extern int udev_device_set_subsystem(struct udev_device *udev_device, const char *subsystem);
extern int udev_device_set_devnode(struct udev_device *udev_device, const char *devnode);
extern int udev_device_add_devlink(struct udev_device *udev_device, const char *devlink);
extern int udev_device_set_subsystem(struct udev_device *udev_device, const char *subsystem);
extern int udev_device_set_devnode(struct udev_device *udev_device, const char *devnode);
extern int udev_device_add_devlink(struct udev_device *udev_device, const char *devlink);