timesyncd: check return of setting IP_TOS

Fonud by Coverity. Fixes CID #1237534.

diff --git a/src/timesync/timesyncd-manager.c b/src/timesync/timesyncd-manager.c
index a5678ccaed5ede60adadeeb5cb3132d916c1a809..46f8bd6d81367d1e3aaacbb98fa2bdc45b4a895d 100644 (file)
--- a/src/timesync/timesyncd-manager.c
+++ b/src/timesync/timesyncd-manager.c
@@ -721,7 +721,9 @@ static int manager_listen_setup(Manager *m) {
         if (r < 0)
                 return -errno;
 
-        setsockopt(m->server_socket, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
+        r = setsockopt(m->server_socket, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
+        if (r < 0)
+                return -errno;
 
         return sd_event_add_io(m->event, &m->event_receive, m->server_socket, EPOLLIN, manager_receive_response, m);
 }