selinux-policy/policy/modules/services/xserver.if

## <summary>X Windows Server</summary>

########################################
## <summary>
##	Rules required for using the X Windows server
##	and environment, for restricted users.
## </summary>
## <param name="role">
##	<summary>
##	Role allowed access.
##	</summary>
## </param>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_restricted_role',`
	gen_require(`
		type xserver_t, xserver_exec_t, xserver_tmp_t, xserver_tmpfs_t;
		type user_fonts_t, user_fonts_cache_t, user_fonts_config_t, xdm_tmp_t;
		type iceauth_t, iceauth_exec_t, iceauth_home_t;
		type xauth_t, xauth_exec_t, xauth_home_t;
		class dbus send_msg;
	')

	role $1 types { xserver_t xauth_t iceauth_t };

	# Xserver read/write client shm
	allow xserver_t $2:fd use;
	allow xserver_t $2:shm rw_shm_perms;

	domtrans_pattern($2, xserver_exec_t, xserver_t)
	allow xserver_t $2:process { getpgid signal };

	allow xserver_t $2:shm rw_shm_perms;

	allow $2 user_fonts_t:dir list_dir_perms;
	allow $2 user_fonts_t:file read_file_perms;
	allow $2 user_fonts_t:lnk_file read_lnk_file_perms;

	allow $2 user_fonts_config_t:dir list_dir_perms;
	allow $2 user_fonts_config_t:file read_file_perms;

	manage_dirs_pattern($2, user_fonts_cache_t, user_fonts_cache_t)
	manage_files_pattern($2, user_fonts_cache_t, user_fonts_cache_t)

	stream_connect_pattern($2, xserver_tmp_t, xserver_tmp_t, xserver_t)
	allow $2 xserver_tmp_t:sock_file unlink;
	files_search_tmp($2)

	# Communicate via System V shared memory.
	allow $2 xserver_t:shm r_shm_perms;
	allow $2 xserver_tmpfs_t:file read_file_perms;

	# allow ps to show iceauth
	ps_process_pattern($2, iceauth_t)

	domtrans_pattern($2, iceauth_exec_t, iceauth_t)

	allow $2 iceauth_home_t:file read_file_perms;

	domtrans_pattern($2, xauth_exec_t, xauth_t)

	allow $2 xauth_t:process signal;

	# allow ps to show xauth
	ps_process_pattern($2, xauth_t)
	allow $2 xserver_t:process signal;

	allow $2 xauth_home_t:file read_file_perms;

	# for when /tmp/.X11-unix is created by the system
	allow $2 xdm_t:fd use;
	allow $2 xdm_t:fifo_file { getattr read write ioctl };
	allow $2 xdm_tmp_t:dir search_dir_perms;
	allow $2 xdm_tmp_t:sock_file { read write };
	dontaudit $2 xdm_t:tcp_socket { read write };
	dontaudit $2 xdm_tmp_t:dir setattr;

	allow $2 xdm_t:dbus send_msg;
	allow xdm_t  $2:dbus send_msg;

	# Client read xserver shm
	allow $2 xserver_t:fd use;
	allow $2 xserver_tmpfs_t:file read_file_perms;

	# Read /tmp/.X0-lock
	allow $2 xserver_tmp_t:file { getattr read };

	dev_rw_xserver_misc($2)
	dev_rw_power_management($2)
	dev_read_input($2)
	dev_read_misc($2)
	dev_write_misc($2)
	# open office is looking for the following
	dev_getattr_agp_dev($2)

	# GNOME checks for usb and other devices:
	dev_rw_usbfs($2)

	miscfiles_read_fonts($2)
	miscfiles_setattr_fonts_cache_dirs($2)

	xserver_common_x_domain_template(user, $2)
	xserver_xsession_entry_type($2)
	xserver_dontaudit_write_log($2)
	xserver_stream_connect_xdm($2)
	# certain apps want to read xdm.pid file
	xserver_read_xdm_pid($2)
	# gnome-session creates socket under /tmp/.ICE-unix/
	xserver_create_xdm_tmp_sockets($2)
	# Needed for escd, remove if we get escd policy
	xserver_manage_xdm_tmp_files($2)

	ifdef(`hide_broken_symptoms',`
		dontaudit iceauth_t $2:socket_class_set { read write };
	')

	# Client write xserver shm
	tunable_policy(`allow_write_xshm',`
		allow $2 xserver_t:shm rw_shm_perms;
		allow $2 xserver_tmpfs_t:file rw_file_perms;
	')

	tunable_policy(`user_direct_dri',`
		dev_rw_dri($2)
	')
')

