1 /* $OpenBSD: iso.h,v 1.3 2023/09/05 15:33:40 robert Exp $ */
2 /* $NetBSD: iso.h,v 1.10 2011/09/27 01:01:44 christos Exp $ */
3
4 /*-
5 * Copyright (c) 1994
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley
9 * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
10 * Support code is derived from software contributed to Berkeley
11 * by Atsushi Murai (amurai@spec.co.jp).
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 * @(#)iso.h 8.6 (Berkeley) 5/10/95
38 */
39
40 /*
41 * Definitions describing ISO9660 file system structure, as well as
42 * the functions necessary to access fields of ISO9660 file system
43 * structures.
44 */
45
46 #ifndef _ISOFS_CD9660_ISO_H_
47 #define _ISOFS_CD9660_ISO_H_
48
49 #define ISODCL(from, to) (to - from + 1)
50
51 struct iso_volume_descriptor {
52 char type[ISODCL(1,1)]; /* 711 */
53 char id[ISODCL(2,6)];
54 char version[ISODCL(7,7)];
55 char data[ISODCL(8,2048)];
56 };
57
58 /* volume descriptor types */
59 #define ISO_VD_PRIMARY 1
60 #define ISO_VD_SUPPLEMENTARY 2
61 #define ISO_VD_END 255
62
63 #define ISO_STANDARD_ID "CD001"
64 #define ISO_ECMA_ID "CDW01"
65
66 #define ISO_MAXNAMLEN 255
67
68 struct iso_primary_descriptor {
69 char type [ISODCL ( 1, 1)]; /* 711 */
70 char id [ISODCL ( 2, 6)];
71 char version [ISODCL ( 7, 7)]; /* 711 */
72 char unused1 [ISODCL ( 8, 8)];
73 char system_id [ISODCL ( 9, 40)]; /* achars */
74 char volume_id [ISODCL ( 41, 72)]; /* dchars */
75 char unused2 [ISODCL ( 73, 80)];
76 char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
77 char unused3 [ISODCL ( 89, 120)];
78 char volume_set_size [ISODCL (121, 124)]; /* 723 */
79 char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
80 char logical_block_size [ISODCL (129, 132)]; /* 723 */
81 char path_table_size [ISODCL (133, 140)]; /* 733 */
82 char type_l_path_table [ISODCL (141, 144)]; /* 731 */
83 char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
84 char type_m_path_table [ISODCL (149, 152)]; /* 732 */
85 char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
86 char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
87 char volume_set_id [ISODCL (191, 318)]; /* dchars */
88 char publisher_id [ISODCL (319, 446)]; /* achars */
89 char preparer_id [ISODCL (447, 574)]; /* achars */
90 char application_id [ISODCL (575, 702)]; /* achars */
91 char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
92 char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
93 char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
94 char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
95 char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
96 char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
97 char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
98 char file_structure_version [ISODCL (882, 882)]; /* 711 */
99 char unused4 [ISODCL (883, 883)];
100 char application_data [ISODCL (884, 1395)];
101 char unused5 [ISODCL (1396, 2048)];
102 };
103 #define ISO_DEFAULT_BLOCK_SIZE 2048
104
105 struct iso_supplementary_descriptor {
106 char type [ISODCL ( 1, 1)]; /* 711 */
107 char id [ISODCL ( 2, 6)];
108 char version [ISODCL ( 7, 7)]; /* 711 */
109 char flags [ISODCL ( 8, 8)]; /* 711? */
110 char system_id [ISODCL ( 9, 40)]; /* achars */
111 char volume_id [ISODCL ( 41, 72)]; /* dchars */
112 char unused2 [ISODCL ( 73, 80)];
113 char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
114 char escape [ISODCL ( 89, 120)];
115 char volume_set_size [ISODCL (121, 124)]; /* 723 */
116 char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
117 char logical_block_size [ISODCL (129, 132)]; /* 723 */
118 char path_table_size [ISODCL (133, 140)]; /* 733 */
119 char type_l_path_table [ISODCL (141, 144)]; /* 731 */
120 char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
121 char type_m_path_table [ISODCL (149, 152)]; /* 732 */
122 char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
123 char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
124 char volume_set_id [ISODCL (191, 318)]; /* dchars */
125 char publisher_id [ISODCL (319, 446)]; /* achars */
126 char preparer_id [ISODCL (447, 574)]; /* achars */
127 char application_id [ISODCL (575, 702)]; /* achars */
128 char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
129 char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
130 char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
131 char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
132 char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
133 char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
