_PATH_DEVNULL
new_fd = open (_PATH_DEVNULL, O_RDWR);
if ((i = open(_PATH_DEVNULL, O_RDWR)) >= 0) {
dupfd = open(_PATH_DEVNULL, O_RDONLY);
varpd_fatal("failed to open %s: %s", _PATH_DEVNULL,
if ((nfd = open(_PATH_DEVNULL, O_RDONLY)) < 0) {
dupfd = open(_PATH_DEVNULL, O_RDONLY);
err(EXIT_FAILURE, "failed to open %s", _PATH_DEVNULL);