misc/mke2fs.c

   1 /*
   2  * mke2fs.c - Make a ext2fs filesystem.
   3  *
   4  * Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
   5  *      2003, 2004, 2005 by Theodore Ts'o.
   6  *
   7  * %Begin-Header%
   8  * This file may be redistributed under the terms of the GNU Public
   9  * License.
  10  * %End-Header%
  11  */
  12
  13 /* Usage: mke2fs [options] device
  14  *
  15  * The device may be a block device or a image of one, but this isn't
  16  * enforced (but it's not much fun on a character device :-).
  17  */
  18
  19 #include <stdio.h>
  20 #include <string.h>
  21 #include <fcntl.h>
  22 #include <ctype.h>
  23 #include <time.h>
  24 #ifdef __linux__
  25 #include <sys/utsname.h>
  26 #endif
  27 #ifdef HAVE_GETOPT_H
  28 #include <getopt.h>
  29 #else
  30 extern char *optarg;
  31 extern int optind;
  32 #endif
  33 #ifdef HAVE_UNISTD_H
  34 #include <unistd.h>
  35 #endif
  36 #ifdef HAVE_STDLIB_H
  37 #include <stdlib.h>
  38 #endif
  39 #ifdef HAVE_ERRNO_H
  40 #include <errno.h>
  41 #endif
  42 #ifdef HAVE_MNTENT_H
  43 #include <mntent.h>
  44 #endif
  45 #include <sys/ioctl.h>
  46 #include <sys/types.h>
  47
  48 #include "ext2fs/ext2_fs.h"
  49 #include "et/com_err.h"
  50 #include "uuid/uuid.h"
  51 #include "e2p/e2p.h"
  52 #include "ext2fs/ext2fs.h"
  53 #include "util.h"
  54 #include "profile.h"
  55 #include "prof_err.h"
  56 #include "../version.h"
  57 #include "nls-enable.h"
  58
  59 #define STRIDE_LENGTH 8
  60
  61 #ifndef __sparc__
  62 #define ZAP_BOOTBLOCK
  63 #endif
  64
  65 extern int isatty(int);
  66 extern FILE *fpopen(const char *cmd, const char *mode);
  67
  68 const char * program_name = "mke2fs";
  69 const char * device_name /* = NULL */;
  70
  71 /* Command line options */
  72 int     cflag;
  73 int     verbose;
  74 int     quiet;
  75 int     super_only;
  76 int     force;
  77 int     noaction;
  78 int     journal_size;
  79 int     journal_flags;
  80 char    *bad_blocks_filename;
  81 __u32   fs_stride;
  82
  83 struct ext2_super_block fs_param;
  84 char *creator_os;
  85 char *volume_label;
  86 char *mount_dir;
  87 char *journal_device;
  88 int sync_kludge;        /* Set using the MKE2FS_SYNC env. option */
  89
  90 profile_t       profile;
  91
  92 int sys_page_size = 4096;
  93 int linux_version_code = 0;
  94
  95 static void usage(void)
  96 {
  97         fprintf(stderr, _("Usage: %s [-c|-l filename] [-b block-size] "
  98         "[-f fragment-size]\n\t[-i bytes-per-inode] [-I inode-size] "
  99         "[-J journal-options]\n"
 100         "\t[-N number-of-inodes] [-m reserved-blocks-percentage] "
 101         "[-o creator-os]\n\t[-g blocks-per-group] [-L volume-label] "
 102         "[-M last-mounted-directory]\n\t[-O feature[,...]] "
 103         "[-r fs-revision] [-E extended-option[,...]]\n"
 104         "\t[-T fs-type] [-jnqvFSV] device [blocks-count]\n"),
 105                 program_name);
 106         exit(1);
 107 }
 108
 109 static int int_log2(int arg)
 110 {
 111         int     l = 0;
 112
 113         arg >>= 1;
 114         while (arg) {
 115                 l++;
 116                 arg >>= 1;
 117         }
 118         return l;
 119 }
 120
 121 static int int_log10(unsigned int arg)
 122 {
 123         int     l;
 124
 125         for (l=0; arg ; l++)
 126                 arg = arg / 10;
 127         return l;
 128 }
 129
 130 static int parse_version_number(const char *s)
 131 {
 132         int     major, minor, rev;
 133         char    *endptr;
 134         const char *cp = s;
 135
 136         if (!s)
 137                 return 0;
 138         major = strtol(cp, &endptr, 10);
 139         if (cp == endptr || *endptr != '.')
 140                 return 0;
 141         cp = endptr + 1;
 142         minor = strtol(cp, &endptr, 10);
 143         if (cp == endptr || *endptr != '.')
