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  * This file may be redistributed under the terms of the GNU Public
   8  * License.
   9  */
  10
  11 /* Usage: mke2fs [options] device
  12  *
  13  * The device may be a block device or a image of one, but this isn't
  14  * enforced (but it's not much fun on a character device :-).
  15  */
  16
  17 #include <stdio.h>
  18 #include <string.h>
  19 #include <fcntl.h>
  20 #include <ctype.h>
  21 #include <time.h>
  22 #include <getopt.h>
  23 #include <unistd.h>
  24 #include <stdlib.h>
  25 #include <errno.h>
  26 #include <mntent.h>
  27 #include <sys/ioctl.h>
  28 #include <sys/types.h>
  29
  30 #include "e2fsbb.h"
  31 #include "ext2fs/ext2_fs.h"
  32 #include "uuid/uuid.h"
  33 #include "e2p/e2p.h"
  34 #include "ext2fs/ext2fs.h"
  35 #include "util.h"
  36
  37 #define STRIDE_LENGTH 8
  38
  39 #ifndef __sparc__
  40 #define ZAP_BOOTBLOCK
  41 #endif
  42
  43 static const char * device_name;
  44
  45 /* Command line options */
  46 static int      cflag;
  47 static int      quiet;
  48 static int      super_only;
  49 static int      force;
  50 static int      noaction;
  51 static int      journal_size;
  52 static int      journal_flags;
  53 static const char *bad_blocks_filename;
  54 static __u32    fs_stride;
  55
  56 static struct ext2_super_block param;
  57 static char *creator_os;
  58 static char *volume_label;
  59 static char *mount_dir;
  60 static char *journal_device = NULL;
  61 static int      sync_kludge; /* Set using the MKE2FS_SYNC env. option */
  62
  63 static int sys_page_size = 4096;
  64 static int linux_version_code = 0;
  65
  66 static int int_log2(int arg)
  67 {
  68         int     l = 0;
  69
  70         arg >>= 1;
  71         while (arg) {
  72                 l++;
  73                 arg >>= 1;
  74         }
  75         return l;
  76 }
  77
  78 static int int_log10(unsigned int arg)
  79 {
  80         int     l;
  81
  82         for (l=0; arg ; l++)
  83                 arg = arg / 10;
  84         return l;
  85 }
  86
  87 /*
  88  * This function sets the default parameters for a filesystem
  89  *
  90  * The type is specified by the user.  The size is the maximum size
  91  * (in megabytes) for which a set of parameters applies, with a size
  92  * of zero meaning that it is the default parameter for the type.
  93  * Note that order is important in the table below.
  94  */
  95 #define DEF_MAX_BLOCKSIZE -1
  96 static const char default_str[] = "default";
  97 struct mke2fs_defaults {
  98         const char      *type;
  99         int             size;
 100         int             blocksize;
 101         int             inode_ratio;
 102 };
 103
 104 static const struct mke2fs_defaults settings[] = {
 105         { default_str,   0, 4096, 8192 },
 106         { default_str, 512, 1024, 4096 },
 107         { default_str,   3, 1024, 8192 },
 108         { "journal",     0, 4096, 8192 },
 109         { "news",        0, 4096, 4096 },
 110         { "largefile",   0, 4096, 1024 * 1024 },
 111         { "largefile4",  0, 4096, 4096 * 1024 },
 112         { 0,             0,    0, 0},
 113 };
 114
 115 static void set_fs_defaults(const char *fs_type,
 116                             struct ext2_super_block *super,
 117                             int blocksize, int sector_size,
 118                             int *inode_ratio)
 119 {
 120         int     megs;
 121         int     ratio = 0;
 122         const struct mke2fs_defaults *p;
 123         int     use_bsize = 1024;
 124
 125         megs = super->s_blocks_count * (EXT2_BLOCK_SIZE(super) / 1024) / 1024;
 126         if (inode_ratio)
 127                 ratio = *inode_ratio;
 128         if (!fs_type)
 129                 fs_type = default_str;
 130         for (p = settings; p->type; p++) {
 131                 if ((strcmp(p->type, fs_type) != 0) &&
 132                     (strcmp(p->type, default_str) != 0))
 133                         continue;
 134                 if ((p->size != 0) && (megs > p->size))
 135                         continue;
 136                 if (ratio == 0)
 137                         *inode_ratio = p->inode_ratio < blocksize ?
 138                                 blocksize : p->inode_ratio;
 139                 use_bsize = p->blocksize;
 140         }
 141         if (blocksize <= 0) {
 142                 if (use_bsize == DEF_MAX_BLOCKSIZE) {
 143                         use_bsize = sys_page_size;
 144                         if ((linux_version_code < (2*65536 + 6*256)) &&
 145                             (use_bsize > 4096))
 146                                 use_bsize = 4096;
 147                 }
 148                 if (sector_size && use_bsize < sector_size)
 149                         use_bsize = sector_size;
 150                 if ((blocksize < 0) && (use_bsize < (-blocksize)))
 151                         use_bsize = -blocksize;
 152                 blocksize = use_bsize;
 153                 super->s_blocks_count /= blocksize / 1024;
 154         }
 155         super->s_log_frag_size = super->s_log_block_size =
 156                 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
 157 }
 158
 159
 160 /*
 161  * Helper function for read_bb_file and test_disk
 162  */
 163 static void invalid_block(ext2_filsys fs EXT2FS_ATTR((unused)), blk_t blk)
 164 {
 165         bb_error_msg("Bad block %u out of range; ignored", blk);
 166         return;
 167 }
 168
 169 /*
 170  * Busybox stuff
 171  */
 172 static void mke2fs_error_msg_and_die(int retval, const char *fmt, ...)__attribute__ ((format (printf, 2, 3)));
 173 static void mke2fs_error_msg_and_die(int retval, const char *fmt, ...)
 174 {
 175         va_list ap;
 176
 177         if (retval) {
 178                 va_start(ap, fmt);
 179                 bb_fprintf(stderr,"\nCould not ");
 180                 bb_vfprintf(stderr, fmt, ap);
 181                 bb_fprintf(stderr, "\n");
 182                 va_end(ap);
 183                 exit(EXIT_FAILURE);
 184         }
 185 }
 186
 187 static void mke2fs_verbose(const char *fmt, ...)__attribute__ ((format (printf, 1, 2)));
 188 static void mke2fs_verbose(const char *fmt, ...)
