extdirent.h revision 302408 
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#ifndef _SYS_EXTDIRENT_H
27#define	_SYS_EXTDIRENT_H
28
29#pragma ident	"%Z%%M%	%I%	%E% SMI"
30
31#ifdef	__cplusplus
32extern "C" {
33#endif
34
35#include <sys/types.h>
36
37#if defined(_KERNEL)
38
39/*
40 * Extended file-system independent directory entry.  This style of
41 * dirent provides additional informational flag bits for each
42 * directory entry.  This dirent will be returned instead of the
43 * standard dirent if a VOP_READDIR() requests dirent flags via
44 * V_RDDIR_ENTFLAGS, and if the file system supports the flags.
45 */
46typedef struct edirent {
47	ino64_t		ed_ino;		/* "inode number" of entry */
48	off64_t		ed_off;		/* offset of disk directory entry */
49	uint32_t	ed_eflags;	/* per-entry flags */
50	unsigned short	ed_reclen;	/* length of this record */
51	char		ed_name[1];	/* name of file */
52} edirent_t;
53
54#define	EDIRENT_RECLEN(namelen)	\
55	((offsetof(edirent_t, ed_name[0]) + 1 + (namelen) + 7) & ~ 7)
56#define	EDIRENT_NAMELEN(reclen)	\
57	((reclen) - (offsetof(edirent_t, ed_name[0])))
58
59/*
60 * Extended entry flags
61 *	Extended entries include a bitfield of extra information
62 *	regarding that entry.
63 */
64#define	ED_CASE_CONFLICT  0x10  /* Disconsidering case, entry is not unique */
65
66/*
67 * Extended flags accessor function
68 */
69#define	ED_CASE_CONFLICTS(x)	((x)->ed_eflags & ED_CASE_CONFLICT)
70
71#endif /* defined(_KERNEL) */
72
73#ifdef	__cplusplus
74}
75#endif
76
77#endif	/* _SYS_EXTDIRENT_H */
78