path: root/policy/modules/system/lvm.te

policy_module(lvm)

########################################
#
# Declarations
#

type lvm_t;
type lvm_exec_t;
init_system_domain(lvm_t, lvm_exec_t)
init_named_socket_activation(lvm_t, lvm_runtime_t)
# needs privowner because it assigns the identity system_u to device nodes
# but runs as the identity of the sysadmin
domain_obj_id_change_exemption(lvm_t)
role system_r types lvm_t;

type lvm_etc_t;
files_type(lvm_etc_t)

type lvm_lock_t;
files_lock_file(lvm_lock_t)
optional_policy(`
        systemd_tmpfilesd_managed(lvm_lock_t)
')

type lvm_metadata_t;
files_type(lvm_metadata_t)

type lvm_runtime_t alias lvm_var_run_t;
files_runtime_file(lvm_runtime_t)

type lvm_unit_t;
init_unit_file(lvm_unit_t)

type lvm_tmp_t;
files_tmp_file(lvm_tmp_t)

type lvm_tmpfs_t;
files_tmpfs_file(lvm_tmpfs_t)

type lvm_var_lib_t;
files_type(lvm_var_lib_t)

########################################
#
# LVM Local policy
#

# DAC overrides and mknod for modifying /dev entries (vgmknodes)
# rawio needed for dmraid
# net_admin for multipath
allow lvm_t self:capability { chown dac_override fowner ipc_lock mknod net_admin sys_admin sys_nice sys_rawio sys_resource };
dontaudit lvm_t self:capability sys_tty_config;
allow lvm_t self:process { sigchld sigkill sigstop signull signal setfscreate setrlimit };
# LVM will complain a lot if it cannot set its priority.
allow lvm_t self:process setsched;
allow lvm_t self:file rw_file_perms;
allow lvm_t self:fifo_file manage_fifo_file_perms;
allow lvm_t self:unix_dgram_socket create_socket_perms;
allow lvm_t self:netlink_kobject_uevent_socket create_socket_perms;
allow lvm_t self:sem create_sem_perms;
# gt: the following is for sockets in the AF_ALG namespace (userspace interface to the kernel Crypto API)
allow lvm_t self:socket create_stream_socket_perms;
# gt: the following allows opening cryptsetup devices
allow lvm_t self:key { search write };

allow lvm_t self:unix_stream_socket { connectto create_stream_socket_perms };

manage_dirs_pattern(lvm_t, lvm_tmp_t, lvm_tmp_t)
manage_files_pattern(lvm_t, lvm_tmp_t, lvm_tmp_t)
files_tmp_filetrans(lvm_t, lvm_tmp_t, { file dir })

manage_dirs_pattern(lvm_t, lvm_tmpfs_t, lvm_tmpfs_t)
manage_files_pattern(lvm_t, lvm_tmpfs_t, lvm_tmpfs_t)
fs_tmpfs_filetrans(lvm_t, lvm_tmpfs_t, { dir file })

# /lib/lvm-<version> holds the actual LVM binaries (and symlinks)
read_files_pattern(lvm_t, lvm_exec_t, lvm_exec_t)
read_lnk_files_pattern(lvm_t, lvm_exec_t, lvm_exec_t)

# LVM is split into many individual binaries
can_exec(lvm_t, lvm_exec_t)

# Creating lock files
manage_files_pattern(lvm_t, lvm_lock_t, lvm_lock_t)
create_dirs_pattern(lvm_t, lvm_lock_t, lvm_lock_t)
files_lock_filetrans(lvm_t, lvm_lock_t, file)
files_lock_filetrans(lvm_t, lvm_lock_t, dir, "lvm")

manage_dirs_pattern(lvm_t, lvm_var_lib_t, lvm_var_lib_t)
manage_files_pattern(lvm_t, lvm_var_lib_t, lvm_var_lib_t)
files_var_lib_filetrans(lvm_t, lvm_var_lib_t, { dir file })