########################################
## <summary>
##	Rules required for using the X Windows server
##	and environment.
## </summary>
## <param name="role">
##	<summary>
##	Role allowed access.
##	</summary>
## </param>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_role',`
	gen_require(`
		type iceauth_home_t, xserver_t, xserver_tmpfs_t, xauth_home_t;
		type user_fonts_t, user_fonts_cache_t, user_fonts_config_t;
	')

	xserver_restricted_role($1, $2)

	# Communicate via System V shared memory.
	allow $2 xserver_t:shm rw_shm_perms;
	allow $2 xserver_tmpfs_t:file rw_file_perms;

	allow $2 iceauth_home_t:file manage_file_perms;
	allow $2 iceauth_home_t:file relabel_file_perms;

	allow $2 xauth_home_t:file manage_file_perms;
	allow $2 xauth_home_t:file relabel_file_perms;

	mls_xwin_read_to_clearance($2)
	manage_dirs_pattern($2, user_fonts_t, user_fonts_t)
	manage_files_pattern($2, user_fonts_t, user_fonts_t)
	allow $2 user_fonts_t:lnk_file read_lnk_file_perms;
	relabel_dirs_pattern($2, user_fonts_t, user_fonts_t)
	relabel_files_pattern($2, user_fonts_t, user_fonts_t)

	manage_dirs_pattern($2, user_fonts_cache_t, user_fonts_cache_t)
	manage_files_pattern($2, user_fonts_cache_t, user_fonts_cache_t)
	relabel_dirs_pattern($2, user_fonts_cache_t, user_fonts_cache_t)
	relabel_files_pattern($2, user_fonts_cache_t, user_fonts_cache_t)

	manage_dirs_pattern($2, user_fonts_config_t, user_fonts_config_t)
	manage_files_pattern($2, user_fonts_config_t, user_fonts_config_t)
	relabel_dirs_pattern($2, user_fonts_config_t, user_fonts_config_t)
	relabel_files_pattern($2, user_fonts_config_t, user_fonts_config_t)
')

#######################################
## <summary>
##	Create sessions on the X server, with read-only
##	access to the X server shared
##	memory segments.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
## <param name="tmpfs_type">
##	<summary>
##	The type of the domain SYSV tmpfs files.
##	</summary>
## </param>
#
interface(`xserver_ro_session',`
	gen_require(`
		type xserver_t, xserver_tmp_t, xserver_tmpfs_t;
	')

	# Xserver read/write client shm
	allow xserver_t $1:fd use;
	allow xserver_t $1:shm rw_shm_perms;
	allow xserver_t $2:file rw_file_perms;

	# Connect to xserver
	allow $1 xserver_t:unix_stream_socket connectto;
	allow $1 xserver_t:process signal;

	# Read /tmp/.X0-lock
	allow $1 xserver_tmp_t:file read_file_perms;

	# Client read xserver shm
	allow $1 xserver_t:fd use;
	allow $1 xserver_t:shm r_shm_perms;
	allow $1 xserver_tmpfs_t:file read_file_perms;
')

#######################################
## <summary>
##	Create sessions on the X server, with read and write
##	access to the X server shared
##	memory segments.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
## <param name="tmpfs_type">
##	<summary>
##	The type of the domain SYSV tmpfs files.
##	</summary>
## </param>
#
interface(`xserver_rw_session',`
	gen_require(`
		type xserver_t, xserver_tmpfs_t;
	')

	xserver_ro_session($1,$2)
	allow $1 xserver_t:shm rw_shm_perms;
	allow $1 xserver_tmpfs_t:file rw_file_perms;
')

#######################################
## <summary>
##	Create non-drawing client sessions on an X server.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_non_drawing_client',`
	gen_require(`
		class x_drawable { getattr get_property };
		class x_extension { query use };
		class x_gc { create setattr };
		class x_property read;

		type xserver_t, xdm_var_run_t;
		type xextension_t, xproperty_t, root_xdrawable_t;
	')

	allow $1 self:x_gc { create setattr };

	allow $1 xdm_var_run_t:dir search;
	allow $1 xserver_t:unix_stream_socket connectto;

	allow $1 xextension_t:x_extension { query use };
	allow $1 root_xdrawable_t:x_drawable { getattr get_property };
	allow $1 xproperty_t:x_property read;
')

