misc/mke2fs.c

   1 /*
   2  * mke2fs.c - Make a ext2fs filesystem.
   3  *
   4  * Copyright (C) 1994 Theodore Ts'o.  This file may be redistributed
   5  * under the terms of the GNU Public License.
   6  */
   7
   8 /* Usage: mke2fs [options] device
   9  *
  10  * The device may be a block device or a image of one, but this isn't
  11  * enforced (but it's not much fun on a character device :-).
  12  */
  13
  14 #include <stdio.h>
  15 #include <string.h>
  16 #include <fcntl.h>
  17 #include <ctype.h>
  18 #include <termios.h>
  19 #include <time.h>
  20 #ifdef HAVE_GETOPT_H
  21 #include <getopt.h>
  22 #endif
  23 #ifdef HAVE_UNISTD_H
  24 #include <unistd.h>
  25 #endif
  26 #ifdef HAVE_STDLIB_H
  27 #include <stdlib.h>
  28 #endif
  29 #ifdef HAVE_ERRNO_H
  30 #include <errno.h>
  31 #endif
  32 #ifdef HAVE_MNTENT_H
  33 #include <mntent.h>
  34 #endif
  35 #include <malloc.h>
  36 #include <sys/ioctl.h>
  37 #include <sys/types.h>
  38 #include <sys/stat.h>
  39 #include <stdio.h>
  40
  41 #ifdef HAVE_LINUX_FS_H
  42 #include <linux/fs.h>
  43 #endif
  44 #include <linux/ext2_fs.h>
  45 #ifdef HAVE_LINUX_MAJOR_H
  46 #include <linux/major.h>
  47 #endif
  48
  49 #include "et/com_err.h"
  50 #include "uuid/uuid.h"
  51 #include "ext2fs/ext2fs.h"
  52 #include "../version.h"
  53
  54 #define STRIDE_LENGTH 8
  55
  56 #ifndef sparc
  57 #define ZAP_BOOTBLOCK
  58 #endif
  59
  60 extern int isatty(int);
  61 extern FILE *fpopen(const char *cmd, const char *mode);
  62
  63 const char * program_name = "mke2fs";
  64 const char * device_name = NULL;
  65
  66 /* Command line options */
  67 int     cflag = 0;
  68 int     verbose = 0;
  69 int     quiet = 0;
  70 int     super_only = 0;
  71 int     force = 0;
  72 char    *bad_blocks_filename = 0;
  73
  74 struct ext2_super_block param;
  75 char *creator_os = NULL;
  76 char *volume_label = NULL;
  77 char *mount_dir = NULL;
  78
  79 static void usage(NOARGS)
  80 {
  81         fprintf(stderr, "Usage: %s [-c|-t|-l filename] [-b block-size] "
  82         "[-f fragment-size]\n\t[-i bytes-per-inode] "
  83         "[-m reserved-blocks-percentage] [-qvS]\n\t"
  84         "[-o creator-os] [-g blocks-per-group] [-L volume-label]\n\t"
  85         "[-M last-mounted-directory] device [blocks-count]\n",
  86                 program_name);
  87         exit(1);
  88 }
  89
  90 static int log2(int arg)
  91 {
  92         int     l = 0;
  93
  94         arg >>= 1;
  95         while (arg) {
  96                 l++;
  97                 arg >>= 1;
  98         }
  99         return l;
 100 }
 101
 102 static void check_plausibility(NOARGS)
 103 {
 104 #ifdef HAVE_LINUX_MAJOR_H
 105         int val;
 106         struct stat s;
 107
 108         val = stat(device_name, &s);
 109
 110         if(val == -1) {
 111                 perror("stat");
 112                 exit(1);
 113         }
 114         if(!S_ISBLK(s.st_mode)) {
 115                 printf("%s is not a block special device.\n", device_name);
 116                 printf("Proceed anyway? (y,n) ");
 117                 if (getchar() != 'y')
 118                         exit(1);
 119                 return;
 120         }
 121         if ((MAJOR(s.st_rdev) == HD_MAJOR && MINOR(s.st_rdev)%64 == 0) ||
 122             (MAJOR(s.st_rdev) == SCSI_DISK_MAJOR &&
 123              MINOR(s.st_rdev)%16 == 0)) {
 124                 printf("%s is entire device, not just one partition!\n",
 125                        device_name);
 126                 printf("Proceed anyway? (y,n) ");
 127                 if (getchar() != 'y')
 128                         exit(1);
 129                 return;
 130         }
 131 #endif
 132 }
 133
 134 static void check_mount(NOARGS)
 135 {
 136         errcode_t       retval;
 137         int             mount_flags;
 138
 139         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
 140         if (retval) {
 141                 com_err("ext2fs_check_if_mount", retval,
 142                         "while determining whether %s is mounted.",
