-int udev_node_add(struct udev_device *dev, mode_t mode, uid_t uid, gid_t gid);
-int udev_node_remove(struct udev_device *dev);
+void udev_node_add(struct udev_device *dev, mode_t mode, uid_t uid, gid_t gid);
+void udev_node_remove(struct udev_device *dev);