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

## <summary>Network time protocol daemon</summary>

########################################
## <summary>
##	NTP stub interface.  No access allowed.
## </summary>
## <param name="domain" unused="true">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`ntp_stub',`
	gen_require(`
		type ntpd_t;
	')
')

########################################
## <summary>
##	Execute ntp server in the ntpd domain.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed to transition.
##	</summary>
## </param>
#
interface(`ntp_domtrans',`
	gen_require(`
		type ntpd_t, ntpd_exec_t;
	')

	corecmd_search_bin($1)
	domtrans_pattern($1, ntpd_exec_t, ntpd_t)
')

########################################
## <summary>
##	Execute ntp in the ntp domain, and
##	allow the specified role the ntp domain.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed to transition.
##	</summary>
## </param>
## <param name="role">
##	<summary>
##	Role allowed access.
##	</summary>
## </param>
## <rolecap/>
#
interface(`ntp_run',`
	gen_require(`
		type ntpd_t;
	')

	ntp_domtrans($1)
	role $2 types ntpd_t;
')

########################################
## <summary>
##	Execute ntp server in the ntpd domain.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed to transition.
##	</summary>
## </param>
#
interface(`ntp_domtrans_ntpdate',`
	gen_require(`
		type ntpd_t, ntpdate_exec_t;
	')

	corecmd_search_bin($1)
	domtrans_pattern($1, ntpdate_exec_t, ntpd_t)
')

########################################
## <summary>
##	Execute ntp server in the ntpd domain.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed to transition.
##	</summary>
## </param>
#
interface(`ntp_initrc_domtrans',`
	gen_require(`
		type ntpd_initrc_exec_t;
	')

	init_labeled_script_domtrans($1, ntpd_initrc_exec_t)
')

########################################
## <summary>
##	Read and write ntpd shared memory.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`ntp_rw_shm',`
	gen_require(`
		type ntpd_t, ntpd_tmpfs_t;
	')

	allow $1 ntpd_t:shm rw_shm_perms;
	list_dirs_pattern($1, ntpd_tmpfs_t, ntpd_tmpfs_t)
	rw_files_pattern($1, ntpd_tmpfs_t, ntpd_tmpfs_t)
	read_lnk_files_pattern($1, ntpd_tmpfs_t, ntpd_tmpfs_t)
	fs_search_tmpfs($1)
')

########################################
## <summary>
##	All of the rules required to administrate
##	an ntp environment
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
## <param name="role">
##	<summary>
##	The role to be allowed to manage the ntp domain.
##	</summary>
## </param>
## <rolecap/>
#
interface(`ntp_admin',`
	gen_require(`
		type ntpd_t, ntpd_tmp_t, ntpd_log_t;
		type ntpd_key_t, ntpd_var_run_t;
		type ntpd_initrc_exec_t;
	')

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

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

	admin_pattern($1, ntpd_key_t)

	logging_list_logs($1)
	admin_pattern($1, ntpd_log_t)

	files_list_tmp($1)
	admin_pattern($1, ntpd_tmp_t)

	files_list_pids($1)
	admin_pattern($1, ntpd_var_run_t)
')