mke2fs.c revision f635d7f65bd002984ce9a202d491d4f187b996b2
1/* 2 * mke2fs.c - Make a ext2fs filesystem. 3 * 4 * Copyright (C) 1994, 1995, 1996, 1997 Theodore Ts'o. 5 * 6 * %Begin-Header% 7 * This file may be redistributed under the terms of the GNU Public 8 * License. 9 * %End-Header% 10 */ 11 12/* Usage: mke2fs [options] device 13 * 14 * The device may be a block device or a image of one, but this isn't 15 * enforced (but it's not much fun on a character device :-). 16 */ 17 18#include <stdio.h> 19#include <string.h> 20#include <fcntl.h> 21#include <ctype.h> 22#include <termios.h> 23#include <time.h> 24#ifdef HAVE_GETOPT_H 25#include <getopt.h> 26#endif 27#ifdef HAVE_UNISTD_H 28#include <unistd.h> 29#endif 30#ifdef HAVE_STDLIB_H 31#include <stdlib.h> 32#endif 33#ifdef HAVE_ERRNO_H 34#include <errno.h> 35#endif 36#ifdef HAVE_MNTENT_H 37#include <mntent.h> 38#endif 39#include <malloc.h> 40#include <sys/ioctl.h> 41#include <sys/types.h> 42#include <sys/stat.h> 43#include <stdio.h> 44 45#ifdef HAVE_LINUX_FS_H 46#include <linux/fs.h> 47#endif 48#include <linux/ext2_fs.h> 49#ifdef HAVE_LINUX_MAJOR_H 50#include <linux/major.h> 51#endif 52 53#include "et/com_err.h" 54#include "uuid/uuid.h" 55#include "ext2fs/ext2fs.h" 56#include "../version.h" 57 58#define STRIDE_LENGTH 8 59 60#ifndef sparc 61#define ZAP_BOOTBLOCK 62#endif 63 64extern int isatty(int); 65extern FILE *fpopen(const char *cmd, const char *mode); 66 67const char * program_name = "mke2fs"; 68const char * device_name = NULL; 69 70/* Command line options */ 71int cflag = 0; 72int verbose = 0; 73int quiet = 0; 74int super_only = 0; 75int force = 0; 76char *bad_blocks_filename = 0; 77__u32 fs_stride = 0; 78 79struct ext2_super_block param; 80char *creator_os = NULL; 81char *volume_label = NULL; 82char *mount_dir = NULL; 83 84static void usage(NOARGS) 85{ 86 fprintf(stderr, "Usage: %s [-c|-t|-l filename] [-b block-size] " 87 "[-f fragment-size]\n\t[-i bytes-per-inode] " 88 "[-m reserved-blocks-percentage] [-qvS]\n\t" 89 "[-o creator-os] [-g blocks-per-group] [-L volume-label]\n\t" 90 "[-M last-mounted-directory] [-r fs-revision] [-R raid_opts]\n\t" 91 "device [blocks-count]\n", 92 program_name); 93 exit(1); 94} 95 96static int log2(int arg) 97{ 98 int l = 0; 99 100 arg >>= 1; 101 while (arg) { 102 l++; 103 arg >>= 1; 104 } 105 return l; 106} 107 108static void check_plausibility(NOARGS) 109{ 110#ifdef HAVE_LINUX_MAJOR_H 111 int val; 112 struct stat s; 113 114 val = stat(device_name, &s); 115 116 if(val == -1) { 117 printf("Could not stat %s --- %s\n", device_name, 118 error_message(errno)); 119 if (errno == ENOENT) 120 printf("\nThe device apparently does not exist; " 121 "did yo specify it correctly?\n"); 122 exit(1); 123 } 124 if(!S_ISBLK(s.st_mode)) { 125 printf("%s is not a block special device.\n", device_name); 126 printf("Proceed anyway? (y,n) "); 127 if (getchar() != 'y') 128 exit(1); 129 return; 130 } 131 if ((MAJOR(s.st_rdev) == HD_MAJOR && MINOR(s.st_rdev)%64 == 0) || 132 (MAJOR(s.st_rdev) == SCSI_DISK_MAJOR && 133 MINOR(s.st_rdev)%16 == 0)) { 134 printf("%s is entire device, not just one partition!