+static int mount_arm_timer(Mount *m) {
+ int r;
+
+ assert(m);
+
+ if (m->timeout_usec <= 0) {
+ m->timer_event_source = sd_event_source_unref(m->timer_event_source);
+ return 0;
+ }
+
+ if (m->timer_event_source) {
+ r = sd_event_source_set_time(m->timer_event_source, now(CLOCK_MONOTONIC) + m->timeout_usec);
+ if (r < 0)
+ return r;
+
+ return sd_event_source_set_enabled(m->timer_event_source, SD_EVENT_ONESHOT);
+ }
+
+ return sd_event_add_monotonic(UNIT(m)->manager->event, now(CLOCK_MONOTONIC) + m->timeout_usec, 0, mount_dispatch_timer, m, &m->timer_event_source);
+}
+