1 /* $NetBSD: cd9660_eltorito.c,v 1.23 2018/03/28 06:48:55 nonaka Exp $ */ 2 3 /* 4 * Copyright (c) 2005 Daniel Watt, Walter Deignan, Ryan Gabrys, Alan 5 * Perez-Rathke and Ram Vedam. All rights reserved. 6 * 7 * This code was written by Daniel Watt, Walter Deignan, Ryan Gabrys, 8 * Alan Perez-Rathke and Ram Vedam. 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer in the documentation and/or other materials provided 18 * with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY DANIEL WATT, WALTER DEIGNAN, RYAN 21 * GABRYS, ALAN PEREZ-RATHKE AND RAM VEDAM ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 24 * DISCLAIMED. IN NO EVENT SHALL DANIEL WATT, WALTER DEIGNAN, RYAN 25 * GABRYS, ALAN PEREZ-RATHKE AND RAM VEDAM BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 28 * USE,DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 29 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 32 * OF SUCH DAMAGE. 33 */ 34 35 36 #include "cd9660.h" 37 #include "cd9660_eltorito.h" 38 #include <sys/bootblock.h> 39 #include <util.h> 40 41 #include <sys/cdefs.h> 42 #if defined(__RCSID) && !defined(__lint) 43 __RCSID("$NetBSD: cd9660_eltorito.c,v 1.23 2018/03/28 06:48:55 nonaka Exp $"); 44 #endif /* !__lint */ 45 46 #ifdef DEBUG 47 #define ELTORITO_DPRINTF(__x) printf __x 48 #else 49 #define ELTORITO_DPRINTF(__x) 50 #endif 51 52 #include <util.h> 53 54 static struct boot_catalog_entry *cd9660_init_boot_catalog_entry(void); 55 static struct boot_catalog_entry *cd9660_boot_setup_validation_entry(char); 56 static struct boot_catalog_entry *cd9660_boot_setup_default_entry( 57 struct cd9660_boot_image *); 58 static struct boot_catalog_entry *cd9660_boot_setup_section_head(char); 59 #if 0 60 static u_char cd9660_boot_get_system_type(struct cd9660_boot_image *); 61 #endif 62 63 static struct cd9660_boot_image *default_boot_image; 64 65 int 66 cd9660_add_boot_disk(iso9660_disk *diskStructure, const char *boot_info) 67 { 68 struct stat stbuf; 69 const char *mode_msg; 70 char *temp; 71 char *sysname; 72 char *filename; 73 struct cd9660_boot_image *new_image, *tmp_image; 74 75 assert(boot_info != NULL); 76 77 if (*boot_info == '\0') { 78 warnx("Error: Boot disk information must be in the " 79 "format 'system;filename'"); 80 return 0; 81 } 82 83 /* First decode the boot information */ 84 temp = estrdup(boot_info); 85 86 sysname = temp; 87 filename = strchr(sysname, ';'); 88 if (filename == NULL) { 89 warnx("supply boot disk information in the format " 90 "'system;filename'"); 91 free(temp); 92 return 0; 93 } 94 95 *filename++ = '\0'; 96 97 if (diskStructure->verbose_level > 0) { 98 printf("Found bootdisk with system %s, and filename %s\n", 99 sysname, filename); 100 } 101 new_image = ecalloc(1, sizeof(*new_image)); 102 new_image->loadSegment = 0; /* default for now */ 103 104 /* Decode System */ 105 if (strcmp(sysname, "i386") == 0) 106 new_image->system = ET_SYS_X86; 107 else if (strcmp(sysname, "powerpc") == 0) 108 new_image->system = ET_SYS_PPC; 109 else if (strcmp(sysname, "macppc") == 0 || 110 strcmp(sysname, "mac68k") == 0) 111 new_image->system = ET_SYS_MAC; 112 else { 113 