1/*	$NetBSD: extdirent.h,v 1.1 2019/06/24 08:27:20 hannken Exp $	*/
2
3/*
4 * CDDL HEADER START
5 *
6 * The contents of this file are subject to the terms of the
7 * Common Development and Distribution License (the "License").
8 * You may not use this file except in compliance with the License.
9 *
10 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
11 * or http://www.opensolaris.org/os/licensing.
12 * See the License for the specific language governing permissions
13 * and limitations under the License.
14 *
15 * When distributing Covered Code, include this CDDL HEADER in each
16 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
17 * If applicable, add the following below this CDDL HEADER, with the
18 * fields enclosed by brackets "[]" replaced with your own identifying
19 * information: Portions Copyright [yyyy] [name of copyright owner]
20 *
21 * CDDL HEADER END
22 */
23/*
24 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
25 * Use is subject to license terms.
26 */
27
28#ifndef _SYS_EXTDIRENT_H
29#define	_SYS_EXTDIRENT_H
30
31#pragma ident	"%Z%%M%	%I%	%E% SMI"
32
33#ifdef	__cplusplus
34extern "C" {
35#endif
36
37#include <sys/types.h>
38
39#if defined(_KERNEL)
40
41/*
42 * Extended file-system independent directory entry.  This style of
43 * dirent provides additional informational flag bits for each
44 * directory entry.  This dirent will be returned instead of the
45 * standard dirent if a VOP_READDIR() requests dirent flags via
46 * V_RDDIR_ENTFLAGS, and if the file system supports the flags.
47 */
48typedef struct edirent {
49	ino64_t		ed_ino;		/* "inode number" of entry */
50	off64_t		ed_off;		/* offset of disk directory entry */
51	uint32_t	ed_eflags;	/* per-entry flags */
52	unsigned short	ed_reclen;	/* length of this record */
53	char		ed_name[1];	/* name of file */
54} edirent_t;
55
56#define	EDIRENT_RECLEN(namelen)	\
57	((offsetof(edirent_t, ed_name[0]) + 1 + (namelen) + 7) & ~ 7)
58#define	EDIRENT_NAMELEN(reclen)	\
59	((reclen) - (offsetof(edirent_t, ed_name[0])))
60
61/*
62 * Extended entry flags
63 *	Extended entries include a bitfield of extra information
64 *	regarding that entry.
65 */
66#define	ED_CASE_CONFLICT  0x10  /* Disconsidering case, entry is not unique */
67
68/*
69 * Extended flags accessor function
70 */
71#define	ED_CASE_CONFLICTS(x)	((x)->ed_eflags & ED_CASE_CONFLICT)
72
73#endif /* defined(_KERNEL) */
74
75#ifdef	__cplusplus
76}
77#endif
78
79#endif	/* _SYS_EXTDIRENT_H */
80