misc/mke2fs.c

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