Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/fs/cd9660/iso.h
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1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 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@blitz.com). The Rock Ridge Extension 9 * Support code is derived from software contributed to Berkeley 10 * by Atsushi Murai (amurai@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 * $FreeBSD$ 38 */ 39 40 #define ISODCL(from, to) (to - from + 1) 41 42 struct iso_volume_descriptor { 43 char type[ISODCL(1,1)]; /* 711 */ 44 char id[ISODCL(2,6)]; 45 char version[ISODCL(7,7)]; 46 char unused[ISODCL(8,8)]; 47 char type_sierra[ISODCL(9,9)]; /* 711 */ 48 char id_sierra[ISODCL(10,14)]; 49 char version_sierra[ISODCL(15,15)]; 50 char data[ISODCL(16,2048)]; 51 }; 52 53 /* volume descriptor types */ 54 #define ISO_VD_PRIMARY 1 55 #define ISO_VD_SUPPLEMENTARY 2 56 #define ISO_VD_END 255 57 58 #define ISO_STANDARD_ID "CD001" 59 #define ISO_ECMA_ID "CDW01" 60 61 #define ISO_SIERRA_ID "CDROM" 62 63 struct iso_primary_descriptor { 64 u_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 u_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 } __packed; 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)]; /* 711? */ 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 u_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_sierra_primary_descriptor { 143 char unknown1 [ISODCL ( 1, 8)]; /* 733 */ 144 char type [ISODCL ( 9, 9)]; /* 711 */ 145 char id [ISODCL ( 10, 14)]; 146 char version [ISODCL ( 15, 15)]; /* 711 */ 147 char unused1 [ISODCL ( 16, 16)]; 148 char system_id [ISODCL ( 17, 48)]; /* achars */ 149 char volume_id [ISODCL ( 49, 80)]; /* dchars */ 150 char unused2 [ISODCL ( 81, 88)]; 151 char volume_space_size [ISODCL ( 89, 96)]; /* 733 */ 152 char unused3 [ISODCL ( 97, 128)]; 153 char volume_set_size [ISODCL (129, 132)]; /* 723 */ 154 char volume_sequence_number [ISODCL (133, 136)]; /* 723 */ 155 u_char logical_block_size [ISODCL (137, 140)]; /* 723 */ 156 char path_table_size [ISODCL (141, 148)]; /* 733 */ 157 char type_l_path_table [ISODCL (149, 152)]; /* 731 */ 158 char opt_type_l_path_table [ISODCL (153, 156)]; /* 731 */ 159 char unknown2 [ISODCL (157, 160)]; /* 731 */ 160 char unknown3 [ISODCL (161, 164)]; /* 731 */ 161 char type_m_path_table [ISODCL (165, 168)]; /* 732 */ 162 char opt_type_m_path_table [ISODCL (169, 172)]; /* 732 */ 163 char unknown4 [ISODCL (173, 176)]; /* 732 */ 164 char unknown5 [ISODCL (177, 180)]; /* 732 */ 165 char root_directory_record [ISODCL (181, 214)]; /* 9.1 */ 166 char volume_set_id [ISODCL (215, 342)]; /* dchars */ 167 char publisher_id [ISODCL (343, 470)]; /* achars */ 168 char preparer_id [ISODCL (471, 598)]; /* achars */ 169 char application_id [ISODCL (599, 726)]; /* achars */ 170 char copyright_id [ISODCL (727, 790)]; /* achars */ 171 char creation_date [ISODCL (791, 806)]; /* ? */ 172 char modification_date [ISODCL (807, 822)]; /* ? */ 173 char expiration_date [ISODCL (823, 838)]; /* ? */ 174 char effective_date [ISODCL (839, 854)]; /* ? */ 175 char file_structure_version [ISODCL (855, 855)]; /* 711 */ 176 char unused4 [ISODCL (856, 2048)]; 177 }; 178 179 struct iso_directory_record { 180 u_char length [ISODCL (1, 1)]; /* 711 */ 181 u_char ext_attr_length [ISODCL (2, 2)]; /* 711 */ 182 u_char extent [ISODCL (3, 10)]; /* 733 */ 183 u_char size [ISODCL (11, 18)]; /* 733 */ 184 u_char date [ISODCL (19, 25)]; /* 7 by 711 */ 185 u_char flags [ISODCL (26, 26)]; 186 u_char file_unit_size [ISODCL (27, 27)]; /* 711 */ 187 u_char interleave [ISODCL (28, 28)]; /* 711 */ 188 u_char volume_sequence_number [ISODCL (29, 32)]; /* 723 */ 189 u_char name_len [ISODCL (33, 33)]; /* 711 */ 190 char name [1]; /* XXX */ 191 } __packed; 192 /* can't take sizeof(iso_directory_record), because of possible alignment 193 of the last entry (34 instead of 33) */ 194 #define ISO_DIRECTORY_RECORD_SIZE 33 195 196 struct iso_extended_attributes { 197 u_char owner [ISODCL (1, 4)]; /* 723 */ 198 u_char group [ISODCL (5, 8)]; /* 723 */ 199 u_char perm [ISODCL (9, 10)]; /* 9.5.3 */ 200 char ctime [ISODCL (11, 27)]; /* 8.4.26.1 */ 201 char mtime [ISODCL (28, 