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 2010 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 3 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 case FDISK_EBADMAGIC: 322 (void) fprintf(stderr, NOSOLPAR); 323 exit(-1); 324 /*NOTREACHED*/ 325 case FDISK_ENOVGEOM: 326 (void) fprintf(stderr, NO_VIRT_GEOM); 327 exit(1); 328 break; 329 case FDISK_ENOPGEOM: 330 (void) fprintf(stderr, NO_PHYS_GEOM); 331 exit(1); 332 break; 333 case FDISK_ENOLGEOM: 334 (void) fprintf(stderr, NO_LABEL_GEOM); 335 exit(1); 336 break; 337 default: 338 (void) fprintf(stderr, LIBFDISK_INIT_FAIL); 339 exit(1); 340 break; 341 } 342 } 343 344 rval = fdisk_get_solaris_part(epp, &pno, &secnum, &numsec); 345 libfdisk_fini(&epp); 346 if (rval != FDISK_SUCCESS) { 347 /* No solaris logical partition */ 348 (void) fprintf(stderr, NOSOLPAR); 349 exit(-1); 350 } 351 352 start_sect = secnum; 353 partition = pno - 1; 354 log_part = 1; 355 356 found_part: 357 /* get confirmation for -m */ 358 if (write_mboot && !force_mboot) { 359 (void) fprintf(stdout, MBOOT_PROMPT); 360 if (getchar() != 'y') { 361 write_mboot = 0; 362 (void) fprintf(stdout, MBOOT_NOT_UPDATED); 363 exit(-1); 364 } 365 } 366 367 /* 368 * Currently if Solaris is in an extended partition we need to 369 * write GRUB to the MBR. Check for this. 370 */ 371 if (log_part && !write_mboot) { 372 write_mboot = 1; 373 } 374 375 /* 376 * warn, if Solaris in primary partition and GRUB not in MBR and 377 * partition is not active 378 */ 379 if (!log_part && part->bootid != 128 && !write_mboot) { 380 (void) fprintf(stdout, SOLPAR_INACTIVE, partition + 1); 381 } 382 383 return (start_sect); 384 } 385 386 static void 387 usage(char *progname) 388 { 389 (void) fprintf(stderr, USAGE, basename(progname)); 390 exit(-1); 391 } 392 393 static int 394 open_device(char *device) 395 { 396 int dev_fd; 397 struct stat stat; 398 char *raw_part; 399 400 is_floppy = strncmp(device, "/dev/rdsk", strlen("/dev/rdsk")) && 401 strncmp(device, "/dev/dsk", strlen("/dev/dsk")); 402 403 /* handle boot partition specification */ 404 if (!is_floppy && strstr(device, "p0:boot")) { 405 is_bootpar = 1; 406 } 407 408 raw_part = get_raw_partition(device); 409 410 if (nowrite) 411 dev_fd = open(raw_part, O_RDONLY); 412 else 413 dev_fd = open(raw_part, O_RDWR); 414 415 if (dev_fd == -1 || fstat(dev_fd, &stat) != 0) { 416 (void) fprintf(stderr, OPEN_FAIL, raw_part); 417 exit(-1); 418 } 419 if (S_ISCHR(stat.st_mode) == 0) { 420 (void) fprintf(stderr, NOT_RAW_DEVICE, raw_part); 421 exit(-1); 422 } 423 424 return (dev_fd); 425 } 426 427 static void 428 read_stage1_stage2(char *stage1, char *stage2) 429 { 430 int fd; 431 432 /* read the stage1 file from filesystem */ 433 fd = open(stage1, O_RDONLY); 