selinux-policy/refpolicy/policy/modules/services/nis.if

## <summary>Policy for NIS (YP) servers and clients</summary>

########################################
## <summary>
##	Use the ypbind service to access NIS services
##	unconditionally.
## </summary>
## <desc>
##	<p>
##	Use the ypbind service to access NIS services
##	unconditionally.
##	</p>
##	<p>
##	This interface was added because of apache and
##	spamassassin, to fix a nested conditionals problem.
##	When that support is added, this should be removed,
##	and the regular	interface should be used.
##	</p>
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`nis_use_ypbind_uncond',`
	gen_require(`
		type var_yp_t;
	')

	dontaudit $1 self:capability net_bind_service;

	allow $1 self:tcp_socket create_stream_socket_perms;
	allow $1 self:udp_socket create_socket_perms;

	allow $1 var_yp_t:dir r_dir_perms;
	allow $1 var_yp_t:lnk_file { getattr read };
	allow $1 var_yp_t:file r_file_perms;

	corenet_tcp_sendrecv_all_if($1)
	corenet_udp_sendrecv_all_if($1)
	corenet_raw_sendrecv_all_if($1)
	corenet_tcp_sendrecv_all_nodes($1)
	corenet_udp_sendrecv_all_nodes($1)
	corenet_raw_sendrecv_all_nodes($1)
	corenet_tcp_sendrecv_all_ports($1)
	corenet_udp_sendrecv_all_ports($1)
	corenet_tcp_bind_all_nodes($1)
	corenet_udp_bind_all_nodes($1)
	corenet_tcp_bind_generic_port($1)
	corenet_udp_bind_generic_port($1)
	corenet_tcp_bind_reserved_port($1)
	corenet_udp_bind_reserved_port($1)
	corenet_dontaudit_tcp_bind_all_reserved_ports($1)
	corenet_dontaudit_udp_bind_all_reserved_ports($1)
	corenet_tcp_connect_portmap_port($1)
	corenet_tcp_connect_reserved_port($1)
	corenet_tcp_connect_generic_port($1)
	corenet_dontaudit_tcp_connect_all_reserved_ports($1)

	sysnet_read_config($1)
')

########################################
## <summary>
##	Use the ypbind service to access NIS services.
## </summary>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`nis_use_ypbind',`
	gen_require(`
		type var_yp_t;
	')

	tunable_policy(`allow_ypbind',`
		dontaudit $1 self:capability net_bind_service;

		allow $1 self:tcp_socket create_stream_socket_perms;
		allow $1 self:udp_socket create_socket_perms;

		allow $1 var_yp_t:dir r_dir_perms;
		allow $1 var_yp_t:lnk_file { getattr read };
		allow $1 var_yp_t:file r_file_perms;

		corenet_tcp_sendrecv_all_if($1)
		corenet_udp_sendrecv_all_if($1)
		corenet_raw_sendrecv_all_if($1)
		corenet_tcp_sendrecv_all_nodes($1)
		corenet_udp_sendrecv_all_nodes($1)
		corenet_raw_sendrecv_all_nodes($1)
		corenet_tcp_sendrecv_all_ports($1)
		corenet_udp_sendrecv_all_ports($1)
		corenet_tcp_bind_all_nodes($1)
		corenet_udp_bind_all_nodes($1)
		corenet_tcp_bind_generic_port($1)
		corenet_udp_bind_generic_port($1)
		corenet_tcp_bind_reserved_port($1)
		corenet_udp_bind_reserved_port($1)
		corenet_dontaudit_tcp_bind_all_reserved_ports($1)
		corenet_dontaudit_udp_bind_all_reserved_ports($1)
		corenet_tcp_connect_portmap_port($1)
		corenet_tcp_connect_reserved_port($1)
		corenet_tcp_connect_generic_port($1)
		corenet_dontaudit_tcp_connect_all_reserved_ports($1)

		sysnet_read_config($1)
	',`
		dontaudit $1 var_yp_t:dir search;
	')

	optional_policy(`mount',`
		tunable_policy(`allow_ypbind',`
			mount_send_nfs_client_request($1)
		')
	')
')

########################################
## <summary>
##	Execute ypbind in the ypbind domain.
## </summary>
## <param name="domain">
##	Domain allowed access.
## </param>
#
interface(`nis_domtrans_ypbind',`
	gen_require(`
		type ypbind_t, ypbind_exec_t;
	')

	corecmd_search_bin($1)
	domain_auto_trans($1,ypbind_exec_t,ypbind_t)

	allow $1 ypbind_t:fd use;
	allow ypbind_t $1:fd use;
	allow ypbind_t $1:fifo_file rw_file_perms;
	allow ypbind_t $1:process sigchld;
')

########################################
## <summary>
##	Send generic signals to ypbind.
## </summary>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`nis_signal_ypbind',`
	gen_require(`
		type ypbind_t;
	')

	allow $1 ypbind_t:process signal;
')

########################################
## <summary>
##	List the contents of the NIS data directory.
## </summary>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`nis_list_var_yp',`
	gen_require(`
		type var_yp_t;
	')

	files_search_var($1)
	allow $1 var_yp_t:dir r_dir_perms;
')

########################################
## <summary>
##	Send UDP network traffic to NIS clients.
## </summary>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`nis_udp_sendto_ypbind',`
	gen_require(`
		type ypbind_t;
	')

	allow $1 ypbind_t:udp_socket sendto;
	allow ypbind_t $1:udp_socket recvfrom;
')

########################################
## <summary>
##	Connect to ypbind over TCP.
## </summary>
## <param name="domain">
##	Domain allowed access.
## </param>
#
interface(`nis_tcp_connect_ypbind',`
	gen_require(`
		type ypbind_t;
	')

	allow $1 ypbind_t:tcp_socket { connectto recvfrom };
	allow ypbind_t $1:tcp_socket { acceptfrom recvfrom };
	allow $1 kernel_t:tcp_socket recvfrom;
')

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

	files_search_pids($1)
	allow $1 ypbind_t:file r_file_perms;
')

########################################
## <summary>
##	Delete ypbind pid files.
## </summary>
## <param name="domain">
##	Domain allowed access.
## </param>
#
interface(`nis_delete_ypbind_pid',`
	gen_require(`
		type ypbind_t;
	')

	# TODO: add delete pid from dir call to files
	allow $1 ypbind_t:file unlink;
')

########################################
## <summary>
##	Read ypserv configuration files.
## </summary>
## <param name="domain">
##	Domain allowed access.
## </param>
#
interface(`nis_read_ypserv_config',`
	gen_require(`
		type ypserv_t;
	')

	files_search_etc($1)
	allow $1 ypserv_t:file { getattr read };
')