_gid;
++ if ((attr->ia_valid & ATTR_TAG) &&
++ IS_TAGGED(inode))
++ inode->i_tag = attr->ia_tag;
+ mark_inode_dirty(inode);
+ error =
+ journal_end(&th, inode->i_sb, jbegin_count);
+diff -NurpP --minimal linux-2.6.20.4/fs/reiserfs/ioctl.c linux-2.6.20.4-vs2.2.0-rc20/fs/reiserfs/ioctl.c
+--- linux-2.6.20.4/fs/reiserfs/ioctl.c 2007-02-06 03:01:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/reiserfs/ioctl.c 2007-02-06 03:05:22 +0100
+@@ -4,6 +4,7 @@
+
+ #include <linux/capability.h>
+ #include <linux/fs.h>
++#include <linux/mount.h>
+ #include <linux/reiserfs_fs.h>
+ #include <linux/time.h>
+ #include <asm/uaccess.h>
+@@ -24,7 +25,7 @@ static int reiserfs_unpack(struct inode
+ int reiserfs_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
+ unsigned long arg)
+ {
+- unsigned int flags;
++ unsigned int flags, oldflags;
+
+ switch (cmd) {
+ case REISERFS_IOC_UNPACK:
+@@ -43,12 +44,14 @@ int reiserfs_ioctl(struct inode *inode,
+
+ flags = REISERFS_I(inode)->i_attrs;
+ i_attrs_to_sd_attrs(inode, (__u16 *) & flags);
++ flags &= REISERFS_FL_USER_VISIBLE;
+ return put_user(flags, (int __user *)arg);
+ case REISERFS_IOC_SETFLAGS:{
+ if (!reiserfs_attrs(inode->i_sb))
+ return -ENOTTY;
+
+- if (IS_RDONLY(inode))
++ if (IS_RDONLY(inode) ||
++ (filp && MNT_IS_RDONLY(filp->f_vfsmnt)))
+ return -EROFS;
+
+ if ((current->fsuid != inode->i_uid)
+@@ -58,10 +61,12 @@ int reiserfs_ioctl(struct inode *inode,
+ if (get_user(flags, (int __user *)arg))
+ return -EFAULT;
+
+- if (((flags ^ REISERFS_I(inode)->
+- i_attrs) & (REISERFS_IMMUTABLE_FL |
+- REISERFS_APPEND_FL))
+- && !capable(CAP_LINUX_IMMUTABLE))
++ oldflags = REISERFS_I(inode) -> i_attrs;
++ if (((oldflags & REISERFS_IMMUTABLE_FL) ||
++ ((flags ^ oldflags) &
++ (REISERFS_IMMUTABLE_FL | REISERFS_IUNLINK_FL |
++ REISERFS_APPEND_FL))) &&
++ !capable(CAP_LINUX_IMMUTABLE))
+ return -EPERM;
+
+ if ((flags & REISERFS_NOTAIL_FL) &&
+@@ -72,6 +77,9 @@ int reiserfs_ioctl(struct inode *inode,
+ if (result)
+ return result;
+ }
++
++ flags = flags & REISERFS_FL_USER_MODIFIABLE;
++ flags |= oldflags & ~REISERFS_FL_USER_MODIFIABLE;
+ sd_attrs_to_i_attrs(flags, inode);
+ REISERFS_I(inode)->i_attrs = flags;
+ inode->i_ctime = CURRENT_TIME_SEC;
+@@ -83,7 +91,8 @@ int reiserfs_ioctl(struct inode *inode,
+ case REISERFS_IOC_SETVERSION:
+ if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
+ return -EPERM;
+- if (IS_RDONLY(inode))
++ if (IS_RDONLY(inode) ||
++ (filp && MNT_IS_RDONLY(filp->f_vfsmnt)))
+ return -EROFS;
+ if (get_user(inode->i_generation, (int __user *)arg))
+ return -EFAULT;
+diff -NurpP --minimal linux-2.6.20.4/fs/reiserfs/namei.c linux-2.6.20.4-vs2.2.0-rc20/fs/reiserfs/namei.c
+--- linux-2.6.20.4/fs/reiserfs/namei.c 2007-02-06 03:01:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/reiserfs/namei.c 2007-02-06 03:05:22 +0100
+@@ -18,6 +18,7 @@
+ #include <linux/reiserfs_xattr.h>
+ #include <linux/smp_lock.h>
+ #include <linux/quotaops.h>
++#include <linux/vs_tag.h>
+
+ #define INC_DIR_INODE_NLINK(i) if (i->i_nlink != 1) { inc_nlink(i); if (i->i_nlink >= REISERFS_LINK_MAX) i->i_nlink=1; }
+ #define DEC_DIR_INODE_NLINK(i) if (i->i_nlink != 1) drop_nlink(i);
+@@ -361,6 +362,7 @@ static struct dentry *reiserfs_lookup(st
+ reiserfs_write_unlock(dir->i_sb);
+ return ERR_PTR(-EACCES);
+ }
++ dx_propagate_tag(nd, inode);
+
+ /* Propogate the priv_object flag so we know we're in the priv tree */
+ if (is_reiserfs_priv_object(dir))
+@@ -596,6 +598,7 @@ static int new_inode_init(struct inode *
+ } else {
+ inode->i_gid = current->fsgid;
+ }
++ inode->i_tag = dx_current_fstag(inode->i_sb);
+ DQUOT_INIT(inode);
+ return 0;
+ }
+@@ -1542,6 +1545,7 @@ struct inode_operations reiserfs_dir_ino
+ .listxattr = reiserfs_listxattr,
+ .removexattr = reiserfs_removexattr,
+ .permission = reiserfs_permission,
++ .sync_flags = reiserfs_sync_flags,
+ };
+
+ /*
+@@ -1558,6 +1562,7 @@ struct inode_operations reiserfs_symlink
+ .listxattr = reiserfs_listxattr,
+ .removexattr = reiserfs_removexattr,
+ .permission = reiserfs_permission,
++ .sync_flags = reiserfs_sync_flags,
+
+ };
+
+@@ -1571,5 +1576,6 @@ struct inode_operations reiserfs_special
+ .listxattr = reiserfs_listxattr,
+ .removexattr = reiserfs_removexattr,
+ .permission = reiserfs_permission,
++ .sync_flags = reiserfs_sync_flags,
+
+ };
+diff -NurpP --minimal linux-2.6.20.4/fs/reiserfs/stree.c linux-2.6.20.4-vs2.2.0-rc20/fs/reiserfs/stree.c
+--- linux-2.6.20.4/fs/reiserfs/stree.c 2007-02-06 03:01:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/reiserfs/stree.c 2007-02-06 03:05:22 +0100
+@@ -56,6 +56,7 @@
+ #include <linux/smp_lock.h>
+ #include <linux/buffer_head.h>
+ #include <linux/quotaops.h>
++#include <linux/vs_dlimit.h>
+
+ /* Does the buffer contain a disk block which is in the tree. */
+ inline int B_IS_IN_TREE(const struct buffer_head *p_s_bh)
+@@ -1297,6 +1298,7 @@ int reiserfs_delete_item(struct reiserfs
+ "reiserquota delete_item(): freeing %u, id=%u type=%c",
+ quota_cut_bytes, p_s_inode->i_uid, head2type(&s_ih));
+ #endif
++ DLIMIT_FREE_SPACE(p_s_inode, quota_cut_bytes);
+ DQUOT_FREE_SPACE_NODIRTY(p_s_inode, quota_cut_bytes);
+
+ /* Return deleted body length */
+@@ -1385,6 +1387,7 @@ void reiserfs_delete_solid_item(struct r
+ #endif
+ DQUOT_FREE_SPACE_NODIRTY(inode,
+ quota_cut_bytes);
++ DLIMIT_FREE_SPACE(inode, quota_cut_bytes);
+ }
+ break;
+ }
+@@ -1738,6 +1741,7 @@ int reiserfs_cut_from_item(struct reiser
+ "reiserquota cut_from_item(): freeing %u id=%u type=%c",
+ quota_cut_bytes, p_s_inode->i_uid, '?');
+ #endif
++ DLIMIT_FREE_SPACE(p_s_inode, quota_cut_bytes);
+ DQUOT_FREE_SPACE_NODIRTY(p_s_inode, quota_cut_bytes);
+ return n_ret_value;
+ }
+@@ -1979,6 +1983,11 @@ int reiserfs_paste_into_item(struct reis
+ pathrelse(p_s_search_path);
+ return -EDQUOT;
+ }
++ if (DLIMIT_ALLOC_SPACE(inode, n_pasted_size)) {
++ DQUOT_FREE_SPACE_NODIRTY(inode, n_pasted_size);
++ pathrelse(p_s_search_path);
++ return -ENOSPC;
++ }
+ init_tb_struct(th, &s_paste_balance, th->t_super, p_s_search_path,
+ n_pasted_size);
+ #ifdef DISPLACE_NEW_PACKING_LOCALITIES
+@@ -2031,6 +2040,7 @@ int reiserfs_paste_into_item(struct reis
+ n_pasted_size, inode->i_uid,
+ key2type(&(p_s_key->on_disk_key)));
+ #endif
++ DLIMIT_FREE_SPACE(inode, n_pasted_size);
+ DQUOT_FREE_SPACE_NODIRTY(inode, n_pasted_size);
+ return retval;
+ }
+@@ -2068,6 +2078,11 @@ int reiserfs_insert_item(struct reiserfs
+ pathrelse(p_s_path);
+ return -EDQUOT;
+ }
++ if (DLIMIT_ALLOC_SPACE(inode, quota_bytes)) {
++ DQUOT_FREE_SPACE_NODIRTY(inode, quota_bytes);
++ pathrelse(p_s_path);
++ return -ENOSPC;
++ }
+ }
+ init_tb_struct(th, &s_ins_balance, th->t_super, p_s_path,
+ IH_SIZE + ih_item_len(p_s_ih));
+@@ -2115,7 +2130,9 @@ int reiserfs_insert_item(struct reiserfs
+ "reiserquota insert_item(): freeing %u id=%u type=%c",
+ quota_bytes, inode->i_uid, head2type(p_s_ih));
+ #endif
+- if (inode)
++ if (inode) {
++ DLIMIT_FREE_SPACE(inode, quota_bytes);
+ DQUOT_FREE_SPACE_NODIRTY(inode, quota_bytes);
++ }
+ return retval;
+ }
+diff -NurpP --minimal linux-2.6.20.4/fs/reiserfs/super.c linux-2.6.20.4-vs2.2.0-rc20/fs/reiserfs/super.c
+--- linux-2.6.20.4/fs/reiserfs/super.c 2007-02-06 03:01:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/reiserfs/super.c 2007-02-06 03:05:22 +0100
+@@ -885,6 +885,14 @@ static int reiserfs_parse_options(struct
+ {"user_xattr",.setmask = 1 << REISERFS_UNSUPPORTED_OPT},
+ {"nouser_xattr",.clrmask = 1 << REISERFS_UNSUPPORTED_OPT},
+ #endif
++#ifndef CONFIG_TAGGING_NONE
++ {"tagxid",.setmask = 1 << REISERFS_TAGGED},
++ {"tag",.setmask = 1 << REISERFS_TAGGED},
++ {"notag",.clrmask = 1 << REISERFS_TAGGED},
++#endif
++#ifdef CONFIG_PROPAGATE
++ {"tag",.arg_required = 'T',.values = NULL},
++#endif
+ #ifdef CONFIG_REISERFS_FS_POSIX_ACL
+ {"acl",.setmask = 1 << REISERFS_POSIXACL},
+ {"noacl",.clrmask = 1 << REISERFS_POSIXACL},
+@@ -1146,6 +1154,12 @@ static int reiserfs_remount(struct super
+ return -EINVAL;
+ }
+
++ if ((mount_options & (1 << REISERFS_TAGGED)) &&
++ !(s->s_flags & MS_TAGGED)) {
++ reiserfs_warning(s, "reiserfs: tagging not permitted on remount.");
++ return -EINVAL;
++ }
++
+ handle_attrs(s);
+
+ /* Add options that are safe here */
+@@ -1593,6 +1607,10 @@ static int reiserfs_fill_super(struct su
+ goto error;
+ }
+
++ /* map mount option tagxid */
++ if (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_TAGGED))
++ s->s_flags |= MS_TAGGED;
++
+ rs = SB_DISK_SUPER_BLOCK(s);
+ /* Let's do basic sanity check to verify that underlying device is not
+ smaller than the filesystem. If the check fails then abort and scream,
+diff -NurpP --minimal linux-2.6.20.4/fs/reiserfs/xattr.c linux-2.6.20.4-vs2.2.0-rc20/fs/reiserfs/xattr.c
+--- linux-2.6.20.4/fs/reiserfs/xattr.c 2007-02-06 03:01:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/reiserfs/xattr.c 2007-02-06 03:05:22 +0100
+@@ -35,6 +35,7 @@
+ #include <linux/namei.h>
+ #include <linux/errno.h>
+ #include <linux/fs.h>
++#include <linux/mount.h>
+ #include <linux/file.h>
+ #include <linux/pagemap.h>
+ #include <linux/xattr.h>
+@@ -823,7 +824,7 @@ int reiserfs_delete_xattrs(struct inode
+ if (dir->d_inode->i_nlink <= 2) {
+ root = get_xa_root(inode->i_sb);
+ reiserfs_write_lock_xattrs(inode->i_sb);
+- err = vfs_rmdir(root->d_inode, dir);
++ err = vfs_rmdir(root->d_inode, dir, NULL);
+ reiserfs_write_unlock_xattrs(inode->i_sb);
+ dput(root);
+ } else {
+diff -NurpP --minimal linux-2.6.20.4/fs/stat.c linux-2.6.20.4-vs2.2.0-rc20/fs/stat.c
+--- linux-2.6.20.4/fs/stat.c 2007-02-06 03:01:30 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/stat.c 2007-02-06 03:05:22 +0100
+@@ -27,6 +27,7 @@ void generic_fillattr(struct inode *inod
+ stat->nlink = inode->i_nlink;
+ stat->uid = inode->i_uid;
+ stat->gid = inode->i_gid;
++ stat->tag = inode->i_tag;
+ stat->rdev = inode->i_rdev;
+ stat->atime = inode->i_atime;
+ stat->mtime = inode->i_mtime;
+diff -NurpP --minimal linux-2.6.20.4/fs/super.c linux-2.6.20.4-vs2.2.0-rc20/fs/super.c
+--- linux-2.6.20.4/fs/super.c 2007-02-06 03:01:30 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/super.c 2007-02-06 03:05:22 +0100
+@@ -37,6 +37,9 @@
+ #include <linux/idr.h>
+ #include <linux/kobject.h>
+ #include <linux/mutex.h>
++#include <linux/devpts_fs.h>
++#include <linux/proc_fs.h>
++#include <linux/vs_context.h>
+ #include <asm/uaccess.h>
+
+
+@@ -871,6 +874,7 @@ struct vfsmount *
+ vfs_kern_mount(struct file_system_type *type, int flags, const char *name, void *data)
+ {
+ struct vfsmount *mnt;
++ struct super_block *sb;
+ char *secdata = NULL;
+ int error;
+
+@@ -896,7 +900,14 @@ vfs_kern_mount(struct file_system_type *
+ if (error < 0)
+ goto out_free_secdata;
+
+- error = security_sb_kern_mount(mnt->mnt_sb, secdata);
++ sb = mnt->mnt_sb;
++ error = -EPERM;
++ if (!vx_capable(CAP_SYS_ADMIN, VXC_BINARY_MOUNT) && !sb->s_bdev &&
++ (sb->s_magic != PROC_SUPER_MAGIC) &&
++ (sb->s_magic != DEVPTS_SUPER_MAGIC))
++ goto out_sb;
++
++ error = security_sb_kern_mount(sb, secdata);
+ if (error)
+ goto out_sb;
+
+@@ -924,9 +935,17 @@ do_kern_mount(const char *fstype, int fl
+ {
+ struct file_system_type *type = get_fs_type(fstype);
+ struct vfsmount *mnt;
++
+ if (!type)
+ return ERR_PTR(-ENODEV);
++
++ mnt = ERR_PTR(-EPERM);
++ if ((type->fs_flags & FS_BINARY_MOUNTDATA) &&
++ !vx_capable(CAP_SYS_ADMIN, VXC_BINARY_MOUNT))
++ goto out_put;
++
+ mnt = vfs_kern_mount(type, flags, name, data);
++out_put:
+ put_filesystem(type);
+ return mnt;
+ }
+diff -NurpP --minimal linux-2.6.20.4/fs/sysfs/mount.c linux-2.6.20.4-vs2.2.0-rc20/fs/sysfs/mount.c
+--- linux-2.6.20.4/fs/sysfs/mount.c 2007-02-06 03:01:30 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/sysfs/mount.c 2007-02-06 03:05:22 +0100
+@@ -11,8 +11,6 @@
+
+ #include "sysfs.h"
+
+-/* Random magic number */
+-#define SYSFS_MAGIC 0x62656572
+
+ struct vfsmount *sysfs_mount;
+ struct super_block * sysfs_sb = NULL;
+@@ -38,7 +36,7 @@ static int sysfs_fill_super(struct super
+
+ sb->s_blocksize = PAGE_CACHE_SIZE;
+ sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
+- sb->s_magic = SYSFS_MAGIC;
++ sb->s_magic = SYSFS_SUPER_MAGIC;
+ sb->s_op = &sysfs_ops;
+ sb->s_time_gran = 1;
+ sysfs_sb = sb;
+diff -NurpP --minimal linux-2.6.20.4/fs/utimes.c linux-2.6.20.4-vs2.2.0-rc20/fs/utimes.c
+--- linux-2.6.20.4/fs/utimes.c 2007-02-06 03:01:31 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/utimes.c 2007-03-17 23:25:21 +0100
+@@ -4,6 +4,8 @@
+ #include <linux/namei.h>
+ #include <linux/sched.h>
+ #include <linux/utime.h>
++#include <linux/mount.h>
++#include <linux/vs_cowbl.h>
+ #include <asm/uaccess.h>
+ #include <asm/unistd.h>
+
+@@ -30,11 +32,11 @@ asmlinkage long sys_utime(char __user *
+ error = user_path_walk(filename, &nd);
+ if (error)
+ goto out;
+- inode = nd.dentry->d_inode;
+
+- error = -EROFS;
+- if (IS_RDONLY(inode))
++ error = cow_check_and_break(&nd);
++ if (error)
+ goto dput_and_out;
++ inode = nd.dentry->d_inode;
+
+ /* Don't worry, the checks are done in inode_change_ok() */
+ newattrs.ia_valid = ATTR_CTIME | ATTR_MTIME | ATTR_ATIME;
+@@ -84,14 +86,13 @@ long do_utimes(int dfd, char __user *fil
+ struct iattr newattrs;
+
+ error = __user_walk_fd(dfd, filename, LOOKUP_FOLLOW, &nd);
+-
+ if (error)
+ goto out;
+- inode = nd.dentry->d_inode;
+
+- error = -EROFS;
+- if (IS_RDONLY(inode))
++ error = cow_check_and_break(&nd);
++ if (error)
+ goto dput_and_out;
++ inode = nd.dentry->d_inode;
+
+ /* Don't worry, the checks are done in inode_change_ok() */
+ newattrs.ia_valid = ATTR_CTIME | ATTR_MTIME | ATTR_ATIME;
+diff -NurpP --minimal linux-2.6.20.4/fs/xattr.c linux-2.6.20.4-vs2.2.0-rc20/fs/xattr.c
+--- linux-2.6.20.4/fs/xattr.c 2007-02-06 03:01:31 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/xattr.c 2007-02-06 03:05:22 +0100
+@@ -18,6 +18,7 @@
+ #include <linux/module.h>
+ #include <linux/fsnotify.h>
+ #include <linux/audit.h>
++#include <linux/mount.h>
+ #include <asm/uaccess.h>
+
+
+@@ -195,7 +196,7 @@ EXPORT_SYMBOL_GPL(vfs_removexattr);
+ */
+ static long
+ setxattr(struct dentry *d, char __user *name, void __user *value,
+- size_t size, int flags)
++ size_t size, int flags, struct vfsmount *mnt)
+ {
+ int error;
+ void *kvalue = NULL;
+@@ -222,6 +223,9 @@ setxattr(struct dentry *d, char __user *
+ }
+ }
+
++ if (MNT_IS_RDONLY(mnt))
++ return -EROFS;
++
+ error = vfs_setxattr(d, kname, kvalue, size, flags);
+ kfree(kvalue);
+ return error;
+@@ -237,7 +241,7 @@ sys_setxattr(char __user *path, char __u
+ error = user_path_walk(path, &nd);
+ if (error)
+ return error;
+- error = setxattr(nd.dentry, name, value, size, flags);
++ error = setxattr(nd.dentry, name, value, size, flags, nd.mnt);
+ path_release(&nd);
+ return error;
+ }
+@@ -252,7 +256,7 @@ sys_lsetxattr(char __user *path, char __
+ error = user_path_walk_link(path, &nd);
+ if (error)
+ return error;
+- error = setxattr(nd.dentry, name, value, size, flags);
++ error = setxattr(nd.dentry, name, value, size, flags, nd.mnt);
+ path_release(&nd);
+ return error;
+ }
+@@ -270,7 +274,7 @@ sys_fsetxattr(int fd, char __user *name,
+ return error;
+ dentry = f->f_path.dentry;
+ audit_inode(NULL, dentry->d_inode);
+- error = setxattr(dentry, name, value, size, flags);
++ error = setxattr(dentry, name, value, size, flags, f->f_vfsmnt);
+ fput(f);
+ return error;
+ }
+@@ -432,7 +436,7 @@ sys_flistxattr(int fd, char __user *list
+ * Extended attribute REMOVE operations
+ */
+ static long
+-removexattr(struct dentry *d, char __user *name)
++removexattr(struct dentry *d, char __user *name, struct vfsmount *mnt)
+ {
+ int error;
+ char kname[XATTR_NAME_MAX + 1];
+@@ -443,6 +447,9 @@ removexattr(struct dentry *d, char __use
+ if (error < 0)
+ return error;
+
++ if (MNT_IS_RDONLY(mnt))
++ return -EROFS;
++
+ return vfs_removexattr(d, kname);
+ }
+
+@@ -455,7 +462,7 @@ sys_removexattr(char __user *path, char
+ error = user_path_walk(path, &nd);
+ if (error)
+ return error;
+- error = removexattr(nd.dentry, name);
++ error = removexattr(nd.dentry, name, nd.mnt);
+ path_release(&nd);
+ return error;
+ }
+@@ -469,7 +476,7 @@ sys_lremovexattr(char __user *path, char
+ error = user_path_walk_link(path, &nd);
+ if (error)
+ return error;
+- error = removexattr(nd.dentry, name);
++ error = removexattr(nd.dentry, name, nd.mnt);
+ path_release(&nd);
+ return error;
+ }
+@@ -486,7 +493,7 @@ sys_fremovexattr(int fd, char __user *na
+ return error;
+ dentry = f->f_path.dentry;
+ audit_inode(NULL, dentry->d_inode);
+- error = removexattr(dentry, name);
++ error = removexattr(dentry, name, f->f_vfsmnt);
+ fput(f);
+ return error;
+ }
+diff -NurpP --minimal linux-2.6.20.4/fs/xfs/linux-2.6/xfs_file.c linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/linux-2.6/xfs_file.c
+--- linux-2.6.20.4/fs/xfs/linux-2.6/xfs_file.c 2007-02-06 03:01:31 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/linux-2.6/xfs_file.c 2007-02-06 03:05:22 +0100
+@@ -453,6 +453,7 @@ const struct file_operations xfs_file_op
+ .aio_read = xfs_file_aio_read,
+ .aio_write = xfs_file_aio_write,
+ .sendfile = xfs_file_sendfile,
++ .sendpage = generic_file_sendpage,
+ .splice_read = xfs_file_splice_read,
+ .splice_write = xfs_file_splice_write,
+ .unlocked_ioctl = xfs_file_ioctl,
+@@ -476,6 +477,7 @@ const struct file_operations xfs_invis_f
+ .aio_read = xfs_file_aio_read_invis,
+ .aio_write = xfs_file_aio_write_invis,
+ .sendfile = xfs_file_sendfile_invis,
++ .sendpage = generic_file_sendpage,
+ .splice_read = xfs_file_splice_read_invis,
+ .splice_write = xfs_file_splice_write_invis,
+ .unlocked_ioctl = xfs_file_ioctl_invis,
+diff -NurpP --minimal linux-2.6.20.4/fs/xfs/linux-2.6/xfs_ioctl.c linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/linux-2.6/xfs_ioctl.c
+--- linux-2.6.20.4/fs/xfs/linux-2.6/xfs_ioctl.c 2007-02-06 03:01:31 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/linux-2.6/xfs_ioctl.c 2007-02-06 03:05:22 +0100
+@@ -1100,6 +1100,8 @@ xfs_ioc_fsgeometry(
+ #define LINUX_XFLAG_APPEND 0x00000020 /* writes to file may only append */
+ #define LINUX_XFLAG_NODUMP 0x00000040 /* do not dump file */
+ #define LINUX_XFLAG_NOATIME 0x00000080 /* do not update atime */
++#define LINUX_XFLAG_BARRIER 0x04000000 /* chroot() barrier */
++#define LINUX_XFLAG_IUNLINK 0x08000000 /* immutable unlink */
+
+ STATIC unsigned int
+ xfs_merge_ioc_xflags(
+@@ -1140,6 +1142,10 @@ xfs_di2lxflags(
+
+ if (di_flags & XFS_DIFLAG_IMMUTABLE)
+ flags |= LINUX_XFLAG_IMMUTABLE;
++ if (di_flags & XFS_DIFLAG_IUNLINK)
++ flags |= LINUX_XFLAG_IUNLINK;
++ if (di_flags & XFS_DIFLAG_BARRIER)
++ flags |= LINUX_XFLAG_BARRIER;
+ if (di_flags & XFS_DIFLAG_APPEND)
+ flags |= LINUX_XFLAG_APPEND;
+ if (di_flags & XFS_DIFLAG_SYNC)
+diff -NurpP --minimal linux-2.6.20.4/fs/xfs/linux-2.6/xfs_iops.c linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/linux-2.6/xfs_iops.c
+--- linux-2.6.20.4/fs/xfs/linux-2.6/xfs_iops.c 2006-11-30 21:19:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/linux-2.6/xfs_iops.c 2007-02-06 03:05:22 +0100
+@@ -53,6 +53,7 @@
+ #include <linux/xattr.h>
+ #include <linux/namei.h>
+ #include <linux/security.h>
++#include <linux/vs_tag.h>
+
+ /*
+ * Get a XFS inode from a given vnode.
+@@ -402,6 +403,7 @@ xfs_vn_lookup(
+ d_add(dentry, NULL);
+ return NULL;
+ }
++ dx_propagate_tag(nd, vn_to_inode(cvp));
+
+ return d_splice_alias(vn_to_inode(cvp), dentry);
+ }
+@@ -659,6 +661,10 @@ xfs_vn_setattr(
+ int flags = 0;
+ int error;
+
++ error = inode_change_ok(inode, attr);
++ if (error)
++ return error;
++
+ if (ia_valid & ATTR_UID) {
+ vattr.va_mask |= XFS_AT_UID;
+ vattr.va_uid = attr->ia_uid;
+@@ -667,6 +673,10 @@ xfs_vn_setattr(
+ vattr.va_mask |= XFS_AT_GID;
+ vattr.va_gid = attr->ia_gid;
+ }
++ if ((ia_valid & ATTR_TAG) && IS_TAGGED(inode)) {
++ vattr.va_mask |= XFS_AT_TAG;
++ vattr.va_tag = attr->ia_tag;
++ }
+ if (ia_valid & ATTR_SIZE) {
+ vattr.va_mask |= XFS_AT_SIZE;
+ vattr.va_size = attr->ia_size;
+@@ -712,6 +722,42 @@ xfs_vn_truncate(
+ }
+
+ STATIC int
++xfs_vn_sync_flags(struct inode *inode)
++{
++ unsigned int oldflags, newflags;
++ int flags = 0;
++ int error;
++ bhv_vattr_t vattr;
++ bhv_vnode_t *vp = vn_from_inode(inode);
++
++ memset(&vattr, 0, sizeof vattr);
++
++ vattr.va_mask = XFS_AT_XFLAGS;
++ error = bhv_vop_getattr(vp, &vattr, 0, NULL);
++
++ if (error)
++ return error;
++ oldflags = vattr.va_xflags;
++ newflags = oldflags & ~(XFS_XFLAG_IMMUTABLE |
++ XFS_XFLAG_IUNLINK | XFS_XFLAG_BARRIER);
++
++ if (IS_IMMUTABLE(inode))
++ newflags |= XFS_XFLAG_IMMUTABLE;
++ if (IS_IUNLINK(inode))
++ newflags |= XFS_XFLAG_IUNLINK;
++ if (IS_BARRIER(inode))
++ newflags |= XFS_XFLAG_BARRIER;
++
++ if (oldflags ^ newflags) {
++ vattr.va_xflags = newflags;
++ vattr.va_mask |= XFS_AT_XFLAGS;
++ error = bhv_vop_setattr(vp, &vattr, flags, NULL);
++ }
++ vn_revalidate(vp);
++ return error;
++}
++
++STATIC int
+ xfs_vn_setxattr(
+ struct dentry *dentry,
+ const char *name,
+@@ -824,6 +870,7 @@ struct inode_operations xfs_inode_operat
+ .getxattr = xfs_vn_getxattr,
+ .listxattr = xfs_vn_listxattr,
+ .removexattr = xfs_vn_removexattr,
++ .sync_flags = xfs_vn_sync_flags,
+ };
+
+ struct inode_operations xfs_dir_inode_operations = {
+@@ -843,6 +890,7 @@ struct inode_operations xfs_dir_inode_op
+ .getxattr = xfs_vn_getxattr,
+ .listxattr = xfs_vn_listxattr,
+ .removexattr = xfs_vn_removexattr,
++ .sync_flags = xfs_vn_sync_flags,
+ };
+
+ struct inode_operations xfs_symlink_inode_operations = {
+@@ -856,4 +904,5 @@ struct inode_operations xfs_symlink_inod
+ .getxattr = xfs_vn_getxattr,
+ .listxattr = xfs_vn_listxattr,
+ .removexattr = xfs_vn_removexattr,
++ .sync_flags = xfs_vn_sync_flags,
+ };
+diff -NurpP --minimal linux-2.6.20.4/fs/xfs/linux-2.6/xfs_linux.h linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/linux-2.6/xfs_linux.h
+--- linux-2.6.20.4/fs/xfs/linux-2.6/xfs_linux.h 2006-11-30 21:19:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/linux-2.6/xfs_linux.h 2007-02-06 03:05:22 +0100
+@@ -139,6 +139,7 @@ BUFFER_FNS(PrivateStart, unwritten);
+ #define current_pid() (current->pid)
+ #define current_fsuid(cred) (current->fsuid)
+ #define current_fsgid(cred) (current->fsgid)
++#define current_fstag(cred,vp) (dx_current_fstag(vn_to_inode(vp)->i_sb))
+ #define current_test_flags(f) (current->flags & (f))
+ #define current_set_flags_nested(sp, f) \
+ (*(sp) = current->flags, current->flags |= (f))
+diff -NurpP --minimal linux-2.6.20.4/fs/xfs/linux-2.6/xfs_super.c linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/linux-2.6/xfs_super.c
+--- linux-2.6.20.4/fs/xfs/linux-2.6/xfs_super.c 2007-02-06 03:01:31 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/linux-2.6/xfs_super.c 2007-02-06 03:05:22 +0100
+@@ -159,6 +159,7 @@ xfs_revalidate_inode(
+ inode->i_nlink = ip->i_d.di_nlink;
+ inode->i_uid = ip->i_d.di_uid;
+ inode->i_gid = ip->i_d.di_gid;
++ inode->i_tag = ip->i_d.di_tag;
+
+ switch (inode->i_mode & S_IFMT) {
+ case S_IFBLK:
+@@ -186,6 +187,14 @@ xfs_revalidate_inode(
+ inode->i_flags |= S_IMMUTABLE;
+ else
+ inode->i_flags &= ~S_IMMUTABLE;
++ if (ip->i_d.di_flags & XFS_DIFLAG_IUNLINK)
++ inode->i_flags |= S_IUNLINK;
++ else
++ inode->i_flags &= ~S_IUNLINK;
++ if (ip->i_d.di_flags & XFS_DIFLAG_BARRIER)
++ inode->i_flags |= S_BARRIER;
++ else
++ inode->i_flags &= ~S_BARRIER;
+ if (ip->i_d.di_flags & XFS_DIFLAG_APPEND)
+ inode->i_flags |= S_APPEND;
+ else
+@@ -709,6 +718,12 @@ xfs_fs_remount(
+ int error;
+
+ error = bhv_vfs_parseargs(vfsp, options, args, 1);
++ if ((args->flags2 & XFSMNT2_TAGGED) &&
++ !(sb->s_flags & MS_TAGGED)) {
++ printk("XFS: %s: tagging not permitted on remount.\n",
++ sb->s_id);
++ error = EINVAL;
++ }
+ if (!error)
+ error = bhv_vfs_mntupdate(vfsp, flags, args);
+ kmem_free(args, sizeof(*args));
+diff -NurpP --minimal linux-2.6.20.4/fs/xfs/linux-2.6/xfs_vnode.c linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/linux-2.6/xfs_vnode.c
+--- linux-2.6.20.4/fs/xfs/linux-2.6/xfs_vnode.c 2006-11-30 21:19:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/linux-2.6/xfs_vnode.c 2007-02-06 03:05:22 +0100
+@@ -119,6 +119,7 @@ vn_revalidate_core(
+ inode->i_nlink = vap->va_nlink;
+ inode->i_uid = vap->va_uid;
+ inode->i_gid = vap->va_gid;
++ inode->i_tag = vap->va_tag;
+ inode->i_blocks = vap->va_nblocks;
+ inode->i_mtime = vap->va_mtime;
+ inode->i_ctime = vap->va_ctime;
+@@ -126,6 +127,14 @@ vn_revalidate_core(
+ inode->i_flags |= S_IMMUTABLE;
+ else
+ inode->i_flags &= ~S_IMMUTABLE;
++ if (vap->va_xflags & XFS_XFLAG_IUNLINK)
++ inode->i_flags |= S_IUNLINK;
++ else
++ inode->i_flags &= ~S_IUNLINK;
++ if (vap->va_xflags & XFS_XFLAG_BARRIER)
++ inode->i_flags |= S_BARRIER;
++ else
++ inode->i_flags &= ~S_BARRIER;
+ if (vap->va_xflags & XFS_XFLAG_APPEND)
+ inode->i_flags |= S_APPEND;
+ else
+diff -NurpP --minimal linux-2.6.20.4/fs/xfs/linux-2.6/xfs_vnode.h linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/linux-2.6/xfs_vnode.h
+--- linux-2.6.20.4/fs/xfs/linux-2.6/xfs_vnode.h 2006-11-30 21:19:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/linux-2.6/xfs_vnode.h 2007-02-06 03:05:22 +0100
+@@ -350,6 +350,7 @@ typedef struct bhv_vattr {
+ xfs_nlink_t va_nlink; /* number of references to file */
+ uid_t va_uid; /* owner user id */
+ gid_t va_gid; /* owner group id */
++ tag_t va_tag; /* owner group id */
+ xfs_ino_t va_nodeid; /* file id */
+ xfs_off_t va_size; /* file size in bytes */
+ u_long va_blocksize; /* blocksize preferred for i/o */
+@@ -398,13 +399,15 @@ typedef struct bhv_vattr {
+ #define XFS_AT_PROJID 0x04000000
+ #define XFS_AT_SIZE_NOPERM 0x08000000
+ #define XFS_AT_GENCOUNT 0x10000000
++#define XFS_AT_TAG 0x20000000
+
+ #define XFS_AT_ALL (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
+ XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
+ XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\
+ XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|XFS_AT_MAC|\
+ XFS_AT_ACL|XFS_AT_CAP|XFS_AT_INF|XFS_AT_XFLAGS|XFS_AT_EXTSIZE|\
+- XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_PROJID|XFS_AT_GENCOUNT)
++ XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_PROJID|XFS_AT_GENCOUNT\
++ XFS_AT_TAG)
+
+ #define XFS_AT_STAT (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
+ XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
+diff -NurpP --minimal linux-2.6.20.4/fs/xfs/quota/xfs_qm_syscalls.c linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/quota/xfs_qm_syscalls.c
+--- linux-2.6.20.4/fs/xfs/quota/xfs_qm_syscalls.c 2006-09-20 16:58:40 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/quota/xfs_qm_syscalls.c 2007-02-06 03:05:22 +0100
+@@ -17,6 +17,7 @@
+ */
+
+ #include <linux/capability.h>
++#include <linux/vs_context.h>
+
+ #include "xfs.h"
+ #include "xfs_fs.h"
+@@ -213,7 +214,7 @@ xfs_qm_scall_quotaoff(
+ xfs_qoff_logitem_t *qoffstart;
+ int nculprits;
+
+- if (!force && !capable(CAP_SYS_ADMIN))
++ if (!force && !vx_capable(CAP_SYS_ADMIN, VXC_QUOTA_CTL))
+ return XFS_ERROR(EPERM);
+ /*
+ * No file system can have quotas enabled on disk but not in core.
+@@ -382,7 +383,7 @@ xfs_qm_scall_trunc_qfiles(
+ int error;
+ xfs_inode_t *qip;
+
+- if (!capable(CAP_SYS_ADMIN))
++ if (!vx_capable(CAP_SYS_ADMIN, VXC_QUOTA_CTL))
+ return XFS_ERROR(EPERM);
+ error = 0;
+ if (!XFS_SB_VERSION_HASQUOTA(&mp->m_sb) || flags == 0) {
+@@ -427,7 +428,7 @@ xfs_qm_scall_quotaon(
+ uint accflags;
+ __int64_t sbflags;
+
+- if (!capable(CAP_SYS_ADMIN))
++ if (!vx_capable(CAP_SYS_ADMIN, VXC_QUOTA_CTL))
+ return XFS_ERROR(EPERM);
+
+ flags &= (XFS_ALL_QUOTA_ACCT | XFS_ALL_QUOTA_ENFD);
+@@ -598,7 +599,7 @@ xfs_qm_scall_setqlim(
+ int error;
+ xfs_qcnt_t hard, soft;
+
+- if (!capable(CAP_SYS_ADMIN))
++ if (!vx_capable(CAP_SYS_ADMIN, VXC_QUOTA_CTL))
+ return XFS_ERROR(EPERM);
+
+ if ((newlim->d_fieldmask &
+diff -NurpP --minimal linux-2.6.20.4/fs/xfs/xfs_clnt.h linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/xfs_clnt.h
+--- linux-2.6.20.4/fs/xfs/xfs_clnt.h 2006-06-18 04:54:50 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/xfs_clnt.h 2007-02-06 03:05:22 +0100
+@@ -99,5 +99,7 @@ struct xfs_mount_args {
+ */
+ #define XFSMNT2_COMPAT_IOSIZE 0x00000001 /* don't report large preferred
+ * I/O size in stat(2) */
++#define XFSMNT2_TAGGED 0x80000000 /* context tagging */
++
+
+ #endif /* __XFS_CLNT_H__ */
+diff -NurpP --minimal linux-2.6.20.4/fs/xfs/xfs_dinode.h linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/xfs_dinode.h
+--- linux-2.6.20.4/fs/xfs/xfs_dinode.h 2006-09-20 16:58:40 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/xfs_dinode.h 2007-02-06 03:05:22 +0100
+@@ -53,7 +53,8 @@ typedef struct xfs_dinode_core
+ __uint32_t di_gid; /* owner's group id */
+ __uint32_t di_nlink; /* number of links to file */
+ __uint16_t di_projid; /* owner's project id */
+- __uint8_t di_pad[8]; /* unused, zeroed space */
++ __uint16_t di_tag; /* context tagging */
++ __uint8_t di_pad[6]; /* unused, zeroed space */
+ __uint16_t di_flushiter; /* incremented on flush */
+ xfs_timestamp_t di_atime; /* time last accessed */
+ xfs_timestamp_t di_mtime; /* time last modified */
+@@ -257,6 +258,9 @@ typedef enum xfs_dinode_fmt
+ #define XFS_DIFLAG_EXTSIZE_BIT 11 /* inode extent size allocator hint */
+ #define XFS_DIFLAG_EXTSZINHERIT_BIT 12 /* inherit inode extent size */
+ #define XFS_DIFLAG_NODEFRAG_BIT 13 /* do not reorganize/defragment */
++#define XFS_DIFLAG_BARRIER_BIT 14 /* chroot() barrier */
++#define XFS_DIFLAG_IUNLINK_BIT 15 /* immutable unlink */
++
+ #define XFS_DIFLAG_REALTIME (1 << XFS_DIFLAG_REALTIME_BIT)
+ #define XFS_DIFLAG_PREALLOC (1 << XFS_DIFLAG_PREALLOC_BIT)
+ #define XFS_DIFLAG_NEWRTBM (1 << XFS_DIFLAG_NEWRTBM_BIT)
+@@ -271,12 +275,15 @@ typedef enum xfs_dinode_fmt
+ #define XFS_DIFLAG_EXTSIZE (1 << XFS_DIFLAG_EXTSIZE_BIT)
+ #define XFS_DIFLAG_EXTSZINHERIT (1 << XFS_DIFLAG_EXTSZINHERIT_BIT)
+ #define XFS_DIFLAG_NODEFRAG (1 << XFS_DIFLAG_NODEFRAG_BIT)
++#define XFS_DIFLAG_BARRIER (1 << XFS_DIFLAG_BARRIER_BIT)
++#define XFS_DIFLAG_IUNLINK (1 << XFS_DIFLAG_IUNLINK_BIT)
+
+ #define XFS_DIFLAG_ANY \
+ (XFS_DIFLAG_REALTIME | XFS_DIFLAG_PREALLOC | XFS_DIFLAG_NEWRTBM | \
+ XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND | XFS_DIFLAG_SYNC | \
+ XFS_DIFLAG_NOATIME | XFS_DIFLAG_NODUMP | XFS_DIFLAG_RTINHERIT | \
+ XFS_DIFLAG_PROJINHERIT | XFS_DIFLAG_NOSYMLINKS | XFS_DIFLAG_EXTSIZE | \
+- XFS_DIFLAG_EXTSZINHERIT | XFS_DIFLAG_NODEFRAG)
++ XFS_DIFLAG_EXTSZINHERIT | XFS_DIFLAG_NODEFRAG | XFS_DIFLAG_BARRIER | \
++ XFS_DIFLAG_IUNLINK)
+
+ #endif /* __XFS_DINODE_H__ */
+diff -NurpP --minimal linux-2.6.20.4/fs/xfs/xfs_fs.h linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/xfs_fs.h
+--- linux-2.6.20.4/fs/xfs/xfs_fs.h 2006-11-30 21:19:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/xfs_fs.h 2007-02-06 03:05:22 +0100
+@@ -66,6 +66,8 @@ struct fsxattr {
+ #define XFS_XFLAG_EXTSIZE 0x00000800 /* extent size allocator hint */
+ #define XFS_XFLAG_EXTSZINHERIT 0x00001000 /* inherit inode extent size */
+ #define XFS_XFLAG_NODEFRAG 0x00002000 /* do not defragment */
++#define XFS_XFLAG_BARRIER 0x00004000 /* chroot() barrier */
++#define XFS_XFLAG_IUNLINK 0x00008000 /* immutable unlink */
+ #define XFS_XFLAG_HASATTR 0x80000000 /* no DIFLAG for this */
+
+ /*
+@@ -294,7 +296,8 @@ typedef struct xfs_bstat {
+ __s32 bs_extents; /* number of extents */
+ __u32 bs_gen; /* generation count */
+ __u16 bs_projid; /* project id */
+- unsigned char bs_pad[14]; /* pad space, unused */
++ __u16 bs_tag; /* context tagging */
++ unsigned char bs_pad[12]; /* pad space, unused */
+ __u32 bs_dmevmask; /* DMIG event mask */
+ __u16 bs_dmstate; /* DMIG state info */
+ __u16 bs_aextents; /* attribute number of extents */
+diff -NurpP --minimal linux-2.6.20.4/fs/xfs/xfs_inode.c linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/xfs_inode.c
+--- linux-2.6.20.4/fs/xfs/xfs_inode.c 2006-11-30 21:19:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/xfs_inode.c 2007-02-06 03:05:22 +0100
+@@ -50,6 +50,7 @@
+ #include "xfs_mac.h"
+ #include "xfs_acl.h"
+
++#include <linux/vs_tag.h>
+
+ kmem_zone_t *xfs_ifork_zone;
+ kmem_zone_t *xfs_inode_zone;
+@@ -736,20 +737,35 @@ xfs_xlate_dinode_core(
+ xfs_dinode_core_t *buf_core = (xfs_dinode_core_t *)buf;
+ xfs_dinode_core_t *mem_core = (xfs_dinode_core_t *)dip;
+ xfs_arch_t arch = ARCH_CONVERT;
++ uint32_t uid = 0, gid = 0;
++ uint16_t tag = 0;
+
+ ASSERT(dir);
+
++ if (dir < 0) {
++ tag = mem_core->di_tag;
++ /* FIXME: supposed to use superblock flag */
++ uid = TAGINO_UID(1, mem_core->di_uid, tag);
++ gid = TAGINO_GID(1, mem_core->di_gid, tag);
++ tag = TAGINO_TAG(1, tag);
++ }
++
+ INT_XLATE(buf_core->di_magic, mem_core->di_magic, dir, arch);
+ INT_XLATE(buf_core->di_mode, mem_core->di_mode, dir, arch);
+ INT_XLATE(buf_core->di_version, mem_core->di_version, dir, arch);
+ INT_XLATE(buf_core->di_format, mem_core->di_format, dir, arch);
+ INT_XLATE(buf_core->di_onlink, mem_core->di_onlink, dir, arch);
+- INT_XLATE(buf_core->di_uid, mem_core->di_uid, dir, arch);
+- INT_XLATE(buf_core->di_gid, mem_core->di_gid, dir, arch);
++ INT_XLATE(buf_core->di_uid, uid, dir, arch);
++ INT_XLATE(buf_core->di_gid, gid, dir, arch);
++ INT_XLATE(buf_core->di_tag, tag, dir, arch);
+ INT_XLATE(buf_core->di_nlink, mem_core->di_nlink, dir, arch);
+ INT_XLATE(buf_core->di_projid, mem_core->di_projid, dir, arch);
+
+ if (dir > 0) {
++ /* FIXME: supposed to use superblock flag */
++ mem_core->di_uid = INOTAG_UID(1, uid, gid);
++ mem_core->di_gid = INOTAG_GID(1, uid, gid);
++ mem_core->di_tag = INOTAG_TAG(1, uid, gid, tag);
+ memcpy(mem_core->di_pad, buf_core->di_pad,
+ sizeof(buf_core->di_pad));
+ } else {
+@@ -797,6 +813,10 @@ _xfs_dic2xflags(
+ flags |= XFS_XFLAG_PREALLOC;
+ if (di_flags & XFS_DIFLAG_IMMUTABLE)
+ flags |= XFS_XFLAG_IMMUTABLE;
++ if (di_flags & XFS_DIFLAG_IUNLINK)
++ flags |= XFS_XFLAG_IUNLINK;
++ if (di_flags & XFS_DIFLAG_BARRIER)
++ flags |= XFS_XFLAG_BARRIER;
+ if (di_flags & XFS_DIFLAG_APPEND)
+ flags |= XFS_XFLAG_APPEND;
+ if (di_flags & XFS_DIFLAG_SYNC)
+@@ -1128,6 +1148,7 @@ xfs_ialloc(
+ ASSERT(ip->i_d.di_nlink == nlink);
+ ip->i_d.di_uid = current_fsuid(cr);
+ ip->i_d.di_gid = current_fsgid(cr);
++ ip->i_d.di_tag = current_fstag(cr, vp);
+ ip->i_d.di_projid = prid;
+ memset(&(ip->i_d.di_pad[0]), 0, sizeof(ip->i_d.di_pad));
+
+diff -NurpP --minimal linux-2.6.20.4/fs/xfs/xfs_itable.c linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/xfs_itable.c
+--- linux-2.6.20.4/fs/xfs/xfs_itable.c 2006-11-30 21:19:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/xfs_itable.c 2007-02-06 03:05:22 +0100
+@@ -89,6 +89,7 @@ xfs_bulkstat_one_iget(
+ buf->bs_mode = dic->di_mode;
+ buf->bs_uid = dic->di_uid;
+ buf->bs_gid = dic->di_gid;
++ buf->bs_tag = dic->di_tag;
+ buf->bs_size = dic->di_size;
+ vn_atime_to_bstime(vp, &buf->bs_atime);
+ buf->bs_mtime.tv_sec = dic->di_mtime.t_sec;
+@@ -163,6 +164,7 @@ xfs_bulkstat_one_dinode(
+ buf->bs_mode = INT_GET(dic->di_mode, ARCH_CONVERT);
+ buf->bs_uid = INT_GET(dic->di_uid, ARCH_CONVERT);
+ buf->bs_gid = INT_GET(dic->di_gid, ARCH_CONVERT);
++ buf->bs_tag = INT_GET(dic->di_tag, ARCH_CONVERT);
+ buf->bs_size = INT_GET(dic->di_size, ARCH_CONVERT);
+ buf->bs_atime.tv_sec = INT_GET(dic->di_atime.t_sec, ARCH_CONVERT);
+ buf->bs_atime.tv_nsec = INT_GET(dic->di_atime.t_nsec, ARCH_CONVERT);
+diff -NurpP --minimal linux-2.6.20.4/fs/xfs/xfs_mount.h linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/xfs_mount.h
+--- linux-2.6.20.4/fs/xfs/xfs_mount.h 2006-11-30 21:19:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/xfs_mount.h 2007-02-06 03:05:22 +0100
+@@ -460,6 +460,7 @@ typedef struct xfs_mount {
+ #define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock
+ counters */
+
++#define XFS_MOUNT_TAGGED (1ULL << 31) /* context tagging */
+
+ /*
+ * Default minimum read and write sizes.
