dirent.h revision 23654 
1/*-
2 * Copyright (c) 1989, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 *	@(#)dirent.h	8.2 (Berkeley) 7/28/94
34 */
35
36#ifndef _DIRENT_H_
37#define _DIRENT_H_
38
39/*
40 * The kernel defines the format of directory entries returned by
41 * the getdirentries(2) system call.
42 */
43#include <sys/dirent.h>
44
45#ifdef _POSIX_SOURCE
46typedef void *	DIR;
47#else
48
49#define	d_ino		d_fileno	/* backward compatibility */
50
51/* definitions for library routines operating on directories. */
52#define	DIRBLKSIZ	1024
53
54/* structure describing an open directory. */
55typedef struct _dirdesc {
56	int	dd_fd;		/* file descriptor associated with directory */
57	long	dd_loc;		/* offset in current buffer */
58	long	dd_size;	/* amount of data returned by getdirentries */
59	char	*dd_buf;	/* data buffer */
60	int	dd_len;		/* size of data buffer */
61	long	dd_seek;	/* magic cookie returned by getdirentries */
62	long	dd_rewind;	/* magic cookie for rewinding */
63	int	dd_flags;	/* flags for readdir */
64} DIR;
65
66#define	dirfd(dirp)	((dirp)->dd_fd)
67
68/* flags for opendir2 */
69#define DTF_HIDEW	0x0001	/* hide whiteout entries */
70#define DTF_NODUP	0x0002	/* don't return duplicate names */
71#define DTF_REWIND	0x0004	/* rewind after reading union stack */
72#define __DTF_READALL	0x0008	/* everything has been read */
73
74#ifndef NULL
75#define	NULL	0
76#endif
77
78#endif /* _POSIX_SOURCE */
79
80#ifndef KERNEL
81
82#include <sys/cdefs.h>
83
84__BEGIN_DECLS
85DIR *opendir __P((const char *));
86struct dirent *readdir __P((DIR *));
87void rewinddir __P((DIR *));
88int closedir __P((DIR *));
89#ifndef _POSIX_SOURCE
90DIR *__opendir2 __P((const char *, int));
91long telldir __P((const DIR *));
92void seekdir __P((DIR *, long));
93int scandir __P((const char *, struct dirent ***,
94    int (*)(struct dirent *), int (*)(const void *, const void *)));
95int alphasort __P((const void *, const void *));
96int getdirentries __P((int, char *, int, long *));
97#endif /* not POSIX */
98__END_DECLS
99
100#endif /* !KERNEL */
101
102#endif /* !_DIRENT_H_ */
103