e2fsprogs/mke2fs.c

   1 /*
   2  * mke2fs.c - Make a ext2fs filesystem.
   3  *
   4  * Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
   5  *      2003, 2004, 2005 by Theodore Ts'o.
   6  *
   7  * %Begin-Header%
   8  * This file may be redistributed under the terms of the GNU Public
   9  * License.
  10  * %End-Header%
  11  */
  12
  13 /* Usage: mke2fs [options] device
  14  *
  15  * The device may be a block device or a image of one, but this isn't
  16  * enforced (but it's not much fun on a character device :-).
  17  */
  18
  19 #include <stdio.h>
  20 #include <string.h>
  21 #include <fcntl.h>
  22 #include <ctype.h>
  23 #include <time.h>
  24 #include <getopt.h>
  25 #include <unistd.h>
  26 #include <stdlib.h>
  27 #include <errno.h>
  28 #include <mntent.h>
  29 #include <sys/ioctl.h>
  30 #include <sys/types.h>
  31
  32 #include "e2fsbb.h"
  33 #include "ext2fs/ext2_fs.h"
  34 #include "uuid/uuid.h"
  35 #include "e2p/e2p.h"
  36 #include "ext2fs/ext2fs.h"
  37 #include "util.h"
  38
  39 #define STRIDE_LENGTH 8
  40
  41 #ifndef __sparc__
  42 #define ZAP_BOOTBLOCK
  43 #endif
  44
  45 static const char * device_name /* = NULL */;
  46
  47 /* Command line options */
  48 static int      cflag;
  49 static int      quiet;
  50 static int      super_only;
  51 static int      force;
  52 static int      noaction;
  53 static int      journal_size;
  54 static int      journal_flags;
  55 static const char *bad_blocks_filename;
  56 static __u32    fs_stride;
  57
  58 static struct ext2_super_block param;
  59 static char *creator_os;
  60 static char *volume_label;
  61 static char *mount_dir;
  62 static char *journal_device;
  63 static int      sync_kludge; /* Set using the MKE2FS_SYNC env. option */
  64
  65 static int sys_page_size = 4096;
  66 static int linux_version_code = 0;
  67
  68 static int int_log2(int arg)
  69 {
  70         int     l = 0;
  71
  72         arg >>= 1;
  73         while (arg) {
  74                 l++;
  75                 arg >>= 1;
  76         }
  77         return l;
  78 }
  79
  80 static int int_log10(unsigned int arg)
  81 {
  82         int     l;
  83
  84         for (l=0; arg ; l++)
  85                 arg = arg / 10;
  86         return l;
  87 }
  88
  89 /*
  90  * This function sets the default parameters for a filesystem
  91  *
  92  * The type is specified by the user.  The size is the maximum size
  93  * (in megabytes) for which a set of parameters applies, with a size
  94  * of zero meaning that it is the default parameter for the type.
  95  * Note that order is important in the table below.
  96  */
  97 #define DEF_MAX_BLOCKSIZE -1
  98 static const char default_str[] = "default";
  99 struct mke2fs_defaults {
 100         const char      *type;
 101         int             size;
 102         int             blocksize;
 103         int             inode_ratio;
 104 };
 105
 106 static const struct mke2fs_defaults settings[] = {
 107         { default_str,   0, 4096, 8192 },
 108         { default_str, 512, 1024, 4096 },
 109         { default_str,   3, 1024, 8192 },
 110         { "journal",     0, 4096, 8192 },
 111         { "news",        0, 4096, 4096 },
 112         { "largefile",   0, 4096, 1024 * 1024 },
 113         { "largefile4",  0, 4096, 4096 * 1024 },
 114         { 0,             0,    0, 0},
 115 };
 116
 117 static void set_fs_defaults(const char *fs_type,
 118                             struct ext2_super_block *super,
 119                             int blocksize, int sector_size,
 120                             int *inode_ratio)
 121 {
 122         int     megs;
 123         int     ratio = 0;
 124         const struct mke2fs_defaults *p;
 125         int     use_bsize = 1024;
 126
 127         megs = super->s_blocks_count * (EXT2_BLOCK_SIZE(super) / 1024) / 1024;
 128         if (inode_ratio)
 129                 ratio = *inode_ratio;
 130         if (!fs_type)
 131                 fs_type = default_str;
 132         for (p = settings; p->type; p++) {
 133                 if ((strcmp(p->type, fs_type) != 0) &&
 134                     (strcmp(p->type, default_str) != 0))
 135                         continue;
 136                 if ((p->size != 0) && (megs > p->size))
 137                         continue;
 138                 if (ratio == 0)
 139                         *inode_ratio = p->inode_ratio < blocksize ?
 140                                 blocksize : p->inode_ratio;
 141                 use_bsize = p->blocksize;
 142         }
 143         if (blocksize <= 0) {
 144                 if (use_bsize == DEF_MAX_BLOCKSIZE) {
 145                         use_bsize = sys_page_size;
 146                         if ((linux_version_code < (2*65536 + 6*256)) &&
 147                             (use_bsize > 4096))
 148                                 use_bsize = 4096;
 149                 }
 150                 if (sector_size && use_bsize < sector_size)
 151                         use_bsize = sector_size;
 152                 if ((blocksize < 0) && (use_bsize < (-blocksize)))
 153                         use_bsize = -blocksize;
 154                 blocksize = use_bsize;
 155                 super->s_blocks_count /= blocksize / 1024;
 156         }
 157         super->s_log_frag_size = super->s_log_block_size =
 158                 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
 159 }
 160
 161
 162 /*
 163  * Helper function for read_bb_file and test_disk
 164  */
 165 static void invalid_block(ext2_filsys fs EXT2FS_ATTR((unused)), blk_t blk)
 166 {
 167         bb_error_msg("Bad block %u out of range; ignored", 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                 bb_perror_msg_and_die("Could not read bad blocks file %s", bad_blocks_file);
 183         }
 184         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 185         fclose (f);
 186         if (retval) {
 187                 bb_error_msg_and_die("Could not read bad blocks list");
 188         }
 189 }
 190
 191 /*
 192  * Runs the badblocks program to test the disk
 193  */
 194 static void test_disk(ext2_filsys fs, badblocks_list *bb_list)
 195 {
 196         FILE            *f;
 197         errcode_t       retval;
 198         char            buf[1024];
 199
 200         sprintf(buf, "badblocks -b %d %s%s%s %d", fs->blocksize,
 201                 quiet ? "" : "-s ", (cflag > 1) ? "-w " : "",
 202                 fs->device_name, fs->super->s_blocks_count);
 203         if (!quiet)
 204                 printf("Running command: %s\n", buf);
 205         f = popen(buf, "r");
 206         if (!f) {
 207                 bb_perror_msg_and_die("Could not run '%s'", buf);
 208         }
 209         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 210         pclose(f);
 211         if (retval) {
 212                 bb_error_msg_and_die(
 213                         "Could not get list of bad blocks from program");
 214         }
 215 }
 216
 217 static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list)
 218 {
 219         dgrp_t                  i;
 220         blk_t                   j;
 221         unsigned                must_be_good;
 222         blk_t                   blk;
 223         badblocks_iterate       bb_iter;
 224         errcode_t               retval;
 225         blk_t                   group_block;
 226         int                     group;
 227         int                     group_bad;
 228
 229         if (!bb_list)
 230                 return;
 231
 232         /*
 233          * The primary superblock and group descriptors *must* be
 234          * good; if not, abort.