 143                         device_name);
 144                 return;
 145         }
 146         if (!(mount_flags & EXT2_MF_MOUNTED))
 147                 return;
 148
 149         fprintf(stderr, "%s is mounted; will not make a filesystem here!\n",
 150                 device_name);
 151         exit(1);
 152 }
 153
 154 /*
 155  * Helper function for read_bb_file and test_disk
 156  */
 157 static void invalid_block(ext2_filsys fs, blk_t blk)
 158 {
 159         printf("Bad block %u out of range; ignored.\n", blk);
 160         return;
 161 }
 162
 163 /*
 164  * Reads the bad blocks list from a file
 165  */
 166 static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list,
 167                          const char *bad_blocks_file)
 168 {
 169         FILE            *f;
 170         errcode_t       retval;
 171
 172         f = fopen(bad_blocks_file, "r");
 173         if (!f) {
 174                 com_err("read_bad_blocks_file", errno,
 175                         "while trying to open %s", bad_blocks_file);
 176                 exit(1);
 177         }
 178         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 179         fclose (f);
 180         if (retval) {
 181                 com_err("ext2fs_read_bb_FILE", retval,
 182                         "while reading in list of bad blocks from file");
 183                 exit(1);
 184         }
 185 }
 186
 187 /*
 188  * Runs the badblocks program to test the disk
 189  */
 190 static void test_disk(ext2_filsys fs, badblocks_list *bb_list)
 191 {
 192         FILE            *f;
 193         errcode_t       retval;
 194         char            buf[1024];
 195
 196         sprintf(buf, "badblocks %s%s %d", quiet ? "" : "-s ",
 197                 fs->device_name,
 198                 fs->super->s_blocks_count);
 199         if (verbose)
 200                 printf("Running command: %s\n", buf);
 201         f = popen(buf, "r");
 202         if (!f) {
 203                 com_err("popen", errno,
 204                         "while trying run '%s'", buf);
 205                 exit(1);
 206         }
 207         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 208         pclose(f);
 209         if (retval) {
 210                 com_err("ext2fs_read_bb_FILE", retval,
 211                         "while processing list of bad blocks from program");
 212                 exit(1);
 213         }
 214 }
 215
 216 static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list)
 217 {
 218         int                     i, j;
 219         int                     must_be_good;
 220         blk_t                   blk;
 221         badblocks_iterate       bb_iter;
 222         errcode_t               retval;
 223         blk_t                   group_block;
 224         int                     group;
 225         int                     group_bad;
 226
 227         if (!bb_list)
 228                 return;
 229
 230         /*
 231          * The primary superblock and group descriptors *must* be
 232          * good; if not, abort.
 233          */
 234         must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks;
 235         for (i = fs->super->s_first_data_block; i <= must_be_good; i++) {
 236                 if (badblocks_list_test(bb_list, i)) {
 237                         fprintf(stderr, "Block %d in primary superblock/group "
 238                                 "descriptor area bad.\n", i);
 239                         fprintf(stderr, "Blocks %d through %d must be good "
 240                                 "in order to build a filesystem.\n",
 241                                 fs->super->s_first_data_block, must_be_good);
 242                         fprintf(stderr, "Aborting....\n");
 243                         exit(1);
 244                 }
 245         }
 246
 247         /*
 248          * See if any of the bad blocks are showing up in the backup
 249          * superblocks and/or group descriptors.  If so, issue a
 250          * warning and adjust the block counts appropriately.
