e2fsprogs/old_e2fsprogs/mke2fs.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * mke2fs.c - Make a ext2fs filesystem.
   4  *
   5  * Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
   6  *      2003, 2004, 2005 by Theodore Ts'o.
   7  *
   8  * Licensed under GPLv2, see file LICENSE in this source tree.
   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 }
 167
 168 /*
 169  * Busybox stuff
 170  */
 171 static void mke2fs_error_msg_and_die(int retval, const char *fmt, ...) __attribute__ ((format (printf, 2, 3)));
 172 static void mke2fs_error_msg_and_die(int retval, const char *fmt, ...)
 173 {
 174         va_list ap;
 175
 176         if (retval) {
 177                 va_start(ap, fmt);
 178                 fprintf(stderr, "\nCould not ");
 179                 vfprintf(stderr, fmt, ap);
 180                 fprintf(stderr, "\n");
 181                 va_end(ap);
 182                 exit(EXIT_FAILURE);
 183         }
 184 }
 185
 186 static void mke2fs_verbose(const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
 187 static void mke2fs_verbose(const char *fmt, ...)
 188 {
 189         va_list ap;
 190
 191         if (!quiet) {
 192                 va_start(ap, fmt);
 193                 vfprintf(stdout, fmt, ap);
 194                 fflush(stdout);
 195                 va_end(ap);
 196         }
 197 }
 198
 199 static void mke2fs_verbose_done(void)
 200 {
 201         mke2fs_verbose("done\n");
 202 }
 203
 204 static void mke2fs_warning_msg(int retval, char *fmt, ... ) __attribute__ ((format (printf, 2, 3)));
 205 static void mke2fs_warning_msg(int retval, char *fmt, ... )
 206 {
 207         va_list ap;
 208
 209         if (retval) {
 210                 va_start(ap, fmt);
 211                 fprintf(stderr, "\nWarning: ");
 212                 vfprintf(stderr, fmt, ap);
 213                 fprintf(stderr, "\n");
 214                 va_end(ap);
 215         }
 216 }
 217
 218 /*
 219  * Reads the bad blocks list from a file
 220  */
 221 static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list,
 222                          const char *bad_blocks_file)
 223 {
 224         FILE            *f;
 225         errcode_t       retval;
 226
 227         f = xfopen_for_read(bad_blocks_file);
 228         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 229         fclose (f);
 230         mke2fs_error_msg_and_die(retval, "read bad blocks from list");
 231 }
 232
 233 /*
 234  * Runs the badblocks program to test the disk
 235  */
 236 static void test_disk(ext2_filsys fs, badblocks_list *bb_list)
 237 {
 238         FILE            *f;
 239         errcode_t       retval;
 240         char            buf[1024];
 241
 242         sprintf(buf, "badblocks -b %u %s%s%s %d", fs->blocksize,
 243                 quiet ? "" : "-s ", (cflag > 1) ? "-w " : "",
 244                 fs->device_name, fs->super->s_blocks_count);
 245         mke2fs_verbose("Running command: %s\n", buf);
 246         f = popen(buf, "r");
 247         if (!f) {
 248                 bb_perror_msg_and_die("can't run '%s'", buf);
 249         }
 250         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 251         pclose(f);
 252         mke2fs_error_msg_and_die(retval, "read bad blocks from program");
 253 }
 254
 255 static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list)
 256 {
 257         dgrp_t                  i;
 258         blk_t                   j;
 259         unsigned                must_be_good;
 260         blk_t                   blk;
 261         badblocks_iterate       bb_iter;
 262         errcode_t               retval;
 263         blk_t                   group_block;
 264         int                     group;
 265         int                     group_bad;
 266
 267         if (!bb_list)
 268                 return;
 269
 270         /*
 271          * The primary superblock and group descriptors *must* be
 272          * good; if not, abort.
 273          */
 274         must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks;
 275         for (i = fs->super->s_first_data_block; i <= must_be_good; i++) {
 276                 if (ext2fs_badblocks_list_test(bb_list, i)) {
 277                         bb_error_msg_and_die(
 278                                 "Block %d in primary superblock/group descriptor area bad\n"
 279                                 "Blocks %d through %d must be good in order to build a filesystem\n"
 280                                 "Aborting ...", i, fs->super->s_first_data_block, must_be_good);
 281                 }
 282         }
 283
 284         /*
 285          * See if any of the bad blocks are showing up in the backup
 286          * superblocks and/or group descriptors.  If so, issue a
 287          * warning and adjust the block counts appropriately.
 288          */
 289         group_block = fs->super->s_first_data_block +
 290                 fs->super->s_blocks_per_group;
 291
 292         for (i = 1; i < fs->group_desc_count; i++) {
 293                 group_bad = 0;
 294                 for (j=0; j < fs->desc_blocks+1; j++) {
 295                         if (ext2fs_badblocks_list_test(bb_list,
 296                                                        group_block + j)) {
 297                                 mke2fs_warning_msg(!group_bad,
 298                                         "the backup superblock/group descriptors at block %d contain\n"
 299                                         "bad blocks\n", group_block);
 300                                 group_bad++;
 301                                 group = ext2fs_group_of_blk(fs, group_block+j);
 302                                 fs->group_desc[group].bg_free_blocks_count++;
 303                                 fs->super->s_free_blocks_count++;
 304                         }
 305                 }
 306                 group_block += fs->super->s_blocks_per_group;
 307         }
 308
 309         /*
 310          * Mark all the bad blocks as used...