 235          */
 236         must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks;
 237         for (i = fs->super->s_first_data_block; i <= must_be_good; i++) {
 238                 if (ext2fs_badblocks_list_test(bb_list, i)) {
 239                         bb_error_msg_and_die(
 240                                 "Block %d in primary superblock/group descriptor area bad\n"
 241                                 "Blocks %d through %d must be good in order to build a filesystem\n"
 242                                 "Aborting ...", i, fs->super->s_first_data_block, must_be_good);
 243                 }
 244         }
 245
 246         /*
 247          * See if any of the bad blocks are showing up in the backup
 248          * superblocks and/or group descriptors.  If so, issue a
 249          * warning and adjust the block counts appropriately.
 250          */
 251         group_block = fs->super->s_first_data_block +
 252                 fs->super->s_blocks_per_group;
 253
 254         for (i = 1; i < fs->group_desc_count; i++) {
 255                 group_bad = 0;
 256                 for (j=0; j < fs->desc_blocks+1; j++) {
 257                         if (ext2fs_badblocks_list_test(bb_list,
 258                                                        group_block + j)) {
 259                                 if (!group_bad)
 260                                         bb_error_msg(
 261                                                 "Warning: the backup superblock/group descriptors at block %d contain\n"
 262                                                 "       bad blocks\n", group_block);
 263                                 group_bad++;
 264                                 group = ext2fs_group_of_blk(fs, group_block+j);
 265                                 fs->group_desc[group].bg_free_blocks_count++;
 266                                 fs->super->s_free_blocks_count++;
 267                         }
 268                 }
 269                 group_block += fs->super->s_blocks_per_group;
 270         }
 271
 272         /*
 273          * Mark all the bad blocks as used...
 274          */
 275         retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
 276         if (retval) {
 277                 bb_error_msg_and_die("while marking bad blocks as used");
 278         }
 279         while (ext2fs_badblocks_list_iterate(bb_iter, &blk))
 280                 ext2fs_mark_block_bitmap(fs->block_map, blk);
 281         ext2fs_badblocks_list_iterate_end(bb_iter);
 282 }
 283
 284 /*
 285  * These functions implement a generalized progress meter.
 286  */
 287 struct progress_struct {
 288         char            format[20];
 289         char            backup[80];
 290         __u32           max;
 291         int             skip_progress;
 292 };
 293
 294 static void progress_init(struct progress_struct *progress,
 295                           const char *label,__u32 max)
 296 {
 297         int     i;
 298
 299         memset(progress, 0, sizeof(struct progress_struct));
 300         if (quiet)
 301                 return;
 302
 303         /*
 304          * Figure out how many digits we need
 305          */
 306         i = int_log10(max);
 307         sprintf(progress->format, "%%%dd/%%%dld", i, i);
 308         memset(progress->backup, '\b', sizeof(progress->backup)-1);
 309         progress->backup[sizeof(progress->backup)-1] = 0;
 310         if ((2*i)+1 < (int) sizeof(progress->backup))
 311                 progress->backup[(2*i)+1] = 0;
 312         progress->max = max;
 313
 314         progress->skip_progress = 0;
 315         if (getenv("MKE2FS_SKIP_PROGRESS"))
 316                 progress->skip_progress++;
 317
 318         fputs(label, stdout);
 319         fflush(stdout);
 320 }
 321
 322 static void progress_update(struct progress_struct *progress, __u32 val)
 323 {
 324         if ((progress->format[0] == 0) || progress->skip_progress)
 325                 return;
 326         printf(progress->format, val, progress->max);
 327         fputs(progress->backup, stdout);
 328 }
 329
 330 static void progress_close(struct progress_struct *progress)
 331 {
 332         if (progress->format[0] == 0)
 333                 return;
 334         fputs("done                            \n", stdout);
 335 }
 336
 337
 338 /*
 339  * Helper function which zeros out _num_ blocks starting at _blk_.  In
 340  * case of an error, the details of the error is returned via _ret_blk_
 341  * and _ret_count_ if they are non-NULL pointers.  Returns 0 on
 342  * success, and an error code on an error.
 343  *
 344  * As a special case, if the first argument is NULL, then it will
 345  * attempt to free the static zeroizing buffer.  (This is to keep
 346  * programs that check for memory leaks happy.)
