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

## <summary>Libvirt virtualization API</summary>

########################################
## <summary>
##	Creates types and rules for a basic
##	qemu process domain.
## </summary>
## <param name="prefix">
##	<summary>
##	Prefix for the domain.
##	</summary>
## </param>
#
template(`virt_domain_template',`
	gen_require(`
		type virtd_t;
		attribute virt_image_type, virt_domain;
	')

	type $1_t, virt_domain;
	domain_type($1_t)
	domain_user_exemption_target($1_t)
	mls_rangetrans_target($1_t)
	role system_r types $1_t;

	type $1_devpts_t;
	term_pty($1_devpts_t)

	type $1_tmp_t;
	files_tmp_file($1_tmp_t)

	type $1_tmpfs_t;
	files_tmpfs_file($1_tmpfs_t)

	type $1_image_t, virt_image_type;
	files_type($1_image_t)
	dev_node($1_image_t)
	dev_associate_sysfs($1_image_t)

	allow $1_t $1_devpts_t:chr_file { rw_chr_file_perms setattr_chr_file_perms };
	term_create_pty($1_t, $1_devpts_t)

	manage_dirs_pattern($1_t, $1_image_t, $1_image_t)
	manage_files_pattern($1_t, $1_image_t, $1_image_t)
	manage_fifo_files_pattern($1_t, $1_image_t, $1_image_t)
	read_lnk_files_pattern($1_t, $1_image_t, $1_image_t)
	rw_chr_files_pattern($1_t, $1_image_t, $1_image_t)
	rw_blk_files_pattern($1_t, $1_image_t, $1_image_t)
	fs_hugetlbfs_filetrans($1_t, $1_image_t, file)

	manage_dirs_pattern($1_t, $1_tmp_t, $1_tmp_t)
	manage_files_pattern($1_t, $1_tmp_t, $1_tmp_t)
	manage_lnk_files_pattern($1_t, $1_tmp_t, $1_tmp_t)
	files_tmp_filetrans($1_t, $1_tmp_t, { file dir })

	manage_dirs_pattern($1_t, $1_tmpfs_t, $1_tmpfs_t)
	manage_files_pattern($1_t, $1_tmpfs_t, $1_tmpfs_t)
	manage_lnk_files_pattern($1_t, $1_tmpfs_t, $1_tmpfs_t)
	fs_tmpfs_filetrans($1_t, $1_tmpfs_t, { dir file lnk_file })

	optional_policy(`
		xserver_rw_shm($1_t)
	')
')

########################################
## <summary>
##	Make the specified type usable as a virt image
## </summary>
## <param name="type">
##	<summary>
##	Type to be used as a virtual image
##	</summary>
## </param>
#
interface(`virt_image',`
	gen_require(`
		attribute virt_image_type;
	')

	typeattribute $1 virt_image_type;
	files_type($1)

	# virt images can be assigned to blk devices
	dev_node($1)
')

########################################
## <summary>
##	Execute a domain transition to run virt.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed to transition.
##	</summary>
## </param>
#
interface(`virt_domtrans',`
	gen_require(`
		type virtd_t, virtd_exec_t;
	')

	domtrans_pattern($1, virtd_exec_t, virtd_t)
')

#######################################
## <summary>
##	Connect to virt over an unix domain stream socket.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`virt_stream_connect',`
	gen_require(`
		type virtd_t, virt_var_run_t;
	')

	files_search_pids($1)
	stream_connect_pattern($1, virt_var_run_t, virt_var_run_t, virtd_t)
')

########################################
## <summary>
##	Allow domain to attach to virt TUN devices
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`virt_attach_tun_iface',`
	gen_require(`
		type virtd_t;
	')

	allow $1 virtd_t:tun_socket relabelfrom;
	allow $1 self:tun_socket relabelto;
')

########################################
## <summary>
##	Read virt config files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`virt_read_config',`
	gen_require(`
		type virt_etc_t, virt_etc_rw_t;
	')

	files_search_etc($1)
	read_files_pattern($1, virt_etc_t, virt_etc_t)
	read_files_pattern($1, virt_etc_rw_t, virt_etc_rw_t)
	read_lnk_files_pattern($1, virt_etc_rw_t, virt_etc_rw_t)
')

