selinux-policy/policy/modules/system/init.te

policy_module(init, 1.14.0)

gen_require(`
	class passwd rootok;
')

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

## <desc>
## <p>
## Enable support for upstart as the init program.
## </p>
## </desc>
gen_tunable(init_upstart, false)

# used for direct running of init scripts
# by admin domains
attribute direct_run_init;
attribute direct_init;
attribute direct_init_entry;

attribute init_script_domain_type;
attribute init_script_file_type;
attribute init_run_all_scripts_domain;

# Mark process types as daemons
attribute daemon;

#
# init_t is the domain of the init process.
#
type init_t;
type init_exec_t;
domain_type(init_t)
domain_entry_file(init_t, init_exec_t)
kernel_domtrans_to(init_t, init_exec_t)
role system_r types init_t;

#
# init_var_run_t is the type for /var/run/shutdown.pid.
#
type init_var_run_t;
files_pid_file(init_var_run_t)

#
# initctl_t is the type of the named pipe created 
# by init during initialization.  This pipe is used
# to communicate with init.
#
type initctl_t;
files_type(initctl_t)
mls_trusted_object(initctl_t)

type initrc_t, init_script_domain_type, init_run_all_scripts_domain;
type initrc_exec_t, init_script_file_type;
domain_type(initrc_t)
domain_entry_file(initrc_t, initrc_exec_t)
role system_r types initrc_t;
# should be part of the true block
# of the below init_upstart tunable
# but this has a typeattribute in it
corecmd_shell_entry_type(initrc_t)

type initrc_devpts_t;
term_pty(initrc_devpts_t)
files_type(initrc_devpts_t)

type initrc_state_t;
files_type(initrc_state_t)

type initrc_tmp_t;
files_tmp_file(initrc_tmp_t)

type initrc_var_run_t;
files_pid_file(initrc_var_run_t)

ifdef(`enable_mls',`
	kernel_ranged_domtrans_to(init_t, init_exec_t, s0 - mls_systemhigh)
')

########################################
#
# Init local policy
#

# Use capabilities. old rule:
allow init_t self:capability ~sys_module;
# is ~sys_module really needed? observed: 
# sys_boot
# sys_tty_config
# kill: now provided by domain_kill_all_domains()
# setuid (from /sbin/shutdown)
# sys_chroot (from /usr/bin/chroot): now provided by corecmd_chroot_exec_chroot()

allow init_t self:fifo_file rw_fifo_file_perms;

# Re-exec itself
can_exec(init_t, init_exec_t)

allow init_t initrc_t:unix_stream_socket connectto;

# For /var/run/shutdown.pid.
allow init_t init_var_run_t:file manage_file_perms;
files_pid_filetrans(init_t, init_var_run_t, file)

allow init_t initctl_t:fifo_file manage_fifo_file_perms;
dev_filetrans(init_t, initctl_t, fifo_file)
fs_associate_tmpfs(initctl_t)

# Modify utmp.
allow init_t initrc_var_run_t:file { rw_file_perms setattr };

kernel_read_system_state(init_t)
kernel_share_state(init_t)

corecmd_exec_chroot(init_t)
corecmd_exec_bin(init_t)

dev_read_sysfs(init_t)

domain_kill_all_domains(init_t)
domain_signal_all_domains(init_t)
domain_signull_all_domains(init_t)
domain_sigstop_all_domains(init_t)
domain_sigstop_all_domains(init_t)
domain_sigchld_all_domains(init_t)

files_read_etc_files(init_t)
files_rw_generic_pids(init_t)
files_dontaudit_search_isid_type_dirs(init_t)
files_manage_etc_runtime_files(init_t)
files_etc_filetrans_etc_runtime(init_t, file)
# Run /etc/X11/prefdm:
files_exec_etc_files(init_t)
# file descriptors inherited from the rootfs:
files_dontaudit_rw_root_files(init_t)
files_dontaudit_rw_root_chr_files(init_t)