 189 {
 190         va_list ap;
 191
 192         if (!quiet) {
 193                 va_start(ap, fmt);
 194                 bb_vfprintf(stdout, fmt, ap);
 195                 fflush(stdout);
 196                 va_end(ap);
 197         }
 198 }
 199
 200 static void mke2fs_verbose_done(void)
 201 {
 202         mke2fs_verbose("done\n");
 203 }
 204
 205 static void mke2fs_warning_msg(int retval, char *fmt, ... )__attribute__ ((format (printf, 2, 3)));
 206 static void mke2fs_warning_msg(int retval, char *fmt, ... )
 207 {
 208         va_list ap;
 209
 210         if (retval) {
 211                 va_start(ap, fmt);
 212                 bb_fprintf(stderr,"\nWarning: ");
 213                 bb_vfprintf(stderr, fmt, ap);
 214                 bb_fprintf(stderr, "\n");
 215                 va_end(ap);
 216         }
 217 }
 218
 219 /*
 220  * Reads the bad blocks list from a file
 221  */
 222 static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list,
 223                          const char *bad_blocks_file)
 224 {
 225         FILE            *f;
 226         errcode_t       retval;
 227
 228         f = bb_xfopen(bad_blocks_file, "r");
 229         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 230         fclose (f);
 231         mke2fs_error_msg_and_die(retval, "read bad blocks from list");
 232 }
 233
 234 /*
 235  * Runs the badblocks program to test the disk
 236  */
 237 static void test_disk(ext2_filsys fs, badblocks_list *bb_list)
 238 {
 239         FILE            *f;
 240         errcode_t       retval;
 241         char            buf[1024];
 242
 243         sprintf(buf, "badblocks -b %d %s%s%s %d", fs->blocksize,
 244                 quiet ? "" : "-s ", (cflag > 1) ? "-w " : "",
 245                 fs->device_name, fs->super->s_blocks_count);
 246         mke2fs_verbose("Running command: %s\n", buf);
 247         f = popen(buf, "r");
 248         if (!f) {
 249                 bb_perror_msg_and_die("Could not run '%s'", buf);
 250         }
 251         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 252         pclose(f);
 253         mke2fs_error_msg_and_die(retval, "read bad blocks from program");
 254 }
 255
 256 static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list)
 257 {
 258         dgrp_t                  i;
 259         blk_t                   j;
 260         unsigned                must_be_good;
 261         blk_t                   blk;
 262         badblocks_iterate       bb_iter;
 263         errcode_t               retval;
 264         blk_t                   group_block;
 265         int                     group;
 266         int                     group_bad;
 267
 268         if (!bb_list)
 269                 return;
 270
 271         /*
 272          * The primary superblock and group descriptors *must* be
 273          * good; if not, abort.
 274          */
 275         must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks;
 276         for (i = fs->super->s_first_data_block; i <= must_be_good; i++) {
 277                 if (ext2fs_badblocks_list_test(bb_list, i)) {
 278                         bb_error_msg_and_die(
 279                                 "Block %d in primary superblock/group descriptor area bad\n"
 280                                 "Blocks %d through %d must be good in order to build a filesystem\n"
 281                                 "Aborting ...", i, fs->super->s_first_data_block, must_be_good);
 282                 }
 283         }
 284
 285         /*
 286          * See if any of the bad blocks are showing up in the backup
 287          * superblocks and/or group descriptors.  If so, issue a
 288          * warning and adjust the block counts appropriately.
 289          */
 290         group_block = fs->super->s_first_data_block +
 291                 fs->super->s_blocks_per_group;
 292
 293         for (i = 1; i < fs->group_desc_count; i++) {
 294                 group_bad = 0;
 295                 for (j=0; j < fs->desc_blocks+1; j++) {
 296                         if (ext2fs_badblocks_list_test(bb_list,
 297                                                        group_block + j)) {
 298                                 mke2fs_warning_msg(!group_bad,
 299                                         "the backup superblock/group descriptors at block %d contain\n"
 300                                         "bad blocks\n", group_block);
 301                                 group_bad++;
 302                                 group = ext2fs_group_of_blk(fs, group_block+j);
 303                                 fs->group_desc[group].bg_free_blocks_count++;
 304                                 fs->super->s_free_blocks_count++;
 305                         }
 306                 }
 307                 group_block += fs->super->s_blocks_per_group;
 308         }
 309
 310         /*
 311          * Mark all the bad blocks as used...
 312          */
 313         retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
 314         mke2fs_error_msg_and_die(retval, "mark bad blocks as used");
 315
 316         while (ext2fs_badblocks_list_iterate(bb_iter, &blk))
 317                 ext2fs_mark_block_bitmap(fs->block_map, blk);
 318         ext2fs_badblocks_list_iterate_end(bb_iter);
 319 }
 320
 321 /*
 322  * These functions implement a generalized progress meter.
 323  */
 324 struct progress_struct {
 325         char            format[20];
 326         char            backup[80];
 327         __u32           max;
 328         int             skip_progress;
 329 };
 330
 331 static void progress_init(struct progress_struct *progress,
 332                           const char *label,__u32 max)
 333 {
 334         int     i;
 335
 336         memset(progress, 0, sizeof(struct progress_struct));
 337         if (quiet)
 338                 return;
 339
 340         /*
 341          * Figure out how many digits we need
 342          */
 343         i = int_log10(max);
 344         sprintf(progress->format, "%%%dd/%%%dld", i, i);
 345         memset(progress->backup, '\b', sizeof(progress->backup)-1);
 346         progress->backup[sizeof(progress->backup)-1] = 0;
 347         if ((2*i)+1 < (int) sizeof(progress->backup))
 348                 progress->backup[(2*i)+1] = 0;
 349         progress->max = max;
 350
 351         progress->skip_progress = 0;
 352         if (getenv("MKE2FS_SKIP_PROGRESS"))
 353                 progress->skip_progress++;
 354
 355         fputs(label, stdout);
 356         fflush(stdout);
 357 }
 358
 359 static void progress_update(struct progress_struct *progress, __u32 val)
 360 {
 361         if ((progress->format[0] == 0) || progress->skip_progress)
 362                 return;
 363         printf(progress->format, val, progress->max);
 364         fputs(progress->backup, stdout);
 365 }
 366
 367 static void progress_close(struct progress_struct *progress)
 368 {
 369         if (progress->format[0] == 0)
 370                 return;
 371         printf("%-28s\n", "done");
 372 }
 373
 374
 375 /*
 376  * Helper function which zeros out _num_ blocks starting at _blk_.  In
 377  * case of an error, the details of the error is returned via _ret_blk_
 378  * and _ret_count_ if they are non-NULL pointers.  Returns 0 on
 379  * success, and an error code on an error.
