+ switch (req->runlevel) {
+
+ /* we are async anyway, so just use kill for reexec/reload */
+ case 'u':
+ case 'U':
+ if (kill(1, SIGTERM) < 0)
+ log_error("kill() failed: %m");
+
+ /* The bus connection will be
+ * terminated if PID 1 is reexecuted,
+ * hence let's just exit here, and
+ * rely on that we'll be restarted on
+ * the next request */
+ s->quit = true;
+ break;
+
+ case 'q':
+ case 'Q':
+ if (kill(1, SIGHUP) < 0)
+ log_error("kill() failed: %m");
+ break;
+
+ default:
+ change_runlevel(s, req->runlevel);
+ }