 144                 return 0;
 145         cp = endptr + 1;
 146         rev = strtol(cp, &endptr, 10);
 147         if (cp == endptr)
 148                 return 0;
 149         return ((((major * 256) + minor) * 256) + rev);
 150 }
 151
 152 /*
 153  * Helper function for read_bb_file and test_disk
 154  */
 155 static void invalid_block(ext2_filsys fs EXT2FS_ATTR((unused)), blk_t blk)
 156 {
 157         fprintf(stderr, _("Bad block %u out of range; ignored.\n"), blk);
 158         return;
 159 }
 160
 161 /*
 162  * Reads the bad blocks list from a file
 163  */
 164 static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list,
 165                          const char *bad_blocks_file)
 166 {
 167         FILE            *f;
 168         errcode_t       retval;
 169
 170         f = fopen(bad_blocks_file, "r");
 171         if (!f) {
 172                 com_err("read_bad_blocks_file", errno,
 173                         _("while trying to open %s"), bad_blocks_file);
 174                 exit(1);
 175         }
 176         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 177         fclose (f);
 178         if (retval) {
 179                 com_err("ext2fs_read_bb_FILE", retval,
 180                         _("while reading in list of bad blocks from file"));
 181                 exit(1);
 182         }
 183 }
 184
 185 /*
 186  * Runs the badblocks program to test the disk
 187  */
 188 static void test_disk(ext2_filsys fs, badblocks_list *bb_list)
 189 {
 190         FILE            *f;
 191         errcode_t       retval;
 192         char            buf[1024];
 193
 194         sprintf(buf, "badblocks -b %d -X %s%s%s %u", fs->blocksize,
 195                 quiet ? "" : "-s ", (cflag > 1) ? "-w " : "",
 196                 fs->device_name, fs->super->s_blocks_count-1);
 197         if (verbose)
 198                 printf(_("Running command: %s\n"), buf);
 199         f = popen(buf, "r");
 200         if (!f) {
 201                 com_err("popen", errno,
 202                         _("while trying to run '%s'"), buf);
 203                 exit(1);
 204         }
 205         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 206         pclose(f);
 207         if (retval) {
 208                 com_err("ext2fs_read_bb_FILE", retval,
 209                         _("while processing list of bad blocks from program"));
 210                 exit(1);
 211         }
 212 }
 213
 214 static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list)
 215 {
 216         dgrp_t                  i;
 217         blk_t                   j;
 218         unsigned                must_be_good;
 219         blk_t                   blk;
 220         badblocks_iterate       bb_iter;
 221         errcode_t               retval;
 222         blk_t                   group_block;
 223         int                     group;
 224         int                     group_bad;
 225
 226         if (!bb_list)
 227                 return;
 228
 229         /*
 230          * The primary superblock and group descriptors *must* be
 231          * good; if not, abort.
 232          */
 233         must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks;
 234         for (i = fs->super->s_first_data_block; i <= must_be_good; i++) {
 235                 if (ext2fs_badblocks_list_test(bb_list, i)) {
 236                         fprintf(stderr, _("Block %d in primary "
 237                                 "superblock/group descriptor area bad.\n"), i);
 238                         fprintf(stderr, _("Blocks %u through %u must be good "
 239                                 "in order to build a filesystem.\n"),
 240                                 fs->super->s_first_data_block, must_be_good);
 241                         fputs(_("Aborting....\n"), stderr);
 242                         exit(1);
 243                 }
 244         }
 245
 246         /*
 247          * See if any of the bad blocks are showing up in the backup
 248          * superblocks and/or group descriptors.  If so, issue a
 249          * warning and adjust the block counts appropriately.
 250          */
 251         group_block = fs->super->s_first_data_block +
 252                 fs->super->s_blocks_per_group;
 253
 254         for (i = 1; i < fs->group_desc_count; i++) {
 255                 group_bad = 0;
 256                 for (j=0; j < fs->desc_blocks+1; j++) {
 257                         if (ext2fs_badblocks_list_test(bb_list,
 258                                                        group_block + j)) {
 259                                 if (!group_bad)
 260                                         fprintf(stderr,
 261 _("Warning: the backup superblock/group descriptors at block %u contain\n"
 262 "       bad blocks.\n\n"),
 263                                                 group_block);
 264                                 group_bad++;
 265                                 group = ext2fs_group_of_blk(fs, group_block+j);
 266                                 fs->group_desc[group].bg_free_blocks_count++;
 267                                 fs->super->s_free_blocks_count++;
 268                         }
 269                 }
 270                 group_block += fs->super->s_blocks_per_group;
 271         }
 272
 273         /*
 274          * Mark all the bad blocks as used...
