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 %d %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, next_update_incr;
 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         next_update_incr = num / 100;
 407         if (next_update_incr < 1)
 408                 next_update_incr = 1;
 409         for (j=0; j < num; j += STRIDE_LENGTH, blk += STRIDE_LENGTH) {
 410                 count = num - j;
 411                 if (count > STRIDE_LENGTH)
 412                         count = STRIDE_LENGTH;
 413                 retval = io_channel_write_blk(fs->io, blk, count, buf);
 414                 if (retval) {
 415                         if (ret_count)
 416                                 *ret_count = count;
 417                         if (ret_blk)
 418                                 *ret_blk = blk;
 419                         return retval;
 420                 }
 421                 if (progress && j > next_update) {
 422                         next_update += num / 100;
 423                         progress_update(progress, blk);
 424                 }
 425         }
 426         return 0;
 427 }
 428
 429 static void write_inode_tables(ext2_filsys fs)
 430 {
 431         errcode_t       retval;
 432         blk_t           blk;
 433         dgrp_t          i;
 434         int             num;
 435         struct progress_struct progress;
 436
 437         if (quiet)
 438                 memset(&progress, 0, sizeof(progress));
 439         else
 440                 progress_init(&progress, "Writing inode tables: ",
 441                               fs->group_desc_count);
 442
 443         for (i = 0; i < fs->group_desc_count; i++) {
 444                 progress_update(&progress, i);
 445
 446                 blk = fs->group_desc[i].bg_inode_table;
 447                 num = fs->inode_blocks_per_group;
 448
 449                 retval = zero_blocks(fs, blk, num, 0, &blk, &num);
 450                 mke2fs_error_msg_and_die(retval,
 451                         "write %d blocks in inode table starting at %d.",
 452                         num, blk);
 453                 if (sync_kludge) {
 454                         if (sync_kludge == 1)
 455                                 sync();
 456                         else if ((i % sync_kludge) == 0)
 457                                 sync();
 458                 }
 459         }
 460         zero_blocks(0, 0, 0, 0, 0, 0);
 461         progress_close(&progress);
 462 }
 463
 464 static void create_root_dir(ext2_filsys fs)
 465 {
 466         errcode_t               retval;
 467         struct ext2_inode       inode;
 468
 469         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0);
 470         mke2fs_error_msg_and_die(retval, "create root dir");
 471         if (geteuid()) {
 472                 retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode);
 473                 mke2fs_error_msg_and_die(retval, "read root inode");
 474                 inode.i_uid = getuid();
 475                 if (inode.i_uid)
 476                         inode.i_gid = getgid();
 477                 retval = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode);
 478                 mke2fs_error_msg_and_die(retval, "set root inode ownership");
 479         }
 480 }
 481
 482 static void create_lost_and_found(ext2_filsys fs)
 483 {
 484         errcode_t               retval;
 485         ext2_ino_t              ino;
 486         const char              *name = "lost+found";
 487         int                     i = 1;
 488         char                    *msg = "create";
 489         int                     lpf_size = 0;
 490
 491         fs->umask = 077;
 492         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name);
 493         if (retval) {
 494                 goto CREATE_LOST_AND_FOUND_ERROR;
 495         }
 496
 497         retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
 498         if (retval) {
 499                 msg = "lookup";
 500                 goto CREATE_LOST_AND_FOUND_ERROR;
 501         }
 502
 503         for (; i < EXT2_NDIR_BLOCKS; i++) {
 504                 if ((lpf_size += fs->blocksize) >= 16*1024)
 505                         break;
 506                 retval = ext2fs_expand_dir(fs, ino);
 507                 msg = "expand";
 508 CREATE_LOST_AND_FOUND_ERROR:
 509                 mke2fs_error_msg_and_die(retval, "%s %s", msg, name);
 510         }
 511 }
 512
 513 static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list)
 514 {
 515         errcode_t       retval;
 516
 517         ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO);
 518         fs->group_desc[0].bg_free_inodes_count--;
 519         fs->super->s_free_inodes_count--;
 520         retval = ext2fs_update_bb_inode(fs, bb_list);
