+ session = hashmap_get(m->sessions, id);
+
+ if (session) {
+
+ /* Session already exists, client is probably
+ * something like "su" which changes uid but
+ * is still the same audit session */
+
+ reply = dbus_message_new_method_return(message);
+ if (!reply) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ /* Create a throw-away fd */
+ if (pipe(pipe_fds) < 0) {
+ r = -errno;
+ goto fail;
+ }
+
+ close_nointr_nofail(pipe_fds[0]);
+ pipe_fds[0] = -1;
+
+ p = session_bus_path(session);
+ if (!p) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ b = dbus_message_append_args(
+ reply,
+ DBUS_TYPE_STRING, &session->id,
+ DBUS_TYPE_OBJECT_PATH, &p,
+ DBUS_TYPE_STRING, &session->user->runtime_path,
+ DBUS_TYPE_UNIX_FD, &pipe_fds[1],
+ DBUS_TYPE_INVALID);
+ free(p);
+
+ if (!b) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ close_nointr_nofail(pipe_fds[1]);
+ *_reply = reply;
+
+ return 0;
+ }
+
+ } else {
+ do {
+ free(id);
+ asprintf(&id, "c%lu", ++m->session_counter);
+
+ if (!id) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ } while (hashmap_get(m->sessions, id));