# cjp: this may be related to /dev/log
fs_write_ramfs_sockets(init_t)

mcs_process_set_categories(init_t)
mcs_killall(init_t)

mls_file_read_all_levels(init_t)
mls_file_write_all_levels(init_t)
mls_process_write_down(init_t)
mls_fd_use_all_levels(init_t)

selinux_set_all_booleans(init_t)

term_use_all_terms(init_t)

# Run init scripts.
init_domtrans_script(init_t)

libs_rw_ld_so_cache(init_t)

logging_send_syslog_msg(init_t)
logging_rw_generic_logs(init_t)

seutil_read_config(init_t)

miscfiles_read_localization(init_t)

ifdef(`distro_gentoo',`
	allow init_t self:process { getcap setcap };
')

ifdef(`distro_redhat',`
	fs_rw_tmpfs_chr_files(init_t)
	fs_tmpfs_filetrans(init_t, initctl_t, fifo_file)
')

tunable_policy(`init_upstart',`
	corecmd_shell_domtrans(init_t, initrc_t)
',`
	# Run the shell in the sysadm role for single-user mode.
	# causes problems with upstart
	sysadm_shell_domtrans(init_t)
')

optional_policy(`
	auth_rw_login_records(init_t)
')

optional_policy(`
	nscd_socket_use(init_t)
')

optional_policy(`
	unconfined_domain(init_t)
')

########################################
#
# Init script local policy
#

allow initrc_t self:process { getpgid setsched setpgid setrlimit getsched };
allow initrc_t self:capability ~{ sys_admin sys_module };
dontaudit initrc_t self:capability sys_module; # sysctl is triggering this
allow initrc_t self:passwd rootok;

# Allow IPC with self
allow initrc_t self:unix_dgram_socket create_socket_perms;
allow initrc_t self:unix_stream_socket { create listen accept ioctl read getattr write setattr append bind connect getopt setopt shutdown connectto };
allow initrc_t self:tcp_socket create_stream_socket_perms;
allow initrc_t self:udp_socket create_socket_perms;
allow initrc_t self:fifo_file rw_file_perms;

allow initrc_t initrc_devpts_t:chr_file rw_term_perms;
term_create_pty(initrc_t, initrc_devpts_t)

# Going to single user mode
init_exec(initrc_t)

can_exec(initrc_t, init_script_file_type)

domtrans_pattern(init_run_all_scripts_domain, initrc_exec_t, initrc_t)

manage_dirs_pattern(initrc_t, initrc_state_t, initrc_state_t)
manage_files_pattern(initrc_t, initrc_state_t, initrc_state_t)
manage_lnk_files_pattern(initrc_t, initrc_state_t, initrc_state_t)
manage_fifo_files_pattern(initrc_t, initrc_state_t, initrc_state_t)

allow initrc_t initrc_var_run_t:file manage_file_perms;
files_pid_filetrans(initrc_t, initrc_var_run_t, file)

can_exec(initrc_t, initrc_tmp_t)
allow initrc_t initrc_tmp_t:file manage_file_perms;
allow initrc_t initrc_tmp_t:dir manage_dir_perms;
files_tmp_filetrans(initrc_t, initrc_tmp_t, { file dir })

init_write_initctl(initrc_t)

kernel_read_system_state(initrc_t)
kernel_read_software_raid_state(initrc_t)
kernel_read_network_state(initrc_t)
kernel_read_ring_buffer(initrc_t)
kernel_change_ring_buffer_level(initrc_t)
kernel_clear_ring_buffer(initrc_t)
kernel_get_sysvipc_info(initrc_t)
kernel_read_all_sysctls(initrc_t)
kernel_rw_all_sysctls(initrc_t)
# for lsof which is used by alsa shutdown:
kernel_dontaudit_getattr_message_if(initrc_t)

files_read_kernel_symbol_table(initrc_t)

corecmd_exec_all_executables(initrc_t)

corenet_all_recvfrom_unlabeled(initrc_t)
corenet_all_recvfrom_netlabel(initrc_t)
corenet_tcp_sendrecv_all_if(initrc_t)
corenet_udp_sendrecv_all_if(initrc_t)
corenet_tcp_sendrecv_all_nodes(initrc_t)
corenet_udp_sendrecv_all_nodes(initrc_t)
corenet_tcp_sendrecv_all_ports(initrc_t)
corenet_udp_sendrecv_all_ports(initrc_t)
corenet_tcp_connect_all_ports(initrc_t)
corenet_sendrecv_all_client_packets(initrc_t)

