- r = sd_bus_message_new_signal(bus, path, "org.freedesktop.DBus", "PropertiesChanged", &m);
+ r = node_vtable_get_userdata(bus, path, c, &u);
+ if (r <= 0)
+ return r;
+
+ r = sd_bus_message_new_signal(bus, path, "org.freedesktop.DBus.Properties", "PropertiesChanged", &m);