 251          */
 252         group_block = fs->super->s_first_data_block +
 253                 fs->super->s_blocks_per_group;
 254         group_bad = 0;
 255
 256         for (i = 1; i < fs->group_desc_count; i++) {
 257                 for (j=0; j < fs->desc_blocks+1; j++) {
 258                         if (badblocks_list_test(bb_list, group_block +
 259                                                 j)) {
 260                                 if (!group_bad)
 261                                         fprintf(stderr,
 262 "Warning: the backup superblock/group descriptors at block %d contain\n"
 263 "       bad blocks.\n\n",
 264                                                 group_block);
 265                                 group_bad++;
 266                                 group = ext2fs_group_of_blk(fs, group_block+j);
 267                                 fs->group_desc[group].bg_free_blocks_count++;
 268                                 fs->super->s_free_blocks_count++;
 269                         }
 270                 }
 271                 group_block += fs->super->s_blocks_per_group;
 272         }
 273
 274         /*
 275          * Mark all the bad blocks as used...
 276          */
 277         retval = badblocks_list_iterate_begin(bb_list, &bb_iter);
 278         if (retval) {
 279                 com_err("badblocks_list_iterate_begin", retval,
 280                         "while marking bad blocks as used");
 281                 exit(1);
 282         }
 283         while (badblocks_list_iterate(bb_iter, &blk))
 284                 ext2fs_mark_block_bitmap(fs->block_map, blk);
 285         badblocks_list_iterate_end(bb_iter);
 286 }
 287
 288 static void new_table_block(ext2_filsys fs, blk_t first_block,
 289                             const char *name, int num, int initialize,
 290                             const char *buf, blk_t *new_block)
 291 {
 292         errcode_t       retval;
 293         blk_t           blk;
 294         int             i;
 295         int             count;
 296
 297         retval = ext2fs_get_free_blocks(fs, first_block,
 298                         first_block + fs->super->s_blocks_per_group,
 299                                         num, fs->block_map, new_block);
 300         if (retval) {
 301                 printf("Could not allocate %d block(s) for %s: %s\n",
 302                        num, name, error_message(retval));
 303                 ext2fs_unmark_valid(fs);
 304                 return;
 305         }
 306         if (initialize) {
 307                 blk = *new_block;
 308                 for (i=0; i < num; i += STRIDE_LENGTH, blk += STRIDE_LENGTH) {
 309                         if (num-i > STRIDE_LENGTH)
 310                                 count = STRIDE_LENGTH;
 311                         else
 312                                 count = num - i;
 313                         retval = io_channel_write_blk(fs->io, blk, count, buf);
 314                         if (retval)
 315                                 printf("Warning: could not write %d blocks "
 316                                        "starting at %d for %s: %s\n",
 317                                        count, blk, name,
 318                                        error_message(retval));
 319                 }
 320         }
 321         blk = *new_block;
 322         for (i = 0; i < num; i++, blk++)
 323                 ext2fs_mark_block_bitmap(fs->block_map, blk);
 324 }
 325
 326 static void alloc_tables(ext2_filsys fs)
 327 {
 328         blk_t   group_blk;
 329         int     i;
 330         char    *buf;
 331
 332         buf = malloc(fs->blocksize * STRIDE_LENGTH);
 333         if (!buf) {
 334                 com_err("malloc", ENOMEM, "while allocating zeroizing buffer");
 335                 exit(1);
 336         }
 337         memset(buf, 0, fs->blocksize * STRIDE_LENGTH);
 338
 339         group_blk = fs->super->s_first_data_block;
 340         if (!quiet)
 341                 printf("Writing inode tables: ");
 342         for (i = 0; i < fs->group_desc_count; i++) {
 343                 if (!quiet)
 344                         printf("%4d/%4ld", i, fs->group_desc_count);
 345                 new_table_block(fs, group_blk, "block bitmap", 1, 0, buf,
 346                                 &fs->group_desc[i].bg_block_bitmap);
 347                 new_table_block(fs, group_blk, "inode bitmap", 1, 0, buf,
 348                                 &fs->group_desc[i].bg_inode_bitmap);
 349                 new_table_block(fs, group_blk, "inode table",
 350                                 fs->inode_blocks_per_group,
 351                                 !super_only, buf,
