Line data Source code
1 : /* $OpenBSD: iso.h,v 1.15 2013/05/30 17:35:01 guenther Exp $ */
2 : /* $NetBSD: iso.h,v 1.20 1997/07/07 22:45:34 cgd 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 8.4 (Berkeley) 12/5/94
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 : typedef uint32_t cdino_t;
47 :
48 : #define ISODCL(from, to) (to - from + 1)
49 :
50 : struct 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 : struct iso_primary_descriptor {
66 : char type [ISODCL ( 1, 1)]; /* 711 */
67 : char id [ISODCL ( 2, 6)];
68 : char version [ISODCL ( 7, 7)]; /* 711 */
69 : char unused1 [ISODCL ( 8, 8)];
70 : char system_id [ISODCL ( 9, 40)]; /* achars */
71 : char volume_id [ISODCL ( 41, 72)]; /* dchars */
72 : char unused2 [ISODCL ( 73, 80)];
73 : char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
74 : char unused3 [ISODCL ( 89, 120)];
75 : char volume_set_size [ISODCL (121, 124)]; /* 723 */
76 : char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
77 : char logical_block_size [ISODCL (129, 132)]; /* 723 */
78 : char path_table_size [ISODCL (133, 140)]; /* 733 */
79 : char type_l_path_table [ISODCL (141, 144)]; /* 731 */
80 : char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
81 : char type_m_path_table [ISODCL (149, 152)]; /* 732 */
82 : char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
83 : char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
84 : char volume_set_id [ISODCL (191, 318)]; /* dchars */
85 : char publisher_id [ISODCL (319, 446)]; /* achars */
86 : char preparer_id [ISODCL (447, 574)]; /* achars */
87 : char application_id [ISODCL (575, 702)]; /* achars */
88 : char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
89 : char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
90 : char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
91 : char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
92 : char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
93 : char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
94 : char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
95 : char file_structure_version [ISODCL (882, 882)]; /* 711 */
96 : char unused4 [ISODCL (883, 883)];
97 : char application_data [ISODCL (884, 1395)];
98 : char unused5 [ISODCL (1396, 2048)];
99 : };
100 : #define ISO_DEFAULT_BLOCK_SHIFT 11
101 : #define ISO_DEFAULT_BLOCK_SIZE (1<<ISO_DEFAULT_BLOCK_SHIFT)
102 :
103 : /*
104 : * Used by Microsoft Joliet extension to ISO9660. Almost the same
105 : * as PVD, but byte position 8 is a flag, and 89-120 is for escape.
106 : */
107 :
108 : struct iso_supplementary_descriptor {
109 : char type [ISODCL ( 1, 1)]; /* 711 */
110 : char id [ISODCL ( 2, 6)];
111 : char version [ISODCL ( 7, 7)]; /* 711 */
112 : char flags [ISODCL ( 8, 8)];
113 : char system_id [ISODCL ( 9, 40)]; /* achars */
114 : char volume_id [ISODCL ( 41, 72)]; /* dchars */
115 : char unused2 [ISODCL ( 73, 80)];
116 : char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
117 : char escape [ISODCL ( 89, 120)];
118 : char volume_set_size [ISODCL (121, 124)]; /* 723 */
119 : char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
120 : char logical_block_size [ISODCL (129, 132)]; /* 723 */
121 : char path_table_size [ISODCL (133, 140)]; /* 733 */
122 : char type_l_path_table [ISODCL (141, 144)]; /* 731 */
123 : char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
124 : char type_m_path_table [ISODCL (149, 152)]; /* 732 */
125 : char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
126 : char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
127 : char volume_set_id [ISODCL (191, 318)]; /* dchars */
128 : char publisher_id [ISODCL (319, 446)]; /* achars */
129 : char preparer_id [ISODCL (447, 574)]; /* achars */
130 : char application_id [ISODCL (575, 702)]; /* achars */
131 : char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
132 : char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
133 : char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
134 : char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
135 : char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
136 : char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
137 : char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
138 : char file_structure_version [ISODCL (882, 882)]; /* 711 */
139 : char unused4 [ISODCL (883, 883)];
140 : char application_data [ISODCL (884, 1395)];
141 : char unused5 [ISODCL (1396, 2048)];
142 : };
143 :
144 : struct iso_directory_record {
145 : char length [ISODCL (1, 1)]; /* 711 */
146 : char ext_attr_length [ISODCL (2, 2)]; /* 711 */
147 : u_char extent [ISODCL (3, 10)]; /* 733 */
148 : u_char size [ISODCL (11, 18)]; /* 733 */
