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/usr/share/selinux/ubuntu/include/services/nis.if is in selinux-policy-ubuntu-dev 0.2.20091117-0ubuntu2.

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The actual contents of the file can be viewed below.

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## <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">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </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 list_dir_perms;
	allow $1 var_yp_t:lnk_file { getattr read };
	allow $1 var_yp_t:file read_file_perms;

	corenet_all_recvfrom_unlabeled($1)
	corenet_all_recvfrom_netlabel($1)
	corenet_tcp_sendrecv_generic_if($1)
	corenet_udp_sendrecv_generic_if($1)
	corenet_tcp_sendrecv_generic_node($1)
	corenet_udp_sendrecv_generic_node($1)
	corenet_tcp_sendrecv_all_ports($1)
	corenet_udp_sendrecv_all_ports($1)
	corenet_tcp_bind_generic_node($1)
	corenet_udp_bind_generic_node($1)
	corenet_tcp_bind_generic_port($1)
	corenet_udp_bind_generic_port($1)
	corenet_dontaudit_tcp_bind_all_reserved_ports($1)
	corenet_dontaudit_udp_bind_all_reserved_ports($1)
	corenet_dontaudit_tcp_bind_all_ports($1)
	corenet_dontaudit_udp_bind_all_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_ports($1)
	corenet_sendrecv_portmap_client_packets($1)
	corenet_sendrecv_generic_client_packets($1)
	corenet_sendrecv_generic_server_packets($1)

	sysnet_read_config($1)
')

########################################
## <summary>
##	Use the ypbind service to access NIS services.
## </summary>
## <param name="domain">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </param>
## <rolecap/>
#
interface(`nis_use_ypbind',`
	tunable_policy(`allow_ypbind',`
		nis_use_ypbind_uncond($1)
	')
')

########################################
## <summary>
##	Use the nis to authenticate passwords
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
## <rolecap/>
#
interface(`nis_authenticate',`
	tunable_policy(`allow_ypbind',`
		nis_use_ypbind_uncond($1)
		corenet_tcp_bind_all_rpc_ports($1)
		corenet_udp_bind_all_rpc_ports($1)
	')
')

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

	corecmd_search_bin($1)
	domtrans_pattern($1, ypbind_exec_t, ypbind_t)
')

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

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

########################################
## <summary>
##	Send UDP network traffic to NIS clients.  (Deprecated)
## </summary>
## <param name="domain">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </param>
#
interface(`nis_udp_send_ypbind',`
	refpolicywarn(`$0($*) has been deprecated.')
')

########################################
## <summary>
##	Connect to ypbind over TCP.  (Deprecated)
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`nis_tcp_connect_ypbind',`
	refpolicywarn(`$0($*) has been deprecated.')
')

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

	files_search_pids($1)
	allow $1 ypbind_var_run_t:file read_file_perms;
')

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

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

########################################
## <summary>
##	Execute ypxfr in the ypxfr domain.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`nis_domtrans_ypxfr',`
	gen_require(`
		type ypxfr_t, ypxfr_exec_t;
	')

	corecmd_search_bin($1)
	domtrans_pattern($1, ypxfr_exec_t, ypxfr_t)
')

########################################
## <summary>
##	All of the rules required to administrate 
##	an nis environment
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
## <param name="role">
##	<summary>
##	Role allowed access.
##	</summary>
## </param>
## <rolecap/>
#
interface(`nis_admin',`
	gen_require(`
		type ypbind_t, yppasswdd_t, ypserv_t, ypxfr_t;
		type ypbind_tmp_t, ypserv_tmp_t, ypserv_conf_t;
		type ypbind_var_run_t, yppasswdd_var_run_t, ypserv_var_run_t;
	')

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

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

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

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

	files_list_tmp($1)
	admin_pattern($1, ypbind_tmp_t)

	files_list_pids($1)
	admin_pattern($1, ypbind_var_run_t)

	admin_pattern($1, yppasswdd_var_run_t)

	files_list_etc($1)
	admin_pattern($1, ypserv_conf_t)

	admin_pattern($1, ypserv_tmp_t)

	admin_pattern($1, ypserv_var_run_t)
')