 352                                 &fs->group_desc[i].bg_inode_table);
 353
 354                 group_blk += fs->super->s_blocks_per_group;
 355                 if (!quiet)
 356                         printf("\b\b\b\b\b\b\b\b\b");
 357         }
 358         if (!quiet)
 359                 printf("done     \n");
 360 }
 361
 362 static void create_root_dir(ext2_filsys fs)
 363 {
 364         errcode_t       retval;
 365         struct ext2_inode       inode;
 366
 367         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0);
 368         if (retval) {
 369                 com_err("ext2fs_mkdir", retval, "while creating root dir");
 370                 exit(1);
 371         }
 372         if (geteuid()) {
 373                 retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode);
 374                 if (retval) {
 375                         com_err("ext2fs_read_inode", retval,
 376                                 "while reading root inode");
 377                         exit(1);
 378                 }
 379                 inode.i_uid = geteuid();
 380                 retval = ext2fs_write_inode(fs, EXT2_ROOT_INO, &inode);
 381                 if (retval) {
 382                         com_err("ext2fs_write_inode", retval,
 383                                 "while setting root inode ownership");
 384                         exit(1);
 385                 }
 386         }
 387 }
 388
 389 static void create_lost_and_found(ext2_filsys fs)
 390 {
 391         errcode_t               retval;
 392         ino_t                   ino;
 393         const char              *name = "lost+found";
 394         int                     i;
 395
 396         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name);
 397         if (retval) {
 398                 com_err("ext2fs_mkdir", retval, "while creating /lost+found");
 399                 exit(1);
 400         }
 401
 402         retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
 403         if (retval) {
 404                 com_err("ext2_lookup", retval, "while looking up /lost+found");
 405                 exit(1);
 406         }
 407
 408         for (i=1; i < EXT2_NDIR_BLOCKS; i++) {
 409                 retval = ext2fs_expand_dir(fs, ino);
 410                 if (retval) {
 411                         com_err("ext2fs_expand_dir", retval,
 412                                 "while expanding /lost+found");
 413                         exit(1);
 414                 }
 415         }
 416 }
 417
 418 static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list)
 419 {
 420         errcode_t       retval;
 421
 422         ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO);
 423         fs->group_desc[0].bg_free_inodes_count--;
 424         fs->super->s_free_inodes_count--;
 425         retval = ext2fs_update_bb_inode(fs, bb_list);
 426         if (retval) {
 427                 com_err("ext2fs_update_bb_inode", retval,
 428                         "while setting bad block inode");
 429                 exit(1);
 430         }
 431
 432 }
 433
 434 static void reserve_inodes(ext2_filsys fs)
 435 {
 436         ino_t   i;
 437         int     group;
 438
 439         for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++) {
 440                 ext2fs_mark_inode_bitmap(fs->inode_map, i);
 441                 group = ext2fs_group_of_ino(fs, i);
 442                 fs->group_desc[group].bg_free_inodes_count--;
 443                 fs->super->s_free_inodes_count--;
 444         }
 445         ext2fs_mark_ib_dirty(fs);
 446 }
 447
 448 #ifdef ZAP_BOOTBLOCK
 449 static void zap_bootblock(ext2_filsys fs)
 450 {
 451         char buf[512];
 452         int retval;
 453
 454         memset(buf, 0, 512);
 455
 456         retval = io_channel_write_blk(fs->io, 0, -512, buf);
 457         if (retval)
 458                 printf("Warning: could not erase block 0: %s\n",
 459                        error_message(retval));
 460 }
 461 #endif
 462
 463
 464 static void show_stats(ext2_filsys fs)
 465 {
 466         struct ext2fs_sb        *s = (struct ext2fs_sb *) fs->super;
 467         char                    buf[80];
 468         blk_t                   group_block;
 469         int                     i, col_left;
 470
 471         if (param.s_blocks_count != s->s_blocks_count)
 472                 printf("warning: %d blocks unused.\n\n",
 473                        param.s_blocks_count - s->s_blocks_count);
 474
 475         switch (fs->super->s_creator_os) {
 476             case EXT2_OS_LINUX: printf ("Linux"); break;
 477             case EXT2_OS_HURD:  printf ("GNU/hurd");   break;
 478             case EXT2_OS_MASIX: printf ("Masix"); break;
