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 #ifdef	__cplusplus
30 extern "C" {
31 #endif
32 
33 #include <sys/types.h>
34 #include <sys/dirent.h>
35 
36 /*
37  * Extended file-system independent directory entry.  This style of
38  * dirent provides additional informational flag bits for each
39  * directory entry.  This dirent will be returned instead of the
40  * standard dirent if a VOP_READDIR() requests dirent flags via
41  * V_RDDIR_ENTFLAGS, and if the file system supports the flags.
42  */
43 typedef struct edirent {
44 	ino64_t		ed_ino;		/* "inode number" of entry */
45 	off64_t		ed_off;		/* offset of disk directory entry */
46 	uint32_t	ed_eflags;	/* per-entry flags */
47 	unsigned short	ed_reclen;	/* length of this record */
48 	char		ed_name[1];	/* name of file */
49 } edirent_t;
50 
51 #define	EDIRENT_RECLEN(namelen)	\
52 	((offsetof(edirent_t, ed_name[0]) + 1 + (namelen) + 7) & ~ 7)
53 #define	EDIRENT_NAMELEN(reclen)	\
54 	((reclen) - (offsetof(edirent_t, ed_name[0])))
55 
56 /*
57  * Extended entry flags
58  *	Extended entries include a bitfield of extra information
59  *	regarding that entry.
60  */
61 #define	ED_CASE_CONFLICT  0x10  /* Disconsidering case, entry is not unique */
62 
63 /*
64  * Extended flags accessor function
65  */
66 #define	ED_CASE_CONFLICTS(x)	((x)->ed_eflags & ED_CASE_CONFLICT)
67 #ifdef	__cplusplus
68 }
69 #endif
70 
71 #endif	/* _SYS_EXTDIRENT_H */
72