summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat (limited to '2.2/patches/20_all_peruser_0.3.0.patch')
-rw-r--r--2.2/patches/20_all_peruser_0.3.0.patch3498
1 files changed, 3498 insertions, 0 deletions
diff --git a/2.2/patches/20_all_peruser_0.3.0.patch b/2.2/patches/20_all_peruser_0.3.0.patch
new file mode 100644
index 0000000..54a0afc
--- /dev/null
+++ b/2.2/patches/20_all_peruser_0.3.0.patch
@@ -0,0 +1,3498 @@
+diff -Nur httpd-2.2.3/server/mpm/config.m4 httpd-2.2.3-peruser/server/mpm/config.m4
+--- httpd-2.2.3/server/mpm/config.m4 2005-10-30 10:05:26.000000000 -0700
++++ httpd-2.2.3-peruser/server/mpm/config.m4 2007-09-24 22:52:22.000000000 -0600
+@@ -1,7 +1,7 @@
+ AC_MSG_CHECKING(which MPM to use)
+ AC_ARG_WITH(mpm,
+ APACHE_HELP_STRING(--with-mpm=MPM,Choose the process model for Apache to use.
+- MPM={beos|event|worker|prefork|mpmt_os2}),[
++ MPM={beos|event|worker|prefork|mpmt_os2|peruser}),[
+ APACHE_MPM=$withval
+ ],[
+ if test "x$APACHE_MPM" = "x"; then
+@@ -23,7 +23,7 @@
+
+ ap_mpm_is_experimental ()
+ {
+- if test "$apache_cv_mpm" = "event" ; then
++ if test "$apache_cv_mpm" = "event" -o "$apache_cv_mpm" = "peruser" ; then
+ return 0
+ else
+ return 1
+diff -Nur httpd-2.2.3/server/mpm/experimental/peruser/AUTHORS httpd-2.2.3-peruser/server/mpm/experimental/peruser/AUTHORS
+--- httpd-2.2.3/server/mpm/experimental/peruser/AUTHORS 1969-12-31 17:00:00.000000000 -0700
++++ httpd-2.2.3-peruser/server/mpm/experimental/peruser/AUTHORS 2007-09-28 17:29:01.000000000 -0600
+@@ -0,0 +1,9 @@
++Enrico Weigelt <weigelt [at] metux.de> (MetuxMPM maintainer)
++Sean Gabriel Heacock <gabriel [at] telana.com> (Peruser maintainer)
++Stefan Seufert <stefan [at] seuf.de>
++Janno Sannik <janno [at] kood.ee>
++Taavi Sannik <taavi [at] kood.ee>
++Rommer <rommer [at] active.by>
++Bert <bert [at] ev6.net>
++Leen Besselink <leen [at] consolejunkie.net>
++Steve Amerige <mpm [at] fatbear.com>
+diff -Nur httpd-2.2.3/server/mpm/experimental/peruser/Makefile.in httpd-2.2.3-peruser/server/mpm/experimental/peruser/Makefile.in
+--- httpd-2.2.3/server/mpm/experimental/peruser/Makefile.in 1969-12-31 17:00:00.000000000 -0700
++++ httpd-2.2.3-peruser/server/mpm/experimental/peruser/Makefile.in 2007-09-28 17:29:01.000000000 -0600
+@@ -0,0 +1,5 @@
++
++LTLIBRARY_NAME = libperuser.la
++LTLIBRARY_SOURCES = peruser.c
++
++include $(top_srcdir)/build/ltlib.mk
+diff -Nur httpd-2.2.3/server/mpm/experimental/peruser/config.m4 httpd-2.2.3-peruser/server/mpm/experimental/peruser/config.m4
+--- httpd-2.2.3/server/mpm/experimental/peruser/config.m4 1969-12-31 17:00:00.000000000 -0700
++++ httpd-2.2.3-peruser/server/mpm/experimental/peruser/config.m4 2007-09-28 17:29:01.000000000 -0600
+@@ -0,0 +1,3 @@
++if test "$MPM_NAME" = "peruser" ; then
++ APACHE_FAST_OUTPUT(server/mpm/experimental/$MPM_NAME/Makefile)
++fi
+diff -Nur httpd-2.2.3/server/mpm/experimental/peruser/mpm.h httpd-2.2.3-peruser/server/mpm/experimental/peruser/mpm.h
+--- httpd-2.2.3/server/mpm/experimental/peruser/mpm.h 1969-12-31 17:00:00.000000000 -0700
++++ httpd-2.2.3-peruser/server/mpm/experimental/peruser/mpm.h 2007-09-28 17:29:01.000000000 -0600
+@@ -0,0 +1,103 @@
++/* ====================================================================
++ * The Apache Software License, Version 1.1
++ *
++ * Copyright (c) 2000-2003 The Apache Software Foundation. All rights
++ * reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ *
++ * 1. Redistributions of source code must retain the above copyright
++ * notice, this list of conditions and the following disclaimer.
++ *
++ * 2. Redistributions in binary form must reproduce the above copyright
++ * notice, this list of conditions and the following disclaimer in
++ * the documentation and/or other materials provided with the
++ * distribution.
++ *
++ * 3. The end-user documentation included with the redistribution,
++ * if any, must include the following acknowledgment:
++ * "This product includes software developed by the
++ * Apache Software Foundation (http://www.apache.org/)."
++ * Alternately, this acknowledgment may appear in the software itself,
++ * if and wherever such third-party acknowledgments normally appear.
++ *
++ * 4. The names "Apache" and "Apache Software Foundation" must
++ * not be used to endorse or promote products derived from this
++ * software without prior written permission. For written
++ * permission, please contact apache@apache.org.
++ *
++ * 5. Products derived from this software may not be called "Apache",
++ * nor may "Apache" appear in their name, without prior written
++ * permission of the Apache Software Foundation.
++ *
++ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
++ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
++ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
++ * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
++ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
++ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
++ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
++ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
++ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
++ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
++ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
++ * SUCH DAMAGE.
++ * ====================================================================
++ *
++ * This software consists of voluntary contributions made by many
++ * individuals on behalf of the Apache Software Foundation. For more
++ * information on the Apache Software Foundation, please see
++ * <http://www.apache.org/>.
++ *
++ * Portions of this software are based upon public domain software
++ * originally written at the National Center for Supercomputing Applications,
++ * University of Illinois, Urbana-Champaign.
++ */
++
++#include "httpd.h"
++#include "mpm_default.h"
++#include "scoreboard.h"
++#include "unixd.h"
++
++#ifndef APACHE_MPM_PERUSER_H
++#define APACHE_MPM_PERUSER_H
++
++#define PERUSER_MPM
++
++#define MPM_NAME "Peruser"
++
++#define AP_MPM_WANT_RECLAIM_CHILD_PROCESSES
++#define AP_MPM_WANT_WAIT_OR_TIMEOUT
++#define AP_MPM_WANT_PROCESS_CHILD_STATUS
++#define AP_MPM_WANT_SET_PIDFILE
++#define AP_MPM_WANT_SET_SCOREBOARD
++#define AP_MPM_WANT_SET_LOCKFILE
++#define AP_MPM_WANT_SET_MAX_REQUESTS
++#define AP_MPM_WANT_SET_COREDUMPDIR
++#define AP_MPM_WANT_SET_ACCEPT_LOCK_MECH
++#define AP_MPM_WANT_SIGNAL_SERVER
++#define AP_MPM_WANT_SET_MAX_MEM_FREE
++#define AP_MPM_DISABLE_NAGLE_ACCEPTED_SOCK
++
++#define AP_MPM_USES_POD 1
++#define MPM_CHILD_PID(i) (ap_scoreboard_image->parent[i].pid)
++#define MPM_NOTE_CHILD_KILLED(i) (MPM_CHILD_PID(i) = 0)
++#define MPM_ACCEPT_FUNC unixd_accept
++
++extern int ap_threads_per_child;
++extern int ap_max_daemons_limit;
++extern server_rec *ap_server_conf;
++
++/* Table of child status */
++#define SERVER_DEAD 0
++#define SERVER_DYING 1
++#define SERVER_ALIVE 2
++
++typedef struct ap_ctable {
++ pid_t pid;
++ unsigned char status;
++} ap_ctable;
++
++#endif /* APACHE_MPM_PERUSER_H */
+diff -Nur httpd-2.2.3/server/mpm/experimental/peruser/mpm_default.h httpd-2.2.3-peruser/server/mpm/experimental/peruser/mpm_default.h
+--- httpd-2.2.3/server/mpm/experimental/peruser/mpm_default.h 1969-12-31 17:00:00.000000000 -0700
++++ httpd-2.2.3-peruser/server/mpm/experimental/peruser/mpm_default.h 2007-09-28 17:29:01.000000000 -0600
+@@ -0,0 +1,110 @@
++/* ====================================================================
++ * The Apache Software License, Version 1.1
++ *
++ * Copyright (c) 2000-2003 The Apache Software Foundation. All rights
++ * reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ *
++ * 1. Redistributions of source code must retain the above copyright
++ * notice, this list of conditions and the following disclaimer.
++ *
++ * 2. Redistributions in binary form must reproduce the above copyright
++ * notice, this list of conditions and the following disclaimer in
++ * the documentation and/or other materials provided with the
++ * distribution.
++ *
++ * 3. The end-user documentation included with the redistribution,
++ * if any, must include the following acknowledgment:
++ * "This product includes software developed by the
++ * Apache Software Foundation (http://www.apache.org/)."
++ * Alternately, this acknowledgment may appear in the software itself,
++ * if and wherever such third-party acknowledgments normally appear.
++ *
++ * 4. The names "Apache" and "Apache Software Foundation" must
++ * not be used to endorse or promote products derived from this
++ * software without prior written permission. For written
++ * permission, please contact apache@apache.org.
++ *
++ * 5. Products derived from this software may not be called "Apache",
++ * nor may "Apache" appear in their name, without prior written
++ * permission of the Apache Software Foundation.
++ *
++ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
++ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
++ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
++ * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
++ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
++ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
++ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
++ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
++ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
++ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
++ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
++ * SUCH DAMAGE.
++ * ====================================================================
++ *
++ * This software consists of voluntary contributions made by many
++ * individuals on behalf of the Apache Software Foundation. For more
++ * information on the Apache Software Foundation, please see
++ * <http://www.apache.org/>.
++ *
++ * Portions of this software are based upon public domain software
++ * originally written at the National Center for Supercomputing Applications,
++ * University of Illinois, Urbana-Champaign.
++ */
++
++#ifndef APACHE_MPM_DEFAULT_H
++#define APACHE_MPM_DEFAULT_H
++
++/* Number of processors to spawn off for each ServerEnvironment by default */
++
++#ifndef DEFAULT_START_PROCESSORS
++#define DEFAULT_START_PROCESSORS 0
++#endif
++
++/* Minimum number of running processors per ServerEnvironment */
++
++#ifndef DEFAULT_MIN_PROCESSORS
++#define DEFAULT_MIN_PROCESSORS 0
++#endif
++
++/* Minimum --- fewer than this, and more will be created */
++
++#ifndef DEFAULT_MIN_FREE_PROCESSORS
++#define DEFAULT_MIN_FREE_PROCESSORS 2
++#endif
++
++/* Maximum processors per ServerEnvironment */
++
++#ifndef DEFAULT_MAX_PROCESSORS
++#define DEFAULT_MAX_PROCESSORS 10
++#endif
++
++/* File used for accept locking, when we use a file */
++#ifndef DEFAULT_LOCKFILE
++#define DEFAULT_LOCKFILE DEFAULT_REL_RUNTIMEDIR "/accept.lock"
++#endif
++
++/* Where the main/parent process's pid is logged */
++#ifndef DEFAULT_PIDLOG
++#define DEFAULT_PIDLOG DEFAULT_REL_RUNTIMEDIR "/httpd.pid"
++#endif
++
++/*
++ * Interval, in microseconds, between scoreboard maintenance.
++ */
++#ifndef SCOREBOARD_MAINTENANCE_INTERVAL
++#define SCOREBOARD_MAINTENANCE_INTERVAL 1000000
++#endif
++
++/* Number of requests to try to handle in a single process. If <= 0,
++ * the children don't die off.
++ */
++#ifndef DEFAULT_MAX_REQUESTS_PER_CHILD
++#define DEFAULT_MAX_REQUESTS_PER_CHILD 10000
++#endif
++
++#endif /* AP_MPM_DEFAULT_H */
+diff -Nur httpd-2.2.3/server/mpm/experimental/peruser/peruser.c httpd-2.2.3-peruser/server/mpm/experimental/peruser/peruser.c
+--- httpd-2.2.3/server/mpm/experimental/peruser/peruser.c 1969-12-31 17:00:00.000000000 -0700
++++ httpd-2.2.3-peruser/server/mpm/experimental/peruser/peruser.c 2007-10-03 11:28:06.000000000 -0600
+@@ -0,0 +1,3223 @@
++/* ====================================================================
++ * The Apache Software License, Version 1.1
++ *
++ * Copyright (c) 2000-2003 The Apache Software Foundation. All rights
++ * reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ *
++ * 1. Redistributions of source code must retain the above copyright
++ * notice, this list of conditions and the following disclaimer.
++ *
++ * 2. Redistributions in binary form must reproduce the above copyright
++ * notice, this list of conditions and the following disclaimer in
++ * the documentation and/or other materials provided with the
++ * distribution.
++ *
++ * 3. The end-user documentation included with the redistribution,
++ * if any, must include the following acknowledgment:
++ * "This product includes software developed by the
++ * Apache Software Foundation (http://www.apache.org/)."
++ * Alternately, this acknowledgment may appear in the software itself,
++ * if and wherever such third-party acknowledgments normally appear.
++ *
++ * 4. The names "Apache" and "Apache Software Foundation" must
++ * not be used to endorse or promote products derived from this
++ * software without prior written permission. For written
++ * permission, please contact apache@apache.org.
++ *
++ * 5. Products derived from this software may not be called "Apache",
++ * nor may "Apache" appear in their name, without prior written
++ * permission of the Apache Software Foundation.
++ *
++ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
++ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
++ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
++ * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
++ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
++ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
++ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
++ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
++ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
++ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
++ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
++ * SUCH DAMAGE.
++ * ====================================================================
++ *
++ * This software consists of voluntary contributions made by many
++ * individuals on behalf of the Apache Software Foundation. For more
++ * information on the Apache Software Foundation, please see
++ * <http://www.apache.org/>.
++ *
++ * Portions of this software are based upon public domain software
++ * originally written at the National Center for Supercomputing Applications,
++ * University of Illinois, Urbana-Champaign.
++ */
++
++/* Peruser version 0.3.0 */
++
++/* #define MPM_PERUSER_DEBUG */
++
++#include "apr.h"
++#include "apr_hash.h"
++#include "apr_pools.h"
++#include "apr_file_io.h"
++#include "apr_portable.h"
++#include "apr_strings.h"
++#include "apr_thread_proc.h"
++#include "apr_signal.h"
++#define APR_WANT_STDIO
++#define APR_WANT_STRFUNC
++#define APR_WANT_IOVEC
++#include "apr_want.h"
++
++#if APR_HAVE_UNISTD_H
++#include <unistd.h>
++#endif
++#if APR_HAVE_SYS_TYPES_H
++#include <sys/types.h>
++#endif
++
++#define CORE_PRIVATE
++
++#include "ap_config.h"
++#include "httpd.h"
++#include "mpm_default.h"
++#include "http_main.h"
++#include "http_log.h"
++#include "http_config.h"
++#include "http_core.h" /* for get_remote_host */
++#include "http_connection.h"
++#include "http_protocol.h" /* for ap_hook_post_read_request */
++#include "http_vhost.h" /* for ap_update_vhost_given_ip */
++#include "scoreboard.h"
++#include "ap_mpm.h"
++#include "unixd.h"
++#include "mpm_common.h"
++#include "ap_listen.h"
++#include "ap_mmn.h"
++#include "apr_poll.h"
++#include "util_ebcdic.h"
++#include "mod_status.h"
++
++#ifdef HAVE_BSTRING_H
++#include <bstring.h> /* for IRIX, FD_SET calls bzero() */
++#endif
++
++#ifdef HAVE_TIME_H
++#include <time.h>
++#endif
++
++#ifdef HAVE_SYS_PROCESSOR_H
++#include <sys/processor.h> /* for bindprocessor() */
++#endif
++
++#if APR_HAS_SHARED_MEMORY
++#include "apr_shm.h"
++#else
++#error "Peruser MPM requres shared memory support."
