/etc/apparmor.d/abstractions/user-write is in apparmor 2.7.102-0ubuntu3.
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 | # ------------------------------------------------------------------
#
# Copyright (C) 2002-2006 Novell/SUSE
#
# 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.
#
# ------------------------------------------------------------------
# per-user write directories
owner @{HOME}/ r,
owner @{HOME}/Desktop/ r,
owner @{HOME}/Documents/ r,
owner @{HOME}/Public/ r,
owner @{HOME}/[a-zA-Z0-9]*/ rw,
owner @{HOME}/[a-zA-Z0-9]* rwl,
owner @{HOME}/Desktop/** rwl,
owner @{HOME}/Documents/** rwl,
owner @{HOME}/Public/** rwl,
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