434 if (fd == -1 || read(fd, stage1_buffer, SECTOR_SIZE) != SECTOR_SIZE) { 435 (void) fprintf(stderr, READ_FAIL_STAGE1, stage1); 436 exit(-1); 437 } 438 (void) close(fd); 439 440 /* read first two blocks of stage 2 from filesystem */ 441 stage2_fd = open(stage2, O_RDONLY); 442 if (stage2_fd == -1 || 443 read(stage2_fd, stage2_buffer, 2 * SECTOR_SIZE) 444 != 2 * SECTOR_SIZE) { 445 (void) fprintf(stderr, READ_FAIL_STAGE2, stage2); 446 exit(-1); 447 } 448 /* leave the stage2 file open for later */ 449 } 450 451 static void 452 read_bpb_sect(int dev_fd) 453 { 454 if (pread(dev_fd, bpb_sect, SECTOR_SIZE, 0) != SECTOR_SIZE) { 455 (void) fprintf(stderr, READ_FAIL_BPB); 456 exit(-1); 457 } 458 } 459 460 static void 461 read_boot_sect(char *device) 462 { 463 static int read_mbr = 0; 464 int i, fd; 465 char save[2]; 466 467 if (read_mbr) 468 return; 469 read_mbr = 1; 470 471 /* get the whole disk (p0) */ 472 i = strlen(device); 473 save[0] = device[i - 2]; 474 save[1] = device[i - 1]; 475 device[i - 2] = 'p'; 476 device[i - 1] = '0'; 477 478 device_p0 = strdup(device); 479 fd = open(device, O_RDONLY); 480 if (fd == -1 || read(fd, boot_sect, SECTOR_SIZE) != SECTOR_SIZE) { 481 (void) fprintf(stderr, READ_FAIL_MBR, device); 482 if (fd == -1) 483 perror("open"); 484 else 485 perror("read"); 486 exit(-1); 487 } 488 (void) close(fd); 489 device[i - 2] = save[0]; 490 device[i - 1] = save[1]; 491 } 492 493 static void 494 write_boot_sect(char *device) 495 { 496 int fd, len; 497 char *raw, *end; 498 struct stat stat; 499 500 /* make a copy and chop off ":boot" */ 501 raw = strdup(device); 502 end = strstr(raw, "p0:boot"); 503 if (end) 504 end[2] = 0; 505 506 /* open p0 (whole disk) */ 507 len = strlen(raw); 508 raw[len - 2] = 'p'; 509 raw[len - 1] = '0'; 510 fd = open(raw, O_WRONLY); 511 if (fd == -1 || fstat(fd, &stat) != 0) { 512 (void) fprintf(stderr, OPEN_FAIL, raw); 513 exit(-1); 514 } 515 if (!nowrite && 516 pwrite(fd, stage1_buffer, SECTOR_SIZE, 0) != SECTOR_SIZE) { 517 (void) fprintf(stderr, WRITE_FAIL_BOOTSEC); 518 exit(-1); 519 } 520 (void) fprintf(stdout, WRITE_MBOOT); 521 (void) close(fd); 522 } 523 524 static void 525 modify_and_write_stage1(int dev_fd) 526 { 527 if (is_floppy) { 528 stage2_first_sector = blocklist[0]; 529 /* copy bios parameter block (for fat fs) */ 530 bcopy(bpb_sect + STAGE1_BPB_OFFSET, 531 stage1_buffer + STAGE1_BPB_OFFSET, STAGE1_BPB_SIZE); 532 } else if (is_bootpar) { 533 stage2_first_sector = get_start_sector(dev_fd) + blocklist[0]; 534 /* copy bios parameter block (for fat fs) and MBR */ 535 bcopy(bpb_sect + STAGE1_BPB_OFFSET, 536 stage1_buffer + STAGE1_BPB_OFFSET, STAGE1_BPB_SIZE); 537 bcopy(boot_sect + BOOTSZ, stage1_buffer + BOOTSZ, 512 - BOOTSZ); 538 *((unsigned char *)(stage1_buffer + STAGE1_FORCE_LBA)) = 1; 539 } else { 540 stage2_first_sector = get_start_sector(dev_fd) + STAGE2_BLKOFF; 541 /* copy MBR to stage1 in case of overwriting MBR sector */ 542 bcopy(boot_sect + BOOTSZ, stage1_buffer + BOOTSZ, 512 - BOOTSZ); 543 *((unsigned char *)(stage1_buffer + STAGE1_FORCE_LBA)) = 1; 544 } 545 546 /* modify default stage1 file generated by GRUB */ 547 *((ulong_t *)(stage1_buffer + STAGE1_STAGE2_SECTOR)) 548 = stage2_first_sector; 549 *((ushort_t *)(stage1_buffer + STAGE1_STAGE2_ADDRESS)) 550 = STAGE2_MEMADDR; 551 *((ushort_t *)(stage1_buffer + STAGE1_STAGE2_SEGMENT)) 552 = STAGE2_MEMADDR >> 4; 553 554 /* 555 * XXX the default grub distribution also: 556 * - Copy the possible MBR/extended part table 557 * - Set the boot drive of stage1 558 */ 559 560 /* write stage1/pboot to 1st sector */ 561 if (!nowrite && 562 pwrite(dev_fd, stage1_buffer, SECTOR_SIZE, 0) != SECTOR_SIZE) { 563 (void) fprintf(stderr, WRITE_FAIL_PBOOT); 564 exit(-1); 565 } 566 567 if (is_floppy) { 568 (void) fprintf(stdout, WRITE_BOOTSEC_FLOPPY); 569 } else { 570 (void) fprintf(stdout, WRITE_PBOOT, 571 partition, get_start_sector(dev_fd)); 572 } 573 } 574 575 static void check_extended_support(char *stage2) 576 { 577 char *cmp = stage2_buffer + STAGE2_SIGN_OFFSET - 1; 578 579 if ((*cmp++ != '\xEE') && memcmp(cmp, extended_sig, HASH_SIZE) != 0) { 580 fprintf(stderr, "%s does not support extended versioning\n", 581 stage2); 582 do_version = 0; 583 } 584 } 585 586 587 static void print_info() 588 { 589 int i; 590 591 if (strip) { 592 fprintf(stdout, "%s\n", verstring); 593 } else { 594 fprintf(stdout, "Grub extended version information : %s\n", 595 verstring); 596 fprintf(stdout, "Grub stage2 (MD5) signature : "); 597 } 598 599 for (i = 0; i < HASH_SIZE; i++) 600 fprintf(stdout, "%02x", (unsigned char)signature[i]); 601 602 fprintf(stdout, "\n"); 603 } 604 605 static int 606 read_stage2_info(int dev_fd) 607 { 608 int ret; 609 int first_offset, second_offset; 610 char *sign; 611 612 if (is_floppy || is_bootpar) { 613 614 ret = pread(dev_fd, stage1_buffer, SECTOR_SIZE, 0); 615 if (ret != SECTOR_SIZE) { 616 perror("Error reading stage1 sector"); 617 return (1); 618 } 619 620 first_offset = *((ulong_t *)(stage1_buffer + 621 STAGE1_STAGE2_SECTOR)); 622 623 /* Start reading in the first sector of stage 2 */ 624 625 ret = pread(dev_fd, stage2_buffer, SECTOR_SIZE, first_offset * 626 SECTOR_SIZE); 627 if (ret != SECTOR_SIZE) { 628 perror("Error reading stage2 first sector"); 629 return (1); 630 } 631 632 /* From the block list section grab stage2 second sector */ 633 634 second_offset = *((ulong_t *)(stage2_buffer + 635 STAGE2_BLOCKLIST)); 636 637 ret = pread(dev_fd, stage2_buffer + SECTOR_SIZE, SECTOR_SIZE, 638 