+ if ((r = socket_open_fds(s)) < 0) {
+ log_warning("%s failed to listen on sockets: %s", unit_id(UNIT(s)), strerror(-r));
+ goto fail;
+ }
+
+ if ((s->control_command = s->exec_command[SOCKET_EXEC_START_POST]))
+ if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) {
+ log_warning("%s failed to run start-post executable: %s", unit_id(UNIT(s)), strerror(-r));
+ goto fail;
+ }
+
+ socket_set_state(s, SOCKET_START_POST);
+
+ if (!s->control_command)
+ socket_enter_listening(s);
+
+ return;
+
+fail:
+ socket_enter_stop_pre(s, false);
+}
+
+static void socket_enter_start_pre(Socket *s) {
+ int r;
+ assert(s);
+
+ if ((s->control_command = s->exec_command[SOCKET_EXEC_START_PRE]))
+ if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
+ goto fail;
+
+ socket_set_state(s, SOCKET_START_PRE);
+
+ if (!s->control_command)
+ socket_enter_start_post(s);
+
+ return;
+
+fail:
+ log_warning("%s failed to run start-pre exectuable: %s", unit_id(UNIT(s)), strerror(-r));
+ socket_enter_dead(s, false);
+}
+
+static void socket_enter_running(Socket *s) {
+ int r;
+
+ assert(s);
+
+ if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s->service), JOB_REPLACE, true, NULL)) < 0)
+ goto fail;
+
+ socket_set_state(s, SOCKET_RUNNING);
+ return;
+
+fail:
+ log_warning("%s failed to queue socket startup job: %s", unit_id(UNIT(s)), strerror(-r));
+ socket_enter_dead(s, false);
+}
+
+static void socket_run_next(Socket *s, bool success) {
+ int r;
+
+ assert(s);
+ assert(s->control_command);
+ assert(s->control_command->command_next);
+
+ if (!success)
+ s->failure = true;
+
+ s->control_command = s->control_command->command_next;
+
+ if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
+ goto fail;
+
+ return;
+
+fail:
+ if (s->state == SOCKET_STOP_PRE)
+ socket_enter_stop_post(s, false);
+ else if (s->state == SOCKET_STOP_POST)
+ socket_enter_dead(s, false);
+ else
+ socket_enter_stop_pre(s, false);
+}
+
+static int socket_start(Unit *u) {
+ Socket *s = SOCKET(u);
+
+ assert(s);
+
+ /* We cannot fulfill this request right now, try again later
+ * please! */
+ if (s->state == SOCKET_STOP_PRE ||
+ s->state == SOCKET_STOP_PRE_SIGKILL ||
+ s->state == SOCKET_STOP_PRE_SIGTERM ||
+ s->state == SOCKET_STOP_POST ||
+ s->state == SOCKET_STOP_POST_SIGTERM ||
+ s->state == SOCKET_STOP_POST_SIGKILL)
+ return -EAGAIN;
+