++#endif
++
++
++/* should be APR-ized */
++#include <grp.h>
++#include <pwd.h>
++#include <sys/stat.h>
++#include <sys/un.h>
++#include <setjmp.h>
++
++#include <signal.h>
++#include <sys/times.h>
++
++
++#ifdef MPM_PERUSER_DEBUG
++# define _DBG(text,par...) \
++ ap_log_error(APLOG_MARK, APLOG_WARNING, 0, NULL, \
++ "(peruser: pid=%d uid=%d child=%d) %s(): " text, \
++ getpid(), getuid(), my_child_num, __FUNCTION__, ##par, 0)
++
++# define _TRACE_CALL(text,par...) _DBG("calling " text, ##par)
++# define _TRACE_RET(text,par...) _DBG("returned from " text, ##par)
++#else
++# define _DBG(text,par...)
++# define _TRACE_RET(text,par...)
++# define _TRACE_CALL(text,par...)
++#endif /* MPM_PERUSER_DEBUG */
++
++/* char of death - for signalling children to die */
++#define AP_PERUSER_CHAR_OF_DEATH '!'
++
++#define PERUSER_SERVER_CONF(cf) \
++ ((peruser_server_conf *) ap_get_module_config(cf, &mpm_peruser_module))
++
++#define SCOREBOARD_STATUS(i) ap_scoreboard_image->servers[i][0].status
++
++/*
++ * Define some magic numbers that we use for the state of the incomming
++ * request. These must be < 0 so they don't collide with a file descriptor.
++ */
++#define AP_PERUSER_THISCHILD -1
++#define AP_PERUSER_OTHERCHILD -2
++
++
++/* Limit on the total --- clients will be locked out if more servers than
++ * this are needed. It is intended solely to keep the server from crashing
++ * when things get out of hand.
++ *
++ * We keep a hard maximum number of servers, for two reasons --- first off,
++ * in case something goes seriously wrong, we want to stop the fork bomb
++ * short of actually crashing the machine we're running on by filling some
++ * kernel table. Secondly, it keeps the size of the scoreboard file small
++ * enough that we can read the whole thing without worrying too much about
++ * the overhead.
++ */
++#ifndef DEFAULT_SERVER_LIMIT
++#define DEFAULT_SERVER_LIMIT 256
++#endif
++
++/* Admin can't tune ServerLimit beyond MAX_SERVER_LIMIT. We want
++ * some sort of compile-time limit to help catch typos.
++ */
++#ifndef MAX_SERVER_LIMIT
++#define MAX_SERVER_LIMIT 20000
++#endif
++
++#ifndef HARD_THREAD_LIMIT
++#define HARD_THREAD_LIMIT 1
++#endif
++
++#define CHILD_TYPE_UNKNOWN 0
++#define CHILD_TYPE_MULTIPLEXER 1
++#define CHILD_TYPE_PROCESSOR 2
++#define CHILD_TYPE_WORKER 3
++
++#define CHILD_STATUS_STANDBY 0 /* wait for a request before starting */
++#define CHILD_STATUS_STARTING 1 /* wait for socket creation */
++#define CHILD_STATUS_READY 2 /* wait for mux to restart */
++#define CHILD_STATUS_ACTIVE 3 /* ready to take requests */
++#define CHILD_STATUS_RESTART 4 /* child about to die and restart */
++
++/* config globals */
++
++int ap_threads_per_child=0; /* Worker threads per child */
++static apr_proc_mutex_t *accept_mutex;
++static int ap_min_processors=DEFAULT_MIN_PROCESSORS;
++static int ap_min_free_processors=DEFAULT_MIN_FREE_PROCESSORS;
++static int ap_max_processors=DEFAULT_MAX_PROCESSORS;
++static int ap_daemons_limit=0; /* MaxClients */
++static int expire_timeout=1800;
++static int idle_timeout=900;
++static int server_limit = DEFAULT_SERVER_LIMIT;
++static int first_server_limit;
++static int changed_limit_at_restart;
++static int requests_this_child;
++static int mpm_state = AP_MPMQ_STARTING;
++static ap_pod_t *pod;
++
++/* === configuration stuff === */
++
++typedef struct
++{
++ int processor_id;
++
++ /* security settings */
++ uid_t uid; /* user id */
++ gid_t gid; /* group id */
++ const char *chroot; /* directory to chroot() to, can be null */
++
++ /* resource settings */
++ int min_processors;
++ int min_free_processors;
++ int max_processors;
++
++ /* sockets */
++ int input; /* The socket descriptor */
++ int output; /* The socket descriptor */
++} server_env_t;
++
++typedef struct
++{
++ apr_size_t num;
++} server_env_control;
++
++typedef struct
++{
++ server_env_control *control;
++ server_env_t *table;
++} server_env;
++
++
++typedef struct
++{
++ /* identification */
++ int id; /* index in child_info_table */
++ pid_t pid; /* process id */
++ int status; /* status of child */
++ int type; /* multiplexer or processor */
++ server_env_t *senv;
++
++ /* sockets */
++ int sock_fd;
++
++ /* stack context saved state */
++ jmp_buf jmpbuffer;
++} child_info_t;
++
++typedef struct
++{
++ /* identification */
++ int id; /* index in child_info_table */
++ pid_t pid; /* process id */
++ int status; /* status of child */
++ int type; /* multiplexer or processor */
++ apr_time_t last_used;
++} child_grace_info_t;
++
++typedef struct
++{
++ apr_size_t num;
++} child_info_control;
++
++typedef struct
++{
++ child_info_control *control;
++ child_info_t *table;
++} child_info;
++
++typedef struct
++{
++ server_env_t *senv;
++} peruser_server_conf;
++
++
++typedef struct peruser_header
++{
++ char *headers;
++ apr_pool_t *p;
++} peruser_header;
++
++
++/* Tables used to determine the user and group each child process should
++ * run as. The hash table is used to correlate a server name with a child
++ * process.
++ */
++static apr_size_t child_info_size;
++static child_info *child_info_image;
++static child_grace_info_t *child_grace_info_table;
++struct ap_ctable *ap_child_table;
++
++#define NUM_CHILDS (child_info_image != NULL ? child_info_image->control->num : 0)
++#define CHILD_INFO_TABLE (child_info_image != NULL ? child_info_image->table : NULL)
++
++static apr_size_t server_env_size;
++static server_env *server_env_image = NULL;
++
++#define NUM_SENV (server_env_image != NULL ? server_env_image->control->num : 0)
++#define SENV (server_env_image != NULL ? server_env_image->table : NULL)
++
++#if APR_HAS_SHARED_MEMORY
++#ifndef WIN32
++static /* but must be exported to mpm_winnt */
++#endif
++ apr_shm_t *child_info_shm = NULL;
++ apr_shm_t *server_env_shm = NULL;
++#endif
++
++/*
++ * The max child slot ever assigned, preserved across restarts. Necessary
++ * to deal with MaxClients changes across AP_SIG_GRACEFUL restarts. We
++ * use this value to optimize routines that have to scan the entire scoreboard.
++ */
++int ap_max_daemons_limit = -1;
++server_rec *ap_server_conf;
++
++module AP_MODULE_DECLARE_DATA mpm_peruser_module;
++
++/* -- replace the pipe-of-death by an control socket -- */
++static apr_file_t *pipe_of_death_in = NULL;
++static apr_file_t *pipe_of_death_out = NULL;
++
++
++/* one_process --- debugging mode variable; can be set from the command line
++ * with the -X flag. If set, this gets you the child_main loop running
++ * in the process which originally started up (no detach, no make_child),
++ * which is a pretty nice debugging environment. (You'll get a SIGHUP
++ * early in standalone_main; just continue through. This is the server
++ * trying to kill off any child processes which it might have lying
++ * around --- Apache doesn't keep track of their pids, it just sends
++ * SIGHUP to the process group, ignoring it in the root process.
++ * Continue through and you'll be fine.).
++ */
++
++static int one_process = 0;
++
++static apr_pool_t *pconf; /* Pool for config stuff */
++static apr_pool_t *pchild; /* Pool for httpd child stuff */
++
++static pid_t ap_my_pid; /* it seems silly to call getpid all the time */
++static pid_t parent_pid;
++static int my_child_num;
++ap_generation_t volatile ap_my_generation=0;
++
++#ifdef TPF
++int tpf_child = 0;
++char tpf_server_name[INETD_SERVNAME_LENGTH+1];
++#endif /* TPF */
++
++static int die_now = 0;
++
++int grace_children = 0;
++int grace_children_alive = 0;
++int server_env_cleanup = 1;
++
++#ifdef GPROF
++/*
++ * change directory for gprof to plop the gmon.out file
++ * configure in httpd.conf:
++ * GprofDir $RuntimeDir/ -> $ServerRoot/$RuntimeDir/gmon.out
++ * GprofDir $RuntimeDir/% -> $ServerRoot/$RuntimeDir/gprof.$pid/gmon.out
++ */
++static void chdir_for_gprof(void)
++{
++ core_server_config *sconf =
++ ap_get_module_config(ap_server_conf->module_config, &core_module);
++ char *dir = sconf->gprof_dir;
++ const char *use_dir;
++
++ if(dir) {
++ apr_status_t res;
++ char buf[512];
++ int len = strlen(sconf->gprof_dir) - 1;
++ if(*(dir + len) == '%') {
++ dir[len] = '\0';
++ apr_snprintf(buf, sizeof(buf), "%sgprof.%d", dir, (int)getpid());
++ }
++ use_dir = ap_server_root_relative(pconf, buf[0] ? buf : dir);
++ res = apr_dir_make(use_dir, 0755, pconf);
++ if(res != APR_SUCCESS && !APR_STATUS_IS_EEXIST(res)) {
++ ap_log_error(APLOG_MARK, APLOG_ERR, errno, ap_server_conf,
++ "gprof: error creating directory %s", dir);
++ }
++ }
++ else {
++ use_dir = ap_server_root_relative(pconf, DEFAULT_REL_RUNTIMEDIR);
++ }
++
++ chdir(use_dir);
++}
++#else
++#define chdir_for_gprof()
++#endif
++
++char* child_type_string(int type)
++{
++ switch(type)
++ {
++ case CHILD_TYPE_MULTIPLEXER: return "MULTIPLEXER";
++ case CHILD_TYPE_PROCESSOR: return "PROCESSOR";
++ case CHILD_TYPE_WORKER: return "WORKER";
++ }
++
++ return "UNKNOWN";
++}
++
++char* child_status_string(int status)
++{
++ switch(status)
++ {
++ case CHILD_STATUS_STANDBY: return "STANDBY";
++ case CHILD_STATUS_STARTING: return "STARTING";
++ case CHILD_STATUS_READY: return "READY";
++ case CHILD_STATUS_ACTIVE: return "ACTIVE";
++ case CHILD_STATUS_RESTART: return "RESTART";
++ }
++
++ return "UNKNOWN";
++}
++
++void dump_child_table()
++{
++#ifdef MPM_PERUSER_DEBUG
++ int x;
++ server_env_t *senv;
++
++ _DBG("%-3s %-5s %-8s %-12s %-4s %-4s %-25s %5s %6s %7s",
++ "ID", "PID", "STATUS", "TYPE", "UID", "GID", "CHROOT", "INPUT", "OUTPUT", "SOCK_FD");
++
++ for(x = 0; x < NUM_CHILDS; x++)
++ {
++ senv = CHILD_INFO_TABLE[x].senv;
++ _DBG("%-3d %-5d %-8s %-12s %-4d %-4d %-25s %-5d %-6d %-7d",
++ CHILD_INFO_TABLE[x].id,
++ CHILD_INFO_TABLE[x].pid,
++ child_status_string(CHILD_INFO_TABLE[x].status),
++ child_type_string(CHILD_INFO_TABLE[x].type),
++ senv == NULL ? -1 : senv->uid,
++ senv == NULL ? -1 : senv->gid,
++ senv == NULL ? NULL : senv->chroot,
++ senv == NULL ? -1 : CHILD_INFO_TABLE[x].senv->input,
++ senv == NULL ? -1 : CHILD_INFO_TABLE[x].senv->output,
++ CHILD_INFO_TABLE[x].sock_fd);
++ }
++#endif
++}
++
++void dump_server_env_image()
++{
++#ifdef MPM_PERUSER_DEBUG
++ int x;
++ _DBG("%-3s %-7s %-7s", "N", "INPUT", "OUTPUT");
++ for(x = 0; x < NUM_SENV; x++)
++ {
++ _DBG("%-3d %-7d %-7d", x, SENV[x].input, SENV[x].output);
++ }
++#endif
++}
++
++
++/* XXX - I don't know if TPF will ever use this module or not, so leave
++ * the ap_check_signals calls in but disable them - manoj */
++#define ap_check_signals()
++
++/* a clean exit from a child with proper cleanup */
++static inline int clean_child_exit(int code) __attribute__ ((noreturn));
++static inline int clean_child_exit(int code)
++{
++ int retval;
++
++ mpm_state = AP_MPMQ_STOPPING;
++
++ if (CHILD_INFO_TABLE[my_child_num].type != CHILD_TYPE_MULTIPLEXER &&
++ CHILD_INFO_TABLE[my_child_num].senv)
++ {
++ retval = close(CHILD_INFO_TABLE[my_child_num].senv->input);
++ _DBG("close(CHILD_INFO_TABLE[%d].senv->input) = %d",
++ my_child_num, retval);
++
++ retval = close(CHILD_INFO_TABLE[my_child_num].senv->output);
++ _DBG("close(CHILD_INFO_TABLE[%d].senv->output) = %d",
++ my_child_num, retval);
++ }
++
++ if (pchild) {
++ apr_pool_destroy(pchild);
++ }
++ ap_mpm_pod_close(pod);
++ chdir_for_gprof();
++ exit(code);
++}
++
++static void accept_mutex_on(void)
++{
++/* for some reason this fails if we listen on the pipe_of_death.
++ fortunately I don't think we currently need it */
++
++#if 0
++ apr_status_t rv = apr_proc_mutex_lock(accept_mutex);
++ if (rv != APR_SUCCESS) {
++ const char *msg = "couldn't grab the accept mutex";
++
++ if (ap_my_generation !=
++ ap_scoreboard_image->global->running_generation) {
++ ap_log_error(APLOG_MARK, APLOG_DEBUG, rv, NULL, msg);
++ clean_child_exit(0);
++ }
++ else {
++ ap_log_error(APLOG_MARK, APLOG_EMERG, rv, NULL, msg);
++ exit(APEXIT_CHILDFATAL);
++ }
++ }
++#endif
++}
++
++static void accept_mutex_off(void)
++{
++#if 0
++ apr_status_t rv = apr_proc_mutex_unlock(accept_mutex);
++ if (rv != APR_SUCCESS) {
++ const char *msg = "couldn't release the accept mutex";
++
++ if (ap_my_generation !=
++ ap_scoreboard_image->global->running_generation) {
++ ap_log_error(APLOG_MARK, APLOG_DEBUG, rv, NULL, msg);
++ /* don't exit here... we have a connection to
++ * process, after which point we'll see that the
++ * generation changed and we'll exit cleanly
++ */
++ }
++ else {
++ ap_log_error(APLOG_MARK, APLOG_EMERG, rv, NULL, msg);
++ exit(APEXIT_CHILDFATAL);
++ }
++ }
++#endif
++}
++
++/* On some architectures it's safe to do unserialized accept()s in the single
++ * Listen case. But it's never safe to do it in the case where there's
++ * multiple Listen statements. Define SINGLE_LISTEN_UNSERIALIZED_ACCEPT
++ * when it's safe in the single Listen case.