 521         mke2fs_error_msg_and_die(retval, "set bad block inode");
 522 }
 523
 524 static void reserve_inodes(ext2_filsys fs)
 525 {
 526         ext2_ino_t      i;
 527         int             group;
 528
 529         for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++) {
 530                 ext2fs_mark_inode_bitmap(fs->inode_map, i);
 531                 group = ext2fs_group_of_ino(fs, i);
 532                 fs->group_desc[group].bg_free_inodes_count--;
 533                 fs->super->s_free_inodes_count--;
 534         }
 535         ext2fs_mark_ib_dirty(fs);
 536 }
 537
 538 #define BSD_DISKMAGIC   (0x82564557UL)  /* The disk magic number */
 539 #define BSD_MAGICDISK   (0x57455682UL)  /* The disk magic number reversed */
 540 #define BSD_LABEL_OFFSET        64
 541
 542 static void zap_sector(ext2_filsys fs, int sect, int nsect)
 543 {
 544         char *buf;
 545         char *fmt = "could not %s %d";
 546         int retval;
 547         unsigned int *magic;
 548
 549         buf = xmalloc(512*nsect);
 550
 551         if (sect == 0) {
 552                 /* Check for a BSD disklabel, and don't erase it if so */
 553                 retval = io_channel_read_blk(fs->io, 0, -512, buf);
 554                 if (retval)
 555                         mke2fs_warning_msg(retval, fmt, "read block", 0);
 556                 else {
 557                         magic = (unsigned int *) (buf + BSD_LABEL_OFFSET);
 558                         if ((*magic == BSD_DISKMAGIC) ||
 559                             (*magic == BSD_MAGICDISK))
 560                                 return;
 561                 }
 562         }
 563
 564         memset(buf, 0, 512*nsect);
 565         io_channel_set_blksize(fs->io, 512);
 566         retval = io_channel_write_blk(fs->io, sect, -512*nsect, buf);
 567         io_channel_set_blksize(fs->io, fs->blocksize);
 568         free(buf);
 569         mke2fs_warning_msg(retval, fmt, "erase sector", sect);
 570 }
 571
 572 static void create_journal_dev(ext2_filsys fs)
 573 {
 574         struct progress_struct  progress;
 575         errcode_t               retval;
 576         char                    *buf;
 577         char                    *fmt = "%s journal superblock";
 578         blk_t                   blk;
 579         int                     count;
 580
 581         retval = ext2fs_create_journal_superblock(fs,
 582                                   fs->super->s_blocks_count, 0, &buf);
 583         mke2fs_error_msg_and_die(retval, fmt, "init");
 584         if (quiet)
 585                 memset(&progress, 0, sizeof(progress));
 586         else
 587                 progress_init(&progress, "Zeroing journal device: ",
 588                               fs->super->s_blocks_count);
 589
 590         retval = zero_blocks(fs, 0, fs->super->s_blocks_count,
 591                              &progress, &blk, &count);
 592         mke2fs_error_msg_and_die(retval, "zero journal device (block %u, count %d)",
 593                         blk, count);
 594         zero_blocks(0, 0, 0, 0, 0, 0);
 595
 596         retval = io_channel_write_blk(fs->io,
 597                                       fs->super->s_first_data_block+1,
 598                                       1, buf);
 599         mke2fs_error_msg_and_die(retval, fmt, "write");
 600         progress_close(&progress);
 601 }
 602
 603 static void show_stats(ext2_filsys fs)
 604 {
 605         struct ext2_super_block *s = fs->super;
 606         char                    *os;
 607         blk_t                   group_block;
 608         dgrp_t                  i;
 609         int                     need, col_left;
 610
 611         mke2fs_warning_msg((param.s_blocks_count != s->s_blocks_count),
 612                 "%d blocks unused\n", param.s_blocks_count - s->s_blocks_count);
 613         os = e2p_os2string(fs->super->s_creator_os);
 614         printf( "Filesystem label=%.*s\n"
 615                         "OS type: %s\n"
 616                         "Block size=%u (log=%u)\n"
 617                         "Fragment size=%u (log=%u)\n"
 618                         "%u inodes, %u blocks\n"
 619                         "%u blocks (%2.2f%%) reserved for the super user\n"
 620                         "First data block=%u\n",
 621                         (int) sizeof(s->s_volume_name),
 622                         s->s_volume_name,
 623                         os,
 624                         fs->blocksize, s->s_log_block_size,
 625                         fs->fragsize, s->s_log_frag_size,
 626                         s->s_inodes_count, s->s_blocks_count,
 627                         s->s_r_blocks_count, 100.0 * s->s_r_blocks_count / s->s_blocks_count,
 628                         s->s_first_data_block);
 629         free(os);
 630         if (s->s_reserved_gdt_blocks) {
