| /* Copyright (C) 1993-2016 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/>. */ |
| |
| #ifndef _DIRSTREAM_H |
| #define _DIRSTREAM_H 1 |
| |
| #include <sys/types.h> |
| |
| #include <libc-lock.h> |
| |
| /* Directory stream type. |
| |
| The miscellaneous Unix `readdir' implementations read directory data |
| into a buffer and return `struct dirent *' pointers into it. */ |
| |
| struct __dirstream |
| { |
| int fd; /* File descriptor. */ |
| |
| __libc_lock_define (, lock) /* Mutex lock for this structure. */ |
| |
| size_t allocation; /* Space allocated for the block. */ |
| size_t size; /* Total valid data in the block. */ |
| size_t offset; /* Current offset into the block. */ |
| |
| off_t filepos; /* Position of next entry to read. */ |
| |
| int errcode; /* Delayed error code. */ |
| |
| /* Directory block. We must make sure that this block starts |
| at an address that is aligned adequately enough to store |
| dirent entries. Using the alignment of "void *" is not |
| sufficient because dirents on 32-bit platforms can require |
| 64-bit alignment. We use "long double" here to be consistent |
| with what malloc uses. */ |
| char data[0] __attribute__ ((aligned (__alignof__ (long double)))); |
| }; |
| |
| #define _DIR_dirfd(dirp) ((dirp)->fd) |
| |
| #endif /* dirstream.h */ |