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+/* Copyright (C) 1993, 1995, 1996, 2007 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 <bits/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. */
+
+ /* Directory block. */
+ char data[0] __attribute__ ((aligned (__alignof__ (void*))));
+ };
+
+#define _DIR_dirfd(dirp) ((dirp)->fd)
+
+#endif /* dirstream.h */