 631                 printf("Maximum filesystem blocks=%lu\n",
 632                        (s->s_reserved_gdt_blocks + fs->desc_blocks) *
 633                        (fs->blocksize / sizeof(struct ext2_group_desc)) *
 634                        s->s_blocks_per_group);
 635         }
 636         printf( "%u block group%s\n"
 637                         "%u blocks per group, %u fragments per group\n"
 638                         "%u inodes per group\n",
 639                         fs->group_desc_count, (fs->group_desc_count > 1) ? "s" : "",
 640                         s->s_blocks_per_group, s->s_frags_per_group,
 641                         s->s_inodes_per_group);
 642         if (fs->group_desc_count == 1) {
 643                 bb_putchar('\n');
 644                 return;
 645         }
 646
 647         printf("Superblock backups stored on blocks: ");
 648         group_block = s->s_first_data_block;
 649         col_left = 0;
 650         for (i = 1; i < fs->group_desc_count; i++) {
 651                 group_block += s->s_blocks_per_group;
 652                 if (!ext2fs_bg_has_super(fs, i))
 653                         continue;
 654                 if (i != 1)
 655                         printf(", ");
 656                 need = int_log10(group_block) + 2;
 657                 if (need > col_left) {
 658                         printf("\n\t");
 659                         col_left = 72;
 660                 }
 661                 col_left -= need;
 662                 printf("%u", group_block);
 663         }
 664         puts("\n");
 665 }
 666
 667 /*
 668  * Set the S_CREATOR_OS field.  Return true if OS is known,
 669  * otherwise, 0.
 670  */
 671 static int set_os(struct ext2_super_block *sb, char *os)
 672 {
 673         if (isdigit (*os)) {
 674                 sb->s_creator_os = atoi(os);
 675                 return 1;
 676         }
 677
 678         if ((sb->s_creator_os = e2p_string2os(os)) >= 0) {
 679                 return 1;
 680         } else if (!strcasecmp("GNU", os)) {
 681                 sb->s_creator_os = EXT2_OS_HURD;
 682                 return 1;
 683         }
 684         return 0;
 685 }
 686
 687 static void parse_extended_opts(struct ext2_super_block *sb_param,
 688                                 const char *opts)
 689 {
 690         char    *buf, *token, *next, *p, *arg;
 691         int     r_usage = 0;
 692
 693         buf = xstrdup(opts);
 694         for (token = buf; token && *token; token = next) {
 695                 p = strchr(token, ',');
 696                 next = 0;
 697                 if (p) {
 698                         *p = 0;
 699                         next = p+1;
 700                 }
 701                 arg = strchr(token, '=');
 702                 if (arg) {
 703                         *arg = 0;
 704                         arg++;
 705                 }
 706                 if (strcmp(token, "stride") == 0) {
 707                         if (!arg) {
 708                                 r_usage++;
 709                                 continue;
 710                         }
 711                         fs_stride = strtoul(arg, &p, 0);
 712                         if (*p || (fs_stride == 0)) {
 713                                 bb_error_msg("Invalid stride parameter: %s", arg);
 714                                 r_usage++;
 715                                 continue;
 716                         }
 717                 } else if (!strcmp(token, "resize")) {
 718                         unsigned long resize, bpg, rsv_groups;
 719                         unsigned long group_desc_count, desc_blocks;
 720                         unsigned int gdpb, blocksize;
 721                         int rsv_gdb;
 722
 723                         if (!arg) {
 724                                 r_usage++;
 725                                 continue;
 726                         }
 727
 728                         resize = parse_num_blocks(arg,
 729                                                   sb_param->s_log_block_size);
 730
 731                         if (resize == 0) {
 732                                 bb_error_msg("Invalid resize parameter: %s", arg);
 733                                 r_usage++;
 734                                 continue;
 735                         }
 736                         if (resize <= sb_param->s_blocks_count) {
 737                                 bb_error_msg("The resize maximum must be greater "
 738                                                 "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_INO;
 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                         "Extended 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 extended 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_INO |
