udev_monitor_receive_device
struct udev_device *udev_monitor_receive_device(struct udev_monitor *udev_monitor);
while ((udev_dev = udev_monitor_receive_device(udev_monitor))) {
while ((dev = udev_monitor_receive_device(mon)) != NULL) {
while ((udev_dev = udev_monitor_receive_device(udev_monitor))) {
if ((udev_dev = udev_monitor_receive_device(udev_monitor)) == NULL) {