#######################################
## <summary>
##	Create full client sessions
##	on a user X server.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
## <param name="tmpfs_type">
##	<summary>
##	The type of the domain SYSV tmpfs files.
##	</summary>
## </param>
#
interface(`xserver_user_client',`
	refpolicywarn(`$0() has been deprecated, please use xserver_user_x_domain_template instead.')
	gen_require(`
		type xdm_t, xdm_tmp_t;
		type xauth_home_t, iceauth_home_t, xserver_t, xserver_tmpfs_t;
	')

	allow $1 self:shm create_shm_perms;
	allow $1 self:unix_dgram_socket create_socket_perms;
	allow $1 self:unix_stream_socket { connectto create_stream_socket_perms };

	# Read .Xauthority file
	allow $1 xauth_home_t:file read_file_perms;
	allow $1 iceauth_home_t:file read_file_perms;

	# for when /tmp/.X11-unix is created by the system
	allow $1 xdm_t:fd use;
	allow $1 xdm_t:fifo_file rw_inherited_fifo_file_perms;
	allow $1 xdm_tmp_t:dir search;
	allow $1 xdm_tmp_t:sock_file { read write };
	dontaudit $1 xdm_t:tcp_socket { read write };

	# Allow connections to X server.
	files_search_tmp($1)

	miscfiles_read_fonts($1)

	userdom_search_user_home_dirs($1)
	# for .xsession-errors
	userdom_dontaudit_write_user_home_content_files($1)

	xserver_ro_session($1,$2)
	xserver_use_user_fonts($1)

	xserver_read_xdm_tmp_files($1)

	# Client write xserver shm
	tunable_policy(`allow_write_xshm',`
		allow $1 xserver_t:shm rw_shm_perms;
		allow $1 xserver_tmpfs_t:file rw_file_perms;
	')
')

#######################################
## <summary>
##	Interface to provide X object permissions on a given X server to
##	an X client domain.  Provides the minimal set required by a basic
##	X client application.
## </summary>
## <param name="prefix">
##	<summary>
##	The prefix of the X client domain (e.g., user
##	is the prefix for user_t).
##	</summary>
## </param>
## <param name="domain">
##	<summary>
##	Client domain allowed access.
##	</summary>
## </param>
#
template(`xserver_common_x_domain_template',`
	gen_require(`
		type root_xdrawable_t;
		type xproperty_t, $1_xproperty_t;
		type xevent_t, client_xevent_t;
		type input_xevent_t, $1_input_xevent_t;

		attribute x_domain;
		attribute xdrawable_type, xcolormap_type;
		attribute input_xevent_type;

		class x_drawable all_x_drawable_perms;
		class x_property all_x_property_perms;
		class x_event all_x_event_perms;
		class x_synthetic_event all_x_synthetic_event_perms;
		class x_client destroy;
		class x_server manage;
		class x_screen { saver_setattr saver_hide saver_show };
		class x_pointer { get_property set_property manage };
		class x_keyboard { read manage };
		type xdm_t, xserver_t;
	')

	##############################
	#
	# Local Policy
	#

	# Type attributes
	typeattribute $2 x_domain;
	typeattribute $2 xdrawable_type, xcolormap_type;

	# X Properties
	# disable property transitions for the time being.
#	type_transition $2 xproperty_t:x_property $1_xproperty_t;

	# X Windows
	# new windows have the domain type
	type_transition $2 root_xdrawable_t:x_drawable $2;

	# X Input
	# distinguish input events
	type_transition $2 input_xevent_t:x_event $1_input_xevent_t;
	# can send own events
	allow $2 $1_input_xevent_t:{ x_event x_synthetic_event } send;
	# can receive own events
	allow $2 $1_input_xevent_t:{ x_event x_synthetic_event } receive;
	# can receive default events
	allow $2 client_xevent_t:{ x_event x_synthetic_event } receive;
	allow $2 xevent_t:{ x_event x_synthetic_event } receive;
	# dont audit send failures
	dontaudit $2 input_xevent_type:x_event send;

	allow $2 xdm_t:x_drawable { hide read add_child manage };
	allow $2 xdm_t:x_client destroy;

	allow $2 root_xdrawable_t:x_drawable write;
	allow $2 xserver_t:x_server manage;
	allow $2 xserver_t:x_screen { saver_setattr saver_hide saver_show };
	allow $2 xserver_t:x_pointer { get_property set_property manage };
	allow $2 xserver_t:x_keyboard { read manage };
')

#######################################
## <summary>
##	Template for creating the set of types used
##	in an X windows domain.
## </summary>
## <param name="prefix">
##	<summary>
##	The prefix of the X client domain (e.g., user
##	is the prefix for user_t).
##	</summary>
## </param>
#
template(`xserver_object_types_template',`
	gen_require(`
		attribute xproperty_type, input_xevent_type, xevent_type;
	')

