Change the kernel dev_t, representing a pointer to a specinfo structure,
[dragonfly.git] / sys / vfs / gnu / ext2fs / ext2mount.h
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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. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)ufsmount.h 8.6 (Berkeley) 3/30/95
34 * $FreeBSD: src/sys/ufs/ufs/ufsmount.h,v 1.17 1999/12/29 04:55:06 peter Exp $
b13267a5 35 * $DragonFly: src/sys/vfs/gnu/ext2fs/ext2mount.h,v 1.4 2006/09/10 01:26:40 dillon Exp $
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36 */
37
38#ifndef _VFS_GNU_EXT2FS_EXT2MOUNT_H_
39#define _VFS_GNU_EXT2FS_EXT2MOUNT_H_
40
41/*
42 * Arguments to mount UFS-based filesystems
43 */
44struct ext2_args {
45 char *fspec; /* block special device to mount */
46 struct export_args export; /* network export information */
47};
48
49/*
50 * Arguments to mount MFS
51 */
52struct mfs_args {
53 char *fspec; /* name to export for statfs */
54 struct export_args export; /* if exported MFSes are supported */
55 caddr_t base; /* base of filesystem in memory */
56 u_long size; /* size of filesystem */
57};
58
59#ifdef _KERNEL
60
61#ifdef MALLOC_DECLARE
62MALLOC_DECLARE(M_EXT2MNT);
63#endif
64
65struct buf;
66struct inode;
67struct timeval;
68struct ucred;
69struct uio;
70struct vnode;
71struct netexport;
72
73/* This structure describes the UFS specific mount structure data. */
74struct ext2mount {
75 struct mount *um_mountp; /* filesystem vfs structure */
b13267a5 76 cdev_t um_dev; /* device mounted */
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77 struct vnode *um_devvp; /* block device mounted vnode */
78
79 struct ext2_sb_info *um_e2fs;
80 struct vnode *um_quotas[MAXQUOTAS]; /* pointer to quota files */
81 struct ucred *um_cred[MAXQUOTAS]; /* quota file access cred */
82 u_long um_nindir; /* indirect ptrs per block */
83 u_long um_bptrtodb; /* indir ptr to disk block */
84 u_long um_seqinc; /* inc between seq blocks */
85 time_t um_btime[MAXQUOTAS]; /* block quota time limit */
86 time_t um_itime[MAXQUOTAS]; /* inode quota time limit */
87 char um_qflags[MAXQUOTAS]; /* quota specific flags */
88 struct netexport um_export; /* export information */
89 int64_t um_savedmaxfilesize; /* XXX - limit maxfilesize */
90 struct malloc_type *um_malloctype; /* The inodes malloctype */
91 int um_i_effnlink_valid; /* i_effnlink valid? */
92 int (*um_blkatoff) (struct vnode *, off_t, char **, struct buf **);
87de5057 93 int (*um_truncate) (struct vnode *, off_t, int, struct ucred *);
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94 int (*um_update) (struct vnode *, int);
95 int (*um_valloc) (struct vnode *, int, struct ucred *, struct vnode **);
96 int (*um_vfree) (struct vnode *, ino_t, int);
97};
98
99#define um_e2fsb um_e2fs->s_es
100
101#define EXT2_BLKATOFF(aa, bb, cc, dd) VFSTOEXT2((aa)->v_mount)->um_blkatoff(aa, bb, cc, dd)
87de5057 102#define EXT2_TRUNCATE(aa, bb, cc, dd) VFSTOEXT2((aa)->v_mount)->um_truncate(aa, bb, cc, dd)
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103#define EXT2_UPDATE(aa, bb) VFSTOEXT2((aa)->v_mount)->um_update(aa, bb)
104#define EXT2_VALLOC(aa, bb, cc, dd) VFSTOEXT2((aa)->v_mount)->um_valloc(aa, bb, cc, dd)
105#define EXT2_VFREE(aa, bb, cc) VFSTOEXT2((aa)->v_mount)->um_vfree(aa, bb, cc)
106
107/*
108 * Flags describing the state of quotas.
109 */
110#define QTF_OPENING 0x01 /* Q_QUOTAON in progress */
111#define QTF_CLOSING 0x02 /* Q_QUOTAOFF in progress */
112
113/* Convert mount ptr to ext2mount ptr. */
114#define VFSTOEXT2(mp) ((struct ext2mount *)((mp)->mnt_data))
115
116/*
117 * Macros to access filesystem parameters in the ext2mount structure.
93f50d60 118 * Used by ext2_bmap.
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119 */
120#define MNINDIR(ump) ((ump)->um_nindir)
121#define blkptrtodb(ump, b) ((b) << (ump)->um_bptrtodb)
122#define is_sequential(ump, a, b) ((b) == (a) + ump->um_seqinc)
123#endif /* _KERNEL */
124
125#endif /* !_VFS_GNU_EXT2FS_EXT2MOUNT_H_ */