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

policy_module(init,1.1.3)

gen_require(`
	class passwd rootok;
')

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

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

#
# init_t is the domain of the init process.
#
# real declaration moved to mls until
# range_transition works in loadable modules
gen_require(`
	type init_t;
')
domain_type(init_t)
role system_r types init_t;

#
# init_exec_t is the type of the init program.
#
# real declaration moved to mls until
# range_transition works in loadable modules
gen_require(`
	type init_exec_t;
')
kernel_userland_entry(init_t,init_exec_t)
domain_entry_file(init_t,init_exec_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)

# real declaration moved to mls until
# range_transition works in loadable modules
gen_require(`
	type initrc_t;
')
domain_type(initrc_t)
role system_r types initrc_t;

# real declaration moved to mls until
# range_transition works in loadable modules
gen_require(`
	type initrc_exec_t;
')
domain_entry_file(initrc_t,initrc_exec_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)

########################################
#
# 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_file_perms;

# Re-exec itself
allow init_t init_exec_t:file { getattr read ioctl execute execute_no_trans };

allow init_t initrc_t:unix_stream_socket connectto;

# For /var/run/shutdown.pid.
allow init_t init_var_run_t:file { create getattr read append write setattr unlink };
files_filetrans_pid(init_t,init_var_run_t)

allow init_t initctl_t:fifo_file { create getattr read append write setattr unlink };
fs_associate_tmpfs(initctl_t)
dev_filetrans_dev_node(init_t,initctl_t,fifo_file)

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

# Run init scripts.
domain_auto_trans(init_t,initrc_exec_t,initrc_t)

kernel_read_system_state(init_t)
kernel_share_state(init_t)
kernel_sigchld_from(init_t)
# If you load a new policy that removes active domains, processes can
# get stuck if you do not allow unlabeled processes to signal init.
# If you load an incompatible policy, you should probably reboot,
# since you may have compromised system security.
kernel_sigchld_from_unlabeled(init_t)

dev_read_sysfs(init_t)

mls_process_write_down(init_t)

selinux_set_boolean(init_t)

term_use_all_terms(init_t)

corecmd_exec_chroot(init_t)
corecmd_exec_bin(init_t)
corecmd_exec_sbin(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_dir(init_t)
files_manage_etc_runtime_files(init_t)
# Run /etc/X11/prefdm:
files_exec_etc_files(init_t)
# file descriptors inherited from the rootfs:
files_dontaudit_rw_root_file(init_t)
files_dontaudit_rw_root_chr_dev(init_t)

libs_use_ld_so(init_t)
libs_use_shared_libs(init_t)
libs_rw_ld_so_cache(init_t)

logging_send_syslog_msg(init_t)
logging_rw_generic_logs(init_t)

mls_file_read_up(init_t)
mls_file_write_down(init_t)
mls_rangetrans_target(init_t)

seutil_read_config(init_t)

miscfiles_read_localization(init_t)

ifdef(`distro_redhat',`
	fs_use_tmpfs_chr_dev(init_t)
	fs_filetrans_tmpfs(init_t,initctl_t,fifo_file)
')

ifdef(`targeted_policy',`
	unconfined_domain_template(init_t)
')

optional_policy(`authlogin',`
	auth_rw_login_records(init_t)
')

optional_policy(`nscd',`
	nscd_use_socket(init_t)
')

optional_policy(`portmap',`
	portmap_udp_sendto(init_t)
')

# Run the shell in the sysadm_t domain for single-user mode.
optional_policy(`userdomain',`
	userdom_shell_domtrans_sysadm(init_t)
')

ifdef(`TODO',`
allow init_t ramfs_t:sock_file write;
')

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

allow initrc_t self:process { getpgid setsched setpgid setrlimit getsched };
allow initrc_t self:capability ~{ sys_admin sys_module };
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 self:netlink_route_socket r_netlink_socket_perms;

allow initrc_t init_t:fd use;

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

can_exec(initrc_t,initrc_exec_t)

allow initrc_t initrc_state_t:dir create_dir_perms;
allow initrc_t initrc_state_t:file create_file_perms;
allow initrc_t initrc_state_t:lnk_file { create read getattr setattr unlink rename };

allow initrc_t initrc_var_run_t:file create_file_perms;
files_filetrans_pid(initrc_t,initrc_var_run_t)

can_exec(initrc_t,initrc_tmp_t)
allow initrc_t initrc_tmp_t:file create_file_perms;
allow initrc_t initrc_tmp_t:dir create_dir_perms;
files_filetrans_tmp(initrc_t,initrc_tmp_t, { file dir })