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

	# Types for properties
	type $1_xproperty_t, xproperty_type;
	ubac_constrained($1_xproperty_t)

	# Types for events
	type $1_input_xevent_t, input_xevent_type, xevent_type;
	ubac_constrained($1_input_xevent_t)
')

#######################################
## <summary>
##	Interface to provide X object permissions on a given X server to
##	an X client domain.  Provides the minimal set required by a basic
##	X client application.
## </summary>
## <param name="prefix">
##	<summary>
##	The prefix of the X client domain (e.g., user
##	is the prefix for user_t).
##	</summary>
## </param>
## <param name="domain">
##	<summary>
##	Client domain allowed access.
##	</summary>
## </param>
## <param name="tmpfs_type">
##	<summary>
##	The type of the domain SYSV tmpfs files.
##	</summary>
## </param>
#
template(`xserver_user_x_domain_template',`
	gen_require(`
		type xdm_t, xdm_tmp_t;
		type xauth_home_t, iceauth_home_t, xserver_t, xserver_tmpfs_t;
	')

	allow $2 self:shm create_shm_perms;
	allow $2 self:unix_dgram_socket create_socket_perms;
	allow $2 self:unix_stream_socket { connectto create_stream_socket_perms };

	# Read .Xauthority file
	allow $2 xauth_home_t:file read_file_perms;
	allow $2 iceauth_home_t:file read_file_perms;

	# for when /tmp/.X11-unix is created by the system
	allow $2 xdm_t:fd use;
	allow $2 xdm_t:fifo_file { getattr read write ioctl };
	allow $2 xdm_tmp_t:dir search_dir_perms;
	allow $2 xdm_tmp_t:sock_file { read write };
	dontaudit $2 xdm_t:tcp_socket { read write };

	# Allow connections to X server.
	files_search_tmp($2)

	miscfiles_read_fonts($2)

	userdom_search_user_home_dirs($2)
	# for .xsession-errors
	userdom_dontaudit_write_user_home_content_files($2)

	xserver_ro_session($2, $3)
	xserver_use_user_fonts($2)

	xserver_read_xdm_tmp_files($2)
	xserver_read_xdm_pid($2)

	# X object manager
	xserver_object_types_template($1)
	xserver_common_x_domain_template($1, $2)

	# Client write xserver shm
	tunable_policy(`allow_write_xshm',`
		allow $2 xserver_t:shm rw_shm_perms;
		allow $2 xserver_tmpfs_t:file rw_file_perms;
	')

	tunable_policy(`user_direct_dri',`
		dev_rw_dri($2)
	')
')

########################################
## <summary>
##	Read user fonts, user font configuration,
##	and manage the user font cache.
## </summary>
## <desc>
##	<p>
##	Read user fonts, user font configuration,
##	and manage the user font cache.
##	</p>
##	<p>
##	This is a templated interface, and should only
##	be called from a per-userdomain template.
##	</p>
## </desc>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_use_user_fonts',`
	gen_require(`
		type user_fonts_t, user_fonts_cache_t, user_fonts_config_t;
	')

	# Read per user fonts
	allow $1 user_fonts_t:dir list_dir_perms;
	allow $1 user_fonts_t:file read_file_perms;
	allow $1 user_fonts_t:lnk_file read_lnk_file_perms;

	# Manipulate the global font cache
	manage_dirs_pattern($1, user_fonts_cache_t, user_fonts_cache_t)
	manage_files_pattern($1, user_fonts_cache_t, user_fonts_cache_t)

	# Read per user font config
	allow $1 user_fonts_config_t:dir list_dir_perms;
	allow $1 user_fonts_config_t:file read_file_perms;

	userdom_search_user_home_dirs($1)
')

########################################
## <summary>
##	Transition to the Xauthority domain.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed to transition.
##	</summary>
## </param>
#
interface(`xserver_domtrans_xauth',`
	gen_require(`
		type xauth_t, xauth_exec_t;
	')

	domtrans_pattern($1, xauth_exec_t, xauth_t)

	ifdef(`hide_broken_symptoms',`
		dontaudit xauth_t $1:socket_class_set { read write };
	')
')

########################################
## <summary>
##	Dontaudit exec of Xauthority program.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_dontaudit_exec_xauth',`
	gen_require(`
		type xauth_exec_t;
	')

	dontaudit $1 xauth_exec_t:file execute;
')

########################################
## <summary>
##	Create a Xauthority file in the user home directory.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_user_home_dir_filetrans_user_xauth',`
	gen_require(`
		type xauth_home_t;
	')

	userdom_user_home_dir_filetrans($1, xauth_home_t, file)
')

