selinux-policy/policy/modules/apps/sandbox.if

## <summary>policy for sandbox</summary>

########################################
## <summary>
##	Execute sandbox in the sandbox domain, and
##	allow the specified role the sandbox 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>
#
interface(`sandbox_transition',`
	gen_require(`
		type sandbox_xserver_t;
		attribute sandbox_domain;
		attribute sandbox_x_domain;
		attribute sandbox_file_type;
		attribute sandbox_tmpfs_type;
	')

	allow $1 sandbox_domain:process transition;
	dontaudit $1 sandbox_domain:process { noatsecure siginh rlimitinh };
	role $2 types sandbox_domain;
	allow sandbox_domain $1:process { sigchld signull };
	allow sandbox_domain $1:fifo_file rw_inherited_fifo_file_perms;

	allow $1 sandbox_x_domain:process { signal_perms transition };
	dontaudit $1 sandbox_x_domain:process { noatsecure siginh rlimitinh };
	allow sandbox_x_domain $1:process { sigchld signull };
	dontaudit sandbox_domain $1:process signal;
	role $2 types sandbox_x_domain;
	role $2 types sandbox_xserver_t;
	allow $1 sandbox_xserver_t:process signal_perms;
	dontaudit sandbox_xserver_t $1:fifo_file rw_inherited_fifo_file_perms;
	dontaudit sandbox_xserver_t $1:tcp_socket rw_socket_perms;
	dontaudit sandbox_xserver_t $1:udp_socket rw_socket_perms;
	allow sandbox_xserver_t $1:unix_stream_socket { connectto rw_socket_perms };
	allow sandbox_x_domain sandbox_x_domain:process signal;
	# Dontaudit leaked file descriptors
	dontaudit sandbox_x_domain $1:fifo_file { read write };
	dontaudit sandbox_x_domain $1:tcp_socket rw_socket_perms;
	dontaudit sandbox_x_domain $1:udp_socket rw_socket_perms;
	dontaudit sandbox_x_domain $1:unix_stream_socket { read write };
	dontaudit sandbox_x_domain $1:process signal;
	
	allow $1 sandbox_tmpfs_type:file manage_file_perms;
	dontaudit $1 sandbox_tmpfs_type:file manage_file_perms;

	can_exec($1, sandbox_file_type)
	manage_files_pattern($1, sandbox_file_type, sandbox_file_type);
	manage_dirs_pattern($1, sandbox_file_type, sandbox_file_type);
	manage_sock_files_pattern($1, sandbox_file_type, sandbox_file_type);
	manage_fifo_files_pattern($1, sandbox_file_type, sandbox_file_type);
	manage_lnk_files_pattern($1, sandbox_file_type, sandbox_file_type);
	relabel_dirs_pattern($1, sandbox_file_type, sandbox_file_type)
	relabel_files_pattern($1, sandbox_file_type, sandbox_file_type)
	relabel_lnk_files_pattern($1, sandbox_file_type, sandbox_file_type)
	relabel_fifo_files_pattern($1, sandbox_file_type, sandbox_file_type)
	relabel_sock_files_pattern($1, sandbox_file_type, sandbox_file_type)
')

########################################
## <summary>
##	Creates types and rules for a basic
##	qemu process domain.
## </summary>
## <param name="prefix">
##	<summary>
##	Prefix for the domain.
##	</summary>
## </param>
#
template(`sandbox_domain_template',`

	gen_require(`
		attribute sandbox_domain;
		attribute sandbox_file_type;
		attribute sandbox_x_type;
	')

	type $1_t, sandbox_domain, sandbox_x_type;
	application_type($1_t)

	mls_rangetrans_target($1_t)
	mcs_untrusted_proc($1_t)

	type $1_file_t, sandbox_file_type;
	files_type($1_file_t)

	can_exec($1_t, $1_file_t)
	manage_dirs_pattern($1_t, $1_file_t, $1_file_t)
	manage_files_pattern($1_t, $1_file_t, $1_file_t)
	manage_lnk_files_pattern($1_t, $1_file_t, $1_file_t)
	manage_fifo_files_pattern($1_t, $1_file_t, $1_file_t)
	manage_sock_files_pattern($1_t, $1_file_t, $1_file_t)
')

########################################
## <summary>
##	Creates types and rules for a basic
##	qemu process domain.
## </summary>
## <param name="prefix">
##	<summary>
##	Prefix for the domain.
##	</summary>
## </param>
#
template(`sandbox_x_domain_template',`
	gen_require(`
		type xserver_exec_t, sandbox_devpts_t;
		type sandbox_xserver_t;
		attribute sandbox_domain, sandbox_x_domain;
		attribute sandbox_file_type, sandbox_tmpfs_type;
	')

	type $1_t, sandbox_x_domain;
	application_type($1_t)
	mcs_untrusted_proc($1_t)

	type $1_file_t, sandbox_file_type;
	files_type($1_file_t)

	can_exec($1_t, $1_file_t)
	manage_dirs_pattern($1_t, $1_file_t, $1_file_t)
	manage_files_pattern($1_t, $1_file_t, $1_file_t)
	manage_lnk_files_pattern($1_t, $1_file_t, $1_file_t)
	manage_fifo_files_pattern($1_t, $1_file_t, $1_file_t)
	manage_sock_files_pattern($1_t, $1_file_t, $1_file_t)

	type $1_devpts_t;
	term_pty($1_devpts_t)
	term_create_pty($1_t, $1_devpts_t)
	allow $1_t $1_devpts_t:chr_file { rw_chr_file_perms setattr };