+diff -NurpP --minimal linux-2.6.20.4/fs/xfs/xfs_vfsops.c linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/xfs_vfsops.c
+--- linux-2.6.20.4/fs/xfs/xfs_vfsops.c 2006-11-30 21:19:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/xfs_vfsops.c 2007-02-06 03:05:22 +0100
+@@ -300,6 +300,8 @@ xfs_start_flags(
+
+ if (ap->flags2 & XFSMNT2_COMPAT_IOSIZE)
+ mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
++ if (ap->flags2 & XFSMNT2_TAGGED)
++ mp->m_flags |= XFS_MOUNT_TAGGED;
+
+ /*
+ * no recovery flag requires a read-only mount
+@@ -394,6 +396,8 @@ xfs_finish_flags(
+ return XFS_ERROR(EINVAL);
+ }
+
++ if (ap->flags2 & XFSMNT2_TAGGED)
++ vfs->vfs_super->s_flags |= MS_TAGGED;
+ return 0;
+ }
+
+@@ -1645,6 +1649,9 @@ xfs_vget(
+ * in stat(). */
+ #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */
+ #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */
++#define MNTOPT_TAGXID "tagxid" /* context tagging for inodes */
++#define MNTOPT_TAGGED "tag" /* context tagging for inodes */
++#define MNTOPT_NOTAGTAG "notag" /* do not use context tagging */
+
+ STATIC unsigned long
+ suffix_strtoul(char *s, char **endp, unsigned int base)
+@@ -1831,6 +1838,19 @@ xfs_parseargs(
+ args->flags |= XFSMNT_ATTR2;
+ } else if (!strcmp(this_char, MNTOPT_NOATTR2)) {
+ args->flags &= ~XFSMNT_ATTR2;
++#ifndef CONFIG_TAGGING_NONE
++ } else if (!strcmp(this_char, MNTOPT_TAGGED)) {
++ args->flags2 |= XFSMNT2_TAGGED;
++ } else if (!strcmp(this_char, MNTOPT_NOTAGTAG)) {
++ args->flags2 &= ~XFSMNT2_TAGGED;
++ } else if (!strcmp(this_char, MNTOPT_TAGXID)) {
++ args->flags2 |= XFSMNT2_TAGGED;
++#endif
++#ifdef CONFIG_PROPAGATE
++ } else if (!strcmp(this_char, MNTOPT_TAGGED)) {
++ /* use value */
++ args->flags2 |= XFSMNT2_TAGGED;
++#endif
+ } else if (!strcmp(this_char, "osyncisdsync")) {
+ /* no-op, this is now the default */
+ cmn_err(CE_WARN,
+diff -NurpP --minimal linux-2.6.20.4/fs/xfs/xfs_vnodeops.c linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/xfs_vnodeops.c
+--- linux-2.6.20.4/fs/xfs/xfs_vnodeops.c 2006-11-30 21:19:29 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/fs/xfs/xfs_vnodeops.c 2007-02-15 00:05:56 +0100
+@@ -160,6 +160,7 @@ xfs_getattr(
+ vap->va_mode = ip->i_d.di_mode;
+ vap->va_uid = ip->i_d.di_uid;
+ vap->va_gid = ip->i_d.di_gid;
++ vap->va_tag = ip->i_d.di_tag;
+ vap->va_projid = ip->i_d.di_projid;
+
+ /*
+@@ -260,6 +261,7 @@ xfs_setattr(
+ uint commit_flags=0;
+ uid_t uid=0, iuid=0;
+ gid_t gid=0, igid=0;
++ tag_t tag=0, itag=0;
+ int timeflags = 0;
+ bhv_vnode_t *vp;
+ xfs_prid_t projid=0, iprojid=0;
+@@ -316,6 +318,7 @@ xfs_setattr(
+ (mask & (XFS_AT_UID|XFS_AT_GID|XFS_AT_PROJID))) {
+ uint qflags = 0;
+
++ /* TODO: handle tagging? */
+ if ((mask & XFS_AT_UID) && XFS_IS_UQUOTA_ON(mp)) {
+ uid = vap->va_uid;
+ qflags |= XFS_QMOPT_UQUOTA;
+@@ -395,6 +398,8 @@ xfs_setattr(
+ if (mask &
+ (XFS_AT_MODE|XFS_AT_XFLAGS|XFS_AT_EXTSIZE|XFS_AT_UID|
+ XFS_AT_GID|XFS_AT_PROJID)) {
++ /* TODO: handle tagging? */
++
+ /*
+ * CAP_FOWNER overrides the following restrictions:
+ *
+@@ -443,7 +448,7 @@ xfs_setattr(
+ * and can change the group id only to a group of which he
+ * or she is a member.
+ */
+- if (mask & (XFS_AT_UID|XFS_AT_GID|XFS_AT_PROJID)) {
++ if (mask & (XFS_AT_UID|XFS_AT_GID|XFS_AT_TAG|XFS_AT_PROJID)) {
+ /*
+ * These IDs could have changed since we last looked at them.
+ * But, we're assured that if the ownership did change
+@@ -451,10 +456,12 @@ xfs_setattr(
+ * would have changed also.
+ */
+ iuid = ip->i_d.di_uid;
+- iprojid = ip->i_d.di_projid;
+ igid = ip->i_d.di_gid;
+- gid = (mask & XFS_AT_GID) ? vap->va_gid : igid;
++ itag = ip->i_d.di_tag;
++ iprojid = ip->i_d.di_projid;
+ uid = (mask & XFS_AT_UID) ? vap->va_uid : iuid;
++ gid = (mask & XFS_AT_GID) ? vap->va_gid : igid;
++ tag = (mask & XFS_AT_TAG) ? vap->va_tag : itag;
+ projid = (mask & XFS_AT_PROJID) ? (xfs_prid_t)vap->va_projid :
+ iprojid;
+
+@@ -482,6 +489,7 @@ xfs_setattr(
+ if ((XFS_IS_UQUOTA_ON(mp) && iuid != uid) ||
+ (XFS_IS_PQUOTA_ON(mp) && iprojid != projid) ||
+ (XFS_IS_GQUOTA_ON(mp) && igid != gid)) {
++ /* TODO: handle tagging? */
+ ASSERT(tp);
+ code = XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, udqp, gdqp,
+ capable(CAP_FOWNER) ?
+@@ -707,7 +715,7 @@ xfs_setattr(
+ * and can change the group id only to a group of which he
+ * or she is a member.
+ */
+- if (mask & (XFS_AT_UID|XFS_AT_GID|XFS_AT_PROJID)) {
++ if (mask & (XFS_AT_UID|XFS_AT_GID|XFS_AT_TAG|XFS_AT_PROJID)) {
+ /*
+ * CAP_FSETID overrides the following restrictions:
+ *
+@@ -723,6 +731,9 @@ xfs_setattr(
+ * Change the ownerships and register quota modifications
+ * in the transaction.
+ */
++ if (itag != tag) {
++ ip->i_d.di_tag = tag;
++ }
+ if (iuid != uid) {
+ if (XFS_IS_UQUOTA_ON(mp)) {
+ ASSERT(mask & XFS_AT_UID);
+@@ -803,6 +814,10 @@ xfs_setattr(
+ di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC);
+ if (vap->va_xflags & XFS_XFLAG_IMMUTABLE)
+ di_flags |= XFS_DIFLAG_IMMUTABLE;
++ if (vap->va_xflags & XFS_XFLAG_IUNLINK)
++ di_flags |= XFS_DIFLAG_IUNLINK;
++ if (vap->va_xflags & XFS_XFLAG_BARRIER)
++ di_flags |= XFS_DIFLAG_BARRIER;
+ if (vap->va_xflags & XFS_XFLAG_APPEND)
+ di_flags |= XFS_DIFLAG_APPEND;
+ if (vap->va_xflags & XFS_XFLAG_SYNC)
+diff -NurpP --minimal linux-2.6.20.4/include/asm-arm/tlb.h linux-2.6.20.4-vs2.2.0-rc20/include/asm-arm/tlb.h
+--- linux-2.6.20.4/include/asm-arm/tlb.h 2006-06-18 04:54:58 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/include/asm-arm/tlb.h 2007-02-06 03:05:22 +0100
+@@ -28,6 +28,7 @@
+ #else /* !CONFIG_MMU */
+
+ #include <asm/pgalloc.h>
++#include <linux/vs_memory.h>
+
+ /*
+ * TLB handling. This allows us to remove pages from the page
+diff -NurpP --minimal linux-2.6.20.4/include/asm-arm26/tlb.h linux-2.6.20.4-vs2.2.0-rc20/include/asm-arm26/tlb.h
+--- linux-2.6.20.4/include/asm-arm26/tlb.h 2006-01-03 17:30:02 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/asm-arm26/tlb.h 2007-02-06 03:05:22 +0100
+@@ -3,6 +3,7 @@
+
+ #include <asm/pgalloc.h>
+ #include <asm/tlbflush.h>
++#include <linux/vs_memory.h>
+
+ /*
+ * TLB handling. This allows us to remove pages from the page
+diff -NurpP --minimal linux-2.6.20.4/include/asm-arm26/unistd.h linux-2.6.20.4-vs2.2.0-rc20/include/asm-arm26/unistd.h
+--- linux-2.6.20.4/include/asm-arm26/unistd.h 2007-02-06 03:01:35 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/asm-arm26/unistd.h 2007-02-06 03:05:22 +0100
+@@ -302,6 +302,8 @@
+ #define __NR_mq_getsetattr (__NR_SYSCALL_BASE+279)
+ #define __NR_waitid (__NR_SYSCALL_BASE+280)
+
++#define __NR_vserver (__NR_SYSCALL_BASE+313)
++
+ /*
+ * The following SWIs are ARM private. FIXME - make appropriate for arm26
+ */
+diff -NurpP --minimal linux-2.6.20.4/include/asm-generic/tlb.h linux-2.6.20.4-vs2.2.0-rc20/include/asm-generic/tlb.h
+--- linux-2.6.20.4/include/asm-generic/tlb.h 2006-11-30 21:19:31 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/asm-generic/tlb.h 2007-02-06 03:05:22 +0100
+@@ -14,6 +14,7 @@
+ #define _ASM_GENERIC__TLB_H
+
+ #include <linux/swap.h>
++#include <linux/vs_memory.h>
+ #include <asm/pgalloc.h>
+ #include <asm/tlbflush.h>
+
+diff -NurpP --minimal linux-2.6.20.4/include/asm-ia64/tlb.h linux-2.6.20.4-vs2.2.0-rc20/include/asm-ia64/tlb.h
+--- linux-2.6.20.4/include/asm-ia64/tlb.h 2006-09-20 16:58:40 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/include/asm-ia64/tlb.h 2007-02-06 03:05:22 +0100
+@@ -40,6 +40,7 @@
+ #include <linux/mm.h>
+ #include <linux/pagemap.h>
+ #include <linux/swap.h>
++#include <linux/vs_memory.h>
+
+ #include <asm/pgalloc.h>
+ #include <asm/processor.h>
+diff -NurpP --minimal linux-2.6.20.4/include/asm-powerpc/systbl.h linux-2.6.20.4-vs2.2.0-rc20/include/asm-powerpc/systbl.h
+--- linux-2.6.20.4/include/asm-powerpc/systbl.h 2006-11-30 21:19:33 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/asm-powerpc/systbl.h 2007-02-06 03:05:22 +0100
+@@ -260,7 +260,7 @@ COMPAT_SYS_SPU(fstatfs64)
+ SYSX(sys_ni_syscall, ppc_fadvise64_64, ppc_fadvise64_64)
+ PPC_SYS_SPU(rtas)
+ OLDSYS(debug_setcontext)
+-SYSCALL(ni_syscall)
++SYSX(sys_vserver, sys32_vserver, sys_vserver)
+ COMPAT_SYS(migrate_pages)
+ COMPAT_SYS(mbind)
+ COMPAT_SYS(get_mempolicy)
+diff -NurpP --minimal linux-2.6.20.4/include/asm-powerpc/unistd.h linux-2.6.20.4-vs2.2.0-rc20/include/asm-powerpc/unistd.h
+--- linux-2.6.20.4/include/asm-powerpc/unistd.h 2007-02-06 03:01:44 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/asm-powerpc/unistd.h 2007-02-06 03:05:22 +0100
+@@ -275,7 +275,7 @@
+ #endif
+ #define __NR_rtas 255
+ #define __NR_sys_debug_setcontext 256
+-/* Number 257 is reserved for vserver */
++#define __NR_vserver 257
+ #define __NR_migrate_pages 258
+ #define __NR_mbind 259
+ #define __NR_get_mempolicy 260
+diff -NurpP --minimal linux-2.6.20.4/include/asm-s390/unistd.h linux-2.6.20.4-vs2.2.0-rc20/include/asm-s390/unistd.h
+--- linux-2.6.20.4/include/asm-s390/unistd.h 2007-02-06 03:01:45 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/asm-s390/unistd.h 2007-02-06 03:05:22 +0100
+@@ -202,7 +202,7 @@
+ #define __NR_clock_gettime (__NR_timer_create+6)
+ #define __NR_clock_getres (__NR_timer_create+7)
+ #define __NR_clock_nanosleep (__NR_timer_create+8)
+-/* Number 263 is reserved for vserver */
++#define __NR_vserver 263
+ #define __NR_statfs64 265
+ #define __NR_fstatfs64 266
+ #define __NR_remap_file_pages 267
+diff -NurpP --minimal linux-2.6.20.4/include/asm-sparc/unistd.h linux-2.6.20.4-vs2.2.0-rc20/include/asm-sparc/unistd.h
+--- linux-2.6.20.4/include/asm-sparc/unistd.h 2007-02-06 03:01:49 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/asm-sparc/unistd.h 2007-02-06 03:05:22 +0100
+@@ -283,7 +283,7 @@
+ #define __NR_timer_getoverrun 264
+ #define __NR_timer_delete 265
+ #define __NR_timer_create 266
+-/* #define __NR_vserver 267 Reserved for VSERVER */
++#define __NR_vserver 267
+ #define __NR_io_setup 268
+ #define __NR_io_destroy 269
+ #define __NR_io_submit 270
+diff -NurpP --minimal linux-2.6.20.4/include/asm-sparc64/tlb.h linux-2.6.20.4-vs2.2.0-rc20/include/asm-sparc64/tlb.h
+--- linux-2.6.20.4/include/asm-sparc64/tlb.h 2006-09-20 16:58:43 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/include/asm-sparc64/tlb.h 2007-02-06 03:05:22 +0100
+@@ -2,6 +2,7 @@
+ #define _SPARC64_TLB_H
+
+ #include <linux/swap.h>
++#include <linux/vs_memory.h>
+ #include <asm/pgalloc.h>
+ #include <asm/tlbflush.h>
+ #include <asm/mmu_context.h>
+diff -NurpP --minimal linux-2.6.20.4/include/asm-sparc64/unistd.h linux-2.6.20.4-vs2.2.0-rc20/include/asm-sparc64/unistd.h
+--- linux-2.6.20.4/include/asm-sparc64/unistd.h 2007-02-06 03:01:49 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/asm-sparc64/unistd.h 2007-02-06 03:05:22 +0100
+@@ -285,7 +285,7 @@
+ #define __NR_timer_getoverrun 264
+ #define __NR_timer_delete 265
+ #define __NR_timer_create 266
+-/* #define __NR_vserver 267 Reserved for VSERVER */
++#define __NR_vserver 267
+ #define __NR_io_setup 268
+ #define __NR_io_destroy 269
+ #define __NR_io_submit 270
+diff -NurpP --minimal linux-2.6.20.4/include/asm-x86_64/unistd.h linux-2.6.20.4-vs2.2.0-rc20/include/asm-x86_64/unistd.h
+--- linux-2.6.20.4/include/asm-x86_64/unistd.h 2007-02-06 03:01:50 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/asm-x86_64/unistd.h 2007-02-06 03:05:22 +0100
+@@ -532,7 +532,7 @@ __SYSCALL(__NR_tgkill, sys_tgkill)
+ #define __NR_utimes 235
+ __SYSCALL(__NR_utimes, sys_utimes)
+ #define __NR_vserver 236
+-__SYSCALL(__NR_vserver, sys_ni_syscall)
++__SYSCALL(__NR_vserver, sys_vserver)
+ #define __NR_mbind 237
+ __SYSCALL(__NR_mbind, sys_mbind)
+ #define __NR_set_mempolicy 238
+diff -NurpP --minimal linux-2.6.20.4/include/linux/Kbuild linux-2.6.20.4-vs2.2.0-rc20/include/linux/Kbuild
+--- linux-2.6.20.4/include/linux/Kbuild 2007-02-06 03:01:50 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/Kbuild 2007-02-06 03:05:22 +0100
+@@ -339,3 +339,6 @@ unifdef-y += wireless.h
+ unifdef-y += xfrm.h
+
+ objhdr-y += version.h
++
++header-y += vserver/
++
+diff -NurpP --minimal linux-2.6.20.4/include/linux/capability.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/capability.h
+--- linux-2.6.20.4/include/linux/capability.h 2006-06-18 04:55:15 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/capability.h 2007-02-06 03:05:22 +0100
+@@ -235,6 +235,7 @@ typedef __u32 kernel_cap_t;
+ arbitrary SCSI commands */
+ /* Allow setting encryption key on loopback filesystem */
+ /* Allow setting zone reclaim policy */
++/* Allow the selection of a security context */
+
+ #define CAP_SYS_ADMIN 21
+
+@@ -288,6 +289,11 @@ typedef __u32 kernel_cap_t;
+
+ #define CAP_AUDIT_CONTROL 30
+
++/* Allow context manipulations */
++/* Allow changing context info on files */
++
++#define CAP_CONTEXT 31
++
+ #ifdef __KERNEL__
+ /*
+ * Bounding set
+diff -NurpP --minimal linux-2.6.20.4/include/linux/devpts_fs.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/devpts_fs.h
+--- linux-2.6.20.4/include/linux/devpts_fs.h 2004-08-14 12:55:59 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/devpts_fs.h 2007-02-06 03:05:22 +0100
+@@ -30,5 +30,7 @@ static inline void devpts_pty_kill(int n
+
+ #endif
+
++#define DEVPTS_SUPER_MAGIC 0x00001cd1
++
+
+ #endif /* _LINUX_DEVPTS_FS_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/ext2_fs.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/ext2_fs.h
+--- linux-2.6.20.4/include/linux/ext2_fs.h 2006-11-30 21:19:37 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/ext2_fs.h 2007-02-06 03:05:22 +0100
+@@ -188,6 +188,8 @@ struct ext2_group_desc
+ #define EXT2_NOTAIL_FL FS_NOTAIL_FL /* file tail should not be merged */
+ #define EXT2_DIRSYNC_FL FS_DIRSYNC_FL /* dirsync behaviour (directories only) */
+ #define EXT2_TOPDIR_FL FS_TOPDIR_FL /* Top of directory hierarchies*/
++#define EXT2_BARRIER_FL FS_BARRIER_FL /* Barrier for chroot() */
++#define EXT2_IUNLINK_FL FS_IUNLINK_FL /* Immutable unlink */
+ #define EXT2_RESERVED_FL FS_RESERVED_FL /* reserved for ext2 lib */
+
+ #define EXT2_FL_USER_VISIBLE FS_FL_USER_VISIBLE /* User visible flags */
+@@ -244,7 +246,7 @@ struct ext2_inode {
+ struct {
+ __u8 l_i_frag; /* Fragment number */
+ __u8 l_i_fsize; /* Fragment size */
+- __u16 i_pad1;
++ __u16 l_i_tag; /* Context Tag */
+ __le16 l_i_uid_high; /* these 2 fields */
+ __le16 l_i_gid_high; /* were reserved2[0] */
+ __u32 l_i_reserved2;
+@@ -276,6 +278,7 @@ struct ext2_inode {
+ #define i_gid_low i_gid
+ #define i_uid_high osd2.linux2.l_i_uid_high
+ #define i_gid_high osd2.linux2.l_i_gid_high
++#define i_raw_tag osd2.linux2.l_i_tag
+ #define i_reserved2 osd2.linux2.l_i_reserved2
+ #endif
+
+@@ -317,8 +320,9 @@ struct ext2_inode {
+ #define EXT2_MOUNT_XATTR_USER 0x004000 /* Extended user attributes */
+ #define EXT2_MOUNT_POSIX_ACL 0x008000 /* POSIX Access Control Lists */
+ #define EXT2_MOUNT_XIP 0x010000 /* Execute in place */
+-#define EXT2_MOUNT_USRQUOTA 0x020000 /* user quota */
+-#define EXT2_MOUNT_GRPQUOTA 0x040000 /* group quota */
++#define EXT2_MOUNT_USRQUOTA 0x020000 /* user quota */
++#define EXT2_MOUNT_GRPQUOTA 0x040000 /* group quota */
++#define EXT2_MOUNT_TAGGED (1<<24) /* Enable Context Tags */
+
+
+ #define clear_opt(o, opt) o &= ~EXT2_MOUNT_##opt
+diff -NurpP --minimal linux-2.6.20.4/include/linux/ext3_fs.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/ext3_fs.h
+--- linux-2.6.20.4/include/linux/ext3_fs.h 2006-11-30 21:19:37 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/ext3_fs.h 2007-02-06 03:05:22 +0100
+@@ -177,10 +177,20 @@ struct ext3_group_desc
+ #define EXT3_NOTAIL_FL 0x00008000 /* file tail should not be merged */
+ #define EXT3_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */
+ #define EXT3_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/
++#define EXT3_BARRIER_FL 0x04000000 /* Barrier for chroot() */
++#define EXT3_IUNLINK_FL 0x08000000 /* Immutable unlink */
+ #define EXT3_RESERVED_FL 0x80000000 /* reserved for ext3 lib */
+
++#ifdef CONFIG_VSERVER_LEGACY
++#define EXT3_FL_USER_VISIBLE 0x0803DFFF /* User visible flags */
++#define EXT3_FL_USER_MODIFIABLE 0x080380FF /* User modifiable flags */
++#else
+ #define EXT3_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */
+ #define EXT3_FL_USER_MODIFIABLE 0x000380FF /* User modifiable flags */
++#endif
++#ifdef CONFIG_VSERVER_LEGACY
++#define EXT3_IOC_SETTAG FIOC_SETTAGJ
++#endif
+
+ /*
+ * Inode dynamic state flags
+@@ -296,7 +306,7 @@ struct ext3_inode {
+ struct {
+ __u8 l_i_frag; /* Fragment number */
+ __u8 l_i_fsize; /* Fragment size */
+- __u16 i_pad1;
++ __u16 l_i_tag; /* Context Tag */
+ __le16 l_i_uid_high; /* these 2 fields */
+ __le16 l_i_gid_high; /* were reserved2[0] */
+ __u32 l_i_reserved2;
+@@ -330,6 +340,7 @@ struct ext3_inode {
+ #define i_gid_low i_gid
+ #define i_uid_high osd2.linux2.l_i_uid_high
+ #define i_gid_high osd2.linux2.l_i_gid_high
++#define i_raw_tag osd2.linux2.l_i_tag
+ #define i_reserved2 osd2.linux2.l_i_reserved2
+
+ #elif defined(__GNU__)
+@@ -384,6 +395,7 @@ struct ext3_inode {
+ #define EXT3_MOUNT_QUOTA 0x80000 /* Some quota option set */
+ #define EXT3_MOUNT_USRQUOTA 0x100000 /* "old" user quota */
+ #define EXT3_MOUNT_GRPQUOTA 0x200000 /* "old" group quota */
++#define EXT3_MOUNT_TAGGED (1<<24) /* Enable Context Tags */
+
+ /* Compatibility, for having both ext2_fs.h and ext3_fs.h included at once */
+ #ifndef _LINUX_EXT2_FS_H
+@@ -812,6 +824,7 @@ struct buffer_head * ext3_bread (handle_
+ int ext3_get_blocks_handle(handle_t *handle, struct inode *inode,
+ sector_t iblock, unsigned long maxblocks, struct buffer_head *bh_result,
+ int create, int extend_disksize);
++extern int ext3_sync_flags(struct inode *inode);
+
+ extern void ext3_read_inode (struct inode *);
+ extern int ext3_write_inode (struct inode *, int);
+diff -NurpP --minimal linux-2.6.20.4/include/linux/ext4_fs.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/ext4_fs.h
+--- linux-2.6.20.4/include/linux/ext4_fs.h 2006-11-30 21:19:37 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/ext4_fs.h 2007-02-06 03:05:22 +0100
+@@ -189,11 +189,21 @@ struct ext4_group_desc
+ #define EXT4_NOTAIL_FL 0x00008000 /* file tail should not be merged */
+ #define EXT4_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */
+ #define EXT4_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/
+-#define EXT4_RESERVED_FL 0x80000000 /* reserved for ext4 lib */
+ #define EXT4_EXTENTS_FL 0x00080000 /* Inode uses extents */
++#define EXT4_BARRIER_FL 0x04000000 /* Barrier for chroot() */
++#define EXT4_IUNLINK_FL 0x08000000 /* Immutable unlink */
++#define EXT4_RESERVED_FL 0x80000000 /* reserved for ext4 lib */
+
++#ifdef CONFIG_VSERVER_LEGACY
++#define EXT4_FL_USER_VISIBLE 0x080BDFFF /* User visible flags */
++#define EXT4_FL_USER_MODIFIABLE 0x080380FF /* User modifiable flags */
++#else
+ #define EXT4_FL_USER_VISIBLE 0x000BDFFF /* User visible flags */
+ #define EXT4_FL_USER_MODIFIABLE 0x000380FF /* User modifiable flags */
++#endif
++#ifdef CONFIG_VSERVER_LEGACY
++#define EXT4_IOC_SETTAG FIOC_SETTAGJ
++#endif
+
+ /*
+ * Inode dynamic state flags
+@@ -312,7 +322,8 @@ struct ext4_inode {
+ __le16 l_i_file_acl_high;
+ __le16 l_i_uid_high; /* these 2 fields */
+ __le16 l_i_gid_high; /* were reserved2[0] */
+- __u32 l_i_reserved2;
++ __u16 l_i_tag; /* Context Tag */
++ __u16 l_i_reserved2;
+ } linux2;
+ struct {
+ __u8 h_i_frag; /* Fragment number */
+@@ -344,6 +355,7 @@ struct ext4_inode {
+ #define i_gid_low i_gid
+ #define i_uid_high osd2.linux2.l_i_uid_high
+ #define i_gid_high osd2.linux2.l_i_gid_high
++#define i_raw_tag osd2.linux2.l_i_tag
+ #define i_reserved2 osd2.linux2.l_i_reserved2
+
+ #elif defined(__GNU__)
+@@ -400,6 +412,7 @@ struct ext4_inode {
+ #define EXT4_MOUNT_USRQUOTA 0x100000 /* "old" user quota */
+ #define EXT4_MOUNT_GRPQUOTA 0x200000 /* "old" group quota */
+ #define EXT4_MOUNT_EXTENTS 0x400000 /* Extents support */
++#define EXT4_MOUNT_TAGGED (1<<24) /* Enable Context Tags */
+
+ /* Compatibility, for having both ext2_fs.h and ext4_fs.h included at once */
+ #ifndef _LINUX_EXT2_FS_H
+@@ -843,6 +856,7 @@ struct buffer_head * ext4_bread (handle_
+ int ext4_get_blocks_handle(handle_t *handle, struct inode *inode,
+ sector_t iblock, unsigned long maxblocks, struct buffer_head *bh_result,
+ int create, int extend_disksize);
++extern int ext4_sync_flags(struct inode *inode);
+
+ extern void ext4_read_inode (struct inode *);
+ extern int ext4_write_inode (struct inode *, int);
+diff -NurpP --minimal linux-2.6.20.4/include/linux/fs.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/fs.h
+--- linux-2.6.20.4/include/linux/fs.h 2007-02-06 03:01:50 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/fs.h 2007-02-06 03:39:12 +0100
+@@ -121,6 +121,8 @@ extern int dir_notify_enable;
+ #define MS_SLAVE (1<<19) /* change to slave */
+ #define MS_SHARED (1<<20) /* change to shared */
+ #define MS_RELATIME (1<<21) /* Update atime relative to mtime/ctime. */
++#define MS_TAGGED (1<<24) /* use generic inode tagging */
++#define MS_TAGID (1<<25) /* use specific tag for this mount */
+ #define MS_ACTIVE (1<<30)
+ #define MS_NOUSER (1<<31)
+
+@@ -147,6 +149,8 @@ extern int dir_notify_enable;
+ #define S_NOCMTIME 128 /* Do not update file c/mtime */
+ #define S_SWAPFILE 256 /* Do not truncate: swapon got its bmaps */
+ #define S_PRIVATE 512 /* Inode is fs-internal */
++#define S_BARRIER 1024 /* Barrier for chroot() */
++#define S_IUNLINK 2048 /* Immutable unlink */
+
+ /*
+ * Note that nosuid etc flags are inode-specific: setting some file-system
+@@ -163,23 +167,35 @@ extern int dir_notify_enable;
+ */
+ #define __IS_FLG(inode,flg) ((inode)->i_sb->s_flags & (flg))
+
+-#define IS_RDONLY(inode) ((inode)->i_sb->s_flags & MS_RDONLY)
++#define IS_RDONLY(inode) __IS_FLG(inode, MS_RDONLY)
+ #define IS_SYNC(inode) (__IS_FLG(inode, MS_SYNCHRONOUS) || \
+ ((inode)->i_flags & S_SYNC))
+ #define IS_DIRSYNC(inode) (__IS_FLG(inode, MS_SYNCHRONOUS|MS_DIRSYNC) || \
+ ((inode)->i_flags & (S_SYNC|S_DIRSYNC)))
+ #define IS_MANDLOCK(inode) __IS_FLG(inode, MS_MANDLOCK)
++#define IS_TAGGED(inode) __IS_FLG(inode, MS_TAGGED)
+
+ #define IS_NOQUOTA(inode) ((inode)->i_flags & S_NOQUOTA)
+ #define IS_APPEND(inode) ((inode)->i_flags & S_APPEND)
+ #define IS_IMMUTABLE(inode) ((inode)->i_flags & S_IMMUTABLE)
++#define IS_IUNLINK(inode) ((inode)->i_flags & S_IUNLINK)
++#define IS_IXORUNLINK(inode) ((IS_IUNLINK(inode) ? S_IMMUTABLE : 0) ^ IS_IMMUTABLE(inode))
+ #define IS_POSIXACL(inode) __IS_FLG(inode, MS_POSIXACL)
+
++#define IS_BARRIER(inode) (S_ISDIR((inode)->i_mode) && ((inode)->i_flags & S_BARRIER))
+ #define IS_DEADDIR(inode) ((inode)->i_flags & S_DEAD)
+ #define IS_NOCMTIME(inode) ((inode)->i_flags & S_NOCMTIME)
+ #define IS_SWAPFILE(inode) ((inode)->i_flags & S_SWAPFILE)
+ #define IS_PRIVATE(inode) ((inode)->i_flags & S_PRIVATE)
+
++#ifdef CONFIG_VSERVER_COWBL
++# define IS_COW(inode) (IS_IUNLINK(inode) && IS_IMMUTABLE(inode))
++# define IS_COW_LINK(inode) (S_ISREG((inode)->i_mode) && ((inode)->i_nlink > 1))
++#else
++# define IS_COW(inode) (0)
++# define IS_COW_LINK(inode) (0)
++#endif
++
+ /* the read-only stuff doesn't really belong here, but any other place is
+ probably as bad and I don't want to create yet another include file. */
+
+@@ -253,11 +269,17 @@ extern int dir_notify_enable;
+ #define FS_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/
+ #define FS_EXTENT_FL 0x00080000 /* Extents */
+ #define FS_DIRECTIO_FL 0x00100000 /* Use direct i/o */
++#define FS_BARRIER_FL 0x04000000 /* Barrier for chroot() */
++#define FS_IUNLINK_FL 0x08000000 /* Immutable unlink */
+ #define FS_RESERVED_FL 0x80000000 /* reserved for ext2 lib */
+
++#ifdef CONFIG_VSERVER_LEGACY
++#define FS_FL_USER_VISIBLE 0x0803DFFF /* User visible flags */
++#define FS_FL_USER_MODIFIABLE 0x080380FF /* User modifiable flags */
++#else
+ #define FS_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */
+ #define FS_FL_USER_MODIFIABLE 0x000380FF /* User modifiable flags */
+-
++#endif
+
+ #define SYNC_FILE_RANGE_WAIT_BEFORE 1
+ #define SYNC_FILE_RANGE_WRITE 2
+@@ -324,6 +346,7 @@ typedef void (dio_iodone_t)(struct kiocb
+ #define ATTR_KILL_SUID 2048
+ #define ATTR_KILL_SGID 4096
+ #define ATTR_FILE 8192
++#define ATTR_TAG 16384
+
+ /*
+ * This is the Inode Attributes structure, used for notify_change(). It
+@@ -339,6 +362,7 @@ struct iattr {
+ umode_t ia_mode;
+ uid_t ia_uid;
+ gid_t ia_gid;
++ tag_t ia_tag;
+ loff_t ia_size;
+ struct timespec ia_atime;
+ struct timespec ia_mtime;
+@@ -352,6 +376,9 @@ struct iattr {
+ struct file *ia_file;
+ };
+
++#define ATTR_FLAG_BARRIER 512 /* Barrier for chroot() */
++#define ATTR_FLAG_IUNLINK 1024 /* Immutable unlink */
++
+ /*
+ * Includes for diskquotas.
+ */
+@@ -534,6 +561,7 @@ struct inode {
+ unsigned int i_nlink;
+ uid_t i_uid;
+ gid_t i_gid;
++ tag_t i_tag;
+ dev_t i_rdev;
+ unsigned long i_version;
+ loff_t i_size;
+@@ -724,6 +752,7 @@ struct file {
+ loff_t f_pos;
+ struct fown_struct f_owner;
+ unsigned int f_uid, f_gid;
++ xid_t f_xid;
+ struct file_ra_state f_ra;
+
+ unsigned long f_version;
+@@ -806,6 +835,7 @@ struct file_lock {
+ unsigned char fl_type;
+ loff_t fl_start;
+ loff_t fl_end;
++ xid_t fl_xid;
+
+ struct fasync_struct * fl_fasync; /* for lease break notifications */
+ unsigned long fl_break_time; /* for nonblocking lease breaks */
+@@ -979,12 +1009,12 @@ extern void unlock_super(struct super_bl
+ */
+ extern int vfs_permission(struct nameidata *, int);
+ extern int vfs_create(struct inode *, struct dentry *, int, struct nameidata *);
+-extern int vfs_mkdir(struct inode *, struct dentry *, int);
+-extern int vfs_mknod(struct inode *, struct dentry *, int, dev_t);
+-extern int vfs_symlink(struct inode *, struct dentry *, const char *, int);
+-extern int vfs_link(struct dentry *, struct inode *, struct dentry *);
+-extern int vfs_rmdir(struct inode *, struct dentry *);
+-extern int vfs_unlink(struct inode *, struct dentry *);
++extern int vfs_mkdir(struct inode *, struct dentry *, int, struct nameidata *);
++extern int vfs_mknod(struct inode *, struct dentry *, int, dev_t, struct nameidata *);
++extern int vfs_symlink(struct inode *, struct dentry *, const char *, int, struct nameidata *);
++extern int vfs_link(struct dentry *, struct inode *, struct dentry *, struct nameidata *);
++extern int vfs_rmdir(struct inode *, struct dentry *, struct nameidata *);
++extern int vfs_unlink(struct inode *, struct dentry *, struct nameidata *);
+ extern int vfs_rename(struct inode *, struct dentry *, struct inode *, struct dentry *);
+
+ /*
+@@ -1124,6 +1154,7 @@ struct inode_operations {
+ ssize_t (*listxattr) (struct dentry *, char *, size_t);
+ int (*removexattr) (struct dentry *, const char *);
+ void (*truncate_range)(struct inode *, loff_t, loff_t);
++ int (*sync_flags) (struct inode *);
+ };
+
+ struct seq_file;
+@@ -1139,6 +1170,7 @@ extern ssize_t vfs_readv(struct file *,
+ unsigned long, loff_t *);
+ extern ssize_t vfs_writev(struct file *, const struct iovec __user *,
+ unsigned long, loff_t *);
++ssize_t vfs_sendfile(struct file *, struct file *, loff_t *, size_t, loff_t);
+
+ /*
+ * NOTE: write_inode, delete_inode, clear_inode, put_inode can be called
+@@ -1717,6 +1749,7 @@ extern ssize_t generic_file_buffered_wri
+ extern ssize_t do_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos);
+ extern ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos);
+ extern ssize_t generic_file_sendfile(struct file *, loff_t *, size_t, read_actor_t, void *);
++extern ssize_t generic_file_sendpage(struct file *, struct page *, int, size_t, loff_t *, int);
+ extern void do_generic_mapping_read(struct address_space *mapping,
+ struct file_ra_state *, struct file *,
+ loff_t *, read_descriptor_t *, read_actor_t);
+@@ -1850,6 +1883,7 @@ extern int dcache_dir_open(struct inode
+ extern int dcache_dir_close(struct inode *, struct file *);
+ extern loff_t dcache_dir_lseek(struct file *, loff_t, int);
+ extern int dcache_readdir(struct file *, void *, filldir_t);
++extern int dcache_readdir_filter(struct file *, void *, filldir_t, int (*)(struct dentry *));
+ extern int simple_getattr(struct vfsmount *, struct dentry *, struct kstat *);
+ extern int simple_statfs(struct dentry *, struct kstatfs *);
+ extern int simple_link(struct dentry *, struct inode *, struct dentry *);
+diff -NurpP --minimal linux-2.6.20.4/include/linux/init_task.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/init_task.h
+--- linux-2.6.20.4/include/linux/init_task.h 2007-02-06 03:01:51 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/init_task.h 2007-02-06 03:05:22 +0100
+@@ -141,6 +141,10 @@ extern struct group_info init_groups;
+ .pi_lock = SPIN_LOCK_UNLOCKED, \
+ INIT_TRACE_IRQFLAGS \
+ INIT_LOCKDEP \
++ .xid = 0, \
++ .vx_info = NULL, \
++ .nid = 0, \
++ .nx_info = NULL, \
+ }
+
+
+diff -NurpP --minimal linux-2.6.20.4/include/linux/ipc.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/ipc.h
+--- linux-2.6.20.4/include/linux/ipc.h 2006-11-30 21:19:38 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/ipc.h 2007-02-06 03:05:22 +0100
+@@ -63,6 +63,7 @@ struct kern_ipc_perm
+ key_t key;
+ uid_t uid;
+ gid_t gid;
++ xid_t xid;
+ uid_t cuid;
+ gid_t cgid;
+ mode_t mode;
+diff -NurpP --minimal linux-2.6.20.4/include/linux/loop.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/loop.h
+--- linux-2.6.20.4/include/linux/loop.h 2006-11-30 21:19:38 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/loop.h 2007-02-06 03:05:22 +0100
+@@ -45,6 +45,7 @@ struct loop_device {
+ struct loop_func_table *lo_encryption;
+ __u32 lo_init[2];
+ uid_t lo_key_owner; /* Who set the key */
++ xid_t lo_xid;
+ int (*ioctl)(struct loop_device *, int cmd,
+ unsigned long arg);
+
+diff -NurpP --minimal linux-2.6.20.4/include/linux/major.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/major.h
+--- linux-2.6.20.4/include/linux/major.h 2006-06-18 04:55:19 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/major.h 2007-02-06 03:05:22 +0100
+@@ -15,6 +15,7 @@
+ #define HD_MAJOR IDE0_MAJOR
+ #define PTY_SLAVE_MAJOR 3
+ #define TTY_MAJOR 4
++#define VROOT_MAJOR 4
+ #define TTYAUX_MAJOR 5
+ #define LP_MAJOR 6
+ #define VCS_MAJOR 7
+diff -NurpP --minimal linux-2.6.20.4/include/linux/mount.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/mount.h
+--- linux-2.6.20.4/include/linux/mount.h 2007-02-06 03:01:51 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/mount.h 2007-02-06 03:41:22 +0100
+@@ -28,12 +28,16 @@ struct mnt_namespace;
+ #define MNT_NOATIME 0x08
+ #define MNT_NODIRATIME 0x10
+ #define MNT_RELATIME 0x20
++#define MNT_RDONLY 0x40
++
++#define MNT_IS_RDONLY(m) ((m) && ((m)->mnt_flags & MNT_RDONLY))
+
+ #define MNT_SHRINKABLE 0x100
+
+ #define MNT_SHARED 0x1000 /* if the vfsmount is a shared mount */
+ #define MNT_UNBINDABLE 0x2000 /* if the vfsmount is a unbindable mount */
+ #define MNT_PNODE_MASK 0x3000 /* propogation flag mask */
++#define MNT_TAGID 0x8000
+
+ struct vfsmount {
+ struct list_head mnt_hash;
+@@ -55,6 +59,7 @@ struct vfsmount {
+ struct vfsmount *mnt_master; /* slave is on master->mnt_slave_list */
+ struct mnt_namespace *mnt_ns; /* containing namespace */
+ int mnt_pinned;
++ tag_t mnt_tag; /* tagging used for vfsmount */
+ };
+
+ static inline struct vfsmount *mntget(struct vfsmount *mnt)
+diff -NurpP --minimal linux-2.6.20.4/include/linux/net.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/net.h
+--- linux-2.6.20.4/include/linux/net.h 2007-02-06 03:01:51 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/net.h 2007-02-06 03:05:22 +0100
+@@ -63,6 +63,7 @@ typedef enum {
+ #define SOCK_NOSPACE 2
+ #define SOCK_PASSCRED 3
+ #define SOCK_PASSSEC 4
++#define SOCK_USER_SOCKET 5
+
+ #ifndef ARCH_HAS_SOCKET_TYPES
+ /**
+diff -NurpP --minimal linux-2.6.20.4/include/linux/nfs_mount.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/nfs_mount.h
+--- linux-2.6.20.4/include/linux/nfs_mount.h 2005-08-29 22:25:42 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/nfs_mount.h 2007-02-06 03:05:22 +0100
+@@ -61,6 +61,7 @@ struct nfs_mount_data {
+ #define NFS_MOUNT_NOACL 0x0800 /* 4 */
+ #define NFS_MOUNT_STRICTLOCK 0x1000 /* reserved for NFSv4 */
+ #define NFS_MOUNT_SECFLAVOUR 0x2000 /* 5 */
++#define NFS_MOUNT_TAGGED 0x8000 /* context tagging */
+ #define NFS_MOUNT_FLAGMASK 0xFFFF
+
+ #endif
+diff -NurpP --minimal linux-2.6.20.4/include/linux/nsproxy.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/nsproxy.h
+--- linux-2.6.20.4/include/linux/nsproxy.h 2007-02-06 03:01:51 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/nsproxy.h 2007-02-06 05:43:36 +0100
+@@ -36,6 +36,11 @@ int copy_namespaces(int flags, struct ta
+ void get_task_namespaces(struct task_struct *tsk);
+ void free_nsproxy(struct nsproxy *ns);
+
++static inline void get_nsproxy(struct nsproxy *ns)
++{
++ atomic_inc(&ns->count);
++}
++
+ static inline void put_nsproxy(struct nsproxy *ns)
+ {
+ if (atomic_dec_and_test(&ns->count)) {
+diff -NurpP --minimal linux-2.6.20.4/include/linux/pid.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/pid.h
+--- linux-2.6.20.4/include/linux/pid.h 2007-02-06 03:01:51 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/pid.h 2007-03-10 18:02:51 +0100
+@@ -8,7 +8,8 @@ enum pid_type
+ PIDTYPE_PID,
+ PIDTYPE_PGID,
+ PIDTYPE_SID,
+- PIDTYPE_MAX
++ PIDTYPE_MAX,
++ PIDTYPE_REALPID
+ };
+
+ /*
+@@ -112,7 +113,8 @@ static inline pid_t pid_nr(struct pid *p
+ struct pid *pid___ = find_pid(who); \
+ if (pid___ != NULL) \
+ hlist_for_each_entry_rcu((task), pos___, \
+- &pid___->tasks[type], pids[type].node) {
++ &pid___->tasks[type], pids[type].node) \
++ if (vx_check((task)->xid, VS_ADMIN_P|VS_IDENT)) {
+
+ #define while_each_task_pid(who, type, task) \
+ } \
+@@ -124,7 +126,8 @@ static inline pid_t pid_nr(struct pid *p
+ struct hlist_node *pos___; \
+ if (pid != NULL) \
+ hlist_for_each_entry_rcu((task), pos___, \
+- &pid->tasks[type], pids[type].node) {
++ &pid->tasks[type], pids[type].node) \
++ if (vx_check((task)->xid, VS_ADMIN_P|VS_IDENT)) {
+
+ #define while_each_pid_task(pid, type, task) \
+ } \
+diff -NurpP --minimal linux-2.6.20.4/include/linux/proc_fs.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/proc_fs.h
+--- linux-2.6.20.4/include/linux/proc_fs.h 2006-11-30 21:19:39 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/proc_fs.h 2007-02-06 05:02:33 +0100
+@@ -54,6 +54,7 @@ struct proc_dir_entry {
+ nlink_t nlink;
+ uid_t uid;
+ gid_t gid;
++ int vx_flags;
+ loff_t size;
+ struct inode_operations * proc_iops;
+ const struct file_operations * proc_fops;
+@@ -244,13 +245,20 @@ static inline void kclist_add(struct kco
+ extern void kclist_add(struct kcore_list *, void *, size_t);
+ #endif
+
++struct vx_info;
++struct nx_info;
++
+ union proc_op {
+ int (*proc_get_link)(struct inode *, struct dentry **, struct vfsmount **);
+ int (*proc_read)(struct task_struct *task, char *page);
++ int (*proc_vs_read)(char *page);
++ int (*proc_vxi_read)(struct vx_info *vxi, char *page);
++ int (*proc_nxi_read)(struct nx_info *nxi, char *page);
+ };
+
+ struct proc_inode {
+ struct pid *pid;
++ int vx_flags;
+ int fd;
+ union proc_op op;
+ struct proc_dir_entry *pde;
+diff -NurpP --minimal linux-2.6.20.4/include/linux/reiserfs_fs.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/reiserfs_fs.h
+--- linux-2.6.20.4/include/linux/reiserfs_fs.h 2007-02-06 03:01:52 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/reiserfs_fs.h 2007-02-06 03:05:22 +0100
+@@ -821,6 +821,10 @@ struct stat_data_v1 {
+ #define REISERFS_COMPR_FL FS_COMPR_FL
+ #define REISERFS_NOTAIL_FL FS_NOTAIL_FL
+
++/* unfortunately reiserfs sdattr is only 16 bit */
++#define REISERFS_BARRIER_FL (FS_BARRIER_FL >> 16)
++#define REISERFS_IUNLINK_FL (FS_IUNLINK_FL >> 16)
++
+ /* persistent flags that file inherits from the parent directory */
+ #define REISERFS_INHERIT_MASK ( REISERFS_IMMUTABLE_FL | \
+ REISERFS_SYNC_FL | \
+@@ -830,6 +834,14 @@ struct stat_data_v1 {
+ REISERFS_COMPR_FL | \
+ REISERFS_NOTAIL_FL )
+
++#ifdef CONFIG_VSERVER_LEGACY
++#define REISERFS_FL_USER_VISIBLE (REISERFS_IUNLINK_FL|0x80FF)
++#define REISERFS_FL_USER_MODIFIABLE (REISERFS_IUNLINK_FL|0x80FF)
++#else
++#define REISERFS_FL_USER_VISIBLE 0x80FF
++#define REISERFS_FL_USER_MODIFIABLE 0x80FF
++#endif
++
+ /* Stat Data on disk (reiserfs version of UFS disk inode minus the
+ address blocks) */
+ struct stat_data {
+@@ -1901,6 +1913,7 @@ static inline void reiserfs_update_sd(st
+ void sd_attrs_to_i_attrs(__u16 sd_attrs, struct inode *inode);
+ void i_attrs_to_sd_attrs(struct inode *inode, __u16 * sd_attrs);
+ int reiserfs_setattr(struct dentry *dentry, struct iattr *attr);
++int reiserfs_sync_flags(struct inode *inode);
+
+ /* namei.c */
+ void set_de_name_and_namelen(struct reiserfs_dir_entry *de);
+diff -NurpP --minimal linux-2.6.20.4/include/linux/reiserfs_fs_sb.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/reiserfs_fs_sb.h
+--- linux-2.6.20.4/include/linux/reiserfs_fs_sb.h 2007-02-06 03:01:52 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/reiserfs_fs_sb.h 2007-02-06 03:05:22 +0100
+@@ -457,6 +457,7 @@ enum reiserfs_mount_options {
+ REISERFS_POSIXACL,
+ REISERFS_BARRIER_NONE,
+ REISERFS_BARRIER_FLUSH,
++ REISERFS_TAGGED,
+
+ /* Actions on error */
+ REISERFS_ERROR_PANIC,
+diff -NurpP --minimal linux-2.6.20.4/include/linux/sched.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/sched.h
+--- linux-2.6.20.4/include/linux/sched.h 2007-02-06 03:01:52 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/sched.h 2007-02-06 03:42:34 +0100
+@@ -26,6 +26,7 @@
+ #define CLONE_STOPPED 0x02000000 /* Start in stopped state */
+ #define CLONE_NEWUTS 0x04000000 /* New utsname group? */
+ #define CLONE_NEWIPC 0x08000000 /* New ipcs */
++#define CLONE_KTHREAD 0x10000000 /* clone a kernel thread */
+
+ /*
+ * Scheduling policies
+@@ -54,6 +55,7 @@ struct sched_param {
+ #include <linux/cpumask.h>
+ #include <linux/errno.h>
+ #include <linux/nodemask.h>
++// #include <linux/vs_base.h>
+
+ #include <asm/system.h>
+ #include <asm/semaphore.h>
+@@ -93,7 +95,7 @@ struct futex_pi_state;
+ * List of flags we want to share for kernel threads,
+ * if only because they are not used by them anyway.