 347  */
 348 static errcode_t zero_blocks(ext2_filsys fs, blk_t blk, int num,
 349                              struct progress_struct *progress,
 350                              blk_t *ret_blk, int *ret_count)
 351 {
 352         int             j, count, next_update, next_update_incr;
 353         static char     *buf;
 354         errcode_t       retval;
 355
 356         /* If fs is null, clean up the static buffer and return */
 357         if (!fs) {
 358                 if (buf) {
 359                         free(buf);
 360                         buf = 0;
 361                 }
 362                 return 0;
 363         }
 364         /* Allocate the zeroizing buffer if necessary */
 365         if (!buf) {
 366                 buf = xcalloc(fs->blocksize, STRIDE_LENGTH);
 367         }
 368         /* OK, do the write loop */
 369         next_update = 0;
 370         next_update_incr = num / 100;
 371         if (next_update_incr < 1)
 372                 next_update_incr = 1;
 373         for (j=0; j < num; j += STRIDE_LENGTH, blk += STRIDE_LENGTH) {
 374                 count = num - j;
 375                 if (count > STRIDE_LENGTH)
 376                         count = STRIDE_LENGTH;
 377                 retval = io_channel_write_blk(fs->io, blk, count, buf);
 378                 if (retval) {
 379                         if (ret_count)
 380                                 *ret_count = count;
 381                         if (ret_blk)
 382                                 *ret_blk = blk;
 383                         return retval;
 384                 }
 385                 if (progress && j > next_update) {
 386                         next_update += num / 100;
 387                         progress_update(progress, blk);
 388                 }
 389         }
 390         return 0;
 391 }
 392
 393 static void write_inode_tables(ext2_filsys fs)
 394 {
 395         errcode_t       retval;
 396         blk_t           blk;
 397         dgrp_t          i;
 398         int             num;
 399         struct progress_struct progress;
 400
 401         if (quiet)
 402                 memset(&progress, 0, sizeof(progress));
 403         else
 404                 progress_init(&progress, "Writing inode tables: ",
 405                               fs->group_desc_count);
 406
 407         for (i = 0; i < fs->group_desc_count; i++) {
 408                 progress_update(&progress, i);
 409
 410                 blk = fs->group_desc[i].bg_inode_table;
 411                 num = fs->inode_blocks_per_group;
 412
 413                 retval = zero_blocks(fs, blk, num, 0, &blk, &num);
 414                 if (retval) {
 415                         bb_error_msg_and_die(
 416                                 "\nCould not write %d blocks "
 417                                 "in inode table starting at %d.",
 418                                 num, blk);
 419                 }
 420                 if (sync_kludge) {
 421                         if (sync_kludge == 1)
 422                                 sync();
 423                         else if ((i % sync_kludge) == 0)
 424                                 sync();
 425                 }
 426         }
 427         zero_blocks(0, 0, 0, 0, 0, 0);
 428         progress_close(&progress);
 429 }
 430
 431 static void create_root_dir(ext2_filsys fs)
 432 {
 433         errcode_t               retval;
 434         struct ext2_inode       inode;
 435
 436         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0);
 437         if (retval) {
 438                 bb_error_msg_and_die("Could not create root dir");
 439         }
 440         if (geteuid()) {
 441                 retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode);
 442                 if (retval) {
 443                         bb_error_msg_and_die("Could not read root inode");
 444                 }
 445                 inode.i_uid = getuid();
 446                 if (inode.i_uid)
 447                         inode.i_gid = getgid();
 448                 retval = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode);
 449                 if (retval) {
 450                         bb_error_msg_and_die("Could not set root inode ownership");
 451                 }
 452         }
 453 }
 454
 455 static void create_lost_and_found(ext2_filsys fs)
 456 {
 457         errcode_t               retval;
 458         ext2_ino_t              ino;
 459         const char              *name = "lost+found";
 460         int                     i;
 461         int                     lpf_size = 0;
 462
 463         fs->umask = 077;
 464         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name);
 465         if (retval) {
 466                 bb_error_msg_and_die("Could not create lost+found");
 467         }
 468
 469         retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
 470         if (retval) {
 471                 bb_error_msg_and_die("Could not look up lost+found");
 472         }
 473
 474         for (i=1; i < EXT2_NDIR_BLOCKS; i++) {
 475                 if ((lpf_size += fs->blocksize) >= 16*1024)
 476                         break;
 477                 retval = ext2fs_expand_dir(fs, ino);
 478                 if (retval) {
 479                         bb_error_msg_and_die("Could not expand lost+found");
 480                 }
 481         }
 482 }
 483
 484 static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list)
 485 {
 486         errcode_t       retval;
 487
 488         ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO);
 489         fs->group_desc[0].bg_free_inodes_count--;
 490         fs->super->s_free_inodes_count--;
 491         retval = ext2fs_update_bb_inode(fs, bb_list);
 492         if (retval) {
 493                 bb_error_msg_and_die("Could not set bad block inode");
 494         }
 495
 496 }
 497
 498 static void reserve_inodes(ext2_filsys fs)
 499 {
 500         ext2_ino_t      i;
 501         int             group;
 502
 503         for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++) {
 504                 ext2fs_mark_inode_bitmap(fs->inode_map, i);
 505                 group = ext2fs_group_of_ino(fs, i);
 506                 fs->group_desc[group].bg_free_inodes_count--;
 507                 fs->super->s_free_inodes_count--;
 508         }
 509         ext2fs_mark_ib_dirty(fs);
 510 }
 511
 512 #define BSD_DISKMAGIC   (0x82564557UL)  /* The disk magic number */
 513 #define BSD_MAGICDISK   (0x57455682UL)  /* The disk magic number reversed */
 514 #define BSD_LABEL_OFFSET        64
 515
 516 static void zap_sector(ext2_filsys fs, int sect, int nsect)
 517 {
 518         char *buf;
 519         int retval;
 520         unsigned int *magic;
 521
 522         buf = xmalloc(512*nsect);
 523
 524         if (sect == 0) {
 525                 /* Check for a BSD disklabel, and don't erase it if so */
 526                 retval = io_channel_read_blk(fs->io, 0, -512, buf);
 527                 if (retval)
 528                         bb_error_msg("Warning: could not read block 0");
 529                 else {
 530                         magic = (unsigned int *) (buf + BSD_LABEL_OFFSET);
 531                         if ((*magic == BSD_DISKMAGIC) ||
 532                             (*magic == BSD_MAGICDISK))
 533                                 return;
 534                 }
 535         }
 536
 537         memset(buf, 0, 512*nsect);
 538         io_channel_set_blksize(fs->io, 512);
 539         retval = io_channel_write_blk(fs->io, sect, -512*nsect, buf);
 540         io_channel_set_blksize(fs->io, fs->blocksize);
 541         free(buf);
 542         if (retval)
 543                 bb_error_msg("Warning: could not erase sector %d", sect);
 544 }
 545
 546 static void create_journal_dev(ext2_filsys fs)
