1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #include <stdio.h> 27 #include <stdlib.h> 28 #include <libgen.h> 29 #include <malloc.h> 30 #include <string.h> 31 #include <sys/types.h> 32 #include <sys/stat.h> 33 #include <fcntl.h> 34 #include <unistd.h> 35 #include <strings.h> 36 #include <sys/mount.h> 37 #include <sys/mnttab.h> 38 #include <sys/dktp/fdisk.h> 39 #include <sys/dkio.h> 40 #include <sys/vtoc.h> 41 42 #include <libintl.h> 43 #include <locale.h> 44 #include "message.h" 45 #include <errno.h> 46 #include <libfdisk.h> 47 #include <md5.h> 48 49 #ifndef TEXT_DOMAIN 50 #define TEXT_DOMAIN "SUNW_OST_OSCMD" 51 #endif 52 53 #define SECTOR_SIZE 0x200 54 #define HASH_SIZE 0x10 55 #define VERSION_SIZE 0x50 56 #define STAGE2_MEMADDR 0x8000 /* loading addr of stage2 */ 57 58 #define STAGE1_BPB_OFFSET 0x3 59 #define STAGE1_BPB_SIZE 0x3B 60 #define STAGE1_BOOT_DRIVE 0x40 61 #define STAGE1_FORCE_LBA 0x41 62 #define STAGE1_STAGE2_ADDRESS 0x42 63 #define STAGE1_STAGE2_SECTOR 0x44 64 #define STAGE1_STAGE2_SEGMENT 0x48 65 66 #define STAGE2_BLOCKLIST (SECTOR_SIZE - 0x8) 67 #define STAGE2_INSTALLPART (SECTOR_SIZE + 0x8) 68 #define STAGE2_FORCE_LBA (SECTOR_SIZE + 0x11) 69 #define STAGE2_VER_STRING (SECTOR_SIZE + 0x12) 70 #define STAGE2_SIGN_OFFSET (SECTOR_SIZE + 0x60) 71 #define STAGE2_PKG_VERSION (SECTOR_SIZE + 0x70) 72 #define STAGE2_BLKOFF 50 /* offset from start of fdisk part */ 73 74 static char extended_sig[] = "\xCC\xCC\xCC\xCC\xAA\xAA\xAA\xAA\xBB\xBB\xBB\xBB" 75 "\xBB\xBB\xBB\xBB"; 76 77 static int nowrite = 0; 78 static int write_mboot = 0; 79 static int force_mboot = 0; 80 static int getinfo = 0; 81 static int do_version = 0; 82 static int is_floppy = 0; 83 static int is_bootpar = 0; 84 static int strip = 0; 85 static int stage2_fd; 86 static int partition, slice = 0xff; 87 static char *device_p0; 88 static uint32_t stage2_first_sector, stage2_second_sector; 89 90 91 static char bpb_sect[SECTOR_SIZE]; 92 static char boot_sect[SECTOR_SIZE]; 93 static char stage1_buffer[SECTOR_SIZE]; 94 static char stage2_buffer[2 * SECTOR_SIZE]; 95 static char signature[HASH_SIZE]; 96 static char verstring[VERSION_SIZE]; 97 static unsigned int blocklist[SECTOR_SIZE / sizeof (unsigned int)]; 98 99 static int open_device(char *); 100 static void read_bpb_sect(int); 101 static void read_boot_sect(char *); 102 static void write_boot_sect(char *); 103 static void read_stage1_stage2(char *, char *); 104 static void modify_and_write_stage1(int); 105 static void modify_and_write_stage2(int); 106 static unsigned int get_start_sector(int); 107 static void copy_stage2(int, char *); 108 static char *get_raw_partition(char *); 109 static void usage(char *); 110 static void print_info(); 111 static int read_stage2_info(int); 112 static void check_extended_support(); 113 114 extern int read_stage2_blocklist(int, unsigned int *); 115 116 int 117 main(int argc, char *argv[]) 118 { 119 int dev_fd, opt, params = 3; 120 char *stage1, *stage2, *device; 121 122 (void) setlocale(LC_ALL, ""); 123 (void) textdomain(TEXT_DOMAIN); 124 125 while ((opt = getopt(argc, argv, "fmneis:")) != EOF) { 126 switch (opt) { 127 case 'm': 128 write_mboot = 1; 129 break; 130 case 'n': 131 nowrite = 1; 132 break; 133 case 'f': 134 force_mboot = 1; 135 break; 136 case 'i': 137 getinfo = 1; 138 params = 1; 139 break; 140 case 'e': 141 strip = 1; 142 break; 143 case 's': 144 do_version = 1; 145 (void) snprintf(verstring, sizeof (verstring), "%s", 146 optarg); 147 break; 148 default: 149 /* fall through to process non-optional args */ 150 break; 151 } 152 } 153 154 /* check arguments */ 155 if (argc != optind + params) { 156 usage(argv[0]); 157 } 158 159 if (nowrite) { 160 (void) fprintf(stdout, DRY_RUN); 161 } 162 163 if (params == 1) { 164 device = strdup(argv[optind]); 165 if (!device) { 166 usage(argv[0]); 167 } 168 } else if (params == 3) { 169 stage1 = strdup(argv[optind]); 170 stage2 = strdup(argv[optind + 1]); 171 device = strdup(argv[optind + 2]); 172 173 if (!stage1 || !stage2 || !device) { 174 usage(argv[0]); 175 } 176 } 177 178 /* open and check device type */ 179 dev_fd = open_device(device); 180 181 if (getinfo) { 182 if (read_stage2_info(dev_fd) != 0) { 183 fprintf(stderr, "Unable to read extended information" 184 " from %s\n", device); 185 exit(1); 186 } 187 print_info(); 188 (void) free(device); 189 (void) close(dev_fd); 190 return (0); 191 } 192 193 /* read in stage1 and stage2 into buffer */ 194 read_stage1_stage2(stage1, stage2); 195 196 /* check if stage2 supports extended versioning */ 197 if (do_version) 198 check_extended_support(stage2); 199 200 /* In the pcfs case, write a fresh stage2 */ 201 if (is_floppy || is_bootpar) { 202 copy_stage2(dev_fd, device); 203 read_bpb_sect(dev_fd); 204 } 205 206 /* read in boot sector */ 207 if (!is_floppy) 208 read_boot_sect(device); 209 210 /* modify stage1 based on grub needs */ 211 modify_and_write_stage1(dev_fd); 212 213 /* modify stage2 and write to media */ 214 modify_and_write_stage2(dev_fd); 215 216 if (!is_floppy && write_mboot) 217 write_boot_sect(device); 218 219 (void) close(dev_fd); 220 free(device); 221 free(stage1); 222 free(stage2); 223 224 return (0); 225 } 226 227 static unsigned int 228 get_start_sector(int fd) 229 { 230 static unsigned int start_sect = 0; 231 uint32_t secnum = 0, numsec = 0; 232 int i, pno, rval, log_part = 0; 233 struct mboot *mboot; 234 struct ipart *part; 235 ext_part_t *epp; 236 struct part_info dkpi; 237 struct extpart_info edkpi; 238 239 if (start_sect) 240 return (start_sect); 241 242 mboot = (struct mboot *)boot_sect; 243 for (i = 0; i < FD_NUMPART; i++) { 244 part = (struct ipart *)mboot->parts + i; 245 if (is_bootpar) { 246 if (part->systid == 0xbe) { 247 start_sect = part->relsect; 248 partition = i; 249 goto found_part; 250 } 251 } 252 } 253 254 /* 255 * We will not support x86 boot partition on extended partitions 256 */ 257 if (is_bootpar) { 258 (void) fprintf(stderr, NOBOOTPAR); 259 exit(-1); 260 } 261 262 /* 263 * Not an x86 boot partition. Search for Solaris fdisk partition 264 * Get the solaris partition information from the device 265 * and compare the offset of S2 with offset of solaris partition 266 * from fdisk partition table. 