\n", 135 device_name); 136 printf("Proceed anyway? (y,n) "); 137 if (getchar() != 'y') 138 exit(1); 139 return; 140 } 141#endif 142} 143 144static void check_mount(NOARGS) 145{ 146 errcode_t retval; 147 int mount_flags; 148 149 retval = ext2fs_check_if_mounted(device_name, &mount_flags); 150 if (retval) { 151 com_err("ext2fs_check_if_mount", retval, 152 "while determining whether %s is mounted.", 153 device_name); 154 return; 155 } 156 if (!(mount_flags & EXT2_MF_MOUNTED)) 157 return; 158 159 fprintf(stderr, "%s is mounted; will not make a filesystem here!\n", 160 device_name); 161 exit(1); 162} 163 164/* 165 * Helper function for read_bb_file and test_disk 166 */ 167static void invalid_block(ext2_filsys fs, blk_t blk) 168{ 169 printf("Bad block %u out of range; ignored.\n", blk); 170 return; 171} 172 173/* 174 * Reads the bad blocks list from a file 175 */ 176static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list, 177 const char *bad_blocks_file) 178{ 179 FILE *f; 180 errcode_t retval; 181 182 f = fopen(bad_blocks_file, "r"); 183 if (!f) { 184 com_err("read_bad_blocks_file", errno, 185 "while trying to open %s", bad_blocks_file); 186 exit(1); 187 } 188 retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block); 189 fclose (f); 190 if (retval) { 191 com_err("ext2fs_read_bb_FILE", retval, 192 "while reading in list of bad blocks from file"); 193 exit(1); 194 } 195} 196 197/* 198 * Runs the badblocks program to test the disk 199 */ 200static void test_disk(ext2_filsys fs, badblocks_list *bb_list) 201{ 202 FILE *f; 203 errcode_t retval; 204 char buf[1024]; 205 206 sprintf(buf, "badblocks -b %d %s%s %d", fs->blocksize, 207 quiet ? "" : "-s ", fs->device_name, 208 fs->super->s_blocks_count); 209 if (verbose) 210 printf("Running command: %s\n", buf); 211 f = popen(buf, "r"); 212 if (!f) { 213 com_err("popen", errno, 214 "while trying run '%s'", buf); 215 exit(1); 216 } 217 retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block); 218 pclose(f); 219 if (retval) { 220 com_err("ext2fs_read_bb_FILE", retval, 221 "while processing list of bad blocks from program"); 222 exit(1); 223 } 224} 225 226static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list) 227{ 228 int i, j; 229 int must_be_good; 230 blk_t blk; 231 badblocks_iterate bb_iter; 232 errcode_t retval; 233 blk_t group_block; 234 int group; 235 int group_bad; 236 237 if (!bb_list) 238 return; 239 240 /* 241 * The primary superblock and group descriptors *must* be 242 * good; if not, abort. 243 */ 244 must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks; 245 for (i = fs->super->s_first_data_block; i <= must_be_good; i++) { 246 if (badblocks_list_test(bb_list, i)) { 247 fprintf(stderr, "Block %d in primary superblock/group " 248 "descriptor area bad.\n", i); 249 fprintf(stderr, "Blocks %d through %d must be good " 250 "in order to build a filesystem.\n", 251 fs->super->s_first_data_block, must_be_good); 252 fprintf(stderr, "Aborting....\n"); 253 exit(1); 254 } 255 } 256 257 /* 258 * See if any of the bad blocks are showing up in the backup 259 * superblocks and/or group descriptors. If so, issue a 260 * warning and adjust the block counts appropriately. 