 380  *
 381  * As a special case, if the first argument is NULL, then it will
 382  * attempt to free the static zeroizing buffer.  (This is to keep
 383  * programs that check for memory leaks happy.)
 384  */
 385 static errcode_t zero_blocks(ext2_filsys fs, blk_t blk, int num,
 386                              struct progress_struct *progress,
 387                              blk_t *ret_blk, int *ret_count)
 388 {
 389         int             j, count, next_update, next_update_incr;
 390         static char     *buf;
 391         errcode_t       retval;
 392
 393         /* If fs is null, clean up the static buffer and return */
 394         if (!fs) {
 395                 if (buf) {
 396                         free(buf);
 397                         buf = 0;
 398                 }
 399                 return 0;
 400         }
 401         /* Allocate the zeroizing buffer if necessary */
 402         if (!buf) {
 403                 buf = xcalloc(fs->blocksize, STRIDE_LENGTH);
 404         }
 405         /* OK, do the write loop */
 406         next_update = 0;
 407         next_update_incr = num / 100;
 408         if (next_update_incr < 1)
 409                 next_update_incr = 1;
 410         for (j=0; j < num; j += STRIDE_LENGTH, blk += STRIDE_LENGTH) {
 411                 count = num - j;
 412                 if (count > STRIDE_LENGTH)
 413                         count = STRIDE_LENGTH;
 414                 retval = io_channel_write_blk(fs->io, blk, count, buf);
 415                 if (retval) {
 416                         if (ret_count)
 417                                 *ret_count = count;
 418                         if (ret_blk)
 419                                 *ret_blk = blk;
 420                         return retval;
 421                 }
 422                 if (progress && j > next_update) {
 423                         next_update += num / 100;
 424                         progress_update(progress, blk);
 425                 }
 426         }
 427         return 0;
 428 }
 429
 430 static void write_inode_tables(ext2_filsys fs)
 431 {
 432         errcode_t       retval;
 433         blk_t           blk;
 434         dgrp_t          i;
 435         int             num;
 436         struct progress_struct progress;
 437
 438         if (quiet)
 439                 memset(&progress, 0, sizeof(progress));
 440         else
 441                 progress_init(&progress, "Writing inode tables: ",
 442                               fs->group_desc_count);
 443
 444         for (i = 0; i < fs->group_desc_count; i++) {
 445                 progress_update(&progress, i);
 446
 447                 blk = fs->group_desc[i].bg_inode_table;
 448                 num = fs->inode_blocks_per_group;
 449
 450                 retval = zero_blocks(fs, blk, num, 0, &blk, &num);
 451                 mke2fs_error_msg_and_die(retval,
 452                         "write %d blocks in inode table starting at %d.",
 453                         num, blk);
 454                 if (sync_kludge) {
 455                         if (sync_kludge == 1)
 456                                 sync();
 457                         else if ((i % sync_kludge) == 0)
 458                                 sync();
 459                 }
 460         }
 461         zero_blocks(0, 0, 0, 0, 0, 0);
 462         progress_close(&progress);
 463 }
 464
 465 static void create_root_dir(ext2_filsys fs)
 466 {
 467         errcode_t               retval;
 468         struct ext2_inode       inode;
 469
 470         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0);
 471         mke2fs_error_msg_and_die(retval, "create root dir");
 472         if (geteuid()) {
 473                 retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode);
 474                 mke2fs_error_msg_and_die(retval, "read root inode");
 475                 inode.i_uid = getuid();
 476                 if (inode.i_uid)
 477                         inode.i_gid = getgid();
 478                 retval = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode);
 479                 mke2fs_error_msg_and_die(retval, "set root inode ownership");
 480         }
 481 }
 482
 483 static void create_lost_and_found(ext2_filsys fs)
 484 {
 485         errcode_t               retval;
 486         ext2_ino_t              ino;
 487         const char              *name = "lost+found";
 488         int                     i = 1;
 489         char                    *msg = "create";
 490         int                     lpf_size = 0;
 491
 492         fs->umask = 077;
 493         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name);
 494         if (retval) {
 495                 goto CREATE_LOST_AND_FOUND_ERROR;
 496         }
 497
 498         retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
 499         if (retval) {
 500                 msg = "lookup";
 501                 goto CREATE_LOST_AND_FOUND_ERROR;
 502         }
 503
 504         for (; i < EXT2_NDIR_BLOCKS; i++) {
 505                 if ((lpf_size += fs->blocksize) >= 16*1024)
 506                         break;
 507                 retval = ext2fs_expand_dir(fs, ino);
 508                 msg = "expand";
 509 CREATE_LOST_AND_FOUND_ERROR:
 510                 mke2fs_error_msg_and_die(retval, "%s %s", msg, name);
 511         }
 512 }
 513
 514 static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list)
 515 {
 516         errcode_t       retval;
 517
 518         ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO);
 519         fs->group_desc[0].bg_free_inodes_count--;
 520         fs->super->s_free_inodes_count--;
 521         retval = ext2fs_update_bb_inode(fs, bb_list);
 522         mke2fs_error_msg_and_die(retval, "set bad block inode");
 523 }
 524
 525 static void reserve_inodes(ext2_filsys fs)
 526 {
 527         ext2_ino_t      i;
 528         int             group;
 529
 530         for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++) {
 531                 ext2fs_mark_inode_bitmap(fs->inode_map, i);
 532                 group = ext2fs_group_of_ino(fs, i);