++ */
++#ifdef SINGLE_LISTEN_UNSERIALIZED_ACCEPT
++#define SAFE_ACCEPT(stmt) do {if (ap_listeners->next) {stmt;}} while(0)
++#else
++#define SAFE_ACCEPT(stmt) do {stmt;} while(0)
++#endif
++
++AP_DECLARE(apr_status_t) ap_mpm_query(int query_code, int *result)
++{
++ switch(query_code){
++ case AP_MPMQ_MAX_DAEMON_USED:
++ *result = ap_daemons_limit;
++ return APR_SUCCESS;
++ case AP_MPMQ_IS_THREADED:
++ *result = AP_MPMQ_NOT_SUPPORTED;
++ return APR_SUCCESS;
++ case AP_MPMQ_IS_FORKED:
++ *result = AP_MPMQ_DYNAMIC;
++ return APR_SUCCESS;
++ case AP_MPMQ_HARD_LIMIT_DAEMONS:
++ *result = server_limit;
++ return APR_SUCCESS;
++ case AP_MPMQ_HARD_LIMIT_THREADS:
++ *result = HARD_THREAD_LIMIT;
++ return APR_SUCCESS;
++ case AP_MPMQ_MAX_THREADS:
++ *result = 0;
++ return APR_SUCCESS;
++ case AP_MPMQ_MIN_SPARE_DAEMONS:
++ *result = ap_min_free_processors;
++ return APR_SUCCESS;
++ case AP_MPMQ_MIN_SPARE_THREADS:
++ *result = 0;
++ return APR_SUCCESS;
++ case AP_MPMQ_MAX_SPARE_THREADS:
++ *result = 0;
++ return APR_SUCCESS;
++ case AP_MPMQ_MAX_REQUESTS_DAEMON:
++ *result = ap_max_requests_per_child;
++ return APR_SUCCESS;
++ case AP_MPMQ_MAX_DAEMONS:
++ *result = server_limit;
++ return APR_SUCCESS;
++ case AP_MPMQ_MPM_STATE:
++ *result = mpm_state;
++ return APR_SUCCESS;
++ }
++ return APR_ENOTIMPL;
++}
++
++#if defined(NEED_WAITPID)
++/*
++ Systems without a real waitpid sometimes lose a child's exit while waiting
++ for another. Search through the scoreboard for missing children.
++ */
++int reap_children(int *exitcode, apr_exit_why_e *status)
++{
++ int n, pid;
++
++ for (n = 0; n < ap_max_daemons_limit; ++n) {
++ if (ap_scoreboard_image->servers[n][0].status != SERVER_DEAD &&
++ kill((pid = ap_scoreboard_image->parent[n].pid), 0) == -1) {
++ ap_update_child_status_from_indexes(n, 0, SERVER_DEAD, NULL);
++ /* just mark it as having a successful exit status */
++ *status = APR_PROC_EXIT;
++ *exitcode = 0;
++ return(pid);
++ }
++ }
++ return 0;
++}
++#endif
++
++/* handle all varieties of core dumping signals */
++static void sig_coredump(int sig)
++{
++ int retval;
++ retval = chdir(ap_coredump_dir);
++ apr_signal(sig, SIG_DFL);
++ if (ap_my_pid == parent_pid) {
++ ap_log_error(APLOG_MARK, APLOG_NOTICE,
++ 0, ap_server_conf,
++ "seg fault or similar nasty error detected "
++ "in the parent process");
++ }
++ kill(getpid(), sig);
++ /* At this point we've got sig blocked, because we're still inside
++ * the signal handler. When we leave the signal handler it will
++ * be unblocked, and we'll take the signal... and coredump or whatever
++ * is appropriate for this particular Unix. In addition the parent
++ * will see the real signal we received -- whereas if we called
++ * abort() here, the parent would only see SIGABRT.
++ */
++}
++
++/*****************************************************************
++ * Connection structures and accounting...
++ */
++
++static void just_die(int sig)
++{
++_DBG("function called");
++ clean_child_exit(0);
++}
++
++/* volatile just in case */
++static int volatile shutdown_pending;
++static int volatile restart_pending;
++static int volatile is_graceful;
++/* XXX static int volatile child_fatal; */
++
++static void sig_term(int sig)
++{
++ if (shutdown_pending == 1) {
++ /* Um, is this _probably_ not an error, if the user has
++ * tried to do a shutdown twice quickly, so we won't
++ * worry about reporting it.
++ */
++ return;
++ }
++ shutdown_pending = 1;
++}
++
++/* restart() is the signal handler for SIGHUP and AP_SIG_GRACEFUL
++ * in the parent process, unless running in ONE_PROCESS mode
++ */
++static void restart(int sig)
++{
++ if (restart_pending == 1) {
++ /* Probably not an error - don't bother reporting it */
++ return;
++ }
++ restart_pending = 1;
++ is_graceful = (sig == AP_SIG_GRACEFUL);
++}
++
++/* Sets die_now if we received a character on the pipe_of_death */
++static apr_status_t check_pipe_of_death
++(
++ void **csd,
++ ap_listen_rec *lr,
++ apr_pool_t *ptrans
++)
++{
++ int ret;
++ char pipe_read_char;
++ apr_size_t n = 1;
++
++ _DBG("WATCH: die_now=%d", die_now);
++
++ if (die_now) return APR_SUCCESS;
++
++ /* apr_thread_mutex_lock(pipe_of_death_mutex); */
++ ret = apr_socket_recv(lr->sd, &pipe_read_char, &n);
++ if (APR_STATUS_IS_EAGAIN(ret))
++ {
++ /* It lost the lottery. It must continue to suffer
++ * through a life of servitude. */
++ }
++ else
++ {
++ if (pipe_read_char != AP_PERUSER_CHAR_OF_DEATH)
++ {
++ _DBG("got wrong char %c", pipe_read_char);
++ return APR_SUCCESS;
++ }
++ /* It won the lottery (or something else is very
++ * wrong). Embrace death with open arms. */
++ die_now = 1;
++ _DBG("WATCH: die_now=%d", die_now);
++ }
++ /* apr_thread_mutex_unlock(pipe_of_death_mutex); */
++ return APR_SUCCESS;
++}
++
++static void set_signals(void)
++{
++#ifndef NO_USE_SIGACTION
++ struct sigaction sa;
++
++ sigemptyset(&sa.sa_mask);
++ sa.sa_flags = 0;
++
++ if (!one_process) {
++ sa.sa_handler = sig_coredump;
++#if defined(SA_ONESHOT)
++ sa.sa_flags = SA_ONESHOT;
++#elif defined(SA_RESETHAND)
++ sa.sa_flags = SA_RESETHAND;
++#endif
++ if (sigaction(SIGSEGV, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGSEGV)");
++#ifdef SIGBUS
++ if (sigaction(SIGBUS, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGBUS)");
++#endif
++#ifdef SIGABORT
++ if (sigaction(SIGABORT, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGABORT)");
++#endif
++#ifdef SIGABRT
++ if (sigaction(SIGABRT, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGABRT)");
++#endif
++#ifdef SIGILL
++ if (sigaction(SIGILL, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGILL)");
++#endif
++ sa.sa_flags = 0;
++ }
++ sa.sa_handler = sig_term;
++ if (sigaction(SIGTERM, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGTERM)");
++#ifdef SIGINT
++ if (sigaction(SIGINT, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGINT)");
++#endif
++#ifdef SIGXCPU
++ sa.sa_handler = SIG_DFL;
++ if (sigaction(SIGXCPU, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGXCPU)");
++#endif
++#ifdef SIGXFSZ
++ sa.sa_handler = SIG_IGN;
++ if (sigaction(SIGXFSZ, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGXFSZ)");
++#endif
++#ifdef SIGPIPE
++ sa.sa_handler = SIG_IGN;
++ if (sigaction(SIGPIPE, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGPIPE)");
++#endif
++
++ /* we want to ignore HUPs and AP_SIG_GRACEFUL while we're busy
++ * processing one */
++ sigaddset(&sa.sa_mask, SIGHUP);
++ sigaddset(&sa.sa_mask, AP_SIG_GRACEFUL);
++ sa.sa_handler = restart;
++ if (sigaction(SIGHUP, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGHUP)");
++ if (sigaction(AP_SIG_GRACEFUL, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(" AP_SIG_GRACEFUL_STRING ")");
++#else
++ if (!one_process) {
++ apr_signal(SIGSEGV, sig_coredump);
++#ifdef SIGBUS
++ apr_signal(SIGBUS, sig_coredump);
++#endif /* SIGBUS */
++#ifdef SIGABORT
++ apr_signal(SIGABORT, sig_coredump);
++#endif /* SIGABORT */
++#ifdef SIGABRT
++ apr_signal(SIGABRT, sig_coredump);
++#endif /* SIGABRT */
++#ifdef SIGILL
++ apr_signal(SIGILL, sig_coredump);
++#endif /* SIGILL */
++#ifdef SIGXCPU
++ apr_signal(SIGXCPU, SIG_DFL);
++#endif /* SIGXCPU */
++#ifdef SIGXFSZ
++ apr_signal(SIGXFSZ, SIG_DFL);
++#endif /* SIGXFSZ */
++ }
++
++ apr_signal(SIGTERM, sig_term);
++#ifdef SIGHUP
++ apr_signal(SIGHUP, restart);
++#endif /* SIGHUP */
++#ifdef AP_SIG_GRACEFUL
++ apr_signal(AP_SIG_GRACEFUL, restart);
++#endif /* AP_SIG_GRACEFUL */
++#ifdef SIGPIPE
++ apr_signal(SIGPIPE, SIG_IGN);
++#endif /* SIGPIPE */
++
++#endif
++}
++
++/*****************************************************************
++ * Child process main loop.
++ * The following vars are static to avoid getting clobbered by longjmp();
++ * they are really private to child_main.
++ */
++
++static int requests_this_child;
++static int num_listensocks = 0;
++static ap_listen_rec *listensocks;
++
++int ap_graceful_stop_signalled(void)
++{
++ /* not ever called anymore... */
++ return 0;
++}
++
++/*
++ * This function sends a raw socket over to a processor. It uses the same
++ * on-wire format as pass_request. The recipient can determine if he got
++ * a socket or a whole request by inspecting the header_length of the
++ * message. If it is zero then only a socket was sent.
++ */
++static int pass_socket(apr_socket_t *thesock, child_info_t *processor, apr_pool_t *pool)
++{
++ int rv;
++ struct msghdr msg;
++ struct cmsghdr *cmsg;
++ apr_sockaddr_t *remote_addr;
++ int sock_fd;
++ char *body = "";
++ struct iovec iov[5];
++ apr_size_t header_len = 0;
++ apr_size_t body_len = 0;
++ peruser_header h;
++
++ if (!processor)
++ {
++ _DBG("server %s in child %d has no child_info associated",
++ "(unkonwn)", my_child_num);
++ return -1;
++ }
++
++ _DBG("passing request to another child.", 0);
++
++ apr_os_sock_get(&sock_fd, thesock);
++ /* passing remote_addr too, see comments below */
++ apr_socket_addr_get(&remote_addr, APR_REMOTE, thesock);
++
++ header_len = 0;
++ body_len = 0;
++
++ iov[0].iov_base = &header_len;
++ iov[0].iov_len = sizeof(header_len);
++ iov[1].iov_base = &body_len;
++ iov[1].iov_len = sizeof(body_len);
++ iov[2].iov_base = remote_addr;
++ iov[2].iov_len = sizeof(*remote_addr);
++ iov[3].iov_base = h.headers;
++ iov[3].iov_len = 0;
++ iov[4].iov_base = body;
++ iov[4].iov_len = body_len;
++
++ msg.msg_name = NULL;
++ msg.msg_namelen = 0;
++ msg.msg_iov = iov;
++ msg.msg_iovlen = 5;
++
++ cmsg = apr_palloc(pool, sizeof(*cmsg) + sizeof(sock_fd));
++ cmsg->cmsg_len = sizeof(*cmsg) + sizeof(sock_fd);
++ cmsg->cmsg_level = SOL_SOCKET;
++ cmsg->cmsg_type = SCM_RIGHTS;
++
++ memcpy(CMSG_DATA(cmsg), &sock_fd, sizeof(sock_fd));
++
++ msg.msg_control = cmsg;
++ msg.msg_controllen = cmsg->cmsg_len;
++
++ if (processor->status == CHILD_STATUS_STANDBY)
++ {
++ _DBG("Activating child #%d", processor->id);
++ processor->status = CHILD_STATUS_STARTING;
++ }
++
++ _DBG("Writing message to %d, passing sock_fd: %d", processor->senv->output, sock_fd);
++ _DBG("header_len=%d headers=\"%s\"", header_len, h.headers);
++ _DBG("body_len=%d body=\"%s\"", body_len, body);
++
++ if ((rv = sendmsg(processor->senv->output, &msg, 0)) == -1)
++ {
++ apr_pool_destroy(pool);
++ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
++ "Writing message failed %d %d", rv, errno);
++ return -1;
++ }
++
++ _DBG("Writing message succeeded %d", rv);
++
++ /* -- close the socket on our side -- */
++ _DBG("closing socket %d on our side", sock_fd);
++ apr_socket_close(thesock);
++
++ apr_pool_destroy(pool);
++ return 1;
++}
++
++static void process_socket(apr_pool_t *p, apr_socket_t *sock, long conn_id,
++ apr_bucket_alloc_t *bucket_alloc, apr_pool_t *pool)
++{
++ conn_rec *current_conn;
++ int sock_fd;
++ apr_status_t rv;
++ ap_sb_handle_t *sbh;
++ child_info_t *processor;
++ apr_pool_t *ptrans;
++ peruser_server_conf *sconf;
++
++ _DBG("Creating dummy connection to use the vhost lookup api", 0);
++
++ ap_create_sb_handle(&sbh, p, conn_id, 0);
++ current_conn = ap_run_create_connection(p, ap_server_conf, sock, conn_id,
++ sbh, bucket_alloc);
++ _DBG("Looking up the right vhost");
++ if (current_conn) {
++ ap_update_vhost_given_ip(current_conn);
++ _DBG("Base server is %s, name based vhosts %s", current_conn->base_server->server_hostname,
++ current_conn->vhost_lookup_data ? "on" : "off");
++ }
++
++ if (current_conn && !current_conn->vhost_lookup_data && CHILD_INFO_TABLE[my_child_num].type == CHILD_TYPE_MULTIPLEXER) {
++ _DBG("We are not using name based vhosts, we'll directly pass the socket.");
++
++ sconf = PERUSER_SERVER_CONF(current_conn->base_server->module_config);
++ processor = &CHILD_INFO_TABLE[sconf->senv->processor_id];
++
++ _DBG("Forwarding without further inspection, processor %d", processor->id);
++ if (processor->status == CHILD_STATUS_STANDBY)
++ {
++ _DBG("Activating child #%d", processor->id);
++ processor->status = CHILD_STATUS_STARTING;
++ }
++
++ _DBG("Creating new pool",0);
++ apr_pool_create(&ptrans, pool);
++ _DBG("Passing request.",0);
++ if (pass_socket(sock, processor, ptrans) == -1)
++ {
++ ap_log_error(APLOG_MARK, APLOG_ERR, 0,
++ ap_server_conf, "Could not pass request to proper "
++ "child, request will not be honoured.");
++ return;
++ }
++ if (current_conn)
++ {
++ _DBG("freeing connection",0);
++ ap_lingering_close(current_conn);
++ }
++ _DBG("doing longjmp",0);
++ longjmp(CHILD_INFO_TABLE[my_child_num].jmpbuffer, 1);
++ return;
++ }
++
++ if ((rv = apr_os_sock_get(&sock_fd, sock)) != APR_SUCCESS)
++ {
++ ap_log_error(APLOG_MARK, APLOG_ERR, rv, NULL, "apr_os_sock_get");
++ }
++
++ _DBG("child_num=%d sock=%ld sock_fd=%d\n", my_child_num, sock, sock_fd);
++ _DBG("type=%s %d", child_type_string(CHILD_INFO_TABLE[my_child_num].type), my_child_num);
++
++ if (sock_fd >= FD_SETSIZE)
++ {
++ ap_log_error(APLOG_MARK, APLOG_WARNING, 0, NULL,
++ "new file descriptor %d is too large; you probably need "
++ "to rebuild Apache with a larger FD_SETSIZE "
++ "(currently %d)",
++ sock_fd, FD_SETSIZE);
++ apr_socket_close(sock);
++ _DBG("child_num=%d: exiting with error", my_child_num);
++ return;
++ }
++
++ if (CHILD_INFO_TABLE[my_child_num].sock_fd < 0)
++ {
++ ap_sock_disable_nagle(sock);
++ }
++
++ if (!current_conn) {
++ ap_create_sb_handle(&sbh, p, conn_id, 0);
++ current_conn = ap_run_create_connection(p, ap_server_conf, sock, conn_id,
++ sbh, bucket_alloc);
++ }
++
++ if (current_conn)
++ {
++ ap_process_connection(current_conn, sock);
++ ap_lingering_close(current_conn);
++ }
++}
++
++static int peruser_process_connection(conn_rec *conn)
++{
++ ap_filter_t *filter;
++ apr_bucket_brigade *bb;
++ core_net_rec *net;
++
++ _DBG("function entered",0);
++
++ /* -- fetch our sockets from the pool -- */
++ apr_pool_userdata_get((void **)&bb, "PERUSER_SOCKETS", conn->pool);
++ if (bb != NULL)
++ {
++ /* -- find the 'core' filter and give the socket data to it -- */
++ for (filter = conn->output_filters; filter != NULL; filter = filter->next)
++ {
++ if (!strcmp(filter->frec->name, "core")) break;
++ }
++ if (filter != NULL)
++ {
++ net = filter->ctx;
++ net->in_ctx = apr_palloc(conn->pool, sizeof(*net->in_ctx));
++ net->in_ctx->b = bb;
++ net->in_ctx->tmpbb = apr_brigade_create(net->in_ctx->b->p,
++ net->in_ctx->b->bucket_alloc);
++ }
++ }
++ _DBG("leaving (DECLINED)", 0);
++ return DECLINED;
++}
++
++static int total_processors(int child_num)
++{
++ int i, total;
++
++ for(i = 0, total = 0; i < NUM_CHILDS; ++i)
++ {
++ if(CHILD_INFO_TABLE[i].senv == CHILD_INFO_TABLE[child_num].senv)
++ total++;
++ }
++
++ return total;
++}
++
++static int idle_processors(int child_num)
++{
++ int i, total;
++
++ for(i = 0, total = 0; i < NUM_CHILDS; ++i)
++ {
++ if(CHILD_INFO_TABLE[i].senv == CHILD_INFO_TABLE[child_num].senv &&
++ (SCOREBOARD_STATUS(i) == SERVER_STARTING ||
++ SCOREBOARD_STATUS(i) == SERVER_READY))
++ {
++ total++;
++ }
++ }
++
++ return total;
++}
++
++static int pass_request(request_rec *r, child_info_t *processor)
++{
++ int rv;
++ struct msghdr msg;
++ struct cmsghdr *cmsg;
++ apr_sockaddr_t *remote_addr;
++ int sock_fd;
++ char *body = "";
++ struct iovec iov[5];
++ conn_rec *c = r->connection;
++ apr_bucket_brigade *bb = apr_brigade_create(r->pool, c->bucket_alloc);
++ apr_bucket_brigade *body_bb = NULL;
++ apr_size_t len = 0;
++ apr_size_t header_len = 0;
++ apr_size_t body_len = 0;
++ peruser_header h;
++ apr_bucket *bucket;
++ const apr_array_header_t *headers_in_array;
++ const apr_table_entry_t *headers_in;
++ int counter;
++
++ apr_socket_t *thesock = ap_get_module_config(r->connection->conn_config, &core_module);
++
++ if ((!r->the_request) || (!strlen(r->the_request)))
++ {
++ _DBG("empty request. dropping it (%ld)", r->the_request);
++ return -1;
++ }
++
++ if (!processor)
++ {
++ _DBG("server %s in child %d has no child_info associated",
++ r->hostname, my_child_num);
++ return -1;
++ }
++
++ _DBG("passing request to another child. Vhost: %s, child %d %d",
++ apr_table_get(r->headers_in, "Host"), my_child_num, processor->senv->output);
++ _DBG("r->the_request=\"%s\" len=%d", r->the_request, strlen(r->the_request));
++
++ ap_get_brigade(r->connection->input_filters, bb, AP_MODE_EXHAUSTIVE, APR_NONBLOCK_READ, len);
++
++ /* Scan the brigade looking for heap-buckets */
++
++ _DBG("Scanning the brigade",0);
++ bucket = APR_BRIGADE_FIRST(bb);
++ while (bucket != APR_BRIGADE_SENTINEL(bb) &&
++ APR_BUCKET_IS_HEAP(bucket)) {
++ _DBG("HEAP BUCKET is found, length=%d", bucket->length);
++ bucket = APR_BUCKET_NEXT(bucket);
++ if (!APR_BUCKET_IS_HEAP(bucket)) {
++ _DBG("NON-HEAP BUCKET is found, extracting the part of brigade before it",0);
++ body_bb = bb;
++ bb = apr_brigade_split(body_bb, bucket);
++ /* Do we need to apr_destroy_brigade(bb) here?