 275          */
 276         retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
 277         if (retval) {
 278                 com_err("ext2fs_badblocks_list_iterate_begin", retval,
 279                         _("while marking bad blocks as used"));
 280                 exit(1);
 281         }
 282         while (ext2fs_badblocks_list_iterate(bb_iter, &blk))
 283                 ext2fs_mark_block_bitmap(fs->block_map, blk);
 284         ext2fs_badblocks_list_iterate_end(bb_iter);
 285 }
 286
 287 /*
 288  * These functions implement a generalized progress meter.
 289  */
 290 struct progress_struct {
 291         char            format[20];
 292         char            backup[80];
 293         __u32           max;
 294         int             skip_progress;
 295 };
 296
 297 static void progress_init(struct progress_struct *progress,
 298                           const char *label,__u32 max)
 299 {
 300         int     i;
 301
 302         memset(progress, 0, sizeof(struct progress_struct));
 303         if (quiet)
 304                 return;
 305
 306         /*
 307          * Figure out how many digits we need
 308          */
 309         i = int_log10(max);
 310         sprintf(progress->format, "%%%dd/%%%dld", i, i);
 311         memset(progress->backup, '\b', sizeof(progress->backup)-1);
 312         progress->backup[sizeof(progress->backup)-1] = 0;
 313         if ((2*i)+1 < (int) sizeof(progress->backup))
 314                 progress->backup[(2*i)+1] = 0;
 315         progress->max = max;
 316
 317         progress->skip_progress = 0;
 318         if (getenv("MKE2FS_SKIP_PROGRESS"))
 319                 progress->skip_progress++;
 320
 321         fputs(label, stdout);
 322         fflush(stdout);
 323 }
 324
 325 static void progress_update(struct progress_struct *progress, __u32 val)
 326 {
 327         if ((progress->format[0] == 0) || progress->skip_progress)
 328                 return;
 329         printf(progress->format, val, progress->max);
 330         fputs(progress->backup, stdout);
 331 }
 332
 333 static void progress_close(struct progress_struct *progress)
 334 {
 335         if (progress->format[0] == 0)
 336                 return;
 337         fputs(_("done                            \n"), stdout);
 338 }
 339
 340
 341 /*
 342  * Helper function which zeros out _num_ blocks starting at _blk_.  In
 343  * case of an error, the details of the error is returned via _ret_blk_
 344  * and _ret_count_ if they are non-NULL pointers.  Returns 0 on
 345  * success, and an error code on an error.
 346  *
 347  * As a special case, if the first argument is NULL, then it will
 348  * attempt to free the static zeroizing buffer.  (This is to keep
 349  * programs that check for memory leaks happy.)
 350  */
 351 static errcode_t zero_blocks(ext2_filsys fs, blk_t blk, int num,
 352                              struct progress_struct *progress,
 353                              blk_t *ret_blk, int *ret_count)
 354 {
 355         int             j, count, next_update, next_update_incr;
 356         static char     *buf;
 357         errcode_t       retval;
 358
 359         /* If fs is null, clean up the static buffer and return */
 360         if (!fs) {
 361                 if (buf) {
 362                         free(buf);
 363                         buf = 0;
 364                 }
 365                 return 0;
 366         }
 367         /* Allocate the zeroizing buffer if necessary */
 368         if (!buf) {
 369                 buf = malloc(fs->blocksize * STRIDE_LENGTH);
 370                 if (!buf) {
 371                         com_err("malloc", ENOMEM,
 372                                 _("while allocating zeroizing buffer"));
 373                         exit(1);
 374                 }
 375                 memset(buf, 0, fs->blocksize * STRIDE_LENGTH);
 376         }
 377         /* OK, do the write loop */
 378         next_update = 0;
 379         next_update_incr = num / 100;
 380         if (next_update_incr < 1)
 381                 next_update_incr = 1;
 382         for (j=0; j < num; j += STRIDE_LENGTH, blk += STRIDE_LENGTH) {
 383                 count = num - j;
 384                 if (count > STRIDE_LENGTH)
 385                         count = STRIDE_LENGTH;
 386                 retval = io_channel_write_blk(fs->io, blk, count, buf);
 387                 if (retval) {
 388                         if (ret_count)
 389                                 *ret_count = count;
 390                         if (ret_blk)
 391                                 *ret_blk = blk;
 392                         return retval;
 393                 }
 394                 if (progress && j > next_update) {
 395                         next_update += num / 100;
 396                         progress_update(progress, blk);
 397                 }
 398         }
 399         return 0;
 400 }
 401
 402 static void write_inode_tables(ext2_filsys fs)
 403 {
 404         errcode_t       retval;
 405         blk_t           blk;
 406         dgrp_t          i;
 407         int             num;
 408         struct progress_struct progress;
 409         int             lazy_flag = 0;
 410
 411         if (quiet)
 412                 memset(&progress, 0, sizeof(progress));
