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

policy_module(selinuxutil, 1.22.1)

gen_require(`
	bool secure_mode;
')

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

attribute can_write_binary_policy;
attribute can_relabelto_binary_policy;

attribute_role newrole_roles;

attribute_role run_init_roles;
role system_r types run_init_t;

attribute_role semanage_roles;
roleattribute system_r semanage_roles;

#
# selinux_config_t is the type applied to
# /etc/selinux/config
#
# cjp: this is out of order due to rules
# in the domain_type interface
# (fix dup decl)
type selinux_config_t;
files_security_file(selinux_config_t)

type checkpolicy_t, can_write_binary_policy;
type checkpolicy_exec_t;
application_domain(checkpolicy_t, checkpolicy_exec_t)
role system_r types checkpolicy_t;

#
# default_context_t is the type applied to
# /etc/selinux/*/contexts/*
#
type default_context_t;
files_security_file(default_context_t)

#
# file_context_t is the type applied to
# /etc/selinux/*/contexts/files
#
type file_context_t;
files_security_file(file_context_t)

type load_policy_t;
type load_policy_exec_t;
application_domain(load_policy_t, load_policy_exec_t)
role system_r types load_policy_t;

type newrole_t;
type newrole_exec_t;
application_domain(newrole_t, newrole_exec_t)
domain_role_change_exemption(newrole_t)
domain_obj_id_change_exemption(newrole_t)
domain_interactive_fd(newrole_t)
role newrole_roles types newrole_t;

#
# policy_config_t is the type of /etc/security/selinux/*
# the security server policy configuration.
#
type policy_config_t;
files_security_file(policy_config_t)

neverallow ~can_relabelto_binary_policy policy_config_t:file relabelto;
#neverallow ~can_write_binary_policy policy_config_t:file { write append };

#
# policy_src_t is the type of the policy source
# files.
#
type policy_src_t;
files_type(policy_src_t)

type restorecond_t;
type restorecond_exec_t;
init_daemon_domain(restorecond_t, restorecond_exec_t)
domain_obj_id_change_exemption(restorecond_t)
role system_r types restorecond_t;

type restorecond_unit_t;
init_unit_file(restorecond_unit_t)

type restorecond_var_run_t;
files_pid_file(restorecond_var_run_t)

type run_init_t;
type run_init_exec_t;
application_domain(run_init_t, run_init_exec_t)
domain_system_change_exemption(run_init_t)
role run_init_roles types run_init_t;

type semanage_t;
type semanage_exec_t;
application_domain(semanage_t, semanage_exec_t)
domain_interactive_fd(semanage_t)
role semanage_roles types semanage_t;

type semanage_store_t alias semanage_var_lib_t;
files_type(semanage_store_t)

type semanage_read_lock_t;
files_type(semanage_read_lock_t)

type semanage_tmp_t;
files_tmp_file(semanage_tmp_t)

type semanage_trans_lock_t;
files_type(semanage_trans_lock_t)

type setfiles_t alias restorecon_t, can_relabelto_binary_policy;
type setfiles_exec_t alias restorecon_exec_t;
init_system_domain(setfiles_t, setfiles_exec_t)
domain_obj_id_change_exemption(setfiles_t)

########################################
#
# Checkpolicy local policy
#

allow checkpolicy_t self:capability dac_override;

# able to create and modify binary policy files
manage_files_pattern(checkpolicy_t, policy_config_t, policy_config_t)

# allow test policies to be created in src directories
filetrans_add_pattern(checkpolicy_t, policy_src_t, policy_config_t, file)

# only allow read of policy source files
read_files_pattern(checkpolicy_t, policy_src_t, policy_src_t)
read_lnk_files_pattern(checkpolicy_t, policy_src_t, policy_src_t)
allow checkpolicy_t selinux_config_t:dir search_dir_perms;

domain_use_interactive_fds(checkpolicy_t)

files_list_usr(checkpolicy_t)
# directory search permissions for path to source and binary policy files
files_search_etc(checkpolicy_t)

fs_getattr_xattr_fs(checkpolicy_t)

term_use_console(checkpolicy_t)

init_use_fds(checkpolicy_t)
init_use_script_ptys(checkpolicy_t)

userdom_use_user_terminals(checkpolicy_t)
userdom_use_all_users_fds(checkpolicy_t)

ifdef(`distro_ubuntu',`
	optional_policy(`
		unconfined_domain(checkpolicy_t)
	')
')