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_sysctl(initrc_t)
kernel_rw_all_sysctl(initrc_t)
# for lsof which is used by alsa shutdown:
kernel_dontaudit_getattr_message_if(initrc_t)

bootloader_read_kernel_symbol_table(initrc_t)

corenet_tcp_sendrecv_all_if(initrc_t)
corenet_raw_sendrecv_all_if(initrc_t)
corenet_udp_sendrecv_all_if(initrc_t)
corenet_tcp_sendrecv_all_nodes(initrc_t)
corenet_raw_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_non_ipsec_sendrecv(initrc_t)
corenet_tcp_bind_all_nodes(initrc_t)
corenet_udp_bind_all_nodes(initrc_t)
corenet_tcp_connect_all_ports(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_snd_mixer_dev(initrc_t)
dev_write_snd_mixer_dev(initrc_t)
dev_setattr_all_chr_files(initrc_t)
dev_read_lvm_control(initrc_t)
dev_delete_lvm_control(initrc_t)
dev_manage_generic_symlinks(initrc_t)
# Wants to remove udev.tbl:
dev_del_generic_symlinks(initrc_t)

fs_register_binary_executable_type(initrc_t)
# rhgb-console writes to ramfs
fs_write_ramfs_pipe(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)

selinux_get_enforce_mode(initrc_t)

storage_getattr_fixed_disk(initrc_t)
storage_setattr_fixed_disk(initrc_t)
storage_setattr_removable_device(initrc_t)

term_use_all_terms(initrc_t)
term_reset_tty_labels(initrc_t)

auth_rw_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)

corecmd_exec_bin(initrc_t)
corecmd_exec_sbin(initrc_t)
corecmd_exec_shell(initrc_t)
corecmd_exec_ls(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_wide_inherit_fd(initrc_t)
domain_exec_all_entry_files(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_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_spools(initrc_t)
# Mount and unmount file systems.
# cjp: not sure why these are here; should use mount policy
files_list_isid_type_dir(initrc_t)
files_mounton_isid_type_dir(initrc_t)
files_list_default(initrc_t)
files_mounton_default(initrc_t)

libs_rw_ld_so_cache(initrc_t)
libs_use_ld_so(initrc_t)
libs_use_shared_libs(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_auditd_config(initrc_t)

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

mls_file_read_up(initrc_t)
mls_file_write_down(initrc_t)
mls_process_read_up(initrc_t)
mls_process_write_down(initrc_t)
mls_rangetrans_source(initrc_t)

modutils_read_module_conf(initrc_t)
modutils_domtrans_insmod(initrc_t)

seutil_read_config(initrc_t)

sysnet_read_config(initrc_t)

udev_rw_db(initrc_t)

userdom_read_all_user_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_sysadm_terms(initrc_t)

ifdef(`distro_debian', `
	dev_setattr_dev_dir(initrc_t)

	fs_filetrans_tmpfs(initrc_t,initrc_var_run_t,dir)

	# for storing state under /dev/shm
	fs_setattr_tmpfs_dir(initrc_t)
	storage_create_fixed_disk_tmpfs(initrc_t)

	files_setattr_etc_dir(initrc_t)
')

ifdef(`distro_gentoo',`
	optional_policy(`arpwatch',`
		arpwatch_manage_data_files(initrc_t)
	')

	optional_policy(`dhcp',`
		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;

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

	selinux_set_enforce_mode(initrc_t)

	# Create and read /boot/kernel.h and /boot/System.map.
	# Redhat systems typically create this file at boot time.
	bootloader_create_runtime_file(initrc_t)
	bootloader_rw_boot_symlinks(initrc_t)

	# These seem to be from the initrd
	# during device initialization:
	dev_create_dir(initrc_t)
	dev_rwx_zero_dev(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)

	fs_use_tmpfs_chr_dev(initrc_t)

	storage_create_fixed_disk(initrc_t)
	storage_getattr_removable_device(initrc_t)

	files_create_boot_flag(initrc_t)
	files_getattr_all_file_type_sockets(initrc_t)
	# wants to read /.fonts directory
	files_read_default_files(initrc_t)
	files_mountpoint(initrc_tmp_t)

	miscfiles_read_fonts(initrc_t)
	miscfiles_read_hwdata(initrc_t)

	# readahead asks for these
	auth_dontaudit_read_shadow(initrc_t)

	optional_policy(`bind',`
		bind_manage_config_dir(initrc_t)
	')