 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             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 = NULL;
 803         const char *    fs_type = NULL;
 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
 831 #ifdef __linux__
 832         linux_version_code = get_linux_version_code();
 833         if (linux_version_code && linux_version_code < KERNEL_VERSION(2,2,0)) {
 834                 param.s_rev_level = 0;
 835                 param.s_feature_incompat = 0;
 836                 param.s_feature_compat = 0;
 837                 param.s_feature_ro_compat = 0;
 838         }
 839 #endif
 840
 841         /* If called as mkfs.ext3, create a journal inode */
 842         if (last_char_is(applet_name, '3'))
 843                 journal_size = -1;
 844
 845         while ((c = getopt (argc, argv,
 846                     "b:cE:f:g:i:jl:m:no:qr:R:s:tvI:J:ST:FL:M:N:O:V")) != EOF) {
 847                 switch (c) {
 848                 case 'b':
 849                         blocksize = xatou_range(optarg, EXT2_MIN_BLOCK_SIZE, EXT2_MAX_BLOCK_SIZE);
 850                         mke2fs_warning_msg((blocksize > 4096),
 851                                 "blocksize %d not usable on most systems",
 852                                 blocksize);
 853                         param.s_log_block_size =
 854                                 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
 855                         break;
 856                 case 'c':       /* Check for bad blocks */
 857                 case 't':       /* deprecated */
 858                         cflag++;
 859                         break;
 860                 case 'f':
 861                         size = xatou_range(optarg, EXT2_MIN_BLOCK_SIZE, EXT2_MAX_BLOCK_SIZE);
 862                         param.s_log_frag_size =
 863                                 int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE);
 864                         mke2fs_warning_msg(1, "fragments not supported. Ignoring -f option");
 865                         break;
 866                 case 'g':
 867                         param.s_blocks_per_group = xatou32(optarg);
 868                         if ((param.s_blocks_per_group % 8) != 0) {
 869                                 bb_error_msg_and_die("blocks per group must be multiple of 8");
 870                         }
 871                         break;
 872                 case 'i':
 873                         /* Huh? is "* 1024" correct? */
 874                         inode_ratio = xatou_range(optarg, EXT2_MIN_BLOCK_SIZE, EXT2_MAX_BLOCK_SIZE * 1024);
 875                         break;
 876                 case 'J':
 877                         parse_journal_opts(&journal_device, &journal_flags, &journal_size, optarg);
 878                         break;
 879                 case 'j':
 880                         param.s_feature_compat |=
 881                                 EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 882                         if (!journal_size)
 883                                 journal_size = -1;
 884                         break;
 885                 case 'l':
 886                         bad_blocks_filename = optarg;
 887                         break;
 888                 case 'm':
 889                         reserved_ratio = xatou_range(optarg, 0, 50);
 890                         break;
 891                 case 'n':
 892                         noaction++;
 893                         break;
 894                 case 'o':
 895                         creator_os = optarg;
 896                         break;
 897                 case 'r':
 898                         param.s_rev_level = xatoi_positive(optarg);
 899                         if (param.s_rev_level == EXT2_GOOD_OLD_REV) {
 900                                 param.s_feature_incompat = 0;
 901                                 param.s_feature_compat = 0;
 902                                 param.s_feature_ro_compat = 0;
 903                         }
 904                         break;
 905                 case 's':       /* deprecated */
 906                         if (xatou(optarg))
 907                                 param.s_feature_ro_compat |=
 908                                         EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
 909                         else
 910                                 param.s_feature_ro_compat &=
 911                                         ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
 912                         break;
 913 #ifdef EXT2_DYNAMIC_REV
 914                 case 'I':
 915                         inode_size = xatoi_positive(optarg);
 916                         break;
 917 #endif
 918                 case 'N':
