minix/include/dirent.h
Ben Gras 6c8f7fc3ba netbsd dirent.h, import sys/sys *.h, mfs cleanup
. add all sys/sys headers not already present to help compiling
	. take netbsd dirent.h and struct dirent; main result is
	  introducing d_type and d_namlen that have to be set by getdents()
	  in all FS code implementing it
	. d_off is gone
	. alignment of the struct has become 8 bytes instead of 4
	. remove _MAX_BLOCK_SIZE, _MIN_BLOCK_SIZE, _STATIC_BLOCK_SIZE
	. libminlib: cleanup unused yet duplicate code
	. mfs: throw out the long-broken v1, v2 support
	. new test for dirent contents filled by getdents()

Change-Id: I1459755c7ba5e5d1c9396d3a587ce6e63ddc283e
2014-03-01 09:04:59 +01:00

122 lines
4.2 KiB
C

/* $NetBSD: dirent.h,v 1.35 2012/07/30 23:11:13 yamt Exp $ */
/*-
* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)dirent.h 8.2 (Berkeley) 7/28/94
*/
#ifndef _DIRENT_H_
#define _DIRENT_H_
#include <sys/featuretest.h>
#include <sys/types.h>
/*
* The kernel defines the format of directory entries returned by
* the getdents(2) system call.
*/
#include <sys/dirent.h>
#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
#define d_ino d_fileno /* backward compatibility */
#endif
typedef struct _dirdesc DIR;
#if defined(_NETBSD_SOURCE)
/* definitions for library routines operating on directories. */
#define DIRBLKSIZ 1024
/* structure describing an open directory. */
struct _dirdesc {
/*
* dd_fd should be kept intact to preserve ABI compat. see dirfd().
*/
int dd_fd; /* file descriptor associated with directory */
/*
* the rest is hidden from user.
*/
long dd_loc; /* offset in current buffer */
long dd_size; /* amount of data returned by getdents */
char *dd_buf; /* data buffer */
int dd_len; /* size of data buffer */
off_t dd_seek; /* magic cookie returned by getdents */
void *dd_internal; /* state for seekdir/telldir */
int dd_flags; /* flags for readdir */
void *dd_lock; /* lock for concurrent access */
};
#define dirfd(dirp) ((dirp)->dd_fd)
/* flags for __opendir2() */
#define DTF_HIDEW 0x0001 /* hide whiteout entries */
#define DTF_NODUP 0x0002 /* don't return duplicate names */
#define DTF_REWIND 0x0004 /* rewind after reading union stack */
#define __DTF_READALL 0x0008 /* everything has been read */
#define __DTF_RETRY_ON_BADCOOKIE 0x0001 /* retry on EINVAL
(only valid with __DTF_READALL) */
#include <sys/null.h>
#endif
#ifndef _KERNEL
#include <sys/cdefs.h>
__BEGIN_DECLS
int closedir(DIR *);
void rewinddir(DIR *);
#ifndef __LIBC12_SOURCE__
DIR *opendir(const char *) __RENAME(__opendir30);
struct dirent *readdir(DIR *) __RENAME(__readdir30);
int readdir_r(DIR * __restrict, struct dirent * __restrict,
struct dirent ** __restrict) __RENAME(__readdir_r30);
#endif
#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
void seekdir(DIR *, long);
long telldir(DIR *);
#endif /* defined(_NETBSD_SOURCE) || defined(_XOPEN_SOURCE) */
#if defined(_NETBSD_SOURCE)
#ifndef __LIBC12_SOURCE__
DIR *fdopendir(int);
DIR *__opendir2(const char *, int) __RENAME(__opendir230);
int scandir(const char *, struct dirent ***,
int (*)(const struct dirent *), int (*)(const void *, const void *))
__RENAME(__scandir30);
int getdents(int, char *, size_t) __RENAME(__getdents30);
int alphasort(const void *, const void *) __RENAME(__alphasort30);
#endif
#endif /* defined(_NETBSD_SOURCE) */
__END_DECLS
#endif /* !_KERNEL */
#endif /* !_DIRENT_H_ */