 413         else
 414                 progress_init(&progress, _("Writing inode tables: "),
 415                               fs->group_desc_count);
 416
 417         if (EXT2_HAS_COMPAT_FEATURE(fs->super,
 418                                     EXT2_FEATURE_COMPAT_LAZY_BG))
 419                 lazy_flag = 1;
 420
 421         for (i = 0; i < fs->group_desc_count; i++) {
 422                 progress_update(&progress, i);
 423
 424                 blk = fs->group_desc[i].bg_inode_table;
 425                 num = fs->inode_blocks_per_group;
 426
 427                 if (!(lazy_flag &&
 428                       (fs->group_desc[i].bg_flags & EXT2_BG_INODE_UNINIT))) {
 429                         retval = zero_blocks(fs, blk, num, 0, &blk, &num);
 430                         if (retval) {
 431                                 fprintf(stderr, _("\nCould not write %d "
 432                                 "blocks in inode table starting at %u: %s\n"),
 433                                         num, blk, error_message(retval));
 434                                 exit(1);
 435                         }
 436                 }
 437                 if (sync_kludge) {
 438                         if (sync_kludge == 1)
 439                                 sync();
 440                         else if ((i % sync_kludge) == 0)
 441                                 sync();
 442                 }
 443         }
 444         zero_blocks(0, 0, 0, 0, 0, 0);
 445         progress_close(&progress);
 446 }
 447
 448 static void setup_lazy_bg(ext2_filsys fs)
 449 {
 450         dgrp_t i;
 451         int blks;
 452         struct ext2_super_block *sb = fs->super;
 453         struct ext2_group_desc *bg = fs->group_desc;
 454
 455         if (EXT2_HAS_COMPAT_FEATURE(fs->super,
 456                                     EXT2_FEATURE_COMPAT_LAZY_BG)) {
 457                 for (i = 0; i < fs->group_desc_count; i++, bg++) {
 458                         if ((i == 0) ||
 459                             (i == fs->group_desc_count-1))
 460                                 continue;
 461                         if (bg->bg_free_inodes_count ==
 462                             sb->s_inodes_per_group) {
 463                                 bg->bg_free_inodes_count = 0;
 464                                 bg->bg_flags |= EXT2_BG_INODE_UNINIT;
 465                                 sb->s_free_inodes_count -=
 466                                         sb->s_inodes_per_group;
 467                         }
 468                         blks = ext2fs_super_and_bgd_loc(fs, i, 0, 0, 0, 0);
 469                         if (bg->bg_free_blocks_count == blks) {
 470                                 bg->bg_free_blocks_count = 0;
 471                                 bg->bg_flags |= EXT2_BG_BLOCK_UNINIT;
 472                                 sb->s_free_blocks_count -= blks;
 473                         }
 474                 }
 475         }
 476 }
 477
 478
 479 static void create_root_dir(ext2_filsys fs)
 480 {
 481         errcode_t               retval;
 482         struct ext2_inode       inode;
 483         __u32                   uid, gid;
 484
 485         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0);
 486         if (retval) {
 487                 com_err("ext2fs_mkdir", retval, _("while creating root dir"));
 488                 exit(1);
 489         }
 490         if (geteuid()) {
 491                 retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode);
 492                 if (retval) {
 493                         com_err("ext2fs_read_inode", retval,
 494                                 _("while reading root inode"));
 495                         exit(1);
 496                 }
 497                 uid = getuid();
 498                 inode.i_uid = uid;
 499                 ext2fs_set_i_uid_high(inode, uid >> 16);
 500                 if (uid) {
 501                         gid = getgid();
 502                         inode.i_gid = gid;
 503                         ext2fs_set_i_gid_high(inode, gid >> 16);
 504                 }
 505                 retval = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode);
 506                 if (retval) {
 507                         com_err("ext2fs_write_inode", retval,
 508                                 _("while setting root inode ownership"));
 509                         exit(1);
 510                 }
 511         }
 512 }
 513
 514 static void create_lost_and_found(ext2_filsys fs)
 515 {
 516         errcode_t               retval;
 517         ext2_ino_t              ino;
 518         const char              *name = "lost+found";
 519         int                     i;
 520         int                     lpf_size = 0;
 521
 522         fs->umask = 077;
 523         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name);
 524         if (retval) {
 525                 com_err("ext2fs_mkdir", retval,
 526                         _("while creating /lost+found"));
 527                 exit(1);
 528         }
 529
 530         retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
 531         if (retval) {
 532                 com_err("ext2_lookup", retval,
 533                         _("while looking up /lost+found"));