 533                 fs->group_desc[group].bg_free_inodes_count--;
 534                 fs->super->s_free_inodes_count--;
 535         }
 536         ext2fs_mark_ib_dirty(fs);
 537 }
 538
 539 #define BSD_DISKMAGIC   (0x82564557UL)  /* The disk magic number */
 540 #define BSD_MAGICDISK   (0x57455682UL)  /* The disk magic number reversed */
 541 #define BSD_LABEL_OFFSET        64
 542
 543 static void zap_sector(ext2_filsys fs, int sect, int nsect)
 544 {
 545         char *buf;
 546         char *fmt = "could not %s %d";
 547         int retval;
 548         unsigned int *magic;
 549
 550         buf = xmalloc(512*nsect);
 551
 552         if (sect == 0) {
 553                 /* Check for a BSD disklabel, and don't erase it if so */
 554                 retval = io_channel_read_blk(fs->io, 0, -512, buf);
 555                 if (retval)
 556                         mke2fs_warning_msg(retval, fmt, "read block", 0);
 557                 else {
 558                         magic = (unsigned int *) (buf + BSD_LABEL_OFFSET);
 559                         if ((*magic == BSD_DISKMAGIC) ||
 560                             (*magic == BSD_MAGICDISK))
 561                                 return;
 562                 }
 563         }
 564
 565         memset(buf, 0, 512*nsect);
 566         io_channel_set_blksize(fs->io, 512);
 567         retval = io_channel_write_blk(fs->io, sect, -512*nsect, buf);
 568         io_channel_set_blksize(fs->io, fs->blocksize);
 569         free(buf);
 570         mke2fs_warning_msg(retval, fmt, "erase sector", sect);
 571 }
 572
 573 static void create_journal_dev(ext2_filsys fs)
 574 {
 575         struct progress_struct  progress;
 576         errcode_t               retval;
 577         char                    *buf;
 578         char                    *fmt = "%s journal superblock";
 579         blk_t                   blk;
 580         int                     count;
 581
 582         retval = ext2fs_create_journal_superblock(fs,
 583                                   fs->super->s_blocks_count, 0, &buf);
 584         mke2fs_error_msg_and_die(retval, fmt, "init");
 585         if (quiet)
 586                 memset(&progress, 0, sizeof(progress));
 587         else
 588                 progress_init(&progress, "Zeroing journal device: ",
 589                               fs->super->s_blocks_count);
 590
 591         retval = zero_blocks(fs, 0, fs->super->s_blocks_count,
 592                              &progress, &blk, &count);
 593         mke2fs_error_msg_and_die(retval, "zero journal device (block %u, count %d)",
 594                         blk, count);
 595         zero_blocks(0, 0, 0, 0, 0, 0);
 596
 597         retval = io_channel_write_blk(fs->io,
 598                                       fs->super->s_first_data_block+1,
 599                                       1, buf);
 600         mke2fs_error_msg_and_die(retval, fmt, "write");
 601         progress_close(&progress);
 602 }
 603
 604 static void show_stats(ext2_filsys fs)
 605 {
 606         struct ext2_super_block *s = fs->super;
 607         char                    *os;
 608         blk_t                   group_block;
 609         dgrp_t                  i;
 610         int                     need, col_left;
 611
 612         mke2fs_warning_msg((param.s_blocks_count != s->s_blocks_count),
 613                 "%d blocks unused\n", param.s_blocks_count - s->s_blocks_count);
 614         os = e2p_os2string(fs->super->s_creator_os);
 615         printf( "Filesystem label=%.*s\n"
 616                         "OS type: %s\n"
 617                         "Block size=%u (log=%u)\n"
 618                         "Fragment size=%u (log=%u)\n"
 619                         "%u inodes, %u blocks\n"
 620                         "%u blocks (%2.2f%%) reserved for the super user\n"
 621                         "First data block=%u\n",
 622                         (int) sizeof(s->s_volume_name),
 623                         s->s_volume_name,
 624                         os,
 625                         fs->blocksize, s->s_log_block_size,
 626                         fs->fragsize, s->s_log_frag_size,
 627                         s->s_inodes_count, s->s_blocks_count,
 628                         s->s_r_blocks_count, 100.0 * s->s_r_blocks_count / s->s_blocks_count,
 629                         s->s_first_data_block);
 630         free(os);
 631         if (s->s_reserved_gdt_blocks) {
 632                 printf("Maximum filesystem blocks=%lu\n",
 633                        (s->s_reserved_gdt_blocks + fs->desc_blocks) *
 634                        (fs->blocksize / sizeof(struct ext2_group_desc)) *
 635                        s->s_blocks_per_group);
 636         }
 637         printf( "%u block group%s\n"
 638                         "%u blocks per group, %u fragments per group\n"
 639                         "%u inodes per group\n",
 640                         fs->group_desc_count, (fs->group_desc_count > 1) ? "s" : "",
 641                         s->s_blocks_per_group, s->s_frags_per_group,
 642                         s->s_inodes_per_group);
 643         if (fs->group_desc_count == 1) {
 644                 puts("");
 645                 return;
 646         }
 647
 648         printf("Superblock backups stored on blocks: ");
 649         group_block = s->s_first_data_block;
 650         col_left = 0;
 651         for (i = 1; i < fs->group_desc_count; i++) {
 652                 group_block += s->s_blocks_per_group;
 653                 if (!ext2fs_bg_has_super(fs, i))
 654                         continue;
 655                 if (i != 1)
 656                         printf(", ");
 657                 need = int_log10(group_block) + 2;
 658                 if (need > col_left) {
 659                         printf("\n\t");
 660                         col_left = 72;
 661                 }
 662                 col_left -= need;
 663                 printf("%u", group_block);
 664         }
 665         puts("\n");
 666 }
 667
 668 /*
 669  * Set the S_CREATOR_OS field.  Return true if OS is known,
 670  * otherwise, 0.
