ufsmount.h revision 96873 
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: head/sys/ufs/ufs/ufsmount.h 96873 2002-05-18 18:51:14Z iedowse $
35 */
36
37#ifndef _UFS_UFS_UFSMOUNT_H_
38#define _UFS_UFS_UFSMOUNT_H_
39
40/*
41 * Arguments to mount UFS-based filesystems
42 */
43struct ufs_args {
44	char	*fspec;			/* block special device to mount */
45	struct	export_args export;	/* network export information */
46};
47
48#ifdef _KERNEL
49
50#ifdef MALLOC_DECLARE
51MALLOC_DECLARE(M_UFSMNT);
52#endif
53
54struct buf;
55struct inode;
56struct nameidata;
57struct timeval;
58struct ucred;
59struct uio;
60struct vnode;
61struct ufs_extattr_per_mount;
62
63/* This structure describes the UFS specific mount structure data. */
64struct ufsmount {
65	struct	mount *um_mountp;		/* filesystem vfs structure */
66	dev_t	um_dev;				/* device mounted */
67	struct	vnode *um_devvp;		/* block device mounted vnode */
68
69	struct	fs *um_fs;			/* pointer to superblock */
70
71	struct	vnode *um_quotas[MAXQUOTAS];	/* pointer to quota files */
72	struct	ucred *um_cred[MAXQUOTAS];	/* quota file access cred */
73	struct	ufs_extattr_per_mount um_extattr;	/* extended attrs */
74	u_long	um_nindir;			/* indirect ptrs per block */
75	u_long	um_bptrtodb;			/* indir ptr to disk block */
76	u_long	um_seqinc;			/* inc between seq blocks */
77	time_t	um_btime[MAXQUOTAS];		/* block quota time limit */
78	time_t	um_itime[MAXQUOTAS];		/* inode quota time limit */
79	char	um_qflags[MAXQUOTAS];		/* quota specific flags */
80	int64_t	um_savedmaxfilesize;		/* XXX - limit maxfilesize */
81	struct malloc_type *um_malloctype;	/* The inodes malloctype */
82	int	(*um_balloc)(struct vnode *, off_t, int, struct ucred *, int, struct buf **);
83	int	(*um_blkatoff)(struct vnode *, off_t, char **, struct buf **);
84	int	(*um_truncate)(struct vnode *, off_t, int, struct ucred *, struct thread *);
85	int	(*um_update)(struct vnode *, int);
86	int	(*um_valloc)(struct vnode *, int, struct ucred *, struct vnode **);
87	int	(*um_vfree)(struct vnode *, ino_t, int);
88};
89
90#define UFS_BALLOC(aa, bb, cc, dd, ee, ff) VFSTOUFS((aa)->v_mount)->um_balloc(aa, bb, cc, dd, ee, ff)
91#define UFS_BLKATOFF(aa, bb, cc, dd) VFSTOUFS((aa)->v_mount)->um_blkatoff(aa, bb, cc, dd)
92#define UFS_TRUNCATE(aa, bb, cc, dd, ee) VFSTOUFS((aa)->v_mount)->um_truncate(aa, bb, cc, dd, ee)
93#define UFS_UPDATE(aa, bb) VFSTOUFS((aa)->v_mount)->um_update(aa, bb)
94#define UFS_VALLOC(aa, bb, cc, dd) VFSTOUFS((aa)->v_mount)->um_valloc(aa, bb, cc, dd)
95#define UFS_VFREE(aa, bb, cc) VFSTOUFS((aa)->v_mount)->um_vfree(aa, bb, cc)
96
97/*
98 * Flags describing the state of quotas.
99 */
100#define	QTF_OPENING	0x01			/* Q_QUOTAON in progress */
101#define	QTF_CLOSING	0x02			/* Q_QUOTAOFF in progress */
102
103/* Convert mount ptr to ufsmount ptr. */
104#define VFSTOUFS(mp)	((struct ufsmount *)((mp)->mnt_data))
105
106/*
107 * Macros to access filesystem parameters in the ufsmount structure.
108 * Used by ufs_bmap.
109 */
110#define MNINDIR(ump)			((ump)->um_nindir)
111#define	blkptrtodb(ump, b)		((b) << (ump)->um_bptrtodb)
112#define	is_sequential(ump, a, b)	((b) == (a) + ump->um_seqinc)
113#endif /* _KERNEL */
114
115#endif
116