########################################
## <summary>
##	Read all users fonts, user font configurations,
##	and manage all users font caches.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_use_all_users_fonts',`
	refpolicywarn(`$0() has been deprecated, please use xserver_use_user_fonts.')
	xserver_use_user_fonts($1)
')

########################################
## <summary>
##	Read all users .Xauthority.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_read_user_xauth',`
	gen_require(`
		type xauth_home_t;
	')

	allow $1 xauth_home_t:file read_file_perms;
	userdom_search_user_home_dirs($1)
	xserver_read_xdm_pid($1)
')

########################################
## <summary>
##	Set the attributes of the X windows console named pipes.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_setattr_console_pipes',`
	gen_require(`
		type xconsole_device_t;
	')

	allow $1 xconsole_device_t:fifo_file setattr;
')

########################################
## <summary>
##	Read and write the X windows console named pipe.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_rw_console',`
	gen_require(`
		type xconsole_device_t;
	')

	allow $1 xconsole_device_t:fifo_file rw_fifo_file_perms;
')

########################################
## <summary>
##	Use file descriptors for xdm.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_use_xdm_fds',`
	gen_require(`
		type xdm_t;
	')

	allow $1 xdm_t:fd use;
')

########################################
## <summary>
##	Do not audit attempts to inherit
##	XDM file descriptors.
## </summary>
## <param name="domain">
##	<summary>
##	Domain to not audit.
##	</summary>
## </param>
#
interface(`xserver_dontaudit_use_xdm_fds',`
	gen_require(`
		type xdm_t;
	')

	dontaudit $1 xdm_t:fd use;
')

########################################
## <summary>
##	Read and write XDM unnamed pipes.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_rw_xdm_pipes',`
	gen_require(`
		type xdm_t;
	')

	allow $1 xdm_t:fifo_file { getattr read write };
')

########################################
## <summary>
##	Do not audit attempts to read and write
##	XDM unnamed pipes.
## </summary>
## <param name="domain">
##	<summary>
##	Domain to not audit.
##	</summary>
## </param>
#
interface(`xserver_dontaudit_rw_xdm_pipes',`
	gen_require(`
		type xdm_t;
	')

	dontaudit $1 xdm_t:fifo_file rw_fifo_file_perms;
')

########################################
## <summary>
##	Connect to XDM over a unix domain
##	stream socket.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_stream_connect_xdm',`
	gen_require(`
		type xdm_t, xdm_tmp_t;
		type xdm_var_run_t;
	')

	files_search_tmp($1)
	files_search_pids($1)
	stream_connect_pattern($1, xdm_tmp_t, xdm_tmp_t, xdm_t)
	stream_connect_pattern($1, xdm_var_run_t, xdm_var_run_t, xdm_t)
')

########################################
## <summary>
##	Read xdm-writable configuration files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_read_xdm_rw_config',`
	gen_require(`
		type xdm_rw_etc_t;
	')

	files_search_etc($1)
	allow $1 xdm_rw_etc_t:file read_file_perms;
')

########################################
## <summary>
##	Set the attributes of XDM temporary directories.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_setattr_xdm_tmp_dirs',`
	gen_require(`
		type xdm_tmp_t;
	')

	allow $1 xdm_tmp_t:dir setattr;
')

########################################
## <summary>
##	Create a named socket in a XDM
##	temporary directory.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_create_xdm_tmp_sockets',`
	gen_require(`
		type xdm_tmp_t;
	')

	files_search_tmp($1)
	allow $1 xdm_tmp_t:dir list_dir_perms;
	create_sock_files_pattern($1, xdm_tmp_t, xdm_tmp_t)
')

########################################
## <summary>
##	Read XDM pid files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_read_xdm_pid',`
	gen_require(`
		type xdm_var_run_t;
	')

	files_search_pids($1)
	read_files_pattern($1, xdm_var_run_t, xdm_var_run_t)
')

########################################
## <summary>
##	Read XDM var lib files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_read_xdm_lib_files',`
	gen_require(`
		type xdm_var_lib_t;
	')

	allow $1 xdm_var_lib_t:file read_file_perms;
')

########################################
## <summary>
##	Make an X session script an entrypoint for the specified domain.
## </summary>
## <param name="domain">
##	<summary>
##	The domain for which the shell is an entrypoint.
##	</summary>
## </param>
#
interface(`xserver_xsession_entry_type',`
	gen_require(`
		type xsession_exec_t;
	')

	domain_entry_file($1, xsession_exec_t)
')