 311          */
 312         retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
 313         mke2fs_error_msg_and_die(retval, "mark bad blocks as used");
 314
 315         while (ext2fs_badblocks_list_iterate(bb_iter, &blk))
 316                 ext2fs_mark_block_bitmap(fs->block_map, blk);
 317         ext2fs_badblocks_list_iterate_end(bb_iter);
 318 }
 319
 320 /*
 321  * These functions implement a generalized progress meter.
 322  */
 323 struct progress_struct {
 324         char            format[20];
 325         char            backup[80];
 326         __u32           max;
 327         int             skip_progress;
 328 };
 329
 330 static void progress_init(struct progress_struct *progress,
 331                           const char *label,__u32 max)
 332 {
 333         int     i;
 334
 335         memset(progress, 0, sizeof(struct progress_struct));
 336         if (quiet)
 337                 return;
 338
 339         /*
 340          * Figure out how many digits we need
 341          */
 342         i = int_log10(max);
 343         sprintf(progress->format, "%%%dd/%%%dld", i, i);
 344         memset(progress->backup, '\b', sizeof(progress->backup)-1);
 345         progress->backup[sizeof(progress->backup)-1] = 0;
 346         if ((2*i)+1 < (int) sizeof(progress->backup))
 347                 progress->backup[(2*i)+1] = 0;
 348         progress->max = max;
 349
 350         progress->skip_progress = 0;
 351         if (getenv("MKE2FS_SKIP_PROGRESS"))
 352                 progress->skip_progress++;
 353
 354         fputs(label, stdout);
 355         fflush(stdout);
 356 }
 357
 358 static void progress_update(struct progress_struct *progress, __u32 val)
 359 {
 360         if ((progress->format[0] == 0) || progress->skip_progress)
 361                 return;
 362         printf(progress->format, val, progress->max);
 363         fputs(progress->backup, stdout);
 364 }
 365
 366 static void progress_close(struct progress_struct *progress)
 367 {
 368         if (progress->format[0] == 0)
 369                 return;
 370         printf("%-28s\n", "done");
 371 }
 372
 373
 374 /*
 375  * Helper function which zeros out _num_ blocks starting at _blk_.  In
 376  * case of an error, the details of the error is returned via _ret_blk_
 377  * and _ret_count_ if they are non-NULL pointers.  Returns 0 on
 378  * success, and an error code on an error.
 379  *
 380  * As a special case, if the first argument is NULL, then it will
 381  * attempt to free the static zeroizing buffer.  (This is to keep
 382  * programs that check for memory leaks happy.)
 383  */
 384 static errcode_t zero_blocks(ext2_filsys fs, blk_t blk, int num,
 385                              struct progress_struct *progress,
 386                              blk_t *ret_blk, int *ret_count)
 387 {
 388         int             j, count, next_update;
 389         static char     *buf;
 390         errcode_t       retval;
 391
 392         /* If fs is null, clean up the static buffer and return */
 393         if (!fs) {
 394                 if (buf) {
 395                         free(buf);
 396                         buf = 0;
 397                 }
 398                 return 0;
 399         }
 400         /* Allocate the zeroizing buffer if necessary */
 401         if (!buf) {
 402                 buf = xzalloc(fs->blocksize * STRIDE_LENGTH);
 403         }
 404         /* OK, do the write loop */
 405         next_update = 0;
 406
 407         for (j=0; j < num; j += STRIDE_LENGTH, blk += STRIDE_LENGTH) {
 408                 count = num - j;
 409                 if (count > STRIDE_LENGTH)
 410                         count = STRIDE_LENGTH;
 411                 retval = io_channel_write_blk(fs->io, blk, count, buf);
 412                 if (retval) {
 413                         if (ret_count)
 414                                 *ret_count = count;
 415                         if (ret_blk)
 416                                 *ret_blk = blk;
 417                         return retval;
 418                 }
 419                 if (progress && j > next_update) {
 420                         next_update += num / 100;
 421                         progress_update(progress, blk);
 422                 }
 423         }
 424         return 0;
 425 }
 426
 427 static void write_inode_tables(ext2_filsys fs)
 428 {
 429         errcode_t       retval;
 430         blk_t           blk;
 431         dgrp_t          i;
 432         int             num;
 433         struct progress_struct progress;
 434
 435         if (quiet)
 436                 memset(&progress, 0, sizeof(progress));
 437         else
 438                 progress_init(&progress, "Writing inode tables: ",
 439                               fs->group_desc_count);
 440
 441         for (i = 0; i < fs->group_desc_count; i++) {
 442                 progress_update(&progress, i);
 443
 444                 blk = fs->group_desc[i].bg_inode_table;
 445                 num = fs->inode_blocks_per_group;
 446
 447                 retval = zero_blocks(fs, blk, num, 0, &blk, &num);
 448                 mke2fs_error_msg_and_die(retval,
 449                         "write %d blocks in inode table starting at %d.",
 450                         num, blk);
 451                 if (sync_kludge) {
 452                         if (sync_kludge == 1)
 453                                 sync();
 454                         else if ((i % sync_kludge) == 0)
 455                                 sync();
 456                 }
 457         }
 458         zero_blocks(0, 0, 0, 0, 0, 0);
 459         progress_close(&progress);
 460 }
 461
 462 static void create_root_dir(ext2_filsys fs)
 463 {
 464         errcode_t               retval;
 465         struct ext2_inode       inode;
 466
 467         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0);
 468         mke2fs_error_msg_and_die(retval, "create root dir");
 469         if (geteuid()) {
 470                 retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode);
 471                 mke2fs_error_msg_and_die(retval, "read root inode");
 472                 inode.i_uid = getuid();
 473                 if (inode.i_uid)
 474                         inode.i_gid = getgid();
 475                 retval = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode);
 476                 mke2fs_error_msg_and_die(retval, "set root inode ownership");