+ */
+-#define CLONE_KERNEL (CLONE_FS | CLONE_FILES | CLONE_SIGHAND)
++#define CLONE_KERNEL (CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_KTHREAD)
+
+ /*
+ * These are the constant used to fake the fixed-point load-average
+@@ -145,12 +147,13 @@ extern unsigned long weighted_cpuload(co
+ #define TASK_UNINTERRUPTIBLE 2
+ #define TASK_STOPPED 4
+ #define TASK_TRACED 8
++#define TASK_ONHOLD 16
+ /* in tsk->exit_state */
+-#define EXIT_ZOMBIE 16
+-#define EXIT_DEAD 32
++#define EXIT_ZOMBIE 32
++#define EXIT_DEAD 64
+ /* in tsk->state again */
+-#define TASK_NONINTERACTIVE 64
+-#define TASK_DEAD 128
++#define TASK_NONINTERACTIVE 128
++#define TASK_DEAD 256
+
+ #define __set_task_state(tsk, state_value) \
+ do { (tsk)->state = (state_value); } while (0)
+@@ -274,27 +277,30 @@ extern void arch_unmap_area_topdown(stru
+ * The mm counters are not protected by its page_table_lock,
+ * so must be incremented atomically.
+ */
+-#define set_mm_counter(mm, member, value) atomic_long_set(&(mm)->_##member, value)
+-#define get_mm_counter(mm, member) ((unsigned long)atomic_long_read(&(mm)->_##member))
+-#define add_mm_counter(mm, member, value) atomic_long_add(value, &(mm)->_##member)
+-#define inc_mm_counter(mm, member) atomic_long_inc(&(mm)->_##member)
+-#define dec_mm_counter(mm, member) atomic_long_dec(&(mm)->_##member)
+ typedef atomic_long_t mm_counter_t;
++#define __set_mm_counter(mm, member, value) \
++ atomic_long_set(&(mm)->_##member, value)
++#define get_mm_counter(mm, member) \
++ ((unsigned long)atomic_long_read(&(mm)->_##member))
+
+ #else /* NR_CPUS < CONFIG_SPLIT_PTLOCK_CPUS */
+ /*
+ * The mm counters are protected by its page_table_lock,
+ * so can be incremented directly.
+ */
+-#define set_mm_counter(mm, member, value) (mm)->_##member = (value)
+-#define get_mm_counter(mm, member) ((mm)->_##member)
+-#define add_mm_counter(mm, member, value) (mm)->_##member += (value)
+-#define inc_mm_counter(mm, member) (mm)->_##member++
+-#define dec_mm_counter(mm, member) (mm)->_##member--
+ typedef unsigned long mm_counter_t;
++#define __set_mm_counter(mm, member, value) (mm)->_##member = (value)
++#define get_mm_counter(mm, member) ((mm)->_##member)
+
+ #endif /* NR_CPUS < CONFIG_SPLIT_PTLOCK_CPUS */
+
++#define set_mm_counter(mm, member, value) \
++ vx_ ## member ## pages_sub((mm), (get_mm_counter(mm, member) - value))
++#define add_mm_counter(mm, member, value) \
++ vx_ ## member ## pages_add((mm), (value))
++#define inc_mm_counter(mm, member) vx_ ## member ## pages_inc((mm))
++#define dec_mm_counter(mm, member) vx_ ## member ## pages_dec((mm))
++
+ #define get_mm_rss(mm) \
+ (get_mm_counter(mm, file_rss) + get_mm_counter(mm, anon_rss))
+ #define update_hiwater_rss(mm) do { \
+@@ -352,6 +358,7 @@ struct mm_struct {
+
+ /* Architecture-specific MM context */
+ mm_context_t context;
++ struct vx_info *mm_vx_info;
+
+ /* Swap token stuff */
+ /*
+@@ -555,9 +562,10 @@ struct user_struct {
+ /* Hash table maintenance information */
+ struct list_head uidhash_list;
+ uid_t uid;
++ xid_t xid;
+ };
+
+-extern struct user_struct *find_user(uid_t);
++extern struct user_struct *find_user(xid_t, uid_t);
+
+ extern struct user_struct root_user;
+ #define INIT_USER (&root_user)
+@@ -949,6 +957,14 @@ struct task_struct {
+
+ void *security;
+ struct audit_context *audit_context;
++
++/* vserver context data */
++ struct vx_info *vx_info;
++ struct nx_info *nx_info;
++
++ xid_t xid;
++ nid_t nid;
++
+ seccomp_t seccomp;
+
+ /* Thread group tracking */
+@@ -1263,12 +1279,16 @@ extern struct task_struct init_task;
+
+ extern struct mm_struct init_mm;
+
+-#define find_task_by_pid(nr) find_task_by_pid_type(PIDTYPE_PID, nr)
++#define find_task_by_real_pid(nr) \
++ find_task_by_pid_type(PIDTYPE_REALPID, nr)
++#define find_task_by_pid(nr) \
++ find_task_by_pid_type(PIDTYPE_PID, nr)
++
+ extern struct task_struct *find_task_by_pid_type(int type, int pid);
+ extern void __set_special_pids(pid_t session, pid_t pgrp);
+
+ /* per-UID process charging. */
+-extern struct user_struct * alloc_uid(uid_t);
++extern struct user_struct * alloc_uid(xid_t, uid_t);
+ static inline struct user_struct *get_uid(struct user_struct *u)
+ {
+ atomic_inc(&u->__count);
+diff -NurpP --minimal linux-2.6.20.4/include/linux/shmem_fs.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/shmem_fs.h
+--- linux-2.6.20.4/include/linux/shmem_fs.h 2006-11-30 21:19:39 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/shmem_fs.h 2007-02-06 03:05:22 +0100
+@@ -8,6 +8,9 @@
+
+ #define SHMEM_NR_DIRECT 16
+
++#define TMPFS_SUPER_MAGIC 0x01021994
++
++
+ struct shmem_inode_info {
+ spinlock_t lock;
+ unsigned long flags;
+diff -NurpP --minimal linux-2.6.20.4/include/linux/stat.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/stat.h
+--- linux-2.6.20.4/include/linux/stat.h 2006-11-30 21:19:40 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/stat.h 2007-02-06 03:05:22 +0100
+@@ -63,6 +63,7 @@ struct kstat {
+ unsigned int nlink;
+ uid_t uid;
+ gid_t gid;
++ tag_t tag;
+ dev_t rdev;
+ loff_t size;
+ struct timespec atime;
+diff -NurpP --minimal linux-2.6.20.4/include/linux/sunrpc/auth.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/sunrpc/auth.h
+--- linux-2.6.20.4/include/linux/sunrpc/auth.h 2006-11-30 21:19:40 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/sunrpc/auth.h 2007-02-06 03:05:22 +0100
+@@ -24,6 +24,7 @@
+ struct auth_cred {
+ uid_t uid;
+ gid_t gid;
++ tag_t tag;
+ struct group_info *group_info;
+ };
+
+diff -NurpP --minimal linux-2.6.20.4/include/linux/sunrpc/clnt.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/sunrpc/clnt.h
+--- linux-2.6.20.4/include/linux/sunrpc/clnt.h 2007-02-06 03:01:52 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/sunrpc/clnt.h 2007-02-06 03:05:22 +0100
+@@ -42,7 +42,8 @@ struct rpc_clnt {
+ cl_intr : 1,/* interruptible */
+ cl_autobind : 1,/* use getport() */
+ cl_oneshot : 1,/* dispose after use */
+- cl_dead : 1;/* abandoned */
++ cl_dead : 1,/* abandoned */
++ cl_tag : 1;/* context tagging */
+
+ struct rpc_rtt * cl_rtt; /* RTO estimator data */
+
+diff -NurpP --minimal linux-2.6.20.4/include/linux/syscalls.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/syscalls.h
+--- linux-2.6.20.4/include/linux/syscalls.h 2006-11-30 21:19:40 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/syscalls.h 2007-02-06 03:05:22 +0100
+@@ -294,6 +294,8 @@ asmlinkage long sys_symlink(const char _
+ asmlinkage long sys_unlink(const char __user *pathname);
+ asmlinkage long sys_rename(const char __user *oldname,
+ const char __user *newname);
++asmlinkage long sys_copyfile(const char __user *from, const char __user *to,
++ umode_t mode);
+ asmlinkage long sys_chmod(const char __user *filename, mode_t mode);
+ asmlinkage long sys_fchmod(unsigned int fd, mode_t mode);
+
+diff -NurpP --minimal linux-2.6.20.4/include/linux/sysctl.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/sysctl.h
+--- linux-2.6.20.4/include/linux/sysctl.h 2007-02-06 03:01:52 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/sysctl.h 2007-03-10 18:02:51 +0100
+@@ -101,6 +101,7 @@ enum
+ KERN_CAP_BSET=14, /* int: capability bounding set */
+ KERN_PANIC=15, /* int: panic timeout */
+ KERN_REALROOTDEV=16, /* real root device to mount after initrd */
++ KERN_VSHELPER=17, /* string: path to vshelper policy agent */
+
+ KERN_SPARC_REBOOT=21, /* reboot command on Sparc */
+ KERN_CTLALTDEL=22, /* int: allow ctl-alt-del to reboot */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/sysfs.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/sysfs.h
+--- linux-2.6.20.4/include/linux/sysfs.h 2007-02-06 03:01:52 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/sysfs.h 2007-02-06 03:05:22 +0100
+@@ -13,6 +13,8 @@
+ #include <linux/compiler.h>
+ #include <asm/atomic.h>
+
++#define SYSFS_SUPER_MAGIC 0x62656572
++
+ struct kobject;
+ struct module;
+
+diff -NurpP --minimal linux-2.6.20.4/include/linux/time.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/time.h
+--- linux-2.6.20.4/include/linux/time.h 2006-09-20 16:58:44 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/time.h 2007-02-06 03:05:22 +0100
+@@ -174,6 +174,9 @@ static inline void timespec_add_ns(struc
+ }
+ a->tv_nsec = ns;
+ }
++
++#include <linux/vs_time.h>
++
+ #endif /* __KERNEL__ */
+
+ #define NFDBITS __NFDBITS
+diff -NurpP --minimal linux-2.6.20.4/include/linux/types.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/types.h
+--- linux-2.6.20.4/include/linux/types.h 2007-02-06 03:01:52 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/types.h 2007-02-06 03:05:22 +0100
+@@ -39,6 +39,9 @@ typedef __kernel_uid32_t uid_t;
+ typedef __kernel_gid32_t gid_t;
+ typedef __kernel_uid16_t uid16_t;
+ typedef __kernel_gid16_t gid16_t;
++typedef unsigned int xid_t;
++typedef unsigned int nid_t;
++typedef unsigned int tag_t;
+
+ #ifdef CONFIG_UID16
+ /* This is defined by include/asm-{arch}/posix_types.h */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vroot.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vroot.h
+--- linux-2.6.20.4/include/linux/vroot.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vroot.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,51 @@
++
++/*
++ * include/linux/vroot.h
++ *
++ * written by Herbert Ptzl, 9/11/2002
++ * ported to 2.6 by Herbert Ptzl, 30/12/2004
++ *
++ * Copyright (C) 2002-2005 by Herbert Ptzl.
++ * Redistribution of this file is permitted under the
++ * GNU General Public License.
++ */
++
++#ifndef _LINUX_VROOT_H
++#define _LINUX_VROOT_H
++
++
++#ifdef __KERNEL__
++
++/* Possible states of device */
++enum {
++ Vr_unbound,
++ Vr_bound,
++};
++
++struct vroot_device {
++ int vr_number;
++ int vr_refcnt;
++
++ struct semaphore vr_ctl_mutex;
++ struct block_device *vr_device;
++ int vr_state;
++};
++
++
++typedef struct block_device *(vroot_grb_func)(struct block_device *);
++
++extern int register_vroot_grb(vroot_grb_func *);
++extern int unregister_vroot_grb(vroot_grb_func *);
++
++#endif /* __KERNEL__ */
++
++#define MAX_VROOT_DEFAULT 8
++
++/*
++ * IOCTL commands --- we will commandeer 0x56 ('V')
++ */
++
++#define VROOT_SET_DEV 0x5600
++#define VROOT_CLR_DEV 0x5601
++
++#endif /* _LINUX_VROOT_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vs_base.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_base.h
+--- linux-2.6.20.4/include/linux/vs_base.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_base.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,9 @@
++#ifndef _VS_BASE_H
++#define _VS_BASE_H
++
++#include "vserver/base.h"
++#include "vserver/debug.h"
++
++#else
++#warning duplicate inclusion
++#endif
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vs_context.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_context.h
+--- linux-2.6.20.4/include/linux/vs_context.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_context.h 2007-02-06 04:58:45 +0100
+@@ -0,0 +1,220 @@
++#ifndef _VS_CONTEXT_H
++#define _VS_CONTEXT_H
++
++#include "vserver/base.h"
++#include "vserver/context.h"
++#include "vserver/history.h"
++#include "vserver/debug.h"
++
++
++#define get_vx_info(i) __get_vx_info(i,__FILE__,__LINE__,__HERE__)
++
++static inline struct vx_info *__get_vx_info(struct vx_info *vxi,
++ const char *_file, int _line, void *_here)
++{
++ if (!vxi)
++ return NULL;
++
++ vxlprintk(VXD_CBIT(xid, 2), "get_vx_info(%p[#%d.%d])",
++ vxi, vxi?vxi->vx_id:0, vxi?atomic_read(&vxi->vx_usecnt):0,
++ _file, _line);
++ __vxh_get_vx_info(vxi, _here);
++
++ atomic_inc(&vxi->vx_usecnt);
++ return vxi;
++}
++
++
++extern void free_vx_info(struct vx_info *);
++
++#define put_vx_info(i) __put_vx_info(i,__FILE__,__LINE__,__HERE__)
++
++static inline void __put_vx_info(struct vx_info *vxi,
++ const char *_file, int _line, void *_here)
++{
++ if (!vxi)
++ return;
++
++ vxlprintk(VXD_CBIT(xid, 2), "put_vx_info(%p[#%d.%d])",
++ vxi, vxi?vxi->vx_id:0, vxi?atomic_read(&vxi->vx_usecnt):0,
++ _file, _line);
++ __vxh_put_vx_info(vxi, _here);
++
++ if (atomic_dec_and_test(&vxi->vx_usecnt))
++ free_vx_info(vxi);
++}
++
++
++#define init_vx_info(p,i) __init_vx_info(p,i,__FILE__,__LINE__,__HERE__)
++
++static inline void __init_vx_info(struct vx_info **vxp, struct vx_info *vxi,
++ const char *_file, int _line, void *_here)
++{
++ if (vxi) {
++ vxlprintk(VXD_CBIT(xid, 3),
++ "init_vx_info(%p[#%d.%d])",
++ vxi, vxi?vxi->vx_id:0,
++ vxi?atomic_read(&vxi->vx_usecnt):0,
++ _file, _line);
++ __vxh_init_vx_info(vxi, vxp, _here);
++
++ atomic_inc(&vxi->vx_usecnt);
++ }
++ *vxp = vxi;
++}
++
++
++#define set_vx_info(p,i) __set_vx_info(p,i,__FILE__,__LINE__,__HERE__)
++
++static inline void __set_vx_info(struct vx_info **vxp, struct vx_info *vxi,
++ const char *_file, int _line, void *_here)
++{
++ struct vx_info *vxo;
++
++ if (!vxi)
++ return;
++
++ vxlprintk(VXD_CBIT(xid, 3), "set_vx_info(%p[#%d.%d])",
++ vxi, vxi?vxi->vx_id:0,
++ vxi?atomic_read(&vxi->vx_usecnt):0,
++ _file, _line);
++ __vxh_set_vx_info(vxi, vxp, _here);
++
++ atomic_inc(&vxi->vx_usecnt);
++ vxo = xchg(vxp, vxi);
++ BUG_ON(vxo);
++}
++
++
++#define clr_vx_info(p) __clr_vx_info(p,__FILE__,__LINE__,__HERE__)
++
++static inline void __clr_vx_info(struct vx_info **vxp,
++ const char *_file, int _line, void *_here)
++{
++ struct vx_info *vxo;
++
++ vxo = xchg(vxp, NULL);
++ if (!vxo)
++ return;
++
++ vxlprintk(VXD_CBIT(xid, 3), "clr_vx_info(%p[#%d.%d])",
++ vxo, vxo?vxo->vx_id:0,
++ vxo?atomic_read(&vxo->vx_usecnt):0,
++ _file, _line);
++ __vxh_clr_vx_info(vxo, vxp, _here);
++
++ if (atomic_dec_and_test(&vxo->vx_usecnt))
++ free_vx_info(vxo);
++}
++
++
++#define claim_vx_info(v,p) \
++ __claim_vx_info(v,p,__FILE__,__LINE__,__HERE__)
++
++static inline void __claim_vx_info(struct vx_info *vxi,
++ struct task_struct *task,
++ const char *_file, int _line, void *_here)
++{
++ vxlprintk(VXD_CBIT(xid, 3), "claim_vx_info(%p[#%d.%d.%d]) %p",
++ vxi, vxi?vxi->vx_id:0,
++ vxi?atomic_read(&vxi->vx_usecnt):0,
++ vxi?atomic_read(&vxi->vx_tasks):0,
++ task, _file, _line);
++ __vxh_claim_vx_info(vxi, task, _here);
++
++ atomic_inc(&vxi->vx_tasks);
++}
++
++
++extern void unhash_vx_info(struct vx_info *);
++
++#define release_vx_info(v,p) \
++ __release_vx_info(v,p,__FILE__,__LINE__,__HERE__)
++
++static inline void __release_vx_info(struct vx_info *vxi,
++ struct task_struct *task,
++ const char *_file, int _line, void *_here)
++{
++ vxlprintk(VXD_CBIT(xid, 3), "release_vx_info(%p[#%d.%d.%d]) %p",
++ vxi, vxi?vxi->vx_id:0,
++ vxi?atomic_read(&vxi->vx_usecnt):0,
++ vxi?atomic_read(&vxi->vx_tasks):0,
++ task, _file, _line);
++ __vxh_release_vx_info(vxi, task, _here);
++
++ might_sleep();
++
++ if (atomic_dec_and_test(&vxi->vx_tasks))
++ unhash_vx_info(vxi);
++}
++
++
++#define task_get_vx_info(p) \
++ __task_get_vx_info(p,__FILE__,__LINE__,__HERE__)
++
++static inline struct vx_info *__task_get_vx_info(struct task_struct *p,
++ const char *_file, int _line, void *_here)
++{
++ struct vx_info *vxi;
++
++ task_lock(p);
++ vxlprintk(VXD_CBIT(xid, 5), "task_get_vx_info(%p)",
++ p, _file, _line);
++ vxi = __get_vx_info(p->vx_info, _file, _line, _here);
++ task_unlock(p);
++ return vxi;
++}
++
++
++static inline void __wakeup_vx_info(struct vx_info *vxi)
++{
++ if (waitqueue_active(&vxi->vx_wait))
++ wake_up_interruptible(&vxi->vx_wait);
++}
++
++
++#define enter_vx_info(v,s) __enter_vx_info(v,s,__FILE__,__LINE__)
++
++static inline void __enter_vx_info(struct vx_info *vxi,
++ struct vx_info_save *vxis, const char *_file, int _line)
++{
++ vxlprintk(VXD_CBIT(xid, 5), "enter_vx_info(%p[#%d],%p) %p[#%d,%p]",
++ vxi, vxi ? vxi->vx_id : 0, vxis, current,
++ current->xid, current->vx_info, _file, _line);
++ vxis->vxi = xchg(&current->vx_info, vxi);
++ vxis->xid = current->xid;
++ current->xid = vxi ? vxi->vx_id : 0;
++}
++
++#define leave_vx_info(s) __leave_vx_info(s,__FILE__,__LINE__)
++
++static inline void __leave_vx_info(struct vx_info_save *vxis,
++ const char *_file, int _line)
++{
++ vxlprintk(VXD_CBIT(xid, 5), "leave_vx_info(%p[#%d,%p]) %p[#%d,%p]",
++ vxis, vxis->xid, vxis->vxi, current,
++ current->xid, current->vx_info, _file, _line);
++ (void)xchg(&current->vx_info, vxis->vxi);
++ current->xid = vxis->xid;
++}
++
++
++static inline void __enter_vx_admin(struct vx_info_save *vxis)
++{
++ vxis->vxi = xchg(&current->vx_info, NULL);
++ vxis->xid = xchg(&current->xid, (xid_t)0);
++}
++
++static inline void __leave_vx_admin(struct vx_info_save *vxis)
++{
++ (void)xchg(&current->xid, vxis->xid);
++ (void)xchg(&current->vx_info, vxis->vxi);
++}
++
++extern void exit_vx_info(struct task_struct *, int);
++extern void exit_vx_info_early(struct task_struct *, int);
++
++
++#else
++#warning duplicate inclusion
++#endif
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vs_cowbl.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_cowbl.h
+--- linux-2.6.20.4/include/linux/vs_cowbl.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_cowbl.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,44 @@
++#ifndef _VS_COWBL_H
++#define _VS_COWBL_H
++
++#include <linux/fs.h>
++#include <linux/dcache.h>
++#include <linux/namei.h>
++
++extern struct dentry *cow_break_link(const char *pathname);
++
++static inline int cow_check_and_break(struct nameidata *nd)
++{
++ struct inode *inode = nd->dentry->d_inode;
++ int error = 0;
++ if (IS_RDONLY(inode) || MNT_IS_RDONLY(nd->mnt))
++ return -EROFS;
++ if (IS_COW(inode)) {
++ if (IS_COW_LINK(inode)) {
++ struct dentry *new_dentry, *old_dentry = nd->dentry;
++ char *path, *buf;
++
++ buf = kmalloc(PATH_MAX, GFP_KERNEL);
++ if (!buf) {
++ return -ENOMEM;
++ }
++ path = d_path(nd->dentry, nd->mnt, buf, PATH_MAX);
++ new_dentry = cow_break_link(path);
++ kfree(buf);
++ if (!IS_ERR(new_dentry)) {
++ nd->dentry = new_dentry;
++ dput(old_dentry);
++ } else
++ error = PTR_ERR(new_dentry);
++ } else {
++ inode->i_flags &= ~(S_IUNLINK|S_IMMUTABLE);
++ inode->i_ctime = CURRENT_TIME;
++ mark_inode_dirty(inode);
++ }
++ }
++ return error;
++}
++
++#else
++#warning duplicate inclusion
++#endif
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vs_cvirt.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_cvirt.h
+--- linux-2.6.20.4/include/linux/vs_cvirt.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_cvirt.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,49 @@
++#ifndef _VS_CVIRT_H
++#define _VS_CVIRT_H
++
++#include "vserver/cvirt.h"
++#include "vserver/context.h"
++#include "vserver/base.h"
++#include "vserver/debug.h"
++
++
++static inline void vx_activate_task(struct task_struct *p)
++{
++ struct vx_info *vxi;
++
++ if ((vxi = p->vx_info)) {
++ vx_update_load(vxi);
++ atomic_inc(&vxi->cvirt.nr_running);
++ }
++}
++
++static inline void vx_deactivate_task(struct task_struct *p)
++{
++ struct vx_info *vxi;
++
++ if ((vxi = p->vx_info)) {
++ vx_update_load(vxi);
++ atomic_dec(&vxi->cvirt.nr_running);
++ }
++}
++
++static inline void vx_uninterruptible_inc(struct task_struct *p)
++{
++ struct vx_info *vxi;
++
++ if ((vxi = p->vx_info))
++ atomic_inc(&vxi->cvirt.nr_uninterruptible);
++}
++
++static inline void vx_uninterruptible_dec(struct task_struct *p)
++{
++ struct vx_info *vxi;
++
++ if ((vxi = p->vx_info))
++ atomic_dec(&vxi->cvirt.nr_uninterruptible);
++}
++
++
++#else
++#warning duplicate inclusion
++#endif
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vs_dlimit.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_dlimit.h
+--- linux-2.6.20.4/include/linux/vs_dlimit.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_dlimit.h 2007-03-10 18:02:51 +0100
+@@ -0,0 +1,207 @@
++#ifndef _VS_DLIMIT_H
++#define _VS_DLIMIT_H
++
++#include "vserver/dlimit.h"
++#include "vserver/base.h"
++#include "vserver/debug.h"
++
++
++#define get_dl_info(i) __get_dl_info(i,__FILE__,__LINE__)
++
++static inline struct dl_info *__get_dl_info(struct dl_info *dli,
++ const char *_file, int _line)
++{
++ if (!dli)
++ return NULL;
++ vxlprintk(VXD_CBIT(dlim, 4), "get_dl_info(%p[#%d.%d])",
++ dli, dli?dli->dl_tag:0, dli?atomic_read(&dli->dl_usecnt):0,
++ _file, _line);
++ atomic_inc(&dli->dl_usecnt);
++ return dli;
++}
++
++
++#define free_dl_info(i) \
++ call_rcu(&i->dl_rcu, rcu_free_dl_info);
++
++#define put_dl_info(i) __put_dl_info(i,__FILE__,__LINE__)
++
++static inline void __put_dl_info(struct dl_info *dli,
++ const char *_file, int _line)
++{
++ if (!dli)
++ return;
++ vxlprintk(VXD_CBIT(dlim, 4), "put_dl_info(%p[#%d.%d])",
++ dli, dli?dli->dl_tag:0, dli?atomic_read(&dli->dl_usecnt):0,
++ _file, _line);
++ if (atomic_dec_and_test(&dli->dl_usecnt))
++ free_dl_info(dli);
++}
++
++
++#define __dlimit_char(d) ((d)?'*':' ')
++
++static inline int __dl_alloc_space(struct super_block *sb,
++ tag_t tag, dlsize_t nr, const char *file, int line)
++{
++ struct dl_info *dli = NULL;
++ int ret = 0;
++
++ if (nr == 0)
++ goto out;
++ dli = locate_dl_info(sb, tag);
++ if (!dli)
++ goto out;
++
++ spin_lock(&dli->dl_lock);
++ ret = (dli->dl_space_used + nr > dli->dl_space_total);
++ if (!ret)
++ dli->dl_space_used += nr;
++ spin_unlock(&dli->dl_lock);
++ put_dl_info(dli);
++out:
++ vxlprintk(VXD_CBIT(dlim, 1),
++ "ALLOC (%p,#%d)%c %lld bytes (%d)",
++ sb, tag, __dlimit_char(dli), (long long)nr,
++ ret, file, line);
++ return ret;
++}
++
++static inline void __dl_free_space(struct super_block *sb,
++ tag_t tag, dlsize_t nr, const char *_file, int _line)
++{
++ struct dl_info *dli = NULL;
++
++ if (nr == 0)
++ goto out;
++ dli = locate_dl_info(sb, tag);
++ if (!dli)
++ goto out;
++
++ spin_lock(&dli->dl_lock);
++ if (dli->dl_space_used > nr)
++ dli->dl_space_used -= nr;
++ else
++ dli->dl_space_used = 0;
++ spin_unlock(&dli->dl_lock);
++ put_dl_info(dli);
++out:
++ vxlprintk(VXD_CBIT(dlim, 1),
++ "FREE (%p,#%d)%c %lld bytes",
++ sb, tag, __dlimit_char(dli), (long long)nr,
++ _file, _line);
++}
++
++static inline int __dl_alloc_inode(struct super_block *sb,
++ tag_t tag, const char *_file, int _line)
++{
++ struct dl_info *dli;
++ int ret = 0;
++
++ dli = locate_dl_info(sb, tag);
++ if (!dli)
++ goto out;
++
++ spin_lock(&dli->dl_lock);
++ ret = (dli->dl_inodes_used >= dli->dl_inodes_total);
++ if (!ret)
++ dli->dl_inodes_used++;
++ spin_unlock(&dli->dl_lock);
++ put_dl_info(dli);
++out:
++ vxlprintk(VXD_CBIT(dlim, 0),
++ "ALLOC (%p,#%d)%c inode (%d)",
++ sb, tag, __dlimit_char(dli), ret, _file, _line);
++ return ret;
++}
++
++static inline void __dl_free_inode(struct super_block *sb,
++ tag_t tag, const char *_file, int _line)
++{
++ struct dl_info *dli;
++
++ dli = locate_dl_info(sb, tag);
++ if (!dli)
++ goto out;
++
++ spin_lock(&dli->dl_lock);
++ if (dli->dl_inodes_used > 1)
++ dli->dl_inodes_used--;
++ else
++ dli->dl_inodes_used = 0;
++ spin_unlock(&dli->dl_lock);
++ put_dl_info(dli);
++out:
++ vxlprintk(VXD_CBIT(dlim, 0),
++ "FREE (%p,#%d)%c inode",
++ sb, tag, __dlimit_char(dli), _file, _line);
++}
++
++static inline void __dl_adjust_block(struct super_block *sb, tag_t tag,
++ unsigned long long *free_blocks, unsigned long long *root_blocks,
++ const char *_file, int _line)
++{
++ struct dl_info *dli;
++ uint64_t broot, bfree;
++
++ dli = locate_dl_info(sb, tag);
++ if (!dli)
++ return;
++
++ spin_lock(&dli->dl_lock);
++ broot = (dli->dl_space_total -
++ (dli->dl_space_total >> 10) * dli->dl_nrlmult)
++ >> sb->s_blocksize_bits;
++ bfree = (dli->dl_space_total - dli->dl_space_used)
++ >> sb->s_blocksize_bits;
++ spin_unlock(&dli->dl_lock);
++
++ vxlprintk(VXD_CBIT(dlim, 2),
++ "ADJUST: %lld,%lld on %lld,%lld [mult=%d]",
++ (long long)bfree, (long long)broot,
++ *free_blocks, *root_blocks, dli->dl_nrlmult,
++ _file, _line);
++ if (free_blocks) {
++ if (*free_blocks > bfree)
++ *free_blocks = bfree;
++ }
++ if (root_blocks) {
++ if (*root_blocks > broot)
++ *root_blocks = broot;
++ }
++ put_dl_info(dli);
++}
++
++#define DLIMIT_ALLOC_SPACE(in, bytes) \
++ __dl_alloc_space((in)->i_sb, (in)->i_tag, (dlsize_t)(bytes), \
++ __FILE__, __LINE__ )
++
++#define DLIMIT_FREE_SPACE(in, bytes) \
++ __dl_free_space((in)->i_sb, (in)->i_tag, (dlsize_t)(bytes), \
++ __FILE__, __LINE__ )
++
++#define DLIMIT_ALLOC_BLOCK(in, nr) \
++ __dl_alloc_space((in)->i_sb, (in)->i_tag, \
++ ((dlsize_t)(nr)) << (in)->i_sb->s_blocksize_bits, \
++ __FILE__, __LINE__ )
++
++#define DLIMIT_FREE_BLOCK(in, nr) \
++ __dl_free_space((in)->i_sb, (in)->i_tag, \
++ ((dlsize_t)(nr)) << (in)->i_sb->s_blocksize_bits, \
++ __FILE__, __LINE__ )
++
++
++#define DLIMIT_ALLOC_INODE(in) \
++ __dl_alloc_inode((in)->i_sb, (in)->i_tag, __FILE__, __LINE__ )
++
++#define DLIMIT_FREE_INODE(in) \
++ __dl_free_inode((in)->i_sb, (in)->i_tag, __FILE__, __LINE__ )
++
++
++#define DLIMIT_ADJUST_BLOCK(sb, tag, fb, rb) \
++ __dl_adjust_block(sb, tag, fb, rb, __FILE__, __LINE__ )
++
++
++#else
++#warning duplicate inclusion
++#endif
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vs_limit.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_limit.h
+--- linux-2.6.20.4/include/linux/vs_limit.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_limit.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,140 @@
++#ifndef _VS_LIMIT_H
++#define _VS_LIMIT_H
++
++#include "vserver/limit.h"
++#include "vserver/base.h"
++#include "vserver/context.h"
++#include "vserver/debug.h"
++#include "vserver/context.h"
++#include "vserver/limit_int.h"
++
++
++#define vx_acc_cres(v,d,p,r) \
++ __vx_acc_cres(v, r, d, p, __FILE__, __LINE__)
++
++#define vx_acc_cres_cond(x,d,p,r) \
++ __vx_acc_cres(((x) == vx_current_xid()) ? current->vx_info : 0, \
++ r, d, p, __FILE__, __LINE__)
++
++
++#define vx_add_cres(v,a,p,r) \
++ __vx_add_cres(v, r, a, p, __FILE__, __LINE__)
++#define vx_sub_cres(v,a,p,r) vx_add_cres(v,-(a),p,r)
++
++#define vx_add_cres_cond(x,a,p,r) \
++ __vx_add_cres(((x) == vx_current_xid()) ? current->vx_info : 0, \
++ r, a, p, __FILE__, __LINE__)
++#define vx_sub_cres_cond(x,a,p,r) vx_add_cres_cond(x,-(a),p,r)
++
++
++/* process and file limits */
++
++#define vx_nproc_inc(p) \
++ vx_acc_cres((p)->vx_info, 1, p, RLIMIT_NPROC)
++
++#define vx_nproc_dec(p) \
++ vx_acc_cres((p)->vx_info,-1, p, RLIMIT_NPROC)
++
++#define vx_files_inc(f) \
++ vx_acc_cres_cond((f)->f_xid, 1, f, RLIMIT_NOFILE)
++
++#define vx_files_dec(f) \
++ vx_acc_cres_cond((f)->f_xid,-1, f, RLIMIT_NOFILE)
++
++#define vx_locks_inc(l) \
++ vx_acc_cres_cond((l)->fl_xid, 1, l, RLIMIT_LOCKS)
++
++#define vx_locks_dec(l) \
++ vx_acc_cres_cond((l)->fl_xid,-1, l, RLIMIT_LOCKS)
++
++#define vx_openfd_inc(f) \
++ vx_acc_cres(current->vx_info, 1, (void *)(long)(f), VLIMIT_OPENFD)
++
++#define vx_openfd_dec(f) \
++ vx_acc_cres(current->vx_info,-1, (void *)(long)(f), VLIMIT_OPENFD)
++
++
++#define vx_cres_avail(v,n,r) \
++ __vx_cres_avail(v, r, n, __FILE__, __LINE__)
++
++
++#define vx_nproc_avail(n) \
++ vx_cres_avail(current->vx_info, n, RLIMIT_NPROC)
++
++#define vx_files_avail(n) \
++ vx_cres_avail(current->vx_info, n, RLIMIT_NOFILE)
++
++#define vx_locks_avail(n) \
++ vx_cres_avail(current->vx_info, n, RLIMIT_LOCKS)
++
++#define vx_openfd_avail(n) \
++ vx_cres_avail(current->vx_info, n, VLIMIT_OPENFD)
++
++
++/* dentry limits */
++
++#define vx_dentry_inc(d) do { \
++ if (atomic_read(&d->d_count) == 1) \
++ vx_acc_cres(current->vx_info, 1, d, VLIMIT_DENTRY); \
++ } while (0)
++
++#define vx_dentry_dec(d) do { \
++ if (atomic_read(&d->d_count) == 0) \
++ vx_acc_cres(current->vx_info,-1, d, VLIMIT_DENTRY); \
++ } while (0)
++
++#define vx_dentry_avail(n) \
++ vx_cres_avail(current->vx_info, n, VLIMIT_DENTRY)
++
++
++/* socket limits */
++
++#define vx_sock_inc(s) \
++ vx_acc_cres((s)->sk_vx_info, 1, s, VLIMIT_NSOCK)
++
++#define vx_sock_dec(s) \
++ vx_acc_cres((s)->sk_vx_info,-1, s, VLIMIT_NSOCK)
++
++#define vx_sock_avail(n) \
++ vx_cres_avail(current->vx_info, n, VLIMIT_NSOCK)
++
++
++/* ipc resource limits */
++
++#define vx_ipcmsg_add(v,u,a) \
++ vx_add_cres(v, a, u, RLIMIT_MSGQUEUE)
++
++#define vx_ipcmsg_sub(v,u,a) \
++ vx_sub_cres(v, a, u, RLIMIT_MSGQUEUE)
++
++#define vx_ipcmsg_avail(v,a) \
++ vx_cres_avail(v, a, RLIMIT_MSGQUEUE)
++
++
++#define vx_ipcshm_add(v,k,a) \
++ vx_add_cres(v, a, (void *)(long)(k), VLIMIT_SHMEM)
++
++#define vx_ipcshm_sub(v,k,a) \
++ vx_sub_cres(v, a, (void *)(long)(k), VLIMIT_SHMEM)
++
++#define vx_ipcshm_avail(v,a) \
++ vx_cres_avail(v, a, VLIMIT_SHMEM)
++
++
++#define vx_semary_inc(a) \
++ vx_acc_cres(current->vx_info, 1, a, VLIMIT_SEMARY)
++
++#define vx_semary_dec(a) \
++ vx_acc_cres(current->vx_info,-1, a, VLIMIT_SEMARY)
++
++
++#define vx_nsems_add(a,n) \
++ vx_add_cres(current->vx_info, n, a, VLIMIT_NSEMS)
++
++#define vx_nsems_sub(a,n) \
++ vx_sub_cres(current->vx_info, n, a, VLIMIT_NSEMS)
++
++
++#else
++#warning duplicate inclusion
++#endif
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vs_memory.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_memory.h
+--- linux-2.6.20.4/include/linux/vs_memory.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_memory.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,159 @@
++#ifndef _VS_MEMORY_H
++#define _VS_MEMORY_H
++
++#include "vserver/limit.h"
++#include "vserver/base.h"
++#include "vserver/context.h"
++#include "vserver/debug.h"
++#include "vserver/context.h"
++#include "vserver/limit_int.h"
++
++
++#define __acc_add_long(a,v) (*(v) += (a))
++#define __acc_inc_long(v) (++*(v))
++#define __acc_dec_long(v) (--*(v))
++
++#if NR_CPUS >= CONFIG_SPLIT_PTLOCK_CPUS
++#define __acc_add_atomic(a,v) atomic_long_add(a,v)
++#define __acc_inc_atomic(v) atomic_long_inc(v)
++#define __acc_dec_atomic(v) atomic_long_dec(v)
++#else /* NR_CPUS < CONFIG_SPLIT_PTLOCK_CPUS */
++#define __acc_add_atomic(a,v) __acc_add_long(a,v)
++#define __acc_inc_atomic(v) __acc_inc_long(v)
++#define __acc_dec_atomic(v) __acc_dec_long(v)
++#endif /* NR_CPUS < CONFIG_SPLIT_PTLOCK_CPUS */
++
++
++#define vx_acc_page(m,d,v,r) do { \
++ if ((d) > 0) \
++ __acc_inc_long(&(m->v)); \
++ else \
++ __acc_dec_long(&(m->v)); \
++ __vx_acc_cres(m->mm_vx_info, r, d, m, __FILE__, __LINE__); \
++} while (0)
++
++#define vx_acc_page_atomic(m,d,v,r) do { \
++ if ((d) > 0) \
++ __acc_inc_atomic(&(m->v)); \
++ else \
++ __acc_dec_atomic(&(m->v)); \
++ __vx_acc_cres(m->mm_vx_info, r, d, m, __FILE__, __LINE__); \
++} while (0)
++
++
++#define vx_acc_pages(m,p,v,r) do { \
++ unsigned long __p = (p); \
++ __acc_add_long(__p, &(m->v)); \
++ __vx_add_cres(m->mm_vx_info, r, __p, m, __FILE__, __LINE__); \
++} while (0)
++
++#define vx_acc_pages_atomic(m,p,v,r) do { \
++ unsigned long __p = (p); \
++ __acc_add_atomic(__p, &(m->v)); \
++ __vx_add_cres(m->mm_vx_info, r, __p, m, __FILE__, __LINE__); \
++} while (0)
++
++
++
++#define vx_acc_vmpage(m,d) \
++ vx_acc_page(m, d, total_vm, RLIMIT_AS)
++#define vx_acc_vmlpage(m,d) \
++ vx_acc_page(m, d, locked_vm, RLIMIT_MEMLOCK)
++#define vx_acc_file_rsspage(m,d) \
++ vx_acc_page_atomic(m, d, _file_rss, VLIMIT_MAPPED)
++#define vx_acc_anon_rsspage(m,d) \
++ vx_acc_page_atomic(m, d, _anon_rss, VLIMIT_ANON)
++
++#define vx_acc_vmpages(m,p) \
++ vx_acc_pages(m, p, total_vm, RLIMIT_AS)
++#define vx_acc_vmlpages(m,p) \
++ vx_acc_pages(m, p, locked_vm, RLIMIT_MEMLOCK)
++#define vx_acc_file_rsspages(m,p) \
++ vx_acc_pages_atomic(m, p, _file_rss, VLIMIT_MAPPED)
++#define vx_acc_anon_rsspages(m,p) \
++ vx_acc_pages_atomic(m, p, _anon_rss, VLIMIT_ANON)
++
++#define vx_pages_add(s,r,p) __vx_add_cres(s, r, p, 0, __FILE__, __LINE__)
++#define vx_pages_sub(s,r,p) vx_pages_add(s, r, -(p))
++
++#define vx_vmpages_inc(m) vx_acc_vmpage(m, 1)
++#define vx_vmpages_dec(m) vx_acc_vmpage(m,-1)
++#define vx_vmpages_add(m,p) vx_acc_vmpages(m, p)
++#define vx_vmpages_sub(m,p) vx_acc_vmpages(m,-(p))
++
++#define vx_vmlocked_inc(m) vx_acc_vmlpage(m, 1)
++#define vx_vmlocked_dec(m) vx_acc_vmlpage(m,-1)
++#define vx_vmlocked_add(m,p) vx_acc_vmlpages(m, p)
++#define vx_vmlocked_sub(m,p) vx_acc_vmlpages(m,-(p))
++
++#define vx_file_rsspages_inc(m) vx_acc_file_rsspage(m, 1)
++#define vx_file_rsspages_dec(m) vx_acc_file_rsspage(m,-1)
++#define vx_file_rsspages_add(m,p) vx_acc_file_rsspages(m, p)
++#define vx_file_rsspages_sub(m,p) vx_acc_file_rsspages(m,-(p))
++
++#define vx_anon_rsspages_inc(m) vx_acc_anon_rsspage(m, 1)
++#define vx_anon_rsspages_dec(m) vx_acc_anon_rsspage(m,-1)
++#define vx_anon_rsspages_add(m,p) vx_acc_anon_rsspages(m, p)
++#define vx_anon_rsspages_sub(m,p) vx_acc_anon_rsspages(m,-(p))
++
++
++#define vx_pages_avail(m,p,r) \
++ __vx_cres_avail((m)->mm_vx_info, r, p, __FILE__, __LINE__)
++
++#define vx_vmpages_avail(m,p) vx_pages_avail(m, p, RLIMIT_AS)
++#define vx_vmlocked_avail(m,p) vx_pages_avail(m, p, RLIMIT_MEMLOCK)
++#define vx_anon_avail(m,p) vx_pages_avail(m, p, VLIMIT_ANON)
++#define vx_mapped_avail(m,p) vx_pages_avail(m, p, VLIMIT_MAPPED)
++
++#define vx_rss_avail(m,p) \
++ __vx_cres_array_avail((m)->mm_vx_info, VLA_RSS, p, __FILE__, __LINE__)
++
++
++enum {
++ VXPT_UNKNOWN = 0,
++ VXPT_ANON,
++ VXPT_NONE,
++ VXPT_FILE,
++ VXPT_SWAP,
++ VXPT_WRITE
++};
++
++#if 0
++#define vx_page_fault(mm,vma,type,ret)
++#else
++
++static inline
++void __vx_page_fault(struct mm_struct *mm,
++ struct vm_area_struct *vma, int type, int ret)
++{
++ struct vx_info *vxi = mm->mm_vx_info;
++ int what;
++/*
++ static char *page_type[6] =
++ { "UNKNOWN", "ANON","NONE", "FILE", "SWAP", "WRITE" };
++ static char *page_what[4] =
++ { "FAULT_OOM", "FAULT_SIGBUS", "FAULT_MINOR", "FAULT_MAJOR" };
++*/
++
++ if (!vxi)
++ return;
++
++ what = (ret & 0x3);
++
++/* printk("[%d] page[%d][%d] %2x %s %s\n", vxi->vx_id,
++ type, what, ret, page_type[type], page_what[what]);
++*/
++ if (ret & VM_FAULT_WRITE)
++ what |= 0x4;
++ atomic_inc(&vxi->cacct.page[type][what]);
++}
++
++#define vx_page_fault(mm,vma,type,ret) __vx_page_fault(mm,vma,type,ret)
++#endif
++
++
++extern unsigned long vx_badness(struct task_struct *task, struct mm_struct *mm);
++
++#else
++#warning duplicate inclusion
++#endif
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vs_network.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_network.h
+--- linux-2.6.20.4/include/linux/vs_network.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_network.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,183 @@
++#ifndef _NX_VS_NETWORK_H
++#define _NX_VS_NETWORK_H
++
++#include "vserver/context.h"
++#include "vserver/network.h"
++#include "vserver/base.h"
++#include "vserver/debug.h"
++
++
++#define get_nx_info(i) __get_nx_info(i,__FILE__,__LINE__)
++
++static inline struct nx_info *__get_nx_info(struct nx_info *nxi,
++ const char *_file, int _line)
++{
++ if (!nxi)
++ return NULL;
++
++ vxlprintk(VXD_CBIT(nid, 2), "get_nx_info(%p[#%d.%d])",
++ nxi, nxi?nxi->nx_id:0, nxi?atomic_read(&nxi->nx_usecnt):0,
++ _file, _line);
++
++ atomic_inc(&nxi->nx_usecnt);
++ return nxi;
++}
++
++
++extern void free_nx_info(struct nx_info *);
++
++#define put_nx_info(i) __put_nx_info(i,__FILE__,__LINE__)
++
++static inline void __put_nx_info(struct nx_info *nxi, const char *_file, int _line)
++{
++ if (!nxi)
++ return;
++
++ vxlprintk(VXD_CBIT(nid, 2), "put_nx_info(%p[#%d.%d])",
++ nxi, nxi?nxi->nx_id:0, nxi?atomic_read(&nxi->nx_usecnt):0,
++ _file, _line);
++
++ if (atomic_dec_and_test(&nxi->nx_usecnt))
++ free_nx_info(nxi);
++}
++
++
++#define init_nx_info(p,i) __init_nx_info(p,i,__FILE__,__LINE__)
++
++static inline void __init_nx_info(struct nx_info **nxp, struct nx_info *nxi,
++ const char *_file, int _line)
++{
++ if (nxi) {
++ vxlprintk(VXD_CBIT(nid, 3),