 547 {
 548         struct progress_struct  progress;
 549         errcode_t               retval;
 550         char                    *buf;
 551         blk_t                   blk;
 552         int                     count;
 553
 554         retval = ext2fs_create_journal_superblock(fs,
 555                                   fs->super->s_blocks_count, 0, &buf);
 556         if (retval) {
 557                 bb_error_msg_and_die("Could not init journal superblock");
 558         }
 559         if (quiet)
 560                 memset(&progress, 0, sizeof(progress));
 561         else
 562                 progress_init(&progress, "Zeroing journal device: ",
 563                               fs->super->s_blocks_count);
 564
 565         retval = zero_blocks(fs, 0, fs->super->s_blocks_count,
 566                              &progress, &blk, &count);
 567         if (retval) {
 568                 bb_error_msg_and_die("Could not zero journal device (block %u, count %d)",
 569                         blk, count);
 570         }
 571         zero_blocks(0, 0, 0, 0, 0, 0);
 572
 573         retval = io_channel_write_blk(fs->io,
 574                                       fs->super->s_first_data_block+1,
 575                                       1, buf);
 576         if (retval) {
 577                 bb_error_msg_and_die("Could not write journal superblock");
 578         }
 579         progress_close(&progress);
 580 }
 581
 582 static void show_stats(ext2_filsys fs)
 583 {
 584         struct ext2_super_block *s = fs->super;
 585         char                    buf[80];
 586         char                    *os;
 587         blk_t                   group_block;
 588         dgrp_t                  i;
 589         int                     need, col_left;
 590
 591         if (param.s_blocks_count != s->s_blocks_count)
 592                 bb_error_msg("warning: %d blocks unused\n",
 593                        param.s_blocks_count - s->s_blocks_count);
 594
 595         memset(buf, 0, sizeof(buf));
 596         strncpy(buf, s->s_volume_name, sizeof(s->s_volume_name));
 597         printf("Filesystem label=%s\n", buf);
 598         fputs("OS type: ", stdout);
 599         os = e2p_os2string(fs->super->s_creator_os);
 600         fputs(os, stdout);
 601         free(os);
 602         printf("\nBlock size=%u (log=%u)\n", fs->blocksize,
 603                 s->s_log_block_size);
 604         printf("Fragment size=%u (log=%u)\n", fs->fragsize,
 605                 s->s_log_frag_size);
 606         printf("%u inodes, %u blocks\n", s->s_inodes_count,
 607                s->s_blocks_count);
 608         printf("%u blocks (%2.2f%%) reserved for the super user\n",
 609                 s->s_r_blocks_count,
 610                100.0 * s->s_r_blocks_count / s->s_blocks_count);
 611         printf("First data block=%u\n", s->s_first_data_block);
 612         if (s->s_reserved_gdt_blocks)
 613                 printf("Maximum filesystem blocks=%lu\n",
 614                        (s->s_reserved_gdt_blocks + fs->desc_blocks) *
 615                        (fs->blocksize / sizeof(struct ext2_group_desc)) *
 616                        s->s_blocks_per_group);
 617         if (fs->group_desc_count > 1)
 618                 printf("%u block groups\n", fs->group_desc_count);
 619         else
 620                 printf("%u block group\n", fs->group_desc_count);
 621         printf("%u blocks per group, %u fragments per group\n",
 622                s->s_blocks_per_group, s->s_frags_per_group);
 623         printf("%u inodes per group\n", s->s_inodes_per_group);
 624
 625         if (fs->group_desc_count == 1) {
 626                 printf("\n");
 627                 return;
 628         }
 629
 630         printf("Superblock backups stored on blocks: ");
 631         group_block = s->s_first_data_block;
 632         col_left = 0;
 633         for (i = 1; i < fs->group_desc_count; i++) {
 634                 group_block += s->s_blocks_per_group;
 635                 if (!ext2fs_bg_has_super(fs, i))
 636                         continue;
 637                 if (i != 1)
 638                         printf(", ");
 639                 need = int_log10(group_block) + 2;
 640                 if (need > col_left) {
 641                         printf("\n\t");
 642                         col_left = 72;
 643                 }
 644                 col_left -= need;
 645                 printf("%u", group_block);
 646         }
 647         printf("\n\n");
 648 }
 649
 650 /*
 651  * Set the S_CREATOR_OS field.  Return true if OS is known,
 652  * otherwise, 0.
 653  */
 654 static int set_os(struct ext2_super_block *sb, char *os)
 655 {
 656         if (isdigit (*os))
 657                 sb->s_creator_os = atoi (os);
 658         else if (strcasecmp(os, "linux") == 0)
 659                 sb->s_creator_os = EXT2_OS_LINUX;
 660         else if (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0)
 661                 sb->s_creator_os = EXT2_OS_HURD;
 662         else if (strcasecmp(os, "masix") == 0)
 663                 sb->s_creator_os = EXT2_OS_MASIX;
 664         else if (strcasecmp(os, "freebsd") == 0)
 665                 sb->s_creator_os = EXT2_OS_FREEBSD;
 666         else if (strcasecmp(os, "lites") == 0)
 667                 sb->s_creator_os = EXT2_OS_LITES;
 668         else
 669                 return 0;
 670
 671         return 1;
 672 }
 673
 674 #define PATH_SET "PATH=/sbin"
 675
 676 static void parse_extended_opts(struct ext2_super_block *sb_param,
 677                                 const char *opts)
 678 {
 679         char    *buf, *token, *next, *p, *arg;
 680         int     r_usage = 0;
 681
 682         buf = bb_xstrdup(opts);
 683         for (token = buf; token && *token; token = next) {
 684                 p = strchr(token, ',');
 685                 next = 0;
 686                 if (p) {
 687                         *p = 0;
 688                         next = p+1;
 689                 }
 690                 arg = strchr(token, '=');
 691                 if (arg) {
 692                         *arg = 0;
 693                         arg++;
 694                 }
 695                 if (strcmp(token, "stride") == 0) {
 696                         if (!arg) {
 697                                 r_usage++;
 698                                 continue;
 699                         }
 700                         fs_stride = strtoul(arg, &p, 0);
 701                         if (*p || (fs_stride == 0)) {
 702                                 bb_error_msg("Invalid stride parameter");
 703                                 r_usage++;
 704                                 continue;
 705                         }
 706                 } else if (!strcmp(token, "resize")) {
 707                         unsigned long resize, bpg, rsv_groups;
 708                         unsigned long group_desc_count, desc_blocks;
 709                         unsigned int gdpb, blocksize;
 710                         int rsv_gdb;
 711
 712                         if (!arg) {
 713                                 r_usage++;
 714                                 continue;
 715                         }
 716
 717                         resize = parse_num_blocks(arg,
 718                                                   sb_param->s_log_block_size);
 719
 720                         if (resize == 0) {
 721                                 bb_error_msg("Invalid resize parameter: %s", arg);
 722                                 r_usage++;
 723                                 continue;
 724                         }
 725                         if (resize <= sb_param->s_blocks_count) {
 726                                 bb_error_msg("The resize maximum must be greater than the filesystem size");