 671  */
 672 static int set_os(struct ext2_super_block *sb, char *os)
 673 {
 674         if (isdigit (*os)) {
 675                 sb->s_creator_os = atoi (os);
 676                 return 1;
 677         }
 678
 679         if((sb->s_creator_os = e2p_string2os(os)) >= 0) {
 680                 return 1;
 681         } else if (!strcasecmp("GNU", os)) {
 682                 sb->s_creator_os = EXT2_OS_HURD;
 683                 return 1;
 684         }
 685         return 0;
 686 }
 687
 688 static void parse_extended_opts(struct ext2_super_block *sb_param,
 689                                 const char *opts)
 690 {
 691         char    *buf, *token, *next, *p, *arg;
 692         int     r_usage = 0;
 693
 694         buf = bb_xstrdup(opts);
 695         for (token = buf; token && *token; token = next) {
 696                 p = strchr(token, ',');
 697                 next = 0;
 698                 if (p) {
 699                         *p = 0;
 700                         next = p+1;
 701                 }
 702                 arg = strchr(token, '=');
 703                 if (arg) {
 704                         *arg = 0;
 705                         arg++;
 706                 }
 707                 if (strcmp(token, "stride") == 0) {
 708                         if (!arg) {
 709                                 r_usage++;
 710                                 continue;
 711                         }
 712                         fs_stride = strtoul(arg, &p, 0);
 713                         if (*p || (fs_stride == 0)) {
 714                                 bb_error_msg("Invalid stride parameter");
 715                                 r_usage++;
 716                                 continue;
 717                         }
 718                 } else if (!strcmp(token, "resize")) {
 719                         unsigned long resize, bpg, rsv_groups;
 720                         unsigned long group_desc_count, desc_blocks;
 721                         unsigned int gdpb, blocksize;
 722                         int rsv_gdb;
 723
 724                         if (!arg) {
 725                                 r_usage++;
 726                                 continue;
 727                         }
 728
 729                         resize = parse_num_blocks(arg,
 730                                                   sb_param->s_log_block_size);
 731
 732                         if (resize == 0) {
 733                                 bb_error_msg("Invalid resize parameter: %s", arg);
 734                                 r_usage++;
 735                                 continue;
 736                         }
 737                         if (resize <= sb_param->s_blocks_count) {
 738                                 bb_error_msg("The resize maximum must be greater than the filesystem size");
 739                                 r_usage++;
 740                                 continue;
 741                         }
 742
 743                         blocksize = EXT2_BLOCK_SIZE(sb_param);
 744                         bpg = sb_param->s_blocks_per_group;
 745                         if (!bpg)
 746                                 bpg = blocksize * 8;
 747                         gdpb = blocksize / sizeof(struct ext2_group_desc);
 748                         group_desc_count = (sb_param->s_blocks_count +
 749                                             bpg - 1) / bpg;
 750                         desc_blocks = (group_desc_count +
 751                                        gdpb - 1) / gdpb;
 752                         rsv_groups = (resize + bpg - 1) / bpg;
 753                         rsv_gdb = (rsv_groups + gdpb - 1) / gdpb -
 754                                 desc_blocks;
 755                         if (rsv_gdb > EXT2_ADDR_PER_BLOCK(sb_param))
 756                                 rsv_gdb = EXT2_ADDR_PER_BLOCK(sb_param);
 757
 758                         if (rsv_gdb > 0) {
 759                                 sb_param->s_feature_compat |=
 760                                         EXT2_FEATURE_COMPAT_RESIZE_INODE;
 761
 762                                 sb_param->s_reserved_gdt_blocks = rsv_gdb;
 763                         }
 764                 } else
 765                         r_usage++;
 766         }
 767         if (r_usage) {
 768                 bb_error_msg_and_die(
 769                         "\nBad options specified.\n\n"
 770                         "Options are separated by commas, "
 771                         "and may take an argument which\n"
 772                         "\tis set off by an equals ('=') sign.\n\n"
 773                         "Valid raid options are:\n"
 774                         "\tstride=<stride length in blocks>\n"
 775                         "\tresize=<resize maximum size in blocks>\n");
 776         }
 777 }
 778
 779 static __u32 ok_features[3] = {
 780         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 781                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 782                 EXT2_FEATURE_COMPAT_DIR_INDEX,  /* Compat */
 783         EXT2_FEATURE_INCOMPAT_FILETYPE|         /* Incompat */
 784                 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|
 785                 EXT2_FEATURE_INCOMPAT_META_BG,
 786         EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER     /* R/O compat */
 787 };
 788
 789 static int PRS(int argc, char *argv[])
 790 {
 791         int             b, c;
 792         int             size;
 793         char *          tmp;
 794         int             blocksize = 0;
 795         int             inode_ratio = 0;
 796         int             inode_size = 0;
 797         int             reserved_ratio = 5;
 798         int             sector_size = 0;
 799         int             show_version_only = 0;
 800         ext2_ino_t      num_inodes = 0;
 801         errcode_t       retval;
 802         char *          extended_opts = 0;
 803         const char *    fs_type = 0;
 804         blk_t           dev_size;
 805         long            sysval;
 806
 807         /* Update our PATH to include /sbin  */
 808         e2fs_set_sbin_path();
 809
 810         tmp = getenv("MKE2FS_SYNC");
 811         if (tmp)
 812                 sync_kludge = atoi(tmp);
 813
 814         /* Determine the system page size if possible */
 815 #if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE))
 816 #define _SC_PAGESIZE _SC_PAGE_SIZE
 817 #endif
 818 #ifdef _SC_PAGESIZE
 819         sysval = sysconf(_SC_PAGESIZE);
 820         if (sysval > 0)
 821                 sys_page_size = sysval;
 822 #endif /* _SC_PAGESIZE */
 823
 824         setbuf(stdout, NULL);
 825         setbuf(stderr, NULL);
 826         memset(&param, 0, sizeof(struct ext2_super_block));
 827         param.s_rev_level = 1;  /* Create revision 1 filesystems now */
 828         param.s_feature_incompat |= EXT2_FEATURE_INCOMPAT_FILETYPE;
 829         param.s_feature_ro_compat |= EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
 830 #if 0
 831         param.s_feature_compat |= EXT2_FEATURE_COMPAT_DIR_INDEX;
 832 #endif
 833
 834 #ifdef __linux__
 835         linux_version_code = get_kernel_revision();
 836         if (linux_version_code && linux_version_code < (2*65536 + 2*256)) {
 837                 param.s_rev_level = 0;
 838                 param.s_feature_incompat = 0;
 839                 param.s_feature_compat = 0;
 840                 param.s_feature_ro_compat = 0;
 841         }
 842 #endif
 843
 844         /* If called as mkfs.ext3, create a journal inode */
 845         if (last_char_is(bb_applet_name, '3'))
 846                 journal_size = -1;
 847
 848         while ((c = getopt (argc, argv,
 849                     "b:cE:f:g:i:jl:m:no:qr:R:s:tvI:J:ST:FL:M:N:O:V")) != EOF) {
 850                 switch (c) {
 851                 case 'b':
 852                         if (safe_strtoi(optarg, &blocksize))
 853                                 goto BLOCKSIZE_ERROR;
 854                         b = (blocksize > 0) ? blocksize : -blocksize;
 855                         if (b < EXT2_MIN_BLOCK_SIZE ||
 856                             b > EXT2_MAX_BLOCK_SIZE) {
 857 BLOCKSIZE_ERROR:
 858                                 bb_error_msg_and_die("bad block size - %s", optarg);
 859                         }
 860                         mke2fs_warning_msg((blocksize > 4096),
 861                                 "blocksize %d not usable on most systems",
