xref: /src/sys/ufs/lfs/ulfs_inode.h

/*	$NetBSD: ulfs_inode.h,v 1.6 2013/06/08 02:04:31 dholland Exp $	*/
/*  from NetBSD: inode.h,v 1.64 2012/11/19 00:36:21 jakllsch Exp  */

/*
 * Copyright (c) 1982, 1989, 1993
 *	The Regents of the University of California.  All rights reserved.
 * (c) UNIX System Laboratories, Inc.
 * All or some portions of this file are derived from material licensed
 * to the University of California by American Telephone and Telegraph
 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
 * the permission of UNIX System Laboratories, Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)inode.h	8.9 (Berkeley) 5/14/95
 */

#ifndef _UFS_LFS_ULFS_INODE_H_
#define	_UFS_LFS_ULFS_INODE_H_

#include <sys/vnode.h>
#include <ufs/lfs/lfs_inode.h>
#include <ufs/lfs/ulfs_dinode.h>
#include <ufs/lfs/ulfs_dir.h>
#include <ufs/lfs/ulfs_quotacommon.h>

#if defined(_KERNEL)

/*
 * The DIP macro is used to access fields in the dinode that are
 * not cached in the inode itself.
 */
#define	DIP(ip, field) \
	(((ip)->i_ump->um_fstype == ULFS1) ? \
	(ip)->i_ffs1_##field : (ip)->i_ffs2_##field)

#define	DIP_ASSIGN(ip, field, value)					\
	do {								\
		if ((ip)->i_ump->um_fstype == ULFS1)			\
			(ip)->i_ffs1_##field = (value);			\
		else							\
			(ip)->i_ffs2_##field = (value);			\
	} while(0)

#define	DIP_ADD(ip, field, value)					\
	do {								\
		if ((ip)->i_ump->um_fstype == ULFS1)			\
			(ip)->i_ffs1_##field += (value);		\
		else							\
			(ip)->i_ffs2_##field += (value);		\
	} while(0)

#define	 SHORTLINK(ip) \
	(((ip)->i_ump->um_fstype == ULFS1) ? \
	(void *)(ip)->i_ffs1_db : (void *)(ip)->i_ffs2_db)


/*
 * Structure used to pass around logical block paths generated by
 * ulfs_getlbns and used by truncate and bmap code.
 */
struct indir {
	daddr_t in_lbn;		/* Logical block number. */
	int	in_off;			/* Offset in buffer. */
	int	in_exists;		/* Flag if the block exists. */
};

/* Convert between inode pointers and vnode pointers. */
#define	VTOI(vp)	((struct inode *)(vp)->v_data)
#define	ITOV(ip)	((ip)->i_vnode)

#endif /* _KERNEL */

#endif /* !_UFS_LFS_ULFS_INODE_H_ */