++ "init_nx_info(%p[#%d.%d])",
++ nxi, nxi?nxi->nx_id:0,
++ nxi?atomic_read(&nxi->nx_usecnt):0,
++ _file, _line);
++
++ atomic_inc(&nxi->nx_usecnt);
++ }
++ *nxp = nxi;
++}
++
++
++#define set_nx_info(p,i) __set_nx_info(p,i,__FILE__,__LINE__)
++
++static inline void __set_nx_info(struct nx_info **nxp, struct nx_info *nxi,
++ const char *_file, int _line)
++{
++ struct nx_info *nxo;
++
++ if (!nxi)
++ return;
++
++ vxlprintk(VXD_CBIT(nid, 3), "set_nx_info(%p[#%d.%d])",
++ nxi, nxi?nxi->nx_id:0,
++ nxi?atomic_read(&nxi->nx_usecnt):0,
++ _file, _line);
++
++ atomic_inc(&nxi->nx_usecnt);
++ nxo = xchg(nxp, nxi);
++ BUG_ON(nxo);
++}
++
++#define clr_nx_info(p) __clr_nx_info(p,__FILE__,__LINE__)
++
++static inline void __clr_nx_info(struct nx_info **nxp,
++ const char *_file, int _line)
++{
++ struct nx_info *nxo;
++
++ nxo = xchg(nxp, NULL);
++ if (!nxo)
++ return;
++
++ vxlprintk(VXD_CBIT(nid, 3), "clr_nx_info(%p[#%d.%d])",
++ nxo, nxo?nxo->nx_id:0,
++ nxo?atomic_read(&nxo->nx_usecnt):0,
++ _file, _line);
++
++ if (atomic_dec_and_test(&nxo->nx_usecnt))
++ free_nx_info(nxo);
++}
++
++
++#define claim_nx_info(v,p) __claim_nx_info(v,p,__FILE__,__LINE__)
++
++static inline void __claim_nx_info(struct nx_info *nxi,
++ struct task_struct *task, const char *_file, int _line)
++{
++ vxlprintk(VXD_CBIT(nid, 3), "claim_nx_info(%p[#%d.%d.%d]) %p",
++ nxi, nxi?nxi->nx_id:0,
++ nxi?atomic_read(&nxi->nx_usecnt):0,
++ nxi?atomic_read(&nxi->nx_tasks):0,
++ task, _file, _line);
++
++ atomic_inc(&nxi->nx_tasks);
++}
++
++
++extern void unhash_nx_info(struct nx_info *);
++
++#define release_nx_info(v,p) __release_nx_info(v,p,__FILE__,__LINE__)
++
++static inline void __release_nx_info(struct nx_info *nxi,
++ struct task_struct *task, const char *_file, int _line)
++{
++ vxlprintk(VXD_CBIT(nid, 3), "release_nx_info(%p[#%d.%d.%d]) %p",
++ nxi, nxi?nxi->nx_id:0,
++ nxi?atomic_read(&nxi->nx_usecnt):0,
++ nxi?atomic_read(&nxi->nx_tasks):0,
++ task, _file, _line);
++
++ might_sleep();
++
++ if (atomic_dec_and_test(&nxi->nx_tasks))
++ unhash_nx_info(nxi);
++}
++
++
++#define task_get_nx_info(i) __task_get_nx_info(i,__FILE__,__LINE__)
++
++static __inline__ struct nx_info *__task_get_nx_info(struct task_struct *p,
++ const char *_file, int _line)
++{
++ struct nx_info *nxi;
++
++ task_lock(p);
++ vxlprintk(VXD_CBIT(nid, 5), "task_get_nx_info(%p)",
++ p, _file, _line);
++ nxi = __get_nx_info(p->nx_info, _file, _line);
++ task_unlock(p);
++ return nxi;
++}
++
++
++
++
++static inline int addr_in_nx_info(struct nx_info *nxi, uint32_t addr)
++{
++ int n,i;
++
++ if (!nxi)
++ return 1;
++
++ n = nxi->nbipv4;
++ if (n && (nxi->ipv4[0] == 0))
++ return 1;
++ for (i=0; i<n; i++) {
++ if (nxi->ipv4[i] == addr)
++ return 1;
++ }
++ return 0;
++}
++
++static inline void exit_nx_info(struct task_struct *p)
++{
++ if (p->nx_info)
++ release_nx_info(p->nx_info, p);
++}
++
++
++#else
++#warning duplicate inclusion
++#endif
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vs_pid.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_pid.h
+--- linux-2.6.20.4/include/linux/vs_pid.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_pid.h 2007-03-25 00:57:25 +0100
+@@ -0,0 +1,133 @@
++#ifndef _VS_PID_H
++#define _VS_PID_H
++
++#include "vserver/base.h"
++#include "vserver/context.h"
++#include "vserver/debug.h"
++#include <linux/pid_namespace.h>
++
++
++/* pid faking stuff */
++
++
++#define vx_info_map_pid(v,p) \
++ __vx_info_map_pid((v), (p), __FUNC__, __FILE__, __LINE__)
++#define vx_info_map_tgid(v,p) vx_info_map_pid(v,p)
++#define vx_map_pid(p) vx_info_map_pid(current->vx_info, p)
++#define vx_map_tgid(p) vx_map_pid(p)
++
++static inline int __vx_info_map_pid(struct vx_info *vxi, int pid,
++ const char *func, const char *file, int line)
++{
++ if (vx_info_flags(vxi, VXF_INFO_INIT, 0)) {
++ vxfprintk(VXD_CBIT(cvirt, 2),
++ "vx_map_tgid: %p/%llx: %d -> %d",
++ vxi, (long long)vxi->vx_flags, pid,
++ (pid && pid == vxi->vx_initpid)?1:pid,
++ func, file, line);
++ if (pid == 0)
++ return 0;
++ if (pid == vxi->vx_initpid)
++ return 1;
++ }
++ return pid;
++}
++
++#define vx_info_rmap_pid(v,p) \
++ __vx_info_rmap_pid((v), (p), __FUNC__, __FILE__, __LINE__)
++#define vx_rmap_pid(p) vx_info_rmap_pid(current->vx_info, p)
++#define vx_rmap_tgid(p) vx_rmap_pid(p)
++
++static inline int __vx_info_rmap_pid(struct vx_info *vxi, int pid,
++ const char *func, const char *file, int line)
++{
++ if (vx_info_flags(vxi, VXF_INFO_INIT, 0)) {
++ vxfprintk(VXD_CBIT(cvirt, 2),
++ "vx_rmap_tgid: %p/%llx: %d -> %d",
++ vxi, (long long)vxi->vx_flags, pid,
++ (pid == 1)?vxi->vx_initpid:pid,
++ func, file, line);
++ if ((pid == 1) && vxi->vx_initpid)
++ return vxi->vx_initpid;
++ if (pid == vxi->vx_initpid)
++ return ~0U;
++ }
++ return pid;
++}
++
++
++#define VXF_FAKE_INIT (VXF_INFO_INIT|VXF_STATE_INIT)
++
++static inline
++int vx_proc_task_visible(struct task_struct *task)
++{
++ if ((task->pid == 1) &&
++ !vx_flags(VXF_FAKE_INIT, VXF_FAKE_INIT))
++ /* show a blend through init */
++ goto visible;
++ if (vx_check(vx_task_xid(task), VS_WATCH|VS_IDENT))
++ goto visible;
++ return 0;
++visible:
++ return 1;
++}
++
++static inline
++struct task_struct *vx_find_proc_task_by_pid(int pid)
++{
++ struct task_struct *task = find_task_by_real_pid(pid);
++
++ if (task && !vx_proc_task_visible(task)) {
++ vxdprintk(VXD_CBIT(misc, 6),
++ "dropping task (find) %p[#%u,%u] for %p[#%u,%u]",
++ task, task->xid, task->pid,
++ current, current->xid, current->pid);
++ task = NULL;
++ }
++ return task;
++}
++
++static inline
++struct task_struct *vx_get_proc_task(struct inode *inode, struct pid *pid)
++{
++ struct task_struct *task = get_pid_task(pid, PIDTYPE_PID);
++
++ if (task && !vx_proc_task_visible(task)) {
++ vxdprintk(VXD_CBIT(misc, 6),
++ "dropping task (get) %p[#%u,%u] for %p[#%u,%u]",
++ task, task->xid, task->pid,
++ current, current->xid, current->pid);
++ put_task_struct(task);
++ task = NULL;
++ }
++ return task;
++}
++
++
++static inline
++struct task_struct *vx_child_reaper(struct task_struct *p)
++{
++ struct vx_info *vxi = p->vx_info;
++ struct task_struct *reaper = child_reaper(p);
++
++ if (!vxi)
++ goto out;
++
++ BUG_ON(!p->vx_info->vx_reaper);
++
++ /* child reaper for the guest reaper */
++ if (vxi->vx_reaper == p)
++ goto out;
++
++ reaper = vxi->vx_reaper;
++out:
++ vxdprintk(VXD_CBIT(xid, 7),
++ "vx_child_reaper(%p[#%u,%u]) = %p[#%u,%u]",
++ p, p->xid, p->pid, reaper, reaper->xid, reaper->pid);
++ return reaper;
++}
++
++
++#else
++#warning duplicate inclusion
++#endif
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vs_sched.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_sched.h
+--- linux-2.6.20.4/include/linux/vs_sched.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_sched.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,110 @@
++#ifndef _VS_SCHED_H
++#define _VS_SCHED_H
++
++#include "vserver/base.h"
++#include "vserver/context.h"
++#include "vserver/sched.h"
++
++
++#define VAVAVOOM_RATIO 50
++
++#define MAX_PRIO_BIAS 20
++#define MIN_PRIO_BIAS -20
++
++
++#ifdef CONFIG_VSERVER_HARDCPU
++
++/*
++ * effective_prio - return the priority that is based on the static
++ * priority but is modified by bonuses/penalties.
++ *
++ * We scale the actual sleep average [0 .... MAX_SLEEP_AVG]
++ * into a -4 ... 0 ... +4 bonus/penalty range.
++ *
++ * Additionally, we scale another amount based on the number of
++ * CPU tokens currently held by the context, if the process is
++ * part of a context (and the appropriate SCHED flag is set).
++ * This ranges from -5 ... 0 ... +15, quadratically.
++ *
++ * So, the total bonus is -9 .. 0 .. +19
++ * We use ~50% of the full 0...39 priority range so that:
++ *
++ * 1) nice +19 interactive tasks do not preempt nice 0 CPU hogs.
++ * 2) nice -20 CPU hogs do not get preempted by nice 0 tasks.
++ * unless that context is far exceeding its CPU allocation.
++ *
++ * Both properties are important to certain workloads.
++ */
++static inline
++int vx_effective_vavavoom(struct _vx_sched_pc *sched_pc, int max_prio)
++{
++ int vavavoom, max;
++
++ /* lots of tokens = lots of vavavoom
++ * no tokens = no vavavoom */
++ if ((vavavoom = sched_pc->tokens) >= 0) {
++ max = sched_pc->tokens_max;
++ vavavoom = max - vavavoom;
++ max = max * max;
++ vavavoom = max_prio * VAVAVOOM_RATIO / 100
++ * (vavavoom*vavavoom - (max >> 2)) / max;
++ return vavavoom;
++ }
++ return 0;
++}
++
++
++static inline
++int vx_adjust_prio(struct task_struct *p, int prio, int max_user)
++{
++ struct vx_info *vxi = p->vx_info;
++ struct _vx_sched_pc *sched_pc;
++
++ if (!vxi)
++ return prio;
++
++ sched_pc = &vx_cpu(vxi, sched_pc);
++ if (vx_info_flags(vxi, VXF_SCHED_PRIO, 0)) {
++ int vavavoom = vx_effective_vavavoom(sched_pc, max_user);
++
++ sched_pc->vavavoom = vavavoom;
++ prio += vavavoom;
++ }
++ prio += sched_pc->prio_bias;
++ return prio;
++}
++
++#else /* !CONFIG_VSERVER_HARDCPU */
++
++static inline
++int vx_adjust_prio(struct task_struct *p, int prio, int max_user)
++{
++ struct vx_info *vxi = p->vx_info;
++
++ if (vxi)
++ prio += vx_cpu(vxi, sched_pc).prio_bias;
++ return prio;
++}
++
++#endif /* CONFIG_VSERVER_HARDCPU */
++
++
++static inline void vx_account_user(struct vx_info *vxi,
++ cputime_t cputime, int nice)
++{
++ if (!vxi)
++ return;
++ vx_cpu(vxi, sched_pc).user_ticks += cputime;
++}
++
++static inline void vx_account_system(struct vx_info *vxi,
++ cputime_t cputime, int idle)
++{
++ if (!vxi)
++ return;
++ vx_cpu(vxi, sched_pc).sys_ticks += cputime;
++}
++
++#else
++#warning duplicate inclusion
++#endif
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vs_socket.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_socket.h
+--- linux-2.6.20.4/include/linux/vs_socket.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_socket.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,67 @@
++#ifndef _VS_SOCKET_H
++#define _VS_SOCKET_H
++
++#include "vserver/debug.h"
++#include "vserver/base.h"
++#include "vserver/cacct.h"
++#include "vserver/context.h"
++
++
++/* socket accounting */
++
++#include <linux/socket.h>
++
++static inline int vx_sock_type(int family)
++{
++ switch (family) {
++ case PF_UNSPEC:
++ return VXA_SOCK_UNSPEC;
++ case PF_UNIX:
++ return VXA_SOCK_UNIX;
++ case PF_INET:
++ return VXA_SOCK_INET;
++ case PF_INET6:
++ return VXA_SOCK_INET6;
++ case PF_PACKET:
++ return VXA_SOCK_PACKET;
++ default:
++ return VXA_SOCK_OTHER;
++ }
++}
++
++#define vx_acc_sock(v,f,p,s) \
++ __vx_acc_sock((v), (f), (p), (s), __FILE__, __LINE__)
++
++static inline void __vx_acc_sock(struct vx_info *vxi,
++ int family, int pos, int size, char *file, int line)
++{
++ if (vxi) {
++ int type = vx_sock_type(family);
++
++ atomic_long_inc(&vxi->cacct.sock[type][pos].count);
++ atomic_long_add(size, &vxi->cacct.sock[type][pos].total);
++ }
++}
++
++#define vx_sock_recv(sk,s) \
++ vx_acc_sock((sk)->sk_vx_info, (sk)->sk_family, 0, (s))
++#define vx_sock_send(sk,s) \
++ vx_acc_sock((sk)->sk_vx_info, (sk)->sk_family, 1, (s))
++#define vx_sock_fail(sk,s) \
++ vx_acc_sock((sk)->sk_vx_info, (sk)->sk_family, 2, (s))
++
++
++#define sock_vx_init(s) do { \
++ (s)->sk_xid = 0; \
++ (s)->sk_vx_info = NULL; \
++ } while (0)
++
++#define sock_nx_init(s) do { \
++ (s)->sk_nid = 0; \
++ (s)->sk_nx_info = NULL; \
++ } while (0)
++
++
++#else
++#warning duplicate inclusion
++#endif
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vs_tag.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_tag.h
+--- linux-2.6.20.4/include/linux/vs_tag.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_tag.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,44 @@
++#ifndef _VS_TAG_H
++#define _VS_TAG_H
++
++#include <linux/vserver/tag.h>
++
++/* check conditions */
++
++#define DX_ADMIN 0x0001
++#define DX_WATCH 0x0002
++#define DX_HOSTID 0x0008
++
++#define DX_IDENT 0x0010
++
++#define DX_ARG_MASK 0x0010
++
++
++#define dx_task_tag(t) ((t)->xid)
++
++#define dx_current_tag() dx_task_tag(current)
++
++#define dx_check(c,m) __dx_check(dx_current_tag(),c,m)
++
++#define dx_weak_check(c,m) ((m) ? dx_check(c,m) : 1)
++
++
++/*
++ * check current context for ADMIN/WATCH and
++ * optionally against supplied argument
++ */
++static inline int __dx_check(tag_t cid, tag_t id, unsigned int mode)
++{
++ if (mode & DX_ARG_MASK) {
++ if ((mode & DX_IDENT) &&
++ (id == cid))
++ return 1;
++ }
++ return (((mode & DX_ADMIN) && (cid == 0)) ||
++ ((mode & DX_WATCH) && (cid == 1)) ||
++ ((mode & DX_HOSTID) && (id == 0)));
++}
++
++#else
++#warning duplicate inclusion
++#endif
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vs_time.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_time.h
+--- linux-2.6.20.4/include/linux/vs_time.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vs_time.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,19 @@
++#ifndef _VS_TIME_H
++#define _VS_TIME_H
++
++
++/* time faking stuff */
++
++#ifdef CONFIG_VSERVER_VTIME
++
++extern void vx_gettimeofday(struct timeval *tv);
++extern int vx_settimeofday(struct timespec *ts);
++
++#else
++#define vx_gettimeofday(t) do_gettimeofday(t)
++#define vx_settimeofday(t) do_settimeofday(t)
++#endif
++
++#else
++#warning duplicate inclusion
++#endif
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/Kbuild linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/Kbuild
+--- linux-2.6.20.4/include/linux/vserver/Kbuild 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/Kbuild 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,9 @@
++
++unifdef-y += context_cmd.h network_cmd.h space_cmd.h \
++ cacct_cmd.h cvirt_cmd.h limit_cmd.h dlimit_cmd.h \
++ inode_cmd.h sched_cmd.h signal_cmd.h debug_cmd.h
++
++unifdef-y += switch.h network.h monitor.h inode.h
++
++unifdef-y += legacy.h
++
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/base.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/base.h
+--- linux-2.6.20.4/include/linux/vserver/base.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/base.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,237 @@
++#ifndef _VX_BASE_H
++#define _VX_BASE_H
++
++
++/* context state changes */
++
++enum {
++ VSC_STARTUP = 1,
++ VSC_SHUTDOWN,
++
++ VSC_NETUP,
++ VSC_NETDOWN,
++};
++
++
++#define MAX_S_CONTEXT 65535 /* Arbitrary limit */
++
++#ifdef CONFIG_VSERVER_DYNAMIC_IDS
++#define MIN_D_CONTEXT 49152 /* dynamic contexts start here */
++#else
++#define MIN_D_CONTEXT 65536
++#endif
++
++/* check conditions */
++
++#define VS_ADMIN 0x0001
++#define VS_WATCH 0x0002
++#define VS_HIDE 0x0004
++#define VS_HOSTID 0x0008
++
++#define VS_IDENT 0x0010
++#define VS_EQUIV 0x0020
++#define VS_PARENT 0x0040
++#define VS_CHILD 0x0080
++
++#define VS_ARG_MASK 0x00F0
++
++#define VS_DYNAMIC 0x0100
++#define VS_STATIC 0x0200
++
++#define VS_ATR_MASK 0x0F00
++
++#ifdef CONFIG_VSERVER_PRIVACY
++#define VS_ADMIN_P (0)
++#define VS_WATCH_P (0)
++#else
++#define VS_ADMIN_P VS_ADMIN
++#define VS_WATCH_P VS_WATCH
++#endif
++
++#define VS_HARDIRQ 0x1000
++#define VS_SOFTIRQ 0x2000
++#define VS_IRQ 0x4000
++
++#define VS_IRQ_MASK 0xF000
++
++#include <linux/hardirq.h>
++
++/*
++ * check current context for ADMIN/WATCH and
++ * optionally against supplied argument
++ */
++static inline int __vs_check(int cid, int id, unsigned int mode)
++{
++ if (mode & VS_ARG_MASK) {
++ if ((mode & VS_IDENT) &&
++ (id == cid))
++ return 1;
++ }
++ if (mode & VS_ATR_MASK) {
++ if ((mode & VS_DYNAMIC) &&
++ (id >= MIN_D_CONTEXT) &&
++ (id <= MAX_S_CONTEXT))
++ return 1;
++ if ((mode & VS_STATIC) &&
++ (id > 1) && (id < MIN_D_CONTEXT))
++ return 1;
++ }
++ if (mode & VS_IRQ_MASK) {
++ if ((mode & VS_IRQ) && unlikely(in_interrupt()))
++ return 1;
++ if ((mode & VS_HARDIRQ) && unlikely(in_irq()))
++ return 1;
++ if ((mode & VS_SOFTIRQ) && unlikely(in_softirq()))
++ return 1;
++ }
++ return (((mode & VS_ADMIN) && (cid == 0)) ||
++ ((mode & VS_WATCH) && (cid == 1)) ||
++ ((mode & VS_HOSTID) && (id == 0)));
++}
++
++#define vx_task_xid(t) ((t)->xid)
++
++#define vx_current_xid() vx_task_xid(current)
++
++#define current_vx_info() (current->vx_info)
++
++
++#define vx_check(c,m) __vs_check(vx_current_xid(),c,(m)|VS_IRQ)
++
++#define vx_weak_check(c,m) ((m) ? vx_check(c,m) : 1)
++
++
++#define nx_task_nid(t) ((t)->nid)
++
++#define nx_current_nid() nx_task_nid(current)
++
++#define current_nx_info() (current->nx_info)
++
++
++#define nx_check(c,m) __vs_check(nx_current_nid(),c,m)
++
++#define nx_weak_check(c,m) ((m) ? nx_check(c,m) : 1)
++
++
++
++/* generic flag merging */
++
++#define vs_check_flags(v,m,f) (((v) & (m)) ^ (f))
++
++#define vs_mask_flags(v,f,m) (((v) & ~(m)) | ((f) & (m)))
++
++#define vs_mask_mask(v,f,m) (((v) & ~(m)) | ((v) & (f) & (m)))
++
++#define vs_check_bit(v,n) ((v) & (1LL << (n)))
++
++
++/* context flags */
++
++#define __vx_flags(v) ((v) ? (v)->vx_flags : 0)
++
++#define vx_current_flags() __vx_flags(current->vx_info)
++
++#define vx_info_flags(v,m,f) \
++ vs_check_flags(__vx_flags(v),(m),(f))
++
++#define task_vx_flags(t,m,f) \
++ ((t) && vx_info_flags((t)->vx_info, (m), (f)))
++
++#define vx_flags(m,f) vx_info_flags(current->vx_info,(m),(f))
++
++
++/* context caps */
++
++#define __vx_ccaps(v) ((v) ? (v)->vx_ccaps : 0)
++
++#define vx_current_ccaps() __vx_ccaps(current->vx_info)
++
++#define vx_info_ccaps(v,c) (__vx_ccaps(v) & (c))
++
++#define vx_ccaps(c) vx_info_ccaps(current->vx_info,(c))
++
++
++
++/* network flags */
++
++#define __nx_flags(v) ((v) ? (v)->nx_flags : 0)
++
++#define nx_current_flags() __nx_flags(current->nx_info)
++
++#define nx_info_flags(v,m,f) \
++ vs_check_flags(__nx_flags(v),(m),(f))
++
++#define task_nx_flags(t,m,f) \
++ ((t) && nx_info_flags((t)->nx_info, (m), (f)))
++
++#define nx_flags(m,f) nx_info_flags(current->nx_info,(m),(f))
++
++
++/* network caps */
++
++#define __nx_ncaps(v) ((v) ? (v)->nx_ncaps : 0)
++
++#define nx_current_ncaps() __nx_ncaps(current->nx_info)
++
++#define nx_info_ncaps(v,c) (__nx_ncaps(v) & (c))
++
++#define nx_ncaps(c) nx_info_ncaps(current->nx_info,(c))
++
++
++/* context mask capabilities */
++
++#define __vx_mcaps(v) ((v) ? (v)->vx_ccaps >> 32UL : ~0 )
++
++#define vx_info_mcaps(v,c) (__vx_mcaps(v) & (c))
++
++#define vx_mcaps(c) vx_info_mcaps(current->vx_info,(c))
++
++
++/* context bcap mask */
++
++#define __vx_bcaps(v) ((v) ? (v)->vx_bcaps : ~0 )
++
++#define vx_current_bcaps() __vx_bcaps(current->vx_info)
++
++#define vx_info_bcaps(v,c) (__vx_bcaps(v) & (c))
++
++#define vx_bcaps(c) vx_info_bcaps(current->vx_info,(c))
++
++
++#define vx_info_cap_bset(v) ((v) ? (v)->vx_cap_bset : cap_bset)
++
++#define vx_current_cap_bset() vx_info_cap_bset(current->vx_info)
++
++
++#define __vx_info_mbcap(v,b) \
++ (!vx_info_flags(v, VXF_STATE_SETUP, 0) ? \
++ vx_info_bcaps(v, b) : (b))
++
++#define vx_info_mbcap(v,b) __vx_info_mbcap(v,cap_t(b))
++
++#define task_vx_mbcap(t,b) \
++ vx_info_mbcap((t)->vx_info, (t)->b)
++
++#define vx_mbcap(b) task_vx_mbcap(current,b)
++
++#define vx_cap_raised(v,c,f) (vx_info_mbcap(v,c) & CAP_TO_MASK(f))
++
++#define vx_capable(b,c) (capable(b) || \
++ (cap_raised(current->cap_effective,b) && vx_ccaps(c)))
++
++
++#define vx_current_initpid(n) \
++ (current->vx_info && \
++ (current->vx_info->vx_initpid == (n)))
++
++
++#define __vx_state(v) ((v) ? ((v)->vx_state) : 0)
++
++#define vx_info_state(v,m) (__vx_state(v) & (m))
++
++
++#define __nx_state(v) ((v) ? ((v)->nx_state) : 0)
++
++#define nx_info_state(v,m) (__nx_state(v) & (m))
++
++#endif
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/cacct.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/cacct.h
+--- linux-2.6.20.4/include/linux/vserver/cacct.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/cacct.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,15 @@
++#ifndef _VX_CACCT_H
++#define _VX_CACCT_H
++
++
++enum sock_acc_field {
++ VXA_SOCK_UNSPEC = 0,
++ VXA_SOCK_UNIX,
++ VXA_SOCK_INET,
++ VXA_SOCK_INET6,
++ VXA_SOCK_PACKET,
++ VXA_SOCK_OTHER,
++ VXA_SOCK_SIZE /* array size */
++};
++
++#endif /* _VX_CACCT_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/cacct_cmd.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/cacct_cmd.h
+--- linux-2.6.20.4/include/linux/vserver/cacct_cmd.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/cacct_cmd.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,23 @@
++#ifndef _VX_CACCT_CMD_H
++#define _VX_CACCT_CMD_H
++
++
++/* virtual host info name commands */
++
++#define VCMD_sock_stat VC_CMD(VSTAT, 5, 0)
++
++struct vcmd_sock_stat_v0 {
++ uint32_t field;
++ uint32_t count[3];
++ uint64_t total[3];
++};
++
++
++#ifdef __KERNEL__
++
++#include <linux/compiler.h>
++
++extern int vc_sock_stat(struct vx_info *, void __user *);
++
++#endif /* __KERNEL__ */
++#endif /* _VX_CACCT_CMD_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/cacct_def.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/cacct_def.h
+--- linux-2.6.20.4/include/linux/vserver/cacct_def.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/cacct_def.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,43 @@
++#ifndef _VX_CACCT_DEF_H
++#define _VX_CACCT_DEF_H
++
++#include <asm/atomic.h>
++#include <linux/vserver/cacct.h>
++
++
++struct _vx_sock_acc {
++ atomic_long_t count;
++ atomic_long_t total;
++};
++
++/* context sub struct */
++
++struct _vx_cacct {
++ struct _vx_sock_acc sock[VXA_SOCK_SIZE][3];
++ atomic_t slab[8];
++ atomic_t page[6][8];
++};
++
++#ifdef CONFIG_VSERVER_DEBUG
++
++static inline void __dump_vx_cacct(struct _vx_cacct *cacct)
++{
++ int i,j;
++
++ printk("\t_vx_cacct:");
++ for (i=0; i<6; i++) {
++ struct _vx_sock_acc *ptr = cacct->sock[i];
++
++ printk("\t [%d] =", i);
++ for (j=0; j<3; j++) {
++ printk(" [%d] = %8lu, %8lu", j,
++ atomic_long_read(&ptr[j].count),
++ atomic_long_read(&ptr[j].total));
++ }
++ printk("\n");
++ }
++}
++
++#endif
++
++#endif /* _VX_CACCT_DEF_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/cacct_int.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/cacct_int.h
+--- linux-2.6.20.4/include/linux/vserver/cacct_int.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/cacct_int.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,21 @@
++#ifndef _VX_CACCT_INT_H
++#define _VX_CACCT_INT_H
++
++
++#ifdef __KERNEL__
++
++static inline
++unsigned long vx_sock_count(struct _vx_cacct *cacct, int type, int pos)
++{
++ return atomic_long_read(&cacct->sock[type][pos].count);
++}
++
++
++static inline
++unsigned long vx_sock_total(struct _vx_cacct *cacct, int type, int pos)
++{
++ return atomic_long_read(&cacct->sock[type][pos].total);
++}
++
++#endif /* __KERNEL__ */
++#endif /* _VX_CACCT_INT_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/context.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/context.h
+--- linux-2.6.20.4/include/linux/vserver/context.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/context.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,172 @@
++#ifndef _VX_CONTEXT_H
++#define _VX_CONTEXT_H
++
++#include <linux/types.h>
++#include <linux/capability.h>
++
++
++#define VX_DYNAMIC_ID ((uint32_t)-1) /* id for dynamic context */
++
++/* context flags */
++
++#define VXF_INFO_SCHED 0x00000002
++#define VXF_INFO_NPROC 0x00000004
++#define VXF_INFO_PRIVATE 0x00000008
++
++#define VXF_INFO_INIT 0x00000010
++#define VXF_INFO_HIDE 0x00000020
++#define VXF_INFO_ULIMIT 0x00000040
++#define VXF_INFO_NSPACE 0x00000080
++
++#define VXF_SCHED_HARD 0x00000100
++#define VXF_SCHED_PRIO 0x00000200
++#define VXF_SCHED_PAUSE 0x00000400
++
++#define VXF_VIRT_MEM 0x00010000
++#define VXF_VIRT_UPTIME 0x00020000
++#define VXF_VIRT_CPU 0x00040000
++#define VXF_VIRT_LOAD 0x00080000
++#define VXF_VIRT_TIME 0x00100000
++
++#define VXF_HIDE_MOUNT 0x01000000
++#define VXF_HIDE_NETIF 0x02000000
++#define VXF_HIDE_VINFO 0x04000000
++
++#define VXF_STATE_SETUP (1ULL<<32)
++#define VXF_STATE_INIT (1ULL<<33)
++#define VXF_STATE_ADMIN (1ULL<<34)
++
++#define VXF_SC_HELPER (1ULL<<36)
++#define VXF_REBOOT_KILL (1ULL<<37)
++#define VXF_PERSISTENT (1ULL<<38)
++
++#define VXF_FORK_RSS (1ULL<<48)
++#define VXF_PROLIFIC (1ULL<<49)
++
++#define VXF_IGNEG_NICE (1ULL<<52)
++
++#define VXF_ONE_TIME (0x0007ULL<<32)
++
++#define VXF_INIT_SET (VXF_STATE_SETUP|VXF_STATE_INIT|VXF_STATE_ADMIN)
++
++
++/* context migration */
++
++#define VXM_SET_INIT 0x00000001
++#define VXM_SET_REAPER 0x00000002
++
++/* context caps */
++
++#define VXC_CAP_MASK 0x00000000
++
++#define VXC_SET_UTSNAME 0x00000001
++#define VXC_SET_RLIMIT 0x00000002
++
++#define VXC_RAW_ICMP 0x00000100
++#define VXC_SYSLOG 0x00001000
++
++#define VXC_SECURE_MOUNT 0x00010000
++#define VXC_SECURE_REMOUNT 0x00020000
++#define VXC_BINARY_MOUNT 0x00040000
++
++#define VXC_QUOTA_CTL 0x00100000
++#define VXC_ADMIN_MAPPER 0x00200000
++#define VXC_ADMIN_CLOOP 0x00400000
++
++
++#ifdef __KERNEL__
++
++#include <linux/list.h>
++#include <linux/spinlock.h>
++#include <linux/rcupdate.h>
++
++#include "limit_def.h"
++#include "sched_def.h"
++#include "cvirt_def.h"
++#include "cacct_def.h"
++
++struct _vx_info_pc {
++ struct _vx_sched_pc sched_pc;
++ struct _vx_cvirt_pc cvirt_pc;
++};
++
++struct vx_info {
++ struct hlist_node vx_hlist; /* linked list of contexts */
++ xid_t vx_id; /* context id */
++ atomic_t vx_usecnt; /* usage count */
++ atomic_t vx_tasks; /* tasks count */
++ struct vx_info *vx_parent; /* parent context */
++ int vx_state; /* context state */
++
++ unsigned long vx_nsmask; /* assignment mask */
++ struct nsproxy *vx_nsproxy; /* private namespace */
++ struct fs_struct *vx_fs; /* private namespace fs */
++
++ uint64_t vx_flags; /* context flags */
++ uint64_t vx_bcaps; /* bounding caps (system) */
++ uint64_t vx_ccaps; /* context caps (vserver) */
++ kernel_cap_t vx_cap_bset; /* the guest's bset */
++
++ struct task_struct *vx_reaper; /* guest reaper process */
++ pid_t vx_initpid; /* PID of guest init */
++
++ struct _vx_limit limit; /* vserver limits */
++ struct _vx_sched sched; /* vserver scheduler */
++ struct _vx_cvirt cvirt; /* virtual/bias stuff */
++ struct _vx_cacct cacct; /* context accounting */
++
++#ifndef CONFIG_SMP
++ struct _vx_info_pc info_pc; /* per cpu data */
++#else
++ struct _vx_info_pc *ptr_pc; /* per cpu array */
++#endif
++
++ wait_queue_head_t vx_wait; /* context exit waitqueue */
++ int reboot_cmd; /* last sys_reboot() cmd */
++ int exit_code; /* last process exit code */
++
++ char vx_name[65]; /* vserver name */
++};
++
++#ifndef CONFIG_SMP
++#define vx_ptr_pc(vxi) (&(vxi)->info_pc)
++#define vx_per_cpu(vxi, v, id) vx_ptr_pc(vxi)->v
++#else
++#define vx_ptr_pc(vxi) ((vxi)->ptr_pc)
++#define vx_per_cpu(vxi, v, id) per_cpu_ptr(vx_ptr_pc(vxi), id)->v
++#endif
++
++#define vx_cpu(vxi, v) vx_per_cpu(vxi, v, smp_processor_id())
++
++
++struct vx_info_save {
++ struct vx_info *vxi;
++ xid_t xid;
++};
++
++
++/* status flags */
++
++#define VXS_HASHED 0x0001
++#define VXS_PAUSED 0x0010
++#define VXS_SHUTDOWN 0x0100
++#define VXS_HELPER 0x1000
++#define VXS_RELEASED 0x8000
++
++
++extern void claim_vx_info(struct vx_info *, struct task_struct *);
++extern void release_vx_info(struct vx_info *, struct task_struct *);
++
++extern struct vx_info *lookup_vx_info(int);
++extern struct vx_info *lookup_or_create_vx_info(int);
++
++extern int get_xid_list(int, unsigned int *, int);
++extern int xid_is_hashed(xid_t);
++
++extern int vx_migrate_task(struct task_struct *, struct vx_info *, int);
++
++extern long vs_state_change(struct vx_info *, unsigned int);
++
++
++#endif /* __KERNEL__ */
++#endif /* _VX_CONTEXT_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/context_cmd.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/context_cmd.h
+--- linux-2.6.20.4/include/linux/vserver/context_cmd.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/context_cmd.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,123 @@
++#ifndef _VX_CONTEXT_CMD_H
++#define _VX_CONTEXT_CMD_H
++
++
++/* vinfo commands */
++
++#define VCMD_task_xid VC_CMD(VINFO, 1, 0)
++
++#ifdef __KERNEL__
++extern int vc_task_xid(uint32_t, void __user *);
++
++#endif /* __KERNEL__ */
++
++#define VCMD_vx_info VC_CMD(VINFO, 5, 0)
++
++struct vcmd_vx_info_v0 {
++ uint32_t xid;
++ uint32_t initpid;
++ /* more to come */
++};
++
++#ifdef __KERNEL__
++extern int vc_vx_info(struct vx_info *, void __user *);
++
++#endif /* __KERNEL__ */
++
++#define VCMD_ctx_stat VC_CMD(VSTAT, 0, 0)
++
++struct vcmd_ctx_stat_v0 {
++ uint32_t usecnt;
++ uint32_t tasks;
++ /* more to come */
++};
++
++#ifdef __KERNEL__
++extern int vc_ctx_stat(struct vx_info *, void __user *);
++
++#endif /* __KERNEL__ */
++
++/* context commands */
++
++#define VCMD_ctx_create_v0 VC_CMD(VPROC, 1, 0)
++#define VCMD_ctx_create VC_CMD(VPROC, 1, 1)
++
++struct vcmd_ctx_create {
++ uint64_t flagword;
++};
++
++#define VCMD_ctx_migrate_v0 VC_CMD(PROCMIG, 1, 0)
++#define VCMD_ctx_migrate VC_CMD(PROCMIG, 1, 1)
++
++struct vcmd_ctx_migrate {
++ uint64_t flagword;
++};
++
++#ifdef __KERNEL__
++extern int vc_ctx_create(uint32_t, void __user *);
++extern int vc_ctx_migrate(struct vx_info *, void __user *);
++
++#endif /* __KERNEL__ */
++
++
++/* flag commands */
++
++#define VCMD_get_cflags VC_CMD(FLAGS, 1, 0)
++#define VCMD_set_cflags VC_CMD(FLAGS, 2, 0)
++
++struct vcmd_ctx_flags_v0 {
++ uint64_t flagword;
++ uint64_t mask;
++};
++
++#ifdef __KERNEL__
++extern int vc_get_cflags(struct vx_info *, void __user *);
++extern int vc_set_cflags(struct vx_info *, void __user *);
++
++#endif /* __KERNEL__ */
++
++
++/* context caps commands */
++
++#define VCMD_get_ccaps_v0 VC_CMD(FLAGS, 3, 0)
++#define VCMD_set_ccaps_v0 VC_CMD(FLAGS, 4, 0)
++
++struct vcmd_ctx_caps_v0 {
++ uint64_t bcaps;
++ uint64_t ccaps;
++ uint64_t cmask;
++};
++
++#define VCMD_get_ccaps VC_CMD(FLAGS, 3, 1)
++#define VCMD_set_ccaps VC_CMD(FLAGS, 4, 1)
++
++struct vcmd_ctx_caps_v1 {
++ uint64_t ccaps;
++ uint64_t cmask;
++};
++
++#ifdef __KERNEL__
++extern int vc_get_ccaps_v0(struct vx_info *, void __user *);
++extern int vc_set_ccaps_v0(struct vx_info *, void __user *);
++extern int vc_get_ccaps(struct vx_info *, void __user *);
++extern int vc_set_ccaps(struct vx_info *, void __user *);
++
++#endif /* __KERNEL__ */
++
++
++/* bcaps commands */
++
++#define VCMD_get_bcaps VC_CMD(FLAGS, 9, 0)
++#define VCMD_set_bcaps VC_CMD(FLAGS,10, 0)
++
++struct vcmd_bcaps {
++ uint64_t bcaps;
++ uint64_t bmask;
++};
++
++#ifdef __KERNEL__
++extern int vc_get_bcaps(struct vx_info *, void __user *);
++extern int vc_set_bcaps(struct vx_info *, void __user *);
++
++#endif /* __KERNEL__ */
++#endif /* _VX_CONTEXT_CMD_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/cvirt.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/cvirt.h
+--- linux-2.6.20.4/include/linux/vserver/cvirt.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/cvirt.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,20 @@
++#ifndef _VX_CVIRT_H
++#define _VX_CVIRT_H
++
++
++#ifdef __KERNEL__
++
++struct timespec;
++
++void vx_vsi_uptime(struct timespec *, struct timespec *);
++
++
++struct vx_info;
++
++void vx_update_load(struct vx_info *);
++
++
++int vx_do_syslog(int, char __user *, int);
++
++#endif /* __KERNEL__ */
++#endif /* _VX_CVIRT_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/cvirt_cmd.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/cvirt_cmd.h
+--- linux-2.6.20.4/include/linux/vserver/cvirt_cmd.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/cvirt_cmd.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,53 @@
++#ifndef _VX_CVIRT_CMD_H
++#define _VX_CVIRT_CMD_H
++
++
++/* virtual host info name commands */
++
++#define VCMD_set_vhi_name VC_CMD(VHOST, 1, 0)
++#define VCMD_get_vhi_name VC_CMD(VHOST, 2, 0)
++
++struct vcmd_vhi_name_v0 {
++ uint32_t field;
++ char name[65];
++};
++
++
++enum vhi_name_field {
++ VHIN_CONTEXT=0,
++ VHIN_SYSNAME,
++ VHIN_NODENAME,
++ VHIN_RELEASE,
++ VHIN_VERSION,
++ VHIN_MACHINE,
++ VHIN_DOMAINNAME,
++};
++
++
++#ifdef __KERNEL__
++
++#include <linux/compiler.h>
++
++extern int vc_set_vhi_name(struct vx_info *, void __user *);
++extern int vc_get_vhi_name(struct vx_info *, void __user *);
++
++#endif /* __KERNEL__ */
++
++#define VCMD_virt_stat VC_CMD(VSTAT, 3, 0)
++
++struct vcmd_virt_stat_v0 {
++ uint64_t offset;
++ uint64_t uptime;
++ uint32_t nr_threads;
++ uint32_t nr_running;
++ uint32_t nr_uninterruptible;
++ uint32_t nr_onhold;
++ uint32_t nr_forks;
++ uint32_t load[3];
++};
++
++#ifdef __KERNEL__
++extern int vc_virt_stat(struct vx_info *, void __user *);
++
++#endif /* __KERNEL__ */
++#endif /* _VX_CVIRT_CMD_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/cvirt_def.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/cvirt_def.h
+--- linux-2.6.20.4/include/linux/vserver/cvirt_def.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/cvirt_def.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,82 @@
++#ifndef _VX_CVIRT_DEF_H
++#define _VX_CVIRT_DEF_H
++
++#include <linux/jiffies.h>
++#include <linux/spinlock.h>
++#include <linux/wait.h>
++#include <linux/time.h>
++#include <linux/utsname.h>
++#include <asm/atomic.h>
++
++
++struct _vx_usage_stat {
++ uint64_t user;
++ uint64_t nice;
++ uint64_t system;
++ uint64_t softirq;
++ uint64_t irq;
++ uint64_t idle;
++ uint64_t iowait;
++};
++
++struct _vx_syslog {
++ wait_queue_head_t log_wait;
++ spinlock_t logbuf_lock; /* lock for the log buffer */
++
++ unsigned long log_start; /* next char to be read by syslog() */
++ unsigned long con_start; /* next char to be sent to consoles */
++ unsigned long log_end; /* most-recently-written-char + 1 */
++ unsigned long logged_chars; /* #chars since last read+clear operation */
++
++ char log_buf[1024];
++};
++
++
++/* context sub struct */
++
++struct _vx_cvirt {
++// int max_threads; /* maximum allowed threads */
++ atomic_t nr_threads; /* number of current threads */
++ atomic_t nr_running; /* number of running threads */
++ atomic_t nr_uninterruptible; /* number of uninterruptible threads */
++
++ atomic_t nr_onhold; /* processes on hold */
++ uint32_t onhold_last; /* jiffies when put on hold */
++
++ struct timeval bias_tv; /* time offset to the host */
++ struct timespec bias_idle;
++ struct timespec bias_uptime; /* context creation point */
++ uint64_t bias_clock; /* offset in clock_t */
++
++ spinlock_t load_lock; /* lock for the load averages */
++ atomic_t load_updates; /* nr of load updates done so far */
++ uint32_t load_last; /* last time load was calculated */
++ uint32_t load[3]; /* load averages 1,5,15 */
++
++ atomic_t total_forks; /* number of forks so far */
++
++ struct _vx_syslog syslog;
++};
++
++struct _vx_cvirt_pc {
++ struct _vx_usage_stat cpustat;
++};
++
++
++#ifdef CONFIG_VSERVER_DEBUG
++
++static inline void __dump_vx_cvirt(struct _vx_cvirt *cvirt)
++{
++ printk("\t_vx_cvirt:\n");
++ printk("\t threads: %4d, %4d, %4d, %4d\n",
++ atomic_read(&cvirt->nr_threads),
++ atomic_read(&cvirt->nr_running),
++ atomic_read(&cvirt->nr_uninterruptible),
++ atomic_read(&cvirt->nr_onhold));
++ /* add rest here */
++ printk("\t total_forks = %d\n", atomic_read(&cvirt->total_forks));
++}
++
++#endif
++
++#endif /* _VX_CVIRT_DEF_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/debug.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/debug.h
+--- linux-2.6.20.4/include/linux/vserver/debug.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/debug.h 2007-03-10 18:02:51 +0100