149 : char date [ISODCL (19, 25)]; /* 7 by 711 */
150 : char flags [ISODCL (26, 26)];
151 : char file_unit_size [ISODCL (27, 27)]; /* 711 */
152 : char interleave [ISODCL (28, 28)]; /* 711 */
153 : char volume_sequence_number [ISODCL (29, 32)]; /* 723 */
154 : char name_len [ISODCL (33, 33)]; /* 711 */
155 : char name [1]; /* XXX */
156 : };
157 : /* can't take sizeof(iso_directory_record), because of possible alignment
158 : of the last entry (34 instead of 33) */
159 : #define ISO_DIRECTORY_RECORD_SIZE 33
160 :
161 : struct iso_extended_attributes {
162 : u_char owner [ISODCL (1, 4)]; /* 723 */
163 : u_char group [ISODCL (5, 8)]; /* 723 */
164 : u_char perm [ISODCL (9, 10)]; /* 9.5.3 */
165 : char ctime [ISODCL (11, 27)]; /* 8.4.26.1 */
166 : char mtime [ISODCL (28, 44)]; /* 8.4.26.1 */
167 : char xtime [ISODCL (45, 61)]; /* 8.4.26.1 */
168 : char ftime [ISODCL (62, 78)]; /* 8.4.26.1 */
169 : char recfmt [ISODCL (79, 79)]; /* 711 */
170 : char recattr [ISODCL (80, 80)]; /* 711 */
171 : u_char reclen [ISODCL (81, 84)]; /* 723 */
172 : char system_id [ISODCL (85, 116)]; /* achars */
173 : char system_use [ISODCL (117, 180)];
174 : char version [ISODCL (181, 181)]; /* 711 */
175 : char len_esc [ISODCL (182, 182)]; /* 711 */
176 : char reserved [ISODCL (183, 246)];
177 : u_char len_au [ISODCL (247, 250)]; /* 723 */
178 : };
179 :
180 : static __inline int isonum_711(u_char *) __attribute__ ((__unused__));
181 : static __inline int isonum_712(char *) __attribute__ ((__unused__));
182 : static __inline int isonum_721(u_char *) __attribute__ ((__unused__));
183 : static __inline int isonum_722(u_char *) __attribute__ ((__unused__));
184 : static __inline int isonum_723(u_char *) __attribute__ ((__unused__));
185 : static __inline int isonum_731(u_char *) __attribute__ ((__unused__));
186 : static __inline int isonum_732(u_char *) __attribute__ ((__unused__));
187 : static __inline int isonum_733(u_char *) __attribute__ ((__unused__));
188 :
189 : /* 7.1.1: unsigned char */
190 : static __inline int
191 0 : isonum_711(u_char *p)
192 : {
193 0 : return *p;
194 : }
195 :
196 : /* 7.1.2: signed(?) char */
197 : static __inline int
198 : isonum_712(char *p)
199 : {
200 : return *p;
201 : }
202 :
203 : /* 7.2.1: unsigned little-endian 16-bit value. NOT USED IN KERNEL. */
204 : static __inline int
205 : isonum_721(p)
206 : u_char *p;
207 : {
208 : #if !defined(__STRICT_ALIGNMENT) && (BYTE_ORDER == LITTLE_ENDIAN)
209 : return *(u_int16_t *)p;
210 : #else
211 : return *p|((char)p[1] << 8);
212 : #endif
213 : }
214 :
215 : /* 7.2.2: unsigned big-endian 16-bit value. NOT USED IN KERNEL. */
216 : static __inline int
217 : isonum_722(p)
218 : unsigned char *p;
219 : {
220 : #if !defined(__STRICT_ALIGNMENT) && (BYTE_ORDER == BIG_ENDIAN)
221 : return *(u_int16_t *)p;
222 : #else
223 : return ((char)*p << 8)|p[1];
224 : #endif
225 : }
226 :
227 : /* 7.2.3: unsigned both-endian (little, then big) 16-bit value */
228 : static __inline int
229 0 : isonum_723(u_char *p)
230 : {
231 : #if !defined(__STRICT_ALIGNMENT) && \
232 : ((BYTE_ORDER == LITTLE_ENDIAN) || (BYTE_ORDER == BIG_ENDIAN))
233 : #if BYTE_ORDER == LITTLE_ENDIAN
234 0 : return *(u_int16_t *)p;
235 : #else
236 : return *(u_int16_t *)(p + 2);
237 : #endif
238 : #else /* __STRICT_ALIGNMENT or weird byte order */
239 : return *p|(p[1] << 8);
240 : #endif
241 : }
242 :
243 : /* 7.3.1: unsigned little-endian 32-bit value. NOT USED IN KERNEL. */
244 : static __inline int
245 : isonum_731(p)
246 : u_char *p;
247 : {
248 : #if !defined(__STRICT_ALIGNMENT) && (BYTE_ORDER == LITTLE_ENDIAN)
249 : return *(u_int32_t *)p;
250 : #else
251 : return *p|(p[1] << 8)|(p[2] << 16)|(p[3] << 24);
252 : #endif
253 : }
254 :
255 : /* 7.3.2: unsigned big-endian 32-bit value. NOT USED IN KERNEL. */
256 : static __inline int
257 : isonum_732(p)
258 : unsigned char *p;
259 : {
260 : #if !defined(__STRICT_ALIGNMENT) && (BYTE_ORDER == BIG_ENDIAN)
261 : return *(u_int32_t *)p;
262 : #else
263 : return (*p << 24)|(p[1] << 16)|(p[2] << 8)|p[3];
264 : #endif
265 : }
266 :
267 : /* 7.3.3: unsigned both-endian (little, then big) 32-bit value */
268 : static __inline int
269 0 : isonum_733(u_char *p)
270 : {
271 : #if !defined(__STRICT_ALIGNMENT) && \
272 : ((BYTE_ORDER == LITTLE_ENDIAN) || (BYTE_ORDER == BIG_ENDIAN))
273 : #if BYTE_ORDER == LITTLE_ENDIAN
274 0 : return *(u_int32_t *)p;
275 : #else
276 : return *(u_int32_t *)(p + 4);
277 : #endif
278 : #else /* __STRICT_ALIGNMENT or weird byte order */
279 : return *p|(p[1] << 8)|(p[2] << 16)|(p[3] << 24);
280 : #endif
281 : }
282 :
283 : /*
284 : * Associated files have a leading '='.
285 : */
286 : #define ASSOCCHAR '='
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