 919                         num_inodes = xatoi_positive(optarg);
 920                         break;
 921                 case 'v':
 922                         quiet = 0;
 923                         break;
 924                 case 'q':
 925                         quiet = 1;
 926                         break;
 927                 case 'F':
 928                         force = 1;
 929                         break;
 930                 case 'L':
 931                         volume_label = optarg;
 932                         break;
 933                 case 'M':
 934                         mount_dir = optarg;
 935                         break;
 936                 case 'O':
 937                         if (!strcmp(optarg, "none")) {
 938                                 param.s_feature_compat = 0;
 939                                 param.s_feature_incompat = 0;
 940                                 param.s_feature_ro_compat = 0;
 941                                 break;
 942                         }
 943                         if (e2p_edit_feature(optarg,
 944                                             &param.s_feature_compat,
 945                                             ok_features)) {
 946                                 bb_error_msg_and_die("Invalid filesystem option set: %s", optarg);
 947                         }
 948                         break;
 949                 case 'E':
 950                 case 'R':
 951                         extended_opts = optarg;
 952                         break;
 953                 case 'S':
 954                         super_only = 1;
 955                         break;
 956                 case 'T':
 957                         fs_type = optarg;
 958                         break;
 959                 case 'V':
 960                         /* Print version number and exit */
 961                         show_version_only = 1;
 962                         quiet = 0;
 963                         break;
 964                 default:
 965                         bb_show_usage();
 966                 }
 967         }
 968         if ((optind == argc) /*&& !show_version_only*/)
 969                 bb_show_usage();
 970         device_name = argv[optind++];
 971
 972         mke2fs_verbose("mke2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
 973
 974         if (show_version_only) {
 975                 return 0;
 976         }
 977
 978         /*
 979          * If there's no blocksize specified and there is a journal
 980          * device, use it to figure out the blocksize
 981          */
 982         if (blocksize <= 0 && journal_device) {
 983                 ext2_filsys     jfs;
 984                 io_manager      io_ptr;
 985
 986 #ifdef CONFIG_TESTIO_DEBUG
 987                 io_ptr = test_io_manager;
 988                 test_io_backing_manager = unix_io_manager;
 989 #else
 990                 io_ptr = unix_io_manager;
 991 #endif
 992                 retval = ext2fs_open(journal_device,
 993                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
 994                                      0, io_ptr, &jfs);
 995                 mke2fs_error_msg_and_die(retval, "open journal device %s", journal_device);
 996                 if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) {
 997                         bb_error_msg_and_die(
 998                                 "Journal dev blocksize (%d) smaller than "
 999                                 "minimum blocksize %d\n", jfs->blocksize,
1000                                 -blocksize);
1001                 }
1002                 blocksize = jfs->blocksize;
1003                 param.s_log_block_size =
1004                         int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
1005                 ext2fs_close(jfs);
1006         }
1007
1008         if (blocksize > sys_page_size) {
1009                 mke2fs_warning_msg(1, "%d-byte blocks too big for system (max %d)",
1010                         blocksize, sys_page_size);
1011                 if (!force) {
1012                         proceed_question();
1013                 }
1014                 bb_error_msg("Forced to continue");
1015         }
1016         mke2fs_warning_msg(((blocksize > 4096) &&
1017                 (param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)),
1018                 "some 2.4 kernels do not support "
1019                 "blocksizes greater than 4096 using ext3.\n"
1020                 "Use -b 4096 if this is an issue for you\n");
1021
1022         if (optind < argc) {
1023                 param.s_blocks_count = parse_num_blocks(argv[optind++],
1024                                 param.s_log_block_size);
1025                 mke2fs_error_msg_and_die(!param.s_blocks_count, "invalid blocks count - %s", argv[optind - 1]);
