1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1982, 1986, 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)ufsmount.h 8.6 (Berkeley) 3/30/95 32 */ 33 34 #ifndef _FS_EXT2FS_EXT2_MOUNT_H_ 35 #define _FS_EXT2FS_EXT2_MOUNT_H_ 36 37 #ifdef _KERNEL 38 39 #ifdef MALLOC_DECLARE 40 MALLOC_DECLARE(M_EXT2NODE); 41 #endif 42 43 struct vnode; 44 45 /* This structure describes the ext2fs specific mount structure data. */ 46 struct ext2mount { 47 struct mount *um_mountp; /* filesystem vfs structure */ 48 struct cdev *um_dev; /* device mounted */ 49 struct vnode *um_devvp; /* block device mounted vnode */ 50 51 struct m_ext2fs *um_e2fs; /* EXT2FS */ 52 53 u_long um_nindir; /* indirect ptrs per block */ 54 u_long um_bptrtodb; /* indir ptr to disk block */ 55 u_long um_seqinc; /* inc between seq blocks */ 56 57 struct mtx um_lock; /* Protects ext2mount & fs */ 58 59 struct g_consumer *um_cp; 60 struct bufobj *um_bo; 61 }; 62 63 #define EXT2_LOCK(aa) mtx_lock(&(aa)->um_lock) 64 #define EXT2_UNLOCK(aa) mtx_unlock(&(aa)->um_lock) 65 #define EXT2_MTX(aa) (&(aa)->um_lock) 66 67 /* Convert mount ptr to ext2fsmount ptr. */ 68 #define VFSTOEXT2(mp) ((struct ext2mount *)((mp)->mnt_data)) 69 70 /* 71 * Macros to access file system parameters in the ufsmount structure. 72 * Used by ufs_bmap. 73 */ 74 #define MNINDIR(ump) ((ump)->um_nindir) 75 #define blkptrtodb(ump, b) ((b) << (ump)->um_bptrtodb) 76 #define is_sequential(ump, a, b) ((b) == (a) + ump->um_seqinc) 77 #endif /* _KERNEL */ 78 79 #endif /* !_FS_EXT2FS_EXT2_MOUNT_H_ */ 80