++ * Yeah, I know we do apr_pool_destroy(r->pool) before return, but
++ * ap_get_brigade is in non-blocking mode (however len is zero).
++ */
++ if (apr_brigade_pflatten(body_bb, &body, &body_len, r->pool) != APR_SUCCESS) {
++ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
++ "Unable to flatten brigade, declining request");
++ apr_pool_destroy(r->pool);
++ return DECLINED;
++ }
++ _DBG("Brigade is flattened as body (body_len=%d)", body_len);
++ }
++ }
++ _DBG("Scanning is finished",0);
++
++ apr_os_sock_get(&sock_fd, thesock);
++ /* looks like a bug while sending/receiving SCM_RIGHTS related to ipv6
++ workaround: send remote_addr structure too */
++ apr_socket_addr_get(&remote_addr, APR_REMOTE, thesock);
++
++ h.p = r->pool;
++
++ headers_in_array = apr_table_elts(r->headers_in);
++ headers_in = (const apr_table_entry_t *) headers_in_array->elts;
++
++ h.headers = apr_pstrcat(h.p, r->the_request, CRLF, NULL);
++ for (counter = 0; counter < headers_in_array->nelts; counter++) {
++ if (headers_in[counter].key == NULL
++ || headers_in[counter].val == NULL) {
++ continue;
++ }
++ h.headers = apr_pstrcat(h.p, h.headers, headers_in[counter].key, ": ",
++ headers_in[counter].val, CRLF, NULL);
++
++ }
++ h.headers = apr_pstrcat(h.p, h.headers, CRLF, NULL);
++ ap_xlate_proto_to_ascii(h.headers, strlen(h.headers));
++
++ header_len = strlen(h.headers);
++
++ iov[0].iov_base = &header_len;
++ iov[0].iov_len = sizeof(header_len);
++ iov[1].iov_base = &body_len;
++ iov[1].iov_len = sizeof(body_len);
++ iov[2].iov_base = remote_addr;
++ iov[2].iov_len = sizeof(*remote_addr);
++ iov[3].iov_base = h.headers;
++ iov[3].iov_len = strlen(h.headers) + 1;
++ iov[4].iov_base = body;
++ iov[4].iov_len = body_len;
++
++ msg.msg_name = NULL;
++ msg.msg_namelen = 0;
++ msg.msg_iov = iov;
++ msg.msg_iovlen = 5;
++
++ cmsg = apr_palloc(r->pool, sizeof(*cmsg) + sizeof(sock_fd));
++ cmsg->cmsg_len = sizeof(*cmsg) + sizeof(sock_fd);
++ cmsg->cmsg_level = SOL_SOCKET;
++ cmsg->cmsg_type = SCM_RIGHTS;
++
++ memcpy(CMSG_DATA(cmsg), &sock_fd, sizeof(sock_fd));
++
++ msg.msg_control = cmsg;
++ msg.msg_controllen = cmsg->cmsg_len;
++
++
++ if (processor->status == CHILD_STATUS_STANDBY)
++ {
++ _DBG("Activating child #%d", processor->id);
++ processor->status = CHILD_STATUS_STARTING;
++ }
++
++ _DBG("Writing message to %d, passing sock_fd: %d", processor->senv->output, sock_fd);
++ _DBG("header_len=%d headers=\"%s\"", header_len, h.headers);
++ _DBG("body_len=%d body=\"%s\"", body_len, body);
++
++ if ((rv = sendmsg(processor->senv->output, &msg, 0)) == -1)
++ {
++ apr_pool_destroy(r->pool);
++ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
++ "Writing message failed %d %d", rv, errno);
++ return -1;
++ }
++
++ _DBG("Writing message succeeded %d", rv);
++
++ /* -- close the socket on our side -- */
++ _DBG("closing socket %d on our side", sock_fd);
++ apr_socket_close(thesock);
++
++ apr_pool_destroy(r->pool);
++ return 1;
++}
++
++
++static apr_status_t receive_from_multiplexer(
++ void **trans_sock, /* will be filled out w/ the received socket */
++ ap_listen_rec *lr, /* listener to receive from */
++ apr_pool_t *ptrans /* transaction wide pool */
++)
++{
++ struct msghdr msg;
++ struct cmsghdr *cmsg;
++ char buff[HUGE_STRING_LEN] = "";
++ char headers[HUGE_STRING_LEN] = "";
++ char *body = "";
++ apr_size_t header_len, body_len;
++ struct iovec iov[4];
++ int ret, fd_tmp;
++ apr_os_sock_t ctrl_sock_fd;
++ apr_os_sock_t trans_sock_fd;
++ apr_sockaddr_t remote_addr;
++ apr_os_sock_info_t sockinfo;
++
++ /* -- bucket's, brigades and their allocators */
++ apr_bucket_alloc_t *alloc = apr_bucket_alloc_create(ptrans);
++ apr_bucket_brigade *bb = apr_brigade_create(ptrans, alloc);
++ apr_bucket *bucket;
++
++ /* prepare the buffers for receiving data from remote side */
++ iov[0].iov_base = &header_len;
++ iov[0].iov_len = sizeof(header_len);
++ iov[1].iov_base = &body_len;
++ iov[1].iov_len = sizeof(body_len);
++ iov[2].iov_base = &remote_addr;
++ iov[2].iov_len = sizeof(remote_addr);
++ iov[3].iov_base = (char*)&buff;
++ iov[3].iov_len = HUGE_STRING_LEN;
++
++ cmsg = apr_palloc(ptrans, sizeof(*cmsg) + sizeof(trans_sock_fd));
++ cmsg->cmsg_len = sizeof(*cmsg) + sizeof(trans_sock_fd);
++
++ msg.msg_name = NULL;
++ msg.msg_namelen = 0;
++ msg.msg_iov = iov;
++ msg.msg_iovlen = 4;
++ msg.msg_control = cmsg;
++ msg.msg_controllen = cmsg->cmsg_len;
++
++ /* -- receive data from socket -- */
++ apr_os_sock_get(&ctrl_sock_fd, lr->sd);
++ _DBG("receiving from sock_fd=%d", ctrl_sock_fd);
++ ret = recvmsg(ctrl_sock_fd, &msg, 0);
++
++ if(ret == -1)
++ _DBG("recvmsg failed with error \"%s\"", strerror(errno));
++ else
++ _DBG("recvmsg returned %d", ret);
++
++ /* -- extract socket from the cmsg -- */
++ memcpy(&trans_sock_fd, CMSG_DATA(cmsg), sizeof(trans_sock_fd));
++ /* here *trans_sock always == NULL (socket reset at got_fd), so
++ we can use apr_os_sock_make() instead of apr_os_sock_put() */
++ sockinfo.os_sock = &trans_sock_fd;
++ sockinfo.local = NULL;
++ sockinfo.remote = (struct sockaddr *)&remote_addr.sa.sin;
++ sockinfo.family = remote_addr.family;
++ sockinfo.type = SOCK_STREAM;
++#ifdef APR_ENABLE_FOR_1_0
++ sockinfo.protocol = 0;
++#endif
++ apr_os_sock_make((apr_socket_t **)trans_sock, &sockinfo, ptrans);
++ apr_os_sock_get(&fd_tmp, *trans_sock);
++
++ _DBG("trans_sock=%ld fdx=%d sock_fd=%d",
++ *trans_sock, trans_sock_fd, fd_tmp);
++
++ apr_cpystrn(headers, buff, header_len + 1);
++ _DBG("header_len=%d headers=\"%s\"", header_len, headers);
++
++if (header_len) {
++ _DBG("header_len > 0, we got a request", 0);
++ /* -- store received data into an brigade and add
++ it to the current transaction's pool -- */
++ bucket = apr_bucket_eos_create(alloc);
++ APR_BRIGADE_INSERT_HEAD(bb, bucket);
++ bucket = apr_bucket_socket_create(*trans_sock, alloc);
++ APR_BRIGADE_INSERT_HEAD(bb, bucket);
++
++ if (body_len) {
++ body = (char*)&buff[header_len + 1];
++ _DBG("body_len=%d body=\"%s\"", body_len, body);
++
++ bucket = apr_bucket_heap_create(body, body_len, NULL, alloc);
++ APR_BRIGADE_INSERT_HEAD(bb, bucket);
++ } else {
++ _DBG("There is no body",0);
++ }
++
++ bucket = apr_bucket_heap_create(headers, header_len, NULL, alloc);
++
++ APR_BRIGADE_INSERT_HEAD(bb, bucket);
++ apr_pool_userdata_set(bb, "PERUSER_SOCKETS", NULL, ptrans);
++} else {
++ _DBG("header_len == 0, we got a socket only", 0);
++}
++ _DBG("returning 0", 0);
++ return 0;
++}
++
++
++/* Set group privileges.
++ *
++ * Note that we use the username as set in the config files, rather than
++ * the lookup of to uid --- the same uid may have multiple passwd entries,
++ * with different sets of groups for each.
++ */
++
++static int set_group_privs(uid_t uid, gid_t gid)
++{
++ if (!geteuid())
++ {
++ struct passwd *ent;
++ const char *name;
++
++ /*
++ * Set the GID before initgroups(), since on some platforms
++ * setgid() is known to zap the group list.
++ */
++ if (setgid(gid) == -1)
++ {
++ ap_log_error(APLOG_MARK, APLOG_ALERT, errno, NULL,
++ "setgid: unable to set group id to Group %u",
++ (unsigned)gid);
++ return -1;
++ }
++
++ /* if getpwuid() fails, just skip initgroups() */
++
++ if ((ent = getpwuid(uid)) != NULL)
++ {
++ name = ent->pw_name;
++
++ /* Reset `groups' attributes. */
++
++ if (initgroups(name, gid) == -1)
++ {
++ ap_log_error(APLOG_MARK, APLOG_ALERT, errno, NULL,
++ "initgroups: unable to set groups for User %s "
++ "and Group %u", name, (unsigned)gid);
++ return -1;
++ }
++ }
++ }
++ return 0;
++}
++
++static int peruser_setup_child(int childnum)
++{
++ server_env_t *senv = CHILD_INFO_TABLE[childnum].senv;
++
++ if(senv->chroot) {
++ _DBG("chdir to %s", senv->chroot);
++ if(chdir(senv->chroot)) {
++ ap_log_error(APLOG_MARK, APLOG_ALERT, errno, NULL,
++ "chdir: unable to change to directory: %s",
++ senv->chroot);
++ return -1;
++ }
++
++ _DBG("chroot to %s", senv->chroot);
++ if(chroot(senv->chroot)) {
++ ap_log_error(APLOG_MARK, APLOG_ALERT, errno, NULL,
++ "chroot: unable to change root to: %s",
++ senv->chroot);
++ return -1;
++ }
++ }
++
++ if (senv->uid == -1 && senv->gid == -1) {
++ return unixd_setup_child();
++ }
++ if (set_group_privs(senv->uid, senv->gid)) {
++ return -1;
++ }
++ /* Only try to switch if we're running as root */
++ if (!geteuid()
++ && (
++#ifdef _OSD_POSIX
++ os_init_job_environment(ap_server_conf, unixd_config.user_name,
++ one_process) != 0 ||
++#endif
++ setuid(senv->uid) == -1)) {
++ ap_log_error(APLOG_MARK, APLOG_ALERT, errno, NULL,
++ "setuid: unable to change to uid: %ld",
++ (long) senv->uid);
++ return -1;
++ }
++ return 0;
++}
++
++static int check_signal(int signum)
++{
++ _DBG("signum=%d", signum);
++ switch (signum) {
++ case SIGTERM:
++ case SIGINT:
++ just_die(signum);
++ return 1;
++ }
++ return 0;
++}
++
++/* Send a single HTTP header field to the client. Note that this function
++ * is used in calls to table_do(), so their interfaces are co-dependent.
