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 | */ |
42 | struct ufs_args { |
43 | char *fspec; /* block special device to mount */ |
44 | }; |
45 | |
46 | /* |
47 | * Arguments to mount MFS |
48 | */ |
49 | struct 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 | |
67 | struct buf; |
68 | struct inode; |
69 | struct nameidata; |
70 | struct timeval; |
71 | struct uio; |
72 | struct vnode; |
73 | |
74 | /* This structure describes the UFS specific mount structure data. */ |
75 | struct 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 | |
131 | struct 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 | |