+ CharDriverState *s;
+ int fd;
+
+ fd = monitor_get_fd(cur_mon, fdname, errp);
+ if (fd < 0) {
+ return;
+ }
+
+ if (strcmp(protocol, "spice") == 0) {
+ if (!using_spice) {
+ error_set(errp, QERR_DEVICE_NOT_ACTIVE, "spice");
+ close(fd);
+ return;
+ }
+ skipauth = has_skipauth ? skipauth : false;
+ tls = has_tls ? tls : false;
+ if (qemu_spice_display_add_client(fd, skipauth, tls) < 0) {
+ error_setg(errp, "spice failed to add client");
+ close(fd);
+ }
+ return;
+#ifdef CONFIG_VNC
+ } else if (strcmp(protocol, "vnc") == 0) {
+ skipauth = has_skipauth ? skipauth : false;
+ vnc_display_add_client(NULL, fd, skipauth);
+ return;
+#endif
+ } else if ((s = qemu_chr_find(protocol)) != NULL) {
+ if (qemu_chr_add_client(s, fd) < 0) {
+ error_setg(errp, "failed to add client");
+ close(fd);
+ return;
+ }
+ return;
+ }
+
+ error_setg(errp, "protocol '%s' is invalid", protocol);
+ close(fd);
+}
+
+void object_add(const char *type, const char *id, const QDict *qdict,
+ Visitor *v, Error **errp)
+{
+ Object *obj;
+ const QDictEntry *e;
+ Error *local_err = NULL;
+
+ if (!object_class_by_name(type)) {
+ error_setg(errp, "invalid class name");
+ return;
+ }
+
+ obj = object_new(type);
+ if (qdict) {
+ for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) {
+ object_property_set(obj, v, e->key, &local_err);
+ if (local_err) {
+ goto out;
+ }
+ }
+ }
+
+ if (!object_dynamic_cast(obj, TYPE_USER_CREATABLE)) {
+ error_setg(&local_err, "object type '%s' isn't supported by object-add",
+ type);
+ goto out;
+ }
+
+ user_creatable_complete(obj, &local_err);
+ if (local_err) {
+ goto out;
+ }
+
+ object_property_add_child(container_get(object_get_root(), "/objects"),
+ id, obj, &local_err);
+out:
+ if (local_err) {
+ error_propagate(errp, local_err);
+ }
+ object_unref(obj);