warnx("boot disk system must be " 114 "i386, powerpc, macppc, or mac68k"); 115 free(temp); 116 free(new_image); 117 return 0; 118 } 119 120 121 new_image->filename = estrdup(filename); 122 123 free(temp); 124 125 /* Get information about the file */ 126 if (lstat(new_image->filename, &stbuf) == -1) 127 err(EXIT_FAILURE, "%s: lstat(\"%s\")", __func__, 128 new_image->filename); 129 130 switch (stbuf.st_size) { 131 case 1440 * 1024: 132 new_image->targetMode = ET_MEDIA_144FDD; 133 mode_msg = "Assigned boot image to 1.44 emulation mode"; 134 break; 135 case 1200 * 1024: 136 new_image->targetMode = ET_MEDIA_12FDD; 137 mode_msg = "Assigned boot image to 1.2 emulation mode"; 138 break; 139 case 2880 * 1024: 140 new_image->targetMode = ET_MEDIA_288FDD; 141 mode_msg = "Assigned boot image to 2.88 emulation mode"; 142 break; 143 default: 144 new_image->targetMode = ET_MEDIA_NOEM; 145 mode_msg = "Assigned boot image to no emulation mode"; 146 break; 147 } 148 149 if (diskStructure->verbose_level > 0) 150 printf("%s\n", mode_msg); 151 152 new_image->size = stbuf.st_size; 153 new_image->num_sectors = 154 howmany(new_image->size, diskStructure->sectorSize) * 155 howmany(diskStructure->sectorSize, 512); 156 if (diskStructure->verbose_level > 0) { 157 printf("New image has size %d, uses %d 512-byte sectors\n", 158 new_image->size, new_image->num_sectors); 159 } 160 new_image->sector = -1; 161 /* Bootable by default */ 162 new_image->bootable = ET_BOOTABLE; 163 /* Add boot disk */ 164 165 /* Group images for the same platform together. */ 166 TAILQ_FOREACH(tmp_image, &diskStructure->boot_images, image_list) { 167 if (tmp_image->system != new_image->system) 168 break; 169 } 170 171 if (tmp_image == NULL) { 172 TAILQ_INSERT_HEAD(&diskStructure->boot_images, new_image, 173 image_list); 174 } else 175 TAILQ_INSERT_BEFORE(tmp_image, new_image, image_list); 176 177 new_image->serialno = diskStructure->image_serialno++; 178 179 new_image->platform_id = new_image->system; 180 181 /* TODO : Need to do anything about the boot image in the tree? */ 182 diskStructure->is_bootable = 1; 183 184 /* First boot image is initial/default entry. */ 185 if (default_boot_image == NULL) 186 default_boot_image = new_image; 187 188 return 1; 189 } 190 191 int 192 cd9660_eltorito_add_boot_option(iso9660_disk *diskStructure, 193 const char *option_string, const char *value) 194 { 195 char *eptr; 196 struct cd9660_boot_image *image; 197 198 assert(option_string != NULL); 199 200 /* Find the last image added */ 201 TAILQ_FOREACH(image, &diskStructure->boot_images, image_list) { 202 if (image->serialno + 1 == diskStructure->image_serialno) 203 break; 204 } 205 if (image == NULL) 206 errx(EXIT_FAILURE, "Attempted to add boot option, " 207 "but no boot images have been specified"); 208 209 if (strcmp(option_string, "no-emul-boot") == 0) { 210 image->targetMode = ET_MEDIA_NOEM; 211 } else if (strcmp(option_string, "no-boot") == 0) { 212 image->bootable = ET_NOT_BOOTABLE; 213 } else if (strcmp(option_string, "hard-disk-boot") == 0) { 214 image->targetMode = ET_MEDIA_HDD; 215 } else if (strcmp(option_string, "boot-load-segment") == 