########################################
#
# Load_policy local policy
#

allow load_policy_t self:capability dac_override;

# only allow read of policy config files
read_files_pattern(load_policy_t, { policy_src_t policy_config_t }, policy_config_t)

domain_use_interactive_fds(load_policy_t)

# for mcs.conf
files_read_etc_files(load_policy_t)
files_read_etc_runtime_files(load_policy_t)

fs_getattr_xattr_fs(load_policy_t)

mls_file_read_all_levels(load_policy_t)

selinux_load_policy(load_policy_t)
selinux_set_all_booleans(load_policy_t)

term_use_console(load_policy_t)
term_list_ptys(load_policy_t)

init_use_script_fds(load_policy_t)
init_use_script_ptys(load_policy_t)

miscfiles_read_localization(load_policy_t)

seutil_libselinux_linked(load_policy_t)

userdom_use_user_terminals(load_policy_t)
userdom_use_all_users_fds(load_policy_t)

ifdef(`distro_ubuntu',`
	optional_policy(`
		unconfined_domain(load_policy_t)
	')
')

ifdef(`hide_broken_symptoms',`
	# cjp: cover up stray file descriptors.
	dontaudit load_policy_t selinux_config_t:file write;

	optional_policy(`
		unconfined_dontaudit_read_pipes(load_policy_t)
	')
')

optional_policy(`
	portage_dontaudit_use_fds(load_policy_t)
')

########################################
#
# Newrole local policy
#

allow newrole_t self:capability { fowner setuid setgid dac_override };
allow newrole_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem execheap execstack };
allow newrole_t self:process setexec;
allow newrole_t self:fd use;
allow newrole_t self:fifo_file rw_fifo_file_perms;
allow newrole_t self:sock_file read_sock_file_perms;
allow newrole_t self:shm create_shm_perms;
allow newrole_t self:sem create_sem_perms;
allow newrole_t self:msgq create_msgq_perms;
allow newrole_t self:msg { send receive };
allow newrole_t self:unix_dgram_socket sendto;
allow newrole_t self:unix_stream_socket { create_stream_socket_perms connectto };
allow newrole_t self:netlink_audit_socket { create_netlink_socket_perms nlmsg_relay };

dontaudit newrole_t self:capability dac_read_search;

read_files_pattern(newrole_t, default_context_t, default_context_t)
read_lnk_files_pattern(newrole_t, default_context_t, default_context_t)

kernel_read_system_state(newrole_t)
kernel_read_kernel_sysctls(newrole_t)

corecmd_list_bin(newrole_t)
corecmd_read_bin_symlinks(newrole_t)

dev_read_urand(newrole_t)

domain_use_interactive_fds(newrole_t)
# for when the user types "exec newrole" at the command line:
domain_sigchld_interactive_fds(newrole_t)

files_read_etc_files(newrole_t)
files_read_var_files(newrole_t)
files_read_var_symlinks(newrole_t)

fs_getattr_xattr_fs(newrole_t)
fs_search_auto_mountpoints(newrole_t)

mls_file_read_all_levels(newrole_t)
mls_file_write_all_levels(newrole_t)
mls_file_upgrade(newrole_t)
mls_file_downgrade(newrole_t)
mls_process_set_level(newrole_t)
mls_fd_share_all_levels(newrole_t)

selinux_validate_context(newrole_t)
selinux_compute_access_vector(newrole_t)
selinux_compute_create_context(newrole_t)
selinux_compute_relabel_context(newrole_t)
selinux_compute_user_contexts(newrole_t)

term_use_all_ttys(newrole_t)
term_use_all_ptys(newrole_t)
term_relabel_all_ttys(newrole_t)
term_relabel_all_ptys(newrole_t)
term_getattr_unallocated_ttys(newrole_t)
term_dontaudit_use_unallocated_ttys(newrole_t)

auth_use_nsswitch(newrole_t)
auth_run_chk_passwd(newrole_t, newrole_roles)
auth_run_upd_passwd(newrole_t, newrole_roles)
auth_rw_faillog(newrole_t)

# Write to utmp.
init_rw_utmp(newrole_t)
init_use_fds(newrole_t)

logging_send_syslog_msg(newrole_t)

miscfiles_read_localization(newrole_t)

seutil_libselinux_linked(newrole_t)

