+ /* guarantee that the udev daemon isn't pre-processing */
+ if (getuid() == 0) {
+ struct udev_ctrl *uctrl;
+
+ uctrl = udev_ctrl_new_from_socket(udev, UDEV_CTRL_SOCK_PATH);
+ if (uctrl != NULL) {
+ if (udev_ctrl_send_ping(uctrl, timeout) < 0) {
+ info(udev, "no connection to daemon\n");
+ udev_ctrl_unref(uctrl);
+ rc = 0;
+ goto out;
+ }
+ udev_ctrl_unref(uctrl);
+ }
+ }
+
+ pfd[0].events = POLLIN;
+ pfd[0].fd = inotify_init1(IN_CLOEXEC);
+ if (pfd[0].fd < 0) {
+ err(udev, "inotify_init failed: %m\n");
+ } else {
+ if (inotify_add_watch(pfd[0].fd, udev_get_run_path(udev), IN_CLOSE_WRITE) < 0) {
+ err(udev, "watching '%s' failed\n", udev_get_run_path(udev));
+ close(pfd[0].fd);
+ pfd[0].fd = -1;
+ }
+ }
+
+ for (;;) {
+ struct stat statbuf;
+ const struct timespec duration = { 1 , 0 };
+
+ if (exists != NULL && stat(exists, &statbuf) == 0) {
+ rc = 0;