++ * In other words, don't change this one without checking table_do in alloc.c.
++ * It returns true unless there was a write error of some kind.
++ */
++static int peruser_header_field(peruser_header *h,
++ const char *fieldname, const char *fieldval)
++{
++ apr_pstrcat(h->p, h->headers, fieldname, ": ", fieldval, CRLF, NULL);
++ return 1;
++}
++
++static inline ap_listen_rec* listen_add(apr_pool_t* pool, apr_socket_t *sock, void* accept_func)
++{
++ ap_listen_rec *lr_walk, *lr_new;
++
++ _DBG("function entered", 0);
++ /* -- create an new listener for this child -- */
++ lr_new = apr_palloc(pool, sizeof(*lr_new));
++ lr_new->sd = sock;
++ lr_new->active = 1;
++ lr_new->accept_func = accept_func;
++ lr_new->next = NULL;
++
++ /* -- add the new listener_rec into the list -- */
++ /* FIXME: should we somehow lock this list ? */
++ lr_walk = ap_listeners;
++ if (lr_walk)
++ {
++ while (lr_walk->next) lr_walk = lr_walk->next;
++ lr_walk->next = lr_new;
++ }
++ else
++ {
++ ap_listeners = lr_walk = lr_new;
++ }
++ num_listensocks++;
++ return lr_new;
++}
++
++static inline void listen_clear()
++{
++ ap_listen_rec *lr_walk;
++
++ _DBG("function entered", 0);
++
++ /* FIXME: should we somehow lock this list ? */
++ while (ap_listeners)
++ {
++ lr_walk = ap_listeners->next;
++ apr_socket_close(ap_listeners->sd);
++ ap_listeners = lr_walk;
++ }
++ num_listensocks=0;
++}
++
++apr_status_t cleanup_child_info(void *d)
++{
++ if (child_info_image == NULL) {
++ return APR_SUCCESS;
++ }
++
++ free(child_info_image);
++ child_info_image = NULL;
++ apr_shm_destroy(child_info_shm);
++
++ return APR_SUCCESS;
++}
++
++apr_status_t cleanup_server_environments(void *d)
++{
++ if (server_env_image == NULL) {
++ return APR_SUCCESS;
++ }
++
++ free(server_env_image);
++ server_env_image = NULL;
++ apr_shm_destroy(server_env_shm);
++
++ return APR_SUCCESS;
++}
++
++static const char* child_clone();
++
++static void child_main(int child_num_arg)
++{
++ apr_pool_t *ptrans;
++ apr_allocator_t *allocator;
++ conn_rec *current_conn;
++ apr_status_t status = APR_EINIT;
++ int i;
++ ap_listen_rec *lr;
++ int curr_pollfd, last_pollfd = 0;
++ apr_pollfd_t *pollset;
++ int offset;
++ ap_sb_handle_t *sbh;
++ apr_status_t rv;
++ apr_bucket_alloc_t *bucket_alloc;
++ int fd;
++ apr_socket_t *sock = NULL;
++ apr_socket_t *pod_sock = NULL;
++
++ mpm_state = AP_MPMQ_STARTING; /* for benefit of any hooks that run as this
++ * child initializes
++ */
++
++ my_child_num = child_num_arg;
++ ap_my_pid = getpid();
++ requests_this_child = 0;
++
++ _DBG("sock_fd_in=%d sock_fd_out=%d",
++ CHILD_INFO_TABLE[my_child_num].senv->input,
++ CHILD_INFO_TABLE[my_child_num].senv->output);
++
++ /* Get a sub context for global allocations in this child, so that
++ * we can have cleanups occur when the child exits.
++ */
++ apr_allocator_create(&allocator);
++ apr_allocator_max_free_set(allocator, ap_max_mem_free);
++ apr_pool_create_ex(&pchild, pconf, NULL, allocator);
++ apr_allocator_owner_set(allocator, pchild);
++
++ apr_pool_create(&ptrans, pchild);
++ apr_pool_tag(ptrans, "transaction");
++
++ /* needs to be done before we switch UIDs so we have permissions */
++ ap_reopen_scoreboard(pchild, NULL, 0);
++
++ rv = apr_proc_mutex_child_init(&accept_mutex, ap_lock_fname, pchild);
++ if (rv != APR_SUCCESS) {
++ ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,
++ "Couldn't initialize cross-process lock in child");
++ clean_child_exit(APEXIT_CHILDFATAL);
++ }
++
++ switch(CHILD_INFO_TABLE[my_child_num].type)
++ {
++ case CHILD_TYPE_MULTIPLEXER:
++ _DBG("MULTIPLEXER %d", my_child_num);
++
++ /* update status on processors that are ready to accept requests */
++ _DBG("updating processor stati", 0);
++ for(i = 0; i < NUM_CHILDS; ++i)
++ {
++ if(CHILD_INFO_TABLE[i].status == CHILD_STATUS_READY)
++ CHILD_INFO_TABLE[i].status = CHILD_STATUS_ACTIVE;
++ }
++
++ break;
++
++ case CHILD_TYPE_PROCESSOR:
++ case CHILD_TYPE_WORKER:
++ _DBG("%s %d", child_type_string(CHILD_INFO_TABLE[my_child_num].type), my_child_num);
++
++ /* -- create new listener to receive from multiplexer -- */
++ apr_os_sock_put(&sock, &CHILD_INFO_TABLE[my_child_num].senv->input, pconf);
++ listen_clear();
++ listen_add(pconf, sock, receive_from_multiplexer);
++
++ break;
++
++ default:
++ _DBG("unspecified child type for %d sleeping a while ...", my_child_num);
++ sleep(5);
++ return;
++ }
++
++ apr_os_file_get(&fd, pipe_of_death_in);
++ apr_os_sock_put(&pod_sock, &fd, pconf);
++ listen_add(pconf, pod_sock, check_pipe_of_death);
++
++ if(peruser_setup_child(my_child_num) != 0)
++ clean_child_exit(APEXIT_CHILDFATAL);
++
++ ap_run_child_init(pchild, ap_server_conf);
++
++ ap_create_sb_handle(&sbh, pchild, my_child_num, 0);
++ (void) ap_update_child_status(sbh, SERVER_READY, (request_rec *) NULL);
++
++ /* Set up the pollfd array */
++ listensocks = apr_pcalloc(pchild,
++ sizeof(*listensocks) * (num_listensocks));
++ for (lr = ap_listeners, i = 0; i < num_listensocks; lr = lr->next, i++) {
++ listensocks[i].accept_func = lr->accept_func;
++ listensocks[i].sd = lr->sd;
++ }
++
++ pollset = apr_palloc(pchild, sizeof(*pollset) * num_listensocks);
++ pollset[0].p = pchild;
++ for (i = 0; i < num_listensocks; i++) {
++ pollset[i].desc.s = listensocks[i].sd;
++ pollset[i].desc_type = APR_POLL_SOCKET;
++ pollset[i].reqevents = APR_POLLIN;
++ }
++
++ mpm_state = AP_MPMQ_RUNNING;
++
++ bucket_alloc = apr_bucket_alloc_create(pchild);
++
++ while (!die_now) {
++ /*
++ * (Re)initialize this child to a pre-connection state.
++ */
++
++ current_conn = NULL;
++
++ apr_pool_clear(ptrans);
++
++ if (CHILD_INFO_TABLE[my_child_num].type != CHILD_TYPE_MULTIPLEXER
++ && ap_max_requests_per_child > 0
++ && requests_this_child++ >= ap_max_requests_per_child) {
++ _DBG("max requests reached, dying now", 0);
++ clean_child_exit(0);
++ }
++
++ (void) ap_update_child_status(sbh, SERVER_READY, (request_rec *) NULL);
++
++ /*
++ * Wait for an acceptable connection to arrive.
++ */
++
++ /* Lock around "accept", if necessary */
++ SAFE_ACCEPT(accept_mutex_on());
++
++ if (num_listensocks == 1) {
++ offset = 0;
++ }
++ else {
++ /* multiple listening sockets - need to poll */
++ for (;;) {
++ apr_status_t ret;
++ apr_int32_t n;
++
++ ret = apr_poll(pollset, num_listensocks, &n, -1);
++ if (ret != APR_SUCCESS) {
++ if (APR_STATUS_IS_EINTR(ret)) {
++ continue;
++ }
++ /* Single Unix documents select as returning errnos
++ * EBADF, EINTR, and EINVAL... and in none of those
++ * cases does it make sense to continue. In fact
++ * on Linux 2.0.x we seem to end up with EFAULT
++ * occasionally, and we'd loop forever due to it.
++ */
++ ap_log_error(APLOG_MARK, APLOG_ERR, ret, ap_server_conf,
++ "apr_poll: (listen)");
++ clean_child_exit(1);
++ }
++ /* find a listener */
++ curr_pollfd = last_pollfd;
++ do {
++ curr_pollfd++;
++ if (curr_pollfd >= num_listensocks) {
++ curr_pollfd = 0;
++ }
++ /* XXX: Should we check for POLLERR? */
++ if (pollset[curr_pollfd].rtnevents & APR_POLLIN) {
++ last_pollfd = curr_pollfd;
++ offset = curr_pollfd;
++ goto got_fd;
++ }
++ } while (curr_pollfd != last_pollfd);
++
++ continue;
++ }
++ }
++ got_fd:
++ _DBG("input available ... resetting socket.",0);
++ sock = NULL; /* important! */
++
++ /* if we accept() something we don't want to die, so we have to
++ * defer the exit
++ */
++ status = listensocks[offset].accept_func((void *)&sock, &listensocks[offset], ptrans);
++ SAFE_ACCEPT(accept_mutex_off()); /* unlock after "accept" */
++
++ if (status == APR_EGENERAL) {
++ /* resource shortage or should-not-occur occured */
++ clean_child_exit(1);
++ }
++ else if (status != APR_SUCCESS || die_now) {
++ continue;
++ }
++
++ if (CHILD_INFO_TABLE[my_child_num].type == CHILD_TYPE_PROCESSOR ||
++ CHILD_INFO_TABLE[my_child_num].type == CHILD_TYPE_WORKER)
++ {
++ _DBG("CHECKING IF WE SHOULD CLONE A CHILD...");
++
++ _DBG("total_processors = %d, max_processors = %d",
++ total_processors(my_child_num),
++ CHILD_INFO_TABLE[my_child_num].senv->max_processors);
++
++ _DBG("idle_processors = %d, min_free_processors = %d",
++ idle_processors(my_child_num),
++ CHILD_INFO_TABLE[my_child_num].senv->min_free_processors);
++
++ if(total_processors(my_child_num) <
++ CHILD_INFO_TABLE[my_child_num].senv->max_processors &&
++ idle_processors(my_child_num) <=
++ CHILD_INFO_TABLE[my_child_num].senv->min_free_processors)
++ {
++ _DBG("CLONING CHILD");
++ child_clone();
++ }
++ }
++
++ if (!setjmp(CHILD_INFO_TABLE[my_child_num].jmpbuffer))
++ {
++ _DBG("marked jmpbuffer",0);
++ _TRACE_CALL("process_socket()",0);
++ process_socket(ptrans, sock, my_child_num, bucket_alloc, pchild);
++ _TRACE_RET("process_socket()",0);
++ }
++ else
++ {
++ _DBG("landed from longjmp",0);
++ CHILD_INFO_TABLE[my_child_num].sock_fd = AP_PERUSER_THISCHILD;
++ }
++
++ /* Check the pod and the generation number after processing a
++ * connection so that we'll go away if a graceful restart occurred
++ * while we were processing the connection or we are the lucky
++ * idle server process that gets to die.
++ */
++ if (ap_mpm_pod_check(pod) == APR_SUCCESS) { /* selected as idle? */
++ _DBG("ap_mpm_pod_check(pod) = APR_SUCCESS; dying now", 0);
++ die_now = 1;
++ }
++ else if (ap_my_generation !=
++ ap_scoreboard_image->global->running_generation) { /* restart? */
++ /* yeah, this could be non-graceful restart, in which case the
++ * parent will kill us soon enough, but why bother checking?
++ */
++ _DBG("ap_my_generation != ap_scoreboard_image->global->running_generation; dying now", 0);
++ die_now = 1;
++ }
++
++ if(CHILD_INFO_TABLE[my_child_num].status == CHILD_STATUS_RESTART)
++ {
++ _DBG("restarting", 0);
++ die_now = 1;
++ }
++ }
++
++ _DBG("clean_child_exit(0)");
++ clean_child_exit(0);
++}
++
++static server_env_t* senv_add(int uid, int gid, const char* chroot)
++{
++ int i;
++ int socks[2];
++
++ _DBG("Searching for matching senv...");
++
++ for(i = 0; i < NUM_SENV; i++)
++ {
++ if(SENV[i].uid == uid && SENV[i].gid == gid &&
++ (SENV[i].chroot == NULL || !strcmp(SENV[i].chroot, chroot)))
++ {
++ _DBG("Found existing senv: %i", i);
++ return &SENV[i];
++ }
++ }
++
++ if(NUM_SENV >= server_limit)
++ {
++ _DBG("server_limit reached!");
++ return NULL;
++ }
++
++ _DBG("Creating new senv");
++
++ SENV[NUM_SENV].uid = uid;
++ SENV[NUM_SENV].gid = gid;
++ SENV[NUM_SENV].chroot = chroot;
++
++ SENV[NUM_SENV].min_processors = ap_min_processors;
++ SENV[NUM_SENV].min_free_processors = ap_min_free_processors;
++ SENV[NUM_SENV].max_processors = ap_max_processors;
++
++ socketpair(PF_UNIX, SOCK_STREAM, 0, socks);
++ SENV[NUM_SENV].input = socks[0];
++ SENV[NUM_SENV].output = socks[1];
++
++ return &SENV[server_env_image->control->num++];
++}
++
++static const char* child_clone()
++{
++ int i;
++ child_info_t *this;
++ child_info_t *new;
++
++ for(i = 0; i < NUM_CHILDS; i++)
++ {
++ if(CHILD_INFO_TABLE[i].pid == 0 &&
++ CHILD_INFO_TABLE[i].type == CHILD_TYPE_UNKNOWN) break;
++ }
++
++ if(i == NUM_CHILDS && NUM_CHILDS >= server_limit)
++ {
++ _DBG("Trying to use more child ID's than NumServers. "
++ "Increase NumServers in your config file.");
++ return NULL;
++ }
++
++ _DBG("cloning child #%d from #%d", i, my_child_num);
++
++ this = &CHILD_INFO_TABLE[my_child_num];
++ new = &CHILD_INFO_TABLE[i];
++
++ new->senv = this->senv;
++ new->type = CHILD_TYPE_WORKER;
++ new->sock_fd = this->sock_fd;
++ new->status = CHILD_STATUS_STARTING;
++
++ if(i == NUM_CHILDS) child_info_image->control->num++;
++ return NULL;
++}
++
++static const char* child_add(int type, int status,
++ apr_pool_t *pool, uid_t uid, gid_t gid, const char* chroot)
++{
++ _DBG("adding child #%d", NUM_CHILDS);
++
++ if(NUM_CHILDS >= server_limit)
++ {
++ return "Trying to use more child ID's than NumServers. "
++ "Increase NumServers in your config file.";
++ }
++
++ if (chroot && !ap_is_directory(pool, chroot))
++ return apr_psprintf(pool, "Error: chroot directory [%s] does not exist", chroot);
++
++ CHILD_INFO_TABLE[NUM_CHILDS].senv = senv_add(uid, gid, chroot);
++
++ if(CHILD_INFO_TABLE[NUM_CHILDS].senv == NULL)
++ {
++ return "Trying to use more server environments than NumServers. "
++ "Increase NumServers in your config file.";
++ }
++
++ if(type != CHILD_TYPE_WORKER)
++ CHILD_INFO_TABLE[NUM_CHILDS].senv->processor_id = NUM_CHILDS;
++
++ CHILD_INFO_TABLE[NUM_CHILDS].type = type;
++ CHILD_INFO_TABLE[NUM_CHILDS].sock_fd = AP_PERUSER_THISCHILD;
++ CHILD_INFO_TABLE[NUM_CHILDS].status = status;
++
++ _DBG("[%d] uid=%d gid=%d type=%d chroot=%s",
++ NUM_CHILDS, uid, gid, type,
++ chroot);
++
++ if (uid == 0 || gid == 0)
++ {
++ _DBG("Assigning root user/group to a child.", 0);
++ }
++
++ child_info_image->control->num++;
++
++ return NULL;
++}
++
++static int make_child(server_rec *s, int slot)
++{
++ int pid;
++
++ _DBG("function entered", 0);
++ dump_server_env_image();
++
++ switch (CHILD_INFO_TABLE[slot].type)
++ {
++ case CHILD_TYPE_MULTIPLEXER: break;
++ case CHILD_TYPE_PROCESSOR: break;
++ case CHILD_TYPE_WORKER: break;
++
++ default:
++ _DBG("no valid client in slot %d", slot);
++ /* sleep(1); */
++ return 0;
++ }
++
++ if (slot + 1 > ap_max_daemons_limit) {
++ ap_max_daemons_limit = slot + 1;
++ }
++
++ if (one_process) {
++ apr_signal(SIGHUP, just_die);
++ /* Don't catch AP_SIG_GRACEFUL in ONE_PROCESS mode :) */
++ apr_signal(SIGINT, just_die);
++#ifdef SIGQUIT
++ apr_signal(SIGQUIT, SIG_DFL);
++#endif
++ apr_signal(SIGTERM, just_die);
++ child_main(slot);
++ }
++
++ (void) ap_update_child_status_from_indexes(slot, 0, SERVER_STARTING,
++ (request_rec *) NULL);
++
++ CHILD_INFO_TABLE[slot].status = CHILD_STATUS_ACTIVE;
++
++
++#ifdef _OSD_POSIX
++ /* BS2000 requires a "special" version of fork() before a setuid() call */
++ if ((pid = os_fork(unixd_config.user_name)) == -1) {
++#elif defined(TPF)
++ if ((pid = os_fork(s, slot)) == -1) {
++#else
++ if ((pid = fork()) == -1) {
++#endif
++ ap_log_error(APLOG_MARK, APLOG_ERR, errno, s, "fork: Unable to fork new process");
++
++ /* fork didn't succeed. Fix the scoreboard or else
++ * it will say SERVER_STARTING forever and ever
++ */
++ (void) ap_update_child_status_from_indexes(slot, 0, SERVER_DEAD,
++ (request_rec *) NULL);
++
++ /* In case system resources are maxxed out, we don't want
++ Apache running away with the CPU trying to fork over and
++ over and over again. */
++ sleep(10);
++
++ return -1;
++ }
++
++ if (!pid) {
++#ifdef HAVE_BINDPROCESSOR
++ /* by default AIX binds to a single processor
++ * this bit unbinds children which will then bind to another cpu
++ */
++ int status = bindprocessor(BINDPROCESS, (int)getpid(),
++ PROCESSOR_CLASS_ANY);
++ if (status != OK) {
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno,
++ ap_server_conf, "processor unbind failed %d", status);
++ }
++#endif
++ RAISE_SIGSTOP(MAKE_CHILD);
++ AP_MONCONTROL(1);
++ /* Disable the parent's signal handlers and set up proper handling in
++ * the child.
