+ /* wake up after delay, or immediately after the queue is rebuilt */
+
+ if (exists != NULL || start > 0)
+ delay = 100;
+ else
+ delay = 1000;
+ if (poll(pfd, 1, delay) > 0 && pfd[0].revents & POLLIN) {
+ char buf[sizeof(struct inotify_event) + PATH_MAX];
+
+ read(pfd[0].fd, buf, sizeof(buf));
+ }
+ } else {
+ sleep(1);
+ }
+
+ if (timeout > 0) {
+ unsigned long long age_usec;
+
+ age_usec = now_usec() - start_usec;
+ if (age_usec / (1000 * 1000) >= timeout) {
+ struct udev_list_entry *list_entry;