########################################
## <summary>
##	manage virt config files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`virt_manage_config',`
	gen_require(`
		type virt_etc_t, virt_etc_rw_t;
	')

	files_search_etc($1)
	manage_files_pattern($1, virt_etc_t, virt_etc_t)
	manage_files_pattern($1, virt_etc_rw_t, virt_etc_rw_t)
	manage_lnk_files_pattern($1, virt_etc_rw_t, virt_etc_rw_t)
')

########################################
## <summary>
##	Allow domain to manage virt image files
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`virt_read_content',`
	gen_require(`
		type virt_content_t;
	')

	virt_search_lib($1)
	allow $1 virt_content_t:dir list_dir_perms;
	list_dirs_pattern($1, virt_content_t, virt_content_t)
	read_files_pattern($1, virt_content_t, virt_content_t)
	read_lnk_files_pattern($1, virt_content_t, virt_content_t)
	read_blk_files_pattern($1, virt_content_t, virt_content_t)

	tunable_policy(`virt_use_nfs',`
		fs_list_nfs($1)
		fs_read_nfs_files($1)
		fs_read_nfs_symlinks($1)
	')

	tunable_policy(`virt_use_samba',`
		fs_list_cifs($1)
		fs_read_cifs_files($1)
		fs_read_cifs_symlinks($1)
	')
')

########################################
## <summary>
##	Allow domain to write virt image files
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`virt_write_content',`
	gen_require(`
		type virt_content_t;
	')

	allow $1 virt_content_t:file write_file_perms;
')

########################################
## <summary>
##	Read virt PID files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`virt_read_pid_files',`
	gen_require(`
		type virt_var_run_t;
	')

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

########################################
## <summary>
##	Manage virt pid files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`virt_manage_pid_files',`
	gen_require(`
		type virt_var_run_t;
	')

	files_search_pids($1)
	manage_files_pattern($1, virt_var_run_t, virt_var_run_t)
')

########################################
## <summary>
##	Search virt lib directories.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`virt_search_lib',`
	gen_require(`
		type virt_var_lib_t;
	')

	allow $1 virt_var_lib_t:dir search_dir_perms;
	files_search_var_lib($1)
')

########################################
## <summary>
##	Read virt lib files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`virt_read_lib_files',`
	gen_require(`
		type virt_var_lib_t;
	')

	files_search_var_lib($1)
	read_files_pattern($1, virt_var_lib_t, virt_var_lib_t)
	read_lnk_files_pattern($1, virt_var_lib_t, virt_var_lib_t)
')

########################################
## <summary>
##	Dontaudit inherited read virt lib files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`virt_dontaudit_read_lib_files',`
	gen_require(`
		type virt_var_lib_t;
	')

	dontaudit $1 virt_var_lib_t:file read_inherited_file_perms;
')

########################################
## <summary>
##	Create, read, write, and delete
##	virt lib files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`virt_manage_lib_files',`
	gen_require(`
		type virt_var_lib_t;
	')

	files_search_var_lib($1)
	manage_files_pattern($1, virt_var_lib_t, virt_var_lib_t)
')

########################################
## <summary>
##	Allow the specified domain to read virt's log files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
## <rolecap/>
#
interface(`virt_read_log',`
	gen_require(`
		type virt_log_t;
	')

	logging_search_logs($1)
	read_files_pattern($1, virt_log_t, virt_log_t)
')

########################################
## <summary>
##	Allow the specified domain to append
##	virt log files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`virt_append_log',`
	gen_require(`
		type virt_log_t;
	')

	logging_search_logs($1)
	append_files_pattern($1, virt_log_t, virt_log_t)
')

########################################
## <summary>
##	Allow domain to manage virt log files
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`virt_manage_log',`
	gen_require(`
		type virt_log_t;
	')

	manage_dirs_pattern($1, virt_log_t, virt_log_t)
	manage_files_pattern($1, virt_log_t, virt_log_t)
	manage_lnk_files_pattern($1, virt_log_t, virt_log_t)
')

