In a normal running system, non-passive targets and units used during
early bootup are always started. So refusing "manual start" for them
doesn't make any difference, because a "start" command doesn't cause
any action.
In early boot however, the administrator might want to start on
of those targets or services by hand. We shouldn't interfere with that.
Note: in case of systemd-tmpfiles-setup.service, really running the
unit after system is up would break the system. So e.g. restarting
should not be allowed. The unit has "RefuseManualStop=yes", which
prevents restart too.
Requires=sysinit.target
Wants=sockets.target timers.target paths.target slices.target
After=sysinit.target sockets.target timers.target paths.target slices.target
-RefuseManualStart=yes
Conflicts=emergency.service emergency.target
Wants=local-fs.target swap.target
After=local-fs.target swap.target emergency.service emergency.target
-RefuseManualStart=yes
Conflicts=shutdown.target
After=systemd-readahead-collect.service systemd-readahead-replay.service local-fs.target systemd-sysusers.service
Before=sysinit.target shutdown.target
-RefuseManualStart=yes
RefuseManualStop=yes
[Service]
Documentation=man:systemd.special(7)
Wants=sockets.target timers.target paths.target
After=sockets.target timers.target paths.target
-RefuseManualStart=yes