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systemd/units/systemd-confext.service
Kai Lueke 721412ac98 systemd-sysext/confext.service: Refresh on start/reload
When adding a sysext image to the system and manuall merging it, a
later "systemctl (re)start systemd-sysext" won't work because "merge"
refuses to work when something is merged already. Another problem with
"merge" at start plus "unmerge" at stop is that a service restart can't
make use of the new MOVE_MOUNT_BENEATH in the future even which would
only be available in "refresh". It also prepares us for setting up the
merged overlay for the sysroot from the initrd already, which also
would lead to the mentioned start problem of the service (One
optimization could be to skip the loading but only if we are sure that
all images were loaded and weren't modified since - this assumption is
hard because early services could want to inject a sysext, too).

Use "refresh" on service start to fix the problem that the service
can't start as soon as a manual merge was done. Also add a reload
action that allows to issue "systemctl reload systemd-sysext" and it
will make use of MOVE_MOUNT_BENEATH once we implement this in
systemd-sysext refresh (and it's available from the kernel).
2023-04-06 20:47:26 +09:00

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# 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=Merge System Configuration Images into /etc/
Documentation=man:systemd-confext.service(8)
ConditionCapability=CAP_SYS_ADMIN
ConditionDirectoryNotEmpty=|/run/confexts
ConditionDirectoryNotEmpty=|/var/lib/confexts
ConditionDirectoryNotEmpty=|/usr/local/lib/confexts
ConditionDirectoryNotEmpty=|/usr/lib/confexts
DefaultDependencies=no
After=local-fs.target
Before=sysinit.target systemd-tmpfiles-setup.service
Conflicts=shutdown.target initrd-switch-root.target
Before=shutdown.target initrd-switch-root.target
[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=systemd-confext refresh
ExecReload=systemd-confext refresh
ExecStop=systemd-confext unmerge
[Install]
WantedBy=sysinit.target