++ */
++ apr_signal(SIGHUP, just_die);
++ apr_signal(SIGTERM, just_die);
++ /* The child process doesn't do anything for AP_SIG_GRACEFUL.
++ * Instead, the pod is used for signalling graceful restart.
++ */
++ /* apr_signal(AP_SIG_GRACEFUL, restart); */
++ child_main(slot);
++ clean_child_exit(0);
++ }
++
++ ap_scoreboard_image->parent[slot].pid = pid;
++ CHILD_INFO_TABLE[slot].pid = pid;
++
++ ap_child_table[slot].pid = pid;
++ ap_child_table[slot].status = SERVER_ALIVE;
++
++ return 0;
++}
++
++
++/*
++ * idle_spawn_rate is the number of children that will be spawned on the
++ * next maintenance cycle if there aren't enough idle servers. It is
++ * doubled up to MAX_SPAWN_RATE, and reset only when a cycle goes by
++ * without the need to spawn.
++ */
++static int idle_spawn_rate = 1;
++#ifndef MAX_SPAWN_RATE
++#define MAX_SPAWN_RATE (32)
++#endif
++static int total_processes(int child_num)
++{
++ int i, total;
++ for(i = 0, total = 0; i < NUM_CHILDS; ++i)
++ {
++ if(CHILD_INFO_TABLE[i].senv == CHILD_INFO_TABLE[child_num].senv &&
++ (!(CHILD_INFO_TABLE[i].type == CHILD_TYPE_PROCESSOR &&
++ CHILD_INFO_TABLE[i].status == CHILD_STATUS_STANDBY)))
++ {
++ total++;
++ }
++ }
++ return total;
++}
++
++static void perform_idle_server_maintenance(apr_pool_t *p)
++{
++ int i;
++ apr_time_t now;
++
++ /* _DBG("function entered", 0); */
++
++ now = apr_time_now();
++
++ for (i = 0; i < NUM_CHILDS; ++i)
++ {
++ if(CHILD_INFO_TABLE[i].pid == 0)
++ {
++ if(CHILD_INFO_TABLE[i].status == CHILD_STATUS_STARTING)
++ make_child(ap_server_conf, i);
++ }
++ else if(((CHILD_INFO_TABLE[i].type == CHILD_TYPE_PROCESSOR ||
++ CHILD_INFO_TABLE[i].type == CHILD_TYPE_WORKER) &&
++ ap_scoreboard_image->parent[i].pid > 1) &&
++ (idle_processors (i) > 1 || total_processes (i) == 1) && (
++ (expire_timeout > 0 && ap_scoreboard_image->servers[i][0].status != SERVER_DEAD &&
++ apr_time_sec(now - ap_scoreboard_image->servers[i][0].last_used) > expire_timeout) ||
++ (idle_timeout > 0 && ap_scoreboard_image->servers[i][0].status == SERVER_READY &&
++ apr_time_sec(now - ap_scoreboard_image->servers[i][0].last_used) > idle_timeout)))
++ {
++ CHILD_INFO_TABLE[i].pid = 0;
++ CHILD_INFO_TABLE[i].status = CHILD_STATUS_STANDBY;
++
++ if(CHILD_INFO_TABLE[i].type == CHILD_TYPE_WORKER)
++ {
++ /* completely free up this slot */
++
++ CHILD_INFO_TABLE[i].senv = (server_env_t*)NULL;
++ CHILD_INFO_TABLE[i].type = CHILD_TYPE_UNKNOWN;
++ CHILD_INFO_TABLE[i].sock_fd = -3; /* -1 and -2 are taken */
++ }
++ if(kill(ap_scoreboard_image->parent[i].pid, SIGTERM) == -1)
++ {
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno,
++ ap_server_conf, "kill SIGTERM");
++ }
++
++
++ ap_update_child_status_from_indexes(i, 0, SERVER_DEAD, NULL);
++ }
++ }
++
++ for(i=0;i<grace_children;i++) {
++ if (child_grace_info_table[i].pid > 0 && expire_timeout > 0 &&
++ apr_time_sec(now - child_grace_info_table[i].last_used) > expire_timeout) {
++
++ _DBG("Killing a child from last graceful (pid=%d,childno=%d,last_used=%d)",
++ child_grace_info_table[i].pid, child_grace_info_table[i].id,
++ child_grace_info_table[i].last_used);
++
++ if(kill(child_grace_info_table[i].pid, SIGTERM) == -1)
++ {
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno,
++ ap_server_conf, "kill SIGTERM");
++ }
++
++ /* We don't need to do remove_grace_child() here,
++ * because it will be automatically done once
++ * the child dies by ap_mpm_run() */
++ }
++ }
++}
++
++int remove_grace_child(int slot) {
++ if (slot < grace_children) {
++ child_grace_info_table[slot].id = 0;
++ child_grace_info_table[slot].pid = 0;
++ child_grace_info_table[slot].status = CHILD_STATUS_STANDBY;
++ child_grace_info_table[slot].type = CHILD_TYPE_UNKNOWN;
++ child_grace_info_table[slot].last_used = 0;
++ grace_children_alive--;
++
++ if (grace_children_alive <= 0) { /* All children have returned from graceful */
++ _DBG("Every child has returned from graceful restart - freeing child_grace_info_table");
++ grace_children_alive = 0;
++ is_graceful = 0;
++ grace_children = 0;
++ free(child_grace_info_table);
++ }
++ return 0;
++ }
++ return 1;
++}
++
++/*****************************************************************
++ * Executive routines.
++ */
++
++int ap_mpm_run(apr_pool_t *_pconf, apr_pool_t *plog, server_rec *s)
++{
++ int i;
++/* int fd; */
++ apr_status_t rv;
++ apr_size_t one = 1;
++/* apr_socket_t *sock = NULL; */
++
++ ap_log_pid(pconf, ap_pid_fname);
++
++ first_server_limit = server_limit;
++ if (changed_limit_at_restart) {
++ ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
++ "WARNING: Attempt to change ServerLimit "
++ "ignored during restart");
++ changed_limit_at_restart = 0;
++ }
++
++ ap_server_conf = s;
++
++ /* Initialize cross-process accept lock */
++ ap_lock_fname = apr_psprintf(_pconf, "%s.%" APR_PID_T_FMT,
++ ap_server_root_relative(_pconf, ap_lock_fname),
++ ap_my_pid);
++
++ rv = apr_proc_mutex_create(&accept_mutex, ap_lock_fname,
++ ap_accept_lock_mech, _pconf);
++ if (rv != APR_SUCCESS) {
++ ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s,
++ "Couldn't create accept lock");
++ mpm_state = AP_MPMQ_STOPPING;
++ return 1;
++ }
++
++#if 0
++#if APR_USE_SYSVSEM_SERIALIZE
++ if (ap_accept_lock_mech == APR_LOCK_DEFAULT ||
++ ap_accept_lock_mech == APR_LOCK_SYSVSEM) {
++#else
++ if (ap_accept_lock_mech == APR_LOCK_SYSVSEM) {
++#endif
++ rv = unixd_set_proc_mutex_perms(accept_mutex);
++ if (rv != APR_SUCCESS) {
++ ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s,
++ "Couldn't set permissions on cross-process lock; "
++ "check User and Group directives");
++ mpm_state = AP_MPMQ_STOPPING;
++ return 1;
++ }
++ }
++#endif
++
++ if (!is_graceful) {
++ if (ap_run_pre_mpm(s->process->pool, SB_SHARED) != OK) {
++ mpm_state = AP_MPMQ_STOPPING;
++ return 1;
++ }
++ /* fix the generation number in the global score; we just got a new,
++ * cleared scoreboard
++ */
++ ap_scoreboard_image->global->running_generation = ap_my_generation;
++ }
++
++ /* Initialize the child table */
++ if (!is_graceful)
++ {
++ for (i = 0; i < server_limit; i++)
++ {
++ ap_child_table[i].pid = 0;
++ }
++ }
++
++ /* We need to put the new listeners at the end of the ap_listeners
++ * list. If we don't, then the pool will be cleared before the
++ * open_logs phase is called for the second time, and ap_listeners
++ * will have only invalid data. If that happens, then the sockets
++ * that we opened using make_sock() will be lost, and the server
++ * won't start.
++ */
++
++/*
++ apr_os_file_get(&fd, pipe_of_death_in);
++ apr_os_sock_put(&sock, &fd, pconf);
++
++ listen_add(pconf, sock, check_pipe_of_death);
++*/
++ set_signals();
++
++ if (one_process) {
++ AP_MONCONTROL(1);
++ }
++
++ ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
++ "%s configured -- resuming normal operations",
++ ap_get_server_version());
++ ap_log_error(APLOG_MARK, APLOG_INFO, 0, ap_server_conf,
++ "Server built: %s", ap_get_server_built());
++#ifdef AP_MPM_WANT_SET_ACCEPT_LOCK_MECH
++ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
++ "AcceptMutex: %s (default: %s)",
++ apr_proc_mutex_name(accept_mutex),
++ apr_proc_mutex_defname());
++#endif
++ restart_pending = shutdown_pending = 0;
++
++ mpm_state = AP_MPMQ_RUNNING;
++
++ _DBG("sizeof(child_info_t) = %d", sizeof(child_info_t));
++
++ while (!restart_pending && !shutdown_pending) {
++ int child_slot;
++ apr_exit_why_e exitwhy;
++ int status, processed_status;
++ /* this is a memory leak, but I'll fix it later. */
++ apr_proc_t pid;
++
++ ap_wait_or_timeout(&exitwhy, &status, &pid, pconf);
++
++ /* XXX: if it takes longer than 1 second for all our children
++ * to start up and get into IDLE state then we may spawn an
++ * extra child
++ */
++ if (pid.pid != -1) {
++ processed_status = ap_process_child_status(&pid, exitwhy, status);
++ if (processed_status == APEXIT_CHILDFATAL) {
++ mpm_state = AP_MPMQ_STOPPING;
++ return 1;
++ }
++
++ if (grace_children > 0) {
++ for(i=0;i<grace_children;i++) {
++ if (child_grace_info_table[i].pid == pid.pid) {
++ break;
++ }
++ }
++ if (i != grace_children) {
++ _DBG("Child returned from graceful (%d)", i);
++ remove_grace_child(i);
++ continue;
++ }
++ }
++
++ /* non-fatal death... note that it's gone in the scoreboard. */
++ child_slot = find_child_by_pid(&pid);
++ _DBG("child #%d has died ...", child_slot);
++
++ for (i = 0; i < ap_max_daemons_limit; ++i)
++ {
++ if (ap_child_table[i].pid == pid.pid)
++ {
++ child_slot = i;
++ break;
++ }
++ }
++
++ if (child_slot >= 0) {
++ ap_child_table[child_slot].pid = 0;
++ _TRACE_CALL("ap_update_child_status_from_indexes", 0);
++ (void) ap_update_child_status_from_indexes(child_slot, 0, SERVER_DEAD,
++ (request_rec *) NULL);
++ _TRACE_RET("ap_update_child_status_from_indexes", 0);
++
++ if (processed_status == APEXIT_CHILDSICK) {
++ /* child detected a resource shortage (E[NM]FILE, ENOBUFS, etc)
++ * cut the fork rate to the minimum
++ */
++ _DBG("processed_status = APEXIT_CHILDSICK", 0);
++ idle_spawn_rate = 1;
++ }
++ else if (CHILD_INFO_TABLE[child_slot].status == CHILD_STATUS_STANDBY) {
++ _DBG("leaving child in standby state", 0);
++ }
++ else if (child_slot < ap_daemons_limit &&
++ CHILD_INFO_TABLE[child_slot].type !=
++ CHILD_TYPE_UNKNOWN) {
++ /* we're still doing a 1-for-1 replacement of dead
++ * children with new children
++ */
++ _DBG("replacing by new child ...", 0);
++ make_child(ap_server_conf, child_slot);
++ }
++#if APR_HAS_OTHER_CHILD
++ }
++ else if (apr_proc_other_child_alert(&pid, APR_OC_REASON_DEATH, status) == APR_SUCCESS) {
++ _DBG("Already handled", 0);
++ /* handled */
++#endif
++ }
++ else if (is_graceful) {
++ /* Great, we've probably just lost a slot in the
++ * scoreboard. Somehow we don't know about this
++ * child.
++ */
++ _DBG("long lost child came home, whatever that means", 0);
++
++ ap_log_error(APLOG_MARK, APLOG_WARNING,
++ 0, ap_server_conf,
++ "long lost child came home! (pid %ld)", (long)pid.pid);
++ }
++ /* Don't perform idle maintenance when a child dies,
++ * only do it when there's a timeout. Remember only a
++ * finite number of children can die, and it's pretty
++ * pathological for a lot to die suddenly.
++ */
++ continue;
++ }
++
++ perform_idle_server_maintenance(pconf);
++#ifdef TPF
++ shutdown_pending = os_check_server(tpf_server_name);
++ ap_check_signals();
++ sleep(1);
++#endif /*TPF */
++ }
++
++ mpm_state = AP_MPMQ_STOPPING;
++
++ if (shutdown_pending) {
++ /* Time to gracefully shut down:
++ * Kill child processes, tell them to call child_exit, etc...
