Line data Source code
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 :
37 : typedef uint32_t udfino_t;
38 :
39 : struct 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 :
57 : struct 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 :
90 : struct 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 :
116 : static __inline int
117 0 : udf_readlblks(struct umount *ump, int sector, int size, struct buf **bp)
118 : {
119 0 : 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 : */
131 : static __inline udfino_t
132 0 : udf_getid(struct long_ad *icb)
133 : {
134 0 : return (letoh32(icb->loc.lb_num));
135 : }
136 :
137 : int udf_allocv(struct mount *, struct vnode **, struct proc *);
138 : int udf_hashlookup(struct umount *, udfino_t, int, struct vnode **);
139 : int udf_hashins(struct unode *);
140 : int udf_hashrem(struct unode *);
141 : int udf_checktag(struct desc_tag *, uint16_t);
142 :
143 : typedef uint16_t unicode_t;
144 :
145 : #endif /* _KERNEL */
146 :
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