261 */ 262 group_block = fs->super->s_first_data_block + 263 fs->super->s_blocks_per_group; 264 group_bad = 0; 265 266 for (i = 1; i < fs->group_desc_count; i++) { 267 for (j=0; j < fs->desc_blocks+1; j++) { 268 if (badblocks_list_test(bb_list, group_block + 269 j)) { 270 if (!group_bad) 271 fprintf(stderr, 272"Warning: the backup superblock/group descriptors at block %d contain\n" 273" bad blocks.\n\n", 274 group_block); 275 group_bad++; 276 group = ext2fs_group_of_blk(fs, group_block+j); 277 fs->group_desc[group].bg_free_blocks_count++; 278 fs->super->s_free_blocks_count++; 279 } 280 } 281 group_block += fs->super->s_blocks_per_group; 282 } 283 284 /* 285 * Mark all the bad blocks as used... 286 */ 287 retval = badblocks_list_iterate_begin(bb_list, &bb_iter); 288 if (retval) { 289 com_err("badblocks_list_iterate_begin", retval, 290 "while marking bad blocks as used"); 291 exit(1); 292 } 293 while (badblocks_list_iterate(bb_iter, &blk)) 294 ext2fs_mark_block_bitmap(fs->block_map, blk); 295 badblocks_list_iterate_end(bb_iter); 296} 297 298static void write_inode_tables(ext2_filsys fs) 299{ 300 errcode_t retval; 301 blk_t blk; 302 int i, j, num, count; 303 char *buf; 304 305 buf = malloc(fs->blocksize * STRIDE_LENGTH); 306 if (!buf) { 307 com_err("malloc", ENOMEM, "while allocating zeroizing buffer"); 308 exit(1); 309 } 310 memset(buf, 0, fs->blocksize * STRIDE_LENGTH); 311 312 if (!quiet) 313 printf("Writing inode tables: "); 314 for (i = 0; i < fs->group_desc_count; i++) { 315 if (!quiet) 316 printf("%4d/%4ld", i, fs->group_desc_count); 317 318 blk = fs->group_desc[i].bg_inode_table; 319 num = fs->inode_blocks_per_group; 320 321 for (j=0; j < num; j += STRIDE_LENGTH, blk += STRIDE_LENGTH) { 322 if (num-j > STRIDE_LENGTH) 323 count = STRIDE_LENGTH; 324 else 325 count = num - j; 326 retval = io_channel_write_blk(fs->io, blk, count, buf); 327 if (retval) 328 printf("Warning: could not write %d blocks " 329 "in inode table starting at %d: %s\n", 330 count, blk, error_message(retval)); 331 } 332 if (!quiet) 333 printf("\b\b\b\b\b\b\b\b\b"); 334 } 335 free(buf); 336 if (!quiet) 337 printf("done \n"); 338} 339 340static void create_root_dir(ext2_filsys fs) 341{ 342 errcode_t retval; 343 struct ext2_inode inode; 344 345 retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0); 346 if (retval) { 347 com_err("ext2fs_mkdir", retval, "while creating root dir"); 348 exit(1); 349 } 350 if (geteuid()) { 351 retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode); 352 if (retval) { 353 com_err("ext2fs_read_inode", retval, 354 "while reading root inode"); 355 exit(1); 356 } 357 inode.i_uid = getuid(); 358 if (inode.i_uid) 359 inode.i_gid = getgid(); 360 retval = ext2fs_write_inode(fs, EXT2_ROOT_INO, &inode); 361 if (retval) { 362 com_err("ext2fs_write_inode", retval, 363 "while setting root inode ownership"); 364 exit(1); 365 } 366 } 367} 368 369static void create_lost_and_found(ext2_filsys fs) 370{ 371 errcode_t retval; 372 ino_t ino; 373 const char *name = "lost+found"; 374 int i; 375 376 retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name); 377 if (retval) { 378 com_err("ext2fs_mkdir", retval, "while creating /lost+found"); 379 exit(1); 380 } 381 382 retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino); 383 if (retval) { 384 com_err("ext2_lookup", retval, "while looking up /lost+found"); 385 exit(1); 386 } 387 388 for (i=1; i < EXT2_NDIR_BLOCKS; i++) { 389 retval = ext2fs_expand_dir(fs, ino); 390 if (retval) { 391 com_err("ext2fs_expand_dir", retval, 392 "while expanding /lost+found"); 393 exit(1); 394 } 395 } 396} 397 398static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list) 399{ 400 errcode_t retval; 401 402 ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO); 403 fs->group_desc[0].bg_free_inodes_count--; 404 fs->super->s_free_inodes_count--; 405 retval = ext2fs_update_bb_inode(fs, bb_list); 406 if (retval) { 407 com_err("ext2fs_update_bb_inode", retval, 408 "while setting bad block inode"); 409 exit(1); 410 } 411 412} 413 414static void reserve_inodes(ext2_filsys fs) 415{ 416 ino_t i; 417 int group; 418 419 for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++) { 420 ext2fs_mark_inode_bitmap(fs->inode_map, i); 421 group = ext2fs_group_of_ino(fs, i); 422 fs->group_desc[group].bg_free_inodes_count--; 423 fs->super->s_free_inodes_count--; 424 } 425 ext2fs_mark_ib_dirty(fs); 426} 427 428#ifdef ZAP_BOOTBLOCK 429static void zap_bootblock(ext2_filsys fs) 430{ 431 char buf[512]; 432 int retval; 433 434 memset(buf, 0, 512); 435 436 retval = io_channel_write_blk(fs->io, 0, -512, buf); 437 if (retval) 438 printf("Warning: could not erase block 0: %s\n", 439 error_message(retval)); 440} 441#endif 442 443 444static void show_stats(ext2_filsys fs) 445{ 446 struct ext2fs_sb *s = (struct ext2fs_sb *) fs->super; 447 char buf[80]; 448 blk_t group_block; 449 int i, col_left; 450 451 if (param.s_blocks_count != s->s_blocks_count) 452 printf("warning: %d blocks unused.\n\n", 453 param.s_blocks_count - s->s_blocks_count); 454 455 switch (fs->super->s_creator_os) { 456 case EXT2_OS_LINUX: printf ("Linux"); break; 457 case EXT2_OS_HURD: printf ("GNU/hurd"); break; 458 case EXT2_OS_MASIX: printf ("Masix"); break; 459 default: printf ("(unknown os)"); 460 } 461 printf (" ext2 filesystem format\n"); 462 memset(buf, 0, sizeof(buf)); 463 strncpy(buf, s->s_volume_name, sizeof(s->s_volume_name)); 464 printf("Filesystem label=%s\n", buf); 465 printf("%u inodes, %u blocks\n", s->s_inodes_count, 466 s->s_blocks_count); 467 printf("%u blocks (%2.2f%%) reserved for the super user\n", 468 s->s_r_blocks_count, 469 100.0 * s->s_r_blocks_count / s->s_blocks_count); 470 printf("First data block=%u\n", s->s_first_data_block); 471 printf("Block size=%u (log=%u)\n", fs->blocksize, 472 s->s_log_block_size); 473 printf("Fragment size=%u (log=%u)\n", fs->fragsize, 474 s->s_log_frag_size); 475 printf("%lu block group%s\n", fs->group_desc_count, 476 (fs->group_desc_count > 1) ? "s" : ""); 477 printf("%u blocks per group, %u fragments per group\n", 478 s->s_blocks_per_group, s->s_frags_per_group); 479 printf("%u inodes per group\n", s->s_inodes_per_group); 480 481 if (fs->group_desc_count == 1) { 482 printf("\n"); 483 return; 484 } 485 486 printf("Superblock backups stored on blocks: "); 487 group_block = s->s_first_data_block; 488 col_left = 0; 489 for (i = 1; i < fs->group_desc_count; i++) { 490 group_block += s->s_blocks_per_group; 491 if (!ext2fs_bg_has_super(fs, i)) 492 continue; 493 if (!col_left--) { 494 printf("\n\t"); 495 col_left = 8; 496 } 497 printf("%u", group_block); 498 if (i != fs->group_desc_count - 1) 499 printf(", "); 500 } 501 printf("\n\n"); 502} 503 504#ifndef HAVE_STRCASECMP 505static int strcasecmp (char *s1, char *s2) 506{ 507 while (*s1 && *s2) { 508 int ch1 = *s1++, ch2 = *s2++; 509 if (isupper (ch1)) 510 ch1 = tolower (ch1); 511 if (isupper (ch2)) 512 ch2 = tolower (ch2); 513 if (ch1 != ch2) 514 return ch1 - ch2; 515 } 516 return *s1 ? 1 : *s2 ? -1 : 0; 517} 518#endif 519 520/* 521 * Set the S_CREATOR_OS field. Return true if OS is known, 522 * otherwise, 0. 523 */ 524static int set_os(struct ext2_super_block *sb, char *os) 525{ 526 if (isdigit (*os)) 527 sb->s_creator_os = atoi (os); 528 else if (strcasecmp(os, "linux") == 0) 529 sb->s_creator_os = EXT2_OS_LINUX; 530 else if (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0) 531 sb->s_creator_os = EXT2_OS_HURD; 532 else if (strcasecmp(os, "masix") == 0) 533 sb->s_creator_os = EXT2_OS_MASIX; 534 else 535 return 0; 536 return 1; 537} 538 539#define PATH_SET "PATH=/sbin" 540 541static parse_raid_opts(const char *opts) 542{ 543 char *buf, *token, *next, *p, *arg; 544 int len; 545 int raid_usage = 0; 546 547 len = strlen(opts); 548 buf = malloc(len+1); 549 if (!buf) { 550 fprintf(stderr, "Couldn't allocate memory to parse " 551 "raid options!\n"); 552 exit(1); 553 } 554 strcpy(buf, opts); 555 for (token = buf; token && *token; token = next) { 556 p = strchr(token, ','); 557 next = 0; 558 if (p) { 559 *p = 0; 560 next = p+1; 561 } 562 arg = strchr(token, '='); 563 if (arg) { 564 *arg = 0; 565 arg++; 566 } 567 if (strcmp(token, "stride") == 0) { 568 if (!arg) { 569 raid_usage++; 570 continue; 571 } 572 fs_stride = strtoul(arg, &p, 0); 573 if (*p || (fs_stride == 0)) { 574 fprintf(stderr, "Invalid stride parameter.\n"); 575 raid_usage++; 576 continue; 577 } 578 } else 579 raid_usage++; 580 } 581 if (raid_usage) { 582 fprintf(stderr, "\nBad raid options specified.\n\n" 583 "Raid options are separated by commas, " 584 "and may take an argument which\n" 585 "\tis set off by an equals ('=') sign.\n\n" 586 "Valid raid options are:\n" 587 "\tstride=<stride length in blocks>\n\n"); 588 exit(1); 589 } 590} 591 592 593 594static void PRS(int argc, char *argv[]) 595{ 596 char c; 597 int size; 598 char * tmp; 599 blk_t max = 8192; 600 int inode_ratio = 4096; 601 int reserved_ratio = 5; 602 errcode_t retval; 603 int sparse_option = -1; 604 char *oldpath = getenv("PATH"); 605 struct ext2fs_sb *param_ext2 = (struct ext2fs_sb *) ¶m; 606 char *raid_opts = 0; 607 608 /* Update our PATH to include /sbin */ 609 if (oldpath) { 610 char *newpath; 611 612 newpath = malloc(sizeof (PATH_SET) + 1 + strlen (oldpath)); 613 strcpy (newpath, PATH_SET); 614 strcat (newpath, ":"); 615 strcat (newpath, oldpath); 616 putenv (newpath); 617 } else 618 putenv (PATH_SET); 619 620 setbuf(stdout, NULL); 621 setbuf(stderr, NULL); 622 initialize_ext2_error_table(); 623 memset(¶m, 0, sizeof(struct ext2_super_block)); 624 625 fprintf (stderr, "mke2fs %s, %s for EXT2 FS %s, %s\n", 626 