second_offset * SECTOR_SIZE); 639 if (ret != SECTOR_SIZE) { 640 perror("Error reading stage2 second sector"); 641 return (1); 642 } 643 } else { 644 ret = pread(dev_fd, stage2_buffer, 2 * SECTOR_SIZE, 645 STAGE2_BLKOFF * SECTOR_SIZE); 646 if (ret != 2 * SECTOR_SIZE) { 647 perror("Error reading stage2 sectors"); 648 return (1); 649 } 650 } 651 652 sign = stage2_buffer + STAGE2_SIGN_OFFSET - 1; 653 if (*sign++ != '\xEE') 654 return (1); 655 (void) memcpy(signature, sign, HASH_SIZE); 656 sign = stage2_buffer + STAGE2_PKG_VERSION; 657 (void) strncpy(verstring, sign, VERSION_SIZE); 658 return (0); 659 } 660 661 662 static int 663 compute_and_write_md5hash(char *dest) 664 { 665 struct stat sb; 666 char *buffer; 667 668 if (fstat(stage2_fd, &sb) == -1) 669 return (-1); 670 671 buffer = malloc(sb.st_size); 672 if (buffer == NULL) 673 return (-1); 674 675 if (lseek(stage2_fd, 0, SEEK_SET) == -1) 676 return (-1); 677 if (read(stage2_fd, buffer, sb.st_size) < 0) 678 return (-1); 679 680 md5_calc(dest, buffer, sb.st_size); 681 free(buffer); 682 return (0); 683 } 684 685 686 #define START_BLOCK(pos) (*(ulong_t *)(pos)) 687 #define NUM_BLOCK(pos) (*(ushort_t *)((pos) + 4)) 688 #define START_SEG(pos) (*(ushort_t *)((pos) + 6)) 689 690 static void 691 modify_and_write_stage2(int dev_fd) 692 { 693 int nrecord; 694 off_t offset; 695 char *dest; 696 697 if (do_version) { 698 dest = stage2_buffer + STAGE2_SIGN_OFFSET; 699 if (compute_and_write_md5hash(dest) < 0) 700 perror("MD5 operation"); 701 dest = stage2_buffer + STAGE2_PKG_VERSION; 702 (void) strncpy(dest, verstring, VERSION_SIZE); 703 } 704 705 if (is_floppy || is_bootpar) { 706 int i = 0; 707 uint32_t partition_offset; 708 uint32_t install_addr = 0x8200; 709 uchar_t *pos = (uchar_t *)stage2_buffer + STAGE2_BLOCKLIST; 710 711 stage2_first_sector = blocklist[0]; 712 713 /* figure out the second sector */ 714 if (blocklist[1] > 1) { 715 blocklist[0]++; 716 blocklist[1]--; 717 } else { 718 i += 2; 719 } 720 stage2_second_sector = blocklist[i]; 721 722 if (is_floppy) 723 partition_offset = 0; 724 else /* solaris boot partition */ 725 partition_offset = get_start_sector(dev_fd); 726 727 /* install the blocklist at the end of stage2_buffer */ 728 while (blocklist[i]) { 729 if (START_BLOCK(pos - 8) != 0 && 730 START_BLOCK(pos - 8) != blocklist[i + 2]) { 731 (void) fprintf(stderr, PCFS_FRAGMENTED); 732 exit(-1); 733 } 734 START_BLOCK(pos) = blocklist[i] + partition_offset; 735 START_SEG(pos) = (ushort_t)(install_addr >> 4); 736 NUM_BLOCK(pos) = blocklist[i + 1]; 737 install_addr += blocklist[i + 1] * SECTOR_SIZE; 738 pos -= 8; 739 i += 2; 740 } 741 742 } else { 743 /* 744 * In a solaris partition, stage2 is written to contiguous 745 * blocks. So we update the