 479             default:            printf ("(unknown os)");
 480         }
 481         printf (" ext2 filesystem format\n");
 482         memset(buf, 0, sizeof(buf));
 483         strncpy(buf, s->s_volume_name, sizeof(s->s_volume_name));
 484         printf("Filesystem label=%s\n", buf);
 485         printf("%u inodes, %u blocks\n", s->s_inodes_count,
 486                s->s_blocks_count);
 487         printf("%u blocks (%2.2f%%) reserved for the super user\n",
 488                 s->s_r_blocks_count,
 489                100.0 * s->s_r_blocks_count / s->s_blocks_count);
 490         printf("First data block=%u\n", s->s_first_data_block);
 491         printf("Block size=%u (log=%u)\n", fs->blocksize,
 492                 s->s_log_block_size);
 493         printf("Fragment size=%u (log=%u)\n", fs->fragsize,
 494                 s->s_log_frag_size);
 495         printf("%lu block group%s\n", fs->group_desc_count,
 496                 (fs->group_desc_count > 1) ? "s" : "");
 497         printf("%u blocks per group, %u fragments per group\n",
 498                s->s_blocks_per_group, s->s_frags_per_group);
 499         printf("%u inodes per group\n", s->s_inodes_per_group);
 500
 501         if (fs->group_desc_count == 1) {
 502                 printf("\n");
 503                 return;
 504         }
 505
 506         printf("Superblock backups stored on blocks: ");
 507         group_block = s->s_first_data_block;
 508         col_left = 0;
 509         for (i = 1; i < fs->group_desc_count; i++) {
 510                 group_block += s->s_blocks_per_group;
 511                 if (!col_left--) {
 512                         printf("\n\t");
 513                         col_left = 8;
 514                 }
 515                 printf("%u", group_block);
 516                 if (i != fs->group_desc_count - 1)
 517                         printf(", ");
 518         }
 519         printf("\n\n");
 520 }
 521
 522 #ifndef HAVE_STRCASECMP
 523 static int strcasecmp (char *s1, char *s2)
 524 {
 525         while (*s1 && *s2) {
 526                 int ch1 = *s1++, ch2 = *s2++;
 527                 if (isupper (ch1))
 528                         ch1 = tolower (ch1);
 529                 if (isupper (ch2))
 530                         ch2 = tolower (ch2);
 531                 if (ch1 != ch2)
 532                         return ch1 - ch2;
 533         }
 534         return *s1 ? 1 : *s2 ? -1 : 0;
 535 }
 536 #endif
 537
 538 /*
 539  * Set the S_CREATOR_OS field.  Return true if OS is known,
 540  * otherwise, 0.
 541  */
 542 static int set_os(struct ext2_super_block *sb, char *os)
 543 {
 544         if (isdigit (*os))
 545                 sb->s_creator_os = atoi (os);
 546         else if (strcasecmp(os, "linux") == 0)
 547                 sb->s_creator_os = EXT2_OS_LINUX;
 548         else if (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0)
 549                 sb->s_creator_os = EXT2_OS_HURD;
 550         else if (strcasecmp(os, "masix") == 0)
 551                 sb->s_creator_os = EXT2_OS_MASIX;
 552         else
 553                 return 0;
 554         return 1;
 555 }
 556
 557 #define PATH_SET "PATH=/sbin"
 558
 559 static void PRS(int argc, char *argv[])
 560 {
 561         char    c;
 562         int     size;
 563         char    * tmp;
 564         int     inode_ratio = 4096;
 565         int     reserved_ratio = 5;
 566         errcode_t       retval;
 567         char    *oldpath = getenv("PATH");
 568
 569         /* Update our PATH to include /sbin  */
 570         if (oldpath) {
 571                 char *newpath;
 572
 573                 newpath = malloc(sizeof (PATH_SET) + 1 + strlen (oldpath));
 574                 strcpy (newpath, PATH_SET);
 575                 strcat (newpath, ":");
 576                 strcat (newpath, oldpath);
 577                 putenv (newpath);
 578         } else
 579                 putenv (PATH_SET);
 580
 581         setbuf(stdout, NULL);
 582         setbuf(stderr, NULL);
 583         initialize_ext2_error_table();
 584         memset(&param, 0, sizeof(struct ext2_super_block));
 585
 586         fprintf (stderr, "mke2fs %s, %s for EXT2 FS %s, %s\n",
 587                  E2FSPROGS_VERSION, E2FSPROGS_DATE,
 588                  EXT2FS_VERSION, EXT2FS_DATE);
 589         if (argc && *argv)
 590                 program_name = *argv;
 591         while ((c = getopt (argc, argv,
 592                             "b:cf:g:i:l:m:o:qr:tvI:SFL:M:")) != EOF)
 593                 switch (c) {
 594                 case 'b':
 595                         size = strtoul(optarg, &tmp, 0);
 596                         if (size < 1024 || size > 4096 || *tmp) {