 727                                 r_usage++;
 728                                 continue;
 729                         }
 730
 731                         blocksize = EXT2_BLOCK_SIZE(sb_param);
 732                         bpg = sb_param->s_blocks_per_group;
 733                         if (!bpg)
 734                                 bpg = blocksize * 8;
 735                         gdpb = blocksize / sizeof(struct ext2_group_desc);
 736                         group_desc_count = (sb_param->s_blocks_count +
 737                                             bpg - 1) / bpg;
 738                         desc_blocks = (group_desc_count +
 739                                        gdpb - 1) / gdpb;
 740                         rsv_groups = (resize + bpg - 1) / bpg;
 741                         rsv_gdb = (rsv_groups + gdpb - 1) / gdpb -
 742                                 desc_blocks;
 743                         if (rsv_gdb > EXT2_ADDR_PER_BLOCK(sb_param))
 744                                 rsv_gdb = EXT2_ADDR_PER_BLOCK(sb_param);
 745
 746                         if (rsv_gdb > 0) {
 747                                 sb_param->s_feature_compat |=
 748                                         EXT2_FEATURE_COMPAT_RESIZE_INODE;
 749
 750                                 sb_param->s_reserved_gdt_blocks = rsv_gdb;
 751                         }
 752                 } else
 753                         r_usage++;
 754         }
 755         if (r_usage) {
 756                 bb_error_msg_and_die(
 757                         "\nBad options specified.\n\n"
 758                         "Options are separated by commas, "
 759                         "and may take an argument which\n"
 760                         "\tis set off by an equals ('=') sign.\n\n"
 761                         "Valid raid options are:\n"
 762                         "\tstride=<stride length in blocks>\n"
 763                         "\tresize=<resize maximum size in blocks>\n");
 764         }
 765 }
 766
 767 static __u32 ok_features[3] = {
 768         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 769                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 770                 EXT2_FEATURE_COMPAT_DIR_INDEX,  /* Compat */
 771         EXT2_FEATURE_INCOMPAT_FILETYPE|         /* Incompat */
 772                 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|
 773                 EXT2_FEATURE_INCOMPAT_META_BG,
 774         EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER     /* R/O compat */
 775 };
 776
 777
 778 static int PRS(int argc, char *argv[])
 779 {
 780         int             b, c;
 781         int             size;
 782         char *          tmp;
 783         int             blocksize = 0;
 784         int             inode_ratio = 0;
 785         int             inode_size = 0;
 786         int             reserved_ratio = 5;
 787         int             sector_size = 0;
 788         int             show_version_only = 0;
 789         ext2_ino_t      num_inodes = 0;
 790         errcode_t       retval;
 791         char *          oldpath = getenv("PATH");
 792         char *          extended_opts = 0;
 793         const char *    fs_type = 0;
 794         blk_t           dev_size;
 795         long            sysval;
 796
 797         /* Update our PATH to include /sbin  */
 798         if (oldpath) {
 799                 char *newpath;
 800
 801                 bb_xasprintf(&newpath, "%s:%s", PATH_SET, oldpath);
 802         } else
 803                 putenv (PATH_SET);
 804
 805         tmp = getenv("MKE2FS_SYNC");
 806         if (tmp)
 807                 sync_kludge = atoi(tmp);
 808
 809         /* Determine the system page size if possible */
 810 #if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE))
 811 #define _SC_PAGESIZE _SC_PAGE_SIZE
 812 #endif
 813 #ifdef _SC_PAGESIZE
 814         sysval = sysconf(_SC_PAGESIZE);
 815         if (sysval > 0)
 816                 sys_page_size = sysval;
 817 #endif /* _SC_PAGESIZE */
 818
 819         setbuf(stdout, NULL);
 820         setbuf(stderr, NULL);
 821         memset(&param, 0, sizeof(struct ext2_super_block));
 822         param.s_rev_level = 1;  /* Create revision 1 filesystems now */
 823         param.s_feature_incompat |= EXT2_FEATURE_INCOMPAT_FILETYPE;
 824         param.s_feature_ro_compat |= EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
 825 #if 0
 826         param.s_feature_compat |= EXT2_FEATURE_COMPAT_DIR_INDEX;
 827 #endif
 828
 829 #ifdef __linux__
 830         linux_version_code = get_kernel_revision();
 831         if (linux_version_code && linux_version_code < (2*65536 + 2*256)) {
 832                 param.s_rev_level = 0;
 833                 param.s_feature_incompat = 0;
 834                 param.s_feature_compat = 0;
 835                 param.s_feature_ro_compat = 0;
 836         }
 837 #endif
 838
 839         if (argc && *argv) {
 840                 /* If called as mkfs.ext3, create a journal inode */
 841                 if (!strcmp(*argv + strlen(*argv) - 9, "mkfs.ext3"))
 842                         journal_size = -1;
 843         }
 844
 845         while ((c = getopt (argc, argv,
 846                     "b:cE:f:g:i:jl:m:no:qr:R:s:tvI:J:ST:FL:M:N:O:V")) != EOF) {
 847                 switch (c) {
 848                 case 'b':
 849                         blocksize = strtol(optarg, &tmp, 0);
 850                         b = (blocksize > 0) ? blocksize : -blocksize;
 851                         if (b < EXT2_MIN_BLOCK_SIZE ||
 852                             b > EXT2_MAX_BLOCK_SIZE || *tmp) {
 853                                 bb_error_msg_and_die("bad block size - %s", optarg);
 854                         }
 855                         if (blocksize > 4096)
 856                                 bb_error_msg(
 857                                         "Warning: blocksize %d not usable on most systems",
 858                                         blocksize);
 859                         if (blocksize > 0)
 860                                 param.s_log_block_size =
 861                                         int_log2(blocksize >>
 862                                                  EXT2_MIN_BLOCK_LOG_SIZE);
 863                         break;
 864                 case 'c':       /* Check for bad blocks */
 865                 case 't':       /* deprecated */
 866                         cflag++;
 867                         break;
 868                 case 'f':
 869                         size = strtoul(optarg, &tmp, 0);
 870                         if (size < EXT2_MIN_BLOCK_SIZE ||
 871                             size > EXT2_MAX_BLOCK_SIZE || *tmp) {
 872                                 bb_error_msg_and_die("bad fragment size - %s", optarg);
 873                         }
 874                         param.s_log_frag_size =
 875                                 int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE);
 876                         bb_error_msg(
 877                                 "Warning: fragments not supported.  "
 878                                 "Ignoring -f option");
 879                         break;
 880                 case 'g':
 881                         param.s_blocks_per_group = strtoul(optarg, &tmp, 0);
 882                         if (*tmp) {
 883                                 bb_error_msg_and_die("Illegal number for blocks per group");
 884                         }
 885                         if ((param.s_blocks_per_group % 8) != 0) {
 886                                 bb_error_msg_and_die("blocks per group must be multiple of 8");
 887                         }
 888                         break;
 889                 case 'i':