0) { 216 image->loadSegment = strtoul(value, &eptr, 16); 217 if (eptr == value || *eptr != '\0' || errno != ERANGE) { 218 warn("%s: strtoul", __func__); 219 return 0; 220 } 221 } else if (strcmp(option_string, "platformid") == 0) { 222 if (strcmp(value, "efi") == 0) 223 image->platform_id = ET_SYS_EFI; 224 else { 225 warn("%s: unknown platform: %s", __func__, value); 226 return 0; 227 } 228 } else { 229 return 0; 230 } 231 return 1; 232 } 233 234 static struct boot_catalog_entry * 235 cd9660_init_boot_catalog_entry(void) 236 { 237 return ecalloc(1, sizeof(struct boot_catalog_entry)); 238 } 239 240 static struct boot_catalog_entry * 241 cd9660_boot_setup_validation_entry(char sys) 242 { 243 struct boot_catalog_entry *entry; 244 boot_catalog_validation_entry *ve; 245 int16_t checksum; 246 unsigned char *csptr; 247 size_t i; 248 entry = cd9660_init_boot_catalog_entry(); 249 250 entry->entry_type = ET_ENTRY_VE; 251 ve = &entry->entry_data.VE; 252 253 ve->header_id[0] = 1; 254 ve->platform_id[0] = sys; 255 ve->key[0] = 0x55; 256 ve->key[1] = 0xAA; 257 258 /* Calculate checksum */ 259 checksum = 0; 260 cd9660_721(0, ve->checksum); 261 csptr = (unsigned char*)ve; 262 for (i = 0; i < sizeof(*ve); i += 2) { 263 checksum += (int16_t)csptr[i]; 264 checksum += 256 * (int16_t)csptr[i + 1]; 265 } 266 checksum = -checksum; 267 cd9660_721(checksum, ve->checksum); 268 269 ELTORITO_DPRINTF(("%s: header_id %d, platform_id %d, key[0] %d, key[1] %d, " 270 "checksum %04x\n", __func__, ve->header_id[0], ve->platform_id[0], 271 ve->key[0], ve->key[1], checksum)); 272 return entry; 273 } 274 275 static struct boot_catalog_entry * 276 cd9660_boot_setup_default_entry(struct cd9660_boot_image *disk) 277 { 278 struct boot_catalog_entry *default_entry; 279 boot_catalog_initial_entry *ie; 280 281 default_entry = cd9660_init_boot_catalog_entry(); 282 if (default_entry == NULL) 283 return NULL; 284 285 default_entry->entry_type = ET_ENTRY_IE; 286 ie = &default_entry->entry_data.IE; 287 288 ie->boot_indicator[0] = disk->bootable; 289 ie->media_type[0] = disk->targetMode; 290 cd9660_721(disk->loadSegment, ie->load_segment); 291 ie->system_type[0] = disk->system; 292 cd9660_721(disk->num_sectors, ie->sector_count); 293 cd9660_731(disk->sector, ie->load_rba); 294 295 ELTORITO_DPRINTF(("%s: boot indicator %d, media type %d, " 296 "load segment %04x, system type %d, sector count %d, " 297 "load rba %d\n", __func__, ie->boot_indicator[0], 298 ie->media_type[0], disk->loadSegment, ie->system_type[0], 299 disk->num_sectors, disk->sector)); 300 return default_entry; 301 } 302 303 static struct boot_catalog_entry * 304 cd9660_boot_setup_section_head(char platform) 305 { 306 struct boot_catalog_entry *entry; 307 boot_catalog_section_header *sh; 308 309 entry = cd9660_init_boot_catalog_entry(); 310 if (entry == NULL) 311 return NULL; 312 313 entry->entry_type = ET_ENTRY_SH; 314 sh = &entry->entry_data.SH; 315 /* More by default. The last one will manually be set to 0x91 */ 316 sh->header_indicator[0] = ET_SECTION_HEADER_MORE; 317 sh->platform_id[0] = platform; 318 sh->num_section_entries[0] = 0; 319 return