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 */ 38 39 #ifndef _ISOFS_CD9660_ISO_H_ 40 #define _ISOFS_CD9660_ISO_H_ 41 42 #define ISODCL(from, to) (to - from + 1) 43 44 struct iso_volume_descriptor { 45 char type[ISODCL(1,1)]; /* 711 */ 46 char id[ISODCL(2,6)]; 47 char version[ISODCL(7,7)]; 48 char unused[ISODCL(8,8)]; 49 char type_sierra[ISODCL(9,9)]; /* 711 */ 50 char id_sierra[ISODCL(10,14)]; 51 char version_sierra[ISODCL(15,15)]; 52 char data[ISODCL(16,2048)]; 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 #define ISO_SIERRA_ID "CDROM" 64 65 struct iso_primary_descriptor { 66 u_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 u_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 } __packed; 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)]; /* 711? */ 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 u_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_sierra_primary_descriptor { 145 char unknown1 [ISODCL ( 1, 8)]; /* 733 */ 146 char type [ISODCL ( 9, 9)]; /* 711 */ 147 char id [ISODCL ( 10, 14)]; 148 char version [ISODCL ( 15, 15)]; /* 711 */ 149 char unused1 [ISODCL ( 16, 16)]; 150 char system_id [ISODCL ( 17, 48)]; /* achars */ 151 char volume_id [ISODCL ( 49, 80)]; /* dchars */ 152 char unused2 [ISODCL ( 81, 88)]; 153 char volume_space_size [ISODCL ( 89, 96)]; /* 733 */ 154 char unused3 [ISODCL ( 97, 128)]; 155 char volume_set_size [ISODCL (129, 132)]; /* 723 */ 156 char volume_sequence_number [ISODCL (133, 136)]; /* 723 */ 157 u_char logical_block_size [ISODCL (137, 140)]; /* 723 */ 158 char path_table_size [ISODCL (141, 148)]; /* 733 */ 159 char type_l_path_table [ISODCL (149, 152)]; /* 731 */ 160 char opt_type_l_path_table [ISODCL (153, 156)]; /* 731 */ 161 char unknown2 [ISODCL (157, 160)]; /* 731 */ 162 char unknown3 [ISODCL (161, 164)]; /* 731 */ 163 char type_m_path_table [ISODCL (165, 168)]; /* 732 */ 164 char opt_type_m_path_table [ISODCL (169, 172)]; /* 732 */ 165 char unknown4 [ISODCL (173, 176)]; /* 732 */ 166 char unknown5 [ISODCL (177, 180)]; /* 732 */ 167 char root_directory_record [ISODCL (181, 214)]; /* 9.1 */ 168 char volume_set_id [ISODCL (215, 342)]; /* dchars */ 169 char publisher_id [ISODCL (343, 470)]; /* achars */ 170 char preparer_id [ISODCL (471, 598)]; /* achars */ 171 char application_id [ISODCL (599, 726)]; /* achars */ 172 char copyright_id [ISODCL (727, 790)]; /* achars */ 173 char creation_date [ISODCL (791, 806)]; /* ? */ 174 char modification_date [ISODCL (807, 822)]; /* ? */ 175 char expiration_date [ISODCL (823, 838)]; /* ? */ 176 char effective_date [ISODCL (839, 854)]; /* ? */ 177 char file_structure_version [ISODCL (855, 855)]; /* 711 */ 178 char unused4 [ISODCL (856, 2048)]; 179 }; 180 181 struct iso_directory_record { 182 u_char length [ISODCL (1, 1)]; /* 711 */ 183 u_char ext_attr_length [ISODCL (2, 2)]; /* 711 */ 184 u_char extent [ISODCL (3, 10)]; /* 733 */ 185 u_char size [ISODCL (11, 18)]; /* 733 */ 186 u_char date [ISODCL (19, 25)]; /* 7 by 711 */ 187 u_char flags [ISODCL (26, 26)]; 188 u_char file_unit_size [ISODCL (27, 27)]; /* 711 */ 189 u_char interleave [ISODCL (28, 28)]; /* 711 */ 190 u_char volume_sequence_number [ISODCL (29, 32)]; /* 723 */ 191 u_char name_len [ISODCL (33, 33)]; /* 711 */ 192 char name [1]; /* XXX */ 193 } __packed; 194 /* can't take sizeof(iso_directory_record), because of possible alignment 195 of the last entry (34 instead of 33) */ 196 #define ISO_DIRECTORY_RECORD_SIZE 33 197 198 struct iso_extended_attributes { 199 u_char owner [ISODCL (1, 4)]; /* 723 */ 200 u_char group [ISODCL (5, 8)]; /* 723 */ 201 u_char perm [ISODCL (9, 10)]; /* 9.5.3 */ 202 char ctime [ISODCL (11, 27)]; /* 8.4.26.1 */ 203 char mtime [ISODCL (28, 44)]; /* 8.4.26.1 */ 204 char xtime [ISODCL (45, 61)]; /* 8.4.26.1 */ 205 char ftime [ISODCL (62, 78)]; /* 8.4.26.1 */ 206 char recfmt [ISODCL (79, 79)]; /* 711 */ 207 char recattr [ISODCL (80, 80)]; /* 711 */ 208 u_char reclen [ISODCL (81, 84)]; /* 723 */ 209 char system_id [ISODCL (85, 116)]; /* achars */ 210 char system_use [ISODCL (117, 180)]; 211 char version [ISODCL (181, 181)]; /* 711 */ 212 char len_esc [ISODCL (182, 182)]; /* 711 */ 213 char reserved [ISODCL (183, 246)]; 214 u_char len_au [ISODCL (247, 250)]; /* 723 */ 215 }; 216 217 #ifdef _KERNEL 218 219 /* CD-ROM Format type */ 220 enum ISO_FTYPE { ISO_FTYPE_DEFAULT, ISO_FTYPE_9660, ISO_FTYPE_RRIP, 221 ISO_FTYPE_JOLIET, ISO_FTYPE_ECMA, ISO_FTYPE_HIGH_SIERRA }; 222 223 #ifndef ISOFSMNT_ROOT 224 #define ISOFSMNT_ROOT 0 225 #endif 226 227 /* 228 * When ino_t becomes 64-bit, we can remove this definition in favor of ino_t. 229 */ 230 typedef __uint64_t cd_ino_t; 231 232 struct iso_mnt { 233 uint64_t im_flags; 234 235 struct mount *im_mountp; 236 struct cdev *im_dev; 237 struct vnode *im_devvp; 238 239 struct g_consumer *im_cp; 240 struct bufobj *im_bo; 241 242 int logical_block_size; 243 int im_bshift; 244 int im_bmask; 245 246 int volume_space_size; 247 248 char root[ISODCL (157, 190)]; 249 int root_extent; 250 int root_size; 251 enum ISO_FTYPE iso_ftype; 252 253 int rr_skip; 254 int rr_skip0; 255 256 int joliet_level; 257 258 void *im_d2l; 259 void *im_l2d; 260 }; 261 262 struct ifid { 263 u_short ifid_len; 264 u_short ifid_pad; 265 cd_ino_t ifid_ino; 266 long ifid_start; 267 }; 268 269 #define VFSTOISOFS(mp) ((struct iso_mnt *)((mp)->mnt_data)) 270 271 #define blkoff(imp, loc) ((loc) & (imp)->im_bmask) 272 #define lblktosize(imp, blk) ((blk) << (imp)->im_bshift) 273 #define lblkno(imp, loc) ((loc) >> (imp)->im_bshift) 274 #define blksize(imp, ip, lbn) ((imp)->logical_block_size) 275 276 int cd9660_vget_internal(struct mount *, cd_ino_t, int, struct vnode **, int, 277 struct iso_directory_record *); 278 #define cd9660_sysctl ((int (*)(int *, u_int, void *, size_t *, void *, \ 279 size_t, struct proc *))eopnotsupp) 280 281 extern struct vop_vector cd9660_vnodeops; 282 extern struct vop_vector cd9660_fifoops; 283 284 int isochar(u_char *, u_char *, int, u_short *, int *, int, void *); 285 int isofncmp(u_char *, int, u_char *, int, int, int, void *, void *); 286 void isofntrans(u_char *, int, u_char *, u_short *, int, int, int, int, void *); 287 cd_ino_t isodirino(struct iso_directory_record *, struct iso_mnt *); 288 u_short sgetrune(const char *, size_t, char const **, int, void *); 289 290 #endif /* _KERNEL */ 291 292 /* 293 * The isonum_xxx functions are inlined anyway, and could come handy even 294 * outside the kernel. Thus we don't hide them here. 295 */ 296 297 /* 298 * 7xy 299 * x -> 1 = 8 bits, 2 = 16 bits, 3 = 32 bits 300 * y -> 1 = little-endian, 2 = big-endian, 3 = both (le then be) 301 */ 302 303 static __inline uint8_t 304 isonum_711(const unsigned char *p) 305 { 306 307 return (p[0]); 308 } 309 310 static __inline int8_t 311 isonum_712(const unsigned char *p) 312 { 313 314 return ((signed char)p[0]); 315 } 316 317 static __inline uint8_t 318 isonum_713(const unsigned char *p) 319 { 320 321 return (p[0]); 322 } 323 324 static __inline uint16_t 325 isonum_721(const unsigned char *p) 326 { 327 328 return (p[0] | p[1] << 8); 329 } 330 331 static __inline uint16_t 332 isonum_722(const unsigned char *p) 333 { 334 335 return (p[1] | p[0] << 8); 336 } 337 338 static __inline uint16_t 339 isonum_723(const unsigned char *p) 340 { 341 342 return (p[0] | p[1] << 8); 343 } 344 345 static __inline uint32_t 346 isonum_731(const unsigned char *p) 347 { 348 349 return (p[0] | p[1] << 8 | p[2] << 16 | p[3] << 24); 350 } 351 352 static __inline uint32_t 353 isonum_732(const unsigned char *p) 354 { 355 356 return (p[3] | p[2] << 8 | p[1] << 16 | p[0] << 24); 357 } 358 359 static __inline uint32_t 360 isonum_733(const unsigned char *p) 361 { 362 363 return (p[0] | p[1] << 8 | p[2] << 16 | p[3] << 24); 364 } 365 366 /* 367 * Associated files have a leading '='. 368 */ 369 #define ASSOCCHAR '=' 370 371 #endif /* _ISOFS_CD9660_ISO_H_ */ 372