1 /* $OpenBSD: iso.h,v 1.14 2005/09/28 20:53:54 miod 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 #define ISODCL(from, to) (to - from + 1) 47 48 struct iso_volume_descriptor { 49 char type[ISODCL(1,1)]; /* 711 */ 50 char id[ISODCL(2,6)]; 51 char version[ISODCL(7,7)]; 52 char data[ISODCL(8,2048)]; 53 }; 54 55 /* volume descriptor types */ 56 #define ISO_VD_PRIMARY 1 57 #define ISO_VD_SUPPLEMENTARY 2 58 #define ISO_VD_END 255 59 60 #define ISO_STANDARD_ID "CD001" 61 #define ISO_ECMA_ID "CDW01" 62 63 struct iso_primary_descriptor { 64 char type [ISODCL ( 1, 1)]; /* 711 */ 65 char id [ISODCL ( 2, 6)]; 66 char version [ISODCL ( 7, 7)]; /* 711 */ 67 char unused1 [ISODCL ( 8, 8)]; 68 char system_id [ISODCL ( 9, 40)]; /* achars */ 69 char volume_id [ISODCL ( 41, 72)]; /* dchars */ 70 char unused2 [ISODCL ( 73, 80)]; 71 char volume_space_size [ISODCL ( 81, 88)]; /* 733 */ 72 char unused3 [ISODCL ( 89, 120)]; 73 char volume_set_size [ISODCL (121, 124)]; /* 723 */ 74 char volume_sequence_number [ISODCL (125, 128)]; /* 723 */ 75 char logical_block_size [ISODCL (129, 132)]; /* 723 */ 76 char path_table_size [ISODCL (133, 140)]; /* 733 */ 77 char type_l_path_table [ISODCL (141, 144)]; /* 731 */ 78 char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */ 79 char type_m_path_table [ISODCL (149, 152)]; /* 732 */ 80 char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */ 81 char root_directory_record [ISODCL (157, 190)]; /* 9.1 */ 82 char volume_set_id [ISODCL (191, 318)]; /* dchars */ 83 char publisher_id [ISODCL (319, 446)]; /* achars */ 84 char preparer_id [ISODCL (447, 574)]; /* achars */ 85 char application_id [ISODCL (575, 702)]; /* achars */ 86 char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */ 87 char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */ 88 char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */ 89 char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */ 90 char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */ 91 char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */ 92 char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */ 93 char file_structure_version [ISODCL (882, 882)]; /* 711 */ 94 char unused4 [ISODCL (883, 883)]; 95 char application_data [ISODCL (884, 1395)]; 96 char unused5 [ISODCL (1396, 2048)]; 97 }; 98 #define ISO_DEFAULT_BLOCK_SHIFT 11 99 #define ISO_DEFAULT_BLOCK_SIZE (1<<ISO_DEFAULT_BLOCK_SHIFT) 100 101 /* 102 * Used by Microsoft Joliet extension to ISO9660. Almost the same 103 * as PVD, but byte position 8 is a flag, and 89-120 is for escape. 104 */ 105 106 struct 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)]; 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 }; 141 142 struct 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 33 158 159 struct 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 static __inline int isonum_711(u_char *) __attribute__ ((__unused__)); 179 static __inline int isonum_712(char *) __attribute__ ((__unused__)); 180 static __inline int isonum_721(u_char *) __attribute__ ((__unused__)); 181 static __inline int isonum_722(u_char *) __attribute__ ((__unused__)); 182 static __inline int isonum_723(u_char *) __attribute__ ((__unused__)); 183 static __inline int isonum_731(u_char *) __attribute__ ((__unused__)); 184 static __inline int isonum_732(u_char *) __attribute__ ((__unused__)); 185 static __inline int isonum_733(u_char *) __attribute__ ((__unused__)); 186 187 /* 7.1.1: unsigned char */ 188 static __inline int 189 isonum_711(u_char *p) 190 { 191 return *p; 192 } 193 194 /* 7.1.2: signed(?) char */ 195 static __inline int 196 isonum_712(char *p) 197 { 198 return *p; 199 } 200 201 /* 7.2.1: unsigned little-endian 16-bit value. NOT USED IN KERNEL. */ 202 static __inline int 203 isonum_721(p) 204 u_char *p; 205 { 206 #if !defined(__STRICT_ALIGNMENT) && (BYTE_ORDER == LITTLE_ENDIAN) 207 return *(u_int16_t *)p; 208 #else 209 return *p|((char)p[1] << 8); 210 #endif 211 } 212 213 /* 7.2.2: unsigned big-endian 16-bit value. NOT USED IN KERNEL. */ 214 static __inline int 215 isonum_722(p) 216 unsigned char *p; 217 { 218 #if !defined(__STRICT_ALIGNMENT) && (BYTE_ORDER == BIG_ENDIAN) 219 return *(u_int16_t *)p; 220 #else 221 return ((char)*p << 8)|p[1]; 222 #endif 223 } 224 225 /* 7.2.3: unsigned both-endian (little, then big) 16-bit value */ 226 static __inline int 227 isonum_723(u_char *p) 228 { 229 #if !defined(__STRICT_ALIGNMENT) && \ 230 ((BYTE_ORDER == LITTLE_ENDIAN) || (BYTE_ORDER == BIG_ENDIAN)) 231 #if BYTE_ORDER == LITTLE_ENDIAN 232 return *(u_int16_t *)p; 233 #else 234 return *(u_int16_t *)(p + 2); 235 #endif 236 #else /* __STRICT_ALIGNMENT or weird byte order */ 237 return *p|(p[1] << 8); 238 #endif 239 } 240 241 /* 7.3.1: unsigned little-endian 32-bit value. NOT USED IN KERNEL. */ 242 static __inline int 243 isonum_731(p) 244 u_char *p; 245 { 246 #if !defined(__STRICT_ALIGNMENT) && (BYTE_ORDER == LITTLE_ENDIAN) 247 return *(u_int32_t *)p; 248 #else 249 return *p|(p[1] << 8)|(p[2] << 16)|(p[3] << 24); 250 #endif 251 } 252 253 /* 7.3.2: unsigned big-endian 32-bit value. NOT USED IN KERNEL. */ 254 static __inline int 255 isonum_732(p) 256 unsigned char *p; 257 { 258 #if !defined(__STRICT_ALIGNMENT) && (BYTE_ORDER == BIG_ENDIAN) 259 return *(u_int32_t *)p; 260 #else 261 return (*p << 24)|(p[1] << 16)|(p[2] << 8)|p[3]; 262 #endif 263 } 264 265 /* 7.3.3: unsigned both-endian (little, then big) 32-bit value */ 266 static __inline int 267 isonum_733(u_char *p) 268 { 269 #if !defined(__STRICT_ALIGNMENT) && \ 270 ((BYTE_ORDER == LITTLE_ENDIAN) || (BYTE_ORDER == BIG_ENDIAN)) 271 #if BYTE_ORDER == LITTLE_ENDIAN 272 return *(u_int32_t *)p; 273 #else 274 return *(u_int32_t *)(p + 4); 275 #endif 276 #else /* __STRICT_ALIGNMENT or weird byte order */ 277 return *p|(p[1] << 8)|(p[2] << 16)|(p[3] << 24); 278 #endif 279 } 280 281 /* 282 * Associated files have a leading '='. 283 */ 284 #define ASSOCCHAR '=' 285