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 __u32   fs_stride = 0;
  78
  79 struct ext2_super_block param;
  80 char *creator_os = NULL;
  81 char *volume_label = NULL;
  82 char *mount_dir = NULL;
  83
  84 static 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
  96 static 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
 108 static 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
 144 static 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  */
 167 static 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  */
 176 static 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  */
 200 static 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
 226 static 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
 298 static 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
 340 static 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
 369 static 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
 398 static 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
 414 static 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
 429 static 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
 444 static 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 = 6;
 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
 505 static 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  */
 524 static 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
 541 static void 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
 594 static void PRS(int argc, char *argv[])
 595 {
 596         int     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 *) &param;
 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(&param, 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(&param),
 765                                                 &param.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(&param))
 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
 809 int 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, &param,
 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 }