entry; 320 } 321 322 static struct boot_catalog_entry * 323 cd9660_boot_setup_section_entry(struct cd9660_boot_image *disk) 324 { 325 struct boot_catalog_entry *entry; 326 boot_catalog_section_entry *se; 327 if ((entry = cd9660_init_boot_catalog_entry()) == NULL) 328 return NULL; 329 330 entry->entry_type = ET_ENTRY_SE; 331 se = &entry->entry_data.SE; 332 333 se->boot_indicator[0] = ET_BOOTABLE; 334 se->media_type[0] = disk->targetMode; 335 cd9660_721(disk->loadSegment, se->load_segment); 336 cd9660_721(disk->num_sectors, se->sector_count); 337 cd9660_731(disk->sector, se->load_rba); 338 return entry; 339 } 340 341 #if 0 342 static u_char 343 cd9660_boot_get_system_type(struct cd9660_boot_image *disk) 344 { 345 /* 346 For hard drive booting, we need to examine the MBR to figure 347 out what the partition type is 348 */ 349 return 0; 350 } 351 #endif 352 353 /* 354 * Set up the BVD, Boot catalog, and the boot entries, but do no writing 355 */ 356 int 357 cd9660_setup_boot(iso9660_disk *diskStructure, int first_sector) 358 { 359 int sector; 360 int used_sectors; 361 int num_entries = 0; 362 int catalog_sectors; 363 struct boot_catalog_entry *x86_head, *mac_head, *ppc_head, *efi_head, 364 *valid_entry, *default_entry, *temp, *head, **headp, *next; 365 struct cd9660_boot_image *tmp_disk; 366 367 headp = NULL; 368 x86_head = mac_head = ppc_head = efi_head = NULL; 369 370 /* If there are no boot disks, don't bother building boot information */ 371 if (TAILQ_EMPTY(&diskStructure->boot_images)) 372 return 0; 373 374 /* Point to catalog: For now assume it consumes one sector */ 375 ELTORITO_DPRINTF(("Boot catalog will go in sector %d\n", first_sector)); 376 diskStructure->boot_catalog_sector = first_sector; 377 cd9660_bothendian_dword(first_sector, 378 diskStructure->boot_descriptor->boot_catalog_pointer); 379 380 /* Step 1: Generate boot catalog */ 381 /* Step 1a: Validation entry */ 382 valid_entry = cd9660_boot_setup_validation_entry(ET_SYS_X86); 383 if (valid_entry == NULL) 384 return -1; 385 386 /* 387 * Count how many boot images there are, 388 * and how many sectors they consume. 389 */ 390 num_entries = 1; 391 used_sectors = 0; 392 393 TAILQ_FOREACH(tmp_disk, &diskStructure->boot_images, image_list) { 394 used_sectors += tmp_disk->num_sectors; 395 396 /* One default entry per image */ 397 num_entries++; 398 } 399 catalog_sectors = howmany(num_entries * 0x20, diskStructure->sectorSize); 400 used_sectors += catalog_sectors; 401 402 if (diskStructure->verbose_level > 0) { 403 printf("%s: there will be %i entries consuming %i sectors. " 404 "Catalog is %i sectors\n", __func__, num_entries, 405 used_sectors, catalog_sectors); 406 } 407 408 /* Populate sector numbers */ 409 sector = first_sector + catalog_sectors; 410 TAILQ_FOREACH(tmp_disk, &diskStructure->boot_images, image_list) { 411 tmp_disk->sector = sector; 412 sector += tmp_disk->num_sectors / 413 (diskStructure->sectorSize / 512); 414 } 415 416 LIST_INSERT_HEAD(&diskStructure->boot_entries, valid_entry, ll_struct); 417 418 /* Step 1b: Initial/default entry */ 419 /* TODO : PARAM */ 420 if (default_boot_image != NULL) { 