# for some PAM modules and for cwd
userdom_dontaudit_search_user_home_content(newrole_t)
userdom_search_user_home_dirs(newrole_t)

ifdef(`distro_ubuntu',`
	optional_policy(`
		unconfined_domain(newrole_t)
	')
')

# if secure mode is enabled, then newrole
# can only transition to unprivileged users
if(secure_mode) {
	userdom_spec_domtrans_unpriv_users(newrole_t)
} else {
	userdom_spec_domtrans_all_users(newrole_t)
}

tunable_policy(`allow_polyinstantiation',`
	files_polyinstantiate_all(newrole_t)
')

########################################
#
# Restorecond local policy
#

allow restorecond_t self:capability { dac_override dac_read_search fowner };
allow restorecond_t self:fifo_file rw_fifo_file_perms;

allow restorecond_t restorecond_var_run_t:file manage_file_perms;
files_pid_filetrans(restorecond_t, restorecond_var_run_t, file)

kernel_use_fds(restorecond_t)
kernel_rw_pipes(restorecond_t)
kernel_read_system_state(restorecond_t)

fs_relabelfrom_noxattr_fs(restorecond_t)
fs_dontaudit_list_nfs(restorecond_t)
fs_getattr_all_xattr_fs(restorecond_t)
fs_list_inotifyfs(restorecond_t)

selinux_validate_context(restorecond_t)
selinux_compute_access_vector(restorecond_t)
selinux_compute_create_context(restorecond_t)
selinux_compute_relabel_context(restorecond_t)
selinux_compute_user_contexts(restorecond_t)

files_relabel_non_auth_files(restorecond_t )
files_read_non_auth_files(restorecond_t)
auth_use_nsswitch(restorecond_t)

locallogin_dontaudit_use_fds(restorecond_t)

logging_send_syslog_msg(restorecond_t)

miscfiles_read_localization(restorecond_t)

seutil_libselinux_linked(restorecond_t)

ifdef(`distro_ubuntu',`
	optional_policy(`
		unconfined_domain(restorecond_t)
	')
')

optional_policy(`
	rpm_use_script_fds(restorecond_t)
')

#################################
#
# Run_init local policy
#

allow run_init_roles system_r;

allow run_init_t self:process setexec;
allow run_init_t self:capability setuid;
allow run_init_t self:fifo_file rw_file_perms;
allow run_init_t self:netlink_audit_socket { create_netlink_socket_perms nlmsg_relay };

# often the administrator runs such programs from a directory that is owned
# by a different user or has restrictive SE permissions, do not want to audit
# the failed access to the current directory
dontaudit run_init_t self:capability { dac_override dac_read_search };

corecmd_exec_bin(run_init_t)
corecmd_exec_shell(run_init_t)

dev_dontaudit_list_all_dev_nodes(run_init_t)

domain_use_interactive_fds(run_init_t)

files_read_etc_files(run_init_t)
files_dontaudit_search_all_dirs(run_init_t)

fs_getattr_xattr_fs(run_init_t)

mls_rangetrans_source(run_init_t)

selinux_validate_context(run_init_t)
selinux_compute_access_vector(run_init_t)
selinux_compute_create_context(run_init_t)
selinux_compute_relabel_context(run_init_t)
selinux_compute_user_contexts(run_init_t)

auth_use_nsswitch(run_init_t)
auth_run_chk_passwd(run_init_t, run_init_roles)
auth_run_upd_passwd(run_init_t, run_init_roles)
auth_dontaudit_read_shadow(run_init_t)

init_spec_domtrans_script(run_init_t)
# for utmp
init_rw_utmp(run_init_t)

logging_send_syslog_msg(run_init_t)

miscfiles_read_localization(run_init_t)

seutil_libselinux_linked(run_init_t)
seutil_read_default_contexts(run_init_t)

userdom_use_user_terminals(run_init_t)

ifndef(`direct_sysadm_daemon',`
	ifdef(`distro_gentoo',`
		# Gentoo integrated run_init:
		# Bug 554514
		init_read_all_script_files(run_init_t)	
		init_script_file_entry_type(run_init_t)

		init_exec_rc(run_init_t)
	')
')

ifdef(`distro_ubuntu',`
	optional_policy(`
		unconfined_domain(run_init_t)
	')
')

optional_policy(`
	daemontools_domtrans_start(run_init_t)
')

