service: fix auto-restart handling in service_stop()

When service_stop() handles a service in the SERVICE_AUTO_RESTART state,
it calls service_set_state() to transition it to the SERVICE_DEAD state.
However if the service failed, it should transition it to SERVICE_FAILED
instead, which will trigger its OnFailure units. To achieve this, we now
call service_enter_dead() in place of service_set_state(), which will
transition the service to either SERVICE_DEAD or SERVICE_FAILED as is
appropriate.

Also, some misleading comments are adjusted: service_stop() is not only
called on a user request, but also during an automatic restart in order
to handle dependencies.

Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=45511

diff --git a/src/core/service.c b/src/core/service.c
index 4f0375465986680f6be34e911f7e712b327dbaed..9512e0e98d3b180cac72161a674bcc82bb11220d 100644 (file)
--- a/src/core/service.c
+++ b/src/core/service.c
@@ -2460,8 +2460,7 @@ static int service_stop(Unit *u) {
 
         assert(s);
 
-        /* This is a user request, so don't do restarts on this
-         * shutdown. */
+        /* Don't create restart jobs from here. */
         s->forbid_restart = true;
 
         /* Already on it */
@@ -2473,9 +2472,9 @@ static int service_stop(Unit *u) {
             s->state == SERVICE_FINAL_SIGKILL)
                 return 0;
 
-        /* Don't allow a restart */
+        /* A restart will be scheduled or is in progress. */
         if (s->state == SERVICE_AUTO_RESTART) {
-                service_set_state(s, SERVICE_DEAD);
+                service_enter_dead(s, SERVICE_SUCCESS, false);
                 return 0;
         }