glibc/sysdeps/unix/bsd/dirstream.h
1995-02-18 01:27:10 +00:00

49 lines
1.6 KiB
C

/* Copyright (C) 1993, 1994 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#ifndef _DIRSTREAM_H
#define _DIRSTREAM_H 1
#define __need_size_t
#include <stddef.h>
#include <gnu/types.h> /* For __off_t. */
/* Directory stream type.
The BSD directory format is the same as `struct dirent', so `readdir'
returns a pointer into the buffer we read directory data into. */
typedef struct
{
int __fd; /* File descriptor. */
char *__data; /* Directory block. */
size_t __allocation; /* Space allocated for the block. */
size_t __offset; /* Current offset into the block. */
size_t __size; /* Total valid data in the block. */
__off_t __pos; /* Position in directory of this block. */
} DIR;
#ifdef __USE_BSD
/* Macro to return the file descriptor used for an open directory. */
#define dirfd(DIR) ((DIR)->__fd)
#endif
#endif /* dirstream.h */