service: make start jobs wait, not fail, when an automatic restart is queued

When an automatic restart is already queued, then make subsequent start
jobs wait until the restart can be handled (i.e. after the holdhoff
time), instead of simply fail.

1 files changed, 10 insertions, 4 deletions

diff --git a/src/core/service.c b/src/core/service.c
index 7a7e25ffcd..cf480ab979 100644
--- a/src/core/service.c
+++ b/src/core/service.c
@@ -2258,10 +2258,12 @@ static void service_enter_restart(Service *s) {
         assert(s);
         dbus_error_init(&error);
 
-        if (UNIT(s)->job) {
-                log_info("Job pending for unit, delaying automatic restart.");
+        if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) {
+                /* Don't restart things if we are going down anyway */
+                log_info("Stop job pending for unit, delaying automatic restart.");
 
-                if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
+                r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch);
+                if (r < 0)
                         goto fail;
 
                 return;
@@ -2275,6 +2277,10 @@ static void service_enter_restart(Service *s) {
         if (r < 0)
                 goto fail;
 
+        /* Note that we stay in the SERVICE_AUTO_RESTART state here,
+         * it will be canceled as part of the service_stop() call that
+         * is executed as part of JOB_RESTART. */
+
         log_debug("%s scheduled restart job.", UNIT(s)->id);
         return;
 
@@ -2473,7 +2479,7 @@ static int service_start(Unit *u) {
          * service should be manually restarted, not started. */
         if (s->state == SERVICE_AUTO_RESTART) {
                 log_warning("%s automatic restart is pending, must be stopped before issuing start request.", UNIT(s)->id);
-                return -ECANCELED;
+                return -EAGAIN;
         }
 
         assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED);