units/systemd-nspawn@.service.in

   1 #  SPDX-License-Identifier: LGPL-2.1+
   2 #
   3 #  This file is part of systemd.
   4 #
   5 #  systemd is free software; you can redistribute it and/or modify it
   6 #  under the terms of the GNU Lesser General Public License as published by
   7 #  the Free Software Foundation; either version 2.1 of the License, or
   8 #  (at your option) any later version.
   9
  10 [Unit]
  11 Description=Container %i
  12 Documentation=man:systemd-nspawn(1)
  13 PartOf=machines.target
  14 Before=machines.target
  15 After=network.target systemd-resolved.service
  16 RequiresMountsFor=/var/lib/machines
  17
  18 [Service]
  19 # Make sure the DeviceAllow= lines below can properly resolve the 'block-loop' expression (and others)
  20 ExecStartPre=-/sbin/modprobe -abq tun loop dm-mod
  21 ExecStart=@bindir@/systemd-nspawn --quiet --keep-unit --boot --link-journal=try-guest --network-veth -U --settings=override --machine=%i
  22 KillMode=mixed
  23 Type=notify
  24 RestartForceExitStatus=133
  25 SuccessExitStatus=133
  26 WatchdogSec=3min
  27 Slice=machine.slice
  28 Delegate=yes
  29 TasksMax=16384
  30
  31 # Enforce a strict device policy, similar to the one nspawn configures when it
  32 # allocates its own scope unit. Make sure to keep these policies in sync if you
  33 # change them!
  34 DevicePolicy=closed
  35 DeviceAllow=/dev/net/tun rwm
  36 DeviceAllow=char-pts rw
  37
  38 # nspawn itself needs access to /dev/loop-control and /dev/loop, to implement
  39 # the --image= option. Add these here, too.
  40 DeviceAllow=/dev/loop-control rw
  41 DeviceAllow=block-loop rw
  42 DeviceAllow=block-blkext rw
  43
  44 # nspawn can set up LUKS encrypted loopback files, in which case it needs
  45 # access to /dev/mapper/control and the block devices /dev/mapper/*.
  46 DeviceAllow=/dev/mapper/control rw
  47 DeviceAllow=block-device-mapper rw
  48
  49 [Install]
  50 WantedBy=machines.target