/etc/apparmor.d/usr.sbin.chronyd is in chrony 3.2-4ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | # Last Modified: Sat Jan 20 10:45:05 2018
#include <tunables/global>
#include <tunables/sys>
/usr/sbin/chronyd (attach_disconnected) {
#include <abstractions/base>
#include <abstractions/nameservice>
capability sys_time,
capability net_bind_service,
capability setuid,
capability setgid,
capability sys_nice,
capability sys_resource,
# for /run/chrony to be created
capability chown,
# for hwtimestamp
capability net_admin,
/usr/sbin/chronyd mr,
/etc/chrony/{,**} r,
/{,var/}run/chronyd.pid w,
/{,var/}run/chrony/{,*} rw,
/var/lib/chrony/{,*} r,
/var/lib/chrony/* w,
/var/log/chrony/{,*} r,
/var/log/chrony/* w,
# 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}/class/hwmon/hwmon[0-9]*/temp[0-9]*_input r,
# rtc
/etc/adjtime r,
/dev/rtc{,[0-9]*} rw,
# gps devices
/dev/pps[0-9]* rw,
/dev/ptp[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>
}
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