1026         }
1027         if (optind < argc)
1028                 bb_show_usage();
1029
1030         if (param.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
1031                 if (!fs_type)
1032                         fs_type = "journal";
1033                 reserved_ratio = 0;
1034                 param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV;
1035                 param.s_feature_compat = 0;
1036                 param.s_feature_ro_compat = 0;
1037         }
1038         if (param.s_rev_level == EXT2_GOOD_OLD_REV &&
1039             (param.s_feature_compat || param.s_feature_ro_compat ||
1040              param.s_feature_incompat))
1041                 param.s_rev_level = 1;  /* Create a revision 1 filesystem */
1042
1043         check_plausibility(device_name , force);
1044         check_mount(device_name, force, "filesystem");
1045
1046         param.s_log_frag_size = param.s_log_block_size;
1047
1048         if (noaction && param.s_blocks_count) {
1049                 dev_size = param.s_blocks_count;
1050                 retval = 0;
1051         } else {
1052         retry:
1053                 retval = ext2fs_get_device_size(device_name,
1054                                                 EXT2_BLOCK_SIZE(&param),
1055                                                 &dev_size);
1056                 if ((retval == EFBIG) &&
1057                     (blocksize == 0) &&
1058                     (param.s_log_block_size == 0)) {
1059                         param.s_log_block_size = 2;
1060                         blocksize = 4096;
1061                         goto retry;
1062                 }
1063         }
1064
1065         mke2fs_error_msg_and_die((retval && (retval != EXT2_ET_UNIMPLEMENTED)),"determine filesystem size");
1066
1067         if (!param.s_blocks_count) {
1068                 if (retval == EXT2_ET_UNIMPLEMENTED) {
1069                         mke2fs_error_msg_and_die(1,
1070                                 "determine device size; you "
1071                                 "must specify\nthe size of the "
1072                                 "filesystem");
1073                 } else {
1074                         if (dev_size == 0) {
1075                                 bb_error_msg_and_die(
1076                                         "Device size reported to be zero.  "
1077                                         "Invalid partition specified, or\n\t"
1078                                         "partition table wasn't reread "
1079                                         "after running fdisk, due to\n\t"
1080                                         "a modified partition being busy "
1081                                         "and in use.  You may need to reboot\n\t"
1082                                         "to re-read your partition table.\n"
1083                                 );
1084                         }
1085                         param.s_blocks_count = dev_size;
1086                         if (sys_page_size > EXT2_BLOCK_SIZE(&param))
1087                                 param.s_blocks_count &= ~((sys_page_size /
1088                                                            EXT2_BLOCK_SIZE(&param))-1);
1089                 }
1090
1091         } else if (!force && (param.s_blocks_count > dev_size)) {
1092                 bb_error_msg("Filesystem larger than apparent device size");
1093                 proceed_question();
1094         }
1095
1096         /*
1097          * If the user asked for HAS_JOURNAL, then make sure a journal
1098          * gets created.
1099          */
1100         if ((param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
1101             !journal_size)
1102                 journal_size = -1;
1103
1104         /* Set first meta blockgroup via an environment variable */
1105         /* (this is mostly for debugging purposes) */
1106         if ((param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) &&
1107             ((tmp = getenv("MKE2FS_FIRST_META_BG"))))
1108                 param.s_first_meta_bg = atoi(tmp);
1109
1110         /* Get the hardware sector size, if available */
1111         retval = ext2fs_get_device_sectsize(device_name, &sector_size);
1112         mke2fs_error_msg_and_die(retval, "determine hardware sector size");
1113
1114         if ((tmp = getenv("MKE2FS_DEVICE_SECTSIZE")) != NULL)
1115                 sector_size = atoi(tmp);
1116
1117         set_fs_defaults(fs_type, &param, blocksize, sector_size, &inode_ratio);
1118         blocksize = EXT2_BLOCK_SIZE(&param);
1119
1120         if (extended_opts)
1121                 parse_extended_opts(&param, extended_opts);
1122
1123         /* Since sparse_super is the default, we would only have a problem
1124          * here if it was explicitly disabled.
