master
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2001, 2002 Scott Long <scottl@freebsd.org>
5 * 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 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#define UDF_HASHTBLSIZE 100
30
31struct udf_node {
32 struct vnode *i_vnode;
33 struct udf_mnt *udfmp;
34 ino_t hash_id;
35 long diroff;
36 struct file_entry *fentry;
37};
38
39struct udf_mnt {
40 int im_flags;
41 struct mount *im_mountp;
42 struct g_consumer *im_cp;
43 struct bufobj *im_bo;
44 struct cdev *im_dev;
45 struct vnode *im_devvp;
46 int bsize;
47 int bshift;
48 int bmask;
49 uint32_t part_start;
50 uint32_t part_len;
51 uint64_t root_id;
52 struct long_ad root_icb;
53 int p_sectors;
54 int s_table_entries;
55 struct udf_sparing_table *s_table;
56 void *im_d2l; /* disk->local iconv handle */
57#if 0
58 void *im_l2d; /* local->disk iconv handle */
59#endif
60};
61
62struct udf_dirstream {
63 struct udf_node *node;
64 struct udf_mnt *udfmp;
65 struct buf *bp;
66 uint8_t *data;
67 uint8_t *buf;
68 int fsize;
69 int off;
70 int this_off;
71 int offset;
72 int size;
73 int error;
74 int fid_fragment;
75};
76
77struct ifid {
78 u_short ifid_len;
79 u_short ifid_pad;
80 int ifid_ino;
81 long ifid_start;
82};
83
84#define VFSTOUDFFS(mp) ((struct udf_mnt *)((mp)->mnt_data))
85#define VTON(vp) ((struct udf_node *)((vp)->v_data))
86
87/*
88 * The block layer refers to things in terms of 512 byte blocks by default.
89 * btodb() is expensive, so speed things up.
90 * XXX Can the block layer be forced to use a different block size?
91 */
92#define RDSECTOR(devvp, sector, size, bp) \
93 bread(devvp, sector << (udfmp->bshift - DEV_BSHIFT), size, NOCRED, bp)
94
95MALLOC_DECLARE(M_UDFFENTRY);
96
97static __inline int
98udf_readdevblks(struct udf_mnt *udfmp, daddr_t sector, int size, struct buf **bp)
99{
100 if (size < 0 || size + udfmp->bmask < size)
101 return (ERANGE);
102 return (RDSECTOR(udfmp->im_devvp, sector,
103 (size + udfmp->bmask) & ~udfmp->bmask, bp));
104}
105
106/*
107 * Produce a suitable file number from an ICB. The passed in ICB is expected
108 * to be in little endian (meaning that it hasn't been swapped for big
109 * endian machines yet).
110 * XXX If the fileno resolves to 0, we might be in big trouble.
111 * XXX Assumes the ICB is a long_ad. This struct is compatible with short_ad,
112 * but not ext_ad.
113 */
114static __inline ino_t
115udf_getid(struct long_ad *icb)
116{
117 return (le32toh(icb->loc.lb_num));
118}
119
120int udf_allocv(struct mount *, struct vnode **, struct thread *);
121int udf_checktag(struct desc_tag *, uint16_t);
122int udf_vget(struct mount *, ino_t, int, struct vnode **);
123
124extern uma_zone_t udf_zone_trans;
125extern uma_zone_t udf_zone_node;
126extern uma_zone_t udf_zone_ds;
127
128extern struct vop_vector udf_fifoops;