########################################
## <summary>
##	Execute an X session in the target domain.  This
##	is an explicit transition, requiring the
##	caller to use setexeccon().
## </summary>
## <desc>
##	<p>
##	Execute an Xsession in the target domain.  This
##	is an explicit transition, requiring the
##	caller to use setexeccon().
##	</p>
##	<p>
##	No interprocess communication (signals, pipes,
##	etc.) is provided by this interface since
##	the domains are not owned by this module.
##	</p>
## </desc>
## <param name="domain">
##	<summary>
##	Domain allowed to transition.
##	</summary>
## </param>
## <param name="target_domain">
##	<summary>
##	The type of the shell process.
##	</summary>
## </param>
#
interface(`xserver_xsession_spec_domtrans',`
	gen_require(`
		type xsession_exec_t;
	')

	domain_trans($1, xsession_exec_t, $2)
')

########################################
## <summary>
##	Get the attributes of X server logs.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_getattr_log',`
	gen_require(`
		type xserver_log_t;
	')

	logging_search_logs($1)
	allow $1 xserver_log_t:file getattr;
')

########################################
## <summary>
##	Do not audit attempts to write the X server
##	log files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain to not audit.
##	</summary>
## </param>
#
interface(`xserver_dontaudit_write_log',`
	gen_require(`
		type xserver_log_t;
	')

	dontaudit $1 xserver_log_t:file rw_inherited_file_perms;
')

########################################
## <summary>
##	Delete X server log files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_delete_log',`
	gen_require(`
		type xserver_log_t;
	')

	logging_search_logs($1)
	allow $1 xserver_log_t:dir list_dir_perms;
	delete_files_pattern($1, xserver_log_t, xserver_log_t)
	delete_fifo_files_pattern($1, xserver_log_t, xserver_log_t)
')

########################################
## <summary>
##	Read X keyboard extension libraries.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_read_xkb_libs',`
	gen_require(`
		type xkb_var_lib_t;
	')

	files_search_var_lib($1)
	allow $1 xkb_var_lib_t:dir list_dir_perms;
	read_files_pattern($1, xkb_var_lib_t, xkb_var_lib_t)
	read_lnk_files_pattern($1, xkb_var_lib_t, xkb_var_lib_t)
')

########################################
## <summary>
##	Read xdm config files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain to not audit
##	</summary>
## </param>
#
interface(`xserver_read_xdm_etc_files',`
	gen_require(`
		type xdm_etc_t;
	')

	files_search_etc($1)
	read_files_pattern($1, xdm_etc_t, xdm_etc_t)
')

########################################
## <summary>
##	Manage xdm config files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain to not audit
##	</summary>
## </param>
#
interface(`xserver_manage_xdm_etc_files',`
	gen_require(`
		type xdm_etc_t;
	')

	files_search_etc($1)
	manage_files_pattern($1, xdm_etc_t, xdm_etc_t)
')

########################################
## <summary>
##	Read xdm temporary files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_read_xdm_tmp_files',`
	gen_require(`
		type xdm_tmp_t;
	')

	files_search_tmp($1)
	read_files_pattern($1, xdm_tmp_t, xdm_tmp_t)
')

########################################
## <summary>
##	Do not audit attempts to read xdm temporary files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain to not audit.
##	</summary>
## </param>
#
interface(`xserver_dontaudit_read_xdm_tmp_files',`
	gen_require(`
		type xdm_tmp_t;
	')

	dontaudit $1 xdm_tmp_t:dir search_dir_perms;
	dontaudit $1 xdm_tmp_t:file read_file_perms;
')

########################################
## <summary>
##	Read write xdm temporary files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_rw_xdm_tmp_files',`
	gen_require(`
		type xdm_tmp_t;
	')

	allow $1 xdm_tmp_t:dir search_dir_perms;
	allow $1 xdm_tmp_t:file rw_file_perms;
')

########################################
## <summary>
##	Create, read, write, and delete xdm temporary files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_manage_xdm_tmp_files',`
	gen_require(`
		type xdm_tmp_t;
	')

	manage_files_pattern($1, xdm_tmp_t, xdm_tmp_t)
')

########################################
## <summary>
##	Do not audit attempts to get the attributes of
##	xdm temporary named sockets.
## </summary>
## <param name="domain">
##	<summary>
##	Domain to not audit.
##	</summary>
## </param>
#
interface(`xserver_dontaudit_getattr_xdm_tmp_sockets',`
	gen_require(`
		type xdm_tmp_t;
	')

	dontaudit $1 xdm_tmp_t:sock_file getattr;
')

