/lib/systemd/system/dev-mqueue.mount is in systemd 215-17+deb8u7.
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 | # This file is part of systemd.
#
# systemd is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
[Unit]
Description=POSIX Message Queue File System
Documentation=man:mq_overview(7)
Documentation=http://www.freedesktop.org/wiki/Software/systemd/APIFileSystems
DefaultDependencies=no
Before=sysinit.target
ConditionPathExists=/proc/sys/fs/mqueue
[Mount]
What=mqueue
Where=/dev/mqueue
Type=mqueue
|