nullfd 78 maint/gnulib/lib/freopen.c int nullfd = open (null_device, O_RDONLY | O_CLOEXEC); nullfd 80 maint/gnulib/lib/freopen.c if (nullfd != fd) nullfd 82 maint/gnulib/lib/freopen.c if (dup2 (nullfd, fd) < 0) nullfd 84 maint/gnulib/lib/freopen.c close (nullfd);