| /* dirfd -- Return the file descriptor used by a DIR stream. Hurd version. |
| Copyright (C) 1995-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <dirent.h> |
| #include <dirstream.h> |
| #include <hurd/fd.h> |
| #include <errno.h> |
| |
| int |
| dirfd (DIR *dirp) |
| { |
| int fd; |
| |
| HURD_CRITICAL_BEGIN; |
| __mutex_lock (&_hurd_dtable_lock); |
| for (fd = 0; fd < _hurd_dtablesize; ++fd) |
| if (_hurd_dtable[fd] == dirp->__fd) |
| break; |
| if (fd == _hurd_dtablesize) |
| { |
| errno = EINVAL; |
| fd = -1; |
| } |
| __mutex_unlock (&_hurd_dtable_lock); |
| HURD_CRITICAL_END; |
| |
| return fd; |
| } |
