1/* $NetBSD: ufsmount.h,v 1.43 2015/03/27 17:27:56 riastradh Exp $ */
2
3/*
4 * Copyright (c) 1982, 1986, 1989, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
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.
18 *
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
29 * SUCH DAMAGE.
30 *
31 * @(#)ufsmount.h 8.6 (Berkeley) 3/30/95
32 */
33
34#ifndef _UFS_UFS_UFSMOUNT_H_
35#define _UFS_UFS_UFSMOUNT_H_
36
37#include <sys/mount.h> /* struct export_args30 */
38
39/*
40 * Arguments to mount UFS-based filesystems
41 */
42struct ufs_args {
43 char *fspec; /* block special device to mount */
44};
45
46/*
47 * Arguments to mount MFS
48 */
49struct mfs_args {
50 char *fspec; /* name to export for statfs */
51 struct export_args30 _pad1; /* compat with old userland tools */
52 void * base; /* base of file system in memory */
53 u_long size; /* size of file system */
54};
55
56#ifdef _KERNEL
57
58#if defined(_KERNEL_OPT)
59#include "opt_ffs.h"
60#endif
61
62#include <sys/mutex.h>
63
64#include <ufs/ufs/extattr.h>
65#include <ufs/ufs/quota.h>
66
67struct buf;
68struct inode;
69struct nameidata;
70struct timeval;
71struct uio;
72struct vnode;
73
74/* This structure describes the UFS specific mount structure data. */
75struct ufsmount {
76 struct mount *um_mountp; /* filesystem vfs structure */
77 dev_t um_dev; /* device mounted */
78 struct vnode *um_devvp; /* block device mounted vnode */
79 u_long um_fstype;
80 u_int32_t um_flags; /* UFS-specific flags - see below */
81 union { /* pointer to superblock */
82 struct fs *fs; /* FFS */
83 struct lfs *lfs; /* LFS */
84 struct m_ext2fs *e2fs; /* EXT2FS */
85 struct chfs_mount *chfs; /* CHFS */
86 } ufsmount_u;
87#define um_fs ufsmount_u.fs
88#define um_lfs ufsmount_u.lfs
89#define um_e2fs ufsmount_u.e2fs
90#define um_e2fsb ufsmount_u.e2fs->s_es
91#define um_chfs ufsmount_u.chfs
92
93 /* Extended attribute information. */
94 struct ufs_extattr_per_mount um_extattr;
95
96 struct vnode *um_quotas[MAXQUOTAS]; /* pointer to quota files */
97 kauth_cred_t um_cred[MAXQUOTAS]; /* quota file access cred */
98 u_long um_nindir; /* indirect ptrs per block */
99 u_long um_lognindir; /* log2 of um_nindir */
100 u_long um_bptrtodb; /* indir ptr to disk block */
101 u_long um_seqinc; /* inc between seq blocks */
102 kmutex_t um_lock; /* lock on global data */
103 union {
104 struct um_q1 {
105 time_t q1_btime[MAXQUOTAS]; /* block quota time limit */
106 time_t q1_itime[MAXQUOTAS]; /* inode quota time limit */
107 char q1_qflags[MAXQUOTAS]; /* quota specific flags */
108 } um_q1;
109 struct um_q2 {
110 uint64_t q2_bsize; /* block size of quota file */
111 uint64_t q2_bmask; /* mask for above */
112 } um_q2;
113 } um_q;
114#define umq1_btime um_q.um_q1.q1_btime
115#define umq1_itime um_q.um_q1.q1_itime
116#define umq1_qflags um_q.um_q1.q1_qflags
117#define umq2_bsize um_q.um_q2.q2_bsize