 477         }
 478 }
 479
 480 static void create_lost_and_found(ext2_filsys fs)
 481 {
 482         errcode_t               retval;
 483         ext2_ino_t              ino;
 484         const char              *name = "lost+found";
 485         int                     i = 1;
 486         char                    *msg = "create";
 487         int                     lpf_size = 0;
 488
 489         fs->umask = 077;
 490         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name);
 491         if (retval) {
 492                 goto CREATE_LOST_AND_FOUND_ERROR;
 493         }
 494
 495         retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
 496         if (retval) {
 497                 msg = "lookup";
 498                 goto CREATE_LOST_AND_FOUND_ERROR;
 499         }
 500
 501         for (; i < EXT2_NDIR_BLOCKS; i++) {
 502                 if ((lpf_size += fs->blocksize) >= 16*1024)
 503                         break;
 504                 retval = ext2fs_expand_dir(fs, ino);
 505                 msg = "expand";
 506 CREATE_LOST_AND_FOUND_ERROR:
 507                 mke2fs_error_msg_and_die(retval, "%s %s", msg, name);
 508         }
 509 }
 510
 511 static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list)
 512 {
 513         errcode_t       retval;
 514
 515         ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO);
 516         fs->group_desc[0].bg_free_inodes_count--;
 517         fs->super->s_free_inodes_count--;
 518         retval = ext2fs_update_bb_inode(fs, bb_list);
 519         mke2fs_error_msg_and_die(retval, "set bad block inode");
 520 }
 521
 522 static void reserve_inodes(ext2_filsys fs)
 523 {
 524         ext2_ino_t      i;
 525         int             group;
 526
 527         for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++) {
 528                 ext2fs_mark_inode_bitmap(fs->inode_map, i);
 529                 group = ext2fs_group_of_ino(fs, i);
 530                 fs->group_desc[group].bg_free_inodes_count--;
 531                 fs->super->s_free_inodes_count--;
 532         }
 533         ext2fs_mark_ib_dirty(fs);
 534 }
 535
 536 #define BSD_DISKMAGIC   (0x82564557UL)  /* The disk magic number */
 537 #define BSD_MAGICDISK   (0x57455682UL)  /* The disk magic number reversed */
 538 #define BSD_LABEL_OFFSET        64
 539
 540 static void zap_sector(ext2_filsys fs, int sect, int nsect)
 541 {
 542         char *buf;
 543         char *fmt = "could not %s %d";
 544         int retval;
 545         unsigned int *magic;
 546
 547         buf = xmalloc(512*nsect);
 548
 549         if (sect == 0) {
 550                 /* Check for a BSD disklabel, and don't erase it if so */
 551                 retval = io_channel_read_blk(fs->io, 0, -512, buf);
 552                 if (retval)
 553                         mke2fs_warning_msg(retval, fmt, "read block", 0);
 554                 else {
 555                         magic = (unsigned int *) (buf + BSD_LABEL_OFFSET);
 556                         if ((*magic == BSD_DISKMAGIC) ||
 557                             (*magic == BSD_MAGICDISK))
 558                                 return;
 559                 }
 560         }
 561
 562         memset(buf, 0, 512*nsect);
 563         io_channel_set_blksize(fs->io, 512);
 564         retval = io_channel_write_blk(fs->io, sect, -512*nsect, buf);
 565         io_channel_set_blksize(fs->io, fs->blocksize);
 566         free(buf);
 567         mke2fs_warning_msg(retval, fmt, "erase sector", sect);
 568 }
 569
 570 static void create_journal_dev(ext2_filsys fs)
 571 {
 572         struct progress_struct  progress;
 573         errcode_t               retval;
 574         char                    *buf;
 575         char                    *fmt = "%s journal superblock";
 576         blk_t                   blk;
 577         int                     count;
 578
 579         retval = ext2fs_create_journal_superblock(fs,
 580                                   fs->super->s_blocks_count, 0, &buf);
 581         mke2fs_error_msg_and_die(retval, fmt, "init");
 582         if (quiet)
 583                 memset(&progress, 0, sizeof(progress));
 584         else
 585                 progress_init(&progress, "Zeroing journal device: ",
 586                               fs->super->s_blocks_count);
 587
 588         retval = zero_blocks(fs, 0, fs->super->s_blocks_count,
 589                              &progress, &blk, &count);
 590         mke2fs_error_msg_and_die(retval, "zero journal device (block %u, count %d)",
 591                         blk, count);
 592         zero_blocks(0, 0, 0, 0, 0, 0);
 593
 594         retval = io_channel_write_blk(fs->io,
 595                                       fs->super->s_first_data_block+1,
 596                                       1, buf);
 597         mke2fs_error_msg_and_die(retval, fmt, "write");
 598         progress_close(&progress);
 599 }
 600
 601 static void show_stats(ext2_filsys fs)
 602 {
 603         struct ext2_super_block *s = fs->super;
 604         char                    *os;
 605         blk_t                   group_block;
 606         dgrp_t                  i;
 607         int                     need, col_left;
 608
 609         mke2fs_warning_msg((param.s_blocks_count != s->s_blocks_count),
 610                 "%d blocks unused\n", param.s_blocks_count - s->s_blocks_count);
 611         os = e2p_os2string(fs->super->s_creator_os);
 612         printf( "Filesystem label=%.*s\n"
 613                         "OS type: %s\n"
 614                         "Block size=%u (log=%u)\n"
 615                         "Fragment size=%u (log=%u)\n"
 616                         "%u inodes, %u blocks\n"
 617                         "%u blocks (%2.2f%%) reserved for the super user\n"
 618                         "First data block=%u\n",
 619                         (int) sizeof(s->s_volume_name),
 620                         s->s_volume_name,
 621                         os,
 622                         fs->blocksize, s->s_log_block_size,
 623                         fs->fragsize, s->s_log_frag_size,
 624                         s->s_inodes_count, s->s_blocks_count,
 625                         s->s_r_blocks_count, 100.0 * s->s_r_blocks_count / s->s_blocks_count,
 626                         s->s_first_data_block);
 627         free(os);
 628         if (s->s_reserved_gdt_blocks) {
 629                 printf("Maximum filesystem blocks=%lu\n",