++ */
++ if (unixd_killpg(getpgrp(), SIGTERM) < 0) {
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "killpg SIGTERM");
++ }
++ ap_reclaim_child_processes(1); /* Start with SIGTERM */
++
++ /* cleanup pid file on normal shutdown */
++ {
++ const char *pidfile = NULL;
++ pidfile = ap_server_root_relative (pconf, ap_pid_fname);
++ if ( pidfile != NULL && unlink(pidfile) == 0)
++ ap_log_error(APLOG_MARK, APLOG_INFO,
++ 0, ap_server_conf,
++ "removed PID file %s (pid=%ld)",
++ pidfile, (long)getpid());
++ }
++
++ ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
++ "caught SIGTERM, shutting down");
++ return 1;
++ }
++
++ /* we've been told to restart */
++ apr_signal(SIGHUP, SIG_IGN);
++ if (one_process) {
++ /* not worth thinking about */
++ return 1;
++ }
++
++ /* advance to the next generation */
++ /* XXX: we really need to make sure this new generation number isn't in
++ * use by any of the children.
++ */
++ ++ap_my_generation;
++ ap_scoreboard_image->global->running_generation = ap_my_generation;
++
++ if (is_graceful) {
++ char char_of_death = AP_PERUSER_CHAR_OF_DEATH;
++
++ ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
++ "Graceful restart requested, doing restart");
++
++#if 0
++ /* kill off the idle ones */
++ ap_mpm_pod_killpg(pod, ap_max_daemons_limit);
++
++ /* This is mostly for debugging... so that we know what is still
++ * gracefully dealing with existing request. This will break
++ * in a very nasty way if we ever have the scoreboard totally
++ * file-based (no shared memory)
++ */
++ for (i = 0; i < ap_daemons_limit; ++i) {
++ if (ap_scoreboard_image->servers[i][0].status != SERVER_DEAD) {
++ ap_scoreboard_image->servers[i][0].status = SERVER_GRACEFUL;
++ }
++ }
++#endif
++
++ ap_log_error(APLOG_MARK, APLOG_NOTICE, 0,
++ ap_server_conf, AP_SIG_GRACEFUL_STRING " received. "
++ "Doing graceful restart");
++
++ /* This is mostly for debugging... so that we know what is still
++ * gracefully dealing with existing request.
++ */
++
++ int alivechildren = 0;
++ child_grace_info_t* old_grace_info;
++
++ for (i = 0; i < NUM_CHILDS; ++i)
++ {
++ ((ap_child_table[i].pid) && (ap_child_table[i].status = SERVER_DYING));
++
++ if (CHILD_INFO_TABLE[i].pid) {
++ alivechildren++;
++ }
++ }
++
++ _DBG("Initializing child_grace_info_table", 0);
++
++ if (alivechildren > 0) {
++ if (grace_children > 0) {
++ old_grace_info = child_grace_info_table;
++ _DBG("%d children still living from last graceful "
++ "- adding to new child_grace_info_table",
++ grace_children);
++ }
++
++ child_grace_info_table = (child_grace_info_t*)calloc(alivechildren+grace_children,
++ sizeof(child_grace_info_t));
++
++ if (grace_children > 0) {
++ for(i=0;i<grace_children;i++) {
++ child_grace_info_table[i] = old_grace_info[i];
++ }
++ grace_children = i;
++ free(old_grace_info);
++ }
++ else grace_children = 0;
++
++ }
++
++ /* give the children the signal to die */
++ for (i = 0; i < NUM_CHILDS;)
++ {
++ if ((rv = apr_file_write(pipe_of_death_out, &char_of_death, &one)) != APR_SUCCESS)
++ {
++ if (APR_STATUS_IS_EINTR(rv)) continue;
++ ap_log_error(APLOG_MARK, APLOG_WARNING, rv, ap_server_conf,
++ "write pipe_of_death");
++ }
++ if (CHILD_INFO_TABLE[i].pid) {
++ child_grace_info_table[grace_children].id = CHILD_INFO_TABLE[i].id;
++ child_grace_info_table[grace_children].pid = CHILD_INFO_TABLE[i].pid;
++ child_grace_info_table[grace_children].status = CHILD_INFO_TABLE[i].status;
++ child_grace_info_table[grace_children].type = CHILD_INFO_TABLE[i].type;
++ child_grace_info_table[grace_children].last_used= ap_scoreboard_image->servers[i][0].last_used;
++ grace_children++;
++ grace_children_alive++;
++ }
++ i++;
++ }
++ _DBG("Total children of %d leaving behind for graceful restart (%d living)",
++ grace_children, grace_children_alive);
++
++ /* destroy server_env_image */
++ for (i = 0; i < NUM_SENV; i++)
++ {
++ close(SENV[i].input);
++ close(SENV[i].output);
++ }
++ cleanup_server_environments(NULL);
++ }
++ else {
++ /* Kill 'em off */
++ if (unixd_killpg(getpgrp(), SIGHUP) < 0) {
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "killpg SIGHUP");
++ }
++ ap_reclaim_child_processes(0); /* Not when just starting up */
++ ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
++ "SIGHUP received. Attempting to restart");
++ }
++
++ return 0;
++}
++
++/* == allocate an private server config structure == */
++static void *peruser_create_config(apr_pool_t *p, server_rec *s)
++{
++ peruser_server_conf *c = (peruser_server_conf *)
++ apr_pcalloc(p, sizeof(peruser_server_conf));
++ return c;
++}
++
++/* This really should be a post_config hook, but the error log is already
++ * redirected by that point, so we need to do this in the open_logs phase.
++ */
++static int peruser_open_logs(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
++{
++ apr_status_t rv;
++
++ pconf = p;
++ ap_server_conf = s;
++
++ if ((num_listensocks = ap_setup_listeners(ap_server_conf)) < 1) {
++ ap_log_error(APLOG_MARK, APLOG_ALERT|APLOG_STARTUP, 0,
++ NULL, "no listening sockets available, shutting down");
++ return DONE;
++ }
++
++ ap_log_pid(pconf, ap_pid_fname);
++
++ if ((rv = ap_mpm_pod_open(pconf, &pod))) {
++ ap_log_error(APLOG_MARK, APLOG_CRIT|APLOG_STARTUP, rv, NULL,
++ "Could not open pipe-of-death.");
++ return DONE;
++ }
++
++ if ((rv = apr_file_pipe_create(&pipe_of_death_in, &pipe_of_death_out,
++ pconf)) != APR_SUCCESS) {
++ ap_log_error(APLOG_MARK, APLOG_ERR, rv,
++ (const server_rec*) ap_server_conf,
++ "apr_file_pipe_create (pipe_of_death)");
++ exit(1);
++ }
++ if ((rv = apr_file_pipe_timeout_set(pipe_of_death_in, 0)) != APR_SUCCESS) {
++ ap_log_error(APLOG_MARK, APLOG_ERR, rv,
++ (const server_rec*) ap_server_conf,
++ "apr_file_pipe_timeout_set (pipe_of_death)");
++ exit(1);
++ }
++
++ return OK;
++}
++
++static int restart_num = 0;
++static int peruser_pre_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp)
++{
++ int no_detach, debug, foreground, i;
++ int tmp_server_limit = DEFAULT_SERVER_LIMIT;
++ ap_directive_t *pdir;
++ apr_status_t rv;
++ apr_pool_t *global_pool;
++ void *shmem;
++
++ mpm_state = AP_MPMQ_STARTING;
++
++ debug = ap_exists_config_define("DEBUG");
++
++ if (debug) {
++ foreground = one_process = 1;
++ no_detach = 0;
++ }
++ else
++ {
++ no_detach = ap_exists_config_define("NO_DETACH");
++ one_process = ap_exists_config_define("ONE_PROCESS");
++ foreground = ap_exists_config_define("FOREGROUND");
++ }
++
++ /* sigh, want this only the second time around */
++ if (restart_num++ == 1) {
++ if (!one_process && !foreground) {
++ rv = apr_proc_detach(no_detach ? APR_PROC_DETACH_FOREGROUND
++ : APR_PROC_DETACH_DAEMONIZE);
++ if (rv != APR_SUCCESS) {
++ ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL,
++ "apr_proc_detach failed");
++ return HTTP_INTERNAL_SERVER_ERROR;
++ }
++ }
++
++ parent_pid = ap_my_pid = getpid();
++ }
++
++ unixd_pre_config(ptemp);
++ ap_listen_pre_config();
++ ap_min_processors = DEFAULT_MIN_PROCESSORS;
++ ap_min_free_processors = DEFAULT_MIN_FREE_PROCESSORS;
++ ap_max_processors = DEFAULT_MAX_PROCESSORS;
++ ap_daemons_limit = server_limit;
++ ap_pid_fname = DEFAULT_PIDLOG;
++ ap_lock_fname = DEFAULT_LOCKFILE;
++ ap_max_requests_per_child = DEFAULT_MAX_REQUESTS_PER_CHILD;
++ ap_extended_status = 1;
++#ifdef AP_MPM_WANT_SET_MAX_MEM_FREE
++ ap_max_mem_free = APR_ALLOCATOR_MAX_FREE_UNLIMITED;
++#endif
++
++ apr_cpystrn(ap_coredump_dir, ap_server_root, sizeof(ap_coredump_dir));
++
++ /* we need to know ServerLimit and ThreadLimit before we start processing
++ * the tree because we need to already have allocated child_info_table
++ */
++ for (pdir = ap_conftree; pdir != NULL; pdir = pdir->next)
++ {
++ if (!strcasecmp(pdir->directive, "ServerLimit"))
++ {
++ if (atoi(pdir->args) > tmp_server_limit)
++ {
++ tmp_server_limit = atoi(pdir->args);
++ if (tmp_server_limit > MAX_SERVER_LIMIT)
++ {
++ tmp_server_limit = MAX_SERVER_LIMIT;
++ }
++ }
++ }
++ }
++
++ /* We don't want to have to recreate the scoreboard after
++ * restarts, so we'll create a global pool and never clean it.
++ */
++ rv = apr_pool_create(&global_pool, NULL);
++ if (rv != APR_SUCCESS) {
++ ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL,
++ "Fatal error: unable to create global pool");
++ return rv;
++ }
++
++
++ _DBG("Initializing child_info_table", 0);
++ child_info_size = tmp_server_limit * sizeof(child_info_t) + sizeof(apr_size_t);
++
++ rv = apr_shm_create(&child_info_shm, child_info_size, NULL, global_pool);
++
++/* if ((rv != APR_SUCCESS) && (rv != APR_ENOTIMPL)) { */
++ if (rv != APR_SUCCESS) {
++ _DBG("shared memory creation failed", 0);
++
++ ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL,
++ "Unable to create shared memory segment "
++ "(anonymous shared memory failure)");
++ }
++ else if (rv == APR_ENOTIMPL) {
++ _DBG("anonymous shared memory not available", 0);
++ /* TODO: make up a filename and do name-based shmem */
++ }
++
++ if (rv || !(shmem = apr_shm_baseaddr_get(child_info_shm))) {
++ _DBG("apr_shm_baseaddr_get() failed", 0);
++ return HTTP_INTERNAL_SERVER_ERROR;
++ }
++
++ memset(shmem, 0, sizeof(child_info_size));
++ child_info_image = (child_info*)calloc(1, sizeof(child_info_size));
++ child_info_image->control = (child_info_control*)shmem;
++ shmem += sizeof(child_info_control*);
++ child_info_image->table = (child_info_t*)shmem;
++
++ child_info_image->control->num = 0;
++
++ for (i = 0; i < tmp_server_limit; i++)
++ {
++ CHILD_INFO_TABLE[i].pid = 0;
++ CHILD_INFO_TABLE[i].senv = (server_env_t*)NULL;
++ CHILD_INFO_TABLE[i].type = CHILD_TYPE_UNKNOWN;
++ CHILD_INFO_TABLE[i].status = CHILD_STATUS_STANDBY;
++ CHILD_INFO_TABLE[i].sock_fd = -3; /* -1 and -2 are taken */
++ CHILD_INFO_TABLE[i].id = i;
++ }
++
++ if (!server_env_image)
++ {
++ _DBG("Initializing server_environments_table", 0);
++ server_env_size = tmp_server_limit * sizeof(server_env_t) + sizeof(apr_size_t);
++
++ rv = apr_shm_create(&server_env_shm, server_env_size, NULL, global_pool);
++
++ if (rv != APR_SUCCESS) {
++ _DBG("shared memory creation failed", 0);
++
++ ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL,
++ "Unable to create shared memory segment "
++ "(anonymous shared memory failure)");
++ }
++ else if (rv == APR_ENOTIMPL) {
++ _DBG("anonymous shared memory not available", 0);
++ /* TODO: make up a filename and do name-based shmem */
++ }
++
++ if (rv || !(shmem = apr_shm_baseaddr_get(server_env_shm))) {
++ _DBG("apr_shm_baseaddr_get() failed", 0);
++ return HTTP_INTERNAL_SERVER_ERROR;
++ }
++
++ memset(shmem, 0, sizeof(server_env_size));
++ server_env_image = (server_env*)calloc(1, sizeof(server_env_size));
++ server_env_image->control = (server_env_control*)shmem;
++ shmem += sizeof(server_env_control*);
++ server_env_image->table = (server_env_t*)shmem;
++
++ server_env_image->control->num = 0;
++
++ for (i = 0; i < tmp_server_limit; i++)
++ {
++ SENV[i].processor_id = -1;
++ SENV[i].uid = -1;
++ SENV[i].gid = -1;
++ SENV[i].chroot = NULL;
++ SENV[i].input = -1;
++ SENV[i].output = -1;
++ }
++ }
++
++ return OK;
++}
++
++static int peruser_post_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *server_list)
++{
++ ap_child_table = (ap_ctable *)apr_pcalloc(p, server_limit * sizeof(ap_ctable));
++
++ return OK;
++}
++
++static int peruser_post_read(request_rec *r)
++{
++ peruser_server_conf *sconf = PERUSER_SERVER_CONF(r->server->module_config);
++ child_info_t *processor;
++
++ if(CHILD_INFO_TABLE[my_child_num].type == CHILD_TYPE_MULTIPLEXER)
++ processor = &CHILD_INFO_TABLE[sconf->senv->processor_id];
++ else
++ processor = &CHILD_INFO_TABLE[r->connection->id];
++
++
++ if (!strlen(r->the_request))
++ {
++ _DBG("corrupt request. aborting",0);
++ return DECLINED;
++ }
++
++ if (processor->sock_fd != AP_PERUSER_THISCHILD)
++ {
++ apr_socket_t *sock = NULL;
++
++ apr_os_sock_put(&sock, &processor->sock_fd, r->connection->pool);
++ ap_sock_disable_nagle(sock);
++ ap_set_module_config(r->connection->conn_config, &core_module, sock);
++ _DBG("not the right socket?", 0);
++ return OK;
++ }
++
++ switch (CHILD_INFO_TABLE[my_child_num].type)
++ {
++ case CHILD_TYPE_MULTIPLEXER:
++ {
++ _DBG("MULTIPLEXER => Determining if request should be passed. "
++ "Child Num: %d, dest-child: %d, hostname from server: %s r->hostname=%s r->the_request=\"%s\"",
++ my_child_num, processor->id, r->server->server_hostname, r->hostname, r->the_request);
++
++ if (processor->id != my_child_num)
++ {
++ if (processor->status == CHILD_STATUS_STANDBY)
++ {
++ _DBG("Activating child #%d", processor->id);
++ processor->status = CHILD_STATUS_STARTING;
++ }
++
++ _DBG("Passing request.",0);
++ if (pass_request(r, processor) == -1)
++ {
++ ap_log_error(APLOG_MARK, APLOG_ERR, 0,
++ ap_server_conf, "Could not pass request to proper " "child, request will not be honoured.");
++ return DECLINED;
++ }
++ _DBG("doing longjmp",0);
++ longjmp(CHILD_INFO_TABLE[my_child_num].jmpbuffer, 1);
++ _DBG("request declined at our site",0);
++ return DECLINED;
++ _DBG("OUH! we should never reach this point",0);
++ }
++ _DBG("WTF: the server is assigned to the multiplexer! ... dropping request",0);
++ return DECLINED;
++ }
++ case CHILD_TYPE_PROCESSOR:
++ case CHILD_TYPE_WORKER:
++ {
++ if (sconf->senv != CHILD_INFO_TABLE[my_child_num].senv) {
++ ap_log_error(APLOG_MARK, APLOG_WARNING,
++ 0, ap_server_conf,
++ "invalid virtualhost for this child! (%s)", r->hostname);
++ ap_lingering_close(r->connection);
++ return HTTP_REQUEST_TIME_OUT;
++ }
++
++ _DBG("%s %d", child_type_string(CHILD_INFO_TABLE[my_child_num].type), my_child_num);