starting block only. 746 */ 747 *((ulong_t *)(stage2_buffer + STAGE2_BLOCKLIST)) = 748 stage2_first_sector + 1; 749 } 750 751 if (is_floppy) { 752 /* modify the config file to add (fd0) */ 753 char *config_file = stage2_buffer + STAGE2_VER_STRING; 754 while (*config_file++) 755 ; 756 strcpy(config_file, "(fd0)/boot/grub/menu.lst"); 757 } else { 758 /* force lba and set disk partition */ 759 *((unsigned char *) (stage2_buffer + STAGE2_FORCE_LBA)) = 1; 760 *((long *)(stage2_buffer + STAGE2_INSTALLPART)) 761 = (partition << 16) | (slice << 8) | 0xff; 762 } 763 764 /* modification done, now do the writing */ 765 if (is_floppy || is_bootpar) { 766 /* we rewrite block 0 and 1 and that's it */ 767 if (!nowrite && 768 (pwrite(dev_fd, stage2_buffer, SECTOR_SIZE, 769 stage2_first_sector * SECTOR_SIZE) != SECTOR_SIZE || 770 pwrite(dev_fd, stage2_buffer + SECTOR_SIZE, SECTOR_SIZE, 771 stage2_second_sector * SECTOR_SIZE) != SECTOR_SIZE)) { 772 (void) fprintf(stderr, WRITE_FAIL_STAGE2); 773 exit(-1); 774 } 775 (void) fprintf(stdout, WRITE_STAGE2_PCFS); 776 return; 777 } 778 779 /* for disk, write stage2 starting at STAGE2_BLKOFF sector */ 780 offset = STAGE2_BLKOFF; 781 782 /* write the modified first two sectors */ 783 if (!nowrite && pwrite(dev_fd, stage2_buffer, 2 * SECTOR_SIZE, 784 offset * SECTOR_SIZE) != 2 * SECTOR_SIZE) { 785 (void) fprintf(stderr, WRITE_FAIL_STAGE2); 786 exit(-1); 787 } 788 789 /* write the remaining sectors */ 790 nrecord = 2; 791 offset += 2; 792 for (;;) { 793 int nread, nwrite; 794 nread = pread(stage2_fd, stage2_buffer, SECTOR_SIZE, 795 nrecord * SECTOR_SIZE); 796 if (nread > 0 && !nowrite) 797 nwrite = pwrite(dev_fd, stage2_buffer, SECTOR_SIZE, 798 offset * SECTOR_SIZE); 799 else 800 nwrite = SECTOR_SIZE; 801 if (nread < 0 || nwrite != SECTOR_SIZE) { 802 (void) fprintf(stderr, WRITE_FAIL_STAGE2_BLOCKS, 803 nread, nwrite); 804 break; 805 } 806 if (nread > 0) { 807 nrecord ++; 808 offset ++; 809 } 810 if (nread < SECTOR_SIZE) 811 break; /* end of file */ 812 } 813 (void) fprintf(stdout, WRITE_STAGE2_DISK, 814 partition, nrecord, STAGE2_BLKOFF, stage2_first_sector); 815 } 816 817 static char * 818 get_raw_partition(char *device) 819 { 820 int len; 821 struct mboot *mboot; 822 static char *raw = NULL; 823 824 if (raw) 825 return (raw); 826 raw = strdup(device); 827 828 if (is_floppy) 829 return (raw); 830 831 if (is_bootpar) { 832 int i; 833 char *end = strstr(raw, "p0:boot"); 834 835 end[2] = 0; /* chop off :boot */ 836 read_boot_sect(raw); 837 mboot = (struct mboot *)boot_sect; 838 for (i = 0; i < FD_NUMPART; i++) { 839 struct ipart *part = (struct ipart *)mboot->parts + i; 840 if (part->systid == 0xbe) /* solaris boot part */ 841 break; 842 } 843 844 if (i == FD_NUMPART) { 845 (void) fprintf(stderr, BOOTPAR_NOTFOUND, device); 846 exit(-1); 847 } 848 end[1] = '1' + i; /* set partition name */ 849 return (raw); 850 } 851 852 /* For disk, remember slice and return whole fdisk partition */ 853 len = strlen(raw); 854 if (raw[len - 2] != 's' || raw[len - 1] == '2') { 855 (void) fprintf(stderr, NOT_ROOT_SLICE); 856 exit(-1); 857 } 858 slice = atoi(&raw[len - 1]); 859 860 raw[len - 2] = 's'; 861 raw[len - 1] = '2'; 862 return (raw); 863 } 864 865 #define TMP_MNTPT "/tmp/installgrub_pcfs" 866 static void 867 copy_stage2(int dev_fd, char *device) 868 { 869 FILE *mntfp; 870 int i, pcfs_fp; 871 char buf[SECTOR_SIZE]; 872 char *cp; 873 struct mnttab mp = {0}, mpref = {0}; 874 875 /* convert raw to block device name by removing the first 'r' */ 876 (void) strncpy(buf, device, sizeof (buf)); 877 buf[sizeof (buf) - 1] = 0; 878 cp = strchr(buf, 'r'); 879 if (cp == NULL) { 880 (void) fprintf(stderr, CONVERT_FAIL, device); 881 exit(-1); 882 } 883 do { 884 *cp = *(cp + 1); 885 } while (*(++cp)); 886 887 /* get the mount point, if any */ 888 mntfp = fopen("/etc/mnttab", "r"); 889 if (mntfp == NULL) { 890 (void) fprintf(stderr, OPEN_FAIL_FILE, "/etc/mnttab"); 891 exit(-1); 892 } 893 894 mpref.mnt_special = buf; 895 if (getmntany(mntfp, &mp, &mpref) != 0) { 896 char cmd[128]; 897 898 /* not mounted, try remount */ 899 (void) mkdir(TMP_MNTPT, S_IRWXU); 900 (void) snprintf(cmd, sizeof (cmd), "mount -F pcfs %s %s", 901 buf, TMP_MNTPT); 902 (void) system(cmd); 903 rewind(mntfp); 904 bzero(&mp, sizeof (mp)); 905 if (getmntany(mntfp, &mp, &mpref) != 0) { 906 (void) fprintf(stderr, MOUNT_FAIL, buf); 907 exit(-1); 908 } 909 } 910 911 (void) snprintf(buf, sizeof (buf), 912 "%s/boot", mp.mnt_mountp); 913 (void) mkdir(buf, S_IRWXU); 914 (void) strcat(buf, "/grub"); 915 (void) mkdir(buf, S_IRWXU); 916 917 (void) strcat(buf, "/stage2"); 918 pcfs_fp = open(buf, O_WRONLY | O_CREAT, S_IRWXU); 919 if (pcfs_fp == -1) { 920 (void) fprintf(stderr, OPEN_FAIL_FILE, buf); 921 perror("open:"); 922 (void) umount(TMP_MNTPT); 923 exit(-1); 924 } 925 926 /* write stage2 to pcfs */ 927 for (i = 0; ; i++) { 928 int nread, nwrite; 929 nread = pread(stage2_fd, buf, SECTOR_SIZE, i * SECTOR_SIZE); 930 if (nowrite) 931 nwrite = nread; 932 else 933 nwrite = pwrite(pcfs_fp, buf, nread, i * SECTOR_SIZE); 934 if (nread < 0 || nwrite != nread) { 935 (void) fprintf(stderr, WRITE_FAIL_STAGE2_BLOCKS, 936 nread, nwrite); 937 break; 938 } 939 if (nread < SECTOR_SIZE) 940 break; /* end of file */ 941 } 942 (void) close(pcfs_fp); 943 (void) umount(TMP_MNTPT); 944 945 /* 946 * Now, get the blocklist from the device. 947 */ 948 bzero(blocklist, sizeof (blocklist)); 949 if (read_stage2_blocklist(dev_fd, blocklist) != 0) 950 exit(-1); 951 } 952