2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1982, 1986, 1989, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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
31 * @(#)ufsmount.h 8.6 (Berkeley) 3/30/95
35 #ifndef _FS_EXT2FS_EXT2_MOUNT_H_
36 #define _FS_EXT2FS_EXT2_MOUNT_H_
41 MALLOC_DECLARE(M_EXT2NODE);
46 /* This structure describes the ext2fs specific mount structure data. */
48 struct mount *um_mountp; /* filesystem vfs structure */
49 struct cdev *um_dev; /* device mounted */
50 struct vnode *um_devvp; /* block device mounted vnode */
52 struct m_ext2fs *um_e2fs; /* EXT2FS */
54 u_long um_nindir; /* indirect ptrs per block */
55 u_long um_bptrtodb; /* indir ptr to disk block */
56 u_long um_seqinc; /* inc between seq blocks */
58 struct mtx um_lock; /* Protects ext2mount & fs */
60 struct g_consumer *um_cp;
64 #define EXT2_LOCK(aa) mtx_lock(&(aa)->um_lock)
65 #define EXT2_UNLOCK(aa) mtx_unlock(&(aa)->um_lock)
66 #define EXT2_MTX(aa) (&(aa)->um_lock)
68 /* Convert mount ptr to ext2fsmount ptr. */
69 #define VFSTOEXT2(mp) ((struct ext2mount *)((mp)->mnt_data))
72 * Macros to access file system parameters in the ufsmount structure.
75 #define MNINDIR(ump) ((ump)->um_nindir)
76 #define blkptrtodb(ump, b) ((b) << (ump)->um_bptrtodb)
77 #define is_sequential(ump, a, b) ((b) == (a) + ump->um_seqinc)
80 #endif /* !_FS_EXT2FS_EXT2_MOUNT_H_ */