+@@ -0,0 +1,117 @@
++#ifndef _VX_DEBUG_H
++#define _VX_DEBUG_H
++
++
++#define VXD_CBIT(n,m) (vx_debug_ ## n & (1 << (m)))
++#define VXD_CMIN(n,m) (vx_debug_ ## n > (m))
++#define VXD_MASK(n,m) (vx_debug_ ## n & (m))
++
++#define VXD_QPOS(v,p) (((uint32_t)(v) >> ((p)*8)) & 0xFF)
++#define VXD_QUAD(v) VXD_QPOS(v,0), VXD_QPOS(v,1), \
++ VXD_QPOS(v,2), VXD_QPOS(v,3)
++#define VXF_QUAD "%u.%u.%u.%u"
++
++#define VXD_DEV(d) (d), (d)->bd_inode->i_ino, \
++ imajor((d)->bd_inode), iminor((d)->bd_inode)
++#define VXF_DEV "%p[%lu,%d:%d]"
++
++
++#define __FUNC__ __func__
++
++
++#define vxd_path(d,m) \
++ ({ static char _buffer[PATH_MAX]; \
++ d_path((d), (m), _buffer, sizeof(_buffer)); })
++
++#define vxd_cond_path(n) \
++ ((n) ? vxd_path((n)->dentry, (n)->mnt) : "<null>" )
++
++
++#ifdef CONFIG_VSERVER_DEBUG
++
++extern unsigned int vx_debug_switch;
++extern unsigned int vx_debug_xid;
++extern unsigned int vx_debug_nid;
++extern unsigned int vx_debug_tag;
++extern unsigned int vx_debug_net;
++extern unsigned int vx_debug_limit;
++extern unsigned int vx_debug_cres;
++extern unsigned int vx_debug_dlim;
++extern unsigned int vx_debug_quota;
++extern unsigned int vx_debug_cvirt;
++extern unsigned int vx_debug_misc;
++
++
++#define VX_LOGLEVEL "vxD: "
++
++#define vxdprintk(c,f,x...) \
++ do { \
++ if (c) \
++ printk(VX_LOGLEVEL f "\n" , ##x); \
++ } while (0)
++
++#define vxlprintk(c,f,x...) \
++ do { \
++ if (c) \
++ printk(VX_LOGLEVEL f " @%s:%d\n", x); \
++ } while (0)
++
++#define vxfprintk(c,f,x...) \
++ do { \
++ if (c) \
++ printk(VX_LOGLEVEL f " %s@%s:%d\n", x); \
++ } while (0)
++
++
++struct vx_info;
++
++void dump_vx_info(struct vx_info *, int);
++void dump_vx_info_inactive(int);
++
++#else /* CONFIG_VSERVER_DEBUG */
++
++#define vx_debug_switch 0
++#define vx_debug_xid 0
++#define vx_debug_nid 0
++#define vx_debug_tag 0
++#define vx_debug_net 0
++#define vx_debug_limit 0
++#define vx_debug_cres 0
++#define vx_debug_dlim 0
++#define vx_debug_cvirt 0
++
++#define vxdprintk(x...) do { } while (0)
++#define vxlprintk(x...) do { } while (0)
++#define vxfprintk(x...) do { } while (0)
++
++#endif /* CONFIG_VSERVER_DEBUG */
++
++
++#ifdef CONFIG_VSERVER_WARN
++
++#define VX_WARNLEVEL KERN_WARNING "vxW: "
++
++#define vxwprintk(c,f,x...) \
++ do { \
++ if (c) \
++ printk(VX_WARNLEVEL f "\n" , ##x); \
++ } while (0)
++
++#else /* CONFIG_VSERVER_WARN */
++
++#define vxwprintk(x...) do { } while (0)
++
++#endif /* CONFIG_VSERVER_WARN */
++
++
++#ifdef CONFIG_VSERVER_DEBUG
++#define vxd_assert_lock(l) assert_spin_locked(l)
++#define vxd_assert(c,f,x...) vxlprintk(!(c), \
++ "assertion [" f "] failed.", ##x, __FILE__, __LINE__)
++#else
++#define vxd_assert_lock(l) do { } while (0)
++#define vxd_assert(c,f,x...) do { } while (0)
++#endif
++
++
++#endif /* _VX_DEBUG_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/debug_cmd.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/debug_cmd.h
+--- linux-2.6.20.4/include/linux/vserver/debug_cmd.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/debug_cmd.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,58 @@
++#ifndef _VX_DEBUG_CMD_H
++#define _VX_DEBUG_CMD_H
++
++
++/* debug commands */
++
++#define VCMD_dump_history VC_CMD(DEBUG, 1, 0)
++
++#define VCMD_read_history VC_CMD(DEBUG, 5, 0)
++#define VCMD_read_monitor VC_CMD(DEBUG, 6, 0)
++
++struct vcmd_read_history_v0 {
++ uint32_t index;
++ uint32_t count;
++ char __user *data;
++};
++
++struct vcmd_read_monitor_v0 {
++ uint32_t index;
++ uint32_t count;
++ char __user *data;
++};
++
++
++#ifdef __KERNEL__
++
++#ifdef CONFIG_COMPAT
++
++#include <asm/compat.h>
++
++struct vcmd_read_history_v0_x32 {
++ uint32_t index;
++ uint32_t count;
++ compat_uptr_t data_ptr;
++};
++
++struct vcmd_read_monitor_v0_x32 {
++ uint32_t index;
++ uint32_t count;
++ compat_uptr_t data_ptr;
++};
++
++#endif /* CONFIG_COMPAT */
++
++extern int vc_dump_history(uint32_t);
++
++extern int vc_read_history(uint32_t, void __user *);
++extern int vc_read_monitor(uint32_t, void __user *);
++
++#ifdef CONFIG_COMPAT
++
++extern int vc_read_history_x32(uint32_t, void __user *);
++extern int vc_read_monitor_x32(uint32_t, void __user *);
++
++#endif /* CONFIG_COMPAT */
++
++#endif /* __KERNEL__ */
++#endif /* _VX_DEBUG_CMD_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/dlimit.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/dlimit.h
+--- linux-2.6.20.4/include/linux/vserver/dlimit.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/dlimit.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,53 @@
++#ifndef _VX_DLIMIT_H
++#define _VX_DLIMIT_H
++
++#include "switch.h"
++
++
++#ifdef __KERNEL__
++
++/* keep in sync with CDLIM_INFINITY */
++
++#define DLIM_INFINITY (~0ULL)
++
++#include <linux/spinlock.h>
++
++struct super_block;
++
++struct dl_info {
++ struct hlist_node dl_hlist; /* linked list of contexts */
++ struct rcu_head dl_rcu; /* the rcu head */
++ tag_t dl_tag; /* context tag */
++ atomic_t dl_usecnt; /* usage count */
++ atomic_t dl_refcnt; /* reference count */
++
++ struct super_block *dl_sb; /* associated superblock */
++
++ spinlock_t dl_lock; /* protect the values */
++
++ unsigned long long dl_space_used; /* used space in bytes */
++ unsigned long long dl_space_total; /* maximum space in bytes */
++ unsigned long dl_inodes_used; /* used inodes */
++ unsigned long dl_inodes_total; /* maximum inodes */
++
++ unsigned int dl_nrlmult; /* non root limit mult */
++};
++
++struct rcu_head;
++
++extern void rcu_free_dl_info(struct rcu_head *);
++extern void unhash_dl_info(struct dl_info *);
++
++extern struct dl_info *locate_dl_info(struct super_block *, tag_t);
++
++
++struct kstatfs;
++
++extern void vx_vsi_statfs(struct super_block *, struct kstatfs *);
++
++typedef uint64_t dlsize_t;
++
++#endif /* __KERNEL__ */
++#else /* _VX_DLIMIT_H */
++#warning duplicate inclusion
++#endif /* _VX_DLIMIT_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/dlimit_cmd.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/dlimit_cmd.h
+--- linux-2.6.20.4/include/linux/vserver/dlimit_cmd.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/dlimit_cmd.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,74 @@
++#ifndef _VX_DLIMIT_CMD_H
++#define _VX_DLIMIT_CMD_H
++
++
++/* dlimit vserver commands */
++
++#define VCMD_add_dlimit VC_CMD(DLIMIT, 1, 0)
++#define VCMD_rem_dlimit VC_CMD(DLIMIT, 2, 0)
++
++#define VCMD_set_dlimit VC_CMD(DLIMIT, 5, 0)
++#define VCMD_get_dlimit VC_CMD(DLIMIT, 6, 0)
++
++struct vcmd_ctx_dlimit_base_v0 {
++ const char __user *name;
++ uint32_t flags;
++};
++
++struct vcmd_ctx_dlimit_v0 {
++ const char __user *name;
++ uint32_t space_used; /* used space in kbytes */
++ uint32_t space_total; /* maximum space in kbytes */
++ uint32_t inodes_used; /* used inodes */
++ uint32_t inodes_total; /* maximum inodes */
++ uint32_t reserved; /* reserved for root in % */
++ uint32_t flags;
++};
++
++#define CDLIM_UNSET ((uint32_t)0UL)
++#define CDLIM_INFINITY ((uint32_t)~0UL)
++#define CDLIM_KEEP ((uint32_t)~1UL)
++
++#ifdef __KERNEL__
++
++#ifdef CONFIG_COMPAT
++
++#include <asm/compat.h>
++
++struct vcmd_ctx_dlimit_base_v0_x32 {
++ compat_uptr_t name_ptr;
++ uint32_t flags;
++};
++
++struct vcmd_ctx_dlimit_v0_x32 {
++ compat_uptr_t name_ptr;
++ uint32_t space_used; /* used space in kbytes */
++ uint32_t space_total; /* maximum space in kbytes */
++ uint32_t inodes_used; /* used inodes */
++ uint32_t inodes_total; /* maximum inodes */
++ uint32_t reserved; /* reserved for root in % */
++ uint32_t flags;
++};
++
++#endif /* CONFIG_COMPAT */
++
++#include <linux/compiler.h>
++
++extern int vc_add_dlimit(uint32_t, void __user *);
++extern int vc_rem_dlimit(uint32_t, void __user *);
++
++extern int vc_set_dlimit(uint32_t, void __user *);
++extern int vc_get_dlimit(uint32_t, void __user *);
++
++#ifdef CONFIG_COMPAT
++
++extern int vc_add_dlimit_x32(uint32_t, void __user *);
++extern int vc_rem_dlimit_x32(uint32_t, void __user *);
++
++extern int vc_set_dlimit_x32(uint32_t, void __user *);
++extern int vc_get_dlimit_x32(uint32_t, void __user *);
++
++#endif /* CONFIG_COMPAT */
++
++#endif /* __KERNEL__ */
++#endif /* _VX_DLIMIT_CMD_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/global.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/global.h
+--- linux-2.6.20.4/include/linux/vserver/global.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/global.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,18 @@
++#ifndef _VX_GLOBAL_H
++#define _VX_GLOBAL_H
++
++
++extern atomic_t vx_global_ctotal;
++extern atomic_t vx_global_cactive;
++
++extern atomic_t nx_global_ctotal;
++extern atomic_t nx_global_cactive;
++
++extern atomic_t vs_global_nsproxy;
++extern atomic_t vs_global_fs;
++extern atomic_t vs_global_mnt_ns;
++extern atomic_t vs_global_uts_ns;
++extern atomic_t vs_global_ipc_ns;
++
++
++#endif /* _VX_GLOBAL_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/history.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/history.h
+--- linux-2.6.20.4/include/linux/vserver/history.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/history.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,197 @@
++#ifndef _VX_HISTORY_H
++#define _VX_HISTORY_H
++
++
++enum {
++ VXH_UNUSED=0,
++ VXH_THROW_OOPS=1,
++
++ VXH_GET_VX_INFO,
++ VXH_PUT_VX_INFO,
++ VXH_INIT_VX_INFO,
++ VXH_SET_VX_INFO,
++ VXH_CLR_VX_INFO,
++ VXH_CLAIM_VX_INFO,
++ VXH_RELEASE_VX_INFO,
++ VXH_ALLOC_VX_INFO,
++ VXH_DEALLOC_VX_INFO,
++ VXH_HASH_VX_INFO,
++ VXH_UNHASH_VX_INFO,
++ VXH_LOC_VX_INFO,
++ VXH_LOOKUP_VX_INFO,
++ VXH_CREATE_VX_INFO,
++};
++
++struct _vxhe_vxi {
++ struct vx_info *ptr;
++ unsigned xid;
++ unsigned usecnt;
++ unsigned tasks;
++};
++
++struct _vxhe_set_clr {
++ void *data;
++};
++
++struct _vxhe_loc_lookup {
++ unsigned arg;
++};
++
++struct _vx_hist_entry {
++ void *loc;
++ unsigned short seq;
++ unsigned short type;
++ struct _vxhe_vxi vxi;
++ union {
++ struct _vxhe_set_clr sc;
++ struct _vxhe_loc_lookup ll;
++ };
++};
++
++#ifdef CONFIG_VSERVER_HISTORY
++
++extern unsigned volatile int vxh_active;
++
++struct _vx_hist_entry *vxh_advance(void *loc);
++
++
++static inline
++void __vxh_copy_vxi(struct _vx_hist_entry *entry, struct vx_info *vxi)
++{
++ entry->vxi.ptr = vxi;
++ if (vxi) {
++ entry->vxi.usecnt = atomic_read(&vxi->vx_usecnt);
++ entry->vxi.tasks = atomic_read(&vxi->vx_tasks);
++ entry->vxi.xid = vxi->vx_id;
++ }
++}
++
++
++#define __HERE__ current_text_addr()
++
++#define __VXH_BODY(__type, __data, __here) \
++ struct _vx_hist_entry *entry; \
++ \
++ preempt_disable(); \
++ entry = vxh_advance(__here); \
++ __data; \
++ entry->type = __type; \
++ preempt_enable();
++
++
++ /* pass vxi only */
++
++#define __VXH_SMPL \
++ __vxh_copy_vxi(entry, vxi)
++
++static inline
++void __vxh_smpl(struct vx_info *vxi, int __type, void *__here)
++{
++ __VXH_BODY(__type, __VXH_SMPL, __here)
++}
++
++ /* pass vxi and data (void *) */
++
++#define __VXH_DATA \
++ __vxh_copy_vxi(entry, vxi); \
++ entry->sc.data = data
++
++static inline
++void __vxh_data(struct vx_info *vxi, void *data,
++ int __type, void *__here)
++{
++ __VXH_BODY(__type, __VXH_DATA, __here)
++}
++
++ /* pass vxi and arg (long) */
++
++#define __VXH_LONG \
++ __vxh_copy_vxi(entry, vxi); \
++ entry->ll.arg = arg
++
++static inline
++void __vxh_long(struct vx_info *vxi, long arg,
++ int __type, void *__here)
++{
++ __VXH_BODY(__type, __VXH_LONG, __here)
++}
++
++
++static inline
++void __vxh_throw_oops(void *__here)
++{
++ __VXH_BODY(VXH_THROW_OOPS, {}, __here);
++ /* prevent further acquisition */
++ vxh_active = 0;
++}
++
++
++#define vxh_throw_oops() __vxh_throw_oops(__HERE__);
++
++#define __vxh_get_vx_info(v,h) __vxh_smpl(v, VXH_GET_VX_INFO, h);
++#define __vxh_put_vx_info(v,h) __vxh_smpl(v, VXH_PUT_VX_INFO, h);
++
++#define __vxh_init_vx_info(v,d,h) \
++ __vxh_data(v,d, VXH_INIT_VX_INFO, h);
++#define __vxh_set_vx_info(v,d,h) \
++ __vxh_data(v,d, VXH_SET_VX_INFO, h);
++#define __vxh_clr_vx_info(v,d,h) \
++ __vxh_data(v,d, VXH_CLR_VX_INFO, h);
++
++#define __vxh_claim_vx_info(v,d,h) \
++ __vxh_data(v,d, VXH_CLAIM_VX_INFO, h);
++#define __vxh_release_vx_info(v,d,h) \
++ __vxh_data(v,d, VXH_RELEASE_VX_INFO, h);
++
++#define vxh_alloc_vx_info(v) \
++ __vxh_smpl(v, VXH_ALLOC_VX_INFO, __HERE__);
++#define vxh_dealloc_vx_info(v) \
++ __vxh_smpl(v, VXH_DEALLOC_VX_INFO, __HERE__);
++
++#define vxh_hash_vx_info(v) \
++ __vxh_smpl(v, VXH_HASH_VX_INFO, __HERE__);
++#define vxh_unhash_vx_info(v) \
++ __vxh_smpl(v, VXH_UNHASH_VX_INFO, __HERE__);
++
++#define vxh_loc_vx_info(v,l) \
++ __vxh_long(v,l, VXH_LOC_VX_INFO, __HERE__);
++#define vxh_lookup_vx_info(v,l) \
++ __vxh_long(v,l, VXH_LOOKUP_VX_INFO, __HERE__);
++#define vxh_create_vx_info(v,l) \
++ __vxh_long(v,l, VXH_CREATE_VX_INFO, __HERE__);
++
++extern void vxh_dump_history(void);
++
++
++#else /* CONFIG_VSERVER_HISTORY */
++
++#define __HERE__ 0
++
++#define vxh_throw_oops() do { } while (0)
++
++#define __vxh_get_vx_info(v,h) do { } while (0)
++#define __vxh_put_vx_info(v,h) do { } while (0)
++
++#define __vxh_init_vx_info(v,d,h) do { } while (0)
++#define __vxh_set_vx_info(v,d,h) do { } while (0)
++#define __vxh_clr_vx_info(v,d,h) do { } while (0)
++
++#define __vxh_claim_vx_info(v,d,h) do { } while (0)
++#define __vxh_release_vx_info(v,d,h) do { } while (0)
++
++#define vxh_alloc_vx_info(v) do { } while (0)
++#define vxh_dealloc_vx_info(v) do { } while (0)
++
++#define vxh_hash_vx_info(v) do { } while (0)
++#define vxh_unhash_vx_info(v) do { } while (0)
++
++#define vxh_loc_vx_info(a,v) do { } while (0)
++#define vxh_lookup_vx_info(a,v) do { } while (0)
++#define vxh_create_vx_info(a,v) do { } while (0)
++
++#define vxh_dump_history() do { } while (0)
++
++
++#endif /* CONFIG_VSERVER_HISTORY */
++
++#endif /* _VX_HISTORY_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/inode.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/inode.h
+--- linux-2.6.20.4/include/linux/vserver/inode.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/inode.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,38 @@
++#ifndef _VX_INODE_H
++#define _VX_INODE_H
++
++
++#define IATTR_TAG 0x01000000
++
++#define IATTR_ADMIN 0x00000001
++#define IATTR_WATCH 0x00000002
++#define IATTR_HIDE 0x00000004
++#define IATTR_FLAGS 0x00000007
++
++#define IATTR_BARRIER 0x00010000
++#define IATTR_IUNLINK 0x00020000
++#define IATTR_IMMUTABLE 0x00040000
++
++#ifdef __KERNEL__
++
++
++#ifdef CONFIG_VSERVER_PROC_SECURE
++#define IATTR_PROC_DEFAULT ( IATTR_ADMIN | IATTR_HIDE )
++#define IATTR_PROC_SYMLINK ( IATTR_ADMIN )
++#else
++#define IATTR_PROC_DEFAULT ( IATTR_ADMIN )
++#define IATTR_PROC_SYMLINK ( IATTR_ADMIN )
++#endif
++
++#define vx_hide_check(c,m) (((m) & IATTR_HIDE) ? vx_check(c,m) : 1)
++
++#endif /* __KERNEL__ */
++
++/* inode ioctls */
++
++#define FIOC_GETXFLG _IOR('x', 5, long)
++#define FIOC_SETXFLG _IOW('x', 6, long)
++
++#else /* _VX_INODE_H */
++#warning duplicate inclusion
++#endif /* _VX_INODE_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/inode_cmd.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/inode_cmd.h
+--- linux-2.6.20.4/include/linux/vserver/inode_cmd.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/inode_cmd.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,61 @@
++#ifndef _VX_INODE_CMD_H
++#define _VX_INODE_CMD_H
++
++
++/* inode vserver commands */
++
++#define VCMD_get_iattr_v0 VC_CMD(INODE, 1, 0)
++#define VCMD_set_iattr_v0 VC_CMD(INODE, 2, 0)
++
++#define VCMD_get_iattr VC_CMD(INODE, 1, 1)
++#define VCMD_set_iattr VC_CMD(INODE, 2, 1)
++
++struct vcmd_ctx_iattr_v0 {
++ /* device handle in id */
++ uint64_t ino;
++ uint32_t xid;
++ uint32_t flags;
++ uint32_t mask;
++};
++
++struct vcmd_ctx_iattr_v1 {
++ const char __user *name;
++ uint32_t xid;
++ uint32_t flags;
++ uint32_t mask;
++};
++
++
++#ifdef __KERNEL__
++
++
++#ifdef CONFIG_COMPAT
++
++#include <asm/compat.h>
++
++struct vcmd_ctx_iattr_v1_x32 {
++ compat_uptr_t name_ptr;
++ uint32_t xid;
++ uint32_t flags;
++ uint32_t mask;
++};
++
++#endif /* CONFIG_COMPAT */
++
++#include <linux/compiler.h>
++
++extern int vc_get_iattr_v0(uint32_t, void __user *);
++extern int vc_set_iattr_v0(uint32_t, void __user *);
++
++extern int vc_get_iattr(uint32_t, void __user *);
++extern int vc_set_iattr(uint32_t, void __user *);
++
++#ifdef CONFIG_COMPAT
++
++extern int vc_get_iattr_x32(uint32_t, void __user *);
++extern int vc_set_iattr_x32(uint32_t, void __user *);
++
++#endif /* CONFIG_COMPAT */
++
++#endif /* __KERNEL__ */
++#endif /* _VX_INODE_CMD_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/legacy.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/legacy.h
+--- linux-2.6.20.4/include/linux/vserver/legacy.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/legacy.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,49 @@
++#ifndef _VX_LEGACY_H
++#define _VX_LEGACY_H
++
++#include "switch.h"
++
++
++/* compatibiliy vserver commands */
++
++#define VCMD_new_s_context VC_CMD(COMPAT, 1, 1)
++#define VCMD_set_ipv4root VC_CMD(COMPAT, 2, 3)
++
++#define VCMD_create_context VC_CMD(VSETUP, 1, 0)
++
++/* compatibiliy vserver arguments */
++
++struct vcmd_new_s_context_v1 {
++ uint32_t remove_cap;
++ uint32_t flags;
++};
++
++struct vcmd_set_ipv4root_v3 {
++ /* number of pairs in id */
++ uint32_t broadcast;
++ struct {
++ uint32_t ip;
++ uint32_t mask;
++ } nx_mask_pair[NB_IPV4ROOT];
++};
++
++
++#define VX_INFO_LOCK 1 /* Can't request a new vx_id */
++#define VX_INFO_NPROC 4 /* Limit number of processes in a context */
++#define VX_INFO_PRIVATE 8 /* Noone can join this security context */
++#define VX_INFO_INIT 16 /* This process wants to become the */
++ /* logical process 1 of the security */
++ /* context */
++#define VX_INFO_HIDEINFO 32 /* Hide some information in /proc */
++#define VX_INFO_ULIMIT 64 /* Use ulimit of the current process */
++ /* to become the global limits */
++ /* of the context */
++#define VX_INFO_NAMESPACE 128 /* save private namespace */
++
++
++#ifdef __KERNEL__
++extern int vc_new_s_context(uint32_t, void __user *);
++extern int vc_set_ipv4root(uint32_t, void __user *);
++
++#endif /* __KERNEL__ */
++#endif /* _VX_LEGACY_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/limit.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/limit.h
+--- linux-2.6.20.4/include/linux/vserver/limit.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/limit.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,68 @@
++#ifndef _VX_LIMIT_H
++#define _VX_LIMIT_H
++
++
++#define VLIMIT_NSOCK 16
++#define VLIMIT_OPENFD 17
++#define VLIMIT_ANON 18
++#define VLIMIT_SHMEM 19
++#define VLIMIT_SEMARY 20
++#define VLIMIT_NSEMS 21
++#define VLIMIT_DENTRY 22
++#define VLIMIT_MAPPED 23
++
++
++#ifdef __KERNEL__
++
++#define VLIM_NOCHECK ((1L << VLIMIT_DENTRY) | (1L << RLIMIT_RSS))
++
++/* keep in sync with CRLIM_INFINITY */
++
++#define VLIM_INFINITY (~0ULL)
++
++#ifndef RLIM_INFINITY
++#warning RLIM_INFINITY is undefined
++#endif
++
++#define __rlim_val(l,r,v) ((l)->res[(r)].v)
++
++#define __rlim_soft(l,r) __rlim_val(l,r,soft)
++#define __rlim_hard(l,r) __rlim_val(l,r,hard)
++
++#define __rlim_rcur(l,r) __rlim_val(l,r,rcur)
++#define __rlim_rmin(l,r) __rlim_val(l,r,rmin)
++#define __rlim_rmax(l,r) __rlim_val(l,r,rmax)
++
++#define __rlim_lhit(l,r) __rlim_val(l,r,lhit)
++#define __rlim_hit(l,r) atomic_inc(&__rlim_lhit(l,r))
++
++typedef atomic_long_t rlim_atomic_t;
++typedef unsigned long rlim_t;
++
++#define __rlim_get(l,r) atomic_long_read(&__rlim_rcur(l,r))
++#define __rlim_set(l,r,v) atomic_long_set(&__rlim_rcur(l,r), v)
++#define __rlim_inc(l,r) atomic_long_inc(&__rlim_rcur(l,r))
++#define __rlim_dec(l,r) atomic_long_dec(&__rlim_rcur(l,r))
++#define __rlim_add(l,r,v) atomic_long_add(v, &__rlim_rcur(l,r))
++#define __rlim_sub(l,r,v) atomic_long_sub(v, &__rlim_rcur(l,r))
++
++
++#if (RLIM_INFINITY == VLIM_INFINITY)
++#define VX_VLIM(r) ((long long)(long)(r))
++#define VX_RLIM(v) ((rlim_t)(v))
++#else
++#define VX_VLIM(r) (((r) == RLIM_INFINITY) \
++ ? VLIM_INFINITY : (long long)(r))
++#define VX_RLIM(v) (((v) == VLIM_INFINITY) \
++ ? RLIM_INFINITY : (rlim_t)(v))
++#endif
++
++struct sysinfo;
++
++void vx_vsi_meminfo(struct sysinfo *);
++void vx_vsi_swapinfo(struct sysinfo *);
++
++#define NUM_LIMITS 24
++
++#endif /* __KERNEL__ */
++#endif /* _VX_LIMIT_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/limit_cmd.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/limit_cmd.h
+--- linux-2.6.20.4/include/linux/vserver/limit_cmd.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/limit_cmd.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,69 @@
++#ifndef _VX_LIMIT_CMD_H
++#define _VX_LIMIT_CMD_H
++
++
++/* rlimit vserver commands */
++
++#define VCMD_get_rlimit VC_CMD(RLIMIT, 1, 0)
++#define VCMD_set_rlimit VC_CMD(RLIMIT, 2, 0)
++#define VCMD_get_rlimit_mask VC_CMD(RLIMIT, 3, 0)
++#define VCMD_reset_minmax VC_CMD(RLIMIT, 9, 0)
++
++struct vcmd_ctx_rlimit_v0 {
++ uint32_t id;
++ uint64_t minimum;
++ uint64_t softlimit;
++ uint64_t maximum;
++};
++
++struct vcmd_ctx_rlimit_mask_v0 {
++ uint32_t minimum;
++ uint32_t softlimit;
++ uint32_t maximum;
++};
++
++#define VCMD_rlimit_stat VC_CMD(VSTAT, 1, 0)
++
++struct vcmd_rlimit_stat_v0 {
++ uint32_t id;
++ uint32_t hits;
++ uint64_t value;
++ uint64_t minimum;
++ uint64_t maximum;
++};
++
++#define CRLIM_UNSET (0ULL)
++#define CRLIM_INFINITY (~0ULL)
++#define CRLIM_KEEP (~1ULL)
++
++#ifdef __KERNEL__
++
++#ifdef CONFIG_IA32_EMULATION
++
++struct vcmd_ctx_rlimit_v0_x32 {
++ uint32_t id;
++ uint64_t minimum;
++ uint64_t softlimit;
++ uint64_t maximum;
++} __attribute__ ((aligned (4)));
++
++#endif /* CONFIG_IA32_EMULATION */
++
++#include <linux/compiler.h>
++
++extern int vc_get_rlimit_mask(uint32_t, void __user *);
++extern int vc_get_rlimit(struct vx_info *, void __user *);
++extern int vc_set_rlimit(struct vx_info *, void __user *);
++extern int vc_reset_minmax(struct vx_info *, void __user *);
++
++extern int vc_rlimit_stat(struct vx_info *, void __user *);
++
++#ifdef CONFIG_IA32_EMULATION
++
++extern int vc_get_rlimit_x32(struct vx_info *, void __user *);
++extern int vc_set_rlimit_x32(struct vx_info *, void __user *);
++
++#endif /* CONFIG_IA32_EMULATION */
++
++#endif /* __KERNEL__ */
++#endif /* _VX_LIMIT_CMD_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/limit_def.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/limit_def.h
+--- linux-2.6.20.4/include/linux/vserver/limit_def.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/limit_def.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,47 @@
++#ifndef _VX_LIMIT_DEF_H
++#define _VX_LIMIT_DEF_H
++
++#include <asm/atomic.h>
++#include <asm/resource.h>
++
++#include "limit.h"
++
++
++struct _vx_res_limit {
++ rlim_t soft; /* Context soft limit */
++ rlim_t hard; /* Context hard limit */
++
++ rlim_atomic_t rcur; /* Current value */
++ rlim_t rmin; /* Context minimum */
++ rlim_t rmax; /* Context maximum */
++
++ atomic_t lhit; /* Limit hits */
++};
++
++/* context sub struct */
++
++struct _vx_limit {
++ struct _vx_res_limit res[NUM_LIMITS];
++};
++
++#ifdef CONFIG_VSERVER_DEBUG
++
++static inline void __dump_vx_limit(struct _vx_limit *limit)
++{
++ int i;
++
++ printk("\t_vx_limit:");
++ for (i=0; i<NUM_LIMITS; i++) {
++ printk("\t [%2d] = %8lu %8lu/%8lu, %8ld/%8ld, %8d\n",
++ i, (unsigned long)__rlim_get(limit, i),
++ (unsigned long)__rlim_rmin(limit, i),
++ (unsigned long)__rlim_rmax(limit, i),
++ (long)__rlim_soft(limit, i),
++ (long)__rlim_hard(limit, i),
++ atomic_read(&__rlim_lhit(limit, i)));
++ }
++}
++
++#endif
++
++#endif /* _VX_LIMIT_DEF_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/limit_int.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/limit_int.h
+--- linux-2.6.20.4/include/linux/vserver/limit_int.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/limit_int.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,198 @@
++#ifndef _VX_LIMIT_INT_H
++#define _VX_LIMIT_INT_H
++
++#include "context.h"
++
++#ifdef __KERNEL__
++
++#define VXD_RCRES_COND(r) VXD_CBIT(cres, (r))
++#define VXD_RLIMIT_COND(r) VXD_CBIT(limit, (r))
++
++extern const char *vlimit_name[NUM_LIMITS];
++
++static inline void __vx_acc_cres(struct vx_info *vxi,
++ int res, int dir, void *_data, char *_file, int _line)
++{
++ if (VXD_RCRES_COND(res))
++ vxlprintk(1, "vx_acc_cres[%5d,%s,%2d]: %5ld%s (%p)",
++ (vxi ? vxi->vx_id : -1), vlimit_name[res], res,
++ (vxi ? (long)__rlim_get(&vxi->limit, res) : 0),
++ (dir > 0) ? "++" : "--", _data, _file, _line);
++ if (!vxi)
++ return;
++
++ if (dir > 0)
++ __rlim_inc(&vxi->limit, res);
++ else
++ __rlim_dec(&vxi->limit, res);
++}
++
++static inline void __vx_add_cres(struct vx_info *vxi,
++ int res, int amount, void *_data, char *_file, int _line)
++{
++ if (VXD_RCRES_COND(res))
++ vxlprintk(1, "vx_add_cres[%5d,%s,%2d]: %5ld += %5d (%p)",
++ (vxi ? vxi->vx_id : -1), vlimit_name[res], res,
++ (vxi ? (long)__rlim_get(&vxi->limit, res) : 0),
++ amount, _data, _file, _line);
++ if (amount == 0)
++ return;
++ if (!vxi)
++ return;
++ __rlim_add(&vxi->limit, res, amount);
++}
++
++static inline
++int __vx_cres_adjust_max(struct _vx_limit *limit, int res, rlim_t value)
++{
++ int cond = (value > __rlim_rmax(limit, res));
++
++ if (cond)
++ __rlim_rmax(limit, res) = value;
++ return cond;
++}
++
++static inline
++int __vx_cres_adjust_min(struct _vx_limit *limit, int res, rlim_t value)
++{
++ int cond = (value < __rlim_rmin(limit, res));
++
++ if (cond)
++ __rlim_rmin(limit, res) = value;
++ return cond;
++}
++
++static inline
++void __vx_cres_fixup(struct _vx_limit *limit, int res, rlim_t value)
++{
++ if (!__vx_cres_adjust_max(limit, res, value))
++ __vx_cres_adjust_min(limit, res, value);
++}
++
++
++/* return values:
++ +1 ... no limit hit
++ -1 ... over soft limit
++ 0 ... over hard limit */
++
++static inline int __vx_cres_avail(struct vx_info *vxi,
++ int res, int num, char *_file, int _line)
++{
++ struct _vx_limit *limit;
++ rlim_t value;
++
++ if (VXD_RLIMIT_COND(res))
++ vxlprintk(1, "vx_cres_avail[%5d,%s,%2d]: %5ld/%5ld > %5ld + %5d",
++ (vxi ? vxi->vx_id : -1), vlimit_name[res], res,
++ (vxi ? (long)__rlim_soft(&vxi->limit, res) : -1),
++ (vxi ? (long)__rlim_hard(&vxi->limit, res) : -1),
++ (vxi ? (long)__rlim_get(&vxi->limit, res) : 0),
++ num, _file, _line);
++ if (!vxi)
++ return 1;
++
++ limit = &vxi->limit;
++ value = __rlim_get(limit, res);
++
++ if (!__vx_cres_adjust_max(limit, res, value))
++ __vx_cres_adjust_min(limit, res, value);
++
++ if (num == 0)
++ return 1;
++
++ if (__rlim_soft(limit, res) == RLIM_INFINITY)
++ return -1;
++ if (value + num <= __rlim_soft(limit, res))
++ return -1;
++
++ if (__rlim_hard(limit, res) == RLIM_INFINITY)
++ return 1;
++ if (value + num <= __rlim_hard(limit, res))
++ return 1;
++
++ __rlim_hit(limit, res);
++ return 0;
++}
++
++
++static const int VLA_RSS[] = { RLIMIT_RSS, VLIMIT_ANON, VLIMIT_MAPPED, 0 };
++
++static inline
++rlim_t __vx_cres_array_sum(struct _vx_limit *limit, const int *array)
++{
++ rlim_t value, sum = 0;
++ int res;
++
++ while ((res = *array++)) {
++ value = __rlim_get(limit, res);
++ __vx_cres_fixup(limit, res, value);
++ sum += value;
++ }
++ return sum;
++}
++
++static inline
++rlim_t __vx_cres_array_fixup(struct _vx_limit *limit, const int *array)
++{
++ rlim_t value = __vx_cres_array_sum(limit, array + 1);
++ int res = *array;
++
++ if (value == __rlim_get(limit, res))
++ return value;
++
++ __rlim_set(limit, res, value);
++ /* now adjust min/max */
++ if (!__vx_cres_adjust_max(limit, res, value))
++ __vx_cres_adjust_min(limit, res, value);
++
++ return value;
++}
++
++static inline int __vx_cres_array_avail(struct vx_info *vxi,
++ const int *array, int num, char *_file, int _line)
++{
++ struct _vx_limit *limit;
++ rlim_t value = 0;
++ int res;
++
++ if (num == 0)
++ return 1;
++ if (!vxi)
++ return 1;
++
++ limit = &vxi->limit;
++ res = *array;
++ value = __vx_cres_array_sum(limit, array+1);
++
++ __rlim_set(limit, res, value);
++ __vx_cres_fixup(limit, res, value);
++
++ return __vx_cres_avail(vxi, res, num, _file, _line);
++}
++
++
++static inline void vx_limit_fixup(struct _vx_limit *limit, int id)
++{
++ rlim_t value;
++ int res;
++
++ /* complex resources first */
++ if ((id < 0) || (id == RLIMIT_RSS))
++ __vx_cres_array_fixup(limit, VLA_RSS);
++
++ for (res=0; res<NUM_LIMITS; res++) {
++ if ((id > 0) && (res != id))
++ continue;
++
++ value = __rlim_get(limit, res);
++ __vx_cres_fixup(limit, res, value);
++
++ /* not supposed to happen, maybe warn? */
++ if (__rlim_rmax(limit, res) > __rlim_hard(limit, res))
++ __rlim_rmax(limit, res) = __rlim_hard(limit, res);
++ }
++}
++
++
++#endif /* __KERNEL__ */
++#endif /* _VX_LIMIT_INT_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/monitor.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/monitor.h
+--- linux-2.6.20.4/include/linux/vserver/monitor.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/monitor.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,95 @@
++#ifndef _VX_MONITOR_H
++#define _VX_MONITOR_H
++
++
++enum {
++ VXM_UNUSED = 0,
++
++ VXM_SYNC = 0x10,
++
++ VXM_UPDATE = 0x20,
++ VXM_UPDATE_1,
++ VXM_UPDATE_2,
++
++ VXM_RQINFO_1 = 0x24,
++ VXM_RQINFO_2,
++
++ VXM_ACTIVATE = 0x40,
++ VXM_DEACTIVATE,
++ VXM_IDLE,
++
++ VXM_HOLD = 0x44,
++ VXM_UNHOLD,
++
++ VXM_MIGRATE = 0x48,
++ VXM_RESCHED,
++
++ /* all other bits are flags */
++ VXM_SCHED = 0x80,
++};
++
++struct _vxm_update_1 {
++ uint32_t tokens_max;
++ uint32_t fill_rate;
++ uint32_t interval;
++};
++
++struct _vxm_update_2 {
++ uint32_t tokens_min;
++ uint32_t fill_rate;
++ uint32_t interval;
++};
++
++struct _vxm_rqinfo_1 {
++ uint16_t running;
++ uint16_t onhold;
++ uint16_t iowait;
++ uint16_t uintr;
++ uint32_t idle_tokens;
++};
++
++struct _vxm_rqinfo_2 {
++ uint32_t norm_time;
++ uint32_t idle_time;
++ uint32_t idle_skip;
++};
++
++struct _vxm_sched {
++ uint32_t tokens;
++ uint32_t norm_time;
++ uint32_t idle_time;
++};
++
++struct _vxm_task {
++ uint16_t pid;
++ uint16_t state;
++};
++
++struct _vxm_event {
++ uint32_t jif;
++ union {
++ uint32_t seq;
++ uint32_t sec;
++ };
++ union {
++ uint32_t tokens;
++ uint32_t nsec;
++ struct _vxm_task tsk;
++ };
++};
++
++struct _vx_mon_entry {
++ uint16_t type;
++ uint16_t xid;
++ union {
++ struct _vxm_event ev;
++ struct _vxm_sched sd;
++ struct _vxm_update_1 u1;
++ struct _vxm_update_2 u2;
++ struct _vxm_rqinfo_1 q1;
++ struct _vxm_rqinfo_2 q2;
++ };
++};
++
++
++#endif /* _VX_MONITOR_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/network.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/network.h
+--- linux-2.6.20.4/include/linux/vserver/network.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/network.h 2007-02-15 00:05:40 +0100
+@@ -0,0 +1,142 @@
++#ifndef _VX_NETWORK_H
++#define _VX_NETWORK_H
++
++#include <linux/types.h>
++
++
++#define MAX_N_CONTEXT 65535 /* Arbitrary limit */
++
++#define NX_DYNAMIC_ID ((uint32_t)-1) /* id for dynamic context */
++
++#define NB_IPV4ROOT 16
++
++
++/* network flags */
++
++#define NXF_INFO_PRIVATE 0x00000008
++
++#define NXF_STATE_SETUP (1ULL<<32)
++#define NXF_STATE_ADMIN (1ULL<<34)
++
++#define NXF_SC_HELPER (1ULL<<36)
++#define NXF_PERSISTENT (1ULL<<38)
++
++#define NXF_ONE_TIME (0x0005ULL<<32)
++
++#define NXF_INIT_SET (NXF_STATE_ADMIN)
++
++
++/* address types */
++
++#define NXA_TYPE_IPV4 1
++#define NXA_TYPE_IPV6 2
++
++#define NXA_MOD_BCAST (1<<8)
++
++#define NXA_TYPE_ANY ((uint16_t)-1)
++
++
++#ifdef __KERNEL__
++
++#include <linux/list.h>
++#include <linux/spinlock.h>
++#include <linux/rcupdate.h>
++#include <asm/atomic.h>
++
++
++struct nx_info {
++ struct hlist_node nx_hlist; /* linked list of nxinfos */
++ nid_t nx_id; /* vnet id */
++ atomic_t nx_usecnt; /* usage count */
++ atomic_t nx_tasks; /* tasks count */
++ int nx_state; /* context state */
++
++ uint64_t nx_flags; /* network flag word */
++ uint64_t nx_ncaps; /* network capabilities */
++
++ int nbipv4;
++ __u32 ipv4[NB_IPV4ROOT]; /* Process can only bind to these IPs */
++ /* The first one is used to connect */
++ /* and for bind any service */
++ /* The other must be used explicity */
++ __u32 mask[NB_IPV4ROOT]; /* Netmask for each ipv4 */
++ /* Used to select the proper source */
++ /* address for sockets */
++ __u32 v4_bcast; /* Broadcast address to receive UDP */
++
++ char nx_name[65]; /* network context name */
++};
++
++
++/* status flags */
++
++#define NXS_HASHED 0x0001
++#define NXS_SHUTDOWN 0x0100
++#define NXS_RELEASED 0x8000
++
++/* check conditions */
++
++#define NX_ADMIN 0x0001
++#define NX_WATCH 0x0002
++#define NX_BLEND 0x0004
++#define NX_HOSTID 0x0008
++
++#define NX_IDENT 0x0010
++#define NX_EQUIV 0x0020
++#define NX_PARENT 0x0040
++#define NX_CHILD 0x0080
++
++#define NX_ARG_MASK 0x00F0
++
++#define NX_DYNAMIC 0x0100
++#define NX_STATIC 0x0200
++
++#define NX_ATR_MASK 0x0F00
++
++
++extern struct nx_info *lookup_nx_info(int);
++
++extern int get_nid_list(int, unsigned int *, int);
++extern int nid_is_hashed(nid_t);
++
++extern int nx_migrate_task(struct task_struct *, struct nx_info *);
++
++extern long vs_net_change(struct nx_info *, unsigned int);
++
++struct in_ifaddr;
++struct net_device;
++
++#ifdef CONFIG_INET
++int ifa_in_nx_info(struct in_ifaddr *, struct nx_info *);
++int dev_in_nx_info(struct net_device *, struct nx_info *);
++
++#else /* CONFIG_INET */
++static inline
++int ifa_in_nx_info(struct in_ifaddr *a, struct nx_info *n)
++{
++ return 1;
++}
++
++static inline
++int dev_in_nx_info(struct net_device *d, struct nx_info *n)
++{
++ return 1;
++}
++#endif /* CONFIG_INET */
++
++struct sock;
++
++#ifdef CONFIG_INET
++int nx_addr_conflict(struct nx_info *, uint32_t, const struct sock *);
++#else /* CONFIG_INET */
++static inline
++int nx_addr_conflict(struct nx_info *n, uint32_t a, const struct sock *s)
++{
++ return 1;
++}
++#endif /* CONFIG_INET */
++
++#endif /* __KERNEL__ */
++#else /* _VX_NETWORK_H */
++#warning duplicate inclusion
++#endif /* _VX_NETWORK_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/network_cmd.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/network_cmd.h
+--- linux-2.6.20.4/include/linux/vserver/network_cmd.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/network_cmd.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,89 @@
++#ifndef _VX_NETWORK_CMD_H
++#define _VX_NETWORK_CMD_H
++
++
++/* vinfo commands */
++
++#define VCMD_task_nid VC_CMD(VINFO, 2, 0)
++
++#ifdef __KERNEL__
++extern int vc_task_nid(uint32_t, void __user *);
++
++#endif /* __KERNEL__ */
++
++#define VCMD_nx_info VC_CMD(VINFO, 6, 0)
++
++struct vcmd_nx_info_v0 {
++ uint32_t nid;
++ /* more to come */
++};
++
++#ifdef __KERNEL__
++extern int vc_nx_info(struct nx_info *, void __user *);
++
++#endif /* __KERNEL__ */
++
++#define VCMD_net_create_v0 VC_CMD(VNET, 1, 0)
++#define VCMD_net_create VC_CMD(VNET, 1, 1)
++
++struct vcmd_net_create {
++ uint64_t flagword;
++};
++
++#define VCMD_net_migrate VC_CMD(NETMIG, 1, 0)
++
++#define VCMD_net_add VC_CMD(NETALT, 1, 0)
++#define VCMD_net_remove VC_CMD(NETALT, 2, 0)
++
++struct vcmd_net_addr_v0 {
++ uint16_t type;
++ uint16_t count;
++ uint32_t ip[4];
++ uint32_t mask[4];
++ /* more to come */
++};
++
++
++#ifdef __KERNEL__