########################################
## <summary>
##	Execute the X server in the X server domain.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed to transition.
##	</summary>
## </param>
#
interface(`xserver_domtrans',`
	gen_require(`
		type xserver_t, xserver_exec_t;
	')

	allow $1 xserver_t:process siginh;
	domtrans_pattern($1, xserver_exec_t, xserver_t)

	allow xserver_t $1:process getpgid;
')

########################################
## <summary>
##	Signal X servers
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_signal',`
	gen_require(`
		type xserver_t;
	')

	allow $1 xserver_t:process signal;
')

########################################
## <summary>
##	Kill X servers
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_kill',`
	gen_require(`
		type xserver_t;
	')

	allow $1 xserver_t:process sigkill;
')

########################################
## <summary>
##	Read and write X server Sys V Shared
##	memory segments.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_rw_shm',`
	gen_require(`
		type xserver_t;
	')

	allow $1 xserver_t:shm rw_shm_perms;
')

########################################
## <summary>
##	Do not audit attempts to read and write to
##	X server sockets.
## </summary>
## <param name="domain">
##	<summary>
##	Domain to not audit.
##	</summary>
## </param>
#
interface(`xserver_dontaudit_rw_tcp_sockets',`
	gen_require(`
		type xserver_t;
	')

	dontaudit $1 xserver_t:tcp_socket { read write };
')

########################################
## <summary>
##	Do not audit attempts to read and write X server
##	unix domain stream sockets.
## </summary>
## <param name="domain">
##	<summary>
##	Domain to not audit.
##	</summary>
## </param>
#
interface(`xserver_dontaudit_rw_stream_sockets',`
	gen_require(`
		type xserver_t;
	')

	dontaudit $1 xserver_t:unix_stream_socket { read write };
')

########################################
## <summary>
##	Connect to the X server over a unix domain
##	stream socket.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_stream_connect',`
	gen_require(`
		type xserver_t, xserver_tmp_t;
	')

	files_search_tmp($1)
	stream_connect_pattern($1, xserver_tmp_t, xserver_tmp_t, xserver_t)
	allow xserver_t $1:shm rw_shm_perms;
')

########################################
## <summary>
##	Read X server temporary files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_read_tmp_files',`
	gen_require(`
		type xserver_tmp_t;
	')

	allow $1 xserver_tmp_t:file read_file_perms;
	files_search_tmp($1)
')

########################################
## <summary>
##	Interface to provide X object permissions on a given X server to
##	an X client domain.  Gives the domain permission to read the
##	virtual core keyboard and virtual core pointer devices.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_manage_core_devices',`
	gen_require(`
		type xserver_t;
		class x_device all_x_device_perms;
		class x_pointer all_x_pointer_perms;
		class x_keyboard all_x_keyboard_perms;
		class x_screen all_x_screen_perms;
		class x_drawable { manage };
		type root_xdrawable_t;
		attribute x_domain;
		class x_drawable { read manage setattr show };
		class x_resource { write read };
	')

	allow $1 xserver_t:{ x_device x_pointer x_keyboard } *;
	allow $1 xserver_t:{ x_screen } setattr;
	
	allow $1 x_domain:x_drawable { read manage setattr show };
	allow $1 x_domain:x_resource { write read };
	allow $1 root_xdrawable_t:x_drawable { manage read };
')

########################################
## <summary>
##	Interface to provide X object permissions on a given X server to
##	an X client domain.  Gives the domain complete control over the
##	display.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_unconfined',`
	gen_require(`
		attribute x_domain;
		attribute xserver_unconfined_type;
	')

	typeattribute $1 x_domain;
	typeattribute $1 xserver_unconfined_type;
')

########################################
## <summary>
##	Dontaudit append to .xsession-errors file
## </summary>
## <param name="domain">
##	<summary>
##	Domain to not audit
##	</summary>
## </param>
#
interface(`xserver_dontaudit_append_xdm_home_files',`
	gen_require(`
		type xdm_home_t;
		type xserver_tmp_t;
	')

	dontaudit $1 xdm_home_t:file rw_inherited_file_perms;
	dontaudit $1 xserver_tmp_t:file rw_inherited_file_perms;

	tunable_policy(`use_nfs_home_dirs',`
		fs_dontaudit_rw_nfs_files($1)
	')

	tunable_policy(`use_samba_home_dirs',`
		fs_dontaudit_rw_cifs_files($1)
	')
')

########################################
## <summary>
##	append to .xsession-errors file
## </summary>
## <param name="domain">
##	<summary>
##	Domain to not audit
##	</summary>
## </param>
#
interface(`xserver_append_xdm_home_files',`
	gen_require(`
		type xdm_home_t;
		type xserver_tmp_t;
	')

	allow $1 xdm_home_t:file append_file_perms;
	allow $1 xserver_tmp_t:file append_file_perms;

	tunable_policy(`use_nfs_home_dirs',`
		fs_append_nfs_files($1)
	')

	tunable_policy(`use_samba_home_dirs',`
		fs_append_cifs_files($1)
	')
')