E2FSPROGS_VERSION, E2FSPROGS_DATE, 627 EXT2FS_VERSION, EXT2FS_DATE); 628 if (argc && *argv) 629 program_name = *argv; 630 while ((c = getopt (argc, argv, 631 "b:cf:g:i:l:m:o:qr:R:s:tvI:SFL:M:")) != EOF) 632 switch (c) { 633 case 'b': 634 size = strtoul(optarg, &tmp, 0); 635 if (size < 1024 || size > 4096 || *tmp) { 636 com_err(program_name, 0, "bad block size - %s", 637 optarg); 638 exit(1); 639 } 640 param.s_log_block_size = 641 log2(size >> EXT2_MIN_BLOCK_LOG_SIZE); 642 max = size * 8; 643 break; 644 case 'c': 645 case 't': /* Check for bad blocks */ 646 cflag = 1; 647 break; 648 case 'f': 649 size = strtoul(optarg, &tmp, 0); 650 if (size < 1024 || size > 4096 || *tmp) { 651 com_err(program_name, 0, "bad fragment size - %s", 652 optarg); 653 exit(1); 654 } 655 param.s_log_frag_size = 656 log2(size >> EXT2_MIN_BLOCK_LOG_SIZE); 657 printf("Warning: fragments not supported. " 658 "Ignoring -f option\n"); 659 break; 660 case 'g': 661 param.s_blocks_per_group = strtoul(optarg, &tmp, 0); 662 if (*tmp) { 663 com_err(program_name, 0, 664 "Illegal number for blocks per group"); 665 exit(1); 666 } 667 if ((param.s_blocks_per_group % 8) != 0) { 668 com_err(program_name, 0, 669 "blocks per group must be multiple of 8"); 670 exit(1); 671 } 672 break; 673 case 'i': 674 inode_ratio = strtoul(optarg, &tmp, 0); 675 if (inode_ratio < 1024 || inode_ratio > 256 * 1024 || 676 *tmp) { 677 com_err(program_name, 0, "bad inode ratio - %s", 678 optarg); 679 exit(1); 680 } 681 break; 682 case 'l': 683 bad_blocks_filename = malloc(strlen(optarg)+1); 684 if (!bad_blocks_filename) { 685 com_err(program_name, ENOMEM, 686 "in malloc for bad_blocks_filename"); 687 exit(1); 688 } 689 strcpy(bad_blocks_filename, optarg); 690 break; 691 case 'm': 692 reserved_ratio = strtoul(optarg, &tmp, 0); 693 if (reserved_ratio > 50 || *tmp) { 694 com_err(program_name, 0, 695 "bad reserved blocks percent - %s", 696 optarg); 697 exit(1); 698 } 699 break; 700 case 'o': 701 creator_os = optarg; 702 break; 703 case 'r': 704 param.s_rev_level = atoi(optarg); 705 break; 706 case 's': 707 sparse_option = atoi(optarg); 708 break; 709#ifdef EXT2_DYNAMIC_REV 710 case 'I': 711 param.s_inode_size = atoi(optarg); 712 break; 713#endif 714 case 'v': 715 verbose = 1; 716 break; 717 case 'q': 718 quiet = 1; 719 break; 720 case 'F': 721 force = 1; 722 break; 723 case 'L': 724 volume_label = optarg; 725 break; 726 case 'M': 727 mount_dir = optarg; 728 break; 729 case 'R': 730 raid_opts = optarg; 731 break; 732 case 'S': 733 super_only = 1; 734 break; 735 default: 736 usage(); 737 } 738 if (optind == argc) 739 usage(); 740 device_name = argv[optind]; 741 optind++; 742 if (optind < argc) { 743 param.s_blocks_count = strtoul(argv[optind++], &tmp, 0); 744 if (*tmp) { 745 com_err(program_name, 0, "bad blocks count - %s", 746 argv[optind - 1]); 747 exit(1); 748 } 749 } 750 if (optind < argc) 751 usage(); 752 753 if (raid_opts) 754 parse_raid_opts(raid_opts); 755 756 if (!force) 757 check_plausibility(); 758 check_mount(); 759 760 param.s_log_frag_size = param.s_log_block_size; 761 762 if (!param.s_blocks_count) { 763 retval = ext2fs_get_device_size(device_name, 764 EXT2_BLOCK_SIZE(¶m), 765 ¶m.s_blocks_count); 