systemd/units/systemd-vmspawn@.service.in

#  SPDX-License-Identifier: LGPL-2.1-or-later
#
#  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=Virtual Machine %i
Documentation=man:systemd-vmspawn(1)
PartOf=machines.target
Before=machines.target
After=network.target modprobe@tun.service
RequiresMountsFor=/var/lib/machines/%i

[Service]
ExecStart=systemd-vmspawn --quiet --register=yes --keep-unit --network-tap --machine=%i
KillMode=mixed
Type=notify
Slice=machine.slice

{# Enforce a strict device policy. Make sure to keep these policies in sync if you change them! #}
DevicePolicy=closed
DeviceAllow=/dev/net/tun rwm
DeviceAllow=char-pts rw

# vmspawn itself needs access to /dev/kvm and /dev/vhost-vsock
DeviceAllow=/dev/kvm rw
DeviceAllow=/dev/vhost-vsock rw

[Install]
WantedBy=machines.target