 630                        (s->s_reserved_gdt_blocks + fs->desc_blocks) *
 631                        (fs->blocksize / sizeof(struct ext2_group_desc)) *
 632                        s->s_blocks_per_group);
 633         }
 634         printf( "%u block group%s\n"
 635                         "%u blocks per group, %u fragments per group\n"
 636                         "%u inodes per group\n",
 637                         fs->group_desc_count, (fs->group_desc_count > 1) ? "s" : "",
 638                         s->s_blocks_per_group, s->s_frags_per_group,
 639                         s->s_inodes_per_group);
 640         if (fs->group_desc_count == 1) {
 641                 bb_putchar('\n');
 642                 return;
 643         }
 644
 645         printf("Superblock backups stored on blocks: ");
 646         group_block = s->s_first_data_block;
 647         col_left = 0;
 648         for (i = 1; i < fs->group_desc_count; i++) {
 649                 group_block += s->s_blocks_per_group;
 650                 if (!ext2fs_bg_has_super(fs, i))
 651                         continue;
 652                 if (i != 1)
 653                         printf(", ");
 654                 need = int_log10(group_block) + 2;
 655                 if (need > col_left) {
 656                         printf("\n\t");
 657                         col_left = 72;
 658                 }
 659                 col_left -= need;
 660                 printf("%u", group_block);
 661         }
 662         puts("\n");
 663 }
 664
 665 /*
 666  * Set the S_CREATOR_OS field.  Return true if OS is known,
 667  * otherwise, 0.
 668  */
 669 static int set_os(struct ext2_super_block *sb, char *os)
 670 {
 671         if (isdigit (*os)) {
 672                 sb->s_creator_os = atoi(os);
 673                 return 1;
 674         }
 675
 676         if ((sb->s_creator_os = e2p_string2os(os)) >= 0) {
 677                 return 1;
 678         } else if (!strcasecmp("GNU", os)) {
 679                 sb->s_creator_os = EXT2_OS_HURD;
 680                 return 1;
 681         }
 682         return 0;
 683 }
 684
 685 static void parse_extended_opts(struct ext2_super_block *sb_param,
 686                                 const char *opts)
 687 {
 688         char    *buf, *token, *next, *p, *arg;
 689         int     r_usage = 0;
 690
 691         buf = xstrdup(opts);
 692         for (token = buf; token && *token; token = next) {
 693                 p = strchr(token, ',');
 694                 next = 0;
 695                 if (p) {
 696                         *p = 0;
 697                         next = p+1;
 698                 }
 699                 arg = strchr(token, '=');
 700                 if (arg) {
 701                         *arg = 0;
 702                         arg++;
 703                 }
 704                 if (strcmp(token, "stride") == 0) {
 705                         if (!arg) {
 706                                 r_usage++;
 707                                 continue;
 708                         }
 709                         fs_stride = strtoul(arg, &p, 0);
 710                         if (*p || (fs_stride == 0)) {
 711                                 bb_error_msg("Invalid stride parameter: %s", arg);
 712                                 r_usage++;
 713                                 continue;
 714                         }
 715                 } else if (!strcmp(token, "resize")) {
 716                         unsigned long resize, bpg, rsv_groups;
 717                         unsigned long group_desc_count, desc_blocks;
 718                         unsigned int gdpb, blocksize;
 719                         int rsv_gdb;
 720
 721                         if (!arg) {
 722                                 r_usage++;
 723                                 continue;
 724                         }
 725
 726                         resize = parse_num_blocks(arg,
 727                                                   sb_param->s_log_block_size);
 728
 729                         if (resize == 0) {
 730                                 bb_error_msg("Invalid resize parameter: %s", arg);
 731                                 r_usage++;
 732                                 continue;
 733                         }
 734                         if (resize <= sb_param->s_blocks_count) {
 735                                 bb_error_msg("The resize maximum must be greater "
 736                                                 "than the filesystem size");
 737                                 r_usage++;
 738                                 continue;
 739                         }
 740
 741                         blocksize = EXT2_BLOCK_SIZE(sb_param);
 742                         bpg = sb_param->s_blocks_per_group;
 743                         if (!bpg)
 744                                 bpg = blocksize * 8;
 745                         gdpb = blocksize / sizeof(struct ext2_group_desc);
 746                         group_desc_count = (sb_param->s_blocks_count +
 747                                             bpg - 1) / bpg;
 748                         desc_blocks = (group_desc_count +
 749                                        gdpb - 1) / gdpb;
 750                         rsv_groups = (resize + bpg - 1) / bpg;
 751                         rsv_gdb = (rsv_groups + gdpb - 1) / gdpb -
 752                                 desc_blocks;
 753                         if (rsv_gdb > EXT2_ADDR_PER_BLOCK(sb_param))
 754                                 rsv_gdb = EXT2_ADDR_PER_BLOCK(sb_param);
 755
 756                         if (rsv_gdb > 0) {
 757                                 sb_param->s_feature_compat |=
 758                                         EXT2_FEATURE_COMPAT_RESIZE_INO;
 759
 760                                 sb_param->s_reserved_gdt_blocks = rsv_gdb;
 761                         }
 762                 } else
 763                         r_usage++;
 764         }
 765         if (r_usage) {
 766                 bb_error_msg_and_die(
 767                         "\nBad options specified.\n\n"
 768                         "Extended options are separated by commas, "
 769                         "and may take an argument which\n"
 770                         "\tis set off by an equals ('=') sign.\n\n"
 771                         "Valid extended options are:\n"
 772                         "\tstride=<stride length in blocks>\n"
