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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 | /* vi: set sw=4 ts=4: */ /* * mkfs.c - make a linux (minix) file-system. * * (C) 1991 Linus Torvalds. This file may be redistributed as per * the Linux copyright. */ /* * DD.MM.YY * * 24.11.91 - Time began. Used the fsck sources to get started. * * 25.11.91 - Corrected some bugs. Added support for ".badblocks" * The algorithm for ".badblocks" is a bit weird, but * it should work. Oh, well. * * 25.01.92 - Added the -l option for getting the list of bad blocks * out of a named file. (Dave Rivers, rivers@ponds.uucp) * * 28.02.92 - Added %-information when using -c. * * 28.02.93 - Added support for other namelengths than the original * 14 characters so that I can test the new kernel routines.. * * 09.10.93 - Make exit status conform to that required by fsutil * (Rik Faith, faith@cs.unc.edu) * * 31.10.93 - Added inode request feature, for backup floppies: use * 32 inodes, for a news partition use more. * (Scott Heavner, sdh@po.cwru.edu) * * 03.01.94 - Added support for file system valid flag. * (Dr. Wettstein, greg%wind.uucp@plains.nodak.edu) * * 30.10.94 - added support for v2 filesystem * (Andreas Schwab, schwab@issan.informatik.uni-dortmund.de) * * 09.11.94 - Added test to prevent overwrite of mounted fs adapted * from Theodore Ts'o's (tytso@athena.mit.edu) mke2fs * program. (Daniel Quinlan, quinlan@yggdrasil.com) * * 03.20.95 - Clear first 512 bytes of filesystem to make certain that * the filesystem is not misidentified as a MS-DOS FAT filesystem. * (Daniel Quinlan, quinlan@yggdrasil.com) * * 02.07.96 - Added small patch from Russell King to make the program a * good deal more portable (janl@math.uio.no) * * Usage: mkfs [-c | -l filename ] [-v] [-nXX] [-iXX] device [size-in-blocks] * * -c for readablility checking (SLOW!) * -l for getting a list of bad blocks from a file. * -n for namelength (currently the kernel only uses 14 or 30) * -i for number of inodes * -v for v2 filesystem * * The device may be a block device or a image of one, but this isn't * enforced (but it's not much fun on a character device :-). */ #include "internal.h" #include <stdio.h> #include <time.h> #include <unistd.h> #include <string.h> #include <signal.h> #include <fcntl.h> #include <ctype.h> #include <stdlib.h> #include <termios.h> #include <sys/stat.h> #include <sys/ioctl.h> #include <mntent.h> #include <getopt.h> #include <linux/fs.h> #include <linux/minix_fs.h> #ifdef MINIX2_SUPER_MAGIC2 #define HAVE_MINIX2 1 #endif #ifndef __GNUC__ #error "needs gcc for the bitop-__asm__'s" #endif #ifndef __linux__ #define volatile #endif #define MINIX_ROOT_INO 1 #define MINIX_BAD_INO 2 #define TEST_BUFFER_BLOCKS 16 #define MAX_GOOD_BLOCKS 512 #define UPPER(size,n) (((size)+((n)-1))/(n)) #define INODE_SIZE (sizeof(struct minix_inode)) #ifdef HAVE_MINIX2 #define INODE_SIZE2 (sizeof(struct minix2_inode)) #define INODE_BLOCKS UPPER(INODES, (version2 ? MINIX2_INODES_PER_BLOCK \ : MINIX_INODES_PER_BLOCK)) #else #define INODE_BLOCKS UPPER(INODES, (MINIX_INODES_PER_BLOCK)) #endif #define INODE_BUFFER_SIZE (INODE_BLOCKS * BLOCK_SIZE) #define BITS_PER_BLOCK (BLOCK_SIZE<<3) static char *program_name = "mkfs"; static char *device_name = NULL; static int DEV = -1; static long BLOCKS = 0; static int check = 0; static int badblocks = 0; static int namelen = 30; /* default (changed to 30, per Linus's suggestion, Sun Nov 21 08:05:07 1993) */ static int dirsize = 32; static int magic = MINIX_SUPER_MAGIC2; static int version2 = 0; static char root_block[BLOCK_SIZE] = "\0"; static char *inode_buffer = NULL; #define Inode (((struct minix_inode *) inode_buffer)-1) #ifdef HAVE_MINIX2 #define Inode2 (((struct minix2_inode *) inode_buffer)-1) #endif static char super_block_buffer[BLOCK_SIZE]; static char boot_block_buffer[512]; #define Super (*(struct minix_super_block *)super_block_buffer) #define INODES ((unsigned long)Super.s_ninodes) #ifdef HAVE_MINIX2 #define ZONES ((unsigned long)(version2 ? Super.s_zones : Super.s_nzones)) #else #define ZONES ((unsigned long)(Super.s_nzones)) #endif #define IMAPS ((unsigned long)Super.s_imap_blocks) #define ZMAPS ((unsigned long)Super.s_zmap_blocks) #define FIRSTZONE ((unsigned long)Super.s_firstdatazone) #define ZONESIZE ((unsigned long)Super.s_log_zone_size) #define MAXSIZE ((unsigned long)Super.s_max_size) #define MAGIC (Super.s_magic) #define NORM_FIRSTZONE (2+IMAPS+ZMAPS+INODE_BLOCKS) static char *inode_map; static char *zone_map; static unsigned short good_blocks_table[MAX_GOOD_BLOCKS]; static int used_good_blocks = 0; static unsigned long req_nr_inodes = 0; #define inode_in_use(x) (bit(inode_map,(x))) #define zone_in_use(x) (bit(zone_map,(x)-FIRSTZONE+1)) #define mark_inode(x) (setbit(inode_map,(x))) #define unmark_inode(x) (clrbit(inode_map,(x))) #define mark_zone(x) (setbit(zone_map,(x)-FIRSTZONE+1)) #define unmark_zone(x) (clrbit(zone_map,(x)-FIRSTZONE+1)) /* * Volatile to let gcc know that this doesn't return. When trying * to compile this under minix, volatile gives a warning, as * exit() isn't defined as volatile under minix. */ static volatile void die(char *str) { fprintf(stderr, "%s: %s\n", program_name, str); exit(8); } static volatile void show_usage() { fprintf(stderr, "BusyBox v%s (%s) multi-call binary -- GPL2\n\n", BB_VER, BB_BT); fprintf(stderr, "Usage: %s [-c | -l filename] [-nXX] [-iXX] /dev/name [blocks]\n\n", program_name); fprintf(stderr, "Make a MINIX filesystem.\n\n"); fprintf(stderr, "OPTIONS:\n"); fprintf(stderr, "\t-c\t\tCheck the device for bad blocks\n"); fprintf(stderr, "\t-n [14|30]\tSpecify the maximum length of filenames\n"); fprintf(stderr, "\t-i\t\tSpecify the number of inodes for the filesystem\n"); fprintf(stderr, "\t-l FILENAME\tRead the bad blocks list from FILENAME\n"); fprintf(stderr, "\t-v\t\tMake a Minix version 2 filesystem\n\n"); exit(16); } /* * Check to make certain that our new filesystem won't be created on * an already mounted partition. Code adapted from mke2fs, Copyright * (C) 1994 Theodore Ts'o. Also licensed under GPL. */ static void check_mount(void) { FILE *f; struct mntent *mnt; if ((f = setmntent(MOUNTED, "r")) == NULL) return; while ((mnt = getmntent(f)) != NULL) if (strcmp(device_name, mnt->mnt_fsname) == 0) break; endmntent(f); if (!mnt) return; die("%s is mounted; will not make a filesystem here!"); } static long valid_offset(int fd, int offset) { char ch; if (lseek(fd, offset, 0) < 0) return 0; if (read(fd, &ch, 1) < 1) return 0; return 1; } static int count_blocks(int fd) { int high, low; low = 0; for (high = 1; valid_offset(fd, high); high *= 2) low = high; while (low < high - 1) { const int mid = (low + high) / 2; if (valid_offset(fd, mid)) low = mid; else high = mid; } valid_offset(fd, 0); return (low + 1); } static int get_size(const char *file) { int fd; long size; fd = open(file, O_RDWR); if (fd < 0) { perror(file); exit(1); } if (ioctl(fd, BLKGETSIZE, &size) >= 0) { close(fd); return (size * 512); } size = count_blocks(fd); close(fd); return size; } static void write_tables(void) { /* Mark the super block valid. */ Super.s_state |= MINIX_VALID_FS; Super.s_state &= ~MINIX_ERROR_FS; if (lseek(DEV, 0, SEEK_SET)) die("seek to boot block failed in write_tables"); if (512 != write(DEV, boot_block_buffer, 512)) die("unable to clear boot sector"); if (BLOCK_SIZE != lseek(DEV, BLOCK_SIZE, SEEK_SET)) die("seek failed in write_tables"); if (BLOCK_SIZE != write(DEV, super_block_buffer, BLOCK_SIZE)) die("unable to write super-block"); if (IMAPS * BLOCK_SIZE != write(DEV, inode_map, IMAPS * BLOCK_SIZE)) die("unable to write inode map"); if (ZMAPS * BLOCK_SIZE != write(DEV, zone_map, ZMAPS * BLOCK_SIZE)) die("unable to write zone map"); if (INODE_BUFFER_SIZE != write(DEV, inode_buffer, INODE_BUFFER_SIZE)) die("unable to write inodes"); } static void write_block(int blk, char *buffer) { if (blk * BLOCK_SIZE != lseek(DEV, blk * BLOCK_SIZE, SEEK_SET)) die("seek failed in write_block"); if (BLOCK_SIZE != write(DEV, buffer, BLOCK_SIZE)) die("write failed in write_block"); } static int get_free_block(void) { int blk; if (used_good_blocks + 1 >= MAX_GOOD_BLOCKS) die("too many bad blocks"); if (used_good_blocks) blk = good_blocks_table[used_good_blocks - 1] + 1; else blk = FIRSTZONE; while (blk < ZONES && zone_in_use(blk)) blk++; if (blk >= ZONES) die("not enough good blocks"); good_blocks_table[used_good_blocks] = blk; used_good_blocks++; return blk; } static void mark_good_blocks(void) { int blk; for (blk = 0; blk < used_good_blocks; blk++) mark_zone(good_blocks_table[blk]); } inline int next(int zone) { if (!zone) zone = FIRSTZONE - 1; while (++zone < ZONES) if (zone_in_use(zone)) return zone; return 0; } static void make_bad_inode(void) { struct minix_inode *inode = &Inode[MINIX_BAD_INO]; int i, j, zone; int ind = 0, dind = 0; unsigned short ind_block[BLOCK_SIZE >> 1]; unsigned short dind_block[BLOCK_SIZE >> 1]; #define NEXT_BAD (zone = next(zone)) if (!badblocks) return; mark_inode(MINIX_BAD_INO); inode->i_nlinks = 1; inode->i_time = time(NULL); inode->i_mode = S_IFREG + 0000; inode->i_size = badblocks * BLOCK_SIZE; zone = next(0); for (i = 0; i < 7; i++) { inode->i_zone[i] = zone; if (!NEXT_BAD) goto end_bad; } inode->i_zone[7] = ind = get_free_block(); memset(ind_block, 0, BLOCK_SIZE); for (i = 0; i < 512; i++) { ind_block[i] = zone; if (!NEXT_BAD) goto end_bad; } inode->i_zone[8] = dind = get_free_block(); memset(dind_block, 0, BLOCK_SIZE); for (i = 0; i < 512; i++) { write_block(ind, (char *) ind_block); dind_block[i] = ind = get_free_block(); memset(ind_block, 0, BLOCK_SIZE); for (j = 0; j < 512; j++) { ind_block[j] = zone; if (!NEXT_BAD) goto end_bad; } } die("too many bad blocks"); end_bad: if (ind) write_block(ind, (char *) ind_block); if (dind) write_block(dind, (char *) dind_block); } #ifdef HAVE_MINIX2 static void make_bad_inode2(void) { struct minix2_inode *inode = &Inode2[MINIX_BAD_INO]; int i, j, zone; int ind = 0, dind = 0; unsigned long ind_block[BLOCK_SIZE >> 2]; unsigned long dind_block[BLOCK_SIZE >> 2]; if (!badblocks) return; mark_inode(MINIX_BAD_INO); inode->i_nlinks = 1; inode->i_atime = inode->i_mtime = inode->i_ctime = time(NULL); inode->i_mode = S_IFREG + 0000; inode->i_size = badblocks * BLOCK_SIZE; zone = next(0); for (i = 0; i < 7; i++) { inode->i_zone[i] = zone; if (!NEXT_BAD) goto end_bad; } inode->i_zone[7] = ind = get_free_block(); memset(ind_block, 0, BLOCK_SIZE); for (i = 0; i < 256; i++) { ind_block[i] = zone; if (!NEXT_BAD) goto end_bad; } inode->i_zone[8] = dind = get_free_block(); memset(dind_block, 0, BLOCK_SIZE); for (i = 0; i < 256; i++) { write_block(ind, (char *) ind_block); dind_block[i] = ind = get_free_block(); memset(ind_block, 0, BLOCK_SIZE); for (j = 0; j < 256; j++) { ind_block[j] = zone; if (!NEXT_BAD) goto end_bad; } } /* Could make triple indirect block here */ die("too many bad blocks"); end_bad: if (ind) write_block(ind, (char *) ind_block); if (dind) write_block(dind, (char *) dind_block); } #endif static void make_root_inode(void) { struct minix_inode *inode = &Inode[MINIX_ROOT_INO]; mark_inode(MINIX_ROOT_INO); inode->i_zone[0] = get_free_block(); inode->i_nlinks = 2; inode->i_time = time(NULL); if (badblocks) inode->i_size = 3 * dirsize; else { root_block[2 * dirsize] = '\0'; root_block[2 * dirsize + 1] = '\0'; inode->i_size = 2 * dirsize; } inode->i_mode = S_IFDIR + 0755; inode->i_uid = getuid(); if (inode->i_uid) inode->i_gid = getgid(); write_block(inode->i_zone[0], root_block); } #ifdef HAVE_MINIX2 static void make_root_inode2(void) { struct minix2_inode *inode = &Inode2[MINIX_ROOT_INO]; mark_inode(MINIX_ROOT_INO); inode->i_zone[0] = get_free_block(); inode->i_nlinks = 2; inode->i_atime = inode->i_mtime = inode->i_ctime = time(NULL); if (badblocks) inode->i_size = 3 * dirsize; else { root_block[2 * dirsize] = '\0'; root_block[2 * dirsize + 1] = '\0'; inode->i_size = 2 * dirsize; } inode->i_mode = S_IFDIR + 0755; inode->i_uid = getuid(); if (inode->i_uid) inode->i_gid = getgid(); write_block(inode->i_zone[0], root_block); } #endif static void setup_tables(void) { int i; unsigned long inodes; memset(super_block_buffer, 0, BLOCK_SIZE); memset(boot_block_buffer, 0, 512); MAGIC = magic; ZONESIZE = 0; MAXSIZE = version2 ? 0x7fffffff : (7 + 512 + 512 * 512) * 1024; ZONES = BLOCKS; /* some magic nrs: 1 inode / 3 blocks */ if (req_nr_inodes == 0) inodes = BLOCKS / 3; else inodes = req_nr_inodes; /* Round up inode count to fill block size */ #ifdef HAVE_MINIX2 if (version2) inodes = ((inodes + MINIX2_INODES_PER_BLOCK - 1) & ~(MINIX2_INODES_PER_BLOCK - 1)); else #endif inodes = ((inodes + MINIX_INODES_PER_BLOCK - 1) & ~(MINIX_INODES_PER_BLOCK - 1)); if (inodes > 65535) inodes = 65535; INODES = inodes; IMAPS = UPPER(INODES + 1, BITS_PER_BLOCK); ZMAPS = 0; i = 0; while (ZMAPS != UPPER(BLOCKS - (2 + IMAPS + ZMAPS + INODE_BLOCKS) + 1, BITS_PER_BLOCK) && i < 1000) { ZMAPS = UPPER(BLOCKS - (2 + IMAPS + ZMAPS + INODE_BLOCKS) + 1, BITS_PER_BLOCK); i++; } /* Real bad hack but overwise mkfs.minix can be thrown * in infinite loop... * try: * dd if=/dev/zero of=test.fs count=10 bs=1024 * /sbin/mkfs.minix -i 200 test.fs * */ if (i >= 999) { die("unable to allocate buffers for maps"); } FIRSTZONE = NORM_FIRSTZONE; inode_map = malloc(IMAPS * BLOCK_SIZE); zone_map = malloc(ZMAPS * BLOCK_SIZE); if (!inode_map || !zone_map) die("unable to allocate buffers for maps"); memset(inode_map, 0xff, IMAPS * BLOCK_SIZE); memset(zone_map, 0xff, ZMAPS * BLOCK_SIZE); for (i = FIRSTZONE; i < ZONES; i++) unmark_zone(i); for (i = MINIX_ROOT_INO; i <= INODES; i++) unmark_inode(i); inode_buffer = malloc(INODE_BUFFER_SIZE); if (!inode_buffer) die("unable to allocate buffer for inodes"); memset(inode_buffer, 0, INODE_BUFFER_SIZE); printf("%ld inodes\n", INODES); printf("%ld blocks\n", ZONES); printf("Firstdatazone=%ld (%ld)\n", FIRSTZONE, NORM_FIRSTZONE); printf("Zonesize=%d\n", BLOCK_SIZE << ZONESIZE); printf("Maxsize=%ld\n\n", MAXSIZE); } /* * Perform a test of a block; return the number of * blocks readable/writeable. */ long do_check(char *buffer, int try, unsigned int current_block) { long got; /* Seek to the correct loc. */ if (lseek(DEV, current_block * BLOCK_SIZE, SEEK_SET) != current_block * BLOCK_SIZE) { die("seek failed during testing of blocks"); } /* Try the read */ got = read(DEV, buffer, try * BLOCK_SIZE); if (got < 0) got = 0; if (got & (BLOCK_SIZE - 1)) { printf("Weird values in do_check: probably bugs\n"); } got /= BLOCK_SIZE; return got; } static unsigned int currently_testing = 0; static