 890                         inode_ratio = strtoul(optarg, &tmp, 0);
 891                         if (inode_ratio < EXT2_MIN_BLOCK_SIZE ||
 892                             inode_ratio > EXT2_MAX_BLOCK_SIZE * 1024 ||
 893                             *tmp) {
 894                                 bb_error_msg_and_die("bad inode ratio %s (min %d/max %d",
 895                                         optarg, EXT2_MIN_BLOCK_SIZE,
 896                                         EXT2_MAX_BLOCK_SIZE);
 897                         }
 898                         break;
 899                 case 'J':
 900                         parse_journal_opts(&journal_device, &journal_flags, &journal_size, optarg);
 901                         break;
 902                 case 'j':
 903                         param.s_feature_compat |=
 904                                 EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 905                         if (!journal_size)
 906                                 journal_size = -1;
 907                         break;
 908                 case 'l':
 909                         bad_blocks_filename = optarg;
 910                         break;
 911                 case 'm':
 912                         reserved_ratio = strtoul(optarg, &tmp, 0);
 913                         if (reserved_ratio > 50 || *tmp) {
 914                                 bb_error_msg_and_die("bad reserved blocks percent - %s", optarg);
 915                         }
 916                         break;
 917                 case 'n':
 918                         noaction++;
 919                         break;
 920                 case 'o':
 921                         creator_os = optarg;
 922                         break;
 923                 case 'r':
 924                         param.s_rev_level = atoi(optarg);
 925                         if (param.s_rev_level == EXT2_GOOD_OLD_REV) {
 926                                 param.s_feature_incompat = 0;
 927                                 param.s_feature_compat = 0;
 928                                 param.s_feature_ro_compat = 0;
 929                         }
 930                         break;
 931                 case 's':       /* deprecated */
 932                         if (atoi(optarg))
 933                                 param.s_feature_ro_compat |=
 934                                         EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
 935                         else
 936                                 param.s_feature_ro_compat &=
 937                                         ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
 938                         break;
 939 #ifdef EXT2_DYNAMIC_REV
 940                 case 'I':
 941                         inode_size = strtoul(optarg, &tmp, 0);
 942                         if (*tmp) {
 943                                 bb_error_msg_and_die("bad inode size - %s", optarg);
 944                         }
 945                         break;
 946 #endif
 947                 case 'N':
 948                         num_inodes = atoi(optarg);
 949                         break;
 950                 case 'v':
 951                         quiet = 0;
 952                         break;
 953                 case 'q':
 954                         quiet = 1;
 955                         break;
 956                 case 'F':
 957                         force = 1;
 958                         break;
 959                 case 'L':
 960                         volume_label = optarg;
 961                         break;
 962                 case 'M':
 963                         mount_dir = optarg;
 964                         break;
 965                 case 'O':
 966                         if (!strcmp(optarg, "none")) {
 967                                 param.s_feature_compat = 0;
 968                                 param.s_feature_incompat = 0;
 969                                 param.s_feature_ro_compat = 0;
 970                                 break;
 971                         }
 972                         if (e2p_edit_feature(optarg,
 973                                             &param.s_feature_compat,
 974                                             ok_features)) {
 975                                 bb_error_msg_and_die("Invalid filesystem option set: %s", optarg);
 976                         }
 977                         break;
 978                 case 'E':
 979                 case 'R':
 980                         extended_opts = optarg;
 981                         break;
 982                 case 'S':
 983                         super_only = 1;
 984                         break;
 985                 case 'T':
 986                         fs_type = optarg;
 987                         break;
 988                 case 'V':
 989                         /* Print version number and exit */
 990                         show_version_only++;
 991                         break;
 992                 default:
 993                         bb_show_usage();
 994                 }
 995         }
 996         if ((optind == argc) && !show_version_only)
 997                 bb_show_usage();
 998         device_name = argv[optind++];
 999
1000         if (!quiet || show_version_only)
1001                 bb_error_msg("mke2fs %s (%s)", E2FSPROGS_VERSION,
1002                          E2FSPROGS_DATE);
1003
1004         if (show_version_only) {
1005                 return 0;
1006         }
1007
1008         /*
1009          * If there's no blocksize specified and there is a journal
1010          * device, use it to figure out the blocksize
1011          */
1012         if (blocksize <= 0 && journal_device) {
1013                 ext2_filsys     jfs;
1014                 io_manager      io_ptr;
1015
1016 #ifdef CONFIG_TESTIO_DEBUG
1017                 io_ptr = test_io_manager;
1018                 test_io_backing_manager = unix_io_manager;
1019 #else
1020                 io_ptr = unix_io_manager;
1021 #endif
1022                 retval = ext2fs_open(journal_device,
1023                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1024                                      0, io_ptr, &jfs);
1025                 if (retval) {
1026                         bb_error_msg_and_die("Could not open journal device %s", journal_device);
1027                 }
1028                 if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) {
1029                         bb_error_msg_and_die(
1030                                 "Journal dev blocksize (%d) smaller than "
1031                                 "minimum blocksize %d\n", jfs->blocksize,
1032                                 -blocksize);
1033                 }
1034                 blocksize = jfs->blocksize;
1035                 param.s_log_block_size =
1036                         int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
1037                 ext2fs_close(jfs);
1038         }
1039
1040         if (blocksize > sys_page_size) {
1041                 if (!force) {
1042                         bb_error_msg("%d-byte blocks too big for system (max %d)",
1043                                 blocksize, sys_page_size);
1044                         proceed_question();
1045                 }
1046                 bb_error_msg(
1047                         "Warning: %d-byte blocks too big for system "
1048                         "(max %d), forced to continue",
1049                         blocksize, sys_page_size);
1050         }
1051         if ((blocksize > 4096) &&
1052             (param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL))
1053                 bb_error_msg(
1054                         "\nWarning: some 2.4 kernels do not support "
1055                         "blocksizes greater than 4096 \n\tusing ext3."