manage_dirs_pattern(lvm_t, lvm_runtime_t, lvm_runtime_t)
manage_files_pattern(lvm_t, lvm_runtime_t, lvm_runtime_t)
manage_sock_files_pattern(lvm_t, lvm_runtime_t, lvm_runtime_t)
files_runtime_filetrans(lvm_t, lvm_runtime_t, { file sock_file })

read_files_pattern(lvm_t, lvm_etc_t, lvm_etc_t)
allow lvm_t lvm_etc_t:file map;

read_lnk_files_pattern(lvm_t, lvm_etc_t, lvm_etc_t)
# create /etc/lvm/archive
allow lvm_t lvm_etc_t:dir create_dir_perms;
# Map for vgchange on /etc/lvm/backup/ files
allow lvm_t lvm_metadata_t:file map;
# Write to /etc/lvm, /etc/lvmtab, /etc/lvmtab.d
manage_files_pattern(lvm_t, lvm_metadata_t, lvm_metadata_t)
filetrans_pattern(lvm_t, lvm_etc_t, lvm_metadata_t, file)
files_etc_filetrans(lvm_t, lvm_metadata_t, file)
files_search_mnt(lvm_t)

kernel_request_load_module(lvm_t)
kernel_get_sysvipc_info(lvm_t)
kernel_read_system_state(lvm_t)
# Read system variables in /proc/sys
kernel_read_kernel_sysctls(lvm_t)
kernel_read_fs_sysctls(lvm_t)
# for when /usr is not mounted:
kernel_dontaudit_search_unlabeled(lvm_t)
# it has no reason to need this
kernel_dontaudit_getattr_core_if(lvm_t)
kernel_use_fds(lvm_t)
kernel_search_debugfs(lvm_t)
# multipath
kernel_read_vm_overcommit_sysctl(lvm_t)

corecmd_exec_bin(lvm_t)
corecmd_exec_shell(lvm_t)

dev_create_generic_chr_files(lvm_t)
dev_delete_generic_dirs(lvm_t)
dev_read_rand(lvm_t)
dev_read_urand(lvm_t)
dev_rw_lvm_control(lvm_t)
dev_manage_generic_symlinks(lvm_t)
dev_relabel_generic_dev_dirs(lvm_t)
dev_manage_generic_blk_files(lvm_t)
# Read /sys/block. Device mapper metadata is kept there.
# Write read_ahead_kb
dev_rw_sysfs(lvm_t)
# cjp: this has no effect since LVM does not
# have lnk_file relabelto for anything else.
# perhaps this should be blk_files?
dev_relabel_generic_symlinks(lvm_t)
# LVM (vgscan) scans for devices by stating every file in /dev and applying a regex...
dev_dontaudit_read_all_chr_files(lvm_t)
dev_dontaudit_read_all_blk_files(lvm_t)
dev_dontaudit_getattr_generic_chr_files(lvm_t)
dev_dontaudit_getattr_generic_blk_files(lvm_t)
dev_dontaudit_getattr_generic_pipes(lvm_t)
dev_create_generic_dirs(lvm_t)
# the following one is needed by cryptsetup
dev_getattr_fs(lvm_t)
# for systemd-cryptsetup
dev_write_kmsg(lvm_t)

domain_use_interactive_fds(lvm_t)
domain_read_all_domains_state(lvm_t)

files_read_usr_files(lvm_t)
files_read_etc_files(lvm_t)
files_watch_etc_files(lvm_t)
files_read_etc_runtime_files(lvm_t)

fs_getattr_cgroup(lvm_t)
fs_getattr_xattr_fs(lvm_t)
fs_search_auto_mountpoints(lvm_t)
fs_list_tmpfs(lvm_t)
fs_read_tmpfs_symlinks(lvm_t)
fs_dontaudit_read_removable_files(lvm_t)
fs_dontaudit_getattr_tmpfs_files(lvm_t)
fs_rw_anon_inodefs_files(lvm_t)
fs_mmap_rw_all_image_files(lvm_t)

mls_file_read_all_levels(lvm_t)
mls_file_write_to_clearance(lvm_t)