1125          */
1126         if ((param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INO) &&
1127             !(param.s_feature_ro_compat&EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1128                 bb_error_msg_and_die("reserved online resize blocks not supported "
1129                           "on non-sparse filesystem");
1130         }
1131
1132         if (param.s_blocks_per_group) {
1133                 if (param.s_blocks_per_group < 256 ||
1134                     param.s_blocks_per_group > 8 * (unsigned) blocksize) {
1135                         bb_error_msg_and_die("blocks per group count out of range");
1136                 }
1137         }
1138
1139         if (!force && param.s_blocks_count >= (1 << 31)) {
1140                 bb_error_msg_and_die("Filesystem too large.  No more than 2**31-1 blocks\n"
1141                         "\t (8TB using a blocksize of 4k) are currently supported.");
1142         }
1143
1144         if (inode_size) {
1145                 if (inode_size < EXT2_GOOD_OLD_INODE_SIZE ||
1146                     inode_size > EXT2_BLOCK_SIZE(&param) ||
1147                     inode_size & (inode_size - 1)) {
1148                         bb_error_msg_and_die("invalid inode size %d (min %d/max %d)",
1149                                 inode_size, EXT2_GOOD_OLD_INODE_SIZE,
1150                                 blocksize);
1151                 }
1152                 mke2fs_warning_msg((inode_size != EXT2_GOOD_OLD_INODE_SIZE),
1153                         "%d-byte inodes not usable on most systems",
1154                         inode_size);
1155                 param.s_inode_size = inode_size;
1156         }
1157
1158         /*
1159          * Calculate number of inodes based on the inode ratio
1160          */
1161         param.s_inodes_count = num_inodes ? num_inodes :
1162                 ((__u64) param.s_blocks_count * blocksize)
1163                         / inode_ratio;
1164
1165         /*
1166          * Calculate number of blocks to reserve
1167          */
1168         param.s_r_blocks_count = (param.s_blocks_count * reserved_ratio) / 100;
1169         return 1;
1170 }
1171
1172 static void mke2fs_clean_up(void)
1173 {
1174         if (ENABLE_FEATURE_CLEAN_UP && journal_device) free(journal_device);
1175 }
1176
1177 int mke2fs_main (int argc, char **argv);
1178 int mke2fs_main (int argc, char **argv)
1179 {
1180         errcode_t       retval;
1181         ext2_filsys     fs;
1182         badblocks_list  bb_list = 0;
1183         unsigned int    i;
1184         int             val;
1185         io_manager      io_ptr;
1186
1187         if (ENABLE_FEATURE_CLEAN_UP)
1188                 atexit(mke2fs_clean_up);
1189         if (!PRS(argc, argv))
1190                 return 0;
1191
1192 #ifdef CONFIG_TESTIO_DEBUG
1193         io_ptr = test_io_manager;
1194         test_io_backing_manager = unix_io_manager;
1195 #else
1196         io_ptr = unix_io_manager;
1197 #endif
1198
1199         /*
1200          * Initialize the superblock....
1201          */
1202         retval = ext2fs_initialize(device_name, 0, &param,
1203                                    io_ptr, &fs);
1204         mke2fs_error_msg_and_die(retval, "set up superblock");
1205
1206         /*
1207          * Wipe out the old on-disk superblock
1208          */
1209         if (!noaction)
1210                 zap_sector(fs, 2, 6);
1211
1212         /*
1213          * Generate a UUID for it...
1214          */
1215         uuid_generate(fs->super->s_uuid);
1216
1217         /*
1218          * Initialize the directory index variables
1219          */
1220         fs->super->s_def_hash_version = EXT2_HASH_TEA;
1221         uuid_generate((unsigned char *) fs->super->s_hash_seed);
1222
1223         /*
1224          * Add "jitter" to the superblock's check interval so that we
1225          * don't check all the filesystems at the same time.  We use a
1226          * kludgy hack of using the UUID to derive a random jitter value.
1227          */
1228         for (i = 0, val = 0; i < sizeof(fs->super->s_uuid); i++)
1229                 val += fs->super->s_uuid[i];
1230         fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT;
1231
1232         /*
1233          * Override the creator OS, if applicable
1234          */
1235         if (creator_os && !set_os(fs->super, creator_os)) {
1236                 bb_error_msg_and_die("unknown os - %s", creator_os);
1237         }
1238
1239         /*
1240          * For the Hurd, we will turn off filetype since it doesn't
1241          * support it.
