1/* $OpenBSD: udf.h,v 1.21 2016/06/19 11:54:33 natano Exp $ */
2
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 * $FreeBSD: src/sys/fs/udf/udf.h,v 1.9 2004/10/29 10:40:58 phk Exp $
29 */
30
31/*
32 * Ported to OpenBSD by Pedro Martelletto in February 2005.
33 */
34
35#define UDF_HASHTBLSIZE 100
36
37typedef uint32_t udfino_t;
38
39struct unode {
40 LIST_ENTRY(unode) u_le;
41 struct vnode *u_vnode;
42 struct vnode *u_devvp;
43 struct umount *u_ump;
44 struct rrwlock u_lock;
45 dev_t u_dev;
46 udfino_t u_ino;
47 union {
48 long u_diroff;
49 long u_vatlen;
50 } un_u;
51 struct extfile_entry *u_fentry;
52};
53
54#define u_diroff un_u.u_diroff
55#define u_vatlen un_u.u_vatlen
56
57struct umount {
58 int um_flags;
59 struct mount *um_mountp;
60 struct vnode *um_devvp;
61 dev_t um_dev;
62 int um_bsize;
63 int um_bshift;
64 int um_bmask;
65 uint32_t um_start;
66 uint32_t um_realstart;
67 uint32_t um_len;
68 uint32_t um_reallen;
69 uint32_t um_meta_start;
70 uint32_t um_meta_len;
71 struct unode *um_vat;
72 struct long_ad um_root_icb;
73 LIST_HEAD(udf_hash_lh, unode) *um_hashtbl;
74 SIPHASH_KEY um_hashkey;
75 u_long um_hashsz;
76 struct mutex um_hashmtx;
77 int um_psecs;
78 int um_stbl_len;
79 struct udf_sparing_table *um_stbl;
80};
81
82#define UDF_MNT_FIND_VAT 0x01 /* Indicates a VAT must be found */
83#define UDF_MNT_USES_VAT 0x02 /* Indicates a VAT must be used */
84#define UDF_MNT_USES_META 0x04 /* Indicates we are using a Metadata partition*/
85
86#define VTOU(vp) ((struct unode *)((vp)->v_data))
87
88#ifdef _KERNEL
89
90struct udf_dirstream {
91 struct unode *node;
92 struct umount *ump;
93 struct buf *bp;
94 uint8_t *data;
95 uint8_t *buf;
96 int fsize;
97 int off;
98 int this_off;
99 int offset;
100 int size;
101 int error;
102 int fid_fragment;
103};
104
105#define VFSTOUDFFS(mp) ((struct umount *)((mp)->mnt_data))
106
107/*
108 * The block layer refers to things in terms of 512 byte blocks by default.
109 * btodb() is expensive, so speed things up.
110 * Can the block layer be forced to use a different block size?
111 */
112#define RDSECTOR(devvp, sector, size, bp) \
113 bread(devvp, \
114 ((daddr_t)(sector) << ump->um_bshift) / DEV_BSIZE, size, bp)
115
116static __inline int
117udf_readlblks(struct umount *ump, int sector, int size, struct buf **bp)
118{
119 return (RDSECTOR(ump->um_devvp, sector,
120 (size + ump->um_bmask) & ~ump->um_bmask, bp));
121}
122
123/*
124 * Produce a suitable file number from an ICB. The passed in ICB is expected
125 * to be in little endian (meaning that it hasn't been swapped for big
126 * endian machines yet).
127 * If the fileno resolves to 0, we might be in big trouble.
128 * Assumes the ICB is a long_ad. This struct is compatible with short_ad,
129 * but not ext_ad.
130 */
131static __inline udfino_t
132udf_getid(struct long_ad *icb)
133{
134 return (letoh32(icb->loc.lb_num));
135}
136
137int udf_allocv(struct mount *, struct vnode **, struct proc *);
138int udf_hashlookup(struct umount *, udfino_t, int, struct vnode **);
139int udf_hashins(struct unode *);
140int udf_hashrem(struct unode *);
141int udf_checktag(struct desc_tag *, uint16_t);
142
143typedef uint16_t unicode_t;
144
145#endif /* _KERNEL */