selinux_get_fs_mount(lvm_t)
selinux_validate_context(lvm_t)
selinux_compute_access_vector(lvm_t)
selinux_compute_create_context(lvm_t)
selinux_compute_relabel_context(lvm_t)
selinux_compute_user_contexts(lvm_t)

storage_relabel_fixed_disk(lvm_t)
storage_dontaudit_read_removable_device(lvm_t)
# LVM creates block devices in /dev/mapper or /dev/<vg>
# depending on its version
# LVM(2) needs to create directories (/dev/mapper, /dev/<vg>)
# and links from /dev/<vg> to /dev/mapper/<vg>-<lv>
# cjp: needs to create an interface here for fixed disk create
storage_dev_filetrans_fixed_disk(lvm_t, blk_file)
# Access raw devices and old /dev/lvm (c 109,0).  Is this needed?
storage_manage_fixed_disk(lvm_t)

term_use_all_terms(lvm_t)

init_use_fds(lvm_t)
init_dontaudit_getattr_initctl(lvm_t)
init_use_script_ptys(lvm_t)
init_read_script_state(lvm_t)
init_read_script_tmp_files(lvm_t)
# for systemd-cryptsetup to talk to /run/systemd/journal/socket
init_stream_connect(lvm_t)

logging_send_syslog_msg(lvm_t)

miscfiles_read_localization(lvm_t)

seutil_read_config(lvm_t)
seutil_read_file_contexts(lvm_t)
seutil_search_default_contexts(lvm_t)
seutil_sigchld_newrole(lvm_t)

# multipath
sysnet_read_config(lvm_t)
sysnet_write_config(lvm_t)

userdom_use_inherited_user_terminals(lvm_t)

ifdef(`init_systemd',`
	fs_getattr_cgroup(lvm_t)
	fs_list_pstore_dirs(lvm_t)
	fs_manage_hugetlbfs_dirs(lvm_t)
	fs_search_cgroup_dirs(lvm_t)

	init_rw_stream_sockets(lvm_t)

	miscfiles_read_generic_certs(lvm_t)
')

ifdef(`distro_redhat',`
	# this is from the initrd:
	kernel_rw_unlabeled_dirs(lvm_t)

	optional_policy(`
		unconfined_domain(lvm_t)
	')
')

optional_policy(`
	bootloader_rw_tmp_files(lvm_t)
')

optional_policy(`
	dpkg_script_rw_pipes(lvm_t)
')

optional_policy(`
	gpm_dontaudit_getattr_gpmctl(lvm_t)
')

optional_policy(`
	dbus_system_bus_client(lvm_t)
')

optional_policy(`
	modutils_domtrans(lvm_t)
')

optional_policy(`
	rpm_manage_script_tmp_files(lvm_t)
')

optional_policy(`
	systemd_rw_homework_semaphores(lvm_t)
')

optional_policy(`
	udev_read_runtime_files(lvm_t)
')

optional_policy(`
	usermanage_read_crack_db(lvm_t)
')

optional_policy(`
	virt_manage_images(lvm_t)
')

optional_policy(`
	xen_append_log(lvm_t)
	xen_dontaudit_rw_unix_stream_sockets(lvm_t)
')

ifdef(`distro_gentoo',`
	#############################
	#
	# Local lvm policy
	#

	# cryptsetup support bug 530918
	allow lvm_t self:socket create_stream_socket_perms;

	create_dirs_pattern(lvm_t, lvm_etc_t, lvm_metadata_t)
	# Bug 529430 comment 6
	create_dirs_pattern(lvm_t, lvm_etc_t, lvm_etc_t)
	# Bug 529430 comment 8
	manage_fifo_files_pattern(lvm_t, lvm_runtime_t, lvm_runtime_t)

	# Bug 615300
	init_read_script_pipes(lvm_t)

	filetrans_pattern(lvm_t, lvm_etc_t, lvm_metadata_t, dir, "cache")

	kernel_request_load_module(lvm_t)

	dev_filetrans(lvm_t, lvm_lock_t, dir, ".lvm")

	optional_policy(`
		udev_read_runtime_files(lvm_t)
	')
')