Home | History | Annotate | Line # | Download | only in lfs
ulfs_inode.h revision 1.6 
      1 /*	$NetBSD: ulfs_inode.h,v 1.6 2013/06/08 02:04:31 dholland Exp $	*/
      2 /*  from NetBSD: inode.h,v 1.64 2012/11/19 00:36:21 jakllsch Exp  */
      3 
      4 /*
      5  * Copyright (c) 1982, 1989, 1993
      6  *	The Regents of the University of California.  All rights reserved.
      7  * (c) UNIX System Laboratories, Inc.
      8  * All or some portions of this file are derived from material licensed
      9  * to the University of California by American Telephone and Telegraph
     10  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
     11  * the permission of UNIX System Laboratories, Inc.
     12  *
     13  * Redistribution and use in source and binary forms, with or without
     14  * modification, are permitted provided that the following conditions
     15  * are met:
     16  * 1. Redistributions of source code must retain the above copyright
     17  *    notice, this list of conditions and the following disclaimer.
     18  * 2. Redistributions in binary form must reproduce the above copyright
     19  *    notice, this list of conditions and the following disclaimer in the
     20  *    documentation and/or other materials provided with the distribution.
     21  * 3. Neither the name of the University nor the names of its contributors
     22  *    may be used to endorse or promote products derived from this software
     23  *    without specific prior written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     35  * SUCH DAMAGE.
     36  *
     37  *	@(#)inode.h	8.9 (Berkeley) 5/14/95
     38  */
     39 
     40 #ifndef _UFS_LFS_ULFS_INODE_H_
     41 #define	_UFS_LFS_ULFS_INODE_H_
     42 
     43 #include <sys/vnode.h>
     44 #include <ufs/lfs/lfs_inode.h>
     45 #include <ufs/lfs/ulfs_dinode.h>
     46 #include <ufs/lfs/ulfs_dir.h>
     47 #include <ufs/lfs/ulfs_quotacommon.h>
     48 
     49 #if defined(_KERNEL)
     50 
     51 /*
     52  * The DIP macro is used to access fields in the dinode that are
     53  * not cached in the inode itself.
     54  */
     55 #define	DIP(ip, field) \
     56 	(((ip)->i_ump->um_fstype == ULFS1) ? \
     57 	(ip)->i_ffs1_##field : (ip)->i_ffs2_##field)
     58 
     59 #define	DIP_ASSIGN(ip, field, value)					\
     60 	do {								\
     61 		if ((ip)->i_ump->um_fstype == ULFS1)			\
     62 			(ip)->i_ffs1_##field = (value);			\
     63 		else							\
     64 			(ip)->i_ffs2_##field = (value);			\
     65 	} while(0)
     66 
     67 #define	DIP_ADD(ip, field, value)					\
     68 	do {								\
     69 		if ((ip)->i_ump->um_fstype == ULFS1)			\
     70 			(ip)->i_ffs1_##field += (value);		\
     71 		else							\
     72 			(ip)->i_ffs2_##field += (value);		\
     73 	} while(0)
     74 
     75 #define	 SHORTLINK(ip) \
     76 	(((ip)->i_ump->um_fstype == ULFS1) ? \
     77 	(void *)(ip)->i_ffs1_db : (void *)(ip)->i_ffs2_db)
     78 
     79 
     80 /*
     81  * Structure used to pass around logical block paths generated by
     82  * ulfs_getlbns and used by truncate and bmap code.
     83  */
     84 struct indir {
     85 	daddr_t in_lbn;		/* Logical block number. */
     86 	int	in_off;			/* Offset in buffer. */
     87 	int	in_exists;		/* Flag if the block exists. */
     88 };
     89 
     90 /* Convert between inode pointers and vnode pointers. */
     91 #define	VTOI(vp)	((struct inode *)(vp)->v_data)
     92 #define	ITOV(ip)	((ip)->i_vnode)
     93 
     94 #endif /* _KERNEL */
     95 
     96 #endif /* !_UFS_LFS_ULFS_INODE_H_ */
     97