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      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
     34 extern "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  */
     48 typedef 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