89 lines
2.7 KiB
Text
89 lines
2.7 KiB
Text
# vim:syntax=apparmor
|
||
# Last Modified: Sun Sep 05 16:48:05 2021
|
||
|
||
abi <abi/3.0>,
|
||
|
||
#include <tunables/global>
|
||
|
||
/usr/sbin/chronyd flags=(attach_disconnected) {
|
||
#include <abstractions/base>
|
||
#include <abstractions/nameservice>
|
||
|
||
# For /run/chrony to be created
|
||
capability chown,
|
||
|
||
# Give “root” the ability to read and write the PID file
|
||
capability dac_override,
|
||
capability dac_read_search,
|
||
|
||
# Needed to support HW timestamping
|
||
capability net_admin,
|
||
|
||
# Needed to allow NTP server sockets to be bound to a privileged port
|
||
capability net_bind_service,
|
||
|
||
# Needed to allow an NTP socket to be bound to a device using the
|
||
# SO_BINDTODEVICE socket option on kernels before 5.7
|
||
capability net_raw,
|
||
|
||
# Needed to drop privileges
|
||
capability setgid,
|
||
capability setuid,
|
||
|
||
# Needed to set the SCHED_FIFO real-time scheduler at the specified priority
|
||
# using the '-P' option
|
||
capability sys_nice,
|
||
|
||
# Needed to lock chronyd into RAM
|
||
capability sys_resource,
|
||
|
||
# Needed to set the system/real-time clock
|
||
capability sys_time,
|
||
|
||
/usr/sbin/chronyd mr,
|
||
|
||
/etc/chrony/{,**} r,
|
||
/var/lib/chrony/{,*} rw,
|
||
/var/log/chrony/{,*} rw,
|
||
@{run}/chrony/{,*} rw,
|
||
@{run}/chrony-dhcp/{,*} r,
|
||
|
||
# Using the “tempcomp” directive gives chronyd the ability to improve
|
||
# the stability and accuracy of the clock by compensating the temperature
|
||
# changes measured by a sensor close to the oscillator.
|
||
@{sys}/**/hwmon[0-9]*/temp[0-9]*_input r,
|
||
|
||
# Support all paths suggested in the man page (LP: #1771028). Assume these
|
||
# are common use cases; others should be set as local include (see below).
|
||
# Configs using a 'chrony.' prefix like the tempcomp config file example
|
||
/etc/chrony.* r,
|
||
# Example gpsd socket is outside @{run}/chrony/
|
||
@{run}/chrony.*.sock rw,
|
||
# To sign replies to MS-SNTP clients by the smbd daemon
|
||
/var/lib/samba/ntp_signd/socket rw,
|
||
# Default path of the socket to sync with ptp4l
|
||
@{run}/refclock.ptp.sock rw,
|
||
|
||
# rtc
|
||
/etc/adjtime r,
|
||
/dev/rtc{,[0-9]*} rw,
|
||
|
||
# gps devices
|
||
/dev/pps[0-9]* rw,
|
||
/dev/ptp[0-9]* rw,
|
||
|
||
# Allow reading the chronyd configuration file that timemaster(8)
|
||
# generates, along with any other config files and sockets.
|
||
@{run}/timemaster/* r,
|
||
# Allow read-write access to the socket path(s).
|
||
@{run}/timemaster/chrony.SOCK[0-9]* rw,
|
||
|
||
# For use with clocks that report via shared memory (e.g. gpsd),
|
||
# you may need to give ntpd access to all of shared memory, though
|
||
# this can be considered dangerous. See https://launchpad.net/bugs/722815
|
||
# for details. To enable, add this to local/usr.sbin.chronyd:
|
||
# capability ipc_owner,
|
||
|
||
# Site-specific additions and overrides. See local/README for details.
|
||
#include <local/usr.sbin.chronyd>
|
||
}
|