 534                 exit(1);
 535         }
 536
 537         for (i=1; i < EXT2_NDIR_BLOCKS; i++) {
 538                 if ((lpf_size += fs->blocksize) >= 16*1024)
 539                         break;
 540                 retval = ext2fs_expand_dir(fs, ino);
 541                 if (retval) {
 542                         com_err("ext2fs_expand_dir", retval,
 543                                 _("while expanding /lost+found"));
 544                         exit(1);
 545                 }
 546         }
 547 }
 548
 549 static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list)
 550 {
 551         errcode_t       retval;
 552
 553         ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO);
 554         fs->group_desc[0].bg_free_inodes_count--;
 555         fs->super->s_free_inodes_count--;
 556         retval = ext2fs_update_bb_inode(fs, bb_list);
 557         if (retval) {
 558                 com_err("ext2fs_update_bb_inode", retval,
 559                         _("while setting bad block inode"));
 560                 exit(1);
 561         }
 562
 563 }
 564
 565 static void reserve_inodes(ext2_filsys fs)
 566 {
 567         ext2_ino_t      i;
 568         int             group;
 569
 570         for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++) {
 571                 ext2fs_mark_inode_bitmap(fs->inode_map, i);
 572                 group = ext2fs_group_of_ino(fs, i);
 573                 fs->group_desc[group].bg_free_inodes_count--;
 574                 fs->super->s_free_inodes_count--;
 575         }
 576         ext2fs_mark_ib_dirty(fs);
 577 }
 578
 579 #define BSD_DISKMAGIC   (0x82564557UL)  /* The disk magic number */
 580 #define BSD_MAGICDISK   (0x57455682UL)  /* The disk magic number reversed */
 581 #define BSD_LABEL_OFFSET        64
 582
 583 static void zap_sector(ext2_filsys fs, int sect, int nsect)
 584 {
 585         char *buf;
 586         int retval;
 587         unsigned int *magic;
 588
 589         buf = malloc(512*nsect);
 590         if (!buf) {
 591                 printf(_("Out of memory erasing sectors %d-%d\n"),
 592                        sect, sect + nsect - 1);
 593                 exit(1);
 594         }
 595
 596         if (sect == 0) {
 597                 /* Check for a BSD disklabel, and don't erase it if so */
 598                 retval = io_channel_read_blk(fs->io, 0, -512, buf);
 599                 if (retval)
 600                         fprintf(stderr,
 601                                 _("Warning: could not read block 0: %s\n"),
 602                                 error_message(retval));
 603                 else {
 604                         magic = (unsigned int *) (buf + BSD_LABEL_OFFSET);
 605                         if ((*magic == BSD_DISKMAGIC) ||
 606                             (*magic == BSD_MAGICDISK))
 607                                 return;
 608                 }
 609         }
 610
 611         memset(buf, 0, 512*nsect);
 612         io_channel_set_blksize(fs->io, 512);
 613         retval = io_channel_write_blk(fs->io, sect, -512*nsect, buf);
 614         io_channel_set_blksize(fs->io, fs->blocksize);
 615         free(buf);
 616         if (retval)
 617                 fprintf(stderr, _("Warning: could not erase sector %d: %s\n"),
 618                         sect, error_message(retval));
 619 }
 620
 621 static void create_journal_dev(ext2_filsys fs)
 622 {
 623         struct progress_struct progress;
 624         errcode_t               retval;
 625         char                    *buf;
 626         blk_t                   blk;
 627         int                     count;
 628
 629         retval = ext2fs_create_journal_superblock(fs,
 630                                   fs->super->s_blocks_count, 0, &buf);
 631         if (retval) {
 632                 com_err("create_journal_dev", retval,
 633                         _("while initializing journal superblock"));
 634                 exit(1);
 635         }
 636         if (quiet)
 637                 memset(&progress, 0, sizeof(progress));
 638         else
 639                 progress_init(&progress, _("Zeroing journal device: "),
 640                               fs->super->s_blocks_count);
 641
 642         retval = zero_blocks(fs, 0, fs->super->s_blocks_count,
 643                              &progress, &blk, &count);
 644         if (retval) {
 645                 com_err("create_journal_dev", retval,
 646                         _("while zeroing journal device (block %u, count %d)"),
 647                         blk, count);
 648                 exit(1);
 649         }
 650         zero_blocks(0, 0, 0, 0, 0, 0);
 651
 652         retval = io_channel_write_blk(fs->io,
 653                                       fs->super->s_first_data_block+1,
 654                                       1, buf);
 655         if (retval) {
 656                 com_err("create_journal_dev", retval,
 657                         _("while writing journal superblock"));
 658                 exit(1);
 659         }
 660         progress_close(&progress);
 661 }
 662
 663 static void show_stats(ext2_filsys fs)
 664 {
 665         struct ext2_super_block *s = fs->super;
 666         char                    buf[80];
 667         char                    *os;
