-extern void udev_watch_clear(struct udev *udev, struct udev_device *dev);
-extern void udev_watch_end(struct udev *udev, int wd);
-extern const char *udev_watch_lookup(struct udev *udev, int wd);
+extern void udev_watch_end(struct udev *udev, struct udev_device *dev);
+extern struct udev_device *udev_watch_lookup(struct udev *udev, int wd);