/etc/apparmor.d/abstractions/cups-client is in apparmor 2.12-4ubuntu5.
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 | # vim:syntax=apparmor
# ------------------------------------------------------------------
#
# Copyright (C) 2009-2012 Canonical Ltd.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of version 2 of the GNU General Public
# License published by the Free Software Foundation.
#
# ------------------------------------------------------------------
# discoverable system configuration for non-local cupsd
/etc/cups/client.conf r,
# client should be able to talk the local cupsd
/{,var/}run/cups/cups.sock rw,
# client should be able to read user-specified cups configuration
owner @{HOME}/.cups/client.conf r,
owner @{HOME}/.cups/lpoptions r,
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