Change the kernel dev_t, representing a pointer to a specinfo structure,
[dragonfly.git] / sys / vfs / ufs / ufsmount.h
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f719c866 1/*-
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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/ufs/ufsmount.h,v 1.10 2006/09/10 01:26:41 dillon Exp $
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36 */
37
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38#ifndef _VFS_UFS_UFSMOUNT_H_
39#define _VFS_UFS_UFSMOUNT_H_
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40
41/*
42 * Arguments to mount UFS-based filesystems
43 */
44struct ufs_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 */
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55 caddr_t base; /* base of filesystem in memory */
56 u_long size; /* size of filesystem */
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57};
58
59#ifdef _KERNEL
60
61#ifdef MALLOC_DECLARE
62MALLOC_DECLARE(M_UFSMNT);
63#endif
64
65struct buf;
66struct inode;
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67struct timeval;
68struct ucred;
69struct uio;
70struct vnode;
71struct netexport;
72
73/* This structure describes the UFS specific mount structure data. */
74struct ufsmount {
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 union { /* pointer to superblock */
80 struct fs *fs; /* FFS */
81 struct ext2_sb_info *e2fs; /* EXT2FS */
82 } ufsmount_u;
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83# define um_fs ufsmount_u.fs
84# define um_e2fs ufsmount_u.e2fs
85# define um_e2fsb ufsmount_u.e2fs->s_es
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86 struct vnode *um_quotas[MAXQUOTAS]; /* pointer to quota files */
87 struct ucred *um_cred[MAXQUOTAS]; /* quota file access cred */
88 u_long um_nindir; /* indirect ptrs per block */
89 u_long um_bptrtodb; /* indir ptr to disk block */
90 u_long um_seqinc; /* inc between seq blocks */
91 time_t um_btime[MAXQUOTAS]; /* block quota time limit */
92 time_t um_itime[MAXQUOTAS]; /* inode quota time limit */
93 char um_qflags[MAXQUOTAS]; /* quota specific flags */
94 struct netexport um_export; /* export information */
95 int64_t um_savedmaxfilesize; /* XXX - limit maxfilesize */
96 struct malloc_type *um_malloctype; /* The inodes malloctype */
97 int um_i_effnlink_valid; /* i_effnlink valid? */
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98};
99
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100/*
101 * Flags describing the state of quotas.
102 */
103#define QTF_OPENING 0x01 /* Q_QUOTAON in progress */
104#define QTF_CLOSING 0x02 /* Q_QUOTAOFF in progress */
105
106/* Convert mount ptr to ufsmount ptr. */
107#define VFSTOUFS(mp) ((struct ufsmount *)((mp)->mnt_data))
108
109/*
f719c866 110 * Macros to access filesystem parameters in the ufsmount structure.
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111 * Used by ufs_bmap.
112 */
113#define MNINDIR(ump) ((ump)->um_nindir)
114#define blkptrtodb(ump, b) ((b) << (ump)->um_bptrtodb)
115#define is_sequential(ump, a, b) ((b) == (a) + ump->um_seqinc)
116#endif /* _KERNEL */
117
50e58362 118#endif /* !_VFS_UFS_UFSMOUNT_H_ */