44)]; /* 8.4.26.1 */ 202 char xtime [ISODCL (45, 61)]; /* 8.4.26.1 */ 203 char ftime [ISODCL (62, 78)]; /* 8.4.26.1 */ 204 char recfmt [ISODCL (79, 79)]; /* 711 */ 205 char recattr [ISODCL (80, 80)]; /* 711 */ 206 u_char reclen [ISODCL (81, 84)]; /* 723 */ 207 char system_id [ISODCL (85, 116)]; /* achars */ 208 char system_use [ISODCL (117, 180)]; 209 char version [ISODCL (181, 181)]; /* 711 */ 210 char len_esc [ISODCL (182, 182)]; /* 711 */ 211 char reserved [ISODCL (183, 246)]; 212 u_char len_au [ISODCL (247, 250)]; /* 723 */ 213 }; 214 215 #ifdef _KERNEL 216 217 /* CD-ROM Format type */ 218 enum ISO_FTYPE { ISO_FTYPE_DEFAULT, ISO_FTYPE_9660, ISO_FTYPE_RRIP, 219 ISO_FTYPE_JOLIET, ISO_FTYPE_ECMA, ISO_FTYPE_HIGH_SIERRA }; 220 221 #ifndef ISOFSMNT_ROOT 222 #define ISOFSMNT_ROOT 0 223 #endif 224 225 /* 226 * When ino_t becomes 64-bit, we can remove this definition in favor of ino_t. 227 */ 228 typedef __uint64_t cd_ino_t; 229 230 struct iso_mnt { 231 uint64_t im_flags; 232 233 struct mount *im_mountp; 234 struct cdev *im_dev; 235 struct vnode *im_devvp; 236 237 struct g_consumer *im_cp; 238 struct bufobj *im_bo; 239 240 int logical_block_size; 241 int im_bshift; 242 int im_bmask; 243 244 int volume_space_size; 245 246 char root[ISODCL (157, 190)]; 247 int root_extent; 248 int root_size; 249 enum ISO_FTYPE iso_ftype; 250 251 int rr_skip; 252 int rr_skip0; 253 254 int joliet_level; 255 256 void *im_d2l; 257 void *im_l2d; 258 }; 259 260 struct ifid { 261 u_short ifid_len; 262 u_short ifid_pad; 263 cd_ino_t ifid_ino; 264 long ifid_start; 265 }; 266 267 #define VFSTOISOFS(mp) ((struct iso_mnt *)((mp)->mnt_data)) 268 269 #define blkoff(imp, loc) ((loc) & (imp)->im_bmask) 270 #define lblktosize(imp, blk) ((blk) << (imp)->im_bshift) 271 #define lblkno(imp, loc) ((loc) >> (imp)->im_bshift) 272 #define blksize(imp, ip, lbn) ((imp)->logical_block_size) 273 274 int cd9660_vget_internal(struct mount *, cd_ino_t, int, struct vnode **, int, 275 struct iso_directory_record *); 276 #define cd9660_sysctl ((int (*)(int *, u_int, void *, size_t *, void *, \ 277 size_t, struct proc *))eopnotsupp) 278 279 extern struct vop_vector cd9660_vnodeops; 280 extern struct vop_vector cd9660_fifoops; 281 282 int isochar(u_char *, u_char *, int, u_short *, int *, int, void *); 283 int isofncmp(u_char *, int, u_char *, int, int, int, void *, void *); 284 void isofntrans(u_char *, int, u_char *, u_short *, int, int, int, int, void *); 285 cd_ino_t isodirino(struct iso_directory_record *, struct iso_mnt *); 286 u_short sgetrune(const char *, size_t, char const **, int, void *); 287 288 #endif /* _KERNEL */ 289 290 /* 291 * The isonum_xxx functions are inlined anyway, and could come handy even 292 * outside the kernel. Thus we don't hide them here. 293 */ 294 295 /* 296 * 7xy 297 * x -> 1 = 8 bits, 2 = 16 bits, 3 = 32 bits 298 * y -> 1 = little-endian, 2 = big-endian, 3 = both (le then be) 299 */ 300 301 static __inline uint8_t 302 isonum_711(const unsigned char *p) 303 { 304 305 return (p[0]); 306 } 307 308 static __inline int8_t 309 isonum_712(const unsigned char *p) 310 { 311 312 return ((signed char)p[0]); 313 } 314 315 static __inline uint8_t 316 isonum_713(const unsigned char *p) 317 { 318 319 return (p[0]); 320 } 321 322 static __inline uint16_t 323 isonum_721(const unsigned char *p) 324 { 325 326 return (p[0] | p[1] << 8); 327 } 328 329 static __inline uint16_t 330 isonum_722(const unsigned char *p) 331 { 332 333 return (p[1] | p[0] << 8); 334 } 335 336 static __inline uint16_t 337 isonum_723(const unsigned char *p) 338 { 339 340 return (p[0] | p[1] << 8); 341 } 342 343 static __inline uint32_t 344 isonum_731(const unsigned char *p) 345 { 346 347 return (p[0] | p[1] << 8 | p[2] << 16 | p[3] << 24); 348 } 349 350 static __inline uint32_t 351 isonum_732(const unsigned char *p) 352 { 353 354 return (p[3] | p[2] << 8 | p[1] << 16 | p[0] << 24); 355 } 356 357 static __inline uint32_t 358 isonum_733(const unsigned char *p) 359 { 360 361 return (p[0] | p[1] << 8 | p[2] << 16 | p[3] << 24); 362 } 363 364 /* 365 * Associated files have a leading '='. 366 */ 367 #define ASSOCCHAR '='
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