dev_read_rand(initrc_t)
dev_read_urand(initrc_t)
dev_write_rand(initrc_t)
dev_write_urand(initrc_t)
dev_rw_sysfs(initrc_t)
dev_list_usbfs(initrc_t)
dev_read_framebuffer(initrc_t)
dev_read_realtime_clock(initrc_t)
dev_read_sound_mixer(initrc_t)
dev_write_sound_mixer(initrc_t)
dev_setattr_all_chr_files(initrc_t)
dev_read_lvm_control(initrc_t)
dev_delete_lvm_control_dev(initrc_t)
dev_manage_generic_symlinks(initrc_t)
dev_manage_generic_files(initrc_t)
# Wants to remove udev.tbl:
dev_delete_generic_symlinks(initrc_t)

domain_kill_all_domains(initrc_t)
domain_signal_all_domains(initrc_t)
domain_signull_all_domains(initrc_t)
domain_sigstop_all_domains(initrc_t)
domain_sigstop_all_domains(initrc_t)
domain_sigchld_all_domains(initrc_t)
domain_read_all_domains_state(initrc_t)
domain_getattr_all_domains(initrc_t)
domain_dontaudit_ptrace_all_domains(initrc_t)
domain_getsession_all_domains(initrc_t)
domain_use_interactive_fds(initrc_t)
# for lsof which is used by alsa shutdown:
domain_dontaudit_getattr_all_udp_sockets(initrc_t)
domain_dontaudit_getattr_all_tcp_sockets(initrc_t)
domain_dontaudit_getattr_all_dgram_sockets(initrc_t)
domain_dontaudit_getattr_all_pipes(initrc_t)

files_getattr_all_dirs(initrc_t)
files_getattr_all_files(initrc_t)
files_getattr_all_symlinks(initrc_t)
files_getattr_all_pipes(initrc_t)
files_getattr_all_sockets(initrc_t)
files_purge_tmp(initrc_t)
files_delete_all_locks(initrc_t)
files_read_all_pids(initrc_t)
files_delete_all_pids(initrc_t)
files_delete_all_pid_dirs(initrc_t)
files_read_etc_files(initrc_t)
files_manage_etc_runtime_files(initrc_t)
files_etc_filetrans_etc_runtime(initrc_t, file)
files_manage_generic_locks(initrc_t)
files_exec_etc_files(initrc_t)
files_read_usr_files(initrc_t)
files_manage_urandom_seed(initrc_t)
files_manage_generic_spool(initrc_t)
# Mount and unmount file systems.
# cjp: not sure why these are here; should use mount policy
files_list_isid_type_dirs(initrc_t)
files_mounton_isid_type_dirs(initrc_t)
files_list_default(initrc_t)
files_mounton_default(initrc_t)

fs_register_binary_executable_type(initrc_t)
# rhgb-console writes to ramfs
fs_write_ramfs_pipes(initrc_t)
# cjp: not sure why these are here; should use mount policy
fs_mount_all_fs(initrc_t)
fs_unmount_all_fs(initrc_t)
fs_remount_all_fs(initrc_t)
fs_getattr_all_fs(initrc_t)

# initrc_t needs to do a pidof which requires ptrace
mcs_ptrace_all(initrc_t)
mcs_killall(initrc_t)
mcs_process_set_categories(initrc_t)

mls_file_read_all_levels(initrc_t)
mls_file_write_all_levels(initrc_t)
mls_process_read_up(initrc_t)
mls_process_write_down(initrc_t)
mls_rangetrans_source(initrc_t)
mls_fd_share_all_levels(initrc_t)

selinux_get_enforce_mode(initrc_t)

storage_getattr_fixed_disk_dev(initrc_t)
storage_setattr_fixed_disk_dev(initrc_t)
storage_setattr_removable_dev(initrc_t)