++extern int vc_net_create(uint32_t, void __user *);
++extern int vc_net_migrate(struct nx_info *, void __user *);
++
++extern int vc_net_add(struct nx_info *, void __user *);
++extern int vc_net_remove(struct nx_info *, void __user *);
++
++#endif /* __KERNEL__ */
++
++
++/* flag commands */
++
++#define VCMD_get_nflags VC_CMD(FLAGS, 5, 0)
++#define VCMD_set_nflags VC_CMD(FLAGS, 6, 0)
++
++struct vcmd_net_flags_v0 {
++ uint64_t flagword;
++ uint64_t mask;
++};
++
++#ifdef __KERNEL__
++extern int vc_get_nflags(struct nx_info *, void __user *);
++extern int vc_set_nflags(struct nx_info *, void __user *);
++
++#endif /* __KERNEL__ */
++
++
++/* network caps commands */
++
++#define VCMD_get_ncaps VC_CMD(FLAGS, 7, 0)
++#define VCMD_set_ncaps VC_CMD(FLAGS, 8, 0)
++
++struct vcmd_net_caps_v0 {
++ uint64_t ncaps;
++ uint64_t cmask;
++};
++
++#ifdef __KERNEL__
++extern int vc_get_ncaps(struct nx_info *, void __user *);
++extern int vc_set_ncaps(struct nx_info *, void __user *);
++
++#endif /* __KERNEL__ */
++#endif /* _VX_CONTEXT_CMD_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/percpu.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/percpu.h
+--- linux-2.6.20.4/include/linux/vserver/percpu.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/percpu.h 2007-03-19 16:17:46 +0100
+@@ -0,0 +1,14 @@
++#ifndef _VX_PERCPU_H
++#define _VX_PERCPU_H
++
++#include "cvirt_def.h"
++#include "sched_def.h"
++
++struct _vx_percpu {
++ struct _vx_cvirt_pc cvirt;
++ struct _vx_sched_pc sched;
++};
++
++#define PERCPU_PERCTX (sizeof(struct _vx_percpu))
++
++#endif /* _VX_PERCPU_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/sched.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/sched.h
+--- linux-2.6.20.4/include/linux/vserver/sched.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/sched.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,26 @@
++#ifndef _VX_SCHED_H
++#define _VX_SCHED_H
++
++
++#ifdef __KERNEL__
++
++struct timespec;
++
++void vx_vsi_uptime(struct timespec *, struct timespec *);
++
++
++struct vx_info;
++
++void vx_update_load(struct vx_info *);
++
++
++int vx_tokens_recalc(struct _vx_sched_pc *,
++ unsigned long *, unsigned long *, int [2]);
++
++void vx_update_sched_param(struct _vx_sched *sched,
++ struct _vx_sched_pc *sched_pc);
++
++#endif /* __KERNEL__ */
++#else /* _VX_SCHED_H */
++#warning duplicate inclusion
++#endif /* _VX_SCHED_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/sched_cmd.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/sched_cmd.h
+--- linux-2.6.20.4/include/linux/vserver/sched_cmd.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/sched_cmd.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,108 @@
++#ifndef _VX_SCHED_CMD_H
++#define _VX_SCHED_CMD_H
++
++
++/* sched vserver commands */
++
++#define VCMD_set_sched_v2 VC_CMD(SCHED, 1, 2)
++#define VCMD_set_sched_v3 VC_CMD(SCHED, 1, 3)
++#define VCMD_set_sched_v4 VC_CMD(SCHED, 1, 4)
++
++struct vcmd_set_sched_v2 {
++ int32_t fill_rate;
++ int32_t interval;
++ int32_t tokens;
++ int32_t tokens_min;
++ int32_t tokens_max;
++ uint64_t cpu_mask;
++};
++
++struct vcmd_set_sched_v3 {
++ uint32_t set_mask;
++ int32_t fill_rate;
++ int32_t interval;
++ int32_t tokens;
++ int32_t tokens_min;
++ int32_t tokens_max;
++ int32_t priority_bias;
++};
++
++struct vcmd_set_sched_v4 {
++ uint32_t set_mask;
++ int32_t fill_rate;
++ int32_t interval;
++ int32_t tokens;
++ int32_t tokens_min;
++ int32_t tokens_max;
++ int32_t prio_bias;
++ int32_t cpu_id;
++ int32_t bucket_id;
++};
++
++#define VCMD_set_sched VC_CMD(SCHED, 1, 5)
++#define VCMD_get_sched VC_CMD(SCHED, 2, 5)
++
++struct vcmd_sched_v5 {
++ uint32_t mask;
++ int32_t cpu_id;
++ int32_t bucket_id;
++ int32_t fill_rate[2];
++ int32_t interval[2];
++ int32_t tokens;
++ int32_t tokens_min;
++ int32_t tokens_max;
++ int32_t prio_bias;
++};
++
++#define VXSM_FILL_RATE 0x0001
++#define VXSM_INTERVAL 0x0002
++#define VXSM_FILL_RATE2 0x0004
++#define VXSM_INTERVAL2 0x0008
++#define VXSM_TOKENS 0x0010
++#define VXSM_TOKENS_MIN 0x0020
++#define VXSM_TOKENS_MAX 0x0040
++#define VXSM_PRIO_BIAS 0x0100
++
++#define VXSM_IDLE_TIME 0x0200
++#define VXSM_FORCE 0x0400
++
++#define VXSM_V3_MASK 0x0173
++#define VXSM_SET_MASK 0x01FF
++
++#define VXSM_CPU_ID 0x1000
++#define VXSM_BUCKET_ID 0x2000
++
++#define VXSM_MSEC 0x4000
++
++#define SCHED_KEEP (-2) /* only for v2 */
++
++#ifdef __KERNEL__
++
++#include <linux/compiler.h>
++
++extern int vc_set_sched_v2(struct vx_info *, void __user *);
++extern int vc_set_sched_v3(struct vx_info *, void __user *);
++extern int vc_set_sched_v4(struct vx_info *, void __user *);
++extern int vc_set_sched(struct vx_info *, void __user *);
++extern int vc_get_sched(struct vx_info *, void __user *);
++
++#endif /* __KERNEL__ */
++
++#define VCMD_sched_info VC_CMD(SCHED, 3, 0)
++
++struct vcmd_sched_info {
++ int32_t cpu_id;
++ int32_t bucket_id;
++ uint64_t user_msec;
++ uint64_t sys_msec;
++ uint64_t hold_msec;
++ uint32_t token_usec;
++ int32_t vavavoom;
++};
++
++#ifdef __KERNEL__
++
++extern int vc_sched_info(struct vx_info *, void __user *);
++
++#endif /* __KERNEL__ */
++#endif /* _VX_SCHED_CMD_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/sched_def.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/sched_def.h
+--- linux-2.6.20.4/include/linux/vserver/sched_def.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/sched_def.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,68 @@
++#ifndef _VX_SCHED_DEF_H
++#define _VX_SCHED_DEF_H
++
++#include <linux/spinlock.h>
++#include <linux/jiffies.h>
++#include <linux/cpumask.h>
++#include <asm/atomic.h>
++#include <asm/param.h>
++
++
++/* context sub struct */
++
++struct _vx_sched {
++ spinlock_t tokens_lock; /* lock for token bucket */
++
++ int tokens; /* number of CPU tokens */
++ int fill_rate[2]; /* Fill rate: add X tokens... */
++ int interval[2]; /* Divisor: per Y jiffies */
++ int tokens_min; /* Limit: minimum for unhold */
++ int tokens_max; /* Limit: no more than N tokens */
++
++ int prio_bias; /* bias offset for priority */
++
++ unsigned update_mask; /* which features should be updated */
++ cpumask_t update; /* CPUs which should update */
++};
++
++struct _vx_sched_pc {
++ int tokens; /* number of CPU tokens */
++ int flags; /* bucket flags */
++
++ int fill_rate[2]; /* Fill rate: add X tokens... */
++ int interval[2]; /* Divisor: per Y jiffies */
++ int tokens_min; /* Limit: minimum for unhold */
++ int tokens_max; /* Limit: no more than N tokens */
++
++ int prio_bias; /* bias offset for priority */
++ int vavavoom; /* last calculated vavavoom */
++
++ unsigned long norm_time; /* last time accounted */
++ unsigned long idle_time; /* non linear time for fair sched */
++ unsigned long token_time; /* token time for accounting */
++ unsigned long onhold; /* jiffies when put on hold */
++
++ uint64_t user_ticks; /* token tick events */
++ uint64_t sys_ticks; /* token tick events */
++ uint64_t hold_ticks; /* token ticks paused */
++};
++
++
++#define VXSF_ONHOLD 0x0001
++#define VXSF_IDLE_TIME 0x0100
++
++#ifdef CONFIG_VSERVER_DEBUG
++
++static inline void __dump_vx_sched(struct _vx_sched *sched)
++{
++ printk("\t_vx_sched:\n");
++ printk("\t tokens: %4d/%4d, %4d/%4d, %4d, %4d\n",
++ sched->fill_rate[0], sched->interval[0],
++ sched->fill_rate[1], sched->interval[1],
++ sched->tokens_min, sched->tokens_max);
++ printk("\t priority = %4d\n", sched->prio_bias);
++}
++
++#endif
++
++#endif /* _VX_SCHED_DEF_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/signal.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/signal.h
+--- linux-2.6.20.4/include/linux/vserver/signal.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/signal.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,14 @@
++#ifndef _VX_SIGNAL_H
++#define _VX_SIGNAL_H
++
++
++#ifdef __KERNEL__
++
++struct vx_info;
++
++int vx_info_kill(struct vx_info *, int, int);
++
++#endif /* __KERNEL__ */
++#else /* _VX_SIGNAL_H */
++#warning duplicate inclusion
++#endif /* _VX_SIGNAL_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/signal_cmd.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/signal_cmd.h
+--- linux-2.6.20.4/include/linux/vserver/signal_cmd.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/signal_cmd.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,43 @@
++#ifndef _VX_SIGNAL_CMD_H
++#define _VX_SIGNAL_CMD_H
++
++
++/* signalling vserver commands */
++
++#define VCMD_ctx_kill VC_CMD(PROCTRL, 1, 0)
++#define VCMD_wait_exit VC_CMD(EVENT, 99, 0)
++
++struct vcmd_ctx_kill_v0 {
++ int32_t pid;
++ int32_t sig;
++};
++
++struct vcmd_wait_exit_v0 {
++ int32_t reboot_cmd;
++ int32_t exit_code;
++};
++
++#ifdef __KERNEL__
++
++extern int vc_ctx_kill(struct vx_info *, void __user *);
++extern int vc_wait_exit(struct vx_info *, void __user *);
++
++#endif /* __KERNEL__ */
++
++/* process alteration commands */
++
++#define VCMD_get_pflags VC_CMD(PROCALT, 5, 0)
++#define VCMD_set_pflags VC_CMD(PROCALT, 6, 0)
++
++struct vcmd_pflags_v0 {
++ uint32_t flagword;
++ uint32_t mask;
++};
++
++#ifdef __KERNEL__
++
++extern int vc_get_pflags(uint32_t pid, void __user *);
++extern int vc_set_pflags(uint32_t pid, void __user *);
++
++#endif /* __KERNEL__ */
++#endif /* _VX_SIGNAL_CMD_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/space.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/space.h
+--- linux-2.6.20.4/include/linux/vserver/space.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/space.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,13 @@
++#ifndef _VX_SPACE_H
++#define _VX_SPACE_H
++
++
++#include <linux/types.h>
++
++struct vx_info;
++
++int vx_set_space(struct vx_info *vxi, unsigned long mask);
++
++#else /* _VX_SPACE_H */
++#warning duplicate inclusion
++#endif /* _VX_SPACE_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/space_cmd.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/space_cmd.h
+--- linux-2.6.20.4/include/linux/vserver/space_cmd.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/space_cmd.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,26 @@
++#ifndef _VX_SPACE_CMD_H
++#define _VX_SPACE_CMD_H
++
++
++#define VCMD_enter_space_v0 VC_CMD(PROCALT, 1, 0)
++#define VCMD_enter_space VC_CMD(PROCALT, 1, 1)
++
++#define VCMD_set_space_v0 VC_CMD(PROCALT, 3, 0)
++#define VCMD_set_space VC_CMD(PROCALT, 3, 1)
++
++#define VCMD_get_space_mask VC_CMD(PROCALT, 4, 0)
++
++
++struct vcmd_space_mask {
++ uint64_t mask;
++};
++
++
++#ifdef __KERNEL__
++
++extern int vc_enter_space(struct vx_info *, void __user *);
++extern int vc_set_space(struct vx_info *, void __user *);
++extern int vc_get_space_mask(struct vx_info *, void __user *);
++
++#endif /* __KERNEL__ */
++#endif /* _VX_SPACE_CMD_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/switch.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/switch.h
+--- linux-2.6.20.4/include/linux/vserver/switch.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/switch.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,95 @@
++#ifndef _VX_SWITCH_H
++#define _VX_SWITCH_H
++
++#include <linux/types.h>
++
++
++#define VC_CATEGORY(c) (((c) >> 24) & 0x3F)
++#define VC_COMMAND(c) (((c) >> 16) & 0xFF)
++#define VC_VERSION(c) ((c) & 0xFFF)
++
++#define VC_CMD(c,i,v) ((((VC_CAT_ ## c) & 0x3F) << 24) \
++ | (((i) & 0xFF) << 16) | ((v) & 0xFFF))
++
++/*
++
++ Syscall Matrix V2.8
++
++ |VERSION|CREATE |MODIFY |MIGRATE|CONTROL|EXPERIM| |SPECIAL|SPECIAL|
++ |STATS |DESTROY|ALTER |CHANGE |LIMIT |TEST | | | |
++ |INFO |SETUP | |MOVE | | | | | |
++ -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
++ SYSTEM |VERSION|VSETUP |VHOST | | | | |DEVICES| |
++ HOST | 00| 01| 02| 03| 04| 05| | 06| 07|
++ -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
++ CPU | |VPROC |PROCALT|PROCMIG|PROCTRL| | |SCHED. | |
++ PROCESS| 08| 09| 10| 11| 12| 13| | 14| 15|
++ -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
++ MEMORY | | | | | | | |SWAP | |
++ | 16| 17| 18| 19| 20| 21| | 22| 23|
++ -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
++ NETWORK| |VNET |NETALT |NETMIG |NETCTL | | |SERIAL | |
++ | 24| 25| 26| 27| 28| 29| | 30| 31|
++ -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
++ DISK | | | | |DLIMIT | | |INODE | |
++ VFS | 32| 33| 34| 35| 36| 37| | 38| 39|
++ -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
++ OTHER |VSTAT | | | | | | |VINFO | |
++ | 40| 41| 42| 43| 44| 45| | 46| 47|
++ =======+=======+=======+=======+=======+=======+=======+ +=======+=======+
++ SPECIAL|EVENT | | | |FLAGS | | | | |
++ | 48| 49| 50| 51| 52| 53| | 54| 55|
++ -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
++ SPECIAL|DEBUG | | | |RLIMIT |SYSCALL| | |COMPAT |
++ | 56| 57| 58| 59| 60|TEST 61| | 62| 63|
++ -------+-------+-------+-------+-------+-------+-------+ +-------+-------+
++
++*/
++
++#define VC_CAT_VERSION 0
++
++#define VC_CAT_VSETUP 1
++#define VC_CAT_VHOST 2
++
++#define VC_CAT_VPROC 9
++#define VC_CAT_PROCALT 10
++#define VC_CAT_PROCMIG 11
++#define VC_CAT_PROCTRL 12
++
++#define VC_CAT_SCHED 14
++
++#define VC_CAT_VNET 25
++#define VC_CAT_NETALT 26
++#define VC_CAT_NETMIG 27
++#define VC_CAT_NETCTRL 28
++
++#define VC_CAT_DLIMIT 36
++#define VC_CAT_INODE 38
++
++#define VC_CAT_VSTAT 40
++#define VC_CAT_VINFO 46
++#define VC_CAT_EVENT 48
++
++#define VC_CAT_FLAGS 52
++#define VC_CAT_DEBUG 56
++#define VC_CAT_RLIMIT 60
++
++#define VC_CAT_SYSTEST 61
++#define VC_CAT_COMPAT 63
++
++/* query version */
++
++#define VCMD_get_version VC_CMD(VERSION, 0, 0)
++#define VCMD_get_vci VC_CMD(VERSION, 1, 0)
++
++
++#ifdef __KERNEL__
++
++#include <linux/errno.h>
++
++
++#else /* __KERNEL__ */
++#define __user
++#endif /* __KERNEL__ */
++
++#endif /* _VX_SWITCH_H */
+diff -NurpP --minimal linux-2.6.20.4/include/linux/vserver/tag.h linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/tag.h
+--- linux-2.6.20.4/include/linux/vserver/tag.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/linux/vserver/tag.h 2007-03-10 18:02:51 +0100
+@@ -0,0 +1,140 @@
++#ifndef _DX_TAG_H
++#define _DX_TAG_H
++
++
++#define DX_TAG(in) (IS_TAGGED(in))
++
++
++#ifdef CONFIG_DX_TAG_NFSD
++#define DX_TAG_NFSD 1
++#else
++#define DX_TAG_NFSD 0
++#endif
++
++
++#ifdef CONFIG_TAGGING_NONE
++
++#define MAX_UID 0xFFFFFFFF
++#define MAX_GID 0xFFFFFFFF
++
++#define INOTAG_TAG(cond, uid, gid, tag) (0)
++
++#define TAGINO_UID(cond, uid, tag) (uid)
++#define TAGINO_GID(cond, gid, tag) (gid)
++
++#endif
++
++
++#ifdef CONFIG_TAGGING_GID16
++
++#define MAX_UID 0xFFFFFFFF
++#define MAX_GID 0x0000FFFF
++
++#define INOTAG_TAG(cond, uid, gid, tag) \
++ ((cond) ? (((gid) >> 16) & 0xFFFF) : 0)
++
++#define TAGINO_UID(cond, uid, tag) (uid)
++#define TAGINO_GID(cond, gid, tag) \
++ ((cond) ? (((gid) & 0xFFFF) | ((tag) << 16)) : (gid))
++
++#endif
++
++
++#ifdef CONFIG_TAGGING_ID24
++
++#define MAX_UID 0x00FFFFFF
++#define MAX_GID 0x00FFFFFF
++
++#define INOTAG_TAG(cond, uid, gid, tag) \
++ ((cond) ? ((((uid) >> 16) & 0xFF00) | (((gid) >> 24) & 0xFF)) : 0)
++
++#define TAGINO_UID(cond, uid, tag) \
++ ((cond) ? (((uid) & 0xFFFFFF) | (((tag) & 0xFF00) << 16)) : (uid))
++#define TAGINO_GID(cond, gid, tag) \
++ ((cond) ? (((gid) & 0xFFFFFF) | (((tag) & 0x00FF) << 24)) : (gid))
++
++#endif
++
++
++#ifdef CONFIG_TAGGING_UID16
++
++#define MAX_UID 0x0000FFFF
++#define MAX_GID 0xFFFFFFFF
++
++#define INOTAG_TAG(cond, uid, gid, tag) \
++ ((cond) ? (((uid) >> 16) & 0xFFFF) : 0)
++
++#define TAGINO_UID(cond, uid, tag) \
++ ((cond) ? (((uid) & 0xFFFF) | ((tag) << 16)) : (uid))
++#define TAGINO_GID(cond, gid, tag) (gid)
++
++#endif
++
++
++#ifdef CONFIG_TAGGING_INTERN
++
++#define MAX_UID 0xFFFFFFFF
++#define MAX_GID 0xFFFFFFFF
++
++#define INOTAG_TAG(cond, uid, gid, tag) \
++ ((cond) ? (tag) : 0)
++
++#define TAGINO_UID(cond, uid, tag) (uid)
++#define TAGINO_GID(cond, gid, tag) (gid)
++
++#endif
++
++
++#ifndef CONFIG_TAGGING_NONE
++#define dx_current_fstag(sb) \
++ ((sb)->s_flags & MS_TAGGED ? dx_current_tag(): 0)
++#else
++#define dx_current_fstag(sb) (0)
++#endif
++
++#ifndef CONFIG_TAGGING_INTERN
++#define TAGINO_TAG(cond, tag) (0)
++#else
++#define TAGINO_TAG(cond, tag) ((cond) ? (tag) : 0)
++#endif
++
++#define INOTAG_UID(cond, uid, gid) \
++ ((cond) ? ((uid) & MAX_UID) : (uid))
++#define INOTAG_GID(cond, uid, gid) \
++ ((cond) ? ((gid) & MAX_GID) : (gid))
++
++
++static inline uid_t dx_map_uid(uid_t uid)
++{
++ if ((uid > MAX_UID) && (uid != -1))
++ uid = -2;
++ return (uid & MAX_UID);
++}
++
++static inline gid_t dx_map_gid(gid_t gid)
++{
++ if ((gid > MAX_GID) && (gid != -1))
++ gid = -2;
++ return (gid & MAX_GID);
++}
++
++
++#ifdef CONFIG_VSERVER_LEGACY
++#define FIOC_GETTAG _IOR('x', 1, long)
++#define FIOC_SETTAG _IOW('x', 2, long)
++#define FIOC_SETTAGJ _IOW('x', 3, long)
++#endif
++
++#ifdef CONFIG_PROPAGATE
++
++int dx_parse_tag(char *string, tag_t *tag, int remove);
++
++void __dx_propagate_tag(struct nameidata *nd, struct inode *inode);
++
++#define dx_propagate_tag(n,i) __dx_propagate_tag(n,i)
++
++#else
++#define dx_propagate_tag(n,i) do { } while (0)
++#endif
++
++#endif /* _DX_TAG_H */
+diff -NurpP --minimal linux-2.6.20.4/include/net/af_unix.h linux-2.6.20.4-vs2.2.0-rc20/include/net/af_unix.h
+--- linux-2.6.20.4/include/net/af_unix.h 2006-09-20 16:58:44 +0200
++++ linux-2.6.20.4-vs2.2.0-rc20/include/net/af_unix.h 2007-02-06 03:05:22 +0100
+@@ -4,6 +4,7 @@
+ #include <linux/socket.h>
+ #include <linux/un.h>
+ #include <linux/mutex.h>
++#include <linux/vs_base.h>
+ #include <net/sock.h>
+
+ extern void unix_inflight(struct file *fp);
+@@ -17,9 +18,9 @@ extern spinlock_t unix_table_lock;
+
+ extern atomic_t unix_tot_inflight;
+
+-static inline struct sock *first_unix_socket(int *i)
++static inline struct sock *next_unix_socket_table(int *i)
+ {
+- for (*i = 0; *i <= UNIX_HASH_SIZE; (*i)++) {
++ for ((*i)++; *i <= UNIX_HASH_SIZE; (*i)++) {
+ if (!hlist_empty(&unix_socket_table[*i]))
+ return __sk_head(&unix_socket_table[*i]);
+ }
+@@ -28,16 +29,19 @@ static inline struct sock *first_unix_so
+
+ static inline struct sock *next_unix_socket(int *i, struct sock *s)
+ {
+- struct sock *next = sk_next(s);
+- /* More in this chain? */
+- if (next)
+- return next;
+- /* Look for next non-empty chain. */
+- for ((*i)++; *i <= UNIX_HASH_SIZE; (*i)++) {
+- if (!hlist_empty(&unix_socket_table[*i]))
+- return __sk_head(&unix_socket_table[*i]);
+- }
+- return NULL;
++ do {
++ if (s)
++ s = sk_next(s);
++ if (!s)
++ s = next_unix_socket_table(i);
++ } while (s && !nx_check(s->sk_nid, VS_WATCH_P|VS_IDENT));
++ return s;
++}
++
++static inline struct sock *first_unix_socket(int *i)
++{
++ *i = 0;
++ return next_unix_socket(i, NULL);
+ }
+
+ #define forall_unix_sockets(i, s) \
+diff -NurpP --minimal linux-2.6.20.4/include/net/inet_hashtables.h linux-2.6.20.4-vs2.2.0-rc20/include/net/inet_hashtables.h
+--- linux-2.6.20.4/include/net/inet_hashtables.h 2007-02-06 03:01:52 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/net/inet_hashtables.h 2007-02-06 03:05:22 +0100
+@@ -271,6 +271,26 @@ static inline int inet_iif(const struct
+ return ((struct rtable *)skb->dst)->rt_iif;
+ }
+
++/*
++ * Check if a given address matches for an inet socket
++ *
++ * nxi: the socket's nx_info if any
++ * addr: to be verified address
++ * saddr: socket addresses
++ */
++static inline int inet_addr_match (
++ struct nx_info *nxi,
++ uint32_t addr,
++ uint32_t saddr)
++{
++ if (addr && (saddr == addr))
++ return 1;
++ if (!saddr)
++ return addr_in_nx_info(nxi, addr);
++ return 0;
++}
++
++
+ extern struct sock *__inet_lookup_listener(struct inet_hashinfo *hashinfo,
+ const __be32 daddr,
+ const unsigned short hnum,
+diff -NurpP --minimal linux-2.6.20.4/include/net/inet_sock.h linux-2.6.20.4-vs2.2.0-rc20/include/net/inet_sock.h
+--- linux-2.6.20.4/include/net/inet_sock.h 2006-11-30 21:19:40 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/net/inet_sock.h 2007-02-06 03:05:22 +0100
+@@ -112,6 +112,7 @@ struct inet_sock {
+ /* Socket demultiplex comparisons on incoming packets. */
+ __be32 daddr;
+ __be32 rcv_saddr;
++ __be32 rcv_saddr2; /* Second bound ipv4 addr, for ipv4root */
+ __be16 dport;
+ __u16 num;
+ __be32 saddr;
+diff -NurpP --minimal linux-2.6.20.4/include/net/inet_timewait_sock.h linux-2.6.20.4-vs2.2.0-rc20/include/net/inet_timewait_sock.h
+--- linux-2.6.20.4/include/net/inet_timewait_sock.h 2007-03-17 23:20:39 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/net/inet_timewait_sock.h 2007-03-16 17:04:51 +0100
+@@ -115,6 +115,10 @@ struct inet_timewait_sock {
+ #define tw_refcnt __tw_common.skc_refcnt
+ #define tw_hash __tw_common.skc_hash
+ #define tw_prot __tw_common.skc_prot
++#define tw_xid __tw_common.skc_xid
++#define tw_vx_info __tw_common.skc_vx_info
++#define tw_nid __tw_common.skc_nid
++#define tw_nx_info __tw_common.skc_nx_info
+ volatile unsigned char tw_substate;
+ /* 3 bits hole, try to pack */
+ unsigned char tw_rcv_wscale;
+diff -NurpP --minimal linux-2.6.20.4/include/net/route.h linux-2.6.20.4-vs2.2.0-rc20/include/net/route.h
+--- linux-2.6.20.4/include/net/route.h 2006-11-30 21:19:40 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/net/route.h 2007-02-06 03:05:22 +0100
+@@ -27,12 +27,16 @@
+ #include <net/dst.h>
+ #include <net/inetpeer.h>
+ #include <net/flow.h>
++#include <net/inet_sock.h>
+ #include <linux/in_route.h>
+ #include <linux/rtnetlink.h>
+ #include <linux/route.h>
+ #include <linux/ip.h>
+ #include <linux/cache.h>
+ #include <linux/security.h>
++#include <linux/vs_base.h>
++#include <linux/vs_network.h>
++#include <linux/in.h>
+
+ #ifndef __KERNEL__
+ #warning This file is not supposed to be used outside of kernel.
+@@ -144,6 +148,59 @@ static inline char rt_tos2priority(u8 to
+ return ip_tos2prio[IPTOS_TOS(tos)>>1];
+ }
+
++#define IPI_LOOPBACK htonl(INADDR_LOOPBACK)
++
++static inline int ip_find_src(struct nx_info *nxi, struct rtable **rp, struct flowi *fl)
++{
++ int err;
++ int i, n = nxi->nbipv4;
++ u32 ipv4root = nxi->ipv4[0];
++
++ if (ipv4root == 0)
++ return 0;
++
++ if (fl->fl4_src == 0) {
++ if (n > 1) {
++ u32 foundsrc;
++
++ err = __ip_route_output_key(rp, fl);
++ if (err) {
++ fl->fl4_src = ipv4root;
++ err = __ip_route_output_key(rp, fl);
++ }
++ if (err)
++ return err;
++
++ foundsrc = (*rp)->rt_src;
++ ip_rt_put(*rp);
++
++ for (i=0; i<n; i++){
++ u32 mask = nxi->mask[i];
++ u32 ipv4 = nxi->ipv4[i];
++ u32 net4 = ipv4 & mask;
++
++ if (foundsrc == ipv4) {
++ fl->fl4_src = ipv4;
++ break;
++ }
++ if (!fl->fl4_src && (foundsrc & mask) == net4)
++ fl->fl4_src = ipv4;
++ }
++ }
++ if (fl->fl4_src == 0)
++ fl->fl4_src = (fl->fl4_dst == IPI_LOOPBACK)
++ ? IPI_LOOPBACK : ipv4root;
++ } else {
++ for (i=0; i<n; i++) {
++ if (nxi->ipv4[i] == fl->fl4_src)
++ break;
++ }
++ if (i == n)
++ return -EPERM;
++ }
++ return 0;
++}
++
+ static inline int ip_route_connect(struct rtable **rp, __be32 dst,
+ __be32 src, u32 tos, int oif, u8 protocol,
+ __be16 sport, __be16 dport, struct sock *sk)
+@@ -158,7 +215,27 @@ static inline int ip_route_connect(struc
+ .dport = dport } } };
+
+ int err;
+- if (!dst || !src) {
++ struct nx_info *nx_info = current->nx_info;
++
++ if (sk)
++ nx_info = sk->sk_nx_info;
++ vxdprintk(VXD_CBIT(net, 4),
++ "ip_route_connect(%p) %p,%p;%lx",
++ sk, nx_info, sk->sk_socket,
++ (sk->sk_socket?sk->sk_socket->flags:0));
++
++ if (nx_info) {
++ err = ip_find_src(nx_info, rp, &fl);
++ if (err)
++ return err;
++ if (fl.fl4_dst == IPI_LOOPBACK && !nx_check(0, VS_ADMIN))
++ fl.fl4_dst = nx_info->ipv4[0];
++#ifdef CONFIG_VSERVER_REMAP_SADDR
++ if (fl.fl4_src == IPI_LOOPBACK && !nx_check(0, VS_ADMIN))
++ fl.fl4_src = nx_info->ipv4[0];
++#endif
++ }
++ if (!fl.fl4_dst || !fl.fl4_src) {
+ err = __ip_route_output_key(rp, &fl);
+ if (err)
+ return err;
+diff -NurpP --minimal linux-2.6.20.4/include/net/sock.h linux-2.6.20.4-vs2.2.0-rc20/include/net/sock.h
+--- linux-2.6.20.4/include/net/sock.h 2007-02-06 03:01:53 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/include/net/sock.h 2007-02-06 03:05:22 +0100
+@@ -119,6 +119,10 @@ struct sock_common {
+ atomic_t skc_refcnt;
+ unsigned int skc_hash;
+ struct proto *skc_prot;
++ xid_t skc_xid;
++ struct vx_info *skc_vx_info;
++ nid_t skc_nid;
++ struct nx_info *skc_nx_info;
+ };
+
+ /**
+@@ -195,6 +199,10 @@ struct sock {
+ #define sk_refcnt __sk_common.skc_refcnt
+ #define sk_hash __sk_common.skc_hash
+ #define sk_prot __sk_common.skc_prot
++#define sk_xid __sk_common.skc_xid
++#define sk_vx_info __sk_common.skc_vx_info
++#define sk_nid __sk_common.skc_nid
++#define sk_nx_info __sk_common.skc_nx_info
+ unsigned char sk_shutdown : 2,
+ sk_no_check : 2,
+ sk_userlocks : 4;
+diff -NurpP --minimal linux-2.6.20.4/init/main.c linux-2.6.20.4-vs2.2.0-rc20/init/main.c
+--- linux-2.6.20.4/init/main.c 2007-02-06 03:01:55 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/init/main.c 2007-03-19 16:18:00 +0100
+@@ -52,6 +52,7 @@
+ #include <linux/lockdep.h>
+ #include <linux/pid_namespace.h>
+ #include <linux/device.h>
++#include <linux/vserver/percpu.h>
+
+ #include <asm/io.h>
+ #include <asm/bugs.h>
+@@ -359,7 +360,7 @@ EXPORT_SYMBOL(__per_cpu_offset);
+
+ static void __init setup_per_cpu_areas(void)
+ {
+- unsigned long size, i;
++ unsigned long size, vspc, i;
+ char *ptr;
+ unsigned long nr_possible_cpus = num_possible_cpus();
+
+@@ -369,6 +370,8 @@ static void __init setup_per_cpu_areas(v
+ if (size < PERCPU_ENOUGH_ROOM)
+ size = PERCPU_ENOUGH_ROOM;
+ #endif
++ vspc = PERCPU_PERCTX * CONFIG_VSERVER_CONTEXTS;
++ size = ALIGN(size + vspc, SMP_CACHE_BYTES);
+ ptr = alloc_bootmem(size * nr_possible_cpus);
+
+ for_each_possible_cpu(i) {
+diff -NurpP --minimal linux-2.6.20.4/ipc/mqueue.c linux-2.6.20.4-vs2.2.0-rc20/ipc/mqueue.c
+--- linux-2.6.20.4/ipc/mqueue.c 2007-02-06 03:01:55 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/ipc/mqueue.c 2007-02-06 03:05:22 +0100
+@@ -29,6 +29,8 @@
+ #include <linux/audit.h>
+ #include <linux/signal.h>
+ #include <linux/mutex.h>
++#include <linux/vs_context.h>
++#include <linux/vs_limit.h>
+
+ #include <net/sock.h>
+ #include "util.h"
+@@ -151,17 +153,20 @@ static struct inode *mqueue_get_inode(st
+ spin_lock(&mq_lock);
+ if (u->mq_bytes + mq_bytes < u->mq_bytes ||
+ u->mq_bytes + mq_bytes >
+- p->signal->rlim[RLIMIT_MSGQUEUE].rlim_cur) {
++ p->signal->rlim[RLIMIT_MSGQUEUE].rlim_cur ||
++ !vx_ipcmsg_avail(p->vx_info, mq_bytes)) {
+ spin_unlock(&mq_lock);
+ goto out_inode;
+ }
+ u->mq_bytes += mq_bytes;
++ vx_ipcmsg_add(p->vx_info, u, mq_bytes);
+ spin_unlock(&mq_lock);
+
+ info->messages = kmalloc(mq_msg_tblsz, GFP_KERNEL);
+ if (!info->messages) {
+ spin_lock(&mq_lock);
+ u->mq_bytes -= mq_bytes;
++ vx_ipcmsg_sub(p->vx_info, u, mq_bytes);
+ spin_unlock(&mq_lock);
+ goto out_inode;
+ }
+@@ -259,10 +264,14 @@ static void mqueue_delete_inode(struct i
+ (info->attr.mq_maxmsg * info->attr.mq_msgsize));
+ user = info->user;
+ if (user) {
++ struct vx_info *vxi = lookup_vx_info(user->xid);
++
+ spin_lock(&mq_lock);
+ user->mq_bytes -= mq_bytes;
++ vx_ipcmsg_sub(vxi, user, mq_bytes);
+ queues_count--;
+ spin_unlock(&mq_lock);
++ put_vx_info(vxi);
+ free_uid(user);
+ }
+ }
+@@ -747,7 +756,7 @@ asmlinkage long sys_mq_unlink(const char
+ if (inode)
+ atomic_inc(&inode->i_count);
+
+- err = vfs_unlink(dentry->d_parent->d_inode, dentry);
++ err = vfs_unlink(dentry->d_parent->d_inode, dentry, NULL);
+ out_err:
+ dput(dentry);
+
+diff -NurpP --minimal linux-2.6.20.4/ipc/msg.c linux-2.6.20.4-vs2.2.0-rc20/ipc/msg.c
+--- linux-2.6.20.4/ipc/msg.c 2007-02-06 03:01:55 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/ipc/msg.c 2007-03-10 18:02:51 +0100
+@@ -36,6 +36,7 @@
+ #include <linux/seq_file.h>
+ #include <linux/mutex.h>
+ #include <linux/nsproxy.h>
++#include <linux/vs_base.h>
+
+ #include <asm/current.h>
+ #include <asm/uaccess.h>
+@@ -149,6 +150,7 @@ static int newque (struct ipc_namespace
+
+ msq->q_perm.mode = msgflg & S_IRWXUGO;
+ msq->q_perm.key = key;
++ msq->q_perm.xid = vx_current_xid();
+
+ msq->q_perm.security = NULL;
+ retval = security_msg_queue_alloc(msq);
+diff -NurpP --minimal linux-2.6.20.4/ipc/sem.c linux-2.6.20.4-vs2.2.0-rc20/ipc/sem.c
+--- linux-2.6.20.4/ipc/sem.c 2007-02-06 03:01:55 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/ipc/sem.c 2007-03-10 18:02:51 +0100
+@@ -83,6 +83,8 @@
+ #include <linux/seq_file.h>
+ #include <linux/mutex.h>
+ #include <linux/nsproxy.h>
++#include <linux/vs_base.h>
++#include <linux/vs_limit.h>
+
+ #include <asm/uaccess.h>
+ #include "util.h"
+@@ -230,6 +232,7 @@ static int newary (struct ipc_namespace
+
+ sma->sem_perm.mode = (semflg & S_IRWXUGO);
+ sma->sem_perm.key = key;
++ sma->sem_perm.xid = vx_current_xid();
+
+ sma->sem_perm.security = NULL;
+ retval = security_sem_alloc(sma);
+@@ -245,6 +248,9 @@ static int newary (struct ipc_namespace
+ return -ENOSPC;
+ }
+ ns->used_sems += nsems;
++ /* FIXME: obsoleted? */
++ vx_semary_inc(sma);
++ vx_nsems_add(sma, nsems);
+
+ sma->sem_id = sem_buildid(ns, id, sma->sem_perm.seq);
+ sma->sem_base = (struct sem *) &sma[1];
+@@ -526,6 +532,9 @@ static void freeary (struct ipc_namespac
+ sem_unlock(sma);
+
+ ns->used_sems -= sma->sem_nsems;
++ /* FIXME: obsoleted? */
++ vx_nsems_sub(sma, sma->sem_nsems);
++ vx_semary_dec(sma);
+ size = sizeof (*sma) + sma->sem_nsems * sizeof (struct sem);
+ security_sem_free(sma);
+ ipc_rcu_putref(sma);
+diff -NurpP --minimal linux-2.6.20.4/ipc/shm.c linux-2.6.20.4-vs2.2.0-rc20/ipc/shm.c
+--- linux-2.6.20.4/ipc/shm.c 2007-02-06 03:01:55 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/ipc/shm.c 2007-03-10 18:02:51 +0100
+@@ -37,6 +37,8 @@
+ #include <linux/seq_file.h>
+ #include <linux/mutex.h>
+ #include <linux/nsproxy.h>
++#include <linux/vs_context.h>
++#include <linux/vs_limit.h>
+
+ #include <asm/uaccess.h>
+
+@@ -181,7 +183,12 @@ static void shm_open(struct vm_area_stru
+ */
+ static void shm_destroy(struct ipc_namespace *ns, struct shmid_kernel *shp)
+ {
+- ns->shm_tot -= (shp->shm_segsz + PAGE_SIZE - 1) >> PAGE_SHIFT;
++ struct vx_info *vxi = lookup_vx_info(shp->shm_perm.xid);
++ int numpages = (shp->shm_segsz + PAGE_SIZE - 1) >> PAGE_SHIFT;
++
++ vx_ipcshm_sub(vxi, shp, numpages);
++ ns->shm_tot -= numpages;
++
+ shm_rmid(ns, shp->id);
+ shm_unlock(shp);
+ if (!is_file_hugepages(shp->shm_file))
+@@ -191,6 +198,7 @@ static void shm_destroy(struct ipc_names
+ shp->mlock_user);
+ fput (shp->shm_file);
+ security_shm_free(shp);
++ put_vx_info(vxi);
+ ipc_rcu_putref(shp);
+ }
+
+@@ -282,11 +290,15 @@ static int newseg (struct ipc_namespace
+ if (ns->shm_tot + numpages > ns->shm_ctlall)
+ return -ENOSPC;
+
++ if (!vx_ipcshm_avail(current->vx_info, numpages))
++ return -ENOSPC;
++
+ shp = ipc_rcu_alloc(sizeof(*shp));
+ if (!shp)
+ return -ENOMEM;
+
+ shp->shm_perm.key = key;
++ shp->shm_perm.xid = vx_current_xid();
+ shp->shm_perm.mode = (shmflg & S_IRWXUGO);
+ shp->mlock_user = NULL;
+
+@@ -339,6 +351,7 @@ static int newseg (struct ipc_namespace
+ file->f_op = &shm_file_operations;
+
+ ns->shm_tot += numpages;
++ vx_ipcshm_add(current->vx_info, key, numpages);
+ shm_unlock(shp);
+ return shp->id;
+
+diff -NurpP --minimal linux-2.6.20.4/ipc/util.c linux-2.6.20.4-vs2.2.0-rc20/ipc/util.c
+--- linux-2.6.20.4/ipc/util.c 2007-02-06 03:01:55 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/ipc/util.c 2007-03-10 18:02:51 +0100
+@@ -33,6 +33,8 @@
+ #include <linux/proc_fs.h>
+ #include <linux/audit.h>
+ #include <linux/nsproxy.h>
++#include <linux/vs_base.h>
++#include <linux/vserver/global.h>
+
+ #include <asm/unistd.h>
+
+@@ -73,6 +75,7 @@ static struct ipc_namespace *clone_ipc_n
+ goto err_shm;
+
+ kref_init(&ns->kref);
++ atomic_inc(&vs_global_ipc_ns);
+ return ns;
+
+ err_shm:
+@@ -142,6 +145,7 @@ void free_ipc_ns(struct kref *kref)
+ sem_exit_ns(ns);
+ msg_exit_ns(ns);
+ shm_exit_ns(ns);
++ atomic_dec(&vs_global_ipc_ns);
+ kfree(ns);
+ }
+ #endif
+diff -NurpP --minimal linux-2.6.20.4/kernel/Makefile linux-2.6.20.4-vs2.2.0-rc20/kernel/Makefile
+--- linux-2.6.20.4/kernel/Makefile 2007-02-06 03:01:55 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/Makefile 2007-02-06 03:05:22 +0100
+@@ -10,6 +10,8 @@ obj-y = sched.o fork.o exec_domain.o
+ kthread.o wait.o kfifo.o sys_ni.o posix-cpu-timers.o mutex.o \
+ hrtimer.o rwsem.o latency.o nsproxy.o srcu.o
+
++obj-y += vserver/
++
+ obj-$(CONFIG_STACKTRACE) += stacktrace.o
+ obj-y += time/
+ obj-$(CONFIG_DEBUG_MUTEXES) += mutex-debug.o
+diff -NurpP --minimal linux-2.6.20.4/kernel/capability.c linux-2.6.20.4-vs2.2.0-rc20/kernel/capability.c
+--- linux-2.6.20.4/kernel/capability.c 2006-11-30 21:19:43 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/capability.c 2007-02-06 03:05:22 +0100
+@@ -12,6 +12,7 @@
+ #include <linux/module.h>
+ #include <linux/security.h>
+ #include <linux/syscalls.h>
++#include <linux/vs_context.h>
+ #include <asm/uaccess.h>
+
+ unsigned securebits = SECUREBITS_DEFAULT; /* systemwide security settings */
+@@ -244,8 +245,12 @@ int __capable(struct task_struct *t, int
+ }
+ EXPORT_SYMBOL(__capable);
+
++#include <linux/vserver/base.h>
+ int capable(int cap)
+ {
++ /* here for now so we don't require task locking */
++ if (vs_check_bit(VXC_CAP_MASK, cap) && !vx_mcaps(1L << cap))
++ return 0;
+ return __capable(current, cap);
+ }
+ EXPORT_SYMBOL(capable);
+diff -NurpP --minimal linux-2.6.20.4/kernel/compat.c linux-2.6.20.4-vs2.2.0-rc20/kernel/compat.c
+--- linux-2.6.20.4/kernel/compat.c 2006-11-30 21:19:43 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/compat.c 2007-02-06 03:05:22 +0100
+@@ -846,7 +846,7 @@ asmlinkage long compat_sys_time(compat_t
+ compat_time_t i;
+ struct timeval tv;
+
+- do_gettimeofday(&tv);
++ vx_gettimeofday(&tv);
+ i = tv.tv_sec;
+
+ if (tloc) {
+@@ -870,7 +870,7 @@ asmlinkage long compat_sys_stime(compat_
+ if (err)
+ return err;
+
+- do_settimeofday(&tv);
++ vx_settimeofday(&tv);
+ return 0;
+ }
+
+diff -NurpP --minimal linux-2.6.20.4/kernel/exit.c linux-2.6.20.4-vs2.2.0-rc20/kernel/exit.c
+--- linux-2.6.20.4/kernel/exit.c 2007-02-06 03:01:55 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/exit.c 2007-02-24 21:13:02 +0100
+@@ -42,6 +42,11 @@
+ #include <linux/audit.h> /* for audit_free() */
+ #include <linux/resource.h>
+ #include <linux/blkdev.h>
++#include <linux/vs_limit.h>
++#include <linux/vs_context.h>
++#include <linux/vs_network.h>
++#include <linux/vs_pid.h>
++#include <linux/vserver/global.h>
+
+ #include <asm/uaccess.h>
+ #include <asm/unistd.h>
+@@ -433,9 +438,11 @@ static void close_files(struct files_str
+ struct file * file = xchg(&fdt->fd[i], NULL);
+ if (file)
+ filp_close(file, files);
++ vx_openfd_dec(i);
+ }
+ i++;
+ set >>= 1;
++ cond_resched();
+ }
+ }
+ }
+@@ -515,6 +522,7 @@ static inline void __put_fs_struct(struc
+ dput(fs->altroot);
+ mntput(fs->altrootmnt);
+ }
++ atomic_dec(&vs_global_fs);
+ kmem_cache_free(fs_cachep, fs);
+ }
+ }
+@@ -586,6 +594,14 @@ static void exit_mm(struct task_struct *
+ static inline void
+ choose_new_parent(struct task_struct *p, struct task_struct *reaper)
+ {
++ /* check for reaper context */
++ vxwprintk((p->xid != reaper->xid) && (reaper != child_reaper(p)),
++ "rogue reaper: %p[%d,#%u] <> %p[%d,#%u]",
++ p, p->pid, p->xid, reaper, reaper->pid, reaper->xid);
++
++ if (p == reaper)
++ reaper = vx_child_reaper(p);
++
+ /*
+ * Make sure we're not reparenting to ourselves and that
+ * the parent is not a zombie.