 668         blk_t                   group_block;
 669         dgrp_t                  i;
 670         int                     need, col_left;
 671
 672         if (fs_param.s_blocks_count != s->s_blocks_count)
 673                 fprintf(stderr, _("warning: %u blocks unused.\n\n"),
 674                        fs_param.s_blocks_count - s->s_blocks_count);
 675
 676         memset(buf, 0, sizeof(buf));
 677         strncpy(buf, s->s_volume_name, sizeof(s->s_volume_name));
 678         printf(_("Filesystem label=%s\n"), buf);
 679         fputs(_("OS type: "), stdout);
 680         os = e2p_os2string(fs->super->s_creator_os);
 681         fputs(os, stdout);
 682         free(os);
 683         printf("\n");
 684         printf(_("Block size=%u (log=%u)\n"), fs->blocksize,
 685                 s->s_log_block_size);
 686         printf(_("Fragment size=%u (log=%u)\n"), fs->fragsize,
 687                 s->s_log_frag_size);
 688         printf(_("%u inodes, %u blocks\n"), s->s_inodes_count,
 689                s->s_blocks_count);
 690         printf(_("%u blocks (%2.2f%%) reserved for the super user\n"),
 691                 s->s_r_blocks_count,
 692                100.0 * s->s_r_blocks_count / s->s_blocks_count);
 693         printf(_("First data block=%u\n"), s->s_first_data_block);
 694         if (s->s_reserved_gdt_blocks)
 695                 printf(_("Maximum filesystem blocks=%lu\n"),
 696                        (s->s_reserved_gdt_blocks + fs->desc_blocks) *
 697                        (fs->blocksize / sizeof(struct ext2_group_desc)) *
 698                        s->s_blocks_per_group);
 699         if (fs->group_desc_count > 1)
 700                 printf(_("%u block groups\n"), fs->group_desc_count);
 701         else
 702                 printf(_("%u block group\n"), fs->group_desc_count);
 703         printf(_("%u blocks per group, %u fragments per group\n"),
 704                s->s_blocks_per_group, s->s_frags_per_group);
 705         printf(_("%u inodes per group\n"), s->s_inodes_per_group);
 706
 707         if (fs->group_desc_count == 1) {
 708                 printf("\n");
 709                 return;
 710         }
 711
 712         printf(_("Superblock backups stored on blocks: "));
 713         group_block = s->s_first_data_block;
 714         col_left = 0;
 715         for (i = 1; i < fs->group_desc_count; i++) {
 716                 group_block += s->s_blocks_per_group;
 717                 if (!ext2fs_bg_has_super(fs, i))
 718                         continue;
 719                 if (i != 1)
 720                         printf(", ");
 721                 need = int_log10(group_block) + 2;
 722                 if (need > col_left) {
 723                         printf("\n\t");
 724                         col_left = 72;
 725                 }
 726                 col_left -= need;
 727                 printf("%u", group_block);
 728         }
 729         printf("\n\n");
 730 }
 731
 732 /*
 733  * Set the S_CREATOR_OS field.  Return true if OS is known,
 734  * otherwise, 0.
 735  */
 736 static int set_os(struct ext2_super_block *sb, char *os)
 737 {
 738         if (isdigit (*os))
 739                 sb->s_creator_os = atoi (os);
 740         else if (strcasecmp(os, "linux") == 0)
 741                 sb->s_creator_os = EXT2_OS_LINUX;
 742         else if (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0)
 743                 sb->s_creator_os = EXT2_OS_HURD;
 744         else if (strcasecmp(os, "masix") == 0)
 745                 sb->s_creator_os = EXT2_OS_MASIX;
 746         else if (strcasecmp(os, "freebsd") == 0)
 747                 sb->s_creator_os = EXT2_OS_FREEBSD;
 748         else if (strcasecmp(os, "lites") == 0)
 749                 sb->s_creator_os = EXT2_OS_LITES;
 750         else
 751                 return 0;
 752         return 1;
 753 }
 754
 755 #define PATH_SET "PATH=/sbin"
 756
 757 static void parse_extended_opts(struct ext2_super_block *param,
 758                                 const char *opts)
 759 {
 760         char    *buf, *token, *next, *p, *arg, *badopt = "";
 761         int     len;
 762         int     r_usage = 0;
 763
 764         len = strlen(opts);
 765         buf = malloc(len+1);
 766         if (!buf) {
 767                 fprintf(stderr,
 768                         _("Couldn't allocate memory to parse options!\n"));
 769                 exit(1);
 770         }
 771         strcpy(buf, opts);
 772         for (token = buf; token && *token; token = next) {
 773                 p = strchr(token, ',');
 774                 next = 0;
 775                 if (p) {
 776                         *p = 0;
 777                         next = p+1;
 778                 }
 779                 arg = strchr(token, '=');
 780                 if (arg) {
 781                         *arg = 0;
 782                         arg++;
 783                 }
 784                 if (strcmp(token, "stride") == 0) {
 785                         if (!arg) {
 786                                 r_usage++;
 787                                 badopt = token;
 788                                 continue;
 789                         }
 790                         param->s_raid_stride = strtoul(arg, &p, 0);