1056                         "  Use -b 4096 if this is an issue for you\n");
1057
1058         if (optind < argc) {
1059                 param.s_blocks_count = parse_num_blocks(argv[optind++],
1060                                 param.s_log_block_size);
1061                 if (!param.s_blocks_count) {
1062                         bb_error_msg_and_die("bad blocks count - %s", argv[optind - 1]);
1063                 }
1064         }
1065         if (optind < argc)
1066                 bb_show_usage();
1067
1068         if (param.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
1069                 if (!fs_type)
1070                         fs_type = "journal";
1071                 reserved_ratio = 0;
1072                 param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV;
1073                 param.s_feature_compat = 0;
1074                 param.s_feature_ro_compat = 0;
1075         }
1076         if (param.s_rev_level == EXT2_GOOD_OLD_REV &&
1077             (param.s_feature_compat || param.s_feature_ro_compat ||
1078              param.s_feature_incompat))
1079                 param.s_rev_level = 1;  /* Create a revision 1 filesystem */
1080
1081         if (!force)
1082                 check_plausibility(device_name);
1083         check_mount(device_name, force, "filesystem");
1084
1085         param.s_log_frag_size = param.s_log_block_size;
1086
1087         if (noaction && param.s_blocks_count) {
1088                 dev_size = param.s_blocks_count;
1089                 retval = 0;
1090         } else {
1091         retry:
1092                 retval = ext2fs_get_device_size(device_name,
1093                                                 EXT2_BLOCK_SIZE(&param),
1094                                                 &dev_size);
1095                 if ((retval == EFBIG) &&
1096                     (blocksize == 0) &&
1097                     (param.s_log_block_size == 0)) {
1098                         param.s_log_block_size = 2;
1099                         blocksize = 4096;
1100                         goto retry;
1101                 }
1102         }
1103
1104         if (retval && (retval != EXT2_ET_UNIMPLEMENTED)) {
1105                 bb_error_msg_and_die("Could not determine filesystem size");
1106         }
1107         if (!param.s_blocks_count) {
1108                 if (retval == EXT2_ET_UNIMPLEMENTED) {
1109                         bb_error_msg_and_die(
1110                                 "Couldn't determine device size; you "
1111                                 "must specify\nthe size of the "
1112                                 "filesystem");
1113                 } else {
1114                         if (dev_size == 0) {
1115                                 bb_error_msg_and_die(
1116                                         "Device size reported to be zero.  "
1117                                         "Invalid partition specified, or\n\t"
1118                                         "partition table wasn't reread "
1119                                         "after running fdisk, due to\n\t"
1120                                         "a modified partition being busy "
1121                                         "and in use.  You may need to reboot\n\t"
1122                                         "to re-read your partition table.\n"
1123                                 );
1124                         }
1125                         param.s_blocks_count = dev_size;
1126                         if (sys_page_size > EXT2_BLOCK_SIZE(&param))
1127                                 param.s_blocks_count &= ~((sys_page_size /
1128                                                            EXT2_BLOCK_SIZE(&param))-1);
1129                 }
1130
1131         } else if (!force && (param.s_blocks_count > dev_size)) {
1132                 bb_error_msg("Filesystem larger than apparent device size");
1133                 proceed_question();
1134         }
1135
1136         /*
1137          * If the user asked for HAS_JOURNAL, then make sure a journal
1138          * gets created.
1139          */
1140         if ((param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
1141             !journal_size)
1142                 journal_size = -1;
1143
1144         /* Set first meta blockgroup via an environment variable */
1145         /* (this is mostly for debugging purposes) */
1146         if ((param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) &&
1147             ((tmp = getenv("MKE2FS_FIRST_META_BG"))))
1148                 param.s_first_meta_bg = atoi(tmp);
1149
1150         /* Get the hardware sector size, if available */
1151         retval = ext2fs_get_device_sectsize(device_name, &sector_size);
1152         if (retval) {
1153                 bb_error_msg_and_die("Could not determine hardware sector size");
1154         }
1155
1156         if ((tmp = getenv("MKE2FS_DEVICE_SECTSIZE")) != NULL)
1157                 sector_size = atoi(tmp);
1158
1159         set_fs_defaults(fs_type, &param, blocksize, sector_size, &inode_ratio);
1160         blocksize = EXT2_BLOCK_SIZE(&param);
1161
1162         if (extended_opts)
1163                 parse_extended_opts(&param, extended_opts);
1164
1165         /* Since sparse_super is the default, we would only have a problem
1166          * here if it was explicitly disabled.
1167          */
1168         if ((param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE) &&
1169             !(param.s_feature_ro_compat&EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1170                 bb_error_msg_and_die("reserved online resize blocks not supported "
1171                           "on non-sparse filesystem");
1172         }
1173
1174         if (param.s_blocks_per_group) {
1175                 if (param.s_blocks_per_group < 256 ||
1176                     param.s_blocks_per_group > 8 * (unsigned) blocksize) {
1177                         bb_error_msg_and_die("blocks per group count out of range");
1178                 }
1179         }
1180
1181         if (inode_size) {
1182                 if (inode_size < EXT2_GOOD_OLD_INODE_SIZE ||
1183                     inode_size > EXT2_BLOCK_SIZE(&param) ||
1184                     inode_size & (inode_size - 1)) {
1185                         bb_error_msg_and_die("bad inode size %d (min %d/max %d)",
1186                                 inode_size, EXT2_GOOD_OLD_INODE_SIZE,
1187                                 blocksize);
1188                 }
1189                 if (inode_size != EXT2_GOOD_OLD_INODE_SIZE)
1190                         bb_error_msg(
1191                                 "Warning: %d-byte inodes not usable on most systems",
1192                                 inode_size);
1193                 param.s_inode_size = inode_size;
1194         }
1195
1196         /*
1197          * Calculate number of inodes based on the inode ratio
1198          */
1199         param.s_inodes_count = num_inodes ? num_inodes :
1200                 ((__u64) param.s_blocks_count * blocksize)
1201                         / inode_ratio;
1202
1203         /*
1204          * Calculate number of blocks to reserve
1205          */
1206         param.s_r_blocks_count = (param.s_blocks_count * reserved_ratio) / 100;
1207         return 1;
1208 }
1209
1210 int mke2fs_main (int argc, char *argv[])
1211 {
1212         errcode_t       retval;
1213         ext2_filsys     fs;
1214         badblocks_list  bb_list = 0;
1215         int             journal_blocks;
1216         unsigned int    i;
1217         int             val;
1218         io_manager      io_ptr;
1219
1220         if(!PRS(argc, argv))
1221                 return 0;
1222
1223 #ifdef CONFIG_TESTIO_DEBUG
1224         io_ptr = test_io_manager;
1225         test_io_backing_manager = unix_io_manager;
1226 #else
1227         io_ptr = unix_io_manager;
1228 #endif
1229
1230         /*
1231          * Initialize the superblock....
1232          */
1233         retval = ext2fs_initialize(device_name, 0, &param,
1234                                    io_ptr, &fs);
1235         if (retval) {
1236                 bb_error_msg_and_die("Could not set up superblock");
1237         }
1238
1239         /*
1240          * Wipe out the old on-disk superblock
1241          */
1242         if (!noaction)
1243                 zap_sector(fs, 2, 6);
1244
1245         /*
1246          * Generate a UUID for it...
