1/* $NetBSD: iso.h,v 1.11 2026/01/08 15:39:07 nia 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#include <sys/endian.h>
49
50#define ISODCL(from, to) (to - from + 1)
51
52struct iso_volume_descriptor {
53 char type[ISODCL(1,1)]; /* 711 */
54 char id[ISODCL(2,6)];
55 char version[ISODCL(7,7)];
56 char data[ISODCL(8,2048)];
57};
58
59/* volume descriptor types */
60#define ISO_VD_PRIMARY 1
61#define ISO_VD_SUPPLEMENTARY 2
62#define ISO_VD_END 255
63
64#define ISO_STANDARD_ID "CD001"
65#define ISO_ECMA_ID "CDW01"
66
67#define ISO_MAXNAMLEN 255
68
69struct iso_primary_descriptor {
70 char type [ISODCL ( 1, 1)]; /* 711 */
71 char id [ISODCL ( 2, 6)];
72 char version [ISODCL ( 7, 7)]; /* 711 */
73 char unused1 [ISODCL ( 8, 8)];
74 char system_id [ISODCL ( 9, 40)]; /* achars */
75 char volume_id [ISODCL ( 41, 72)]; /* dchars */
76 char unused2 [ISODCL ( 73, 80)];
77 char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
78 char unused3 [ISODCL ( 89, 120)];
79 char volume_set_size [ISODCL (121, 124)]; /* 723 */
80 char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
81 char logical_block_size [ISODCL (129, 132)]; /* 723 */
82 char path_table_size [ISODCL (133, 140)]; /* 733 */
83 char type_l_path_table [ISODCL (141, 144)]; /* 731 */
84 char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
85 char type_m_path_table [ISODCL (149, 152)]; /* 732 */
86 char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
87 char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
88 char volume_set_id [ISODCL (191, 318)]; /* dchars */
89 char publisher_id [ISODCL (319, 446)]; /* achars */
90 char preparer_id [ISODCL (447, 574)]; /* achars */
91 char application_id [ISODCL (575, 702)]; /* achars */
92 char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
93 char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
94 char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
95 char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
96 char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
97 char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
98 char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
99 char file_structure_version [ISODCL (882, 882)]; /* 711 */
100 char unused4 [ISODCL (883, 883)];
101 char application_data [ISODCL (884, 1395)];
102 char unused5 [ISODCL (1396, 2048)];
103};
104#define ISO_DEFAULT_BLOCK_SIZE 2048
105
106struct iso_supplementary_descriptor {
107 char type [ISODCL ( 1, 1)]; /* 711 */
108 char id [ISODCL ( 2, 6)];
109 char version [ISODCL ( 7, 7)]; /* 711 */
110 char flags [ISODCL ( 8, 8)]; /* 711? */
111 char system_id [ISODCL ( 9, 40)]; /* achars */
112 char volume_id [ISODCL ( 41, 72)]; /* dchars */
113 char unused2 [ISODCL ( 73, 80)];
114 char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
115 char escape [ISODCL ( 89, 120)];
116 char volume_set_size [ISODCL (121, 124)]; /* 723 */
117 char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
118 char logical_block_size [ISODCL (129, 132)]; /* 723 */
119 char path_table_size [ISODCL (133, 140)]; /* 733 */
120 char type_l_path_table [ISODCL (141, 144)]; /* 731 */
121 char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
122 char type_m_path_table [ISODCL (149, 152)]; /* 732 */
123 char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
124 char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
125 char volume_set_id [ISODCL (191, 318)]; /* dchars */
126 char publisher_id [ISODCL (319, 446)]; /* achars */
127 char preparer_id [ISODCL (447, 574)]; /* achars */
128 char application_id [ISODCL (575, 702)]; /* achars */
129 char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
130 char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
