selinux-policy/refpolicy/policy/modules/system/libraries.te

policy_module(libraries,1.0)

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

#
# ld_so_cache_t is the type of /etc/ld.so.cache.
#
type ld_so_cache_t;
files_type(ld_so_cache_t)

#
# ld_so_t is the type of the system dynamic loaders.
#
type ld_so_t;
files_type(ld_so_t)

#
# lib_t is the type of files in the system lib directories.
#
type lib_t;
files_type(lib_t)

#
# shlib_t is the type of shared objects in the system lib
# directories.
#
type shlib_t;
files_type(shlib_t)

#
# texrel_shlib_t is the type of shared objects in the system lib
# directories, which require text relocation.
#

ifdef(`targeted_policy',`
	typealias lib_t alias texrel_shlib_t;
',`
	type texrel_shlib_t;
	files_type(texrel_shlib_t)
')

kernel_use_ld_so_from(lib_t,ld_so_t,ld_so_cache_t)
kernel_use_shared_libs_from(lib_t,{ shlib_t texrel_shlib_t })

########################################
#
# ldconfig local policy
#
type ldconfig_t;
type ldconfig_exec_t;
init_system_domain(ldconfig_t,ldconfig_exec_t)
role system_r types ldconfig_t;

allow ldconfig_t ld_so_cache_t:file create_file_perms;
files_create_etc_config(ldconfig_t,ld_so_cache_t,file)

allow ldconfig_t lib_t:dir rw_dir_perms;
allow ldconfig_t lib_t:lnk_file { getattr create read unlink };
allow ldconfig_t ld_so_t:lnk_file r_file_perms;
allow ldconfig_t ld_so_t:file rx_file_perms;
allow ldconfig_t ld_so_cache_t:file r_file_perms;
allow ldconfig_t { shlib_t texrel_shlib_t }:lnk_file r_file_perms;
allow ldconfig_t { shlib_t texrel_shlib_t }:file rx_file_perms;

kernel_read_system_state(ldconfig_t)

fs_getattr_xattr_fs(ldconfig_t)

domain_use_wide_inherit_fd(ldconfig_t)

files_search_var_lib(ldconfig_t)
files_read_etc_files(ldconfig_t)
files_search_tmp(ldconfig_t)
# for when /etc/ld.so.cache is mislabeled:
files_delete_etc_files(ldconfig_t)

init_use_script_pty(ldconfig_t)

logging_send_syslog_msg(ldconfig_t)

userdom_use_all_user_fd(ldconfig_t)

ifdef(`hide_broken_symptoms',`
	optional_policy(`unconfined.te',`
		unconfined_dontaudit_rw_tcp_socket(ldconfig_t)
	')
')

ifdef(`targeted_policy',`
	allow ldconfig_t lib_t:file r_file_perms;
	unconfined_domain_template(ldconfig_t) 
')

optional_policy(`apache.te',`
	# dontaudit access to /usr/lib/apache, normal programs cannot read these libs anyway
	dontaudit ldconfig_t httpd_modules_t:dir search;
')