########################################
#
# semodule local policy
#

allow semanage_t self:capability { dac_override audit_write };
allow semanage_t self:unix_stream_socket create_stream_socket_perms;
allow semanage_t self:unix_dgram_socket create_socket_perms;
allow semanage_t self:netlink_audit_socket { create_netlink_socket_perms nlmsg_relay };
allow semanage_t self:fifo_file rw_fifo_file_perms;

allow semanage_t policy_config_t:file rw_file_perms;

filetrans_pattern(semanage_t, selinux_config_t, semanage_store_t, dir, "modules")

allow semanage_t semanage_tmp_t:dir manage_dir_perms;
allow semanage_t semanage_tmp_t:file manage_file_perms;
files_tmp_filetrans(semanage_t, semanage_tmp_t, { file dir })

kernel_read_system_state(semanage_t)
kernel_read_kernel_sysctls(semanage_t)

corecmd_exec_bin(semanage_t)

dev_read_urand(semanage_t)

domain_use_interactive_fds(semanage_t)

files_read_etc_files(semanage_t)
files_read_etc_runtime_files(semanage_t)
files_read_usr_files(semanage_t)
files_list_pids(semanage_t)

mls_file_write_all_levels(semanage_t)
mls_file_read_all_levels(semanage_t)

selinux_validate_context(semanage_t)
selinux_get_enforce_mode(semanage_t)
selinux_getattr_fs(semanage_t)
# for setsebool:
selinux_set_all_booleans(semanage_t)

term_use_all_terms(semanage_t)

# Running genhomedircon requires this for finding all users
auth_use_nsswitch(semanage_t)

locallogin_use_fds(semanage_t)

logging_send_syslog_msg(semanage_t)

miscfiles_read_localization(semanage_t)

seutil_libselinux_linked(semanage_t)
seutil_manage_file_contexts(semanage_t)
seutil_manage_config(semanage_t)
seutil_run_setfiles(semanage_t, semanage_roles)
seutil_run_loadpolicy(semanage_t, semanage_roles)
seutil_manage_bin_policy(semanage_t)
seutil_use_newrole_fds(semanage_t)
seutil_manage_module_store(semanage_t)
seutil_get_semanage_trans_lock(semanage_t)
seutil_get_semanage_read_lock(semanage_t)
# netfilter_contexts:
seutil_manage_default_contexts(semanage_t)

# Handle pp files created in homedir and /tmp
userdom_read_user_home_content_files(semanage_t)
userdom_read_user_tmp_files(semanage_t)

ifdef(`distro_debian',`
	files_read_var_lib_files(semanage_t)
	files_read_var_lib_symlinks(semanage_t)
')

ifdef(`distro_ubuntu',`
	optional_policy(`
		unconfined_domain(semanage_t)
	')
')

optional_policy(`
	portage_eselect_module(semanage_t)
')

########################################
#
# Setfiles local policy
#

allow setfiles_t self:capability { dac_override dac_read_search fowner };
dontaudit setfiles_t self:capability sys_tty_config;
allow setfiles_t self:fifo_file rw_file_perms;

allow setfiles_t { policy_src_t policy_config_t file_context_t default_context_t }:dir list_dir_perms;
allow setfiles_t { policy_src_t policy_config_t file_context_t default_context_t }:file read_file_perms;
allow setfiles_t { policy_src_t policy_config_t file_context_t default_context_t }:lnk_file { read_lnk_file_perms ioctl lock };

kernel_read_system_state(setfiles_t)
kernel_relabelfrom_unlabeled_dirs(setfiles_t)
kernel_relabelfrom_unlabeled_files(setfiles_t)
kernel_relabelfrom_unlabeled_symlinks(setfiles_t)
kernel_relabelfrom_unlabeled_pipes(setfiles_t)
kernel_relabelfrom_unlabeled_sockets(setfiles_t)
kernel_use_fds(setfiles_t)
kernel_rw_pipes(setfiles_t)
kernel_rw_unix_dgram_sockets(setfiles_t)
kernel_dontaudit_list_all_proc(setfiles_t)
kernel_dontaudit_list_all_sysctls(setfiles_t)