 773                         "\tresize=<resize maximum size in blocks>\n");
 774         }
 775 }
 776
 777 static __u32 ok_features[3] = {
 778         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 779                 EXT2_FEATURE_COMPAT_RESIZE_INO |
 780                 EXT2_FEATURE_COMPAT_DIR_INDEX,  /* Compat */
 781         EXT2_FEATURE_INCOMPAT_FILETYPE|         /* Incompat */
 782                 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|
 783                 EXT2_FEATURE_INCOMPAT_META_BG,
 784         EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER     /* R/O compat */
 785 };
 786
 787 static int PRS(int argc, char **argv)
 788 {
 789         int             c;
 790         int             size;
 791         char *          tmp;
 792         int             blocksize = 0;
 793         int             inode_ratio = 0;
 794         int             inode_size = 0;
 795         int             reserved_ratio = 5;
 796         int             sector_size = 0;
 797         int             show_version_only = 0;
 798         ext2_ino_t      num_inodes = 0;
 799         errcode_t       retval;
 800         char *          extended_opts = NULL;
 801         const char *    fs_type = NULL;
 802         blk_t           dev_size;
 803         long            sysval;
 804
 805         /* Update our PATH to include /sbin  */
 806         e2fs_set_sbin_path();
 807
 808         tmp = getenv("MKE2FS_SYNC");
 809         if (tmp)
 810                 sync_kludge = atoi(tmp);
 811
 812         /* Determine the system page size if possible */
 813 #if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE))
 814 #define _SC_PAGESIZE _SC_PAGE_SIZE
 815 #endif
 816 #ifdef _SC_PAGESIZE
 817         sysval = sysconf(_SC_PAGESIZE);
 818         if (sysval > 0)
 819                 sys_page_size = sysval;
 820 #endif /* _SC_PAGESIZE */
 821
 822         setbuf(stdout, NULL);
 823         setbuf(stderr, NULL);
 824         memset(&param, 0, sizeof(struct ext2_super_block));
 825         param.s_rev_level = 1;  /* Create revision 1 filesystems now */
 826         param.s_feature_incompat |= EXT2_FEATURE_INCOMPAT_FILETYPE;
 827         param.s_feature_ro_compat |= EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
 828
 829 #ifdef __linux__
 830         linux_version_code = get_linux_version_code();
 831         if (linux_version_code && linux_version_code < KERNEL_VERSION(2,2,0)) {
 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 called as mkfs.ext3, create a journal inode */
 840         if (last_char_is(applet_name, '3'))
 841                 journal_size = -1;
 842
 843         while ((c = getopt (argc, argv,
 844                     "b:cE:f:g:i:jl:m:no:qr:R:s:tvI:J:ST:FL:M:N:O:V")) != EOF) {
 845                 switch (c) {
 846                 case 'b':
 847                         blocksize = xatou_range(optarg, EXT2_MIN_BLOCK_SIZE, EXT2_MAX_BLOCK_SIZE);
 848                         mke2fs_warning_msg((blocksize > 4096),
 849                                 "blocksize %d not usable on most systems",
 850                                 blocksize);
 851                         param.s_log_block_size =
 852                                 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
 853                         break;
 854                 case 'c':       /* Check for bad blocks */
 855                 case 't':       /* deprecated */
 856                         cflag++;
 857                         break;
 858                 case 'f':
 859                         size = xatou_range(optarg, EXT2_MIN_BLOCK_SIZE, EXT2_MAX_BLOCK_SIZE);
 860                         param.s_log_frag_size =
 861                                 int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE);
 862                         mke2fs_warning_msg(1, "fragments not supported. Ignoring -f option");
 863                         break;
 864                 case 'g':
 865                         param.s_blocks_per_group = xatou32(optarg);
 866                         if ((param.s_blocks_per_group % 8) != 0) {
 867                                 bb_error_msg_and_die("blocks per group must be multiple of 8");
 868                         }
 869                         break;
 870                 case 'i':
 871                         /* Huh? is "* 1024" correct? */
 872                         inode_ratio = xatou_range(optarg, EXT2_MIN_BLOCK_SIZE, EXT2_MAX_BLOCK_SIZE * 1024);
 873                         break;
 874                 case 'J':
 875                         parse_journal_opts(&journal_device, &journal_flags, &journal_size, optarg);
 876                         break;
 877                 case 'j':
 878                         param.s_feature_compat |=
 879                                 EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 880                         if (!journal_size)
 881                                 journal_size = -1;
 882                         break;
 883                 case 'l':
 884                         bad_blocks_filename = optarg;
 885                         break;
 886                 case 'm':
 887                         reserved_ratio = xatou_range(optarg, 0, 50);
 888                         break;
 889                 case 'n':
 890                         noaction++;
 891                         break;
 892                 case 'o':
 893                         creator_os = optarg;
 894                         break;
 895                 case 'r':
 896                         param.s_rev_level = xatoi_positive(optarg);
 897                         if (param.s_rev_level == EXT2_GOOD_OLD_REV) {
 898                                 param.s_feature_incompat = 0;
 899                                 param.s_feature_compat = 0;
 900                                 param.s_feature_ro_compat = 0;
 901                         }
 902                         break;
 903                 case 's':       /* deprecated */
 904                         if (xatou(optarg))
 905                                 param.s_feature_ro_compat |=
 906                                         EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
 907                         else
 908                                 param.s_feature_ro_compat &=
 909                                         ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
 910                         break;
 911 #ifdef EXT2_DYNAMIC_REV