1247          */
1248         uuid_generate(fs->super->s_uuid);
1249
1250         /*
1251          * Initialize the directory index variables
1252          */
1253         fs->super->s_def_hash_version = EXT2_HASH_TEA;
1254         uuid_generate((unsigned char *) fs->super->s_hash_seed);
1255
1256         /*
1257          * Add "jitter" to the superblock's check interval so that we
1258          * don't check all the filesystems at the same time.  We use a
1259          * kludgy hack of using the UUID to derive a random jitter value.
1260          */
1261         for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++)
1262                 val += fs->super->s_uuid[i];
1263         fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT;
1264
1265         /*
1266          * Override the creator OS, if applicable
1267          */
1268         if (creator_os && !set_os(fs->super, creator_os)) {
1269                 bb_error_msg_and_die("unknown os - %s", creator_os);
1270         }
1271
1272         /*
1273          * For the Hurd, we will turn off filetype since it doesn't
1274          * support it.
1275          */
1276         if (fs->super->s_creator_os == EXT2_OS_HURD)
1277                 fs->super->s_feature_incompat &=
1278                         ~EXT2_FEATURE_INCOMPAT_FILETYPE;
1279
1280         /*
1281          * Set the volume label...
1282          */
1283         if (volume_label) {
1284                 memset(fs->super->s_volume_name, 0,
1285                        sizeof(fs->super->s_volume_name));
1286                 strncpy(fs->super->s_volume_name, volume_label,
1287                         sizeof(fs->super->s_volume_name));
1288         }
1289
1290         /*
1291          * Set the last mount directory
1292          */
1293         if (mount_dir) {
1294                 memset(fs->super->s_last_mounted, 0,
1295                        sizeof(fs->super->s_last_mounted));
1296                 strncpy(fs->super->s_last_mounted, mount_dir,
1297                         sizeof(fs->super->s_last_mounted));
1298         }
1299
1300         if (!quiet || noaction)
1301                 show_stats(fs);
1302
1303         if (noaction)
1304                 return 0;
1305
1306         if (fs->super->s_feature_incompat &
1307             EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
1308                 create_journal_dev(fs);
1309                 return (ext2fs_close(fs) ? 1 : 0);
1310         }
1311
1312         if (bad_blocks_filename)
1313                 read_bb_file(fs, &bb_list, bad_blocks_filename);
1314         if (cflag)
1315                 test_disk(fs, &bb_list);
1316
1317         handle_bad_blocks(fs, bb_list);
1318         fs->stride = fs_stride;
1319         retval = ext2fs_allocate_tables(fs);
1320         if (retval) {
1321                 bb_error_msg_and_die("Could not allocate filesystem tables");
1322         }
1323         if (super_only) {
1324                 fs->super->s_state |= EXT2_ERROR_FS;
1325                 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY);
1326         } else {
1327                 /* rsv must be a power of two (64kB is MD RAID sb alignment) */
1328                 unsigned int rsv = 65536 / fs->blocksize;
1329                 unsigned long blocks = fs->super->s_blocks_count;
1330                 unsigned long start;
1331                 blk_t ret_blk;
1332
1333 #ifdef ZAP_BOOTBLOCK
1334                 zap_sector(fs, 0, 2);
1335 #endif
1336
1337                 /*
1338                  * Wipe out any old MD RAID (or other) metadata at the end
1339                  * of the device.  This will also verify that the device is
1340                  * as large as we think.  Be careful with very small devices.
1341                  */
1342                 start = (blocks & ~(rsv - 1));
1343                 if (start > rsv)
1344                         start -= rsv;
1345                 if (start > 0)
1346                         retval = zero_blocks(fs, start, blocks - start,
1347                                              NULL, &ret_blk, NULL);
1348
1349                 if (retval) {
1350                         bb_error_msg("Could not zero block %u at end of filesystem", ret_blk);
1351                 }
1352                 write_inode_tables(fs);
1353                 create_root_dir(fs);
1354                 create_lost_and_found(fs);
1355                 reserve_inodes(fs);
1356                 create_bad_block_inode(fs, bb_list);
1357                 if (fs->super->s_feature_compat &
1358                     EXT2_FEATURE_COMPAT_RESIZE_INODE) {
1359                         retval = ext2fs_create_resize_inode(fs);
1360                         if (retval) {
1361                                 bb_error_msg_and_die("Could not reserve blocks for online resize");
1362                         }
1363                 }
1364         }
1365
1366         if (journal_device) {
1367                 ext2_filsys     jfs;
1368
1369                 if (!force)
1370                         check_plausibility(journal_device);
1371                 check_mount(journal_device, force, "journal");
1372
1373                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1374                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1375                                      fs->blocksize, unix_io_manager, &jfs);
1376                 if (retval) {
1377                         bb_error_msg_and_die("Could not open journal device %s", journal_device);
1378                 }
1379                 if (!quiet) {
1380                         printf("Adding journal to device %s: ", journal_device);
1381                         fflush(stdout);
1382                 }
1383                 retval = ext2fs_add_journal_device(fs, jfs);
1384                 if(retval) {
1385                         bb_error_msg_and_die("Could not add journal to device %s", journal_device);
1386                 }
1387                 if (!quiet)
1388                         printf("done\n");
1389                 ext2fs_close(jfs);
1390                 free(journal_device);
1391         } else if (journal_size) {
1392                 journal_blocks = figure_journal_size(journal_size, fs);
1393
1394                 if (!journal_blocks) {
1395                         fs->super->s_feature_compat &=
1396                                 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1397                         goto no_journal;
1398                 }
1399                 if (!quiet) {
1400                         printf("Creating journal (%d blocks): ",
1401                                journal_blocks);
1402                         fflush(stdout);
1403                 }
1404                 retval = ext2fs_add_journal_inode(fs, journal_blocks,
1405                                                   journal_flags);
1406                 if (retval) {
1407                         bb_error_msg_and_die("Could not create journal");
1408                 }
1409                 if (!quiet)
1410                         printf("done\n");
1411         }
1412 no_journal:
1413
1414         if (!quiet)
1415                 printf("Writing superblocks and "
1416                        "filesystem accounting information: ");
1417         retval = ext2fs_flush(fs);
1418         if (retval) {
1419                 bb_error_msg("\nWarning, had trouble writing out superblocks");
1420         }
1421         if (!quiet) {
1422                 printf("done\n\n");
1423                 if (!getenv("MKE2FS_SKIP_CHECK_MSG"))
1424                         print_check_message(fs);
1425         }
1426         val = ext2fs_close(fs);
1427         return (retval || val) ? 1 : 0;
1428 }