units: use SuccessAction=reboot-force in systemd-reboot.service

TODO

@@ -44,12 +44,6 @@ Features:
 
 * chown() tty a service is attached to after the service goes down
 
-* replace systemd-reboot.service's ExecStart= with a single SuccessAction=
-  line, so that we don't need to fork() for executing the reboot
-  service. Similar for other services like this, such as systemd-exit.service
-  and so on. Of course, for this to work service units with no ExecYYZ= set but
-  SuccessAction= set need to be acceptable.
-
 * optionally: turn on cgroup delegation for per-session scope units
 
 * optionally, if a per-partition GPT flag is set for the root/home/… partitions

units/meson.build

@@ -97,6 +97,7 @@ units = [
          'sockets.target.wants/'],
         ['systemd-networkd.socket',             'ENABLE_NETWORKD',
          join_paths(pkgsysconfdir, 'system/sockets.target.wants/')],
+        ['systemd-reboot.service',               ''],
         ['systemd-rfkill.socket',               'ENABLE_RFKILL'],
         ['systemd-tmpfiles-clean.timer',        '',
          'timers.target.wants/'],
@@ -182,7 +183,6 @@ in_units = [
         ['systemd-quotacheck.service',           'ENABLE_QUOTACHECK'],
         ['systemd-random-seed.service',          'ENABLE_RANDOMSEED',
          'sysinit.target.wants/'],
-        ['systemd-reboot.service',               ''],
         ['systemd-remount-fs.service',           '',
          'local-fs.target.wants/'],
         ['systemd-resolved.service',             'ENABLE_RESOLVE',

units/systemd-reboot.service

@@ -13,7 +13,4 @@ Documentation=man:systemd-halt.service(8)
 DefaultDependencies=no
 Requires=shutdown.target umount.target final.target
 After=shutdown.target umount.target final.target
-
-[Service]
-Type=oneshot
-ExecStart=@SYSTEMCTL@ --force reboot
+SuccessAction=reboot-force