udev_device_get_subsystem
udev_device_get_devlinks
udev_device_get_properties
+udev_device_get_action
+udev_device_get_driver
+udev_device_get_devnum
+udev_device_get_seqnum
udev_devices_enumerate
udev_monitor_new_from_socket
+udev_monitor_new_from_netlink
udev_monitor_enable_receiving
udev_monitor_ref
udev_monitor_unref