 912                 case 'I':
 913                         inode_size = xatoi_positive(optarg);
 914                         break;
 915 #endif
 916                 case 'N':
 917                         num_inodes = xatoi_positive(optarg);
 918                         break;
 919                 case 'v':
 920                         quiet = 0;
 921                         break;
 922                 case 'q':
 923                         quiet = 1;
 924                         break;
 925                 case 'F':
 926                         force = 1;
 927                         break;
 928                 case 'L':
 929                         volume_label = optarg;
 930                         break;
 931                 case 'M':
 932                         mount_dir = optarg;
 933                         break;
 934                 case 'O':
 935                         if (!strcmp(optarg, "none")) {
 936                                 param.s_feature_compat = 0;
 937                                 param.s_feature_incompat = 0;
 938                                 param.s_feature_ro_compat = 0;
 939                                 break;
 940                         }
 941                         if (e2p_edit_feature(optarg,
 942                                             &param.s_feature_compat,
 943                                             ok_features)) {
 944                                 bb_error_msg_and_die("Invalid filesystem option set: %s", optarg);
 945                         }
 946                         break;
 947                 case 'E':
 948                 case 'R':
 949                         extended_opts = optarg;
 950                         break;
 951                 case 'S':
 952                         super_only = 1;
 953                         break;
 954                 case 'T':
 955                         fs_type = optarg;
 956                         break;
 957                 case 'V':
 958                         /* Print version number and exit */
 959                         show_version_only = 1;
 960                         quiet = 0;
 961                         break;
 962                 default:
 963                         bb_show_usage();
 964                 }
 965         }
 966         if ((optind == argc) /*&& !show_version_only*/)
 967                 bb_show_usage();
 968         device_name = argv[optind++];
 969
 970         mke2fs_verbose("mke2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
 971
 972         if (show_version_only) {
 973                 return 0;
 974         }
 975
 976         /*
 977          * If there's no blocksize specified and there is a journal
 978          * device, use it to figure out the blocksize
 979          */
 980         if (blocksize <= 0 && journal_device) {
 981                 ext2_filsys     jfs;
 982                 io_manager      io_ptr;
 983
 984 #ifdef CONFIG_TESTIO_DEBUG
 985                 io_ptr = test_io_manager;
 986                 test_io_backing_manager = unix_io_manager;
 987 #else
 988                 io_ptr = unix_io_manager;
 989 #endif
 990                 retval = ext2fs_open(journal_device,
 991                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
 992                                      0, io_ptr, &jfs);
 993                 mke2fs_error_msg_and_die(retval, "open journal device %s", journal_device);
 994                 if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) {
 995                         bb_error_msg_and_die(
 996                                 "Journal dev blocksize (%d) smaller than "
 997                                 "minimum blocksize %d\n", jfs->blocksize,
 998                                 -blocksize);
 999                 }
1000                 blocksize = jfs->blocksize;
1001                 param.s_log_block_size =
1002                         int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
1003                 ext2fs_close(jfs);
1004         }
1005
1006         if (blocksize > sys_page_size) {
1007                 mke2fs_warning_msg(1, "%d-byte blocks too big for system (max %d)",
1008                         blocksize, sys_page_size);
1009                 if (!force) {
1010                         proceed_question();
1011                 }
1012                 bb_error_msg("Forced to continue");
1013         }
1014         mke2fs_warning_msg(((blocksize > 4096) &&
1015                 (param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)),
1016                 "some 2.4 kernels do not support "
1017                 "blocksizes greater than 4096 using ext3.\n"
1018                 "Use -b 4096 if this is an issue for you\n");
1019
1020         if (optind < argc) {
1021                 param.s_blocks_count = parse_num_blocks(argv[optind++],
1022                                 param.s_log_block_size);
1023                 mke2fs_error_msg_and_die(!param.s_blocks_count, "invalid blocks count - %s", argv[optind - 1]);
1024         }
1025         if (optind < argc)
1026                 bb_show_usage();
1027
1028         if (param.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
1029                 if (!fs_type)
1030                         fs_type = "journal";
1031                 reserved_ratio = 0;
1032                 param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV;
1033                 param.s_feature_compat = 0;
1034                 param.s_feature_ro_compat = 0;
1035         }
1036         if (param.s_rev_level == EXT2_GOOD_OLD_REV &&
1037             (param.s_feature_compat || param.s_feature_ro_compat ||
1038              param.s_feature_incompat))
1039                 param.s_rev_level = 1;  /* Create a revision 1 filesystem */
1040
1041         check_plausibility(device_name , force);
1042         check_mount(device_name, force, "filesystem");
1043
1044         param.s_log_frag_size = param.s_log_block_size;
1045
1046         if (noaction && param.s_blocks_count) {
1047                 dev_size = param.s_blocks_count;
1048                 retval = 0;
1049         } else {
1050         retry:
1051                 retval = ext2fs_get_device_size(device_name,
1052                                                 EXT2_BLOCK_SIZE(&param),
1053                                                 &dev_size);
1054                 if ((retval == EFBIG) &&
1055                     (blocksize == 0) &&