 862                                 blocksize);
 863                         if (blocksize > 0)
 864                                 param.s_log_block_size =
 865                                         int_log2(blocksize >>
 866                                                  EXT2_MIN_BLOCK_LOG_SIZE);
 867                         break;
 868                 case 'c':       /* Check for bad blocks */
 869                 case 't':       /* deprecated */
 870                         cflag++;
 871                         break;
 872                 case 'f':
 873                         if (safe_strtoi(optarg, &size) || size < EXT2_MIN_BLOCK_SIZE || size > EXT2_MAX_BLOCK_SIZE ){
 874                                 bb_error_msg_and_die("bad fragment size - %s", optarg);
 875                         }
 876                         param.s_log_frag_size =
 877                                 int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE);
 878                         mke2fs_warning_msg(1, "fragments not supported. Ignoring -f option");
 879                         break;
 880                 case 'g':
 881                         if (safe_strtoi(optarg, &param.s_blocks_per_group)) {
 882                                 bb_error_msg_and_die("Illegal number for blocks per group");
 883                         }
 884                         if ((param.s_blocks_per_group % 8) != 0) {
 885                                 bb_error_msg_and_die("blocks per group must be multiple of 8");
 886                         }
 887                         break;
 888                 case 'i':
 889                         if (safe_strtoi(optarg, &inode_ratio)
 890                                 || inode_ratio < EXT2_MIN_BLOCK_SIZE
 891                                 || inode_ratio > EXT2_MAX_BLOCK_SIZE * 1024) {
 892                                 bb_error_msg_and_die("bad inode ratio %s (min %d/max %d)",
 893                                         optarg, EXT2_MIN_BLOCK_SIZE,
 894                                         EXT2_MAX_BLOCK_SIZE);
 895                                 }
 896                         break;
 897                 case 'J':
 898                         parse_journal_opts(&journal_device, &journal_flags, &journal_size, optarg);
 899                         break;
 900                 case 'j':
 901                         param.s_feature_compat |=
 902                                 EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 903                         if (!journal_size)
 904                                 journal_size = -1;
 905                         break;
 906                 case 'l':
 907                         bad_blocks_filename = optarg;
 908                         break;
 909                 case 'm':
 910                         if (safe_strtoi(optarg, &reserved_ratio) || reserved_ratio > 50 ) {
 911                                 bb_error_msg_and_die("bad reserved blocks percent - %s", optarg);
 912                         }
 913                         break;
 914                 case 'n':
 915                         noaction++;
 916                         break;
 917                 case 'o':
 918                         creator_os = optarg;
 919                         break;
 920                 case 'r':
 921                         param.s_rev_level = atoi(optarg);
 922                         if (param.s_rev_level == EXT2_GOOD_OLD_REV) {
 923                                 param.s_feature_incompat = 0;
 924                                 param.s_feature_compat = 0;
 925                                 param.s_feature_ro_compat = 0;
 926                         }
 927                         break;
 928                 case 's':       /* deprecated */
 929                         if (atoi(optarg))
 930                                 param.s_feature_ro_compat |=
 931                                         EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
 932                         else
 933                                 param.s_feature_ro_compat &=
 934                                         ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
 935                         break;
 936 #ifdef EXT2_DYNAMIC_REV
 937                 case 'I':
 938                         if (safe_strtoi(optarg, &inode_size)) {
 939                                 bb_error_msg_and_die("bad inode size - %s", optarg);
 940                         }
 941                         break;
 942 #endif
 943                 case 'N':
 944                         num_inodes = atoi(optarg);
 945                         break;
 946                 case 'v':
 947                         quiet = 0;
 948                         break;
 949                 case 'q':
 950                         quiet = 1;
 951                         break;
 952                 case 'F':
 953                         force = 1;
 954                         break;
 955                 case 'L':
 956                         volume_label = optarg;
 957                         break;
 958                 case 'M':
 959                         mount_dir = optarg;
 960                         break;
 961                 case 'O':
 962                         if (!strcmp(optarg, "none")) {
 963                                 param.s_feature_compat = 0;
 964                                 param.s_feature_incompat = 0;
 965                                 param.s_feature_ro_compat = 0;
 966                                 break;
 967                         }
 968                         if (e2p_edit_feature(optarg,
 969                                             &param.s_feature_compat,
 970                                             ok_features)) {
 971                                 bb_error_msg_and_die("Invalid filesystem option set: %s", optarg);
 972                         }
 973                         break;
 974                 case 'E':
 975                 case 'R':
 976                         extended_opts = optarg;
 977                         break;
 978                 case 'S':
 979                         super_only = 1;
 980                         break;
 981                 case 'T':
 982                         fs_type = optarg;
 983                         break;
 984                 case 'V':
 985                         /* Print version number and exit */
 986                         show_version_only = 1;
 987                         quiet = 0;
 988                         break;
 989                 default:
 990                         bb_show_usage();
 991                 }
 992         }
 993         if ((optind == argc) /*&& !show_version_only*/)
 994                 bb_show_usage();
 995         device_name = argv[optind++];
 996
 997         mke2fs_verbose("mke2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
 998
 999         if (show_version_only) {
1000                 return 0;
1001         }
1002
1003         /*
1004          * If there's no blocksize specified and there is a journal
1005          * device, use it to figure out the blocksize
1006          */
1007         if (blocksize <= 0 && journal_device) {
1008                 ext2_filsys     jfs;
1009                 io_manager      io_ptr;
1010
1011 #ifdef CONFIG_TESTIO_DEBUG
1012                 io_ptr = test_io_manager;
1013                 test_io_backing_manager = unix_io_manager;
1014 #else
1015                 io_ptr = unix_io_manager;
1016 #endif
1017                 retval = ext2fs_open(journal_device,
1018                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1019                                      0, io_ptr, &jfs);
1020                 mke2fs_error_msg_and_die(retval, "open journal device %s", journal_device);
1021                 if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) {
1022                         bb_error_msg_and_die(
1023                                 "Journal dev blocksize (%d) smaller than "
1024                                 "minimum blocksize %d\n", jfs->blocksize,
1025                                 -blocksize);
1026                 }
1027                 blocksize = jfs->blocksize;
1028                 param.s_log_block_size =
1029                         int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
1030                 ext2fs_close(jfs);
1031         }
1032
1033         if (blocksize > sys_page_size) {
