/* dirfd.c -- return the file descriptor associated with an open DIR* Copyright (C) 2001, 2006, 2008-2013 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ /* Written by Jim Meyering. */ /* Modified for gawk */ #include #ifndef ENOTSUP # define ENOTSUP ENOSYS #endif /* * This is for fake directory file descriptors on systems that don't * allow to open() a directory. * * Including a header from the main gawk source to share the definition * of FAKE_FD_VALUE is the least of all evils that I can see. * * Unlike the main gawk code base, this include is NOT dependant * upon MinGW or EMX. */ #ifndef __VMS #include "../nonposix.h" #else #include "nonposix.h" #endif #ifndef DIR_TO_FD # define DIR_TO_FD(d) (FAKE_FD_VALUE) #endif #if !defined(HAVE_DIRFD) && (!defined(HAVE_DECL_DIRFD) || HAVE_DECL_DIRFD == 0) int dirfd (DIR *dir_p) { int fd = DIR_TO_FD (dir_p); if (fd == -1) errno = ENOTSUP; return fd; } #endif /* HAVE_DIRFD */