1/* $NetBSD: iso.h,v 1.10 2011/09/27 01:01:44 christos Exp $ */
2
3/*-
4 * Copyright (c) 1994
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley
8 * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
9 * Support code is derived from software contributed to Berkeley
10 * by Atsushi Murai (amurai@spec.co.jp).
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * @(#)iso.h 8.6 (Berkeley) 5/10/95
37 */
38
39/*
40 * Definitions describing ISO9660 file system structure, as well as
41 * the functions necessary to access fields of ISO9660 file system
42 * structures.
43 */
44
45#ifndef _ISOFS_CD9660_ISO_H_
46#define _ISOFS_CD9660_ISO_H_
47
48#define ISODCL(from, to) (to - from + 1)
49
50struct iso_volume_descriptor {
51 char type[ISODCL(1,1)]; /* 711 */
52 char id[ISODCL(2,6)];
53 char version[ISODCL(7,7)];
54 char data[ISODCL(8,2048)];
55};
56
57/* volume descriptor types */
58#define ISO_VD_PRIMARY 1
59#define ISO_VD_SUPPLEMENTARY 2
60#define ISO_VD_END 255
61
62#define ISO_STANDARD_ID "CD001"
63#define ISO_ECMA_ID "CDW01"
64
65#define ISO_MAXNAMLEN 255
66
67struct iso_primary_descriptor {
68 char type [ISODCL ( 1, 1)]; /* 711 */
69 char id [ISODCL ( 2, 6)];
70 char version [ISODCL ( 7, 7)]; /* 711 */
71 char unused1 [ISODCL ( 8, 8)];
72 char system_id [ISODCL ( 9, 40)]; /* achars */
73 char volume_id [ISODCL ( 41, 72)]; /* dchars */
74 char unused2 [ISODCL ( 73, 80)];
75 char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
76 char unused3 [ISODCL ( 89, 120)];
77 char volume_set_size [ISODCL (121, 124)]; /* 723 */
78 char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
79 char logical_block_size [ISODCL (129, 132)]; /* 723 */
80 char path_table_size [ISODCL (133, 140)]; /* 733 */
81 char type_l_path_table [ISODCL (141, 144)]; /* 731 */
82 char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
83 char type_m_path_table [ISODCL (149, 152)]; /* 732 */
84 char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
85 char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
86 char volume_set_id [ISODCL (191, 318)]; /* dchars */
87 char publisher_id [ISODCL (319, 446)]; /* achars */
88 char preparer_id [ISODCL (447, 574)]; /* achars */
89 char application_id [ISODCL (575, 702)]; /* achars */
90 char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
91 char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
92 char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
93 char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
94 char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
95 char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
96 char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
97 char file_structure_version [ISODCL (882, 882)]; /* 711 */
98 char unused4 [ISODCL (883, 883)];
99 char application_data [ISODCL (884, 1395)];
100 char unused5 [ISODCL (1396, 2048)];
101};
102#define ISO_DEFAULT_BLOCK_SIZE 2048
103
104struct iso_supplementary_descriptor {
105 char type [ISODCL ( 1, 1)]; /* 711 */
106 char id [ISODCL ( 2, 6)];
107 char version [ISODCL ( 7, 7)]; /* 711 */
108 char flags [ISODCL ( 8, 8)]; /* 711? */
109 char system_id [ISODCL ( 9, 40)]; /* achars */
110 char volume_id [ISODCL ( 41, 72)]; /* dchars */
111 char unused2 [ISODCL ( 73, 80)];
112 char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
113 char escape [ISODCL ( 89, 120)];
114 char volume_set_size [ISODCL (121, 124)]; /* 723 */
115 char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
116 char logical_block_size [ISODCL (129, 132)]; /* 723 */
117 char path_table_size [ISODCL (133, 140)]; /* 733 */
118 char type_l_path_table [ISODCL (141, 144)]; /* 731 */
119 char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
120 char type_m_path_table [ISODCL (149, 152)]; /* 732 */
121 char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
122 char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
123 char volume_set_id [ISODCL (191, 318)]; /* dchars */