1056                     (param.s_log_block_size == 0)) {
1057                         param.s_log_block_size = 2;
1058                         blocksize = 4096;
1059                         goto retry;
1060                 }
1061         }
1062
1063         mke2fs_error_msg_and_die((retval && (retval != EXT2_ET_UNIMPLEMENTED)),"determine filesystem size");
1064
1065         if (!param.s_blocks_count) {
1066                 if (retval == EXT2_ET_UNIMPLEMENTED) {
1067                         mke2fs_error_msg_and_die(1,
1068                                 "determine device size; you "
1069                                 "must specify\nthe size of the "
1070                                 "filesystem");
1071                 } else {
1072                         if (dev_size == 0) {
1073                                 bb_error_msg_and_die(
1074                                         "Device size reported to be zero.  "
1075                                         "Invalid partition specified, or\n\t"
1076                                         "partition table wasn't reread "
1077                                         "after running fdisk, due to\n\t"
1078                                         "a modified partition being busy "
1079                                         "and in use.  You may need to reboot\n\t"
1080                                         "to re-read your partition table.\n"
1081                                 );
1082                         }
1083                         param.s_blocks_count = dev_size;
1084                         if (sys_page_size > EXT2_BLOCK_SIZE(&param))
1085                                 param.s_blocks_count &= ~((sys_page_size /
1086                                                            EXT2_BLOCK_SIZE(&param))-1);
1087                 }
1088
1089         } else if (!force && (param.s_blocks_count > dev_size)) {
1090                 bb_error_msg("Filesystem larger than apparent device size");
1091                 proceed_question();
1092         }
1093
1094         /*
1095          * If the user asked for HAS_JOURNAL, then make sure a journal
1096          * gets created.
1097          */
1098         if ((param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
1099             !journal_size)
1100                 journal_size = -1;
1101
1102         /* Set first meta blockgroup via an environment variable */
1103         /* (this is mostly for debugging purposes) */
1104         if ((param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) &&
1105             ((tmp = getenv("MKE2FS_FIRST_META_BG"))))
1106                 param.s_first_meta_bg = atoi(tmp);
1107
1108         /* Get the hardware sector size, if available */
1109         retval = ext2fs_get_device_sectsize(device_name, &sector_size);
1110         mke2fs_error_msg_and_die(retval, "determine hardware sector size");
1111
1112         if ((tmp = getenv("MKE2FS_DEVICE_SECTSIZE")) != NULL)
1113                 sector_size = atoi(tmp);
1114
1115         set_fs_defaults(fs_type, &param, blocksize, sector_size, &inode_ratio);
1116         blocksize = EXT2_BLOCK_SIZE(&param);
1117
1118         if (extended_opts)
1119                 parse_extended_opts(&param, extended_opts);
1120
1121         /* Since sparse_super is the default, we would only have a problem
1122          * here if it was explicitly disabled.
1123          */
1124         if ((param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INO) &&
1125             !(param.s_feature_ro_compat&EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1126                 bb_error_msg_and_die("reserved online resize blocks not supported "
1127                           "on non-sparse filesystem");
1128         }
1129
1130         if (param.s_blocks_per_group) {
1131                 if (param.s_blocks_per_group < 256 ||
1132                     param.s_blocks_per_group > 8 * (unsigned) blocksize) {
1133                         bb_error_msg_and_die("blocks per group count out of range");
1134                 }
1135         }
1136
1137         if (!force && param.s_blocks_count >= (1 << 31)) {
1138                 bb_error_msg_and_die("Filesystem too large.  No more than 2**31-1 blocks\n"
1139                         "\t (8TB using a blocksize of 4k) are currently supported.");
1140         }
1141
1142         if (inode_size) {
1143                 if (inode_size < EXT2_GOOD_OLD_INODE_SIZE ||
1144                     inode_size > EXT2_BLOCK_SIZE(&param) ||
1145                     inode_size & (inode_size - 1)) {
1146                         bb_error_msg_and_die("invalid inode size %d (min %d/max %d)",
1147                                 inode_size, EXT2_GOOD_OLD_INODE_SIZE,
1148                                 blocksize);
1149                 }
1150                 mke2fs_warning_msg((inode_size != EXT2_GOOD_OLD_INODE_SIZE),
1151                         "%d-byte inodes not usable on most systems",
1152                         inode_size);
1153                 param.s_inode_size = inode_size;
1154         }
1155
1156         /*
1157          * Calculate number of inodes based on the inode ratio
1158          */
1159         param.s_inodes_count = num_inodes ? num_inodes :
1160                 ((__u64) param.s_blocks_count * blocksize)
1161                         / inode_ratio;
1162
1163         /*
1164          * Calculate number of blocks to reserve
1165          */
1166         param.s_r_blocks_count = (param.s_blocks_count * reserved_ratio) / 100;
1167         return 1;
1168 }
1169
1170 static void mke2fs_clean_up(void)
1171 {
1172         if (ENABLE_FEATURE_CLEAN_UP && journal_device) free(journal_device);
1173 }
1174
1175 int mke2fs_main (int argc, char **argv);
1176 int mke2fs_main (int argc, char **argv)
1177 {
1178         errcode_t       retval;
1179         ext2_filsys     fs;
1180         badblocks_list  bb_list = 0;
1181         unsigned int    i;
1182         int             val;
1183         io_manager      io_ptr;
1184
1185         if (ENABLE_FEATURE_CLEAN_UP)
1186                 atexit(mke2fs_clean_up);
1187         if (!PRS(argc, argv))
1188                 return 0;
1189
1190 #ifdef CONFIG_TESTIO_DEBUG
1191         io_ptr = test_io_manager;
1192         test_io_backing_manager = unix_io_manager;
1193 #else
1194         io_ptr = unix_io_manager;
1195 #endif
1196
1197         /*
1198          * Initialize the superblock....