########################################
## <summary>
##	Allow domain to read virt image files
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`virt_read_images',`
	gen_require(`
		type virt_var_lib_t;
		attribute virt_image_type;
	')

	virt_search_lib($1)
	allow $1 virt_image_type:dir list_dir_perms;
	list_dirs_pattern($1, virt_image_type, virt_image_type)
	read_files_pattern($1, virt_image_type, virt_image_type)
	read_lnk_files_pattern($1, virt_image_type, virt_image_type)
	read_blk_files_pattern($1, virt_image_type, virt_image_type)

	tunable_policy(`virt_use_nfs',`
		fs_list_nfs($1)
		fs_read_nfs_files($1)
		fs_read_nfs_symlinks($1)
	')

	tunable_policy(`virt_use_samba',`
		fs_list_cifs($1)
		fs_read_cifs_files($1)
		fs_read_cifs_symlinks($1)
	')
')

########################################
## <summary>
##	Allow domain to read virt blk image files
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`virt_read_blk_images',`
	gen_require(`
		attribute virt_image_type;
	')

	read_blk_files_pattern($1, virt_image_type, virt_image_type)
')

########################################
## <summary>
##	Create, read, write, and delete
##	svirt cache files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`virt_manage_cache',`
	gen_require(`
		type virt_cache_t;
	')

	files_search_var($1)
	manage_dirs_pattern($1, virt_cache_t, virt_cache_t)
	manage_files_pattern($1, virt_cache_t, virt_cache_t)
	manage_lnk_files_pattern($1, virt_cache_t, virt_cache_t)
')

########################################
## <summary>
##	Allow domain to manage virt image files
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`virt_manage_images',`
	gen_require(`
		type virt_var_lib_t;
		attribute virt_image_type;
	')

	virt_search_lib($1)
	allow $1 virt_image_type:dir list_dir_perms;
	manage_dirs_pattern($1, virt_image_type, virt_image_type)
	manage_files_pattern($1, virt_image_type, virt_image_type)
	read_lnk_files_pattern($1, virt_image_type, virt_image_type)
	rw_blk_files_pattern($1, virt_image_type, virt_image_type)

	tunable_policy(`virt_use_nfs',`
		fs_manage_nfs_dirs($1)
		fs_manage_nfs_files($1)
		fs_read_nfs_symlinks($1)
	')

	tunable_policy(`virt_use_samba',`
		fs_manage_cifs_files($1)
		fs_manage_cifs_files($1)
		fs_read_cifs_symlinks($1)
	')
')

########################################
## <summary>
##	All of the rules required to administrate
##	an virt environment
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
## <param name="role">
##	<summary>
##	Role allowed access.
##	</summary>
## </param>
## <rolecap/>
#
interface(`virt_admin',`
	gen_require(`
		type virtd_t, virtd_initrc_exec_t;
	')

	allow $1 virtd_t:process { ptrace signal_perms };
	ps_process_pattern($1, virtd_t)

	init_labeled_script_domtrans($1, virtd_initrc_exec_t)
	domain_system_change_exemption($1)
	role_transition $2 virtd_initrc_exec_t system_r;
	allow $2 system_r;

	virt_manage_pid_files($1)

	virt_manage_lib_files($1)

	virt_manage_log($1)
')

########################################
## <summary>
##	Execute qemu in the svirt domain, and
##	allow the specified role the svirt domain.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access
##	</summary>
## </param>
## <param name="role">
##	<summary>
##	The role to be allowed the sandbox domain.
##	</summary>
## </param>
## <rolecap/>
#
interface(`virt_transition_svirt',`
	gen_require(`
		type svirt_t;
	')

	allow $1 svirt_t:process transition;
	role $2 types svirt_t;

	optional_policy(`
		ptchown_run(svirt_t, $2)
	')
')

########################################
## <summary>
##	Do not audit attempts to write virt daemon unnamed pipes.
## </summary>
## <param name="domain">
##	<summary>
##	Domain to not audit.
##	</summary>
## </param>
#
interface(`virt_dontaudit_write_pipes',`
	gen_require(`
		type virtd_t;
	')

	dontaudit $1 virtd_t:fifo_file write_fifo_file_perms;
')