71 lines
2.7 KiB
C
71 lines
2.7 KiB
C
/*
|
|
* Copyright (c) 1982, 1986, 1989, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* 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.
|
|
* 4. 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.
|
|
*
|
|
* @(#)ufsmount.h 8.6 (Berkeley) 3/30/95
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _SYS_GNU_EXT2FS_EXT2_MOUNT_H_
|
|
#define _SYS_GNU_EXT2FS_EXT2_MOUNT_H_
|
|
|
|
#ifdef _KERNEL
|
|
|
|
#ifdef MALLOC_DECLARE
|
|
MALLOC_DECLARE(M_EXT2NODE);
|
|
#endif
|
|
|
|
struct vnode;
|
|
|
|
/* This structure describes the ext2fs specific mount structure data. */
|
|
struct ext2mount {
|
|
struct mount *um_mountp; /* filesystem vfs structure */
|
|
struct cdev *um_dev; /* device mounted */
|
|
struct vnode *um_devvp; /* block device mounted vnode */
|
|
|
|
struct ext2_sb_info *um_e2fs; /* EXT2FS */
|
|
#define em_e2fsb um_e2fs->s_es
|
|
|
|
u_long um_nindir; /* indirect ptrs per block */
|
|
u_long um_bptrtodb; /* indir ptr to disk block */
|
|
u_long um_seqinc; /* inc between seq blocks */
|
|
};
|
|
|
|
/* Convert mount ptr to ext2fsmount ptr. */
|
|
#define VFSTOEXT2(mp) ((struct ext2mount *)((mp)->mnt_data))
|
|
|
|
/*
|
|
* Macros to access file system parameters in the ufsmount structure.
|
|
* Used by ufs_bmap.
|
|
*/
|
|
#define MNINDIR(ump) ((ump)->um_nindir)
|
|
#define blkptrtodb(ump, b) ((b) << (ump)->um_bptrtodb)
|
|
#define is_sequential(ump, a, b) ((b) == (a) + ump->um_seqinc)
|
|
#endif /* _KERNEL */
|
|
|
|
#endif
|