+extern int device_set_action(struct udev_device *udev_device, const char *action);
+extern int device_set_driver(struct udev_device *udev_device, const char *driver);
+extern const char *device_get_devpath_old(struct udev_device *udev_device);
+extern int device_set_devpath_old(struct udev_device *udev_device, const char *devpath_old);
+extern const char *device_get_physdevpath(struct udev_device *udev_device);
+extern int device_set_physdevpath(struct udev_device *udev_device, const char *physdevpath);
+extern int device_get_timeout(struct udev_device *udev_device);
+extern int device_set_timeout(struct udev_device *udev_device, int timeout);
+extern int device_set_devnum(struct udev_device *udev_device, dev_t devnum);
+extern int device_set_seqnum(struct udev_device *udev_device, unsigned long long int seqnum);
+
+/* udev_ctrl - daemon runtime setup */
+struct udev_ctrl;
+extern struct udev_ctrl *udev_ctrl_new_from_socket(struct udev *udev, const char *socket_path);
+extern int udev_ctrl_enable_receiving(struct udev_ctrl *uctrl);
+extern struct udev_ctrl *udev_ctrl_ref(struct udev_ctrl *uctrl);
+extern void udev_ctrl_unref(struct udev_ctrl *uctrl);
+extern struct udev *udev_ctrl_get_udev(struct udev_ctrl *uctrl);
+extern int udev_ctrl_get_fd(struct udev_ctrl *uctrl);
+extern int udev_ctrl_send_set_log_level(struct udev_ctrl *uctrl, int priority);
+extern int udev_ctrl_send_stop_exec_queue(struct udev_ctrl *uctrl);
+extern int udev_ctrl_send_start_exec_queue(struct udev_ctrl *uctrl);
+extern int udev_ctrl_send_reload_rules(struct udev_ctrl *uctrl);
+extern int udev_ctrl_send_set_env(struct udev_ctrl *uctrl, const char *key);
+extern int udev_ctrl_send_set_max_childs(struct udev_ctrl *uctrl, int count);
+struct udev_ctrl_msg;
+extern struct udev_ctrl_msg *udev_ctrl_msg(struct udev_ctrl *uctrl);
+extern struct udev_ctrl_msg *udev_ctrl_receive_msg(struct udev_ctrl *uctrl);
+extern struct udev_ctrl_msg *udev_ctrl_msg_ref(struct udev_ctrl_msg *ctrl_msg);
+extern void udev_ctrl_msg_unref(struct udev_ctrl_msg *ctrl_msg);
+extern int udev_ctrl_get_set_log_level(struct udev_ctrl_msg *ctrl_msg);
+extern int udev_ctrl_get_stop_exec_queue(struct udev_ctrl_msg *ctrl_msg);
+extern int udev_ctrl_get_start_exec_queue(struct udev_ctrl_msg *ctrl_msg);
+extern int udev_ctrl_get_reload_rules(struct udev_ctrl_msg *ctrl_msg);
+extern const char *udev_ctrl_get_set_env(struct udev_ctrl_msg *ctrl_msg);
+extern int udev_ctrl_get_set_max_childs(struct udev_ctrl_msg *ctrl_msg);