267 */ 268 if (ioctl(fd, DKIOCEXTPARTINFO, &edkpi) < 0) { 269 if (ioctl(fd, DKIOCPARTINFO, &dkpi) < 0) { 270 (void) fprintf(stderr, PART_FAIL); 271 exit(-1); 272 } else { 273 edkpi.p_start = dkpi.p_start; 274 } 275 } 276 277 for (i = 0; i < FD_NUMPART; i++) { 278 part = (struct ipart *)mboot->parts + i; 279 280 if (part->relsect == 0) { 281 (void) fprintf(stderr, BAD_PART, i); 282 exit(-1); 283 } 284 285 if (edkpi.p_start >= part->relsect && 286 edkpi.p_start < (part->relsect + part->numsect)) { 287 /* Found the partition */ 288 break; 289 } 290 } 291 292 if (i == FD_NUMPART) { 293 /* No solaris fdisk partitions (primary or logical) */ 294 (void) fprintf(stderr, NOSOLPAR); 295 exit(-1); 296 } 297 298 /* 299 * We have found a Solaris fdisk partition (primary or extended) 300 * Handle the simple case first: Solaris in a primary partition 301 */ 302 if (!fdisk_is_dos_extended(part->systid)) { 303 start_sect = part->relsect; 304 partition = i; 305 goto found_part; 306 } 307 308 /* 309 * Solaris in a logical partition. Find that partition in the 310 * extended part. 311 */ 312 if ((rval = libfdisk_init(&epp, device_p0, NULL, FDISK_READ_DISK)) 313 != FDISK_SUCCESS) { 314 switch (rval) { 315 /* 316 * The first 2 cases are not an error per-se, just that 317 * there is no Solaris logical partition 318 */ 319 case FDISK_EBADLOGDRIVE: 320 case FDISK_ENOLOGDRIVE: 321 (void) fprintf(stderr, NOSOLPAR); 322 exit(-1); 323 /*NOTREACHED*/ 324 case FDISK_ENOVGEOM: 325 (void) fprintf(stderr, NO_VIRT_GEOM); 326 exit(1); 327 break; 328 case FDISK_ENOPGEOM: 329 (void) fprintf(stderr, NO_PHYS_GEOM); 330 exit(1); 331 break; 332 case FDISK_ENOLGEOM: 333 (void) fprintf(stderr, NO_LABEL_GEOM); 334 exit(1); 335 break; 336 default: 337 (void) fprintf(stderr, LIBFDISK_INIT_FAIL); 338 exit(1); 339 break; 340 } 341 } 342 343 rval = fdisk_get_solaris_part(epp, &pno, &secnum, &numsec); 344 if (rval != FDISK_SUCCESS) { 345 /* No solaris logical partition */ 346 (void) fprintf(stderr, NOSOLPAR); 347 exit(-1); 348 } 349 libfdisk_fini(&epp); 350 351 start_sect = secnum; 352 partition = pno - 1; 353 log_part = 1; 354 355 found_part: 356 /* get confirmation for -m */ 357 if (write_mboot && !force_mboot) { 358 (void) fprintf(stdout, MBOOT_PROMPT); 359 if (getchar() != 'y') { 360 write_mboot = 0; 361 (void) fprintf(stdout, MBOOT_NOT_UPDATED); 362 } 363 } 364 365 /* 366 * Currently if Solaris is in an extended partition we need to 367 * write GRUB to the MBR. Check for this. 368 */ 369 if (log_part && !write_mboot) { 370 (void) fprintf(stderr, EXTSOLPAR); 371 exit(-1); 372 } 373 374 /* 375 * warn, if Solaris in primary partition and GRUB not in MBR and 376 * partition is not active 377 */ 378 if (!log_part && part->bootid != 128 && !write_mboot) { 379 (void) fprintf(stdout, SOLPAR_INACTIVE, partition + 1); 380 } 381 382 return (start_sect); 383 } 384 385 static void 386 usage(char *progname) 387 { 388 (void) fprintf(stderr, USAGE, basename(progname)); 389 exit(-1); 390 } 391 392 static int 393 open_device(char *device) 394 { 395 int dev_fd; 396 struct stat stat; 397 char *raw_part; 398 399 is_floppy = strncmp(device, "/dev/rdsk", strlen("/dev/rdsk")) && 400 strncmp(device, "/dev/dsk", strlen("/dev/dsk")); 401 402 /* handle boot partition specification */ 403 if (!is_floppy && strstr(device, "p0:boot")) { 404 is_bootpar = 1; 405 } 406 407 raw_part = get_raw_partition(device); 408 409 if (nowrite) 410 dev_fd = open(raw_part, O_RDONLY); 411 else 412 dev_fd = open(raw_part, O_RDWR); 413 414 if (dev_fd == -1 || fstat(dev_fd, &stat) != 0) { 415 (void) fprintf(stderr, OPEN_FAIL, raw_part); 416 exit(-1); 417 } 418 if (S_ISCHR(stat.st_mode) == 0) { 419 (void) fprintf(stderr, NOT_RAW_DEVICE, raw_part); 420 exit(-1); 421 } 422 423 return (dev_fd); 424 } 425 426 static void 427 read_stage1_stage2(char *stage1, char *stage2) 428 { 429 int fd; 430 431 /* read the stage1 file from filesystem */ 432 fd = open(stage1, O_RDONLY); 433 if (fd == -1 || read(fd, stage1_buffer, SECTOR_SIZE) != SECTOR_SIZE) { 434 (void) fprintf(stderr, READ_FAIL_STAGE1, stage1); 435 exit(-1); 436 } 437 (void) close(fd); 438 439 /* read first two blocks of stage 2 from filesystem */ 440 stage2_fd = open(stage2, O_RDONLY); 441 if (stage2_fd == -1 || 442 read(stage2_fd, stage2_buffer, 2 * SECTOR_SIZE) 443 != 2 * SECTOR_SIZE) { 444 (void) fprintf(stderr, READ_FAIL_STAGE2, stage2); 445 exit(-1); 446 } 447 /* leave the stage2 file open for later */ 448 } 449 450 static void 451 read_bpb_sect(int dev_fd) 452 { 453 if (pread(dev_fd, bpb_sect, SECTOR_SIZE, 0) != SECTOR_SIZE) { 454 (void) fprintf(stderr, READ_FAIL_BPB); 455 exit(-1); 456 } 457 } 458 459 static void 460 read_boot_sect(char *device) 461 { 462 static int read_mbr = 0; 463 int i, fd; 464 char save[2]; 465 466 if (read_mbr) 467 return; 468 read_mbr = 1; 469 470 /* get the whole disk (p0) */ 471 i = strlen(device); 472 save[0] = device[i - 2]; 473 save[1] = device[i - 1]; 474 device[i - 2] = 'p'; 475 device[i - 1] = '0'; 476 477 device_p0 = strdup(device); 478 fd = open(device, O_RDONLY); 479 if (fd == -1 || read(fd, boot_sect, SECTOR_SIZE) != SECTOR_SIZE) { 480 (void) fprintf(stderr, READ_FAIL_MBR, device); 481 if (fd == -1) 482 perror("open"); 483 else 484 perror("read"); 485 exit(-1); 486 } 487 (void) close(fd); 488 device[i - 2] = save[0]; 489 device[i - 1] = save[1]; 490 } 491 492 static void 493 write_boot_sect(char *device) 494 { 495 int fd, len; 496 char *raw, *end; 497 struct stat stat; 498 499 /* make a copy and chop off ":boot" */ 500 raw = strdup(device); 501 end = strstr(raw, "p0:boot"); 502 if (end) 503 end[2] = 0; 504 505 /* open p0 (whole disk) */ 506 len = strlen(raw); 507 raw[len - 2] = 'p'; 508 raw[len - 1] = '0'; 509 fd = open(raw, O_WRONLY); 