766 if (retval) { 767 com_err(program_name, retval, 768 "while trying to determine filesystem size"); 769 exit(1); 770 } 771 } 772 773 if (param.s_blocks_per_group) { 774 if (param.s_blocks_per_group < 256 || 775 param.s_blocks_per_group > max || *tmp) { 776 com_err(program_name, 0, 777 "blocks per group count out of range"); 778 exit(1); 779 } 780 } 781 782 /* 783 * Calculate number of inodes based on the inode ratio 784 */ 785 param.s_inodes_count = 786 ((long long) param.s_blocks_count * EXT2_BLOCK_SIZE(¶m)) 787 / inode_ratio; 788 789 /* 790 * Calculate number of blocks to reserve 791 */ 792 param.s_r_blocks_count = (param.s_blocks_count * reserved_ratio) / 100; 793 794 /* 795 * If we are using revision #1, use the sparse super feature 796 * by default 797 */ 798#ifdef EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 799 if ((sparse_option == 1) 800#ifdef EXT2_DYNAMIC_REV 801 || (param.s_rev_level >= EXT2_DYNAMIC_REV) && (!sparse_option) 802#endif 803 ) 804 param_ext2->s_feature_ro_compat |= 805 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; 806#endif 807} 808 809int main (int argc, char *argv[]) 810{ 811 errcode_t retval = 0; 812 ext2_filsys fs; 813 badblocks_list bb_list = 0; 814 struct ext2fs_sb *s; 815 816 PRS(argc, argv); 817 818 /* 819 * Initialize the superblock.... 820 */ 821 retval = ext2fs_initialize(device_name, 0, ¶m, 822 unix_io_manager, &fs); 823 if (retval) { 824 com_err(device_name, retval, "while setting up superblock"); 825 exit(1); 826 } 827 828 /* 829 * Generate a UUID for it... 830 */ 831 s = (struct ext2fs_sb *) fs->super; 832 uuid_generate(s->s_uuid); 833 834 /* 835 * Override the creator OS, if applicable 836 */ 837 if (creator_os && !set_os(fs->super, creator_os)) { 838 com_err (program_name, 0, "unknown os - %s", creator_os); 839 exit(1); 840 } 841 842 /* 843 * Set the volume label... 844 */ 845 if (volume_label) { 846 memset(s->s_volume_name, 0, sizeof(s->s_volume_name)); 847 strncpy(s->s_volume_name, volume_label, 848 sizeof(s->s_volume_name)); 849 } 850 851 /* 852 * Set the last mount directory 853 */ 854 if (mount_dir) { 855 memset(s->s_last_mounted, 0, sizeof(s->s_last_mounted)); 856 strncpy(s->s_last_mounted, mount_dir, 857 sizeof(s->s_last_mounted)); 858 } 859 860 if (!quiet) 861 show_stats(fs); 862 863 if (bad_blocks_filename) 864 read_bb_file(fs, &bb_list, bad_blocks_filename); 865 if (cflag) 866 test_disk(fs, &bb_list); 867 868 handle_bad_blocks(fs, bb_list); 869 fs->stride = fs_stride; 870 retval = ext2fs_allocate_tables(fs); 871 if (retval) { 872 com_err(program_name, retval, 873 "while trying to allocate filesystem tables"); 874 exit(1); 875 } 876 if (super_only) { 877 fs->super->s_state |= EXT2_ERROR_FS; 878 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY); 879 } else { 880 write_inode_tables(fs); 881 create_root_dir(fs); 882 create_lost_and_found(fs); 883 reserve_inodes(fs); 884 create_bad_block_inode(fs, bb_list); 885#ifdef ZAP_BOOTBLOCK 886 zap_bootblock(fs); 887#endif 888 } 889 890 if (!quiet) 891 printf("Writing superblocks and " 892 "filesystem accounting information: "); 893 ext2fs_close(fs); 894 if (!quiet) 895 printf("done\n"); 896 return 0; 897} 898