134 char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
135 char file_structure_version [ISODCL (882, 882)]; /* 711 */
136 char unused4 [ISODCL (883, 883)];
137 char application_data [ISODCL (884, 1395)];
138 char unused5 [ISODCL (1396, 2048)];
139 };
140
141 struct iso_directory_record {
142 char length [ISODCL (1, 1)]; /* 711 */
143 char ext_attr_length [ISODCL (2, 2)]; /* 711 */
144 u_char extent [ISODCL (3, 10)]; /* 733 */
145 u_char size [ISODCL (11, 18)]; /* 733 */
146 char date [ISODCL (19, 25)]; /* 7 by 711 */
147 char flags [ISODCL (26, 26)];
148 char file_unit_size [ISODCL (27, 27)]; /* 711 */
149 char interleave [ISODCL (28, 28)]; /* 711 */
150 char volume_sequence_number [ISODCL (29, 32)]; /* 723 */
151 char name_len [ISODCL (33, 33)]; /* 711 */
152 char name [1]; /* XXX */
153 };
154 /* can't take sizeof(iso_directory_record), because of possible alignment
155 of the last entry (34 instead of 33) */
156 #define ISO_DIRECTORY_RECORD_SIZE 33
157
158 struct iso_extended_attributes {
159 u_char owner [ISODCL (1, 4)]; /* 723 */
160 u_char group [ISODCL (5, 8)]; /* 723 */
161 u_char perm [ISODCL (9, 10)]; /* 9.5.3 */
162 char ctime [ISODCL (11, 27)]; /* 8.4.26.1 */
163 char mtime [ISODCL (28, 44)]; /* 8.4.26.1 */
164 char xtime [ISODCL (45, 61)]; /* 8.4.26.1 */
165 char ftime [ISODCL (62, 78)]; /* 8.4.26.1 */
166 char recfmt [ISODCL (79, 79)]; /* 711 */
167 char recattr [ISODCL (80, 80)]; /* 711 */
168 u_char reclen [ISODCL (81, 84)]; /* 723 */
169 char system_id [ISODCL (85, 116)]; /* achars */
170 char system_use [ISODCL (117, 180)];
171 char version [ISODCL (181, 181)]; /* 711 */
172 char len_esc [ISODCL (182, 182)]; /* 711 */
173 char reserved [ISODCL (183, 246)];
174 u_char len_au [ISODCL (247, 250)]; /* 723 */
175 };
176
177 /* 7.1.1: unsigned char */
178 static __inline __unused int
isonum_711(const u_char * p)179 isonum_711(const u_char *p)
180 {
181 return *p;
182 }
183
184 /* 7.1.2: signed char */
185 static __inline __unused int
isonum_712(const u_char * p)186 isonum_712(const u_char *p)
187 {
188 return (signed char) *p;
189 }
190
191 /* 7.2.1: unsigned little-endian 16-bit value. NOT USED IN KERNEL. */
192 static __inline int
isonum_721(u_char * p)193 isonum_721(u_char *p)
194 {
195 #if !defined(__STRICT_ALIGNMENT) && (BYTE_ORDER == LITTLE_ENDIAN)
196 return *(u_int16_t *)p;
197 #else
198 return *p|((char)p[1] << 8);
199 #endif
200 }
201
202 /* 7.2.2: unsigned big-endian 16-bit value. NOT USED IN KERNEL. */
203 static __inline int
isonum_722(unsigned char * p)204 isonum_722(unsigned char *p)
205 {
206 #if !defined(__STRICT_ALIGNMENT) && (BYTE_ORDER == BIG_ENDIAN)
207 return *(u_int16_t *)p;
208 #else
209 return ((char)*p << 8)|p[1];
210 #endif
211 }
212
213 /* 7.2.3: unsigned both-endian (little, then big) 16-bit value */
214 static __inline int
isonum_723(u_char * p)215 isonum_723(u_char *p)
216 {
217 #if !defined(__STRICT_ALIGNMENT) && \
218 ((BYTE_ORDER == LITTLE_ENDIAN) || (BYTE_ORDER == BIG_ENDIAN))
219 #if BYTE_ORDER == LITTLE_ENDIAN
220 return *(u_int16_t *)p;
221 #else
222 return *(u_int16_t *)(p + 2);
223 #endif
224 #else /* __STRICT_ALIGNMENT or weird byte order */
225 return *p|(p[1] << 8);
226 #endif
227 }
228
229 /* 7.3.1: unsigned little-endian 32-bit value. NOT USED IN KERNEL. */
230 static __inline int
isonum_731(u_char * p)231 isonum_731(u_char *p)
232 {
233 #if !defined(__STRICT_ALIGNMENT) && (BYTE_ORDER == LITTLE_ENDIAN)
234 return *(u_int32_t *)p;
235 #else
236 return *p|(p[1] << 8)|(p[2] << 16)|(p[3] << 24);
237 #endif
238 }
239
240 /* 7.3.2: unsigned big-endian 32-bit value. NOT USED IN KERNEL. */
241 static __inline int
isonum_732(unsigned char * p)242 isonum_732(unsigned char *p)
243 {
244 #if !defined(__STRICT_ALIGNMENT) && (BYTE_ORDER == BIG_ENDIAN)
245 return *(u_int32_t *)p;
246 #else
247 return (*p << 24)|(p[1] << 16)|(p[2] << 8)|p[3];
248 #endif
249 }
250
251 /* 7.3.3: unsigned both-endian (little, then big) 32-bit value */
252 static __inline int
isonum_733(u_char * p)253 isonum_733(u_char *p)
254 {
255 #if !defined(__STRICT_ALIGNMENT) && \
256 ((BYTE_ORDER == LITTLE_ENDIAN) || (BYTE_ORDER == BIG_ENDIAN))
257 #if BYTE_ORDER == LITTLE_ENDIAN
258 return *(u_int32_t *)p;
259 #else
260 return *(u_int32_t *)(p + 4);
261 #endif
262 #else /* __STRICT_ALIGNMENT or weird byte order */
263 return *p|(p[1] << 8)|(p[2] << 16)|(p[3] << 24);
264 #endif
265 }
266
267 /*
268 * Associated files have a leading '='.
269 */
270 #define ASSOCCHAR '='
271
272 #endif /* _ISOFS_CD9660_ISO_H_ */
273