Home | History | Annotate | Download | only in sys
      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	"@(#)extdirent.h	1.1	07/10/25 SMI"
     30 
     31 #ifdef	__cplusplus
     32 extern "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  */
     46 typedef 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