124 char publisher_id [ISODCL (319, 446)]; /* achars */
125 char preparer_id [ISODCL (447, 574)]; /* achars */
126 char application_id [ISODCL (575, 702)]; /* achars */
127 char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
128 char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
129 char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
130 char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
131 char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
132 char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
133 char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
134 char file_structure_version [ISODCL (882, 882)]; /* 711 */
135 char unused4 [ISODCL (883, 883)];
136 char application_data [ISODCL (884, 1395)];
137 char unused5 [ISODCL (1396, 2048)];
138};
139
140struct iso_directory_record {
141 char length [ISODCL (1, 1)]; /* 711 */
142 char ext_attr_length [ISODCL (2, 2)]; /* 711 */
143 u_char extent [ISODCL (3, 10)]; /* 733 */
144 u_char size [ISODCL (11, 18)]; /* 733 */
145 char date [ISODCL (19, 25)]; /* 7 by 711 */
146 char flags [ISODCL (26, 26)];
147 char file_unit_size [ISODCL (27, 27)]; /* 711 */
148 char interleave [ISODCL (28, 28)]; /* 711 */
149 char volume_sequence_number [ISODCL (29, 32)]; /* 723 */
150 char name_len [ISODCL (33, 33)]; /* 711 */
151 char name [1]; /* XXX */
152};
153/* can't take sizeof(iso_directory_record), because of possible alignment
154 of the last entry (34 instead of 33) */
155#define ISO_DIRECTORY_RECORD_SIZE 33
156
157struct iso_extended_attributes {
158 u_char owner [ISODCL (1, 4)]; /* 723 */
159 u_char group [ISODCL (5, 8)]; /* 723 */
160 u_char perm [ISODCL (9, 10)]; /* 9.5.3 */
161 char ctime [ISODCL (11, 27)]; /* 8.4.26.1 */
162 char mtime [ISODCL (28, 44)]; /* 8.4.26.1 */
163 char xtime [ISODCL (45, 61)]; /* 8.4.26.1 */
164 char ftime [ISODCL (62, 78)]; /* 8.4.26.1 */
165 char recfmt [ISODCL (79, 79)]; /* 711 */
166 char recattr [ISODCL (80, 80)]; /* 711 */
167 u_char reclen [ISODCL (81, 84)]; /* 723 */
168 char system_id [ISODCL (85, 116)]; /* achars */
169 char system_use [ISODCL (117, 180)];
170 char version [ISODCL (181, 181)]; /* 711 */
171 char len_esc [ISODCL (182, 182)]; /* 711 */
172 char reserved [ISODCL (183, 246)];
173 u_char len_au [ISODCL (247, 250)]; /* 723 */
174};
175
176/* 7.1.1: unsigned char */
177static __inline __unused int
178isonum_711(const u_char *p)
179{
180 return *p;
181}
182
183/* 7.1.2: signed char */
184static __inline __unused int
185isonum_712(const u_char *p)
186{
187 return (signed char) *p;
188}
189
190/* 7.2.1: unsigned little-endian 16-bit value. NOT USED IN KERNEL. */
191static __inline __unused uint16_t
192isonum_721(const u_char *p)
193{
194 return le16dec(p);
195}
196
197/* 7.2.2: unsigned big-endian 16-bit value. NOT USED IN KERNEL. */
198static __inline __unused uint16_t
199isonum_722(const u_char *p)
200{
201 return be16dec(p);
202}
203
204/* 7.2.3: unsigned both-endian (little, then big) 16-bit value */
205static __inline __unused uint16_t
206isonum_723(const u_char *p)
207{
208#if BYTE_ORDER == BIG_ENDIAN
209 return be16dec(p + 2);
210#else
211 return le16dec(p);
212#endif
213}
214
215/* 7.3.1: unsigned little-endian 32-bit value. NOT USED IN KERNEL. */
216static __inline __unused uint32_t
217isonum_731(const u_char *p)
218{
219 return le32dec(p);
220}
221
222/* 7.3.2: unsigned big-endian 32-bit value. NOT USED IN KERNEL. */
223static __inline __unused uint32_t
224isonum_732(const u_char *p)
225{
226 return be32dec(p);
227}
228
229/* 7.3.3: unsigned both-endian (little, then big) 32-bit value */
230static __inline __unused uint32_t
231isonum_733(const u_char *p)
232{
233#if BYTE_ORDER == BIG_ENDIAN
234 return be32dec(p + 4);
235#else
236 return le32dec(p);
237#endif
238}
239
240/*
241 * Associated files have a leading '='.
242 */
243#define ASSOCCHAR '='
244
245#endif /* _ISOFS_CD9660_ISO_H_ */