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/* 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 <http://www.gnu.org/licenses/>. */
/* Written by Jim Meyering. */
/* Modified for gawk */
#include <config.h>
#ifndef ENOTSUP
# define ENOTSUP ENOSYS
#endif
/*
* This is for fake directory file descriptors on systems that don't
* allow to open() a directory.
*
* It would be nice if this could be shared with the definition in awk.h
* in the main code base, but there's not a very clean way to do that,
* at least that I can see.
*/
#define FAKE_FD_VALUE 42
#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 */
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