kernel: Move GPL'd kernel files to sys/gnu to have them all in one place.
[dragonfly.git] / sys / gnu / vfs / 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 $
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35 */
36
37#ifndef _VFS_GNU_EXT2FS_EXT2MOUNT_H_
38#define _VFS_GNU_EXT2FS_EXT2MOUNT_H_
39
40/*
41 * Arguments to mount UFS-based filesystems
42 */
43struct ext2_args {
44 char *fspec; /* block special device to mount */
45 struct export_args export; /* network export information */
46};
47
48/*
49 * Arguments to mount MFS
50 */
51struct mfs_args {
52 char *fspec; /* name to export for statfs */
53 struct export_args export; /* if exported MFSes are supported */
54 caddr_t base; /* base of filesystem in memory */
55 u_long size; /* size of filesystem */
56};
57
58#ifdef _KERNEL
59
60#ifdef MALLOC_DECLARE
61MALLOC_DECLARE(M_EXT2MNT);
62#endif
63
64struct buf;
65struct inode;
66struct timeval;
67struct ucred;
68struct uio;
69struct vnode;
70struct netexport;
71
72/* This structure describes the UFS specific mount structure data. */
73struct ext2mount {
74 struct mount *um_mountp; /* filesystem vfs structure */
b13267a5 75 cdev_t um_dev; /* device mounted */
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76 struct vnode *um_devvp; /* block device mounted vnode */
77
78 struct ext2_sb_info *um_e2fs;
79 struct vnode *um_quotas[MAXQUOTAS]; /* pointer to quota files */
80 struct ucred *um_cred[MAXQUOTAS]; /* quota file access cred */
81 u_long um_nindir; /* indirect ptrs per block */
82 u_long um_bptrtodb; /* indir ptr to disk block */
83 u_long um_seqinc; /* inc between seq blocks */
84 time_t um_btime[MAXQUOTAS]; /* block quota time limit */
85 time_t um_itime[MAXQUOTAS]; /* inode quota time limit */
86 char um_qflags[MAXQUOTAS]; /* quota specific flags */
87 struct netexport um_export; /* export information */
88 int64_t um_savedmaxfilesize; /* XXX - limit maxfilesize */
89 struct malloc_type *um_malloctype; /* The inodes malloctype */
90 int um_i_effnlink_valid; /* i_effnlink valid? */
91 int (*um_blkatoff) (struct vnode *, off_t, char **, struct buf **);
87de5057 92 int (*um_truncate) (struct vnode *, off_t, int, struct ucred *);
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93 int (*um_update) (struct vnode *, int);
94 int (*um_valloc) (struct vnode *, int, struct ucred *, struct vnode **);
95 int (*um_vfree) (struct vnode *, ino_t, int);
96};
97
98#define um_e2fsb um_e2fs->s_es
99
100#define EXT2_BLKATOFF(aa, bb, cc, dd) VFSTOEXT2((aa)->v_mount)->um_blkatoff(aa, bb, cc, dd)
87de5057 101#define EXT2_TRUNCATE(aa, bb, cc, dd) VFSTOEXT2((aa)->v_mount)->um_truncate(aa, bb, cc, dd)
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102#define EXT2_UPDATE(aa, bb) VFSTOEXT2((aa)->v_mount)->um_update(aa, bb)
103#define EXT2_VALLOC(aa, bb, cc, dd) VFSTOEXT2((aa)->v_mount)->um_valloc(aa, bb, cc, dd)
104#define EXT2_VFREE(aa, bb, cc) VFSTOEXT2((aa)->v_mount)->um_vfree(aa, bb, cc)
105
106/*
107 * Flags describing the state of quotas.
108 */
109#define QTF_OPENING 0x01 /* Q_QUOTAON in progress */
110#define QTF_CLOSING 0x02 /* Q_QUOTAOFF in progress */
111
112/* Convert mount ptr to ext2mount ptr. */
113#define VFSTOEXT2(mp) ((struct ext2mount *)((mp)->mnt_data))
114
115/*
116 * Macros to access filesystem parameters in the ext2mount structure.
93f50d60 117 * Used by ext2_bmap.
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118 */
119#define MNINDIR(ump) ((ump)->um_nindir)
120#define blkptrtodb(ump, b) ((b) << (ump)->um_bptrtodb)
121#define is_sequential(ump, a, b) ((b) == (a) + ump->um_seqinc)
122#endif /* _KERNEL */
123
124#endif /* !_VFS_GNU_EXT2FS_EXT2MOUNT_H_ */