510 if (fd == -1 || fstat(fd, &stat) != 0) { 511 (void) fprintf(stderr, OPEN_FAIL, raw); 512 exit(-1); 513 } 514 if (!nowrite && 515 pwrite(fd, stage1_buffer, SECTOR_SIZE, 0) != SECTOR_SIZE) { 516 (void) fprintf(stderr, WRITE_FAIL_BOOTSEC); 517 exit(-1); 518 } 519 (void) fprintf(stdout, WRITE_MBOOT); 520 (void) close(fd); 521 } 522 523 static void 524 modify_and_write_stage1(int dev_fd) 525 { 526 if (is_floppy) { 527 stage2_first_sector = blocklist[0]; 528 /* copy bios parameter block (for fat fs) */ 529 bcopy(bpb_sect + STAGE1_BPB_OFFSET, 530 stage1_buffer + STAGE1_BPB_OFFSET, STAGE1_BPB_SIZE); 531 } else if (is_bootpar) { 532 stage2_first_sector = get_start_sector(dev_fd) + blocklist[0]; 533 /* copy bios parameter block (for fat fs) and MBR */ 534 bcopy(bpb_sect + STAGE1_BPB_OFFSET, 535 stage1_buffer + STAGE1_BPB_OFFSET, STAGE1_BPB_SIZE); 536 bcopy(boot_sect + BOOTSZ, stage1_buffer + BOOTSZ, 512 - BOOTSZ); 537 *((unsigned char *)(stage1_buffer + STAGE1_FORCE_LBA)) = 1; 538 } else { 539 stage2_first_sector = get_start_sector(dev_fd) + STAGE2_BLKOFF; 540 /* copy MBR to stage1 in case of overwriting MBR sector */ 541 bcopy(boot_sect + BOOTSZ, stage1_buffer + BOOTSZ, 512 - BOOTSZ); 542 *((unsigned char *)(stage1_buffer + STAGE1_FORCE_LBA)) = 1; 543 } 544 545 /* modify default stage1 file generated by GRUB */ 546 *((ulong_t *)(stage1_buffer + STAGE1_STAGE2_SECTOR)) 547 = stage2_first_sector; 548 *((ushort_t *)(stage1_buffer + STAGE1_STAGE2_ADDRESS)) 549 = STAGE2_MEMADDR; 550 *((ushort_t *)(stage1_buffer + STAGE1_STAGE2_SEGMENT)) 551 = STAGE2_MEMADDR >> 4; 552 553 /* 554 * XXX the default grub distribution also: 555 * - Copy the possible MBR/extended part table 556 * - Set the boot drive of stage1 557 */ 558 559 /* write stage1/pboot to 1st sector */ 560 if (!nowrite && 561 pwrite(dev_fd, stage1_buffer, SECTOR_SIZE, 0) != SECTOR_SIZE) { 562 (void) fprintf(stderr, WRITE_FAIL_PBOOT); 563 exit(-1); 564 } 565 566 if (is_floppy) { 567 (void) fprintf(stdout, WRITE_BOOTSEC_FLOPPY); 568 } else { 569 (void) fprintf(stdout, WRITE_PBOOT, 570 partition, get_start_sector(dev_fd)); 571 } 572 } 573 574 static void check_extended_support(char *stage2) 575 { 576 char *cmp = stage2_buffer + STAGE2_SIGN_OFFSET - 1; 577 578 if ((*cmp++ != '\xEE') && memcmp(cmp, extended_sig, HASH_SIZE) != 0) { 579 fprintf(stderr, "%s does not support extended versioning\n", 580 stage2); 581 do_version = 0; 582 } 583 } 584 585 586 static void print_info() 587 { 588 int i; 589 590 if (strip) { 591 fprintf(stdout, "%s\n", verstring); 592 } else { 593 fprintf(stdout, "Grub extended version information : %s\n", 594 verstring); 595 fprintf(stdout, "Grub stage2 (MD5) signature : "); 596 } 597 598 for (i = 0; i < HASH_SIZE; i++) 599 fprintf(stdout, "%02x", (unsigned char)signature[i]); 600 601 fprintf(stdout, "\n"); 602 } 603 604 static int 605 read_stage2_info(int dev_fd) 606 { 607 int ret; 608 int first_offset, second_offset; 609 char *sign; 610 611 if (is_floppy || is_bootpar) { 612 613 ret = pread(dev_fd, stage1_buffer, SECTOR_SIZE, 0); 614 if (ret != SECTOR_SIZE) { 615 perror("Error reading stage1 sector"); 616 return (1); 617 } 618 619 first_offset = *((ulong_t *)(stage1_buffer + 620 STAGE1_STAGE2_SECTOR)); 621 622 /* Start reading in the first sector of stage 2 */ 623 624 ret = pread(dev_fd, stage2_buffer, SECTOR_SIZE, first_offset * 625 SECTOR_SIZE); 626 if (ret != SECTOR_SIZE) { 627 perror("Error reading stage2 first sector"); 628 return (1); 629 } 630 631 /* From the block list section grab stage2 second sector */ 632 633 second_offset = *((ulong_t *)(stage2_buffer + 634 STAGE2_BLOCKLIST)); 635 636 ret = pread(dev_fd, stage2_buffer + SECTOR_SIZE, SECTOR_SIZE, 637 second_offset * SECTOR_SIZE); 638 if (ret != SECTOR_SIZE) { 639 perror("Error reading stage2 second sector"); 640 return (1); 641 } 642 } else { 643 ret = pread(dev_fd, stage2_buffer, 2 * SECTOR_SIZE, 644 STAGE2_BLKOFF * SECTOR_SIZE); 645 if (ret != 2 * SECTOR_SIZE) { 646 perror("Error reading stage2 sectors"); 647 return (1); 648 } 649 } 650 651 sign = stage2_buffer + STAGE2_SIGN_OFFSET - 1; 652 if (*sign++ != '\xEE') 653 return (1); 654 (void) memcpy(signature, sign, HASH_SIZE); 655 sign = stage2_buffer + STAGE2_PKG_VERSION; 656 (void) strncpy(verstring, sign, VERSION_SIZE); 657 return (0); 658 } 659 660 661 static int 662 compute_and_write_md5hash(char *dest) 663 { 664 struct stat sb; 665 char *buffer; 666 667 if (fstat(stage2_fd, &sb) == -1) 668 return (-1); 669 670 buffer = malloc(sb.st_size); 671 if (buffer == NULL) 672 return (-1); 673 674 if (lseek(stage2_fd, 0, SEEK_SET) == -1) 675 return (-1); 676 if (read(stage2_fd, buffer, sb.st_size) < 0) 677 return (-1); 678 679 md5_calc(dest, buffer, sb.st_size); 680 free(buffer); 681 return (0); 682 } 683 684 685 #define START_BLOCK(pos) (*(ulong_t *)(pos)) 686 #define NUM_BLOCK(pos) (*(ushort_t *)((pos) + 4)) 687 #define START_SEG(pos) (*(ushort_t *)((pos) + 6)) 688 689 static void 690 modify_and_write_stage2(int dev_fd) 691 { 692 int nrecord; 693 off_t offset; 694 char *dest; 695 696 if (do_version) { 697 dest = stage2_buffer + STAGE2_SIGN_OFFSET; 698 if (compute_and_write_md5hash(dest) < 0) 699 perror("MD5 operation"); 700 dest = stage2_buffer + STAGE2_PKG_VERSION; 701 (void) strncpy(dest, verstring, VERSION_SIZE); 702 } 703 704 if (is_floppy || is_bootpar) { 705 int i = 0; 706 uint32_t partition_offset; 707 uint32_t install_addr = 0x8200; 708 uchar_t *pos = (uchar_t *)stage2_buffer + STAGE2_BLOCKLIST; 709 710 stage2_first_sector = blocklist[0]; 711 712 /* figure out the second sector */ 713 if (blocklist[1] > 1) { 714 blocklist[0]++; 715 blocklist[1]--; 716 } else { 717 i += 2; 718 } 719 stage2_second_sector = blocklist[i]; 720 721 if (is_floppy) 722 partition_offset = 0; 723 else /* solaris boot partition */ 724 partition_offset = get_start_sector(dev_fd); 725 726 /* install the blocklist at the end of stage2_buffer */ 727 while (blocklist[i]) { 728 if (START_BLOCK(pos - 8) != 0 && 729 START_BLOCK(pos - 8) != blocklist[i + 2]) { 730 (void) fprintf(stderr, PCFS_FRAGMENTED); 731 exit(-1); 732 } 733 START_BLOCK(pos) = blocklist[i] + partition_offset; 734 START_SEG(pos) = (ushort_t)(install_addr >> 4); 735 NUM_BLOCK(pos) = blocklist[i + 1]; 736 install_addr += blocklist[i + 1] * SECTOR_SIZE; 737 pos -= 8; 738 i += 2; 739 } 740 741 } else { 742 /* 743 * In a solaris partition, stage2 is written to contiguous 744 * blocks. So we update the starting block only. 745 */ 746 *((ulong_t *)(stage2_buffer + STAGE2_BLOCKLIST)) = 747 stage2_first_sector + 1; 748 } 749 750 if (is_floppy) { 751 /* modify the config file to add (fd0) */ 752 char *config_file = stage2_buffer + STAGE2_VER_STRING; 753 while (*config_file++) 754 ; 755 strcpy(config_file, "(fd0)/boot/grub/menu.lst"); 756 } else { 757 /* force lba and set disk partition */ 758 *((unsigned char *) (stage2_buffer + STAGE2_FORCE_LBA)) = 1; 759 *((long *)(stage2_buffer + STAGE2_INSTALLPART)) 760 = (partition << 16) | (slice << 8) | 0xff; 761 } 762 763 /* modification done, now do the writing */ 764 if (is_floppy || is_bootpar) { 765 /* we rewrite block 0 and 1 and that's it */ 766 if (!nowrite && 767 (pwrite(dev_fd, stage2_buffer, SECTOR_SIZE, 768 stage2_first_sector * SECTOR_SIZE) != SECTOR_SIZE || 769 pwrite(dev_fd, stage2_buffer + SECTOR_SIZE, SECTOR_SIZE, 770 stage2_second_sector * SECTOR_SIZE) != SECTOR_SIZE)) { 771 (void) fprintf(stderr, WRITE_FAIL_STAGE2); 772 exit(-1); 773 } 774 (void) fprintf(stdout, WRITE_STAGE2_PCFS); 775 return; 776 } 777 778 /* for disk, write stage2 starting at STAGE2_BLKOFF sector */ 779 offset = STAGE2_BLKOFF; 780 781 /* write the modified first two sectors */ 782 if (!nowrite && pwrite(dev_fd, stage2_buffer, 2 * SECTOR_SIZE, 783 offset * SECTOR_SIZE) != 2 * SECTOR_SIZE) { 784 (void) fprintf(stderr, WRITE_FAIL_STAGE2); 785 exit(-1); 786 } 787 788 /* write the remaining sectors */ 789 nrecord = 2; 790 offset += 2; 791 for (;;) { 792 int nread, nwrite; 793 nread = pread(stage2_fd, stage2_buffer, SECTOR_SIZE, 794 nrecord * SECTOR_SIZE); 795 if (nread > 0 && !nowrite) 796 nwrite = pwrite(dev_fd, stage2_buffer, SECTOR_SIZE, 797 offset * SECTOR_SIZE); 798 else 799 nwrite = SECTOR_SIZE; 800 if (nread < 0 || nwrite != SECTOR_SIZE) { 801 (void) fprintf(stderr, WRITE_FAIL_STAGE2_BLOCKS, 802 nread, nwrite); 803 break; 804 } 805 if (nread > 0) { 806 nrecord ++; 807 offset ++; 808 } 809 if (nread < SECTOR_SIZE) 810 break; /* end of file */ 811 } 812 (void) fprintf(stdout, WRITE_STAGE2_DISK, 813 partition, nrecord, STAGE2_BLKOFF, stage2_first_sector); 814 } 815 816 static char * 817 get_raw_partition(char *device) 818 { 819 int len; 820 struct mboot *mboot; 821 static char *raw = NULL; 822 823 if (raw) 824 return (raw); 825 raw = strdup(device); 826 827 if (is_floppy) 828 return (raw); 829 830 if (is_bootpar) { 831 int i; 832 char *end = strstr(raw, "p0:boot"); 833 834 end[2] = 0; /* chop off :boot */ 835 read_boot_sect(raw); 836 mboot = (struct mboot *)boot_sect; 837 for (i = 0; i < FD_NUMPART; i++) { 838 struct ipart *part = (struct ipart *)mboot->parts + i; 839 if (part->systid == 0xbe) /* solaris boot part */ 840 break; 841 } 842 843 if (i == FD_NUMPART) { 844 (void) fprintf(stderr, BOOTPAR_NOTFOUND, device); 845 exit(-1); 846 } 847 end[1] = '1' + i; /* set partition name */ 848 return (raw); 849 } 850 851 /* For disk, remember slice and return whole fdisk partition */ 852 len = strlen(raw); 853 if (raw[len - 2] != 's' || raw[len - 1] == '2') { 854 (void) fprintf(stderr, NOT_ROOT_SLICE); 855 exit(-1); 856 } 857 slice = atoi(&raw[len - 1]); 858 859 raw[len - 2] = 's'; 860 raw[len - 1] = '2'; 861 return (raw); 862 } 863 864 #define TMP_MNTPT "/tmp/installgrub_pcfs" 865 static void 866 copy_stage2(int dev_fd, char *device) 867 { 868 FILE *mntfp; 869 int i, pcfs_fp; 870 char buf[SECTOR_SIZE]; 871 char *cp; 872 struct mnttab mp = {0}, mpref = {0}; 873 874 /* convert raw to block device name by removing the first 'r' */ 875 (void) strncpy(buf, device, sizeof (buf)); 876 buf[sizeof (buf) - 1] = 0; 877 cp = strchr(buf, 'r'); 878 if (cp == NULL) { 879 (void) fprintf(stderr, CONVERT_FAIL, device); 880 exit(-1); 881 } 882 do { 883 *cp = *(cp + 1); 884 } while (*(++cp)); 885 886 /* get the mount point, if any */ 887 mntfp = fopen("/etc/mnttab", "r"); 888 if (mntfp == NULL) { 889 (void) fprintf(stderr, OPEN_FAIL_FILE, "/etc/mnttab"); 890 exit(-1); 891 } 892 893 mpref.mnt_special = buf; 894 if (getmntany(mntfp, &mp, &mpref) != 0) { 895 char cmd[128]; 896 897 /* not mounted, try remount */ 898 (void) mkdir(TMP_MNTPT, S_IRWXU); 899 (void) snprintf(cmd, sizeof (cmd), "mount -F pcfs %s %s", 900 buf, TMP_MNTPT); 901 (void) system(cmd); 902 rewind(mntfp); 903 bzero(&mp, sizeof (mp)); 904 if (getmntany(mntfp, &mp, &mpref) != 0) { 905 (void) fprintf(stderr, MOUNT_FAIL, buf); 906 exit(-1); 907 } 908 } 909 910 (void) snprintf(buf, sizeof (buf), 911 "%s/boot", mp.mnt_mountp); 912 (void) mkdir(buf, S_IRWXU); 913 (void) strcat(buf, "/grub"); 914 (void) mkdir(buf, S_IRWXU); 915 916 (void) strcat(buf, "/stage2"); 917 pcfs_fp = open(buf, O_WRONLY | O_CREAT, S_IRWXU); 918 if (pcfs_fp == -1) { 919 (void) fprintf(stderr, OPEN_FAIL_FILE, buf); 920 perror("open:"); 921 (void) umount(TMP_MNTPT); 922 exit(-1); 923 } 924 925 /* write stage2 to pcfs */ 926 for (i = 0; ; i++) { 927 int nread, nwrite; 928 nread = pread(stage2_fd, buf, SECTOR_SIZE, i * SECTOR_SIZE); 929 if (nowrite) 930 nwrite = nread; 931 else 932 nwrite = pwrite(pcfs_fp, buf, nread, i * SECTOR_SIZE); 933 if (nread < 0 || nwrite != nread) { 934 (void) fprintf(stderr, WRITE_FAIL_STAGE2_BLOCKS, 935 nread, nwrite); 936 break; 937 } 938 if (nread < SECTOR_SIZE) 939 break; /* end of file */ 940 } 941 (void) close(pcfs_fp); 942 (void) umount(TMP_MNTPT); 943 944 /* 945 * Now, get the blocklist from the device. 946 */ 947 bzero(blocklist, sizeof (blocklist)); 948 if (read_stage2_blocklist(dev_fd, blocklist) != 0) 949 exit(-1); 950 } 951