void alarm_intr(int alnum) { if (currently_testing >= ZONES) return; signal(SIGALRM, alarm_intr); alarm(5); if (!currently_testing) return; printf("%d ...", currently_testing); fflush(stdout); } static void check_blocks(void) { int try, got; static char buffer[BLOCK_SIZE * TEST_BUFFER_BLOCKS]; currently_testing = 0; signal(SIGALRM, alarm_intr); alarm(5); while (currently_testing < ZONES) { if (lseek(DEV, currently_testing * BLOCK_SIZE, SEEK_SET) != currently_testing * BLOCK_SIZE) die("seek failed in check_blocks"); try = TEST_BUFFER_BLOCKS; if (currently_testing + try > ZONES) try = ZONES - currently_testing; got = do_check(buffer, try, currently_testing); currently_testing += got; if (got == try) continue; if (currently_testing < FIRSTZONE) die("bad blocks before data-area: cannot make fs"); mark_zone(currently_testing); badblocks++; currently_testing++; } if (badblocks > 1) printf("%d bad blocks\n", badblocks); else if (badblocks == 1) printf("one bad block\n"); } static void get_list_blocks(filename) char *filename; { FILE *listfile; unsigned long blockno; listfile = fopen(filename, "r"); if (listfile == (FILE *) NULL) { die("can't open file of bad blocks"); } while (!feof(listfile)) { fscanf(listfile, "%ld\n", &blockno); mark_zone(blockno); badblocks++; } if (badblocks > 1) printf("%d bad blocks\n", badblocks); else if (badblocks == 1) printf("one bad block\n"); } extern int mkfs_minix_main(int argc, char **argv) { int i; char *tmp; struct stat statbuf; char *listfile = NULL; if (argc && *argv) program_name = *argv; if (INODE_SIZE * MINIX_INODES_PER_BLOCK != BLOCK_SIZE) die("bad inode size"); #ifdef HAVE_MINIX2 if (INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE) die("bad inode size"); #endif opterr = 0; while ((i = getopt(argc, argv, "ci:l:n:v")) != EOF) switch (i) { case 'c': check = 1; break; case 'i': req_nr_inodes = (unsigned long) atol(optarg); break; case 'l': listfile = optarg; break; case 'n': i = strtoul(optarg, &tmp, 0); if (*tmp) show_usage(); if (i == 14) magic = MINIX_SUPER_MAGIC; else if (i == 30) magic = MINIX_SUPER_MAGIC2; else show_usage(); namelen = i; dirsize = i + 2; break; case 'v': #ifdef HAVE_MINIX2 version2 = 1; #else fprintf(stderr, "%s: not compiled with minix v2 support\n", program_name, device_name); exit(-1); #endif break; default: show_usage(); } argc -= optind; argv += optind; if (argc > 0 && !device_name) { device_name = argv[0]; argc--; argv++; } if (argc > 0) { BLOCKS = strtol(argv[0], &tmp, 0); if (*tmp) { printf("strtol error: number of blocks not specified"); show_usage(); } } if (device_name && !BLOCKS) BLOCKS = get_size(device_name) / 1024; if (!device_name || BLOCKS < 10) { show_usage(); } #ifdef HAVE_MINIX2 if (version2) { if (namelen == 14) magic = MINIX2_SUPER_MAGIC; else magic = MINIX2_SUPER_MAGIC2; } else #endif if (BLOCKS > 65535) BLOCKS = 65535; check_mount(); /* is it already mounted? */ tmp = root_block; *(short *) tmp = 1; strcpy(tmp + 2, "."); tmp += dirsize; *(short *) tmp = 1; strcpy(tmp + 2, ".."); tmp += dirsize; *(short *) tmp = 2; strcpy(tmp + 2, ".badblocks"); DEV = open(device_name, O_RDWR); if (DEV < 0) die("unable to open %s"); if (fstat(DEV, &statbuf) < 0) die("unable to stat %s"); if (!S_ISBLK(statbuf.st_mode)) check = 0; else if (statbuf.st_rdev == 0x0300 || statbuf.st_rdev == 0x0340) die("will not try to make filesystem on '%s'"); setup_tables(); if (check) check_blocks(); else if (listfile) get_list_blocks(listfile); #ifdef HAVE_MINIX2 if (version2) { make_root_inode2(); make_bad_inode2(); } else #endif { make_root_inode(); make_bad_inode(); } mark_good_blocks(); write_tables(); return 0; } |