421 struct cd9660_boot_image *tcbi; 422 TAILQ_FOREACH(tcbi, &diskStructure->boot_images, image_list) { 423 if (tcbi == default_boot_image) { 424 tmp_disk = tcbi; 425 break; 426 } 427 } 428 } 429 if (tmp_disk == NULL) 430 tmp_disk = TAILQ_FIRST(&diskStructure->boot_images); 431 default_entry = cd9660_boot_setup_default_entry(tmp_disk); 432 if (default_entry == NULL) { 433 warnx("Error: memory allocation failed in cd9660_setup_boot"); 434 return -1; 435 } 436 437 LIST_INSERT_AFTER(valid_entry, default_entry, ll_struct); 438 439 /* Todo: multiple default entries? */ 440 441 tmp_disk = TAILQ_FIRST(&diskStructure->boot_images); 442 443 head = NULL; 444 temp = default_entry; 445 446 /* If multiple boot images are given : */ 447 for (; tmp_disk != NULL; tmp_disk = TAILQ_NEXT(tmp_disk, image_list)) { 448 if (tmp_disk == default_boot_image) 449 continue; 450 451 /* Step 2: Section header */ 452 switch (tmp_disk->platform_id) { 453 case ET_SYS_X86: 454 headp = &x86_head; 455 break; 456 case ET_SYS_PPC: 457 headp = &ppc_head; 458 break; 459 case ET_SYS_MAC: 460 headp = &mac_head; 461 break; 462 case ET_SYS_EFI: 463 headp = &efi_head; 464 break; 465 default: 466 warnx("%s: internal error: unknown system type", 467 __func__); 468 return -1; 469 } 470 471 if (*headp == NULL) { 472 head = 473 cd9660_boot_setup_section_head(tmp_disk->platform_id); 474 if (head == NULL) { 475 warnx("Error: memory allocation failed in " 476 "cd9660_setup_boot"); 477 return -1; 478 } 479 LIST_INSERT_AFTER(default_entry, head, ll_struct); 480 *headp = head; 481 } else 482 head = *headp; 483 484 head->entry_data.SH.num_section_entries[0]++; 485 486 /* Step 2a: Section entry and extensions */ 487 temp = cd9660_boot_setup_section_entry(tmp_disk); 488 if (temp == NULL) { 489 warn("%s: cd9660_boot_setup_section_entry", __func__); 490 return -1; 491 } 492 493 while ((next = LIST_NEXT(head, ll_struct)) != NULL && 494 next->entry_type == ET_ENTRY_SE) 495 head = next; 496 497 LIST_INSERT_AFTER(head, temp, ll_struct); 498 } 499 500 /* Find the last Section Header entry and mark it as the last. */ 501 head = NULL; 502 LIST_FOREACH(next, &diskStructure->boot_entries, ll_struct) { 503 if (next->entry_type == ET_ENTRY_SH) 504 head = next; 505 } 506 if (head != NULL) 507 head->entry_data.SH.header_indicator[0] = ET_SECTION_HEADER_LAST; 508 509 /* TODO: Remaining boot disks when implemented */ 510 511 return first_sector + used_sectors; 512 } 513 514 int 515 cd9660_setup_boot_volume_descriptor(iso9660_disk *diskStructure, 516 volume_descriptor *bvd) 517 { 518 boot_volume_descriptor *bvdData = 519 (boot_volume_descriptor*)bvd->volumeDescriptorData; 520 521 bvdData->boot_record_indicator[0] = ISO_VOLUME_DESCRIPTOR_BOOT; 522 memcpy(bvdData->identifier, ISO_VOLUME_DESCRIPTOR_STANDARD_ID, 5); 523 bvdData->version[0] = 1; 524 memcpy(bvdData->boot_system_identifier, ET_ID, 23); 525 memcpy(bvdData->identifier, ISO_VOLUME_DESCRIPTOR_STANDARD_ID, 5); 526 diskStructure->boot_descriptor = 527 (boot_volume_descriptor*) bvd->volumeDescriptorData; 528 return 1; 529 } 530 531 static int 532 cd9660_write_mbr_partition_entry(FILE *fd, int