1242          */
1243         if (fs->super->s_creator_os == EXT2_OS_HURD)
1244                 fs->super->s_feature_incompat &=
1245                         ~EXT2_FEATURE_INCOMPAT_FILETYPE;
1246
1247         /*
1248          * Set the volume label...
1249          */
1250         if (volume_label) {
1251                 snprintf(fs->super->s_volume_name, sizeof(fs->super->s_volume_name), "%s", volume_label);
1252         }
1253
1254         /*
1255          * Set the last mount directory
1256          */
1257         if (mount_dir) {
1258                 snprintf(fs->super->s_last_mounted, sizeof(fs->super->s_last_mounted), "%s", mount_dir);
1259         }
1260
1261         if (!quiet || noaction)
1262                 show_stats(fs);
1263
1264         if (noaction)
1265                 return 0;
1266
1267         if (fs->super->s_feature_incompat &
1268             EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
1269                 create_journal_dev(fs);
1270                 return (ext2fs_close(fs) ? 1 : 0);
1271         }
1272
1273         if (bad_blocks_filename)
1274                 read_bb_file(fs, &bb_list, bad_blocks_filename);
1275         if (cflag)
1276                 test_disk(fs, &bb_list);
1277
1278         handle_bad_blocks(fs, bb_list);
1279         fs->stride = fs_stride;
1280         retval = ext2fs_allocate_tables(fs);
1281         mke2fs_error_msg_and_die(retval, "allocate filesystem tables");
1282         if (super_only) {
1283                 fs->super->s_state |= EXT2_ERROR_FS;
1284                 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY);
1285         } else {
1286                 /* rsv must be a power of two (64kB is MD RAID sb alignment) */
1287                 unsigned int rsv = 65536 / fs->blocksize;
1288                 unsigned long blocks = fs->super->s_blocks_count;
1289                 unsigned long start;
1290                 blk_t ret_blk;
1291
1292 #ifdef ZAP_BOOTBLOCK
1293                 zap_sector(fs, 0, 2);
1294 #endif
1295
1296                 /*
1297                  * Wipe out any old MD RAID (or other) metadata at the end
1298                  * of the device.  This will also verify that the device is
1299                  * as large as we think.  Be careful with very small devices.
1300                  */
1301                 start = (blocks & ~(rsv - 1));
1302                 if (start > rsv)
1303                         start -= rsv;
1304                 if (start > 0)
1305                         retval = zero_blocks(fs, start, blocks - start,
1306                                              NULL, &ret_blk, NULL);
1307
1308                 mke2fs_warning_msg(retval, "can't zero block %u at end of filesystem", ret_blk);
1309                 write_inode_tables(fs);
1310                 create_root_dir(fs);
1311                 create_lost_and_found(fs);
1312                 reserve_inodes(fs);
1313                 create_bad_block_inode(fs, bb_list);
1314                 if (fs->super->s_feature_compat &
1315                     EXT2_FEATURE_COMPAT_RESIZE_INO) {
1316                         retval = ext2fs_create_resize_inode(fs);
1317                         mke2fs_error_msg_and_die(retval, "reserve blocks for online resize");
1318                 }
1319         }
1320
1321         if (journal_device) {
1322                 make_journal_device(journal_device, fs, quiet, force);
1323         } else if (journal_size) {
1324                 make_journal_blocks(fs, journal_size, journal_flags, quiet);
1325         }
1326
1327         mke2fs_verbose("Writing superblocks and filesystem accounting information: ");
1328         retval = ext2fs_flush(fs);
1329         mke2fs_warning_msg(retval, "had trouble writing out superblocks");
1330         mke2fs_verbose_done();
1331         if (!quiet && !getenv("MKE2FS_SKIP_CHECK_MSG"))
1332                 print_check_message(fs);
1333         val = ext2fs_close(fs);
1334         return (retval || val) ? 1 : 0;
1335 }