131 char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
132 char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
133 char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
134 char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
135 char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
136 char file_structure_version [ISODCL (882, 882)]; /* 711 */
137 char unused4 [ISODCL (883, 883)];
138 char application_data [ISODCL (884, 1395)];
139 char unused5 [ISODCL (1396, 2048)];
140};
141
142struct iso_directory_record {
143 char length [ISODCL (1, 1)]; /* 711 */
144 char ext_attr_length [ISODCL (2, 2)]; /* 711 */
145 u_char extent [ISODCL (3, 10)]; /* 733 */
146 u_char size [ISODCL (11, 18)]; /* 733 */
147 char date [ISODCL (19, 25)]; /* 7 by 711 */
148 char flags [ISODCL (26, 26)];
149 char file_unit_size [ISODCL (27, 27)]; /* 711 */
150 char interleave [ISODCL (28, 28)]; /* 711 */
151 char volume_sequence_number [ISODCL (29, 32)]; /* 723 */
152 char name_len [ISODCL (33, 33)]; /* 711 */
153 char name [1]; /* XXX */
154};
155/* can't take sizeof(iso_directory_record), because of possible alignment
156 of the last entry (34 instead of 33) */
157#define ISO_DIRECTORY_RECORD_SIZE 33
158
159struct iso_extended_attributes {
160 u_char owner [ISODCL (1, 4)]; /* 723 */
161 u_char group [ISODCL (5, 8)]; /* 723 */
162 u_char perm [ISODCL (9, 10)]; /* 9.5.3 */
163 char ctime [ISODCL (11, 27)]; /* 8.4.26.1 */
164 char mtime [ISODCL (28, 44)]; /* 8.4.26.1 */
165 char xtime [ISODCL (45, 61)]; /* 8.4.26.1 */
166 char ftime [ISODCL (62, 78)]; /* 8.4.26.1 */
167 char recfmt [ISODCL (79, 79)]; /* 711 */
168 char recattr [ISODCL (80, 80)]; /* 711 */
169 u_char reclen [ISODCL (81, 84)]; /* 723 */
170 char system_id [ISODCL (85, 116)]; /* achars */
171 char system_use [ISODCL (117, 180)];
172 char version [ISODCL (181, 181)]; /* 711 */
173 char len_esc [ISODCL (182, 182)]; /* 711 */
174 char reserved [ISODCL (183, 246)];
175 u_char len_au [ISODCL (247, 250)]; /* 723 */
176};
177
178/* 7.1.1: unsigned char */
179static __inline NETCOMPAT_UNUSED int
180isonum_711(const u_char *p)
181{
182 return *p;
183}
184
185/* 7.1.2: signed char */
186static __inline NETCOMPAT_UNUSED int
187isonum_712(const u_char *p)
188{
189 return (signed char) *p;
190}
191
192/* 7.2.1: unsigned little-endian 16-bit value. NOT USED IN KERNEL. */
193static __inline NETCOMPAT_UNUSED uint16_t
194isonum_721(const u_char *p)
195{
196 return le16dec(p);
197}
198
199/* 7.2.2: unsigned big-endian 16-bit value. NOT USED IN KERNEL. */
200static __inline NETCOMPAT_UNUSED uint16_t
201isonum_722(const u_char *p)
202{
203 return be16dec(p);
204}
205
206/* 7.2.3: unsigned both-endian (little, then big) 16-bit value */
207static __inline NETCOMPAT_UNUSED uint16_t
208isonum_723(const u_char *p)
209{
210#if BYTE_ORDER == BIG_ENDIAN
211 return be16dec(p + 2);
212#else
213 return le16dec(p);
214#endif
215}
216
217/* 7.3.1: unsigned little-endian 32-bit value. NOT USED IN KERNEL. */
218static __inline NETCOMPAT_UNUSED uint32_t
219isonum_731(const u_char *p)
220{
221 return le32dec(p);
222}
223
224/* 7.3.2: unsigned big-endian 32-bit value. NOT USED IN KERNEL. */
225static __inline NETCOMPAT_UNUSED uint32_t
226isonum_732(const u_char *p)
227{
228 return be32dec(p);
229}
230
231/* 7.3.3: unsigned both-endian (little, then big) 32-bit value */
232static __inline NETCOMPAT_UNUSED uint32_t
233isonum_733(const u_char *p)
234{
235#if BYTE_ORDER == BIG_ENDIAN
236 return be32dec(p + 4);
237#else
238 return le32dec(p);
239#endif
240}
241
242/*
243 * Associated files have a leading '='.
244 */
245#define ASSOCCHAR '='
246
247#endif /* _ISOFS_CD9660_ISO_H_ */
