session server UPDATE missing error message

Author: michalvasko

compat/compat.h.in

@@ -238,7 +238,7 @@ time_t timegm(struct tm *tm);
  * @param[in] sock Socket to analyze.
  * @param[out] uid Socket owner UID.
  * @return 0 on success,
- * @return -1 on error.
+ * @return -1 on error, errno set.
  */
 int unsock_get_uid(int sock, uid_t *uid);
 

src/session_server.c

@@ -2342,6 +2342,7 @@ nc_accept_unix_session(struct nc_session *session, int sock)
     size_t buf_len = 0;
 
     if (unsock_get_uid(sock, &uid)) {
+        ERR(session, "Failed to get UID of a socket (%s).", strerror(errno));
         close(sock);
         return -1;
     }