1 /*- 2 * Copyright (c) 1982, 1986, 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)ufsmount.h 8.6 (Berkeley) 3/30/95 30 * $FreeBSD$ 31 */ 32 33 #ifndef _FS_EXT2FS_EXT2_MOUNT_H_ 34 #define _FS_EXT2FS_EXT2_MOUNT_H_ 35 36 #ifdef _KERNEL 37 38 #ifdef MALLOC_DECLARE 39 MALLOC_DECLARE(M_EXT2NODE); 40 #endif 41 42 struct vnode; 43 44 /* This structure describes the ext2fs specific mount structure data. */ 45 struct ext2mount { 46 struct mount *um_mountp; /* filesystem vfs structure */ 47 struct cdev *um_dev; /* device mounted */ 48 struct vnode *um_devvp; /* block device mounted vnode */ 49 50 struct m_ext2fs *um_e2fs; /* EXT2FS */ 51 52 u_long um_nindir; /* indirect ptrs per block */ 53 u_long um_bptrtodb; /* indir ptr to disk block */ 54 u_long um_seqinc; /* inc between seq blocks */ 55 56 struct mtx um_lock; /* Protects ext2mount & fs */ 57 58 struct g_consumer *um_cp; 59 struct bufobj *um_bo; 60 }; 61 62 #define EXT2_LOCK(aa) mtx_lock(&(aa)->um_lock) 63 #define EXT2_UNLOCK(aa) mtx_unlock(&(aa)->um_lock) 64 #define EXT2_MTX(aa) (&(aa)->um_lock) 65 66 /* Convert mount ptr to ext2fsmount ptr. */ 67 #define VFSTOEXT2(mp) ((struct ext2mount *)((mp)->mnt_data)) 68 69 /* 70 * Macros to access file system parameters in the ufsmount structure. 71 * Used by ufs_bmap. 72 */ 73 #define MNINDIR(ump) ((ump)->um_nindir) 74 #define blkptrtodb(ump, b) ((b) << (ump)->um_bptrtodb) 75 #define is_sequential(ump, a, b) ((b) == (a) + ump->um_seqinc) 76 #endif /* _KERNEL */ 77 78 #endif /* !_FS_EXT2FS_EXT2_MOUNT_H_ */ 79