	# window manager
	miscfiles_setattr_fonts_cache_dirs($1_t)
	allow $1_t self:capability setuid;

	type $1_client_t, sandbox_x_domain;
	application_type($1_client_t)
	mcs_untrusted_proc($1_t)

	type $1_client_tmpfs_t, sandbox_tmpfs_type;
	files_tmpfs_file($1_client_tmpfs_t)

	term_search_ptys($1_t)
	allow $1_client_t sandbox_devpts_t:chr_file { rw_term_perms setattr };
	term_create_pty($1_client_t,sandbox_devpts_t)

	manage_files_pattern($1_client_t, $1_client_tmpfs_t, $1_client_tmpfs_t)
	fs_tmpfs_filetrans($1_client_t, $1_client_tmpfs_t, file )
	# Pulseaudio tmpfs files with different MCS labels
	dontaudit $1_client_t $1_client_tmpfs_t:file { read write };
	allow sandbox_xserver_t $1_client_tmpfs_t:file { read write };

	domtrans_pattern($1_t, xserver_exec_t, sandbox_xserver_t)
	allow $1_t sandbox_xserver_t:process signal_perms;

	domtrans_pattern($1_t, $1_file_t, $1_client_t)
	domain_entry_file($1_client_t,  $1_file_t)

	# Random tmpfs_t that gets created when you run X. 
	fs_rw_tmpfs_files($1_t)

	manage_dirs_pattern(sandbox_xserver_t, $1_file_t, $1_file_t)
	manage_files_pattern(sandbox_xserver_t, $1_file_t, $1_file_t)
	manage_sock_files_pattern(sandbox_xserver_t, $1_file_t, $1_file_t)
	allow sandbox_xserver_t $1_file_t:sock_file create_sock_file_perms;
	ps_process_pattern(sandbox_xserver_t, $1_client_t)
	ps_process_pattern(sandbox_xserver_t, $1_t)
	allow sandbox_xserver_t $1_client_t:shm rw_shm_perms;
	allow sandbox_xserver_t $1_t:shm rw_shm_perms;
	allow $1_client_t $1_t:unix_stream_socket connectto;
	allow $1_t $1_client_t:unix_stream_socket connectto;

	can_exec($1_client_t, $1_file_t)
	manage_dirs_pattern($1_client_t, $1_file_t, $1_file_t)
	manage_files_pattern($1_client_t, $1_file_t, $1_file_t)
	manage_lnk_files_pattern($1_client_t, $1_file_t, $1_file_t)
	manage_fifo_files_pattern($1_client_t, $1_file_t, $1_file_t)
	manage_sock_files_pattern($1_client_t, $1_file_t, $1_file_t)
')

########################################
## <summary>
##	allow domain to read, 
##	write sandbox_xserver tmp files
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access
##	</summary>
## </param>
#
interface(`sandbox_rw_xserver_tmpfs_files',`
	gen_require(`
		type sandbox_xserver_tmpfs_t;
	')

	allow $1 sandbox_xserver_tmpfs_t:file rw_file_perms;
')

########################################
## <summary>
##	allow domain to read
##	sandbox tmpfs files
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access
##	</summary>
## </param>
#
interface(`sandbox_read_tmpfs_files',`
	gen_require(`
		attribute sandbox_tmpfs_type;
	')

	allow $1 sandbox_tmpfs_type:file read_file_perms;
')

########################################
## <summary>
##	allow domain to manage
##	sandbox tmpfs files
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access
##	</summary>
## </param>
#
interface(`sandbox_manage_tmpfs_files',`
	gen_require(`
		attribute sandbox_tmpfs_type;
	')

	allow $1 sandbox_tmpfs_type:file manage_file_perms;
')

########################################
## <summary>
##	Delete sandbox files
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access
##	</summary>
## </param>
#
interface(`sandbox_delete_files',`
	gen_require(`
		attribute sandbox_file_type;
	')

	delete_files_pattern($1, sandbox_file_type, sandbox_file_type)
')

########################################
## <summary>
##	Delete sandbox sock files
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access
##	</summary>
## </param>
#
interface(`sandbox_delete_sock_files',`
	gen_require(`
		attribute sandbox_file_type;
	')

	delete_sock_files_pattern($1, sandbox_file_type, sandbox_file_type)
')

########################################
## <summary>
##	Allow domain to  set the attributes
##	of the sandbox directory.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access
##	</summary>
## </param>
#
interface(`sandbox_setattr_dirs',`
	gen_require(`
		attribute sandbox_file_type;
	')

	allow $1 sandbox_file_type:dir setattr;
')

########################################
## <summary>
##	allow domain to delete sandbox files
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access
##	</summary>
## </param>
#
interface(`sandbox_delete_dirs',`
	gen_require(`
		attribute sandbox_file_type;
	')

	delete_dirs_pattern($1, sandbox_file_type, sandbox_file_type)
')

########################################
## <summary>
##	allow domain to list sandbox dirs
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access
##	</summary>
## </param>
#
interface(`sandbox_list',`
	gen_require(`
		attribute sandbox_file_type;
	')

	allow $1 sandbox_file_type:dir list_dir_perms;
')