1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
/* $OpenBSD: udf.h,v 1.7 2006/07/08 23:11:59 pedro Exp $ */
/*
* Copyright (c) 2001, 2002 Scott Long <scottl@freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD: src/sys/fs/udf/udf.h,v 1.9 2004/10/29 10:40:58 phk Exp $
*/
/*
* Ported to OpenBSD by Pedro Martelletto <pedro@openbsd.org> in February 2005.
*/
#define UDF_HASHTBLSIZE 100
struct unode {
LIST_ENTRY(unode) u_le;
struct vnode *u_vnode;
struct vnode *u_devvp;
struct udf_mnt *u_ump;
struct lock u_lock;
dev_t u_dev;
ino_t u_ino;
union {
long u_diroff;
long u_vatlen;
} un_u;
struct file_entry *u_fentry;
};
#define u_diroff un_u.u_diroff
#define u_vatlen un_u.u_vatlen
struct udf_mnt {
int im_flags;
struct mount *im_mountp;
struct vnode *im_devvp;
dev_t im_dev;
int bsize;
int bshift;
int bmask;
uint32_t part_start;
uint32_t part_len;
struct vnode *im_vat;
struct vnode *root_vp;
struct long_ad root_icb;
LIST_HEAD(udf_hash_lh, unode) *hashtbl;
u_long hashsz;
struct mutex hash_mtx;
int p_sectors;
int s_table_entries;
struct udf_sparing_table *s_table;
};
#define UDF_MNT_FIND_VAT 0x01 /* Indicates a VAT must be found */
#define UDF_MNT_USES_VAT 0x02 /* Indicates a VAT must be used */
struct udf_dirstream {
struct unode *node;
struct udf_mnt *udfmp;
struct buf *bp;
uint8_t *data;
uint8_t *buf;
int fsize;
int off;
int this_off;
int offset;
int size;
int error;
int fid_fragment;
};
#define VFSTOUDFFS(mp) ((struct udf_mnt *)((mp)->mnt_data))
#define VTOU(vp) ((struct unode *)((vp)->v_data))
/*
* The block layer refers to things in terms of 512 byte blocks by default.
* btodb() is expensive, so speed things up.
* Can the block layer be forced to use a different block size?
*/
#define RDSECTOR(devvp, sector, size, bp) \
bread(devvp, sector << (udfmp->bshift - DEV_BSHIFT), size, NOCRED, bp)
static __inline int
udf_readlblks(struct udf_mnt *udfmp, int sector, int size, struct buf **bp)
{
return (RDSECTOR(udfmp->im_devvp, sector,
(size + udfmp->bmask) & ~udfmp->bmask, bp));
}
static __inline int
udf_readalblks(struct udf_mnt *udfmp, int lsector, int size, struct buf **bp)
{
daddr_t rablock, lblk;
int rasize;
lblk = (lsector + udfmp->part_start) << (udfmp->bshift - DEV_BSHIFT);
rablock = (lblk + 1) << udfmp->bshift;
rasize = size;
return (breadn(udfmp->im_devvp, lblk,
(size + udfmp->bmask) & ~udfmp->bmask,
&rablock, &rasize, 1, NOCRED, bp));
}
/*
* Produce a suitable file number from an ICB. The passed in ICB is expected
* to be in little endian (meaning that it hasn't been swapped for big
* endian machines yet).
* If the fileno resolves to 0, we might be in big trouble.
* Assumes the ICB is a long_ad. This struct is compatible with short_ad,
* but not ext_ad.
*/
static __inline ino_t
udf_getid(struct long_ad *icb)
{
return (letoh32(icb->loc.lb_num));
}
int udf_allocv(struct mount *, struct vnode **, struct proc *);
int udf_hashlookup(struct udf_mnt *, ino_t, int, struct vnode **);
int udf_hashins(struct unode *);
int udf_hashrem(struct unode *);
int udf_checktag(struct desc_tag *, uint16_t);
typedef uint16_t unicode_t;
|