1199          */
1200         retval = ext2fs_initialize(device_name, 0, &param,
1201                                    io_ptr, &fs);
1202         mke2fs_error_msg_and_die(retval, "set up superblock");
1203
1204         /*
1205          * Wipe out the old on-disk superblock
1206          */
1207         if (!noaction)
1208                 zap_sector(fs, 2, 6);
1209
1210         /*
1211          * Generate a UUID for it...
1212          */
1213         uuid_generate(fs->super->s_uuid);
1214
1215         /*
1216          * Initialize the directory index variables
1217          */
1218         fs->super->s_def_hash_version = EXT2_HASH_TEA;
1219         uuid_generate((unsigned char *) fs->super->s_hash_seed);
1220
1221         /*
1222          * Add "jitter" to the superblock's check interval so that we
1223          * don't check all the filesystems at the same time.  We use a
1224          * kludgy hack of using the UUID to derive a random jitter value.
1225          */
1226         for (i = 0, val = 0; i < sizeof(fs->super->s_uuid); i++)
1227                 val += fs->super->s_uuid[i];
1228         fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT;
1229
1230         /*
1231          * Override the creator OS, if applicable
1232          */
1233         if (creator_os && !set_os(fs->super, creator_os)) {
1234                 bb_error_msg_and_die("unknown os - %s", creator_os);
1235         }
1236
1237         /*
1238          * For the Hurd, we will turn off filetype since it doesn't
1239          * support it.
1240          */
1241         if (fs->super->s_creator_os == EXT2_OS_HURD)
1242                 fs->super->s_feature_incompat &=
1243                         ~EXT2_FEATURE_INCOMPAT_FILETYPE;
1244
1245         /*
1246          * Set the volume label...
1247          */
1248         if (volume_label) {
1249                 snprintf(fs->super->s_volume_name, sizeof(fs->super->s_volume_name), "%s", volume_label);
1250         }
1251
1252         /*
1253          * Set the last mount directory
1254          */
1255         if (mount_dir) {
1256                 snprintf(fs->super->s_last_mounted, sizeof(fs->super->s_last_mounted), "%s", mount_dir);
1257         }
1258
1259         if (!quiet || noaction)
1260                 show_stats(fs);
1261
1262         if (noaction)
1263                 return 0;
1264
1265         if (fs->super->s_feature_incompat &
1266             EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
1267                 create_journal_dev(fs);
1268                 return (ext2fs_close(fs) ? 1 : 0);
1269         }
1270
1271         if (bad_blocks_filename)
1272                 read_bb_file(fs, &bb_list, bad_blocks_filename);
1273         if (cflag)
1274                 test_disk(fs, &bb_list);
1275
1276         handle_bad_blocks(fs, bb_list);
1277         fs->stride = fs_stride;
1278         retval = ext2fs_allocate_tables(fs);
1279         mke2fs_error_msg_and_die(retval, "allocate filesystem tables");
1280         if (super_only) {
1281                 fs->super->s_state |= EXT2_ERROR_FS;
1282                 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY);
1283         } else {
1284                 /* rsv must be a power of two (64kB is MD RAID sb alignment) */
1285                 unsigned int rsv = 65536 / fs->blocksize;
1286                 unsigned long blocks = fs->super->s_blocks_count;
1287                 unsigned long start;
1288                 blk_t ret_blk;
1289
1290 #ifdef ZAP_BOOTBLOCK
1291                 zap_sector(fs, 0, 2);
1292 #endif
1293
1294                 /*
1295                  * Wipe out any old MD RAID (or other) metadata at the end
1296                  * of the device.  This will also verify that the device is
1297                  * as large as we think.  Be careful with very small devices.
1298                  */
1299                 start = (blocks & ~(rsv - 1));
1300                 if (start > rsv)
1301                         start -= rsv;
1302                 if (start > 0)
1303                         retval = zero_blocks(fs, start, blocks - start,
1304                                              NULL, &ret_blk, NULL);
1305
1306                 mke2fs_warning_msg(retval, "can't zero block %u at end of filesystem", ret_blk);
1307                 write_inode_tables(fs);
1308                 create_root_dir(fs);
1309                 create_lost_and_found(fs);
1310                 reserve_inodes(fs);
1311                 create_bad_block_inode(fs, bb_list);
1312                 if (fs->super->s_feature_compat &
1313                     EXT2_FEATURE_COMPAT_RESIZE_INO) {
1314                         retval = ext2fs_create_resize_inode(fs);
1315                         mke2fs_error_msg_and_die(retval, "reserve blocks for online resize");
1316                 }
1317         }
1318
1319         if (journal_device) {
1320                 make_journal_device(journal_device, fs, quiet, force);
1321         } else if (journal_size) {
1322                 make_journal_blocks(fs, journal_size, journal_flags, quiet);
1323         }
1324
1325         mke2fs_verbose("Writing superblocks and filesystem accounting information: ");
1326         retval = ext2fs_flush(fs);
1327         mke2fs_warning_msg(retval, "had trouble writing out superblocks");
1328         mke2fs_verbose_done();
1329         if (!quiet && !getenv("MKE2FS_SKIP_CHECK_MSG"))
1330                 print_check_message(fs);
1331         val = ext2fs_close(fs);
1332         return (retval || val) ? 1 : 0;
1333 }