term_use_all_terms(initrc_t)
term_reset_tty_labels(initrc_t)

auth_rw_login_records(initrc_t)
auth_setattr_login_records(initrc_t)
auth_rw_lastlog(initrc_t)
auth_read_pam_pid(initrc_t)
auth_delete_pam_pid(initrc_t)
auth_delete_pam_console_data(initrc_t)
auth_use_nsswitch(initrc_t)

libs_rw_ld_so_cache(initrc_t)
libs_exec_lib_files(initrc_t)

logging_send_syslog_msg(initrc_t)
logging_manage_generic_logs(initrc_t)
logging_read_all_logs(initrc_t)
logging_append_all_logs(initrc_t)
logging_read_audit_config(initrc_t)

miscfiles_read_localization(initrc_t)
# slapd needs to read cert files from its initscript
miscfiles_read_certs(initrc_t)

modutils_read_module_config(initrc_t)
modutils_domtrans_insmod(initrc_t)

seutil_read_config(initrc_t)

userdom_read_user_home_content_files(initrc_t)
# Allow access to the sysadm TTYs. Note that this will give access to the 
# TTYs to any process in the initrc_t domain. Therefore, daemons and such
# started from init should be placed in their own domain.
userdom_use_user_terminals(initrc_t)

ifdef(`distro_debian',`
	dev_setattr_generic_dirs(initrc_t)

	fs_tmpfs_filetrans(initrc_t, initrc_var_run_t, dir)

	# for storing state under /dev/shm
	fs_setattr_tmpfs_dirs(initrc_t)
	storage_manage_fixed_disk(initrc_t)
	storage_tmpfs_filetrans_fixed_disk(initrc_t)

	files_setattr_etc_dirs(initrc_t)
')

ifdef(`distro_gentoo',`
	kernel_dontaudit_getattr_core_if(initrc_t)

	# seed udev /dev
	allow initrc_t self:process setfscreate;
	dev_create_null_dev(initrc_t)
	dev_create_zero_dev(initrc_t)
	dev_create_generic_dirs(initrc_t)
	term_create_console_dev(initrc_t)

	# unfortunately /sbin/rc does stupid tricks
	# with /dev/.rcboot to decide if we are in
	# early init
	dev_create_generic_dirs(initrc_t)
	dev_delete_generic_dirs(initrc_t)

	# openrc uses tmpfs for its state data
	fs_tmpfs_filetrans(initrc_t, initrc_state_t, { dir file fifo_file lnk_file })

	# init scripts touch this
	clock_dontaudit_write_adjtime(initrc_t)

	logging_send_audit_msgs(initrc_t)

	# for integrated run_init to read run_init_type.
	# happens during boot (/sbin/rc execs init scripts)
	seutil_read_default_contexts(initrc_t)

	# /lib/rcscripts/net/system.sh rewrites resolv.conf :(
	sysnet_create_config(initrc_t)
	sysnet_write_config(initrc_t)
	sysnet_setattr_config(initrc_t)	

	optional_policy(`
		arpwatch_manage_data_files(initrc_t)
	')

	optional_policy(`
		dhcpd_setattr_state_files(initrc_t)
	')
')

ifdef(`distro_redhat',`
	# this is from kmodule, which should get its own policy:
	allow initrc_t self:capability sys_admin;

	allow initrc_t self:process setfscreate;

	# Red Hat systems seem to have a stray
	# fd open from the initrd
	kernel_dontaudit_use_fds(initrc_t)
	files_dontaudit_read_root_files(initrc_t)

	selinux_set_enforce_mode(initrc_t)

	# These seem to be from the initrd
	# during device initialization:
	dev_create_generic_dirs(initrc_t)
	dev_rwx_zero(initrc_t)
	dev_rx_raw_memory(initrc_t)
	dev_wx_raw_memory(initrc_t)
	storage_raw_read_fixed_disk(initrc_t)
	storage_raw_write_fixed_disk(initrc_t)

	files_create_boot_flag(initrc_t)
	files_rw_boot_symlinks(initrc_t)
	# wants to read /.fonts directory
	files_read_default_files(initrc_t)
	files_mountpoint(initrc_tmp_t)
	# Needs to cp localtime to /var dirs
	files_write_var_dirs(initrc_t)

	fs_rw_tmpfs_chr_files(initrc_t)

	storage_manage_fixed_disk(initrc_t)
	storage_dev_filetrans_fixed_disk(initrc_t)
	storage_getattr_removable_dev(initrc_t)