+@@ -677,7 +693,8 @@ forget_original_parent(struct task_struc
+ do {
+ reaper = next_thread(reaper);
+ if (reaper == father) {
+- reaper = child_reaper(father);
++ // reaper = child_reaper(father);
++ reaper = vx_child_reaper(father);
+ break;
+ }
+ } while (reaper->exit_state);
+@@ -939,7 +956,11 @@ fastcall NORET_TYPE void do_exit(long co
+ tsk->exit_code = code;
+ proc_exit_connector(tsk);
+ exit_task_namespaces(tsk);
++ // ns = exit_task_namespaces_early(tsk);
++ /* needs to stay before exit_notify() */
++ exit_vx_info_early(tsk, code);
+ exit_notify(tsk);
++ // exit_task_namespaces(tsk, ns);
+ #ifdef CONFIG_NUMA
+ mpol_free(tsk->mempolicy);
+ tsk->mempolicy = NULL;
+@@ -963,6 +984,10 @@ fastcall NORET_TYPE void do_exit(long co
+ if (tsk->splice_pipe)
+ __free_pipe_info(tsk->splice_pipe);
+
++ /* needs to stay after exit_notify() */
++ exit_vx_info(tsk, code);
++ exit_nx_info(tsk);
++
+ preempt_disable();
+ /* causes final put_task_struct in finish_task_switch(). */
+ tsk->state = TASK_DEAD;
+diff -NurpP --minimal linux-2.6.20.4/kernel/fork.c linux-2.6.20.4-vs2.2.0-rc20/kernel/fork.c
+--- linux-2.6.20.4/kernel/fork.c 2007-03-25 00:56:55 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/fork.c 2007-03-25 00:57:02 +0100
+@@ -49,6 +49,11 @@
+ #include <linux/delayacct.h>
+ #include <linux/taskstats_kern.h>
+ #include <linux/random.h>
++#include <linux/vs_context.h>
++#include <linux/vs_network.h>
++#include <linux/vs_limit.h>
++#include <linux/vs_memory.h>
++#include <linux/vserver/global.h>
+
+ #include <asm/pgtable.h>
+ #include <asm/pgalloc.h>
+@@ -108,6 +113,8 @@ void free_task(struct task_struct *tsk)
+ {
+ free_thread_info(tsk->thread_info);
+ rt_mutex_debug_task_free(tsk);
++ clr_vx_info(&tsk->vx_info);
++ clr_nx_info(&tsk->nx_info);
+ free_task_struct(tsk);
+ }
+ EXPORT_SYMBOL(free_task);
+@@ -215,6 +222,8 @@ static inline int dup_mmap(struct mm_str
+ mm->free_area_cache = oldmm->mmap_base;
+ mm->cached_hole_size = ~0UL;
+ mm->map_count = 0;
++ __set_mm_counter(mm, file_rss, 0);
++ __set_mm_counter(mm, anon_rss, 0);
+ cpus_clear(mm->cpu_vm_mask);
+ mm->mm_rb = RB_ROOT;
+ rb_link = &mm->mm_rb.rb_node;
+@@ -226,7 +235,7 @@ static inline int dup_mmap(struct mm_str
+
+ if (mpnt->vm_flags & VM_DONTCOPY) {
+ long pages = vma_pages(mpnt);
+- mm->total_vm -= pages;
++ vx_vmpages_sub(mm, pages);
+ vm_stat_account(mm, mpnt->vm_flags, mpnt->vm_file,
+ -pages);
+ continue;
+@@ -333,8 +342,8 @@ static struct mm_struct * mm_init(struct
+ INIT_LIST_HEAD(&mm->mmlist);
+ mm->core_waiters = 0;
+ mm->nr_ptes = 0;
+- set_mm_counter(mm, file_rss, 0);
+- set_mm_counter(mm, anon_rss, 0);
++ __set_mm_counter(mm, file_rss, 0);
++ __set_mm_counter(mm, anon_rss, 0);
+ spin_lock_init(&mm->page_table_lock);
+ rwlock_init(&mm->ioctx_list_lock);
+ mm->ioctx_list = NULL;
+@@ -343,6 +352,7 @@ static struct mm_struct * mm_init(struct
+
+ if (likely(!mm_alloc_pgd(mm))) {
+ mm->def_flags = 0;
++ set_vx_info(&mm->mm_vx_info, current->vx_info);
+ return mm;
+ }
+ free_mm(mm);
+@@ -374,6 +384,7 @@ void fastcall __mmdrop(struct mm_struct
+ BUG_ON(mm == &init_mm);
+ mm_free_pgd(mm);
+ destroy_context(mm);
++ clr_vx_info(&mm->mm_vx_info);
+ free_mm(mm);
+ }
+
+@@ -488,6 +499,7 @@ static struct mm_struct *dup_mm(struct t
+ goto fail_nomem;
+
+ memcpy(mm, oldmm, sizeof(*mm));
++ mm->mm_vx_info = NULL;
+
+ /* Initializing for Swap token stuff */
+ mm->token_priority = 0;
+@@ -519,6 +531,7 @@ fail_nocontext:
+ * If init_new_context() failed, we cannot use mmput() to free the mm
+ * because it calls destroy_context()
+ */
++ clr_vx_info(&mm->mm_vx_info);
+ mm_free_pgd(mm);
+ free_mm(mm);
+ return NULL;
+@@ -589,6 +602,7 @@ static inline struct fs_struct *__copy_f
+ fs->altroot = NULL;
+ }
+ read_unlock(&old->lock);
++ atomic_inc(&vs_global_fs);
+ }
+ return fs;
+ }
+@@ -707,6 +721,8 @@ static struct files_struct *dup_fd(struc
+ struct file *f = *old_fds++;
+ if (f) {
+ get_file(f);
++ /* TODO: sum it first for check and performance */
++ vx_openfd_inc(open_files - i);
+ } else {
+ /*
+ * The fd may be claimed in the fd bitmap but not yet
+@@ -958,6 +974,8 @@ static struct task_struct *copy_process(
+ {
+ int retval;
+ struct task_struct *p = NULL;
++ struct vx_info *vxi;
++ struct nx_info *nxi;
+
+ if ((clone_flags & (CLONE_NEWNS|CLONE_FS)) == (CLONE_NEWNS|CLONE_FS))
+ return ERR_PTR(-EINVAL);
+@@ -992,12 +1010,30 @@ static struct task_struct *copy_process(
+ DEBUG_LOCKS_WARN_ON(!p->hardirqs_enabled);
+ DEBUG_LOCKS_WARN_ON(!p->softirqs_enabled);
+ #endif
++ init_vx_info(&p->vx_info, current->vx_info);
++ init_nx_info(&p->nx_info, current->nx_info);
++
++ /* check vserver memory */
++ if (p->mm && !(clone_flags & CLONE_VM)) {
++ if (vx_vmpages_avail(p->mm, p->mm->total_vm))
++ vx_pages_add(p->vx_info, RLIMIT_AS, p->mm->total_vm);
++ else
++ goto bad_fork_free;
++ }
++ if (p->mm && vx_flags(VXF_FORK_RSS, 0)) {
++ if (!vx_rss_avail(p->mm, get_mm_counter(p->mm, file_rss)))
++ goto bad_fork_cleanup_vm;
++ }
++
+ retval = -EAGAIN;
++ if (!vx_nproc_avail(1))
++ goto bad_fork_cleanup_vm;
++
+ if (atomic_read(&p->user->processes) >=
+ p->signal->rlim[RLIMIT_NPROC].rlim_cur) {
+ if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RESOURCE) &&
+ p->user != &root_user)
+- goto bad_fork_free;
++ goto bad_fork_cleanup_vm;
+ }
+
+ atomic_inc(&p->user->__count);
+@@ -1260,6 +1296,18 @@ static struct task_struct *copy_process(
+
+ total_forks++;
+ spin_unlock(&current->sighand->siglock);
++
++ /* p is copy of current */
++ vxi = p->vx_info;
++ if (vxi) {
++ claim_vx_info(vxi, p);
++ atomic_inc(&vxi->cvirt.nr_threads);
++ atomic_inc(&vxi->cvirt.total_forks);
++ vx_nproc_inc(p);
++ }
++ nxi = p->nx_info;
++ if (nxi)
++ claim_nx_info(nxi, p);
+ write_unlock_irq(&tasklist_lock);
+ proc_fork_connector(p);
+ return p;
+@@ -1301,6 +1349,9 @@ bad_fork_cleanup_count:
+ put_group_info(p->group_info);
+ atomic_dec(&p->user->processes);
+ free_uid(p->user);
++bad_fork_cleanup_vm:
++ if (p->mm && !(clone_flags & CLONE_VM))
++ vx_pages_sub(p->vx_info, RLIMIT_AS, p->mm->total_vm);
+ bad_fork_free:
+ free_task(p);
+ fork_out:
+@@ -1361,6 +1412,15 @@ long do_fork(unsigned long clone_flags,
+
+ if (!pid)
+ return -EAGAIN;
++
++ /* kernel threads are host only */
++ if ((clone_flags & CLONE_KTHREAD) && !vx_check(0, VS_ADMIN)) {
++ vxwprintk(1, "xid=%d tried to spawn a kernel thread.",
++ vx_current_xid());
++ free_pid(pid);
++ return -EPERM;
++ }
++
+ nr = pid->nr;
+ if (unlikely(current->ptrace)) {
+ trace = fork_traceflag (clone_flags);
+diff -NurpP --minimal linux-2.6.20.4/kernel/kthread.c linux-2.6.20.4-vs2.2.0-rc20/kernel/kthread.c
+--- linux-2.6.20.4/kernel/kthread.c 2007-02-06 03:01:55 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/kthread.c 2007-02-06 03:05:22 +0100
+@@ -126,7 +126,7 @@ static void keventd_create_kthread(struc
+ } else {
+ wait_for_completion(&create->started);
+ read_lock(&tasklist_lock);
+- create->result = find_task_by_pid(pid);
++ create->result = find_task_by_real_pid(pid);
+ read_unlock(&tasklist_lock);
+ }
+ complete(&create->done);
+diff -NurpP --minimal linux-2.6.20.4/kernel/nsproxy.c linux-2.6.20.4-vs2.2.0-rc20/kernel/nsproxy.c
+--- linux-2.6.20.4/kernel/nsproxy.c 2007-02-06 03:01:55 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/nsproxy.c 2007-03-10 18:02:51 +0100
+@@ -20,14 +20,10 @@
+ #include <linux/mnt_namespace.h>
+ #include <linux/utsname.h>
+ #include <linux/pid_namespace.h>
++#include <linux/vserver/global.h>
+
+ struct nsproxy init_nsproxy = INIT_NSPROXY(init_nsproxy);
+
+-static inline void get_nsproxy(struct nsproxy *ns)
+-{
+- atomic_inc(&ns->count);
+-}
+-
+ void get_task_namespaces(struct task_struct *tsk)
+ {
+ struct nsproxy *ns = tsk->nsproxy;
+@@ -48,6 +44,7 @@ static inline struct nsproxy *clone_name
+ ns = kmemdup(orig, sizeof(struct nsproxy), GFP_KERNEL);
+ if (ns)
+ atomic_set(&ns->count, 1);
++ atomic_inc(&vs_global_nsproxy);
+ return ns;
+ }
+
+@@ -145,5 +142,6 @@ void free_nsproxy(struct nsproxy *ns)
+ put_ipc_ns(ns->ipc_ns);
+ if (ns->pid_ns)
+ put_pid_ns(ns->pid_ns);
++ atomic_dec(&vs_global_nsproxy);
+ kfree(ns);
+ }
+diff -NurpP --minimal linux-2.6.20.4/kernel/pid.c linux-2.6.20.4-vs2.2.0-rc20/kernel/pid.c
+--- linux-2.6.20.4/kernel/pid.c 2007-02-06 03:01:56 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/pid.c 2007-02-24 21:13:02 +0100
+@@ -27,6 +27,7 @@
+ #include <linux/bootmem.h>
+ #include <linux/hash.h>
+ #include <linux/pid_namespace.h>
++#include <linux/vs_pid.h>
+
+ #define pid_hashfn(nr) hash_long((unsigned long)nr, pidhash_shift)
+ static struct hlist_head *pid_hash;
+@@ -290,6 +291,9 @@ void fastcall transfer_pid(struct task_s
+ struct task_struct * fastcall pid_task(struct pid *pid, enum pid_type type)
+ {
+ struct task_struct *result = NULL;
++
++ if (type == PIDTYPE_REALPID)
++ type = PIDTYPE_PID;
+ if (pid) {
+ struct hlist_node *first;
+ first = rcu_dereference(pid->tasks[type].first);
+@@ -304,7 +308,17 @@ struct task_struct * fastcall pid_task(s
+ */
+ struct task_struct *find_task_by_pid_type(int type, int nr)
+ {
+- return pid_task(find_pid(nr), type);
++ struct task_struct *task;
++
++ if (type == PIDTYPE_PID)
++ nr = vx_rmap_pid(nr);
++
++ task = pid_task(find_pid(nr), type);
++ if (task && (type != PIDTYPE_REALPID) &&
++ /* maybe VS_WATCH_P in the future? */
++ !vx_check(task->xid, VS_WATCH|VS_IDENT))
++ return NULL;
++ return task;
+ }
+
+ EXPORT_SYMBOL(find_task_by_pid_type);
+diff -NurpP --minimal linux-2.6.20.4/kernel/posix-timers.c linux-2.6.20.4-vs2.2.0-rc20/kernel/posix-timers.c
+--- linux-2.6.20.4/kernel/posix-timers.c 2007-02-06 03:01:56 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/posix-timers.c 2007-03-10 18:02:51 +0100
+@@ -48,6 +48,7 @@
+ #include <linux/wait.h>
+ #include <linux/workqueue.h>
+ #include <linux/module.h>
++#include <linux/vs_context.h>
+
+ /*
+ * Management arrays for POSIX timers. Timers are kept in slab memory
+@@ -298,6 +299,10 @@ void do_schedule_next_timer(struct sigin
+
+ int posix_timer_event(struct k_itimer *timr,int si_private)
+ {
++ struct vx_info_save vxis;
++ int ret;
++
++ enter_vx_info(task_get_vx_info(timr->it_process), &vxis);
+ memset(&timr->sigq->info, 0, sizeof(siginfo_t));
+ timr->sigq->info.si_sys_private = si_private;
+ /* Send signal to the process that owns this timer.*/
+@@ -310,11 +315,11 @@ int posix_timer_event(struct k_itimer *t
+
+ if (timr->it_sigev_notify & SIGEV_THREAD_ID) {
+ struct task_struct *leader;
+- int ret = send_sigqueue(timr->it_sigev_signo, timr->sigq,
+- timr->it_process);
+
++ ret = send_sigqueue(timr->it_sigev_signo, timr->sigq,
++ timr->it_process);
+ if (likely(ret >= 0))
+- return ret;
++ goto out;
+
+ timr->it_sigev_notify = SIGEV_SIGNAL;
+ leader = timr->it_process->group_leader;
+@@ -322,8 +327,12 @@ int posix_timer_event(struct k_itimer *t
+ timr->it_process = leader;
+ }
+
+- return send_group_sigqueue(timr->it_sigev_signo, timr->sigq,
++ ret = send_group_sigqueue(timr->it_sigev_signo, timr->sigq,
+ timr->it_process);
++out:
++ leave_vx_info(&vxis);
++ put_vx_info(vxis.vxi);
++ return ret;
+ }
+ EXPORT_SYMBOL_GPL(posix_timer_event);
+
+@@ -372,7 +381,7 @@ static struct task_struct * good_sigeven
+ struct task_struct *rtn = current->group_leader;
+
+ if ((event->sigev_notify & SIGEV_THREAD_ID ) &&
+- (!(rtn = find_task_by_pid(event->sigev_notify_thread_id)) ||
++ (!(rtn = find_task_by_real_pid(event->sigev_notify_thread_id)) ||
+ rtn->tgid != current->tgid ||
+ (event->sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_SIGNAL))
+ return NULL;
+diff -NurpP --minimal linux-2.6.20.4/kernel/printk.c linux-2.6.20.4-vs2.2.0-rc20/kernel/printk.c
+--- linux-2.6.20.4/kernel/printk.c 2007-02-06 03:01:56 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/printk.c 2007-02-06 03:05:22 +0100
+@@ -32,6 +32,7 @@
+ #include <linux/bootmem.h>
+ #include <linux/syscalls.h>
+ #include <linux/jiffies.h>
++#include <linux/vs_cvirt.h>
+
+ #include <asm/uaccess.h>
+
+@@ -183,18 +184,13 @@ int do_syslog(int type, char __user *buf
+ unsigned long i, j, limit, count;
+ int do_clear = 0;
+ char c;
+- int error = 0;
++ int error;
+
+ error = security_syslog(type);
+ if (error)
+ return error;
+
+- switch (type) {
+- case 0: /* Close log */
+- break;
+- case 1: /* Open log */
+- break;
+- case 2: /* Read from log */
++ if ((type >= 2) && (type <= 4)) {
+ error = -EINVAL;
+ if (!buf || len < 0)
+ goto out;
+@@ -205,6 +201,16 @@ int do_syslog(int type, char __user *buf
+ error = -EFAULT;
+ goto out;
+ }
++ }
++ if (!vx_check(0, VS_ADMIN|VS_WATCH))
++ return vx_do_syslog(type, buf, len);
++
++ switch (type) {
++ case 0: /* Close log */
++ break;
++ case 1: /* Open log */
++ break;
++ case 2: /* Read from log */
+ error = wait_event_interruptible(log_wait,
+ (log_start - log_end));
+ if (error)
+@@ -229,16 +235,6 @@ int do_syslog(int type, char __user *buf
+ do_clear = 1;
+ /* FALL THRU */
+ case 3: /* Read last kernel messages */
+- error = -EINVAL;
+- if (!buf || len < 0)
+- goto out;
+- error = 0;
+- if (!len)
+- goto out;
+- if (!access_ok(VERIFY_WRITE, buf, len)) {
+- error = -EFAULT;
+- goto out;
+- }
+ count = len;
+ if (count > log_buf_len)
+ count = log_buf_len;
+diff -NurpP --minimal linux-2.6.20.4/kernel/ptrace.c linux-2.6.20.4-vs2.2.0-rc20/kernel/ptrace.c
+--- linux-2.6.20.4/kernel/ptrace.c 2006-11-30 21:19:44 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/ptrace.c 2007-02-06 03:05:22 +0100
+@@ -18,6 +18,7 @@
+ #include <linux/ptrace.h>
+ #include <linux/security.h>
+ #include <linux/signal.h>
++#include <linux/vs_context.h>
+
+ #include <asm/pgtable.h>
+ #include <asm/uaccess.h>
+@@ -144,6 +145,11 @@ static int may_attach(struct task_struct
+ dumpable = task->mm->dumpable;
+ if (!dumpable && !capable(CAP_SYS_PTRACE))
+ return -EPERM;
++ if (!vx_check(task->xid, VS_ADMIN_P|VS_IDENT))
++ return -EPERM;
++ if (!vx_check(task->xid, VS_IDENT) &&
++ !task_vx_flags(task, VXF_STATE_ADMIN, 0))
++ return -EACCES;
+
+ return security_ptrace(current, task);
+ }
+@@ -468,6 +474,10 @@ asmlinkage long sys_ptrace(long request,
+ goto out;
+ }
+
++ ret = -EPERM;
++ if (!vx_check(vx_task_xid(child), VS_WATCH_P|VS_IDENT))
++ goto out_put_task_struct;
++
+ if (request == PTRACE_ATTACH) {
+ ret = ptrace_attach(child);
+ goto out_put_task_struct;
+diff -NurpP --minimal linux-2.6.20.4/kernel/sched.c linux-2.6.20.4-vs2.2.0-rc20/kernel/sched.c
+--- linux-2.6.20.4/kernel/sched.c 2007-03-10 20:34:01 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/sched.c 2007-03-10 18:57:30 +0100
+@@ -55,6 +55,8 @@
+ #include <asm/tlb.h>
+
+ #include <asm/unistd.h>
++#include <linux/vs_sched.h>
++#include <linux/vs_cvirt.h>
+
+ /*
+ * Convert user-nice values [ -20 ... 0 ... 19 ]
+@@ -245,6 +247,16 @@ struct rq {
+ struct task_struct *migration_thread;
+ struct list_head migration_queue;
+ #endif
++ unsigned long norm_time;
++ unsigned long idle_time;
++#ifdef CONFIG_VSERVER_IDLETIME
++ int idle_skip;
++#endif
++#ifdef CONFIG_VSERVER_HARDCPU
++ struct list_head hold_queue;
++ unsigned long nr_onhold;
++ int idle_tokens;
++#endif
+
+ #ifdef CONFIG_SCHEDSTATS
+ /* latency stats */
+@@ -677,6 +689,7 @@ sched_info_switch(struct task_struct *pr
+ */
+ static void dequeue_task(struct task_struct *p, struct prio_array *array)
+ {
++ BUG_ON(p->state & TASK_ONHOLD);
+ array->nr_active--;
+ list_del(&p->run_list);
+ if (list_empty(array->queue + p->prio))
+@@ -685,6 +698,7 @@ static void dequeue_task(struct task_str
+
+ static void enqueue_task(struct task_struct *p, struct prio_array *array)
+ {
++ BUG_ON(p->state & TASK_ONHOLD);
+ sched_info_queued(p);
+ list_add_tail(&p->run_list, array->queue + p->prio);
+ __set_bit(p->prio, array->bitmap);
+@@ -698,12 +712,14 @@ static void enqueue_task(struct task_str
+ */
+ static void requeue_task(struct task_struct *p, struct prio_array *array)
+ {
++ BUG_ON(p->state & TASK_ONHOLD);
+ list_move_tail(&p->run_list, array->queue + p->prio);
+ }
+
+ static inline void
+ enqueue_task_head(struct task_struct *p, struct prio_array *array)
+ {
++ BUG_ON(p->state & TASK_ONHOLD);
+ list_add(&p->run_list, array->queue + p->prio);
+ __set_bit(p->prio, array->bitmap);
+ array->nr_active++;
+@@ -732,6 +748,10 @@ static inline int __normal_prio(struct t
+ bonus = CURRENT_BONUS(p) - MAX_BONUS / 2;
+
+ prio = p->static_prio - bonus;
++
++ /* adjust effective priority */
++ prio = vx_adjust_prio(p, prio, MAX_USER_PRIO);
++
+ if (prio < MAX_RT_PRIO)
+ prio = MAX_RT_PRIO;
+ if (prio > MAX_PRIO-1)
+@@ -841,6 +861,9 @@ static int effective_prio(struct task_st
+ return p->prio;
+ }
+
++#include "sched_mon.h"
++
++
+ /*
+ * __activate_task - move a task to the runqueue.
+ */
+@@ -850,6 +873,7 @@ static void __activate_task(struct task_
+
+ if (batch_task(p))
+ target = rq->expired;
++ vxm_activate_task(p, rq);
+ enqueue_task(p, target);
+ inc_nr_running(p, rq);
+ }
+@@ -859,6 +883,7 @@ static void __activate_task(struct task_
+ */
+ static inline void __activate_idle_task(struct task_struct *p, struct rq *rq)
+ {
++ vxm_activate_idle(p, rq);
+ enqueue_task_head(p, rq->active);
+ inc_nr_running(p, rq);
+ }
+@@ -993,19 +1018,30 @@ static void activate_task(struct task_st
+ }
+ p->timestamp = now;
+ out:
++ vx_activate_task(p);
+ __activate_task(p, rq);
+ }
+
+ /*
+- * deactivate_task - remove a task from the runqueue.
++ * __deactivate_task - remove a task from the runqueue.
+ */
+-static void deactivate_task(struct task_struct *p, struct rq *rq)
++static void __deactivate_task(struct task_struct *p, struct rq *rq)
+ {
+ dec_nr_running(p, rq);
+ dequeue_task(p, p->array);
++ vxm_deactivate_task(p, rq);
+ p->array = NULL;
+ }
+
++static inline
++void deactivate_task(struct task_struct *p, struct rq *rq)
++{
++ vx_deactivate_task(p);
++ __deactivate_task(p, rq);
++}
++
++#include "sched_hard.h"
++
+ /*
+ * resched_task - mark a task 'to be rescheduled now'.
+ *
+@@ -1081,6 +1117,7 @@ migrate_task(struct task_struct *p, int
+ {
+ struct rq *rq = task_rq(p);
+
++ vxm_migrate_task(p, rq, dest_cpu);
+ /*
+ * If the task is not on a runqueue (and not running), then
+ * it is sufficient to simply update the task's cpu field.
+@@ -1409,6 +1446,12 @@ static int try_to_wake_up(struct task_st
+
+ rq = task_rq_lock(p, &flags);
+ old_state = p->state;
++
++ /* we need to unhold suspended tasks */
++ if (old_state & TASK_ONHOLD) {
++ vx_unhold_task(p, rq);
++ old_state = p->state;
++ }
+ if (!(old_state & state))
+ goto out;
+
+@@ -1516,6 +1559,7 @@ out_activate:
+ #endif /* CONFIG_SMP */
+ if (old_state == TASK_UNINTERRUPTIBLE) {
+ rq->nr_uninterruptible--;
++ vx_uninterruptible_dec(p);
+ /*
+ * Tasks on involuntary sleep don't earn
+ * sleep_avg beyond just interactive state.
+@@ -1567,7 +1611,7 @@ int fastcall wake_up_state(struct task_s
+ return try_to_wake_up(p, state, 0);
+ }
+
+-static void task_running_tick(struct rq *rq, struct task_struct *p);
++static void task_running_tick(struct rq *rq, struct task_struct *p, int cpu);
+ /*
+ * Perform scheduler related setup for a newly forked process p.
+ * p is forked by current.
+@@ -1628,7 +1672,7 @@ void fastcall sched_fork(struct task_str
+ * runqueue lock is not a problem.
+ */
+ current->time_slice = 1;
+- task_running_tick(cpu_rq(cpu), current);
++ task_running_tick(cpu_rq(cpu), current, cpu);
+ }
+ local_irq_enable();
+ put_cpu();
+@@ -1663,6 +1707,7 @@ void fastcall wake_up_new_task(struct ta
+
+ p->prio = effective_prio(p);
+
++ vx_activate_task(p);
+ if (likely(cpu == this_cpu)) {
+ if (!(clone_flags & CLONE_VM)) {
+ /*
+@@ -1674,6 +1719,7 @@ void fastcall wake_up_new_task(struct ta
+ __activate_task(p, rq);
+ else {
+ p->prio = current->prio;
++ BUG_ON(p->state & TASK_ONHOLD);
+ p->normal_prio = current->normal_prio;
+ list_add_tail(&p->run_list, &current->run_list);
+ p->array = current->array;
+@@ -3065,13 +3111,16 @@ static inline int expired_starving(struc
+ void account_user_time(struct task_struct *p, cputime_t cputime)
+ {
+ struct cpu_usage_stat *cpustat = &kstat_this_cpu.cpustat;
++ struct vx_info *vxi = p->vx_info; /* p is _always_ current */
+ cputime64_t tmp;
++ int nice = (TASK_NICE(p) > 0);
+
+ p->utime = cputime_add(p->utime, cputime);
++ vx_account_user(vxi, cputime, nice);
+
+ /* Add user time to cpustat. */
+ tmp = cputime_to_cputime64(cputime);
+- if (TASK_NICE(p) > 0)
++ if (nice)
+ cpustat->nice = cputime64_add(cpustat->nice, tmp);
+ else
+ cpustat->user = cputime64_add(cpustat->user, tmp);
+@@ -3087,10 +3136,12 @@ void account_system_time(struct task_str
+ cputime_t cputime)
+ {
+ struct cpu_usage_stat *cpustat = &kstat_this_cpu.cpustat;
++ struct vx_info *vxi = p->vx_info; /* p is _always_ current */
+ struct rq *rq = this_rq();
+ cputime64_t tmp;
+
+ p->stime = cputime_add(p->stime, cputime);
++ vx_account_system(vxi, cputime, (p == rq->idle));
+
+ /* Add system time to cpustat. */
+ tmp = cputime_to_cputime64(cputime);
+@@ -3129,7 +3180,7 @@ void account_steal_time(struct task_stru
+ cpustat->steal = cputime64_add(cpustat->steal, tmp);
+ }
+
+-static void task_running_tick(struct rq *rq, struct task_struct *p)
++static void task_running_tick(struct rq *rq, struct task_struct *p, int cpu)
+ {
+ if (p->array != rq->active) {
+ /* Task has expired but was not scheduled yet */
+@@ -3159,7 +3210,7 @@ static void task_running_tick(struct rq
+ }
+ goto out_unlock;
+ }
+- if (!--p->time_slice) {
++ if (vx_need_resched(p, --p->time_slice, cpu)) {
+ dequeue_task(p, rq->active);
+ set_tsk_need_resched(p);
+ p->prio = effective_prio(p);
+@@ -3219,12 +3270,14 @@ void scheduler_tick(void)
+ struct rq *rq = cpu_rq(cpu);
+
+ update_cpu_clock(p, rq, now);
++ vxm_sync(now, cpu);
+
+- if (p == rq->idle)
++ if (p == rq->idle) {
+ /* Task on the idle queue */
+ wake_priority_sleeper(rq);
+- else
+- task_running_tick(rq, p);
++ vx_idle_resched(rq);
++ } else
++ task_running_tick(rq, p, cpu);
+ #ifdef CONFIG_SMP
+ update_load(rq);
+ if (time_after_eq(jiffies, rq->next_balance))
+@@ -3476,14 +3529,25 @@ need_resched_nonpreemptible:
+ unlikely(signal_pending(prev))))
+ prev->state = TASK_RUNNING;
+ else {
+- if (prev->state == TASK_UNINTERRUPTIBLE)
++ if (prev->state == TASK_UNINTERRUPTIBLE) {
+ rq->nr_uninterruptible++;
++ vx_uninterruptible_inc(prev);
++ }
+ deactivate_task(prev, rq);
+ }
+ }
+
+ cpu = smp_processor_id();
++ vx_set_rq_time(rq, jiffies);
++try_unhold:
++ vx_try_unhold(rq, cpu);
++pick_next:
++
+ if (unlikely(!rq->nr_running)) {
++ /* can we skip idle time? */
++ if (vx_try_skip(rq, cpu))
++ goto try_unhold;
++
+ idle_balance(cpu, rq);
+ if (!rq->nr_running) {
+ next = rq->idle;
+@@ -3510,6 +3574,10 @@ need_resched_nonpreemptible:
+ queue = array->queue + idx;
+ next = list_entry(queue->next, struct task_struct, run_list);
+
++ /* check before we schedule this context */
++ if (!vx_schedule(next, rq, cpu))
++ goto pick_next;
++
+ if (!rt_task(next) && interactive_sleep(next->sleep_type)) {
+ unsigned long long delta = now - next->timestamp;
+ if (unlikely((long long)(now - next->timestamp) < 0))
+@@ -4112,7 +4180,7 @@ asmlinkage long sys_nice(int increment)
+ nice = 19;
+
+ if (increment < 0 && !can_nice(current, nice))
+- return -EPERM;
++ return vx_flags(VXF_IGNEG_NICE, 0) ? 0 : -EPERM;
+
+ retval = security_task_setnice(current, nice);
+ if (retval)
+@@ -4285,6 +4353,7 @@ recheck:
+ oldprio = p->prio;
+ __setscheduler(p, policy, param->sched_priority);
+ if (array) {
++ vx_activate_task(p);
+ __activate_task(p, rq);
+ /*
+ * Reschedule if we are currently running on this runqueue and
+@@ -5072,6 +5141,7 @@ static int __migrate_task(struct task_st
+ p->timestamp = p->timestamp - rq_src->most_recent_timestamp
+ + rq_dest->most_recent_timestamp;
+ deactivate_task(p, rq_src);
++ vx_activate_task(p);
+ __activate_task(p, rq_dest);
+ if (TASK_PREEMPTS_CURR(p, rq_dest))
+ resched_task(rq_dest->curr);
+@@ -6919,7 +6989,10 @@ void __init sched_init(void)
+ INIT_LIST_HEAD(&rq->migration_queue);
+ #endif
+ atomic_set(&rq->nr_iowait, 0);
+-
++#ifdef CONFIG_VSERVER_HARDCPU
++ INIT_LIST_HEAD(&rq->hold_queue);
++ rq->nr_onhold = 0;
++#endif
+ for (j = 0; j < 2; j++) {
+ array = rq->arrays + j;
+ for (k = 0; k < MAX_PRIO; k++) {
+@@ -7002,6 +7075,7 @@ void normalize_rt_tasks(void)
+ deactivate_task(p, task_rq(p));
+ __setscheduler(p, SCHED_NORMAL, 0);
+ if (array) {
++ vx_activate_task(p);
+ __activate_task(p, task_rq(p));
+ resched_task(rq->curr);
+ }
+diff -NurpP --minimal linux-2.6.20.4/kernel/sched_hard.h linux-2.6.20.4-vs2.2.0-rc20/kernel/sched_hard.h
+--- linux-2.6.20.4/kernel/sched_hard.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/sched_hard.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,324 @@
++
++#ifdef CONFIG_VSERVER_IDLELIMIT
++
++/*
++ * vx_idle_resched - reschedule after maxidle
++ */
++static inline
++void vx_idle_resched(struct rq *rq)
++{
++ /* maybe have a better criterion for paused */
++ if (!--rq->idle_tokens && !list_empty(&rq->hold_queue))
++ set_need_resched();
++}
++
++#else /* !CONFIG_VSERVER_IDLELIMIT */
++
++#define vx_idle_resched(rq)
++
++#endif /* CONFIG_VSERVER_IDLELIMIT */
++
++
++
++#ifdef CONFIG_VSERVER_IDLETIME
++
++#define vx_set_rq_min_skip(rq, min) \
++ (rq)->idle_skip = (min)
++
++#define vx_save_min_skip(ret, min, val) \
++ __vx_save_min_skip(ret, min, val)
++
++static inline
++void __vx_save_min_skip(int ret, int *min, int val)
++{
++ if (ret > -2)
++ return;
++ if ((*min > val) || !*min)
++ *min = val;
++}
++
++static inline
++int vx_try_skip(struct rq *rq, int cpu)
++{
++ /* artificially advance time */
++ if (rq->idle_skip > 0) {
++ vxdprintk(list_empty(&rq->hold_queue),
++ "hold queue empty on cpu %d", cpu);
++ rq->idle_time += rq->idle_skip;
++ vxm_idle_skip(rq, cpu);
++ return 1;
++ }
++ return 0;
++}
++
++#else /* !CONFIG_VSERVER_IDLETIME */
++
++#define vx_set_rq_min_skip(rq, min) \
++ ({ int dummy = (min); dummy; })
++
++#define vx_save_min_skip(ret, min, val)
++
++static inline
++int vx_try_skip(struct rq *rq, int cpu)
++{
++ return 0;
++}
++
++#endif /* CONFIG_VSERVER_IDLETIME */
++
++
++
++#ifdef CONFIG_VSERVER_HARDCPU
++
++#define vx_set_rq_max_idle(rq, max) \
++ (rq)->idle_tokens = (max)
++
++#define vx_save_max_idle(ret, min, val) \
++ __vx_save_max_idle(ret, min, val)
++
++static inline
++void __vx_save_max_idle(int ret, int *min, int val)
++{
++ if (*min > val)
++ *min = val;
++}
++
++
++/*
++ * vx_hold_task - put a task on the hold queue
++ */
++static inline
++void vx_hold_task(struct task_struct *p, struct rq *rq)
++{
++ __deactivate_task(p, rq);
++ p->state |= TASK_ONHOLD;
++ /* a new one on hold */
++ rq->nr_onhold++;
++ vxm_hold_task(p, rq);
++ list_add_tail(&p->run_list, &rq->hold_queue);
++}
++
++/*
++ * vx_unhold_task - put a task back to the runqueue
++ */
++static inline
++void vx_unhold_task(struct task_struct *p, struct rq *rq)
++{
++ list_del(&p->run_list);
++ /* one less waiting */
++ rq->nr_onhold--;
++ p->state &= ~TASK_ONHOLD;
++ enqueue_task(p, rq->expired);
++ inc_nr_running(p, rq);
++ vxm_unhold_task(p, rq);
++
++ if (p->static_prio < rq->best_expired_prio)
++ rq->best_expired_prio = p->static_prio;
++}
++
++unsigned long nr_onhold(void)
++{
++ unsigned long i, sum = 0;
++
++ for_each_online_cpu(i)
++ sum += cpu_rq(i)->nr_onhold;
++
++ return sum;
++}
++
++
++
++static inline
++int __vx_tokens_avail(struct _vx_sched_pc *sched_pc)
++{
++ return sched_pc->tokens;
++}
++
++static inline
++void __vx_consume_token(struct _vx_sched_pc *sched_pc)
++{
++ sched_pc->tokens--;
++}
++
++static inline
++int vx_need_resched(struct task_struct *p, int slice, int cpu)
++{
++ struct vx_info *vxi = p->vx_info;
++
++ if (vx_info_flags(vxi, VXF_SCHED_HARD|VXF_SCHED_PRIO, 0)) {
++ struct _vx_sched_pc *sched_pc =
++ &vx_per_cpu(vxi, sched_pc, cpu);
++ int tokens;
++
++ /* maybe we can simplify that to decrement
++ the token counter unconditional? */
++
++ if ((tokens = __vx_tokens_avail(sched_pc)) > 0)
++ __vx_consume_token(sched_pc);
++
++ /* for tokens > 0, one token was consumed */
++ if (tokens < 2)
++ slice = 0;
++ }
++ vxm_need_resched(p, slice, cpu);
++ return (slice == 0);
++}
++
++
++#define vx_set_rq_time(rq, time) do { \
++ rq->norm_time = time; \
++} while (0)
++
++
++static inline
++void vx_try_unhold(struct rq *rq, int cpu)
++{
++ struct vx_info *vxi = NULL;
++ struct list_head *l, *n;
++ int maxidle = HZ;
++ int minskip = 0;
++
++ /* nothing to do? what about pause? */
++ if (list_empty(&rq->hold_queue))
++ return;
++
++ list_for_each_safe(l, n, &rq->hold_queue) {
++ int ret, delta_min[2];
++ struct _vx_sched_pc *sched_pc;
++ struct task_struct *p;
++
++ p = list_entry(l, struct task_struct, run_list);
++ /* don't bother with same context */
++ if (vxi == p->vx_info)
++ continue;
++
++ vxi = p->vx_info;
++ /* ignore paused contexts */
++ if (vx_info_flags(vxi, VXF_SCHED_PAUSE, 0))
++ continue;
++
++ sched_pc = &vx_per_cpu(vxi, sched_pc, cpu);
++
++ /* recalc tokens */
++ vxm_sched_info(sched_pc, vxi, cpu);
++ ret = vx_tokens_recalc(sched_pc,
++ &rq->norm_time, &rq->idle_time, delta_min);
++ vxm_tokens_recalc(sched_pc, rq, vxi, cpu);
++
++ if (ret > 0) {
++ /* we found a runable context */
++ vx_unhold_task(p, rq);
++ break;
++ }
++ vx_save_max_idle(ret, &maxidle, delta_min[0]);
++ vx_save_min_skip(ret, &minskip, delta_min[1]);
++ }
++ vx_set_rq_max_idle(rq, maxidle);
++ vx_set_rq_min_skip(rq, minskip);
++ vxm_rq_max_min(rq, cpu);
++}
++
++
++static inline
++int vx_schedule(struct task_struct *next, struct rq *rq, int cpu)
++{
++ struct vx_info *vxi = next->vx_info;
++ struct _vx_sched_pc *sched_pc;
++ int delta_min[2];
++ int flags, ret;
++
++ if (!vxi)
++ return 1;
++
++ flags = vxi->vx_flags;
++
++ if (unlikely(vs_check_flags(flags , VXF_SCHED_PAUSE, 0)))
++ goto put_on_hold;
++ if (!vs_check_flags(flags , VXF_SCHED_HARD|VXF_SCHED_PRIO, 0))
++ return 1;
++
++ sched_pc = &vx_per_cpu(vxi, sched_pc, cpu);
++#ifdef CONFIG_SMP
++ /* update scheduler params */
++ if (cpu_isset(cpu, vxi->sched.update)) {
++ vx_update_sched_param(&vxi->sched, sched_pc);
++ vxm_update_sched(sched_pc, vxi, cpu);
++ cpu_clear(cpu, vxi->sched.update);
++ }
++#endif
++ vxm_sched_info(sched_pc, vxi, cpu);
++ ret = vx_tokens_recalc(sched_pc,
++ &rq->norm_time, &rq->idle_time, delta_min);
++ vxm_tokens_recalc(sched_pc, rq, vxi, cpu);
++
++ if (!vs_check_flags(flags , VXF_SCHED_HARD, 0))
++ return 1;
++
++ if (unlikely(ret < 0)) {
++ vx_save_max_idle(ret, &rq->idle_tokens, delta_min[0]);
++ vx_save_min_skip(ret, &rq->idle_skip, delta_min[1]);
++ vxm_rq_max_min(rq, cpu);
++ put_on_hold:
++ vx_hold_task(next, rq);
++ return 0;
++ }
++ return 1;
++}
++
++
++#else /* CONFIG_VSERVER_HARDCPU */
++
++static inline
++void vx_hold_task(struct task_struct *p, struct rq *rq)
++{
++ return;
++}
++
++static inline
++void vx_unhold_task(struct task_struct *p, struct rq *rq)
++{
++ return;
++}
++
++unsigned long nr_onhold(void)
++{
++ return 0;
++}
++
++
++static inline
++int vx_need_resched(struct task_struct *p, int slice, int cpu)
++{
++ return (slice == 0);
++}
++
++
++#define vx_set_rq_time(rq, time)
++
++static inline
++void vx_try_unhold(struct rq *rq, int cpu)
++{
++ return;
++}
++
++static inline
++int vx_schedule(struct task_struct *next, struct rq *rq, int cpu)
++{
++ struct vx_info *vxi = next->vx_info;
++ struct _vx_sched_pc *sched_pc;
++ int delta_min[2];
++ int ret;
++
++ if (!vx_info_flags(vxi, VXF_SCHED_PRIO, 0))
++ return 1;
++
++ sched_pc = &vx_per_cpu(vxi, sched_pc, cpu);
++ vxm_sched_info(sched_pc, vxi, cpu);
++ ret = vx_tokens_recalc(sched_pc,
++ &rq->norm_time, &rq->idle_time, delta_min);
++ vxm_tokens_recalc(sched_pc, rq, vxi, cpu);
++ return 1;
++}
++
++#endif /* CONFIG_VSERVER_HARDCPU */
++
+diff -NurpP --minimal linux-2.6.20.4/kernel/sched_mon.h linux-2.6.20.4-vs2.2.0-rc20/kernel/sched_mon.h
+--- linux-2.6.20.4/kernel/sched_mon.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/sched_mon.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,200 @@
++
++#include <linux/vserver/monitor.h>
++
++#ifdef CONFIG_VSERVER_MONITOR
++
++#ifdef CONFIG_VSERVER_HARDCPU
++#define HARDCPU(x) (x)
++#else
++#define HARDCPU(x) (0)
++#endif
++
++#ifdef CONFIG_VSERVER_IDLETIME
++#define IDLETIME(x) (x)
++#else
++#define IDLETIME(x) (0)
++#endif
++
++struct _vx_mon_entry *vxm_advance(int cpu);
++
++
++static inline
++void __vxm_basic(struct _vx_mon_entry *entry, xid_t xid, int type)
++{
++ entry->type = type;
++ entry->xid = xid;
++}
++
++static inline
++void __vxm_sync(int cpu)
++{
++ struct _vx_mon_entry *entry = vxm_advance(cpu);
++
++ __vxm_basic(entry, 0, VXM_SYNC);
++ entry->ev.sec = xtime.tv_sec;
++ entry->ev.nsec = xtime.tv_nsec;
++}
++
++static inline
++void __vxm_task(struct task_struct *p, int type)
++{
++ struct _vx_mon_entry *entry = vxm_advance(task_cpu(p));
++
++ __vxm_basic(entry, p->xid, type);
++ entry->ev.tsk.pid = p->pid;
++ entry->ev.tsk.state = p->state;
++}
++
++static inline
++void __vxm_sched(struct _vx_sched_pc *s, struct vx_info *vxi, int cpu)
++{
++ struct _vx_mon_entry *entry = vxm_advance(cpu);
++
++ __vxm_basic(entry, vxi->vx_id, (VXM_SCHED | s->flags));
++ entry->sd.tokens = s->tokens;
++ entry->sd.norm_time = s->norm_time;