 791                         if (*p || (param->s_raid_stride == 0)) {
 792                                 fprintf(stderr,
 793                                         _("Invalid stride parameter: %s\n"),
 794                                         arg);
 795                                 r_usage++;
 796                                 continue;
 797                         }
 798                 } else if (strcmp(token, "stripe-width") == 0 ||
 799                            strcmp(token, "stripe_width") == 0) {
 800                         if (!arg) {
 801                                 r_usage++;
 802                                 badopt = token;
 803                                 continue;
 804                         }
 805                         param->s_raid_stripe_width = strtoul(arg, &p, 0);
 806                         if (*p || (param->s_raid_stripe_width == 0)) {
 807                                 fprintf(stderr,
 808                                         _("Invalid stripe-width parameter: %s\n"),
 809                                         arg);
 810                                 r_usage++;
 811                                 continue;
 812                         }
 813                 } else if (!strcmp(token, "resize")) {
 814                         unsigned long resize, bpg, rsv_groups;
 815                         unsigned long group_desc_count, desc_blocks;
 816                         unsigned int gdpb, blocksize;
 817                         int rsv_gdb;
 818
 819                         if (!arg) {
 820                                 r_usage++;
 821                                 badopt = token;
 822                                 continue;
 823                         }
 824
 825                         resize = parse_num_blocks(arg,
 826                                                   param->s_log_block_size);
 827
 828                         if (resize == 0) {
 829                                 fprintf(stderr,
 830                                         _("Invalid resize parameter: %s\n"),
 831                                         arg);
 832                                 r_usage++;
 833                                 continue;
 834                         }
 835                         if (resize <= param->s_blocks_count) {
 836                                 fprintf(stderr,
 837                                         _("The resize maximum must be greater "
 838                                           "than the filesystem size.\n"));
 839                                 r_usage++;
 840                                 continue;
 841                         }
 842
 843                         blocksize = EXT2_BLOCK_SIZE(param);
 844                         bpg = param->s_blocks_per_group;
 845                         if (!bpg)
 846                                 bpg = blocksize * 8;
 847                         gdpb = blocksize / sizeof(struct ext2_group_desc);
 848                         group_desc_count =
 849                                 ext2fs_div_ceil(param->s_blocks_count, bpg);
 850                         desc_blocks = (group_desc_count +
 851                                        gdpb - 1) / gdpb;
 852                         rsv_groups = ext2fs_div_ceil(resize, bpg);
 853                         rsv_gdb = ext2fs_div_ceil(rsv_groups, gdpb) -
 854                                 desc_blocks;
 855                         if (rsv_gdb > (int) EXT2_ADDR_PER_BLOCK(param))
 856                                 rsv_gdb = EXT2_ADDR_PER_BLOCK(param);
 857
 858                         if (rsv_gdb > 0) {
 859                                 if (param->s_rev_level == EXT2_GOOD_OLD_REV) {
 860                                         fprintf(stderr,
 861         _("On-line resizing not supported with revision 0 filesystems\n"));
 862                                         free(buf);
 863                                         exit(1);
 864                                 }
 865                                 param->s_feature_compat |=
 866                                         EXT2_FEATURE_COMPAT_RESIZE_INODE;
 867
 868                                 param->s_reserved_gdt_blocks = rsv_gdb;
 869                         }
 870                 } else if (!strcmp(token, "test_fs")) {
 871                         param->s_flags |= EXT2_FLAGS_TEST_FILESYS;
 872                 } else {
 873                         r_usage++;
 874                         badopt = token;
 875                 }
 876         }
 877         if (r_usage) {
 878                 fprintf(stderr, _("\nBad option(s) specified: %s\n\n"
 879                         "Extended options are separated by commas, "
 880                         "and may take an argument which\n"
 881                         "\tis set off by an equals ('=') sign.\n\n"
 882                         "Valid extended options are:\n"
 883                         "\tstride=<RAID per-disk data chunk in blocks>\n"
 884                         "\tstripe-width=<RAID stride * data disks in blocks>\n"
 885                         "\tresize=<resize maximum size in blocks>\n\n"
 886                         "\ttest_fs\n"),
 887                         badopt);
 888                 free(buf);
 889                 exit(1);