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

ifdef(`targeted_policy',`
	domain_subj_id_change_exempt(initrc_t)
	unconfined_domain_template(initrc_t)
',`
	# cjp: require doesnt work in optionals :\
	# this also would result in a type transition
	# conflict if sendmail is enabled
#	optional_policy(`sendmail',`',`
#		mta_send_mail(initrc_t)
#	')
')

optional_policy(`apm',`
	dev_rw_apm_bios(initrc_t)
')

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

optional_policy(`automount',`
	automount_exec_config(initrc_t)
')

optional_policy(`bind',`
	bind_read_config(initrc_t)

	# for chmod in start script
	bind_setattr_pid_dir(initrc_t)

	# for /etc/rndc.key
	ifdef(`distro_redhat',`
		# Allow init script to cp localtime to named_conf_t
		bind_write_config(initrc_t)
	')
')

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

optional_policy(`cpucontrol',`
	cpucontrol_stub(initrc_t)
	dev_getattr_cpu(initrc_t)
')

optional_policy(`cups',`
	cups_read_log(initrc_t)
')

optional_policy(`dbus',`
	dbus_connect_system_bus(initrc_t)
	dbus_send_system_bus_msg(initrc_t)
	dbus_system_bus_client_template(initrc,initrc_t)
	dbus_read_config(initrc_t)

	optional_policy(`networkmanager',`
		networkmanager_dbus_chat(initrc_t)
	')
')

optional_policy(`ftp',`
	ftp_read_config(initrc_t)
')

optional_policy(`gpm',`
	gpm_setattr_gpmctl(initrc_t)
')

optional_policy(`hotplug',`
	dev_read_usbfs(initrc_t)

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

	modutils_read_mods_deps(initrc_t)
')

optional_policy(`inn',`
	inn_exec_config(initrc_t)
')

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

optional_policy(`kerberos',`
	kerberos_use(initrc_t)
')

optional_policy(`ldap',`
	ldap_read_config(initrc_t)
	ldap_list_db_dir(initrc_t)
')

optional_policy(`loadkeys',`
	loadkeys_exec(initrc_t)
')

optional_policy(`lpd',`
	# 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(`lvm',`
	#allow initrc_t lvm_control_t:chr_file unlink;

	dev_read_lvm_control(initrc_t)
	dev_create_generic_chr_file(initrc_t)

	lvm_read_config(initrc_t)
')

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

optional_policy(`mta',`
	mta_read_config(initrc_t)
	mta_dontaudit_read_spool_symlink(initrc_t)
')

optional_policy(`mysql',`
	ifdef(`distro_redhat',`
		mysql_manage_db_dir(initrc_t)
	')

	mysql_stream_connect(initrc_t)
	mysql_write_log(initrc_t)
')

optional_policy(`nis',`
	nis_use_ypbind(initrc_t)
	nis_udp_sendto_ypbind(initrc_t)
	nis_list_var_yp(initrc_t)
')

optional_policy(`nscd',`
	nscd_use_socket(initrc_t)
')

optional_policy(`raid',`
	raid_manage_mdadm_pid(initrc_t)
')

optional_policy(`rpc',`
	rpc_read_exports(initrc_t)
')

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

optional_policy(`postfix',`
	postfix_list_spool(initrc_t)
')

optional_policy(`quota',`
	quota_manage_flags(initrc_t)
')

optional_policy(`rhgb',`
	corecmd_shell_entry_type(initrc_t)
')

optional_policy(`rpm',`
	# bash tries to access a block device in the initrd
	kernel_dontaudit_getattr_unlabeled_blk_dev(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',`
	samba_rw_config(initrc_t)
	samba_read_winbind_pid(initrc_t)
')

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

optional_policy(`ssh',`
	ssh_dontaudit_read_server_keys(initrc_t)
')

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

optional_policy(`sysnetwork',`
	ifdef(`distro_redhat',`
		sysnet_rw_dhcp_config(initrc_t)
	')

	sysnet_read_dhcpc_state(initrc_t)
')

optional_policy(`xfs',`
	miscfiles_manage_fonts(initrc_t)

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

optional_policy(`zebra',`
	zebra_read_config(initrc_t)
')

ifdef(`TODO',`
# Set device ownerships/modes.
allow initrc_t xconsole_device_t:fifo_file setattr;

# during boot up initrc needs to do the following
allow initrc_t default_t:dir write;

ifdef(`distro_redhat', `
	allow initrc_t device_t:dir create;

	ifdef(`xserver.te', `
	# wants to cleanup xserver log dir
	allow initrc_t xserver_log_t:dir rw_dir_perms;
	allow initrc_t xserver_log_t:file unlink;
	')

')
') dnl end TODO