	# readahead asks for these
	auth_dontaudit_read_shadow(initrc_t)

	# init scripts cp /etc/localtime over other directories localtime
	miscfiles_rw_localization(initrc_t)
	miscfiles_setattr_localization(initrc_t)
	miscfiles_relabel_localization(initrc_t)

	miscfiles_read_fonts(initrc_t)
	miscfiles_read_hwdata(initrc_t)

	optional_policy(`
		bind_manage_config_dirs(initrc_t)
		bind_write_config(initrc_t)
	')

	optional_policy(`
		#for /etc/rc.d/init.d/nfs to create /etc/exports
		rpc_write_exports(initrc_t)
	')

	optional_policy(`
		sysnet_rw_dhcp_config(initrc_t)
	')

	optional_policy(`
		xserver_delete_log(initrc_t)
	')
')

ifdef(`distro_suse',`
	optional_policy(`
		# set permissions on /tmp/.X11-unix
		xserver_setattr_xdm_tmp_dirs(initrc_t)
	')
')

optional_policy(`
	amavis_search_lib(initrc_t)
	amavis_setattr_pid_files(initrc_t)
')

optional_policy(`
	dev_rw_apm_bios(initrc_t)
')

optional_policy(`
	apache_read_config(initrc_t)
	apache_list_modules(initrc_t)
')

optional_policy(`
	bind_read_config(initrc_t)

	# for chmod in start script
	bind_setattr_pid_dirs(initrc_t)
')

optional_policy(`
	dev_read_usbfs(initrc_t)
	bluetooth_read_config(initrc_t)
')

optional_policy(`
	clamav_read_config(initrc_t)
')

optional_policy(`
	cpucontrol_stub(initrc_t)
	dev_getattr_cpu_dev(initrc_t)
')

optional_policy(`
	dev_getattr_printer_dev(initrc_t)

	cups_read_log(initrc_t)
	cups_read_rw_config(initrc_t)
#cups init script clears error log
	cups_write_log(initrc_t)
')

optional_policy(`
	daemontools_manage_svc(initrc_t)
')

optional_policy(`
	dbus_connect_system_bus(initrc_t)
	dbus_system_bus_client(initrc_t)
	dbus_read_config(initrc_t)

	optional_policy(`
		networkmanager_dbus_chat(initrc_t)
	')
')

optional_policy(`
	# /var/run/dovecot/login/ssl-parameters.dat is a hard link to
	# /var/lib/dovecot/ssl-parameters.dat and init tries to clean up
	# the directory. But we do not want to allow this.
	# The master process of dovecot will manage this file.
	dovecot_dontaudit_unlink_lib_files(initrc_t)
')

optional_policy(`
	ftp_read_config(initrc_t)
')

optional_policy(`
	gpm_setattr_gpmctl(initrc_t)
')

optional_policy(`
	dev_read_usbfs(initrc_t)

	# init scripts run /etc/hotplug/usb.rc
	hotplug_read_config(initrc_t)

	modutils_read_module_deps(initrc_t)
')

optional_policy(`
	inn_exec_config(initrc_t)
')

optional_policy(`
	ipsec_read_config(initrc_t)
	ipsec_manage_pid(initrc_t)
')

optional_policy(`
	kerberos_use(initrc_t)
')

optional_policy(`
	ldap_read_config(initrc_t)
	ldap_list_db(initrc_t)
')

optional_policy(`
	loadkeys_exec(initrc_t)
')

optional_policy(`
	# in emergency/recovery situations use sulogin
	locallogin_domtrans_sulogin(initrc_t)
')

