dirent.h revision 2165 
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	8.1 (Berkeley) 6/2/93
34 * $Id: dirent.h,v 1.2 1994/08/02 07:52:47 davidg Exp $
35 */
36
37#ifndef _SYS_DIRENT_H_
38#define _SYS_DIRENT_H_
39
40/*
41 * The dirent structure defines the format of directory entries returned by
42 * the getdirentries(2) system call.
43 *
44 * A directory entry has a struct dirent at the front of it, containing its
45 * inode number, the length of the entry, and the length of the name
46 * contained in the entry.  These are followed by the name padded to a 4
47 * byte boundary with null bytes.  All names are guaranteed null terminated.
48 * The maximum length of a name in a directory is MAXNAMLEN.
49 */
50
51struct dirent {
52	unsigned long	d_fileno;	/* file number of entry */
53	unsigned short	d_reclen;	/* length of this record */
54	unsigned char	d_type; 	/* file type, see below */
55	unsigned char	d_namlen;	/* length of string in d_name */
56#ifdef _POSIX_SOURCE
57	char	d_name[255 + 1];	/* name must be no longer than this */
58#else
59#define	MAXNAMLEN	255
60	char	d_name[MAXNAMLEN + 1];	/* name must be no longer than this */
61#endif
62};
63
64/*
65 * File types
66 */
67#define	DT_UNKNOWN	 0
68#define	DT_FIFO		 1
69#define	DT_CHR		 2
70#define	DT_DIR		 4
71#define	DT_BLK		 6
72#define	DT_REG		 8
73#define	DT_LNK		10
74#define	DT_SOCK		12
75
76/*
77 * Convert between stat structure types and directory types.
78 */
79#define	IFTODT(mode)	(((mode) & 0170000) >> 12)
80#define	DTTOIF(dirtype)	((dirtype) << 12)
81
82#endif
83