iso.h revision 1.1
1 /* $NetBSD: iso.h,v 1.1 2002/12/23 17:52:10 jdolecek 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 (at) blitz.com). The Rock Ridge Extension 9 * Support code is derived from software contributed to Berkeley 10 * by Atsushi Murai (amurai (at) 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. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)iso.h 8.6 (Berkeley) 5/10/95 41 */ 42 43 /* 44 * Definitions describing ISO9660 file system structure, as well as 45 * the functions necessary to access fields of ISO9660 file system 46 * structures. 47 */ 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 struct iso_primary_descriptor { 67 char type [ISODCL ( 1, 1)]; /* 711 */ 68 char id [ISODCL ( 2, 6)]; 69 char version [ISODCL ( 7, 7)]; /* 711 */ 70 char unused1 [ISODCL ( 8, 8)]; 71 char system_id [ISODCL ( 9, 40)]; /* achars */ 72 char volume_id [ISODCL ( 41, 72)]; /* dchars */ 73 char unused2 [ISODCL ( 73, 80)]; 74 char volume_space_size [ISODCL ( 81, 88)]; /* 733 */ 75 char unused3 [ISODCL ( 89, 120)]; 76 char volume_set_size [ISODCL (121, 124)]; /* 723 */ 77 char volume_sequence_number [ISODCL (125, 128)]; /* 723 */ 78 char logical_block_size [ISODCL (129, 132)]; /* 723 */ 79 char path_table_size [ISODCL (133, 140)]; /* 733 */ 80 char type_l_path_table [ISODCL (141, 144)]; /* 731 */ 81 char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */ 82 char type_m_path_table [ISODCL (149, 152)]; /* 732 */ 83 char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */ 84 char root_directory_record [ISODCL (157, 190)]; /* 9.1 */ 85 char volume_set_id [ISODCL (191, 318)]; /* dchars */ 86 char publisher_id [ISODCL (319, 446)]; /* achars */ 87 char preparer_id [ISODCL (447, 574)]; /* achars */ 88 char application_id [ISODCL (575, 702)]; /* achars */ 89 char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */ 90 char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */ 91 char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */ 92 char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */ 93 char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */ 94 char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */ 95 char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */ 96 char file_structure_version [ISODCL (882, 882)]; /* 711 */ 97 char unused4 [ISODCL (883, 883)]; 98 char application_data [ISODCL (884, 1395)]; 99 char unused5 [ISODCL (1396, 2048)]; 100 }; 101 #define ISO_DEFAULT_BLOCK_SIZE 2048 102 103 struct iso_supplementary_descriptor { 104 char type [ISODCL ( 1, 1)]; /* 711 */ 105 char id [ISODCL ( 2, 6)]; 106 char version [ISODCL ( 7, 7)]; /* 711 */ 107 char flags [ISODCL ( 8, 8)]; /* 711? */ 108 char system_id [ISODCL ( 9, 40)]; /* achars */ 109 char volume_id [ISODCL ( 41, 72)]; /* dchars */ 110 char unused2 [ISODCL ( 73, 80)]; 111 char volume_space_size [ISODCL ( 81, 88)]; /* 733 */ 112 char escape [ISODCL ( 89, 120)]; 113 char volume_set_size [ISODCL (121, 124)]; /* 723 */ 114 char volume_sequence_number [ISODCL (125, 128)]; /* 723 */ 115 char logical_block_size [ISODCL (129, 132)]; /* 723 */ 116 char path_table_size [ISODCL (133, 140)]; /* 733 */ 117 char type_l_path_table [ISODCL (141, 144)]; /* 731 */ 118 char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */ 119 char type_m_path_table [ISODCL (149, 152)]; /* 732 */ 120 char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */ 121 char root_directory_record [ISODCL (157, 190)]; /* 9.1 */ 122 char volume_set_id [ISODCL (191, 318)]; /* dchars */ 123 char publisher_id [ISODCL (319, 446)]; /* achars */ 124 char preparer_id [ISODCL (447, 574)]; /* achars */ 125 char application_id [ISODCL (575, 702)]; /* achars */ 126 char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */ 127 char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */ 128 char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */ 129 char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */ 130 char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */ 131 char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */ 132 char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */ 133 char file_structure_version [ISODCL (882, 882)]; /* 711 */ 134 char unused4 [ISODCL (883, 883)]; 135 char application_data [ISODCL (884, 1395)]; 136 char unused5 [ISODCL (1396, 2048)]; 137 }; 138 139 struct iso_directory_record { 140 char length [ISODCL (1, 1)]; /* 711 */ 141 char ext_attr_length [ISODCL (2, 2)]; /* 711 */ 142 u_char extent [ISODCL (3, 10)]; /* 733 */ 143 u_char size [ISODCL (11, 18)]; /* 733 */ 144 char date [ISODCL (19, 25)]; /* 7 by 711 */ 145 char flags [ISODCL (26, 26)]; 146 char file_unit_size [ISODCL (27, 27)]; /* 711 */ 147 char interleave [ISODCL (28, 28)]; /* 711 */ 148 char volume_sequence_number [ISODCL (29, 32)]; /* 723 */ 149 char name_len [ISODCL (33, 33)]; /* 711 */ 150 char name [1]; /* XXX */ 151 }; 152 /* can't take sizeof(iso_directory_record), because of possible alignment 153 of the last entry (34 instead of 33) */ 154 #define ISO_DIRECTORY_RECORD_SIZE 33 155 156 struct iso_extended_attributes { 157 u_char owner [ISODCL (1, 4)]; /* 723 */ 158 u_char group [ISODCL (5, 8)]; /* 723 */ 159 u_char perm [ISODCL (9, 10)]; /* 9.5.3 */ 160 char ctime [ISODCL (11, 27)]; /* 8.4.26.1 */ 161 char mtime [ISODCL (28, 44)]; /* 8.4.26.1 */ 162 char xtime [ISODCL (45, 61)]; /* 8.4.26.1 */ 163 char ftime [ISODCL (62, 78)]; /* 8.4.26.1 */ 164 char recfmt [ISODCL (79, 79)]; /* 711 */ 165 char recattr [ISODCL (80, 80)]; /* 711 */ 166 u_char reclen [ISODCL (81, 84)]; /* 723 */ 167 char system_id [ISODCL (85, 116)]; /* achars */ 168 char system_use [ISODCL (117, 180)]; 169 char version [ISODCL (181, 181)]; /* 711 */ 170 char len_esc [ISODCL (182, 182)]; /* 711 */ 171 char reserved [ISODCL (183, 246)]; 172 u_char len_au [ISODCL (247, 250)]; /* 723 */ 173 }; 174 175 static __inline int isonum_711 __P((u_char *)) __attribute__ ((unused)); 176 static __inline int isonum_712 __P((char *)) __attribute__ ((unused)); 177 static __inline int isonum_721 __P((u_char *)) __attribute__ ((unused)); 178 static __inline int isonum_722 __P((u_char *)) __attribute__ ((unused)); 179 static __inline int isonum_723 __P((u_char *)) __attribute__ ((unused)); 180 static __inline int isonum_731 __P((u_char *)) __attribute__ ((unused)); 181 static __inline int isonum_732 __P((u_char *)) __attribute__ ((unused)); 182 static __inline int isonum_733 __P((u_char *)) __attribute__ ((unused)); 183 184 /* 7.1.1: unsigned char */ 185 static __inline int 186 #if __STDC__ 187 isonum_711(u_char *p) 188 #else 189 isonum_711(p) 190 u_char *p; 191 #endif 192 { 193 return *p; 194 } 195 196 /* 7.1.2: signed(?) char */ 197 static __inline int 198 #if __STDC__ 199 isonum_712(char *p) 200 #else 201 isonum_712(p) 202 char *p; 203 #endif 204 { 205 return *p; 206 } 207 208 /* 7.2.1: unsigned little-endian 16-bit value. NOT USED IN KERNEL. */ 209 static __inline int 210 isonum_721(p) 211 u_char *p; 212 { 213 #if defined(UNALIGNED_ACCESS) && (BYTE_ORDER == LITTLE_ENDIAN) 214 return *(u_int16t *)p; 215 #else 216 return *p|((char)p[1] << 8); 217 #endif 218 } 219 220 /* 7.2.2: unsigned big-endian 16-bit value. NOT USED IN KERNEL. */ 221 static __inline int 222 isonum_722(p) 223 unsigned char *p; 224 { 225 #if defined(UNALIGNED_ACCESS) && (BYTE_ORDER == BIG_ENDIAN) 226 return *(u_int16t *)p; 227 #else 228 return ((char)*p << 8)|p[1]; 229 #endif 230 } 231 232 /* 7.2.3: unsigned both-endian (little, then big) 16-bit value */ 233 static __inline int 234 #if __STDC__ 235 isonum_723(u_char *p) 236 #else 237 isonum_723(p) 238 u_char *p; 239 #endif 240 { 241 #if defined(UNALIGNED_ACCESS) && \ 242 ((BYTE_ORDER == LITTLE_ENDIAN) || (BYTE_ORDER == BIG_ENDIAN)) 243 #if BYTE_ORDER == LITTLE_ENDIAN 244 return *(u_int16t *)p; 245 #else 246 return *(u_int16t *)(p + 2); 247 #endif 248 #else /* !UNALIGNED_ACCESS or weird byte order */ 249 return *p|(p[1] << 8); 250 #endif 251 } 252 253 /* 7.3.1: unsigned little-endian 32-bit value. NOT USED IN KERNEL. */ 254 static __inline int 255 isonum_731(p) 256 u_char *p; 257 { 258 #if defined(UNALIGNED_ACCESS) && (BYTE_ORDER == LITTLE_ENDIAN) 259 return *(u_int32t *)p; 260 #else 261 return *p|(p[1] << 8)|(p[2] << 16)|(p[3] << 24); 262 #endif 263 } 264 265 /* 7.3.2: unsigned big-endian 32-bit value. NOT USED IN KERNEL. */ 266 static __inline int 267 isonum_732(p) 268 unsigned char *p; 269 { 270 #if defined(UNALIGNED_ACCESS) && (BYTE_ORDER == BIG_ENDIAN) 271 return *(u_int32t *)p; 272 #else 273 return (*p << 24)|(p[1] << 16)|(p[2] << 8)|p[3]; 274 #endif 275 } 276 277 /* 7.3.3: unsigned both-endian (little, then big) 32-bit value */ 278 static __inline int 279 #if __STDC__ 280 isonum_733(u_char *p) 281 #else 282 isonum_733(p) 283 u_char *p; 284 #endif 285 { 286 #if defined(UNALIGNED_ACCESS) && \ 287 ((BYTE_ORDER == LITTLE_ENDIAN) || (BYTE_ORDER == BIG_ENDIAN)) 288 #if BYTE_ORDER == LITTLE_ENDIAN 289 return *(u_int32t *)p; 290 #else 291 return *(u_int32t *)(p + 4); 292 #endif 293 #else /* !UNALIGNED_ACCESS or weird byte order */ 294 return *p|(p[1] << 8)|(p[2] << 16)|(p[3] << 24); 295 #endif 296 } 297 298 /* 299 * Associated files have a leading '='. 300 */ 301 #define ASSOCCHAR '=' 302
Indexes created Tue Sep 30 11:09:46 GMT 2025