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/* Copyright (C) 1993-2021 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
<https://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 */
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