 597                                 com_err(program_name, 0, "bad block size - %s",
 598                                         optarg);
 599                                 exit(1);
 600                         }
 601                         param.s_log_block_size =
 602                                 log2(size >> EXT2_MIN_BLOCK_LOG_SIZE);
 603                         break;
 604                 case 'c':
 605                 case 't':       /* Check for bad blocks */
 606                         cflag = 1;
 607                         break;
 608                 case 'f':
 609                         size = strtoul(optarg, &tmp, 0);
 610                         if (size < 1024 || size > 4096 || *tmp) {
 611                                 com_err(program_name, 0, "bad fragment size - %s",
 612                                         optarg);
 613                                 exit(1);
 614                         }
 615                         param.s_log_frag_size =
 616                                 log2(size >> EXT2_MIN_BLOCK_LOG_SIZE);
 617                         printf("Warning: fragments not supported.  "
 618                                "Ignoring -f option\n");
 619                         break;
 620                 case 'g':
 621                         param.s_blocks_per_group = strtoul(optarg, &tmp, 0);
 622                         if (*tmp) {
 623                                 com_err(program_name, 0,
 624                                         "Illegal number for blocks per group");
 625                                 exit(1);
 626                         }
 627                         if (param.s_blocks_per_group < 256 ||
 628                             param.s_blocks_per_group > 8192 || *tmp) {
 629                                 com_err(program_name, 0,
 630                                         "blocks per group count out of range");
 631                                 exit(1);
 632                         }
 633                         if ((param.s_blocks_per_group % 8) != 0) {
 634                                 com_err(program_name, 0,
 635                                 "blocks per group must be multiple of 8");
 636                                 exit(1);
 637                         }
 638                         break;
 639                 case 'i':
 640                         inode_ratio = strtoul(optarg, &tmp, 0);
 641                         if (inode_ratio < 1024 || inode_ratio > 256 * 1024 ||
 642                             *tmp) {
 643                                 com_err(program_name, 0, "bad inode ratio - %s",
 644                                         optarg);
 645                                 exit(1);
 646                         }
 647                         break;
 648                 case 'l':
 649                         bad_blocks_filename = malloc(strlen(optarg)+1);
 650                         if (!bad_blocks_filename) {
 651                                 com_err(program_name, ENOMEM,
 652                                         "in malloc for bad_blocks_filename");
 653                                 exit(1);
 654                         }
 655                         strcpy(bad_blocks_filename, optarg);
 656                         break;
 657                 case 'm':
 658                         reserved_ratio = strtoul(optarg, &tmp, 0);
 659                         if (reserved_ratio > 50 || *tmp) {
 660                                 com_err(program_name, 0,
 661                                         "bad reserved blocks percent - %s",
 662                                         optarg);
 663                                 exit(1);
 664                         }
 665                         break;
 666                 case 'o':
 667                         creator_os = optarg;
 668                         break;
 669                 case 'r':
 670                         param.s_rev_level = atoi(optarg);
 671                         break;
 672 #ifdef EXT2_DYNAMIC_REV
 673                 case 'I':
 674                         param.s_inode_size = atoi(optarg);
 675                         break;
 676 #endif
 677                 case 'v':
 678                         verbose = 1;
 679                         break;
 680                 case 'q':
 681                         quiet = 1;
 682                         break;
 683                 case 'F':
 684                         force = 1;
 685                         break;
 686                 case 'L':
 687                         volume_label = optarg;
 688                         break;
 689                 case 'M':
 690                         mount_dir = optarg;