1034                 mke2fs_warning_msg(1, "%d-byte blocks too big for system (max %d)",
1035                         blocksize, sys_page_size);
1036                 if (!force) {
1037                         proceed_question();
1038                 }
1039                 bb_error_msg("Forced to continue");
1040         }
1041         mke2fs_warning_msg(((blocksize > 4096) &&
1042                 (param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)),
1043                 "some 2.4 kernels do not support "
1044                 "blocksizes greater than 4096 using ext3.\n"
1045                 "Use -b 4096 if this is an issue for you\n");
1046
1047         if (optind < argc) {
1048                 param.s_blocks_count = parse_num_blocks(argv[optind++],
1049                                 param.s_log_block_size);
1050                 mke2fs_error_msg_and_die(!param.s_blocks_count, "bad blocks count - %s", argv[optind - 1]);
1051         }
1052         if (optind < argc)
1053                 bb_show_usage();
1054
1055         if (param.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
1056                 if (!fs_type)
1057                         fs_type = "journal";
1058                 reserved_ratio = 0;
1059                 param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV;
1060                 param.s_feature_compat = 0;
1061                 param.s_feature_ro_compat = 0;
1062         }
1063         if (param.s_rev_level == EXT2_GOOD_OLD_REV &&
1064             (param.s_feature_compat || param.s_feature_ro_compat ||
1065              param.s_feature_incompat))
1066                 param.s_rev_level = 1;  /* Create a revision 1 filesystem */
1067
1068         check_plausibility(device_name , force);
1069         check_mount(device_name, force, "filesystem");
1070
1071         param.s_log_frag_size = param.s_log_block_size;
1072
1073         if (noaction && param.s_blocks_count) {
1074                 dev_size = param.s_blocks_count;
1075                 retval = 0;
1076         } else {
1077         retry:
1078                 retval = ext2fs_get_device_size(device_name,
1079                                                 EXT2_BLOCK_SIZE(&param),
1080                                                 &dev_size);
1081                 if ((retval == EFBIG) &&
1082                     (blocksize == 0) &&
1083                     (param.s_log_block_size == 0)) {
1084                         param.s_log_block_size = 2;
1085                         blocksize = 4096;
1086                         goto retry;
1087                 }
1088         }
1089
1090         mke2fs_error_msg_and_die((retval && (retval != EXT2_ET_UNIMPLEMENTED)),"determine filesystem size");
1091
1092         if (!param.s_blocks_count) {
1093                 if (retval == EXT2_ET_UNIMPLEMENTED) {
1094                         mke2fs_error_msg_and_die(1,
1095                                 "determine device size; you "
1096                                 "must specify\nthe size of the "
1097                                 "filesystem");
1098                 } else {
1099                         if (dev_size == 0) {
1100                                 bb_error_msg_and_die(
1101                                         "Device size reported to be zero.  "
1102                                         "Invalid partition specified, or\n\t"
1103                                         "partition table wasn't reread "
1104                                         "after running fdisk, due to\n\t"
1105                                         "a modified partition being busy "
1106                                         "and in use.  You may need to reboot\n\t"
1107                                         "to re-read your partition table.\n"
1108                                 );
1109                         }
1110                         param.s_blocks_count = dev_size;
1111                         if (sys_page_size > EXT2_BLOCK_SIZE(&param))
1112                                 param.s_blocks_count &= ~((sys_page_size /
1113                                                            EXT2_BLOCK_SIZE(&param))-1);
1114                 }
1115
1116         } else if (!force && (param.s_blocks_count > dev_size)) {
1117                 bb_error_msg("Filesystem larger than apparent device size");
1118                 proceed_question();
1119         }
1120
1121         /*
1122          * If the user asked for HAS_JOURNAL, then make sure a journal
1123          * gets created.
1124          */
1125         if ((param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
1126             !journal_size)
1127                 journal_size = -1;
1128
1129         /* Set first meta blockgroup via an environment variable */
1130         /* (this is mostly for debugging purposes) */
1131         if ((param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) &&
1132             ((tmp = getenv("MKE2FS_FIRST_META_BG"))))
1133                 param.s_first_meta_bg = atoi(tmp);
1134
1135         /* Get the hardware sector size, if available */
1136         retval = ext2fs_get_device_sectsize(device_name, &sector_size);
1137         mke2fs_error_msg_and_die(retval, "determine hardware sector size");
1138
1139         if ((tmp = getenv("MKE2FS_DEVICE_SECTSIZE")) != NULL)
1140                 sector_size = atoi(tmp);
1141
1142         set_fs_defaults(fs_type, &param, blocksize, sector_size, &inode_ratio);
1143         blocksize = EXT2_BLOCK_SIZE(&param);
1144
1145         if (extended_opts)
1146                 parse_extended_opts(&param, extended_opts);
1147
1148         /* Since sparse_super is the default, we would only have a problem
1149          * here if it was explicitly disabled.
1150          */
1151         if ((param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE) &&
1152             !(param.s_feature_ro_compat&EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1153                 bb_error_msg_and_die("reserved online resize blocks not supported "
1154                           "on non-sparse filesystem");
1155         }
1156
1157         if (param.s_blocks_per_group) {
1158                 if (param.s_blocks_per_group < 256 ||
1159                     param.s_blocks_per_group > 8 * (unsigned) blocksize) {
1160                         bb_error_msg_and_die("blocks per group count out of range");
1161                 }
1162         }
1163
1164         if (inode_size) {
1165                 if (inode_size < EXT2_GOOD_OLD_INODE_SIZE ||
1166                     inode_size > EXT2_BLOCK_SIZE(&param) ||
1167                     inode_size & (inode_size - 1)) {
1168                         bb_error_msg_and_die("bad inode size %d (min %d/max %d)",
1169                                 inode_size, EXT2_GOOD_OLD_INODE_SIZE,
1170                                 blocksize);
1171                 }
1172                 mke2fs_warning_msg((inode_size != EXT2_GOOD_OLD_INODE_SIZE),
1173                         "%d-byte inodes not usable on most systems",
1174                         inode_size);
1175                 param.s_inode_size = inode_size;
1176         }
1177
1178         /*
1179          * Calculate number of inodes based on the inode ratio
1180          */
1181         param.s_inodes_count = num_inodes ? num_inodes :
1182                 ((__u64) param.s_blocks_count * blocksize)
1183                         / inode_ratio;
1184
1185         /*
1186          * Calculate number of blocks to reserve
1187          */
1188         param.s_r_blocks_count = (param.s_blocks_count * reserved_ratio) / 100;
1189         return 1;
1190 }
1191
1192 static void clean_up(void)
1193 {
1194         if (ENABLE_FEATURE_CLEAN_UP && journal_device) free(journal_device);
1195 }
1196
1197 int mke2fs_main (int argc, char *argv[])
1198 {
1199         errcode_t       retval;
1200         ext2_filsys     fs;
1201         badblocks_list  bb_list = 0;
1202         unsigned int    i;
1203         int             val;
1204         io_manager      io_ptr;
1205
1206         if (ENABLE_FEATURE_CLEAN_UP)
1207                 atexit(clean_up);
1208         if(!PRS(argc, argv))
1209                 return 0;
1210
1211 #ifdef CONFIG_TESTIO_DEBUG
1212         io_ptr = test_io_manager;
1213         test_io_backing_manager = unix_io_manager;
1214 #else
1215         io_ptr = unix_io_manager;
1216 #endif
1217
1218         /*
1219          * Initialize the superblock....