########################################
## <summary>
##	Manage the xdm_spool files
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_xdm_manage_spool',`
	gen_require(`
		type xdm_spool_t;
	')

	files_search_spool($1)
	manage_files_pattern($1, xdm_spool_t, xdm_spool_t)
')

########################################
## <summary>
##	Send and receive messages from
##	xdm over dbus.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_dbus_chat_xdm',`
	gen_require(`
		type xdm_t;
		class dbus send_msg;
	')

	allow $1 xdm_t:dbus send_msg;
	allow xdm_t $1:dbus send_msg;
')

########################################
## <summary>
##	Read xserver files created in /var/run
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_read_pid',`
	gen_require(`
		type xserver_var_run_t;
	')

	files_search_pids($1)
	read_files_pattern($1, xserver_var_run_t, xserver_var_run_t)
')

########################################
## <summary>
##	Execute xserver files created in /var/run
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_exec_pid',`
	gen_require(`
		type xserver_var_run_t;
	')

	files_search_pids($1)
	exec_files_pattern($1, xserver_var_run_t, xserver_var_run_t)
')

########################################
## <summary>
##	Write xserver files created in /var/run
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_write_pid',`
	gen_require(`
		type xserver_var_run_t;
	')

	files_search_pids($1)
	write_files_pattern($1, xserver_var_run_t, xserver_var_run_t)
')

########################################
## <summary>
##	Allow append the xdm
##	log files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain to not audit
##	</summary>
## </param>
#
interface(`xserver_xdm_append_log',`
	gen_require(`
		type xdm_log_t;
		attribute xdmhomewriter;
	')

	typeattribute $1 xdmhomewriter;
	append_files_pattern($1, xdm_log_t, xdm_log_t)
')

########################################
## <summary>
##	Read a user Iceauthority domain.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
template(`xserver_read_user_iceauth',`
	gen_require(`
		type iceauth_home_t;
	')

	# Read .Iceauthority file
	allow $1 iceauth_home_t:file read_file_perms;
')

########################################
## <summary>
##	Read user homedir fonts.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_rw_inherited_user_fonts',`
	gen_require(`
		type user_fonts_t;
		type user_fonts_config_t;
	')

	allow $1 user_fonts_t:file rw_inherited_file_perms;
	allow $1 user_fonts_t:file read_lnk_file_perms;

	allow $1 user_fonts_config_t:file rw_inherited_file_perms;
')

########################################
## <summary>
##	Search XDM var lib dirs.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`xserver_search_xdm_lib',`
	gen_require(`
		type xdm_var_lib_t;
	')

	allow $1 xdm_var_lib_t:dir search_dir_perms;
')

########################################
## <summary>
##	Make an X executable an entrypoint for the specified domain.
## </summary>
## <param name="domain">
##	<summary>
##	The domain for which the shell is an entrypoint.
##	</summary>
## </param>
#
interface(`xserver_entry_type',`
	gen_require(`
		type xserver_exec_t;
	')

	domain_entry_file($1, xserver_exec_t)
')

########################################
## <summary>
##	Execute xsever in the xserver domain, and
##	allow the specified role the xserver domain.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
## <param name="role">
##	<summary>
##	The role to be allowed the xserver domain.
##	</summary>
## </param>
#
interface(`xserver_run',`
	gen_require(`
		type xserver_t;
	')

	xserver_domtrans($1)
	role $2 types xserver_t;
')

########################################
## <summary>
##	Execute xsever in the xserver domain, and
##	allow the specified role the xserver domain.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
## <param name="role">
##	<summary>
##	The role to be allowed the xserver domain.
##	</summary>
## </param>
#
interface(`xserver_run_xauth',`
	gen_require(`
		type xauth_t;
	')

	xserver_domtrans_xauth($1)
	role $2 types xauth_t;
')
########################################
## <summary>
##	Read user homedir fonts.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
## <rolecap/>
#
interface(`xserver_manage_home_fonts',`
	gen_require(`
		type user_fonts_t;
		type user_fonts_config_t;
	')

	manage_dirs_pattern($1, user_fonts_t, user_fonts_t)
	manage_files_pattern($1, user_fonts_t, user_fonts_t)
	manage_lnk_files_pattern($1, user_fonts_t, user_fonts_t)

	manage_files_pattern($1, user_fonts_config_t, user_fonts_config_t)
')