dev_relabel_all_dev_nodes(setfiles_t)
# to handle when /dev/console needs to be relabeled
dev_rw_generic_chr_files(setfiles_t)

domain_use_interactive_fds(setfiles_t)
domain_dontaudit_search_all_domains_state(setfiles_t)

files_read_etc_runtime_files(setfiles_t)
files_read_etc_files(setfiles_t)
files_list_all(setfiles_t)
files_relabel_all_files(setfiles_t)
files_read_usr_symlinks(setfiles_t)
files_dontaudit_read_all_symlinks(setfiles_t)

fs_getattr_all_xattr_fs(setfiles_t)
fs_list_all(setfiles_t)
fs_search_auto_mountpoints(setfiles_t)
fs_relabelfrom_noxattr_fs(setfiles_t)

mls_file_read_all_levels(setfiles_t)
mls_file_write_all_levels(setfiles_t)
mls_file_upgrade(setfiles_t)
mls_file_downgrade(setfiles_t)

selinux_validate_context(setfiles_t)
selinux_compute_access_vector(setfiles_t)
selinux_compute_create_context(setfiles_t)
selinux_compute_relabel_context(setfiles_t)
selinux_compute_user_contexts(setfiles_t)

term_use_all_ttys(setfiles_t)
term_use_all_ptys(setfiles_t)
term_use_unallocated_ttys(setfiles_t)

# this is to satisfy the assertion:
auth_relabelto_shadow(setfiles_t)

init_use_fds(setfiles_t)
init_use_script_fds(setfiles_t)
init_use_script_ptys(setfiles_t)
init_exec_script_files(setfiles_t)

logging_send_audit_msgs(setfiles_t)
logging_send_syslog_msg(setfiles_t)

miscfiles_read_localization(setfiles_t)

seutil_libselinux_linked(setfiles_t)
seutil_read_module_store(setfiles_t)

userdom_use_all_users_fds(setfiles_t)
# for config files in a home directory
userdom_read_user_home_content_files(setfiles_t)

ifdef(`distro_debian',`
	# udev tmpfs is populated with static device nodes
	# and then relabeled afterwards; thus
	# /dev/console has the tmpfs type
	fs_rw_tmpfs_chr_files(setfiles_t)
')

ifdef(`distro_redhat', `
	fs_rw_tmpfs_chr_files(setfiles_t)
	fs_rw_tmpfs_blk_files(setfiles_t)
	fs_relabel_tmpfs_blk_file(setfiles_t)
	fs_relabel_tmpfs_chr_file(setfiles_t)
')

ifdef(`distro_ubuntu',`
	optional_policy(`
		unconfined_domain(setfiles_t)
	')
')

ifdef(`hide_broken_symptoms',`
	optional_policy(`
		udev_dontaudit_rw_dgram_sockets(setfiles_t)
	')

	# cjp: cover up stray file descriptors.
	optional_policy(`
		unconfined_dontaudit_read_pipes(setfiles_t)
		unconfined_dontaudit_rw_tcp_sockets(setfiles_t)
	')
')

optional_policy(`
	hotplug_use_fds(setfiles_t)
')

ifdef(`distro_gentoo',`
	###########################################
	#
	# setfiles local policy
	#
	gen_require(`
		class passwd { passwd chfn chsh rootok };
	')

	# Needed to support pam_rootok.so even with integrated run_init support in openrc
	allow run_init_t self:passwd { passwd rootok };

	# Fix bug #512676
	allow run_init_t self:process signal;
	allow run_init_t self:netlink_selinux_socket { create bind };

	# Needed to support openrc with USE="-pam"
	# TODO can we make this optional? is this a bad thing?
	auth_read_shadow(run_init_t)

	# Denials upon loading policy
	fs_getattr_tmpfs(setfiles_t)
	dev_getattr_fs(setfiles_t)
	term_getattr_pty_fs(setfiles_t)

	files_read_all_symlinks(setfiles_t)

	########################################
	#
	# restorecond local policy
	#

	# Moved out of files_relabel_non_auth_files as it cannot be used in tunable_policy otherwise
	seutil_relabelto_bin_policy(restorecond_t)

	##########################################
	#
	# semanage local policy
	#

	# Fix bug #541990 - Grant setfscreate privilege to allow semanage_migrate_store to work properly
	allow semanage_t self:process { setfscreate };
')