++ entry->sd.idle_time = s->idle_time;
++}
++
++static inline
++void __vxm_rqinfo1(struct rq *q, int cpu)
++{
++ struct _vx_mon_entry *entry = vxm_advance(cpu);
++
++ entry->type = VXM_RQINFO_1;
++ entry->xid = ((unsigned long)q >> 16) & 0xffff;
++ entry->q1.running = q->nr_running;
++ entry->q1.onhold = HARDCPU(q->nr_onhold);
++ entry->q1.iowait = atomic_read(&q->nr_iowait);
++ entry->q1.uintr = q->nr_uninterruptible;
++ entry->q1.idle_tokens = IDLETIME(q->idle_tokens);
++}
++
++static inline
++void __vxm_rqinfo2(struct rq *q, int cpu)
++{
++ struct _vx_mon_entry *entry = vxm_advance(cpu);
++
++ entry->type = VXM_RQINFO_2;
++ entry->xid = (unsigned long)q & 0xffff;
++ entry->q2.norm_time = q->norm_time;
++ entry->q2.idle_time = q->idle_time;
++ entry->q2.idle_skip = IDLETIME(q->idle_skip);
++}
++
++static inline
++void __vxm_update(struct _vx_sched_pc *s, struct vx_info *vxi, int cpu)
++{
++ struct _vx_mon_entry *entry = vxm_advance(cpu);
++
++ __vxm_basic(entry, vxi->vx_id, VXM_UPDATE);
++ entry->ev.tokens = s->tokens;
++}
++
++static inline
++void __vxm_update1(struct _vx_sched_pc *s, struct vx_info *vxi, int cpu)
++{
++ struct _vx_mon_entry *entry = vxm_advance(cpu);
++
++ __vxm_basic(entry, vxi->vx_id, VXM_UPDATE_1);
++ entry->u1.tokens_max = s->tokens_max;
++ entry->u1.fill_rate = s->fill_rate[0];
++ entry->u1.interval = s->interval[0];
++}
++
++static inline
++void __vxm_update2(struct _vx_sched_pc *s, struct vx_info *vxi, int cpu)
++{
++ struct _vx_mon_entry *entry = vxm_advance(cpu);
++
++ __vxm_basic(entry, vxi->vx_id, VXM_UPDATE_2);
++ entry->u2.tokens_min = s->tokens_min;
++ entry->u2.fill_rate = s->fill_rate[1];
++ entry->u2.interval = s->interval[1];
++}
++
++
++#define vxm_activate_task(p,q) __vxm_task(p, VXM_ACTIVATE)
++#define vxm_activate_idle(p,q) __vxm_task(p, VXM_IDLE)
++#define vxm_deactivate_task(p,q) __vxm_task(p, VXM_DEACTIVATE)
++#define vxm_hold_task(p,q) __vxm_task(p, VXM_HOLD)
++#define vxm_unhold_task(p,q) __vxm_task(p, VXM_UNHOLD)
++
++static inline
++void vxm_migrate_task(struct task_struct *p, struct rq *rq, int dest)
++{
++ __vxm_task(p, VXM_MIGRATE);
++ __vxm_rqinfo1(rq, task_cpu(p));
++ __vxm_rqinfo2(rq, task_cpu(p));
++}
++
++static inline
++void vxm_idle_skip(struct rq *rq, int cpu)
++{
++ __vxm_rqinfo1(rq, cpu);
++ __vxm_rqinfo2(rq, cpu);
++}
++
++static inline
++void vxm_need_resched(struct task_struct *p, int slice, int cpu)
++{
++ if (slice)
++ return;
++
++ __vxm_task(p, VXM_RESCHED);
++}
++
++static inline
++void vxm_sync(unsigned long now, int cpu)
++{
++ if (!CONFIG_VSERVER_MONITOR_SYNC ||
++ (now % CONFIG_VSERVER_MONITOR_SYNC))
++ return;
++
++ __vxm_sync(cpu);
++}
++
++#define vxm_sched_info(s,v,c) __vxm_sched(s,v,c)
++
++static inline
++void vxm_tokens_recalc(struct _vx_sched_pc *s, struct rq *rq,
++ struct vx_info *vxi, int cpu)
++{
++ __vxm_sched(s, vxi, cpu);
++ __vxm_rqinfo2(rq, cpu);
++}
++
++static inline
++void vxm_update_sched(struct _vx_sched_pc *s, struct vx_info *vxi, int cpu)
++{
++ __vxm_sched(s, vxi, cpu);
++ __vxm_update(s, vxi, cpu);
++ __vxm_update1(s, vxi, cpu);
++ __vxm_update2(s, vxi, cpu);
++}
++
++static inline
++void vxm_rq_max_min(struct rq *rq, int cpu)
++{
++ __vxm_rqinfo1(rq, cpu);
++ __vxm_rqinfo2(rq, cpu);
++}
++
++#else /* CONFIG_VSERVER_MONITOR */
++
++#define vxm_activate_task(t,q) do { } while (0)
++#define vxm_activate_idle(t,q) do { } while (0)
++#define vxm_deactivate_task(t,q) do { } while (0)
++#define vxm_hold_task(t,q) do { } while (0)
++#define vxm_unhold_task(t,q) do { } while (0)
++#define vxm_migrate_task(t,q,d) do { } while (0)
++#define vxm_idle_skip(q,c) do { } while (0)
++#define vxm_need_resched(t,s,c) do { } while (0)
++#define vxm_sync(s,c) do { } while (0)
++#define vxm_sched_info(s,v,c) do { } while (0)
++#define vxm_tokens_recalc(s,q,v,c) do { } while (0)
++#define vxm_update_sched(s,v,c) do { } while (0)
++#define vxm_rq_max_min(q,c) do { } while (0)
++
++#endif /* CONFIG_VSERVER_MONITOR */
++
+diff -NurpP --minimal linux-2.6.20.4/kernel/signal.c linux-2.6.20.4-vs2.2.0-rc20/kernel/signal.c
+--- linux-2.6.20.4/kernel/signal.c 2007-02-06 03:01:56 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/signal.c 2007-03-10 18:03:14 +0100
+@@ -26,6 +26,8 @@
+ #include <linux/freezer.h>
+ #include <linux/pid_namespace.h>
+ #include <linux/nsproxy.h>
++#include <linux/vs_context.h>
++#include <linux/vs_pid.h>
+
+ #include <asm/param.h>
+ #include <asm/uaccess.h>
+@@ -581,17 +583,34 @@ static int check_kill_permission(int sig
+ struct task_struct *t)
+ {
+ int error = -EINVAL;
++
+ if (!valid_signal(sig))
+ return error;
++
++ if ((info != SEND_SIG_NOINFO) &&
++ (is_si_special(info) || !SI_FROMUSER(info)))
++ goto skip;
++
++ vxdprintk(VXD_CBIT(misc, 7),
++ "check_kill_permission(%d,%p,%p[#%u,%u])",
++ sig, info, t, vx_task_xid(t), t->pid);
++
+ error = -EPERM;
+- if ((info == SEND_SIG_NOINFO || (!is_si_special(info) && SI_FROMUSER(info)))
+- && ((sig != SIGCONT) ||
++ if (((sig != SIGCONT) ||
+ (process_session(current) != process_session(t)))
+ && (current->euid ^ t->suid) && (current->euid ^ t->uid)
+ && (current->uid ^ t->suid) && (current->uid ^ t->uid)
+ && !capable(CAP_KILL))
+ return error;
+
++ error = -ESRCH;
++ if (!vx_check(vx_task_xid(t), VS_WATCH_P|VS_IDENT)) {
++ vxdprintk(current->xid || VXD_CBIT(misc, 7),
++ "signal %d[%p] xid mismatch %p[#%u,%u] xid=#%u",
++ sig, info, t, vx_task_xid(t), t->pid, current->xid);
++ return error;
++ }
++skip:
+ error = security_task_kill(t, info, sig, 0);
+ if (!error)
+ audit_signal_info(sig, t); /* Let audit system see the signal */
+@@ -1129,7 +1148,7 @@ int kill_pid_info(int sig, struct siginf
+ }
+ p = pid_task(pid, PIDTYPE_PID);
+ error = -ESRCH;
+- if (p)
++ if (p && vx_check(vx_task_xid(p), VS_IDENT))
+ error = group_send_sig_info(sig, info, p);
+ if (unlikely(acquired_tasklist_lock))
+ read_unlock(&tasklist_lock);
+@@ -1141,7 +1160,7 @@ static int kill_proc_info(int sig, struc
+ {
+ int error;
+ rcu_read_lock();
+- error = kill_pid_info(sig, info, find_pid(pid));
++ error = kill_pid_info(sig, info, find_pid(vx_rmap_pid(pid)));
+ rcu_read_unlock();
+ return error;
+ }
+@@ -1200,7 +1219,8 @@ static int kill_something_info(int sig,
+
+ read_lock(&tasklist_lock);
+ for_each_process(p) {
+- if (p->pid > 1 && p->tgid != current->tgid) {
++ if (vx_check(vx_task_xid(p), VS_ADMIN_P|VS_IDENT) &&
++ p->pid > 1 && p->tgid != current->tgid) {
+ int err = group_send_sig_info(sig, info, p);
+ ++count;
+ if (err != -EPERM)
+@@ -1890,6 +1910,11 @@ relock:
+ if (current == child_reaper(current))
+ continue;
+
++ /* virtual init is protected against user signals */
++ if ((info->si_code == SI_USER) &&
++ vx_current_initpid(current->pid))
++ continue;
++
+ if (sig_kernel_stop(signr)) {
+ /*
+ * The default action is to stop all threads in
+diff -NurpP --minimal linux-2.6.20.4/kernel/softirq.c linux-2.6.20.4-vs2.2.0-rc20/kernel/softirq.c
+--- linux-2.6.20.4/kernel/softirq.c 2007-02-06 03:01:56 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/softirq.c 2007-02-06 03:05:22 +0100
+@@ -17,6 +17,7 @@
+ #include <linux/kthread.h>
+ #include <linux/rcupdate.h>
+ #include <linux/smp.h>
++#include <linux/vs_context.h>
+
+ #include <asm/irq.h>
+ /*
+diff -NurpP --minimal linux-2.6.20.4/kernel/sys.c linux-2.6.20.4-vs2.2.0-rc20/kernel/sys.c
+--- linux-2.6.20.4/kernel/sys.c 2007-02-06 03:01:56 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/sys.c 2007-03-10 18:02:51 +0100
+@@ -33,6 +33,7 @@
+ #include <linux/compat.h>
+ #include <linux/syscalls.h>
+ #include <linux/kprobes.h>
++#include <linux/vs_pid.h>
+
+ #include <asm/uaccess.h>
+ #include <asm/io.h>
+@@ -576,7 +577,10 @@ static int set_one_prio(struct task_stru
+ goto out;
+ }
+ if (niceval < task_nice(p) && !can_nice(p, niceval)) {
+- error = -EACCES;
++ if (vx_flags(VXF_IGNEG_NICE, 0))
++ error = 0;
++ else
++ error = -EACCES;
+ goto out;
+ }
+ no_nice = security_task_setnice(p, niceval);
+@@ -628,7 +632,8 @@ asmlinkage long sys_setpriority(int whic
+ if (!who)
+ who = current->uid;
+ else
+- if ((who != current->uid) && !(user = find_user(who)))
++ if ((who != current->uid) &&
++ !(user = find_user(vx_current_xid(), who)))
+ goto out_unlock; /* No processes for this user */
+
+ do_each_thread(g, p)
+@@ -686,7 +691,8 @@ asmlinkage long sys_getpriority(int whic
+ if (!who)
+ who = current->uid;
+ else
+- if ((who != current->uid) && !(user = find_user(who)))
++ if ((who != current->uid) &&
++ !(user = find_user(vx_current_xid(), who)))
+ goto out_unlock; /* No processes for this user */
+
+ do_each_thread(g, p)
+@@ -799,6 +805,9 @@ void kernel_power_off(void)
+ machine_power_off();
+ }
+ EXPORT_SYMBOL_GPL(kernel_power_off);
++
++long vs_reboot(unsigned int, void __user *);
++
+ /*
+ * Reboot system call: for obvious reasons only root may call it,
+ * and even root needs to set up some magic numbers in the registers
+@@ -829,6 +838,9 @@ asmlinkage long sys_reboot(int magic1, i
+ if ((cmd == LINUX_REBOOT_CMD_POWER_OFF) && !pm_power_off)
+ cmd = LINUX_REBOOT_CMD_HALT;
+
++ if (!vx_check(0, VS_ADMIN|VS_WATCH))
++ return vs_reboot(cmd, arg);
++
+ lock_kernel();
+ switch (cmd) {
+ case LINUX_REBOOT_CMD_RESTART:
+@@ -1008,7 +1020,7 @@ static int set_user(uid_t new_ruid, int
+ {
+ struct user_struct *new_user;
+
+- new_user = alloc_uid(new_ruid);
++ new_user = alloc_uid(vx_current_xid(), new_ruid);
+ if (!new_user)
+ return -EAGAIN;
+
+@@ -1363,15 +1375,18 @@ asmlinkage long sys_setpgid(pid_t pid, p
+ {
+ struct task_struct *p;
+ struct task_struct *group_leader = current->group_leader;
++ pid_t rpgid;
+ int err = -EINVAL;
+
+ if (!pid)
+- pid = group_leader->pid;
++ pid = vx_map_pid(group_leader->pid);
+ if (!pgid)
+ pgid = pid;
+ if (pgid < 0)
+ return -EINVAL;
+
++ rpgid = vx_rmap_pid(pgid);
++
+ /* From this point forward we keep holding onto the tasklist lock
+ * so that our parent does not change from under us. -DaveM
+ */
+@@ -1405,20 +1420,20 @@ asmlinkage long sys_setpgid(pid_t pid, p
+
+ if (pgid != pid) {
+ struct task_struct *g =
+- find_task_by_pid_type(PIDTYPE_PGID, pgid);
++ find_task_by_pid_type(PIDTYPE_PGID, rpgid);
+
+ if (!g || process_session(g) != process_session(group_leader))
+ goto out;
+ }
+
+- err = security_task_setpgid(p, pgid);
++ err = security_task_setpgid(p, rpgid);
+ if (err)
+ goto out;
+
+- if (process_group(p) != pgid) {
++ if (process_group(p) != rpgid) {
+ detach_pid(p, PIDTYPE_PGID);
+- p->signal->pgrp = pgid;
+- attach_pid(p, PIDTYPE_PGID, pgid);
++ p->signal->pgrp = rpgid;
++ attach_pid(p, PIDTYPE_PGID, rpgid);
+ }
+
+ err = 0;
+@@ -1431,7 +1446,7 @@ out:
+ asmlinkage long sys_getpgid(pid_t pid)
+ {
+ if (!pid)
+- return process_group(current);
++ return vx_rmap_pid(process_group(current));
+ else {
+ int retval;
+ struct task_struct *p;
+@@ -1443,7 +1458,7 @@ asmlinkage long sys_getpgid(pid_t pid)
+ if (p) {
+ retval = security_task_getpgid(p);
+ if (!retval)
+- retval = process_group(p);
++ retval = vx_rmap_pid(process_group(p));
+ }
+ read_unlock(&tasklist_lock);
+ return retval;
+@@ -1795,7 +1810,7 @@ asmlinkage long sys_sethostname(char __u
+ int errno;
+ char tmp[__NEW_UTS_LEN];
+
+- if (!capable(CAP_SYS_ADMIN))
++ if (!vx_capable(CAP_SYS_ADMIN, VXC_SET_UTSNAME))
+ return -EPERM;
+ if (len < 0 || len > __NEW_UTS_LEN)
+ return -EINVAL;
+@@ -1840,7 +1855,7 @@ asmlinkage long sys_setdomainname(char _
+ int errno;
+ char tmp[__NEW_UTS_LEN];
+
+- if (!capable(CAP_SYS_ADMIN))
++ if (!vx_capable(CAP_SYS_ADMIN, VXC_SET_UTSNAME))
+ return -EPERM;
+ if (len < 0 || len > __NEW_UTS_LEN)
+ return -EINVAL;
+@@ -1907,7 +1922,7 @@ asmlinkage long sys_setrlimit(unsigned i
+ return -EINVAL;
+ old_rlim = current->signal->rlim + resource;
+ if ((new_rlim.rlim_max > old_rlim->rlim_max) &&
+- !capable(CAP_SYS_RESOURCE))
++ !vx_capable(CAP_SYS_RESOURCE, VXC_SET_RLIMIT))
+ return -EPERM;
+ if (resource == RLIMIT_NOFILE && new_rlim.rlim_max > NR_OPEN)
+ return -EPERM;
+diff -NurpP --minimal linux-2.6.20.4/kernel/sysctl.c linux-2.6.20.4-vs2.2.0-rc20/kernel/sysctl.c
+--- linux-2.6.20.4/kernel/sysctl.c 2007-02-06 03:01:56 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/sysctl.c 2007-02-06 03:05:22 +0100
+@@ -87,6 +87,7 @@ static int ngroups_max = NGROUPS_MAX;
+ #ifdef CONFIG_KMOD
+ extern char modprobe_path[];
+ #endif
++extern char vshelper_path[];
+ #ifdef CONFIG_CHR_DEV_SG
+ extern int sg_big_buff;
+ #endif
+@@ -453,6 +454,15 @@ static ctl_table kern_table[] = {
+ .strategy = &sysctl_string,
+ },
+ #endif
++ {
++ .ctl_name = KERN_VSHELPER,
++ .procname = "vshelper",
++ .data = &vshelper_path,
++ .maxlen = 256,
++ .mode = 0644,
++ .proc_handler = &proc_dostring,
++ .strategy = &sysctl_string,
++ },
+ #ifdef CONFIG_CHR_DEV_SG
+ {
+ .ctl_name = KERN_SG_BIG_BUFF,
+diff -NurpP --minimal linux-2.6.20.4/kernel/time.c linux-2.6.20.4-vs2.2.0-rc20/kernel/time.c
+--- linux-2.6.20.4/kernel/time.c 2006-11-30 21:19:44 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/time.c 2007-02-06 03:05:22 +0100
+@@ -61,7 +61,7 @@ asmlinkage long sys_time(time_t __user *
+ time_t i;
+ struct timeval tv;
+
+- do_gettimeofday(&tv);
++ vx_gettimeofday(&tv);
+ i = tv.tv_sec;
+
+ if (tloc) {
+@@ -92,7 +92,7 @@ asmlinkage long sys_stime(time_t __user
+ if (err)
+ return err;
+
+- do_settimeofday(&tv);
++ vx_settimeofday(&tv);
+ return 0;
+ }
+
+@@ -102,7 +102,7 @@ asmlinkage long sys_gettimeofday(struct
+ {
+ if (likely(tv != NULL)) {
+ struct timeval ktv;
+- do_gettimeofday(&ktv);
++ vx_gettimeofday(&ktv);
+ if (copy_to_user(tv, &ktv, sizeof(ktv)))
+ return -EFAULT;
+ }
+@@ -176,7 +176,7 @@ int do_sys_settimeofday(struct timespec
+ /* SMP safe, again the code in arch/foo/time.c should
+ * globally block out interrupts when it runs.
+ */
+- return do_settimeofday(tv);
++ return vx_settimeofday(tv);
+ }
+ return 0;
+ }
+@@ -359,7 +359,7 @@ void getnstimeofday(struct timespec *tv)
+ {
+ struct timeval x;
+
+- do_gettimeofday(&x);
++ vx_gettimeofday(&x);
+ tv->tv_sec = x.tv_sec;
+ tv->tv_nsec = x.tv_usec * NSEC_PER_USEC;
+ }
+diff -NurpP --minimal linux-2.6.20.4/kernel/timer.c linux-2.6.20.4-vs2.2.0-rc20/kernel/timer.c
+--- linux-2.6.20.4/kernel/timer.c 2007-02-06 03:01:56 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/timer.c 2007-02-06 03:05:22 +0100
+@@ -34,6 +34,10 @@
+ #include <linux/cpu.h>
+ #include <linux/syscalls.h>
+ #include <linux/delay.h>
++#include <linux/vs_base.h>
++#include <linux/vs_cvirt.h>
++#include <linux/vs_pid.h>
++#include <linux/vserver/sched.h>
+
+ #include <asm/uaccess.h>
+ #include <asm/unistd.h>
+@@ -1224,12 +1228,6 @@ asmlinkage unsigned long sys_alarm(unsig
+
+ #endif
+
+-#ifndef __alpha__
+-
+-/*
+- * The Alpha uses getxpid, getxuid, and getxgid instead. Maybe this
+- * should be moved into arch/i386 instead?
+- */
+
+ /**
+ * sys_getpid - return the thread group id of the current process
+@@ -1242,7 +1240,7 @@ asmlinkage unsigned long sys_alarm(unsig
+ */
+ asmlinkage long sys_getpid(void)
+ {
+- return current->tgid;
++ return vx_map_tgid(current->tgid);
+ }
+
+ /*
+@@ -1258,10 +1256,23 @@ asmlinkage long sys_getppid(void)
+ rcu_read_lock();
+ pid = rcu_dereference(current->real_parent)->tgid;
+ rcu_read_unlock();
++ return vx_map_pid(pid);
++}
+
+- return pid;
++#ifdef __alpha__
++
++/*
++ * The Alpha uses getxpid, getxuid, and getxgid instead.
++ */
++
++asmlinkage long do_getxpid(long *ppid)
++{
++ *ppid = sys_getppid();
++ return sys_getpid();
+ }
+
++#else /* _alpha_ */
++
+ asmlinkage long sys_getuid(void)
+ {
+ /* Only we change this so SMP safe */
+@@ -1422,6 +1433,8 @@ asmlinkage long sys_sysinfo(struct sysin
+ tp.tv_nsec = tp.tv_nsec - NSEC_PER_SEC;
+ tp.tv_sec++;
+ }
++ if (vx_flags(VXF_VIRT_UPTIME, 0))
++ vx_vsi_uptime(&tp, NULL);
+ val.uptime = tp.tv_sec + (tp.tv_nsec ? 1 : 0);
+
+ val.loads[0] = avenrun[0] << (SI_LOAD_SHIFT - FSHIFT);
+diff -NurpP --minimal linux-2.6.20.4/kernel/user.c linux-2.6.20.4-vs2.2.0-rc20/kernel/user.c
+--- linux-2.6.20.4/kernel/user.c 2007-02-06 03:01:56 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/user.c 2007-02-06 03:05:22 +0100
+@@ -23,8 +23,8 @@
+ #define UIDHASH_BITS (CONFIG_BASE_SMALL ? 3 : 8)
+ #define UIDHASH_SZ (1 << UIDHASH_BITS)
+ #define UIDHASH_MASK (UIDHASH_SZ - 1)
+-#define __uidhashfn(uid) (((uid >> UIDHASH_BITS) + uid) & UIDHASH_MASK)
+-#define uidhashentry(uid) (uidhash_table + __uidhashfn((uid)))
++#define __uidhashfn(xid,uid) ((((uid) >> UIDHASH_BITS) + ((uid)^(xid))) & UIDHASH_MASK)
++#define uidhashentry(xid,uid) (uidhash_table + __uidhashfn((xid),(uid)))
+
+ static struct kmem_cache *uid_cachep;
+ static struct list_head uidhash_table[UIDHASH_SZ];
+@@ -66,7 +66,7 @@ static inline void uid_hash_remove(struc
+ list_del(&up->uidhash_list);
+ }
+
+-static inline struct user_struct *uid_hash_find(uid_t uid, struct list_head *hashent)
++static inline struct user_struct *uid_hash_find(xid_t xid, uid_t uid, struct list_head *hashent)
+ {
+ struct list_head *up;
+
+@@ -75,7 +75,7 @@ static inline struct user_struct *uid_ha
+
+ user = list_entry(up, struct user_struct, uidhash_list);
+
+- if(user->uid == uid) {
++ if(user->uid == uid && user->xid == xid) {
+ atomic_inc(&user->__count);
+ return user;
+ }
+@@ -90,13 +90,13 @@ static inline struct user_struct *uid_ha
+ *
+ * If the user_struct could not be found, return NULL.
+ */
+-struct user_struct *find_user(uid_t uid)
++struct user_struct *find_user(xid_t xid, uid_t uid)
+ {
+ struct user_struct *ret;
+ unsigned long flags;
+
+ spin_lock_irqsave(&uidhash_lock, flags);
+- ret = uid_hash_find(uid, uidhashentry(uid));
++ ret = uid_hash_find(xid, uid, uidhashentry(xid, uid));
+ spin_unlock_irqrestore(&uidhash_lock, flags);
+ return ret;
+ }
+@@ -120,13 +120,13 @@ void free_uid(struct user_struct *up)
+ }
+ }
+
+-struct user_struct * alloc_uid(uid_t uid)
++struct user_struct * alloc_uid(xid_t xid, uid_t uid)
+ {
+- struct list_head *hashent = uidhashentry(uid);
++ struct list_head *hashent = uidhashentry(xid, uid);
+ struct user_struct *up;
+
+ spin_lock_irq(&uidhash_lock);
+- up = uid_hash_find(uid, hashent);
++ up = uid_hash_find(xid, uid, hashent);
+ spin_unlock_irq(&uidhash_lock);
+
+ if (!up) {
+@@ -136,6 +136,7 @@ struct user_struct * alloc_uid(uid_t uid
+ if (!new)
+ return NULL;
+ new->uid = uid;
++ new->xid = xid;
+ atomic_set(&new->__count, 1);
+ atomic_set(&new->processes, 0);
+ atomic_set(&new->files, 0);
+@@ -158,7 +159,7 @@ struct user_struct * alloc_uid(uid_t uid
+ * on adding the same user already..
+ */
+ spin_lock_irq(&uidhash_lock);
+- up = uid_hash_find(uid, hashent);
++ up = uid_hash_find(xid, uid, hashent);
+ if (up) {
+ key_put(new->uid_keyring);
+ key_put(new->session_keyring);
+@@ -215,7 +216,7 @@ static int __init uid_cache_init(void)
+
+ /* Insert the root user immediately (init already runs as root) */
+ spin_lock_irq(&uidhash_lock);
+- uid_hash_insert(&root_user, uidhashentry(0));
++ uid_hash_insert(&root_user, uidhashentry(0,0));
+ spin_unlock_irq(&uidhash_lock);
+
+ return 0;
+diff -NurpP --minimal linux-2.6.20.4/kernel/utsname.c linux-2.6.20.4-vs2.2.0-rc20/kernel/utsname.c
+--- linux-2.6.20.4/kernel/utsname.c 2006-11-30 21:19:44 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/utsname.c 2007-02-06 03:05:22 +0100
+@@ -13,6 +13,7 @@
+ #include <linux/uts.h>
+ #include <linux/utsname.h>
+ #include <linux/version.h>
++#include <linux/vserver/global.h>
+
+ /*
+ * Clone a new ns copying an original utsname, setting refcount to 1
+@@ -27,6 +28,7 @@ static struct uts_namespace *clone_uts_n
+ if (ns) {
+ memcpy(&ns->name, &old_ns->name, sizeof(ns->name));
+ kref_init(&ns->kref);
++ atomic_inc(&vs_global_uts_ns);
+ }
+ return ns;
+ }
+@@ -91,5 +93,6 @@ void free_uts_ns(struct kref *kref)
+ struct uts_namespace *ns;
+
+ ns = container_of(kref, struct uts_namespace, kref);
++ atomic_dec(&vs_global_uts_ns);
+ kfree(ns);
+ }
+diff -NurpP --minimal linux-2.6.20.4/kernel/vserver/Kconfig linux-2.6.20.4-vs2.2.0-rc20/kernel/vserver/Kconfig
+--- linux-2.6.20.4/kernel/vserver/Kconfig 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/vserver/Kconfig 2007-03-19 16:17:46 +0100
+@@ -0,0 +1,284 @@
++#
++# Linux VServer configuration
++#
++
++menu "Linux VServer"
++
++config VSERVER_LEGACY
++ bool "Enable Legacy Kernel API"
++ depends on EXPERIMENTAL
++ default n
++ help
++ This enables the legacy API used in vs1.xx, maintaining
++ compatibility with older vserver tools, and guest images
++ that are configured using the legacy method.
++
++config VSERVER_LEGACY_VERSION
++ bool "Show a Legacy Version ID"
++ depends on VSERVER_LEGACY
++ default n
++ help
++ This shows a special legacy version to very old tools
++ which do not handle the current version correctly.
++
++ Warning: recent tools are not able to utilize the
++ newer APIs when this is enabled, so some features will
++ not be available. Better avoid it, unless you really,
++ really need it for backwards compatibility.
++
++config VSERVER_DYNAMIC_IDS
++ bool "Enable dynamic context IDs"
++ depends on EXPERIMENTAL && VSERVER_LEGACY
++ default n
++ help
++ This enables support of in kernel dynamic context IDs,
++ which is deprecated and will probably be removed in the
++ next release.
++
++config VSERVER_LEGACYNET
++ bool "Enable Legacy Networking Kernel API"
++ depends on EXPERIMENTAL
++ default n
++ help
++ This enables the legacy networking API which is used
++ by older tools (pre 0.30.210) to set up the network
++ context (chbind).
++
++config VSERVER_REMAP_SADDR
++ bool "Remap Source IP Address"
++ depends on EXPERIMENTAL
++ default n
++ help
++ This allows to remap the source IP address of 'local'
++ connections from 127.0.0.1 to the first assigned
++ guest IP.
++
++config VSERVER_COWBL
++ bool "Enable COW Immutable Link Breaking"
++ default y
++ help
++ This enables the COW (Copy-On-Write) link break code.
++ It allows you to treat unified files like normal files
++ when writing to them (which will implicitely break the
++ link and create a copy of the unified file)
++
++config VSERVER_VTIME
++ bool "Enable Virtualized Guest Time"
++ depends on EXPERIMENTAL
++ default n
++ help
++ This enables per guest time offsets to allow for
++ adjusting the system clock individually per guest.
++ this adds some overhead to the time functions and
++ therefore should not be enabled without good reason.
++
++config VSERVER_PROC_SECURE
++ bool "Enable Proc Security"
++ depends on PROC_FS
++ default y
++ help
++ This configures ProcFS security to initially hide
++ non-process entries for all contexts except the main and
++ spectator context (i.e. for all guests), which is a secure
++ default.
++
++ (note: on 1.2x the entries were visible by default)
++
++config VSERVER_HARDCPU
++ bool "Enable Hard CPU Limits"
++ default y
++ help
++ Activate the Hard CPU Limits
++
++ This will compile in code that allows the Token Bucket
++ Scheduler to put processes on hold when a context's
++ tokens are depleted (provided that its per-context
++ sched_hard flag is set).
++
++ Processes belonging to that context will not be able
++ to consume CPU resources again until a per-context
++ configured minimum of tokens has been reached.
++
++config VSERVER_IDLETIME
++ bool "Avoid idle CPUs by skipping Time"
++ depends on VSERVER_HARDCPU
++ default y
++ help
++ This option allows the scheduler to artificially
++ advance time (per cpu) when otherwise the idle
++ task would be scheduled, thus keeping the cpu
++ busy and sharing the available resources among
++ certain contexts.
++
++config VSERVER_IDLELIMIT
++ bool "Limit the IDLE task"
++ depends on VSERVER_HARDCPU
++ default n
++ help
++ Limit the idle slices, so the the next context
++ will be scheduled as soon as possible.
++
++ This might improve interactivity and latency, but
++ will also marginally increase scheduling overhead.
++
++choice
++ prompt "Persistent Inode Tagging"
++ default TAGGING_ID24
++ help
++ This adds persistent context information to filesystems
++ mounted with the tagxid option. Tagging is a requirement
++ for per-context disk limits and per-context quota.
++
++
++config TAGGING_NONE
++ bool "Disabled"
++ help
++ do not store per-context information in inodes.
++
++config TAGGING_UID16
++ bool "UID16/GID32"
++ help
++ reduces UID to 16 bit, but leaves GID at 32 bit.
++
++config TAGGING_GID16
++ bool "UID32/GID16"
++ help
++ reduces GID to 16 bit, but leaves UID at 32 bit.
++
++config TAGGING_ID24
++ bool "UID24/GID24"
++ help
++ uses the upper 8bit from UID and GID for XID tagging
++ which leaves 24bit for UID/GID each, which should be
++ more than sufficient for normal use.
++
++config TAGGING_INTERN
++ bool "UID32/GID32"
++ help
++ this uses otherwise reserved inode fields in the on
++ disk representation, which limits the use to a few
++ filesystems (currently ext2 and ext3)
++
++endchoice
++
++config TAG_NFSD
++ bool "Tag NFSD User Auth and Files"
++ default n
++ help
++ Enable this if you do want the in-kernel NFS
++ Server to use the tagging specified above.
++ (will require patched clients too)
++
++config PROPAGATE
++ bool "Enable Inode Tag Propagation"
++ default n
++ depends on EXPERIMENTAL
++ help
++ This allows for the tagid= mount option to specify
++ a tagid which is to be used for the entire mount
++ tree.
++
++config VSERVER_PRIVACY
++ bool "Honor Privacy Aspects of Guests"
++ default y
++ help
++ When enabled, most context checks will disallow
++ access to structures assigned to a specific context,
++ like ptys or loop devices.
++
++config VSERVER_CONTEXTS
++ int "Maximum number of Contexts (1-65533)" if EMBEDDED
++ range 1 65533
++ default "768" if 64BIT
++ default "256"
++ help
++ This setting will optimize certain data structures
++ and memory allocations according to the expected
++ maximum.
++
++ note: this is not a strict upper limit.
++
++config VSERVER_WARN
++ bool "VServer Warnings"
++ default y
++ help
++ This enables various runtime warnings, which will
++ notify about potential manipulation attempts or
++ resource shortage. It is generally considered to
++ be a good idea to have that enabled.
++
++config VSERVER_DEBUG
++ bool "VServer Debugging Code"
++ default n
++ help
++ Set this to yes if you want to be able to activate
++ debugging output at runtime. It adds a very small
++ overhead to all vserver related functions and
++ increases the kernel size by about 20k.
++
++config VSERVER_HISTORY
++ bool "VServer History Tracing"
++ depends on VSERVER_DEBUG
++ default n
++ help
++ Set this to yes if you want to record the history of
++ linux-vserver activities, so they can be replayed in
++ the event of a kernel panic or oops.
++
++config VSERVER_HISTORY_SIZE
++ int "Per-CPU History Size (32-65536)"
++ depends on VSERVER_HISTORY
++ range 32 65536
++ default 64
++ help
++ This allows you to specify the number of entries in
++ the per-CPU history buffer.
++
++config VSERVER_MONITOR
++ bool "VServer Scheduling Monitor"
++ depends on VSERVER_DEBUG
++ default n
++ help
++ Set this to yes if you want to record the scheduling
++ decisions, so that they can be relayed to userspace
++ for detailed analysis.
++
++config VSERVER_MONITOR_SIZE
++ int "Per-CPU Monitor Queue Size (32-65536)"
++ depends on VSERVER_MONITOR
++ range 32 65536
++ default 1024
++ help
++ This allows you to specify the number of entries in
++ the per-CPU scheduling monitor buffer.
++
++config VSERVER_MONITOR_SYNC
++ int "Per-CPU Monitor Sync Interval (0-65536)"
++ depends on VSERVER_MONITOR
++ range 0 65536
++ default 256
++ help
++ This allows you to specify the interval in ticks
++ when a time sync entry is inserted.
++
++endmenu
++
++
++config VSERVER
++ bool
++ default y
++ select UTS_NS
++ select SYSVIPC
++ select IPC_NS
++
++config VSERVER_SECURITY
++ bool
++ depends on SECURITY
++ default y
++ select SECURITY_CAPABILITIES
++
++config VSERVER_NGNET
++ bool
++ depends on EXPERIMENTAL && !VSERVER_LEGACYNET
++ default y
++
+diff -NurpP --minimal linux-2.6.20.4/kernel/vserver/Makefile linux-2.6.20.4-vs2.2.0-rc20/kernel/vserver/Makefile
+--- linux-2.6.20.4/kernel/vserver/Makefile 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/vserver/Makefile 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,17 @@
++#
++# Makefile for the Linux vserver routines.
++#
++
++
++obj-y += vserver.o
++
++vserver-y := switch.o context.o space.o sched.o network.o inode.o \
++ limit.o cvirt.o cacct.o signal.o helper.o init.o dlimit.o
++
++vserver-$(CONFIG_PROC_FS) += proc.o
++vserver-$(CONFIG_VSERVER_DEBUG) += sysctl.o debug.o
++vserver-$(CONFIG_VSERVER_LEGACY) += legacy.o
++vserver-$(CONFIG_VSERVER_LEGACYNET) += legacynet.o
++vserver-$(CONFIG_VSERVER_HISTORY) += history.o
++vserver-$(CONFIG_VSERVER_MONITOR) += monitor.o
++
+diff -NurpP --minimal linux-2.6.20.4/kernel/vserver/cacct.c linux-2.6.20.4-vs2.2.0-rc20/kernel/vserver/cacct.c
+--- linux-2.6.20.4/kernel/vserver/cacct.c 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/vserver/cacct.c 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,44 @@
++/*
++ * linux/kernel/vserver/cacct.c
++ *
++ * Virtual Server: Context Accounting
++ *
++ * Copyright (C) 2006 Herbert Ptzl
++ *
++ * V0.01 added accounting stats
++ *
++ */
++
++#include <linux/types.h>
++#include <linux/sched.h>
++#include <linux/vs_context.h>
++#include <linux/vserver/switch.h>
++#include <linux/vserver/cacct_cmd.h>
++#include <linux/vserver/cacct_int.h>
++
++#include <asm/errno.h>
++#include <asm/uaccess.h>
++
++
++int vc_sock_stat(struct vx_info *vxi, void __user *data)
++{
++ struct vcmd_sock_stat_v0 vc_data;
++ int j, field;
++
++ if (copy_from_user (&vc_data, data, sizeof(vc_data)))
++ return -EFAULT;
++
++ field = vc_data.field;
++ if ((field < 0) || (field >= VXA_SOCK_SIZE))
++ return -EINVAL;
++
++ for (j=0; j<3; j++) {
++ vc_data.count[j] = vx_sock_count(&vxi->cacct, field, j);
++ vc_data.total[j] = vx_sock_total(&vxi->cacct, field, j);
++ }
++
++ if (copy_to_user (data, &vc_data, sizeof(vc_data)))
++ return -EFAULT;
++ return 0;
++}
++
+diff -NurpP --minimal linux-2.6.20.4/kernel/vserver/cacct_init.h linux-2.6.20.4-vs2.2.0-rc20/kernel/vserver/cacct_init.h
+--- linux-2.6.20.4/kernel/vserver/cacct_init.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/vserver/cacct_init.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,25 @@
++
++
++static inline void vx_info_init_cacct(struct _vx_cacct *cacct)
++{
++ int i,j;
++
++
++ for (i=0; i<VXA_SOCK_SIZE; i++) {
++ for (j=0; j<3; j++) {
++ atomic_set(&cacct->sock[i][j].count, 0);
++ atomic_set(&cacct->sock[i][j].total, 0);
++ }
++ }
++ for (i=0; i<8; i++)
++ atomic_set(&cacct->slab[i], 0);
++ for (i=0; i<5; i++)
++ for (j=0; j<4; j++)
++ atomic_set(&cacct->page[i][j], 0);
++}
++
++static inline void vx_info_exit_cacct(struct _vx_cacct *cacct)
++{
++ return;
++}
++
+diff -NurpP --minimal linux-2.6.20.4/kernel/vserver/cacct_proc.h linux-2.6.20.4-vs2.2.0-rc20/kernel/vserver/cacct_proc.h
+--- linux-2.6.20.4/kernel/vserver/cacct_proc.h 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/vserver/cacct_proc.h 2007-02-06 03:05:22 +0100
+@@ -0,0 +1,58 @@
++#ifndef _VX_CACCT_PROC_H
++#define _VX_CACCT_PROC_H
++
++#include <linux/vserver/cacct_int.h>
++
++
++#define VX_SOCKA_TOP \
++ "Type\t recv #/bytes\t\t send #/bytes\t\t fail #/bytes\n"
++
++static inline int vx_info_proc_cacct(struct _vx_cacct *cacct, char *buffer)
++{
++ int i,j, length = 0;
++ static char *type[VXA_SOCK_SIZE] = {
++ "UNSPEC", "UNIX", "INET", "INET6", "PACKET", "OTHER" };
++
++ length += sprintf(buffer + length, VX_SOCKA_TOP);
++ for (i=0; i<VXA_SOCK_SIZE; i++) {
++ length += sprintf(buffer + length,
++ "%s:", type[i]);
++ for (j=0; j<3; j++) {
++ length += sprintf(buffer + length,
++ "\t%10lu/%-10lu"
++ ,vx_sock_count(cacct, i, j)
++ ,vx_sock_total(cacct, i, j)
++ );
++ }
++ buffer[length++] = '\n';
++ }
++
++ length += sprintf(buffer + length, "\n");
++ length += sprintf(buffer + length,
++ "slab:\t %8u %8u %8u %8u\n"
++ ,atomic_read(&cacct->slab[1])
++ ,atomic_read(&cacct->slab[4])
++ ,atomic_read(&cacct->slab[0])
++ ,atomic_read(&cacct->slab[2])
++ );
++
++ length += sprintf(buffer + length, "\n");
++ for (i=0; i<5; i++) {
++ length += sprintf(buffer + length,
++ "page[%d]: %8u %8u %8u %8u\t %8u %8u %8u %8u\n"
++ ,i
++ ,atomic_read(&cacct->page[i][0])
++ ,atomic_read(&cacct->page[i][1])
++ ,atomic_read(&cacct->page[i][2])
++ ,atomic_read(&cacct->page[i][3])
++ ,atomic_read(&cacct->page[i][4])
++ ,atomic_read(&cacct->page[i][5])
++ ,atomic_read(&cacct->page[i][6])
++ ,atomic_read(&cacct->page[i][7])
++ );
++ }
++
++ return length;
++}
++
++#endif /* _VX_CACCT_PROC_H */
+diff -NurpP --minimal linux-2.6.20.4/kernel/vserver/context.c linux-2.6.20.4-vs2.2.0-rc20/kernel/vserver/context.c
+--- linux-2.6.20.4/kernel/vserver/context.c 1970-01-01 01:00:00 +0100
++++ linux-2.6.20.4-vs2.2.0-rc20/kernel/vserver/context.c 2007-03-18 23:41:11 +0100
+@@ -0,0 +1,1096 @@
++/*
++ * linux/kernel/vserver/context.c
++ *
++ * Virtual Server: Context Support
++ *
++ * Copyright (C) 2003-2006 Herbert Ptzl
++ *
++ * V0.01 context helper
++ * V0.02 vx_ctx_kill syscall command
++ * V0.03 replaced context_info calls
++ * V0.04