++ _DBG("request for %s / (server %s) seems to be for us", r->hostname, r->server->server_hostname);
++
++ if (server_env_cleanup)
++ {
++ int i;
++ int input = sconf->senv->input;
++ int output = sconf->senv->output;
++
++ _DBG("performing handle cleanup");
++ for (i = 0; i < NUM_SENV; i++)
++ {
++ if (SENV[i].input > 0 && SENV[i].input != input) {
++ int retval = close(SENV[i].input);
++ if (retval < 0) {
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
++ "close(%d) failed", SENV[i].input);
++ }
++ }
++ if (SENV[i].output > 0 && SENV[i].output != output) {
++ int retval = close(SENV[i].output);
++ if (retval < 0) {
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
++ "close(%d) failed", SENV[i].output);
++ }
++ }
++ }
++ server_env_cleanup = 0;
++ }
++
++ return OK;
++ }
++ default:
++ {
++ _DBG("unspecified child type %d in %d, dropping request",
++ CHILD_INFO_TABLE[my_child_num].type, my_child_num);
++ return DECLINED;
++ }
++ }
++
++ _DBG("THIS POINT SHOULD NOT BE REACHED!",0);
++ return OK;
++}
++
++static int peruser_status_hook(request_rec *r, int flags)
++{
++ int x;
++ server_env_t *senv;
++
++ if (flags & AP_STATUS_SHORT)
++ return OK;
++
++ ap_rputs("<hr>\n", r);
++ ap_rputs("<h2>peruser status</h2>\n", r);
++ ap_rputs("<table border=\"0\">\n", r);
++ ap_rputs("<tr><td>ID</td><td>PID</td><td>STATUS</td><td>TYPE</td><td>UID</td>"
++ "<td>GID</td><td>CHROOT</td><td>INPUT</td>"
++ "<td>OUTPUT</td><td>SOCK_FD</td>"
++ "<td>TOTAL PROCESSORS</td><td>MAX PROCESSORS</td>"
++ "<td>IDLE PROCESSORS</td><td>MIN FREE PROCESSORS</td></tr>\n", r);
++ for (x = 0; x < NUM_CHILDS; x++)
++ {
++ senv = CHILD_INFO_TABLE[x].senv;
++ ap_rprintf(r, "<tr><td>%3d</td><td>%5d</td><td>%8s</td><td>%12s</td>"
++ "<td>%4d</td><td>%4d</td><td>%25s</td><td>%5d</td>"
++ "<td>%6d</td><td>%7d</td><td>%d</td><td>%d</td>"
++ "<td>%d</td><td>%d</td></tr>\n",
++ CHILD_INFO_TABLE[x].id,
++ CHILD_INFO_TABLE[x].pid,
++ child_status_string(CHILD_INFO_TABLE[x].status),
++ child_type_string(CHILD_INFO_TABLE[x].type),
++ senv == NULL ? -1 : senv->uid,
++ senv == NULL ? -1 : senv->gid,
++ senv == NULL ? NULL : senv->chroot,
++ senv == NULL ? -1 : CHILD_INFO_TABLE[x].senv->input,
++ senv == NULL ? -1 : CHILD_INFO_TABLE[x].senv->output,
++ CHILD_INFO_TABLE[x].sock_fd,
++ total_processors(x),
++ senv == NULL ? -1 : CHILD_INFO_TABLE[x].senv->max_processors,
++ idle_processors(x),
++ senv == NULL ? -1 : CHILD_INFO_TABLE[x].senv->min_free_processors
++ );
++ }
++ ap_rputs("</table>\n", r);
++
++ if (grace_children > 0) {
++ ap_rputs("<h2>peruser graceful children status</h2>\n", r);
++ ap_rprintf(r, "%d of total %d still living<br />\n", grace_children_alive, grace_children);
++ ap_rputs("<table border=\"0\">\n", r);
++ ap_rputs("<tr><td>ID</td><td>PID</td><td>STATUS</td><td>TYPE</td></tr>\n", r);
++ for (x = 0; x < grace_children; x++) {
++ ap_rprintf(r, "<tr><td>%3d</td><td>%5d</td><td>%8s</td><td>%12s</td></tr>\n",
++ child_grace_info_table[x].id,
++ child_grace_info_table[x].pid,
++ child_status_string(child_grace_info_table[x].status),
++ child_type_string(child_grace_info_table[x].type)
++ );
++ }
++ ap_rputs("</table>\n", r);
++ }
++ return OK;
++}
++
++static void peruser_hooks(apr_pool_t *p)
++{
++ /* The peruser open_logs phase must run before the core's, or stderr
++ * will be redirected to a file, and the messages won't print to the
++ * console.
++ */
++ static const char *const aszSucc[] = {"core.c", NULL};
++
++#ifdef AUX3
++ (void) set42sig();
++#endif
++
++ ap_hook_open_logs(peruser_open_logs, NULL, aszSucc, APR_HOOK_MIDDLE);
++ ap_hook_pre_config(peruser_pre_config, NULL, NULL, APR_HOOK_MIDDLE);
++ ap_hook_post_config(peruser_post_config, NULL, NULL, APR_HOOK_MIDDLE);
++
++ /* Both of these must be run absolutely first. If this request isn't for
++ * this server then we need to forward it to the proper child. No sense
++ * tying up this server running more post_read request hooks if it is
++ * just going to be forwarded along. The process_connection hook allows
++ * peruser to receive the passed request correctly, by automatically
++ * filling in the core_input_filter's ctx pointer.
++ */
++ ap_hook_post_read_request(peruser_post_read, NULL, NULL,
++ APR_HOOK_REALLY_FIRST);
++ ap_hook_process_connection(peruser_process_connection, NULL, NULL,
++ APR_HOOK_REALLY_FIRST);
++
++ APR_OPTIONAL_HOOK(ap, status_hook, peruser_status_hook, NULL, NULL, APR_HOOK_MIDDLE);
++}
++
++/* we define an Processor w/ specific uid/gid */
++static const char *cf_Processor(cmd_parms *cmd, void *dummy,
++ const char *user_name, const char *group_name, const char *chroot)
++{
++ uid_t uid = ap_uname2id(user_name);
++ gid_t gid = ap_gname2id(group_name);
++
++ _DBG("user=%s:%d group=%s:%d chroot=%s",
++ user_name, uid, group_name, gid, chroot);
++
++ return child_add(CHILD_TYPE_PROCESSOR, CHILD_STATUS_STANDBY,
++ cmd->pool, uid, gid, chroot);
++}
++
++/* we define an Multiplexer child w/ specific uid/gid */
++static const char *cf_Multiplexer(cmd_parms *cmd, void *dummy,
++ const char *user_name, const char *group_name, const char *chroot)
++{
++ uid_t uid = ap_uname2id(user_name);
++ gid_t gid = ap_gname2id(group_name);
++
++ _DBG("user=%s:%d group=%s:%d chroot=%s [multiplexer id %d]",
++ user_name, uid, group_name, gid, chroot, NUM_CHILDS);
++
++ return child_add(CHILD_TYPE_MULTIPLEXER, CHILD_STATUS_STARTING,
++ cmd->pool, uid, gid, chroot);
++}
++
++static const char* cf_ServerEnvironment(cmd_parms *cmd, void *dummy,
++ const char *user_name, const char *group_name, const char *chroot)
++{
++ int uid = ap_uname2id(user_name);
++ int gid = ap_gname2id(group_name);
++ peruser_server_conf *sconf = PERUSER_SERVER_CONF(cmd->server->module_config);
++
++ _DBG("function entered", 0);
++
++ if (chroot && !ap_is_directory(cmd->pool, chroot))
++ return apr_psprintf(cmd->pool, "Error: chroot directory [%s] does not exist", chroot);
++
++ sconf->senv = senv_add(uid, gid, chroot);
++
++ _DBG("user=%s:%d group=%s:%d chroot=%s numchilds=%d",
++ user_name, uid, group_name, gid, chroot, NUM_CHILDS);
++
++ return NULL;
++}
++
++static const char *set_min_free_servers(cmd_parms *cmd, void *dummy, const char *arg)
++{
++ const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
++ if (err != NULL) {
++ return err;
++ }
++
++ ap_min_free_processors = atoi(arg);
++ if (ap_min_free_processors <= 0) {
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "WARNING: detected MinSpareServers set to non-positive.");
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "Resetting to 1 to avoid almost certain Apache failure.");
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "Please read the documentation.");
++ ap_min_free_processors = 1;
++ }
++
++ return NULL;
++}
++
++static const char *set_max_clients (cmd_parms *cmd, void *dummy, const char *arg)
++{
++ const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
++ if (err != NULL) {
++ return err;
++ }
++
++ ap_daemons_limit = atoi(arg);
++ if (ap_daemons_limit > server_limit) {
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "WARNING: MaxClients of %d exceeds ServerLimit value "
++ "of %d servers,", ap_daemons_limit, server_limit);
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ " lowering MaxClients to %d. To increase, please "
++ "see the ServerLimit", server_limit);
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ " directive.");
++ ap_daemons_limit = server_limit;
++ }
++ else if (ap_daemons_limit < 1) {
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "WARNING: Require MaxClients > 0, setting to 1");
++ ap_daemons_limit = 1;
++ }
++ return NULL;
++}
++
++static const char *set_min_processors (cmd_parms *cmd, void *dummy, const char *arg)
++{
++ peruser_server_conf *sconf;
++ int min_procs;
++ const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_LOC_FILE|NOT_IN_LIMIT);
++
++ if (err != NULL) {
++ return err;
++ }
++
++ min_procs = atoi(arg);
++
++ if (min_procs < 1) {
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "WARNING: Require MaxProcessors > 0, setting to 1");
++ min_procs = 1;
++ }
++
++ if (ap_check_cmd_context(cmd, NOT_IN_VIRTUALHOST) != NULL) {
++ sconf = PERUSER_SERVER_CONF(cmd->server->module_config);
++ sconf->senv->min_processors = min_procs;
++ }
++ else {
++ ap_min_processors = min_procs;
++ }
++
++ return NULL;
++}
++
++static const char *set_min_free_processors (cmd_parms *cmd, void *dummy, const char *arg)
++{
++ peruser_server_conf *sconf;
++ int min_free_procs;
++ const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_LOC_FILE|NOT_IN_LIMIT);
++
++ if (err != NULL) {
++ return err;
++ }
++
++ min_free_procs = atoi(arg);
++
++ if (min_free_procs < 1) {
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "WARNING: Require MinSpareProcessors > 0, setting to 1");
++ min_free_procs = 1;
++ }
++
++ if (ap_check_cmd_context(cmd, NOT_IN_VIRTUALHOST) != NULL) {
++ sconf = PERUSER_SERVER_CONF(cmd->server->module_config);
++ sconf->senv->min_free_processors = min_free_procs;
++ }
++ else {
++ ap_min_free_processors = min_free_procs;
++ }
++
++ return NULL;
++}
++
++static const char *set_max_processors (cmd_parms *cmd, void *dummy, const char *arg)
++{
++ peruser_server_conf *sconf;
++ int max_procs;
++ const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_LOC_FILE|NOT_IN_LIMIT);
++
++ if (err != NULL) {
++ return err;
++ }
++
++ max_procs = atoi(arg);
++
++ if (max_procs < 1) {
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "WARNING: Require MaxProcessors > 0, setting to 1");
++ max_procs = 1;
++ }
++
++ if (ap_check_cmd_context(cmd, NOT_IN_VIRTUALHOST) != NULL) {
++ sconf = PERUSER_SERVER_CONF(cmd->server->module_config);
++ sconf->senv->max_processors = max_procs;
++ }
++ else {
++ ap_max_processors = max_procs;
++ }
++
++ return NULL;
++}
++
++static const char *set_server_limit (cmd_parms *cmd, void *dummy, const char *arg)
++{
++ int tmp_server_limit;
++
++ const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
++ if (err != NULL) {
++ return err;
++ }
++
++ tmp_server_limit = atoi(arg);
++ /* you cannot change ServerLimit across a restart; ignore
++ * any such attempts
++ */
++ if (first_server_limit &&
++ tmp_server_limit != server_limit) {
++ /* how do we log a message? the error log is a bit bucket at this
++ * point; we'll just have to set a flag so that ap_mpm_run()
++ * logs a warning later
++ */
++ changed_limit_at_restart = 1;
++ return NULL;
++ }
++ server_limit = tmp_server_limit;
++
++ if (server_limit > MAX_SERVER_LIMIT) {
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "WARNING: ServerLimit of %d exceeds compile time limit "
++ "of %d servers,", server_limit, MAX_SERVER_LIMIT);
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ " lowering ServerLimit to %d.", MAX_SERVER_LIMIT);
++ server_limit = MAX_SERVER_LIMIT;
++ }
++ else if (server_limit < 1) {
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "WARNING: Require ServerLimit > 0, setting to 1");
++ server_limit = 1;
++ }
++ return NULL;
++}
++
++static const char *set_expire_timeout (cmd_parms *cmd, void *dummy, const char *arg) {
++ const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
++ if (err != NULL) {
++ return err;
++ }
++
++ expire_timeout = atoi(arg);
++
++ return NULL;
++}
++
++static const char *set_idle_timeout (cmd_parms *cmd, void *dummy, const char *arg) {
++ const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
++ if (err != NULL) {
++ return err;
++ }
++
++ idle_timeout = atoi(arg);
++
++ return NULL;
++}
++
++static const command_rec peruser_cmds[] = {
++UNIX_DAEMON_COMMANDS,
++LISTEN_COMMANDS,
++AP_INIT_TAKE1("MinSpareProcessors", set_min_free_processors, NULL, RSRC_CONF,
++ "Minimum number of idle children, to handle request spikes"),
++AP_INIT_TAKE1("MinSpareServers", set_min_free_servers, NULL, RSRC_CONF,
++ "Minimum number of idle children, to handle request spikes"),
++AP_INIT_TAKE1("MaxClients", set_max_clients, NULL, RSRC_CONF,
++ "Maximum number of children alive at the same time"),
++AP_INIT_TAKE1("MinProcessors", set_min_processors, NULL, RSRC_CONF,
++ "Minimum number of processors per vhost"),
++AP_INIT_TAKE1("MaxProcessors", set_max_processors, NULL, RSRC_CONF,
++ "Maximum number of processors per vhost"),
++AP_INIT_TAKE1("ServerLimit", set_server_limit, NULL, RSRC_CONF,
++ "Maximum value of MaxClients for this run of Apache"),
++AP_INIT_TAKE1("ExpireTimeout", set_expire_timeout, NULL, RSRC_CONF,
++ "Maximum idle time before a child is killed, 0 to disable"),
++AP_INIT_TAKE1("IdleTimeout", set_idle_timeout, NULL, RSRC_CONF,
++ "Maximum time before a child is killed after being idle, 0 to disable"),
++AP_INIT_TAKE23("Multiplexer", cf_Multiplexer, NULL, RSRC_CONF,
++ "Specify an Multiplexer Child configuration."),
++AP_INIT_TAKE23("Processor", cf_Processor, NULL, RSRC_CONF,
++ "Specify a User and Group for a specific child process."),
++AP_INIT_TAKE23("ServerEnvironment", cf_ServerEnvironment, NULL, RSRC_CONF,
++ "Specify the server environment for this virtual host."),
++{ NULL }
++};
++
++module AP_MODULE_DECLARE_DATA mpm_peruser_module = {
++ MPM20_MODULE_STUFF,
++ ap_mpm_rewrite_args, /* hook to run before apache parses args */
++ NULL, /* create per-directory config structure */
++ NULL, /* merge per-directory config structures */
++ peruser_create_config, /* create per-server config structure */
++ NULL, /* merge per-server config structures */
++ peruser_cmds, /* command apr_table_t */
++ peruser_hooks, /* register hooks */
++};