FreeBSD/Linux Kernel Cross Reference
sys/ufs/ufs/ufsmount.h
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 * $FreeBSD$
35 */
36
37 #ifndef _UFS_UFS_UFSMOUNT_H_
38 #define _UFS_UFS_UFSMOUNT_H_
39
40 /*
41 * Arguments to mount UFS-based filesystems
42 */
43 struct ufs_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 */
51 struct 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 file system in memory */
55 u_long size; /* size of file system */
56 };
57
58 #ifdef KERNEL
59
60 #ifdef MALLOC_DECLARE
61 MALLOC_DECLARE(M_UFSMNT);
62 #endif
63
64 struct buf;
65 struct inode;
66 struct nameidata;
67 struct timeval;
68 struct ucred;
69 struct uio;
70 struct vnode;
71 struct netexport;
72
73 /* This structure describes the UFS specific mount structure data. */
74 struct ufsmount {
75 struct mount *um_mountp; /* filesystem vfs structure */
76 dev_t um_dev; /* device mounted */
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;
83 #define um_fs ufsmount_u.fs
84 #define um_e2fs ufsmount_u.e2fs
85 #define um_e2fsb ufsmount_u.e2fs->s_es
86
87 struct vnode *um_quotas[MAXQUOTAS]; /* pointer to quota files */
88 struct ucred *um_cred[MAXQUOTAS]; /* quota file access cred */
89 u_long um_nindir; /* indirect ptrs per block */
90 u_long um_bptrtodb; /* indir ptr to disk block */
91 u_long um_seqinc; /* inc between seq blocks */
92 time_t um_btime[MAXQUOTAS]; /* block quota time limit */
93 time_t um_itime[MAXQUOTAS]; /* inode quota time limit */
94 char um_qflags[MAXQUOTAS]; /* quota specific flags */
95 struct netexport um_export; /* export information */
96 int64_t um_savedmaxfilesize; /* XXX - limit maxfilesize */
97 struct malloc_type *um_malloctype; /* The inodes malloctype */
98 int um_i_effnlink_valid; /* i_effnlink valid? */
99 int (*um_blkatoff) __P((struct vnode *, off_t, char **, struct buf **));
100 int (*um_truncate) __P((struct vnode *, off_t, int, struct ucred *, struct proc *));
101 int (*um_update) __P((struct vnode *, int));
102 int (*um_valloc) __P((struct vnode *, int, struct ucred *, struct vnode **));
103 int (*um_vfree) __P((struct vnode *, ino_t, int));
104 };
105
106 #define UFS_BLKATOFF(aa, bb, cc, dd) VFSTOUFS((aa)->v_mount)->um_blkatoff(aa, bb, cc, dd)
107 #define UFS_TRUNCATE(aa, bb, cc, dd, ee) VFSTOUFS((aa)->v_mount)->um_truncate(aa, bb, cc, dd, ee)
108 #define UFS_UPDATE(aa, bb) VFSTOUFS((aa)->v_mount)->um_update(aa, bb)
109 #define UFS_VALLOC(aa, bb, cc, dd) VFSTOUFS((aa)->v_mount)->um_valloc(aa, bb, cc, dd)
110 #define UFS_VFREE(aa, bb, cc) VFSTOUFS((aa)->v_mount)->um_vfree(aa, bb, cc)
111
112 /*
113 * Flags describing the state of quotas.
114 */
115 #define QTF_OPENING 0x01 /* Q_QUOTAON in progress */
116 #define QTF_CLOSING 0x02 /* Q_QUOTAOFF in progress */
117
118 /* Convert mount ptr to ufsmount ptr. */
119 #define VFSTOUFS(mp) ((struct ufsmount *)((mp)->mnt_data))
120
121 /*
122 * Macros to access file system parameters in the ufsmount structure.
123 * Used by ufs_bmap.
124 */
125 #define MNINDIR(ump) ((ump)->um_nindir)
126 #define blkptrtodb(ump, b) ((b) << (ump)->um_bptrtodb)
127 #define is_sequential(ump, a, b) ((b) == (a) + ump->um_seqinc)
128 #endif /* KERNEL */
129
130 #endif
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