idx, off_t sector_start, 533 off_t nsectors, int type) 534 { 535 uint8_t val; 536 uint32_t lba; 537 538 if (fseeko(fd, (off_t)(idx) * 16 + 0x1be, SEEK_SET) == -1) 539 err(1, "fseeko"); 540 541 val = 0x80; /* Bootable */ 542 fwrite(&val, sizeof(val), 1, fd); 543 544 val = 0xff; /* CHS begin */ 545 fwrite(&val, sizeof(val), 1, fd); 546 fwrite(&val, sizeof(val), 1, fd); 547 fwrite(&val, sizeof(val), 1, fd); 548 549 val = type; /* Part type */ 550 fwrite(&val, sizeof(val), 1, fd); 551 552 val = 0xff; /* CHS end */ 553 fwrite(&val, sizeof(val), 1, fd); 554 fwrite(&val, sizeof(val), 1, fd); 555 fwrite(&val, sizeof(val), 1, fd); 556 557 /* LBA extent */ 558 lba = htole32(sector_start); 559 fwrite(&lba, sizeof(lba), 1, fd); 560 lba = htole32(nsectors); 561 fwrite(&lba, sizeof(lba), 1, fd); 562 563 return 0; 564 } 565 566 static int 567 cd9660_write_apm_partition_entry(FILE *fd, int idx, int total_partitions, 568 off_t sector_start, off_t nsectors, off_t sector_size, 569 const char *part_name, const char *part_type) 570 { 571 uint32_t apm32, part_status; 572 uint16_t apm16; 573 574 /* See Apple Tech Note 1189 for the details about the pmPartStatus 575 * flags. 576 * Below the flags which are default: 577 * - IsValid 0x01 578 * - IsAllocated 0x02 579 * - IsReadable 0x10 580 * - IsWritable 0x20 581 */ 582 part_status = APPLE_PS_VALID | APPLE_PS_ALLOCATED | APPLE_PS_READABLE | 583 APPLE_PS_WRITABLE; 584 585 if (fseeko(fd, (off_t)(idx + 1) * sector_size, SEEK_SET) == -1) 586 err(1, "fseeko"); 587 588 /* Signature */ 589 apm16 = htobe16(0x504d); 590 fwrite(&apm16, sizeof(apm16), 1, fd); 591 apm16 = 0; 592 fwrite(&apm16, sizeof(apm16), 1, fd); 593 594 /* Total number of partitions */ 595 apm32 = htobe32(total_partitions); 596 fwrite(&apm32, sizeof(apm32), 1, fd); 597 /* Bounds */ 598 apm32 = htobe32(sector_start); 599 fwrite(&apm32, sizeof(apm32), 1, fd); 600 apm32 = htobe32(nsectors); 601 fwrite(&apm32, sizeof(apm32), 1, fd); 602 603 fwrite(part_name, strlen(part_name) + 1, 1, fd); 604 fseek(fd, 32 - strlen(part_name) - 1, SEEK_CUR); 605 fwrite(part_type, strlen(part_type) + 1, 1, fd); 606 fseek(fd, 32 - strlen(part_type) - 1, SEEK_CUR); 607 608 apm32 = 0; 609 /* pmLgDataStart */ 610 fwrite(&apm32, sizeof(apm32), 1, fd); 611 /* pmDataCnt */ 612 apm32 = htobe32(nsectors); 613 fwrite(&apm32, sizeof(apm32), 1, fd); 614 /* pmPartStatus */ 615 apm32 = htobe32(part_status); 616 fwrite(&apm32, sizeof(apm32), 1, fd); 617 618 return 0; 619 } 620 621 int 622 cd9660_write_boot(iso9660_disk *diskStructure, FILE *fd) 623 { 624 struct boot_catalog_entry *e; 625 struct cd9660_boot_image *t; 626 int apm_partitions = 0; 627 int mbr_partitions = 0; 628 629 /* write boot catalog */ 630 if (fseeko(fd, (off_t)diskStructure->boot_catalog_sector * 631 diskStructure->sectorSize, SEEK_SET) == -1) 632 err(1, "fseeko"); 633 634 if (diskStructure->verbose_level > 0) { 635 printf("Writing boot catalog to sector %" PRId64 "\n", 636 diskStructure->boot_catalog_sector); 637 } 638 LIST_FOREACH(e, &diskStructure->boot_entries, ll_struct) { 639 if (diskStructure->verbose_level > 0) { 640 printf("Writing catalog entry of