1220          */
1221         retval = ext2fs_initialize(device_name, 0, &param,
1222                                    io_ptr, &fs);
1223         mke2fs_error_msg_and_die(retval, "set up superblock");
1224
1225         /*
1226          * Wipe out the old on-disk superblock
1227          */
1228         if (!noaction)
1229                 zap_sector(fs, 2, 6);
1230
1231         /*
1232          * Generate a UUID for it...
1233          */
1234         uuid_generate(fs->super->s_uuid);
1235
1236         /*
1237          * Initialize the directory index variables
1238          */
1239         fs->super->s_def_hash_version = EXT2_HASH_TEA;
1240         uuid_generate((unsigned char *) fs->super->s_hash_seed);
1241
1242         /*
1243          * Add "jitter" to the superblock's check interval so that we
1244          * don't check all the filesystems at the same time.  We use a
1245          * kludgy hack of using the UUID to derive a random jitter value.
1246          */
1247         for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++)
1248                 val += fs->super->s_uuid[i];
1249         fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT;
1250
1251         /*
1252          * Override the creator OS, if applicable
1253          */
1254         if (creator_os && !set_os(fs->super, creator_os)) {
1255                 bb_error_msg_and_die("unknown os - %s", creator_os);
1256         }
1257
1258         /*
1259          * For the Hurd, we will turn off filetype since it doesn't
1260          * support it.
1261          */
1262         if (fs->super->s_creator_os == EXT2_OS_HURD)
1263                 fs->super->s_feature_incompat &=
1264                         ~EXT2_FEATURE_INCOMPAT_FILETYPE;
1265
1266         /*
1267          * Set the volume label...
1268          */
1269         if (volume_label) {
1270                 snprintf(fs->super->s_volume_name, sizeof(fs->super->s_volume_name), "%s", volume_label);
1271         }
1272
1273         /*
1274          * Set the last mount directory
1275          */
1276         if (mount_dir) {
1277                 snprintf(fs->super->s_last_mounted, sizeof(fs->super->s_last_mounted), "%s", mount_dir);
1278         }
1279
1280         if (!quiet || noaction)
1281                 show_stats(fs);
1282
1283         if (noaction)
1284                 return 0;
1285
1286         if (fs->super->s_feature_incompat &
1287             EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
1288                 create_journal_dev(fs);
1289                 return (ext2fs_close(fs) ? 1 : 0);
1290         }
1291
1292         if (bad_blocks_filename)
1293                 read_bb_file(fs, &bb_list, bad_blocks_filename);
1294         if (cflag)
1295                 test_disk(fs, &bb_list);
1296
1297         handle_bad_blocks(fs, bb_list);
1298         fs->stride = fs_stride;
1299         retval = ext2fs_allocate_tables(fs);
1300         mke2fs_error_msg_and_die(retval, "allocate filesystem tables");
1301         if (super_only) {
1302                 fs->super->s_state |= EXT2_ERROR_FS;
1303                 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY);
1304         } else {
1305                 /* rsv must be a power of two (64kB is MD RAID sb alignment) */
1306                 unsigned int rsv = 65536 / fs->blocksize;
1307                 unsigned long blocks = fs->super->s_blocks_count;
1308                 unsigned long start;
1309                 blk_t ret_blk;
1310
1311 #ifdef ZAP_BOOTBLOCK
1312                 zap_sector(fs, 0, 2);
1313 #endif
1314
1315                 /*
1316                  * Wipe out any old MD RAID (or other) metadata at the end
1317                  * of the device.  This will also verify that the device is
1318                  * as large as we think.  Be careful with very small devices.
1319                  */
1320                 start = (blocks & ~(rsv - 1));
1321                 if (start > rsv)
1322                         start -= rsv;
1323                 if (start > 0)
1324                         retval = zero_blocks(fs, start, blocks - start,
1325                                              NULL, &ret_blk, NULL);
1326
1327                 mke2fs_warning_msg(retval, "could not zero block %u at end of filesystem", ret_blk);
1328                 write_inode_tables(fs);
1329                 create_root_dir(fs);
1330                 create_lost_and_found(fs);
1331                 reserve_inodes(fs);
1332                 create_bad_block_inode(fs, bb_list);
1333                 if (fs->super->s_feature_compat &
1334                     EXT2_FEATURE_COMPAT_RESIZE_INODE) {
1335                         retval = ext2fs_create_resize_inode(fs);
1336                         mke2fs_error_msg_and_die(retval, "reserve blocks for online resize");
1337                 }
1338         }
1339
1340         if (journal_device) {
1341                 make_journal_device(journal_device, fs, quiet, force);
1342         } else if (journal_size) {
1343                 make_journal_blocks(fs, journal_size, journal_flags, quiet);
1344         }
1345
1346         mke2fs_verbose("Writing superblocks and filesystem accounting information: ");
1347         retval = ext2fs_flush(fs);
1348         mke2fs_warning_msg(retval, "had trouble writing out superblocks");
1349         mke2fs_verbose_done();
1350         if (!quiet && !getenv("MKE2FS_SKIP_CHECK_MSG"))
1351                 print_check_message(fs);
1352         val = ext2fs_close(fs);
1353         return (retval || val) ? 1 : 0;
1354 }