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/* Copyright (C) 1991, 1992 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, 1992 Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
/*
* POSIX Standard: 5.1.2 Directory Operations <dirent.h>
*/
#ifndef _DIRENT_H
#define _DIRENT_H 1
#include <features.h>
__BEGIN_DECLS
#include <gnu/types.h>
#define __need_size_t
#include <stddef.h>
#include <sys/types.h>
#include <linux/limits.h>
#include <linux/dirent.h>
#if defined(__USE_GNU)
#define d_fileno d_ino /* glibc compatibility. */
#if 0
#define d_namlen d_reclen /* glibc compatibility. */
#endif
#endif
#if defined(DIRENT_ILLEGAL_ACCESS) || \
(defined(__SVR4_I386_ABI_L1__) && !defined(INTERNAL_LINUX_C_LIB))
/* Use it at your own risk. */
typedef struct DIR
{
/* file descriptor */
int dd_fd;
/* offset of the next dir entry in buffer */
off_t dd_loc;
/* bytes of valid entries in buffer */
size_t dd_size;
/* -> directory buffer */
struct dirent *dd_buf;
} DIR;
#else
/* The internal is hidden from the user. */
typedef struct DIR DIR;
#endif
/* Open a directory stream on NAME.
Return a DIR stream on the directory, or NULL if it could not be opened. */
extern DIR *opendir __P ((__const char *__name));
/* Close the directory stream DIRP.
Return 0 if successful, -1 if not. */
extern int closedir __P ((DIR * __dirp));
/* Read a directory entry from DIRP.
Return a pointer to a `struct dirent' describing the entry,
or NULL for EOF or error. The storage returned may be overwritten
by a later readdir call on the same DIR stream. */
extern struct dirent *readdir __P ((DIR * __dirp));
/* Rewind DIRP to the beginning of the directory. */
extern void rewinddir __P ((DIR * __dirp));
#if defined(__USE_BSD) || defined(__USE_MISC)
#ifndef MAXNAMLEN
/* Get the definitions of the POSIX.1 limits. */
#include <posix1_lim.h>
/* `MAXNAMLEN' is the BSD name for what POSIX calls `NAME_MAX'. */
#ifdef NAME_MAX
#define MAXNAMLEN NAME_MAX
#else
#define MAXNAMLEN 255
#endif
#endif
#include <gnu/types.h>
/* Seek to position POS on DIRP. */
extern void seekdir __P ((DIR * __dirp, __off_t __pos));
/* Return the current position of DIRP. */
extern __off_t telldir __P ((DIR * __dirp));
typedef int (*__dir_select_fn_t) __P ((__const struct dirent *));
typedef int (*__dir_compar_fn_t) __P ((
__const struct dirent * __const *,
__const struct dirent * __const *
));
/* Scan the directory DIR, calling SELECT on each directory entry.
Entries for which SELECT returns nonzero are individually malloc'd,
sorted using qsort with CMP, and collected in a malloc'd array in
*NAMELIST. Returns the number of entries selected, or -1 on error. */
extern int scandir __P ((__const char *__dir,
struct dirent ***__namelist,
__dir_select_fn_t __dir_select_fn,
__dir_compar_fn_t __dir_compar_fn));
/* Function to compare two `struct dirent's alphabetically. */
extern int alphasort __P ((
__const struct dirent * __const *,
__const struct dirent * __const *
));
/* Read directory entries from FD into BUF, reading at most NBYTES.
Reading starts at offset *BASEP, and *BASEP is updated with the new
position after reading. Returns the number of bytes read; zero when at
end of directory; or -1 for errors. */
extern __ssize_t __getdirentries __P ((int __fd, char *__buf,
size_t __nbytes, __off_t *__basep));
extern __ssize_t getdirentries __P ((int __fd, char *__buf,
size_t __nbytes, __off_t *__basep));
extern int dirfd __P ((DIR *__dirp));
#endif /* Use BSD or misc. */
#if defined(_POSIX_THREAD_SAFE_FUNCTIONS) || defined(_REENTRANT)
extern int readdir_r __P((DIR *__dirp, struct dirent *__entry,
struct dirent **__result));
#endif
__END_DECLS
#endif /* dirent.h */
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