_PATH_NFSLCKDEV
devfd = open(_PATH_DEV _PATH_NFSLCKDEV, O_RDWR | O_NONBLOCK);
syslog(LOG_ERR, "open: %s: %m", _PATH_NFSLCKDEV);
syslog(LOG_ERR, "read: %s: %m", _PATH_NFSLCKDEV);
"%s: discard %d bytes", _PATH_NFSLCKDEV, nr);