1/* dirfd.c -- return the file descriptor associated with an open DIR* 2 3 Copyright (C) 2001, 2006, 2008-2010 Free Software Foundation, Inc. 4 5 This program is free software: you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 3 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 17 18/* Written by Jim Meyering. */ 19 20#include <config.h> 21 22#include <dirent.h> 23#include <errno.h> 24 25int 26dirfd (DIR *dir_p) 27{ 28 int fd = DIR_TO_FD (dir_p); 29 if (fd == -1) 30 errno = ENOTSUP; 31 return fd; 32} 33