type %d\n", 641 e->entry_type); 642 } 643 /* 644 * It doesnt matter which one gets written 645 * since they are the same size 646 */ 647 fwrite(&(e->entry_data.VE), 1, 32, fd); 648 } 649 if (diskStructure->verbose_level > 0) 650 printf("Finished writing boot catalog\n"); 651 652 /* copy boot images */ 653 TAILQ_FOREACH(t, &diskStructure->boot_images, image_list) { 654 if (diskStructure->verbose_level > 0) { 655 printf("Writing boot image from %s to sectors %d\n", 656 t->filename, t->sector); 657 } 658 cd9660_copy_file(diskStructure, fd, t->sector, t->filename); 659 660 if (t->system == ET_SYS_MAC) 661 apm_partitions++; 662 if (t->system == ET_SYS_PPC) 663 mbr_partitions++; 664 } 665 666 /* some systems need partition tables as well */ 667 if (mbr_partitions > 0 || diskStructure->chrp_boot) { 668 uint16_t sig; 669 670 fseek(fd, 0x1fe, SEEK_SET); 671 sig = htole16(0xaa55); 672 fwrite(&sig, sizeof(sig), 1, fd); 673 674 mbr_partitions = 0; 675 676 /* Write ISO9660 descriptor, enclosing the whole disk */ 677 if (diskStructure->chrp_boot) 678 cd9660_write_mbr_partition_entry(fd, mbr_partitions++, 679 0, diskStructure->totalSectors * 680 (diskStructure->sectorSize / 512), 0x96); 681 682 /* Write all partition entries */ 683 TAILQ_FOREACH(t, &diskStructure->boot_images, image_list) { 684 if (t->system != ET_SYS_PPC) 685 continue; 686 cd9660_write_mbr_partition_entry(fd, mbr_partitions++, 687 t->sector * (diskStructure->sectorSize / 512), 688 t->num_sectors * (diskStructure->sectorSize / 512), 689 0x41 /* PReP Boot */); 690 } 691 } 692 693 if (apm_partitions > 0) { 694 /* Write DDR and global APM info */ 695 uint32_t apm32; 696 uint16_t apm16; 697 int total_parts; 698 699 fseek(fd, 0, SEEK_SET); 700 apm16 = htobe16(0x4552); 701 fwrite(&apm16, sizeof(apm16), 1, fd); 702 /* Device block size */ 703 apm16 = htobe16(512); 704 fwrite(&apm16, sizeof(apm16), 1, fd); 705 /* Device block count */ 706 apm32 = htobe32(diskStructure->totalSectors * 707 (diskStructure->sectorSize / 512)); 708 fwrite(&apm32, sizeof(apm32), 1, fd); 709 /* Device type/id */ 710 apm16 = htobe16(1); 711 fwrite(&apm16, sizeof(apm16), 1, fd); 712 fwrite(&apm16, sizeof(apm16), 1, fd); 713 714 /* Count total needed entries */ 715 total_parts = 2 + apm_partitions; /* Self + ISO9660 */ 716 717 /* Write self-descriptor */ 718 cd9660_write_apm_partition_entry(fd, 0, total_parts, 1, 719 total_parts, 512, "Apple", "Apple_partition_map"); 720 721 /* Write all partition entries */ 722 apm_partitions = 0; 723 TAILQ_FOREACH(t, &diskStructure->boot_images, image_list) { 724 if (t->system != ET_SYS_MAC) 725 continue; 726 727 cd9660_write_apm_partition_entry(fd, 728 1 + apm_partitions++, total_parts, 729 t->sector * (diskStructure->sectorSize / 512), 730 t->num_sectors * (diskStructure->sectorSize / 512), 731 512, "CD Boot", "Apple_Bootstrap"); 732 } 733 734 /* Write ISO9660 descriptor, enclosing the whole disk */ 735 cd9660_write_apm_partition_entry(fd, 2 + apm_partitions, 736 total_parts, 0, diskStructure->totalSectors * 737 (diskStructure->sectorSize / 512), 512, "ISO9660", 738 "CD_ROM_Mode_1"); 739 } 740 741 return 0; 742 } 743