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