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

## <summary>Point to Point Protocol daemon creates links in ppp networks</summary>

########################################
## <summary>
##	Use PPP file discriptors.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`ppp_use_fds',`
	gen_require(`
		type pppd_t;
	')

	allow $1 pppd_t:fd use;
')

########################################
## <summary>
##	Do not audit attempts to inherit
##	and use PPP file discriptors.
## </summary>
## <param name="domain">
##	<summary>
##	Domain to not audit.
##	</summary>
## </param>
#
interface(`ppp_dontaudit_use_fds',`
	gen_require(`
		type pppd_t;
	')

	dontaudit $1 pppd_t:fd use;
')

########################################
## <summary>
##	Send a SIGCHLD signal to PPP.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`ppp_sigchld',`
	gen_require(`
		type pppd_t;

	')

	allow $1 pppd_t:process sigchld;
')

########################################
## <summary>
##	Send a generic signal to PPP.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`ppp_signal',`
	gen_require(`
		type pppd_t;
	')

	allow $1 pppd_t:process signal;
')

########################################
## <summary>
##	 Execute domain in the ppp domain.
## </summary>
## <param name="domain">
##	<summary>
##	 Domain allowed access.
##	</summary>
## </param>
#
interface(`ppp_domtrans',`
	gen_require(`
		type pppd_t, pppd_exec_t;
	')

	corecmd_search_sbin($1)
	domain_auto_trans($1, pppd_exec_t, pppd_t)

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

########################################
## <summary>
##	 Conditionally execute ppp daemon on behalf of a user or staff type.
## </summary>
## <param name="domain">
##	<summary>
##	 Domain allowed access.
##	</summary>
## </param>
#
interface(`ppp_run_cond',`
	gen_require(`
		type pppd_t;
	')

	role $2 types pppd_t;

	tunable_policy(`pppd_for_user',`
		ppp_domtrans($1)
		allow pppd_t $3:chr_file rw_term_perms;
	')
')

########################################
## <summary>
##	 Unconditionally execute ppp daemon on behalf of a user or staff type.
## </summary>
## <param name="domain">
##	<summary>
##	 Domain allowed access.
##	</summary>
## </param>
#
interface(`ppp_run',`
	gen_require(`
		type pppd_t;
	')

	ppp_domtrans($1)
	role $2 types pppd_t;
	allow pppd_t $3:chr_file rw_term_perms;
')