optional_policy(`
	# This is needed to permit chown to read /var/spool/lpd/lp.
	# This is opens up security more than necessary; this means that ANYTHING
	# running in the initrc_t domain can read the printer spool directory.
	# Perhaps executing /etc/rc.d/init.d/lpd should transition
	# to domain lpd_t, instead of waiting for executing lpd.
	lpd_list_spool(initrc_t)

	lpd_read_config(initrc_t)
')

optional_policy(`
	#allow initrc_t lvm_control_t:chr_file unlink;

	dev_read_lvm_control(initrc_t)
	dev_create_generic_chr_files(initrc_t)

	lvm_read_config(initrc_t)
')

optional_policy(`
	mailman_list_data(initrc_t)
	mailman_read_data_symlinks(initrc_t)
')

optional_policy(`
	mta_read_config(initrc_t)
	mta_dontaudit_read_spool_symlinks(initrc_t)
')
# cjp: require doesnt work in the else of optionals :\
# this also would result in a type transition
# conflict if sendmail is enabled
#optional_policy(`',`
#	mta_send_mail(initrc_t)
#')

optional_policy(`
	ifdef(`distro_redhat',`
		mysql_manage_db_dirs(initrc_t)
	')

	mysql_stream_connect(initrc_t)
	mysql_write_log(initrc_t)
')

optional_policy(`
	nis_list_var_yp(initrc_t)
')

optional_policy(`
	openvpn_read_config(initrc_t)
')

optional_policy(`
	postgresql_manage_db(initrc_t)
	postgresql_read_config(initrc_t)
')

optional_policy(`
	postfix_list_spool(initrc_t)
')

optional_policy(`
	puppet_rw_tmp(initrc_t)
')

optional_policy(`
	quota_manage_flags(initrc_t)
')

optional_policy(`
	raid_manage_mdadm_pid(initrc_t)
')

optional_policy(`
	corecmd_shell_entry_type(initrc_t)
	fs_write_ramfs_sockets(initrc_t)
	fs_search_ramfs(initrc_t)

	rhgb_rw_stream_sockets(initrc_t)
	rhgb_stream_connect(initrc_t)
')

optional_policy(`
	rpc_read_exports(initrc_t)
')

optional_policy(`
	# bash tries to access a block device in the initrd
	kernel_dontaudit_getattr_unlabeled_blk_files(initrc_t)

	# for a bug in rm
	files_dontaudit_write_all_pids(initrc_t)

	# bash tries ioctl for some reason
	files_dontaudit_ioctl_all_pids(initrc_t)

	# why is this needed:
	rpm_manage_db(initrc_t)
')

optional_policy(`
	samba_rw_config(initrc_t)
	samba_read_winbind_pid(initrc_t)
')

optional_policy(`
	squid_read_config(initrc_t)
	squid_manage_logs(initrc_t)
')

optional_policy(`
	# allow init scripts to su
	su_restricted_domain_template(initrc, initrc_t, system_r)
')

optional_policy(`
	ssh_dontaudit_read_server_keys(initrc_t)
')

optional_policy(`
	sysnet_read_dhcpc_state(initrc_t)
')

optional_policy(`
	udev_rw_db(initrc_t)
')

optional_policy(`
	uml_setattr_util_sockets(initrc_t)
')

optional_policy(`
	unconfined_domain(initrc_t)

	ifdef(`distro_redhat',`
		# system-config-services causes avc messages that should be dontaudited
		unconfined_dontaudit_rw_pipes(daemon)
	')

	optional_policy(`
		mono_domtrans(initrc_t)
	')
')

optional_policy(`
	vmware_read_system_config(initrc_t)
	vmware_append_system_config(initrc_t)
')

optional_policy(`
	miscfiles_manage_fonts(initrc_t)

	# cjp: is this really needed?
	xfs_read_sockets(initrc_t)
')

optional_policy(`
	# Set device ownerships/modes.
	xserver_setattr_console_pipes(initrc_t)

	# init script wants to check if it needs to update windowmanagerlist
	xserver_read_xdm_rw_config(initrc_t)
')

optional_policy(`
	zebra_read_config(initrc_t)
')