118#define umq2_bmask um_q.um_q2.q2_bmask
119
120 void *um_oldfscompat; /* save 4.2 rotbl */
121 int um_maxsymlinklen;
122 int um_dirblksiz;
123 u_int64_t um_maxfilesize;
124 void *um_snapinfo; /* snapshot private data */
125
126 const struct ufs_ops *um_ops;
127
128 void *um_discarddata;
129};
130
131struct ufs_ops {
132 void (*uo_itimes)(struct inode *ip, const struct timespec *,
133 const struct timespec *, const struct timespec *);
134 int (*uo_update)(struct vnode *, const struct timespec *,
135 const struct timespec *, int);
136 int (*uo_truncate)(struct vnode *, off_t, int, kauth_cred_t);
137 int (*uo_balloc)(struct vnode *, off_t, int, kauth_cred_t, int,
138 struct buf **);
139 void (*uo_snapgone)(struct vnode *);
140 int (*uo_bufrd)(struct vnode *, struct uio *, int, kauth_cred_t);
141 int (*uo_bufwr)(struct vnode *, struct uio *, int, kauth_cred_t);
142};
143
144#define UFS_OPS(vp) (VFSTOUFS((vp)->v_mount)->um_ops)
145
146#define UFS_ITIMES(vp, acc, mod, cre) \
147 (*UFS_OPS(vp)->uo_itimes)(VTOI(vp), (acc), (mod), (cre))
148#define UFS_UPDATE(vp, acc, mod, flags) \
149 (*UFS_OPS(vp)->uo_update)((vp), (acc), (mod), (flags))
150#define UFS_TRUNCATE(vp, off, flags, cr) \
151 (*UFS_OPS(vp)->uo_truncate)((vp), (off), (flags), (cr))
152#define UFS_BALLOC(vp, off, size, cr, flags, bpp) \
153 (*UFS_OPS(vp)->uo_balloc)((vp), (off), (size), (cr), (flags), (bpp))
154#define UFS_SNAPGONE(vp) \
155 (*UFS_OPS(vp)->uo_snapgone)((vp))
156#define UFS_BUFRD(vp, uio, ioflag, cred) \
157 (*UFS_OPS(vp)->uo_bufrd)((vp), (uio), (ioflag), (cred))
158#define UFS_BUFWR(vp, uio, ioflag, cred) \
159 (*UFS_OPS(vp)->uo_bufwr)((vp), (uio), (ioflag), (cred))
160
161/* UFS-specific flags */
162#define UFS_NEEDSWAP 0x01 /* filesystem metadata need byte-swapping */
163#define UFS_ISAPPLEUFS 0x02 /* filesystem is Apple UFS */
164#define UFS_QUOTA 0x04 /* filesystem has QUOTA (v1) */
165#define UFS_QUOTA2 0x08 /* filesystem has QUOTA2 */
166
167/*
168 * Filesystem types
169 */
170#define UFS1 1
171#define UFS2 2
172
173
174/*
175 * Flags describing the state of quotas.
176 */
177#define QTF_OPENING 0x01 /* Q_QUOTAON in progress */
178#define QTF_CLOSING 0x02 /* Q_QUOTAOFF in progress */
179
180/* Convert mount ptr to ufsmount ptr. */
181#define VFSTOUFS(mp) ((struct ufsmount *)((mp)->mnt_data))
182
183#ifdef APPLE_UFS
184#define UFS_MPISAPPLEUFS(ump) ((ump)->um_flags & UFS_ISAPPLEUFS)
185#else
186#define UFS_MPISAPPLEUFS(ump) (0)
187#endif
188
189/*
190 * Macros to access file system parameters in the ufsmount structure.
191 * Used by ufs_bmap.
192 */
193#define MNINDIR(ump) ((ump)->um_nindir)
194#define blkptrtodb(ump, b) ((b) << (ump)->um_bptrtodb)
195
196/*
197 * Predicate for byte-swapping support.
198 */
199#define FSFMT(vp) (((vp)->v_mount->mnt_iflag & IMNT_DTYPE) == 0)
200
201#endif /* _KERNEL */
202
203#endif /* !_UFS_UFS_UFSMOUNT_H_ */
204