Systemd/units/systemd-udevd.service.in
Lennart Poettering 0c28d51ac8 units: further lock down our long-running services
Let's make this an excercise in dogfooding: let's turn on more security
features for all our long-running services.

Specifically:

- Turn on RestrictRealtime=yes for all of them

- Turn on ProtectKernelTunables=yes and ProtectControlGroups=yes for most of
  them

- Turn on RestrictAddressFamilies= for all of them, but different sets of
  address families for each

Also, always order settings in the unit files, that the various sandboxing
features are close together.

Add a couple of missing, older settings for a numbre of unit files.

Note that this change turns off AF_INET/AF_INET6 from udevd, thus effectively
turning of networking from udev rule commands. Since this might break stuff
(that is already broken I'd argue) this is documented in NEWS.
2016-09-25 10:52:57 +02:00

31 lines
955 B
SYSTEMD

# 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=udev Kernel Device Manager
Documentation=man:systemd-udevd.service(8) man:udev(7)
DefaultDependencies=no
Wants=systemd-udevd-control.socket systemd-udevd-kernel.socket
After=systemd-udevd-control.socket systemd-udevd-kernel.socket systemd-sysusers.service
Before=sysinit.target
ConditionPathIsReadWrite=/sys
[Service]
Type=notify
OOMScoreAdjust=-1000
Sockets=systemd-udevd-control.socket systemd-udevd-kernel.socket
Restart=always
RestartSec=0
ExecStart=@rootlibexecdir@/systemd-udevd
KillMode=mixed
WatchdogSec=3min
TasksMax=infinity
MountFlags=slave
MemoryDenyWriteExecute=yes
RestrictRealtime=yes
RestrictAddressFamilies=AF_UNIX AF_NETLINK