_PATH_DEV_LOCKSTAT
if ((lsfd = open(_PATH_DEV_LOCKSTAT, O_RDONLY)) < 0)
err(EXIT_FAILURE, "cannot open " _PATH_DEV_LOCKSTAT);
err(EXIT_FAILURE, "reading from " _PATH_DEV_LOCKSTAT);
err(EXIT_FAILURE, "close(" _PATH_DEV_LOCKSTAT ")");