diff options
Diffstat (limited to 'sys/fs/ext2fs/ext2_mount.h')
| -rw-r--r-- | sys/fs/ext2fs/ext2_mount.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/sys/fs/ext2fs/ext2_mount.h b/sys/fs/ext2fs/ext2_mount.h new file mode 100644 index 000000000000..59478cca10a1 --- /dev/null +++ b/sys/fs/ext2fs/ext2_mount.h @@ -0,0 +1,80 @@ +/*- + * SPDX-License-Identifier: BSD-3-Clause + * + * 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. + * 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. + * + * @(#)ufsmount.h 8.6 (Berkeley) 3/30/95 + * $FreeBSD$ + */ + +#ifndef _FS_EXT2FS_EXT2_MOUNT_H_ +#define _FS_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 m_ext2fs *um_e2fs; /* EXT2FS */ + + 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 */ + + struct mtx um_lock; /* Protects ext2mount & fs */ + + struct g_consumer *um_cp; + struct bufobj *um_bo; +}; + +#define EXT2_LOCK(aa) mtx_lock(&(aa)->um_lock) +#define EXT2_UNLOCK(aa) mtx_unlock(&(aa)->um_lock) +#define EXT2_MTX(aa) (&(aa)->um_lock) + +/* 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 /* !_FS_EXT2FS_EXT2_MOUNT_H_ */ |