#DESC NTPD - Time synchronisation daemon

#

# Author:  Russell Coker <russell@coker.com.au>

# X-Debian-Packages: ntp ntp-simple

#

#################################

#

# Rules for the ntpd_t domain.

#

daemon_domain(ntpd, `, nscd_client_domain')

type ntp_drift_t, file_type, sysadmfile;

type ntpdate_exec_t, file_type, sysadmfile, exec_type;

domain_auto_trans(initrc_t, ntpdate_exec_t, ntpd_t)

logdir_domain(ntpd)

allow ntpd_t var_lib_t:dir r_dir_perms;

allow ntpd_t usr_t:file r_file_perms;

# reading  /usr/share/ssl/cert.pem requires

allow ntpd_t usr_t:lnk_file read;

allow ntpd_t ntp_drift_t:dir rw_dir_perms;

allow ntpd_t ntp_drift_t:file create_file_perms;

# for SSP

allow ntpd_t urandom_device_t:chr_file { getattr read };

# sys_resource and setrlimit is for locking memory

allow ntpd_t self:capability { chown dac_override kill setgid setuid sys_time net_bind_service ipc_lock sys_chroot sys_nice sys_resource };

dontaudit ntpd_t self:capability { fsetid net_admin };

allow ntpd_t self:process { setcap setsched setrlimit };

# ntpdate wants sys_nice

# for some reason it creates a file in /tmp

tmp_domain(ntpd)

allow ntpd_t etc_t:dir r_dir_perms;

allow ntpd_t etc_t:file { read getattr };

# Use the network.

can_network(ntpd_t)

allow ntpd_t ntp_port_t:tcp_socket name_connect;

can_ypbind(ntpd_t)

allow ntpd_t ntp_port_t:udp_socket name_bind;

allow sysadm_t ntp_port_t:udp_socket name_bind;

allow ntpd_t self:unix_dgram_socket create_socket_perms;

allow ntpd_t self:unix_stream_socket create_socket_perms;

allow ntpd_t self:netlink_route_socket r_netlink_socket_perms;

# so the start script can change firewall entries

allow initrc_t net_conf_t:file { getattr read ioctl };

# for cron jobs

# system_crond_t is not right, cron is not doing what it should

ifdef(`crond.te', `

system_crond_entry(ntpdate_exec_t, ntpd_t)

')

can_exec(ntpd_t, initrc_exec_t)

allow ntpd_t self:fifo_file { read write getattr };

allow ntpd_t etc_runtime_t:file r_file_perms;

can_exec(ntpd_t, { bin_t shell_exec_t sbin_t ls_exec_t ntpd_exec_t })

allow ntpd_t { sbin_t bin_t }:dir search;

allow ntpd_t bin_t:lnk_file read;

read_sysctl(ntpd_t);

allow ntpd_t proc_t:file r_file_perms;

allow ntpd_t sysadm_home_dir_t:dir r_dir_perms;

allow ntpd_t self:file { getattr read };

dontaudit ntpd_t domain:dir search;

ifdef(`logrotate.te', `

can_exec(ntpd_t, logrotate_exec_t)

')

allow ntpd_t devtty_t:chr_file rw_file_perms;

can_udp_send(ntpd_t, sysadm_t)

can_udp_send(sysadm_t, ntpd_t)

can_udp_send(ntpd_t, ntpd_t)

ifdef(`firstboot.te', `

dontaudit ntpd_t firstboot_t:fd use;

')

ifdef(`winbind.te', `

allow ntpd_t winbind_var_run_t:dir r_dir_perms;

allow ntpd_t winbind_var_run_t:sock_file rw_file_perms;

')

# For clock devices like wwvb1

allow ntpd_t device_t:lnk_file read;