iso.h revision 1.6
1 /* $NetBSD: iso.h,v 1.6 2005/12/03 17:34:43 christos 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. 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 #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_SIZE 2048 101 102 struct iso_supplementary_descriptor { 103 char type [ISODCL ( 1, 1)]; /* 711 */ 104 char id [ISODCL ( 2, 6)]; 105 char version [ISODCL ( 7, 7)]; /* 711 */ 106 char flags [ISODCL ( 8, 8)]; /* 711? */ 107 char system_id [ISODCL ( 9, 40)]; /* achars */ 108 char volume_id [ISODCL ( 41, 72)]; /* dchars */ 109 char unused2 [ISODCL ( 73, 80)]; 110 char volume_space_size [ISODCL ( 81, 88)]; /* 733 */ 111 char escape [ISODCL ( 89, 120)]; 112 char volume_set_size [ISODCL (121, 124)]; /* 723 */ 113 char volume_sequence_number [ISODCL (125, 128)]; /* 723 */ 114 char logical_block_size [ISODCL (129, 132)]; /* 723 */ 115 char path_table_size [ISODCL (133, 140)]; /* 733 */ 116 char type_l_path_table [ISODCL (141, 144)]; /* 731 */ 117 char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */ 118 char type_m_path_table [ISODCL (149, 152)]; /* 732 */ 119 char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */ 120 char root_directory_record [ISODCL (157, 190)]; /* 9.1 */ 121 char volume_set_id [ISODCL (191, 318)]; /* dchars */ 122 char publisher_id [ISODCL (319, 446)]; /* achars */ 123 char preparer_id [ISODCL (447, 574)]; /* achars */ 124 char application_id [ISODCL (575, 702)]; /* achars */ 125 char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */ 126 char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */ 127 char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */ 128 char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */ 129 char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */ 130 char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */ 131 char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */ 132 char file_structure_version [ISODCL (882, 882)]; /* 711 */ 133 char unused4 [ISODCL (883, 883)]; 134 char application_data [ISODCL (884, 1395)]; 135 char unused5 [ISODCL (1396, 2048)]; 136 }; 137 138 struct iso_directory_record { 139 char length [ISODCL (1, 1)]; /* 711 */ 140 char ext_attr_length [ISODCL (2, 2)]; /* 711 */ 141 u_char extent [ISODCL (3, 10)]; /* 733 */ 142 u_char size [ISODCL (11, 18)]; /* 733 */ 143 char date [ISODCL (19, 25)]; /* 7 by 711 */ 144 char flags [ISODCL (26, 26)]; 145 char file_unit_size [ISODCL (27, 27)]; /* 711 */ 146 char interleave [ISODCL (28, 28)]; /* 711 */ 147 char volume_sequence_number [ISODCL (29, 32)]; /* 723 */ 148 char name_len [ISODCL (33, 33)]; /* 711 */ 149 char name [1]; /* XXX */ 150 }; 151 /* can't take sizeof(iso_directory_record), because of possible alignment 152 of the last entry (34 instead of 33) */ 153 #define ISO_DIRECTORY_RECORD_SIZE 33 154 155 struct iso_extended_attributes { 156 u_char owner [ISODCL (1, 4)]; /* 723 */ 157 u_char group [ISODCL (5, 8)]; /* 723 */ 158 u_char perm [ISODCL (9, 10)]; /* 9.5.3 */ 159 char ctime [ISODCL (11, 27)]; /* 8.4.26.1 */ 160 char mtime [ISODCL (28, 44)]; /* 8.4.26.1 */ 161 char xtime [ISODCL (45, 61)]; /* 8.4.26.1 */ 162 char ftime [ISODCL (62, 78)]; /* 8.4.26.1 */ 163 char recfmt [ISODCL (79, 79)]; /* 711 */ 164 char recattr [ISODCL (80, 80)]; /* 711 */ 165 u_char reclen [ISODCL (81, 84)]; /* 723 */ 166 char system_id [ISODCL (85, 116)]; /* achars */ 167 char system_use [ISODCL (117, 180)]; 168 char version [ISODCL (181, 181)]; /* 711 */ 169 char len_esc [ISODCL (182, 182)]; /* 711 */ 170 char reserved [ISODCL (183, 246)]; 171 u_char len_au [ISODCL (247, 250)]; /* 723 */ 172 }; 173 174 static __inline int isonum_711(u_char *) __attribute__ ((unused)); 175 static __inline int isonum_712(char *) __attribute__ ((unused)); 176 static __inline uint16_t isonum_721(u_char *) __attribute__ ((unused)); 177 static __inline uint16_t isonum_722(u_char *) __attribute__ ((unused)); 178 static __inline uint16_t isonum_723(u_char *) __attribute__ ((unused)); 179 static __inline uint32_t isonum_731(u_char *) __attribute__ ((unused)); 180 static __inline uint32_t isonum_732(u_char *) __attribute__ ((unused)); 181 static __inline uint32_t isonum_733(u_char *) __attribute__ ((unused)); 182 183 /* 7.1.1: unsigned char */ 184 static __inline int 185 isonum_711(u_char *p) 186 { 187 return *p; 188 } 189 190 /* 7.1.2: signed(?) char */ 191 static __inline int 192 isonum_712(char *p) 193 { 194 return *p; 195 } 196 197 /* 7.2.1: unsigned little-endian 16-bit value. NOT USED IN KERNEL. */ 198 static __inline uint16_t 199 isonum_721(u_char *p) 200 { 201 #if defined(UNALIGNED_ACCESS) && (BYTE_ORDER == LITTLE_ENDIAN) 202 return *(uint16_t *)p; 203 #else 204 return *p|((char)p[1] << 8); 205 #endif 206 } 207 208 /* 7.2.2: unsigned big-endian 16-bit value. NOT USED IN KERNEL. */ 209 static __inline uint16_t 210 isonum_722(u_char *p) 211 { 212 #if defined(UNALIGNED_ACCESS) && (BYTE_ORDER == BIG_ENDIAN) 213 return *(uint16_t *)p; 214 #else 215 return ((char)*p << 8)|p[1]; 216 #endif 217 } 218 219 /* 7.2.3: unsigned both-endian (little, then big) 16-bit value */ 220 static __inline uint16_t 221 isonum_723(u_char *p) 222 { 223 #if defined(UNALIGNED_ACCESS) && \ 224 ((BYTE_ORDER == LITTLE_ENDIAN) || (BYTE_ORDER == BIG_ENDIAN)) 225 #if BYTE_ORDER == LITTLE_ENDIAN 226 return *(uint16_t *)p; 227 #else 228 return *(uint16_t *)(p + 2); 229 #endif 230 #else /* !UNALIGNED_ACCESS or weird byte order */ 231 return *p|(p[1] << 8); 232 #endif 233 } 234 235 /* 7.3.1: unsigned little-endian 32-bit value. NOT USED IN KERNEL. */ 236 static __inline uint32_t 237 isonum_731(u_char *p) 238 { 239 #if defined(UNALIGNED_ACCESS) && (BYTE_ORDER == LITTLE_ENDIAN) 240 return *(uint32_t *)p; 241 #else 242 return *p|(p[1] << 8)|(p[2] << 16)|(p[3] << 24); 243 #endif 244 } 245 246 /* 7.3.2: unsigned big-endian 32-bit value. NOT USED IN KERNEL. */ 247 static __inline uint32_t 248 isonum_732(u_char *p) 249 { 250 #if defined(UNALIGNED_ACCESS) && (BYTE_ORDER == BIG_ENDIAN) 251 return *(uint32_t *)p; 252 #else 253 return (*p << 24)|(p[1] << 16)|(p[2] << 8)|p[3]; 254 #endif 255 } 256 257 /* 7.3.3: unsigned both-endian (little, then big) 32-bit value */ 258 static __inline uint32_t 259 isonum_733(u_char *p) 260 { 261 #if defined(UNALIGNED_ACCESS) && \ 262 ((BYTE_ORDER == LITTLE_ENDIAN) || (BYTE_ORDER == BIG_ENDIAN)) 263 #if BYTE_ORDER == LITTLE_ENDIAN 264 return *(uint32_t *)p; 265 #else 266 return *(uint32_t *)(p + 4); 267 #endif 268 #else /* !UNALIGNED_ACCESS or weird byte order */ 269 return *p|(p[1] << 8)|(p[2] << 16)|(p[3] << 24); 270 #endif 271 } 272 273 /* 274 * Associated files have a leading '='. 275 */ 276 #define ASSOCCHAR '=' 277 278 #endif /* _ISOFS_CD9660_ISO_H_ */ 279
Indexes created Tue Sep 30 11:09:46 GMT 2025