 691                         break;
 692                 case 'S':
 693                         super_only = 1;
 694                         break;
 695                 default:
 696                         usage();
 697                 }
 698         if (optind == argc)
 699                 usage();
 700         device_name = argv[optind];
 701         optind++;
 702         if (optind < argc) {
 703                 param.s_blocks_count = strtoul(argv[optind++], &tmp, 0);
 704                 if (*tmp) {
 705                         com_err(program_name, 0, "bad blocks count - %s",
 706                                 argv[optind - 1]);
 707                         exit(1);
 708                 }
 709         }
 710         if (optind < argc)
 711                 usage();
 712
 713         if (!force)
 714                 check_plausibility();
 715         check_mount();
 716
 717         param.s_log_frag_size = param.s_log_block_size;
 718
 719         if (!param.s_blocks_count) {
 720                 retval = ext2fs_get_device_size(device_name,
 721                                                 EXT2_BLOCK_SIZE(&param),
 722                                                 &param.s_blocks_count);
 723                 if (retval) {
 724                         com_err(program_name, retval,
 725                                 "while trying to determine filesystem size");
 726                         exit(1);
 727                 }
 728         }
 729
 730         /*
 731          * Calculate number of inodes based on the inode ratio
 732          */
 733         param.s_inodes_count =
 734                 ((long long) param.s_blocks_count * EXT2_BLOCK_SIZE(&param))
 735                         / inode_ratio;
 736
 737         /*
 738          * Calculate number of blocks to reserve
 739          */
 740         param.s_r_blocks_count = (param.s_blocks_count * reserved_ratio) / 100;
 741 }
 742
 743 int main (int argc, char *argv[])
 744 {
 745         errcode_t       retval = 0;
 746         ext2_filsys     fs;
 747         badblocks_list  bb_list = 0;
 748         struct ext2fs_sb *s;
 749
 750         PRS(argc, argv);
 751
 752         /*
 753          * Initialize the superblock....
 754          */
 755         retval = ext2fs_initialize(device_name, 0, &param,
 756                                    unix_io_manager, &fs);
 757         if (retval) {
 758                 com_err(device_name, retval, "while setting up superblock");
 759                 exit(1);
 760         }
 761
 762         /*
 763          * Generate a UUID for it...
 764          */
 765         s = (struct ext2fs_sb *) fs->super;
 766         uuid_generate(s->s_uuid);
 767
 768         /*
 769          * Override the creator OS, if applicable
 770          */
 771         if (creator_os && !set_os(fs->super, creator_os)) {
 772                 com_err (program_name, 0, "unknown os - %s", creator_os);
 773                 exit(1);
 774         }
 775
 776         /*
 777          * Set the volume label...
 778          */
 779         if (volume_label) {
 780                 memset(s->s_volume_name, 0, sizeof(s->s_volume_name));
 781                 strncpy(s->s_volume_name, volume_label,
 782                         sizeof(s->s_volume_name));
 783         }
 784
 785         /*
 786          * Set the last mount directory
 787          */
 788         if (mount_dir) {
 789                 memset(s->s_last_mounted, 0, sizeof(s->s_last_mounted));
 790                 strncpy(s->s_last_mounted, mount_dir,
 791                         sizeof(s->s_last_mounted));
 792         }
 793
 794         if (!quiet)
 795                 show_stats(fs);
 796
 797         if (bad_blocks_filename)
 798                 read_bb_file(fs, &bb_list, bad_blocks_filename);
 799         if (cflag)
 800                 test_disk(fs, &bb_list);
 801
 802         handle_bad_blocks(fs, bb_list);
 803         alloc_tables(fs);
 804         if (super_only) {
 805                 fs->super->s_state |= EXT2_ERROR_FS;
 806                 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY);
 807         } else {
 808                 create_root_dir(fs);
 809                 create_lost_and_found(fs);
 810                 reserve_inodes(fs);
 811                 create_bad_block_inode(fs, bb_list);
 812 #ifdef ZAP_BOOTBLOCK
 813                 zap_bootblock(fs);
 814 #endif
 815         }
 816
 817         if (!quiet)
 818                 printf("Writing superblocks and "
 819                        "filesystem accounting information: ");
 820         ext2fs_close(fs);
 821         if (!quiet)
 822                 printf("done\n");
 823         return 0;
 824 }