 890         }
 891         if (param->s_raid_stride &&
 892             (param->s_raid_stripe_width % param->s_raid_stride) != 0)
 893                 fprintf(stderr, _("\nWarning: RAID stripe-width %u not an even "
 894                                   "multiple of stride %u.\n\n"),
 895                         param->s_raid_stripe_width, param->s_raid_stride);
 896
 897         free(buf);
 898 }
 899
 900 static __u32 ok_features[3] = {
 901         /* Compat */
 902         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 903                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 904                 EXT2_FEATURE_COMPAT_DIR_INDEX |
 905                 EXT2_FEATURE_COMPAT_LAZY_BG |
 906                 EXT2_FEATURE_COMPAT_EXT_ATTR,
 907         /* Incompat */
 908         EXT2_FEATURE_INCOMPAT_FILETYPE|
 909                 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|
 910                 EXT2_FEATURE_INCOMPAT_META_BG,
 911         /* R/O compat */
 912         EXT2_FEATURE_RO_COMPAT_LARGE_FILE|
 913                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
 914 };
 915
 916
 917 static void syntax_err_report(const char *filename, long err, int line_num)
 918 {
 919         fprintf(stderr,
 920                 _("Syntax error in mke2fs config file (%s, line #%d)\n\t%s\n"),
 921                 filename, line_num, error_message(err));
 922         exit(1);
 923 }
 924
 925 static const char *config_fn[] = { ROOT_SYSCONFDIR "/mke2fs.conf", 0 };
 926
 927 static void edit_feature(const char *str, __u32 *compat_array)
 928 {
 929         if (!str)
 930                 return;
 931
 932         if (e2p_edit_feature(str, compat_array, ok_features)) {
 933                 fprintf(stderr, _("Invalid filesystem option set: %s\n"),
 934                         str);
 935                 exit(1);
 936         }
 937 }
 938
 939 extern const char *mke2fs_default_profile;
 940 static const char *default_files[] = { "<default>", 0 };
 941
 942 static void PRS(int argc, char *argv[])
 943 {
 944         int             b, c;
 945         int             size;
 946         char            *tmp, *tmp2;
 947         int             blocksize = 0;
 948         int             inode_ratio = 0;
 949         int             inode_size = 0;
 950         double          reserved_ratio = 5.0;
 951         int             sector_size = 0;
 952         int             show_version_only = 0;
 953         unsigned long long num_inodes = 0; /* unsigned long long to catch too-large input */
 954         errcode_t       retval;
 955         char *          oldpath = getenv("PATH");
 956         char *          extended_opts = 0;
 957         const char *    fs_type = 0;
 958         blk_t           dev_size;
 959 #ifdef __linux__
 960         struct          utsname ut;
 961 #endif
 962         long            sysval;
 963         int             s_opt = -1, r_opt = -1;
 964         char            *fs_features = 0;
 965         int             use_bsize;
 966         char            *newpath;
 967         int             pathlen = sizeof(PATH_SET) + 1;
 968
 969         if (oldpath)
 970                 pathlen += strlen(oldpath);
 971         newpath = malloc(pathlen);
 972         strcpy(newpath, PATH_SET);
 973
 974         /* Update our PATH to include /sbin  */
 975         if (oldpath) {
 976                 strcat (newpath, ":");
 977                 strcat (newpath, oldpath);
 978         }
 979         putenv (newpath);
 980
 981         tmp = getenv("MKE2FS_SYNC");
 982         if (tmp)
 983                 sync_kludge = atoi(tmp);
 984
 985         /* Determine the system page size if possible */
 986 #ifdef HAVE_SYSCONF
 987 #if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE))
 988 #define _SC_PAGESIZE _SC_PAGE_SIZE
 989 #endif
 990 #ifdef _SC_PAGESIZE
 991         sysval = sysconf(_SC_PAGESIZE);
 992         if (sysval > 0)
 993                 sys_page_size = sysval;
 994 #endif /* _SC_PAGESIZE */
 995 #endif /* HAVE_SYSCONF */
 996
 997         if ((tmp = getenv("MKE2FS_CONFIG")) != NULL)
 998                 config_fn[0] = tmp;
 999         profile_set_syntax_err_cb(syntax_err_report);
1000         retval = profile_init(config_fn, &profile);
1001         if (retval == ENOENT) {
1002                 profile_init(default_files, &profile);
1003                 profile_set_default(profile, mke2fs_default_profile);
1004         }
1005
1006         setbuf(stdout, NULL);
1007         setbuf(stderr, NULL);
1008         add_error_table(&et_ext2_error_table);
1009         add_error_table(&et_prof_error_table);
1010         memset(&fs_param, 0, sizeof(struct ext2_super_block));
1011         fs_param.s_rev_level = 1;  /* Create revision 1 filesystems now */
1012
1013 #ifdef __linux__
1014         if (uname(&ut)) {
1015                 perror("uname");
1016                 exit(1);
1017         }
1018         linux_version_code = parse_version_number(ut.release);
1019         if (linux_version_code && linux_version_code < (2*65536 + 2*256))
1020                 fs_param.s_rev_level = 0;
1021 #endif
1022
1023         if (argc && *argv) {
1024                 program_name = get_progname(*argv);
1025
1026                 /* If called as mkfs.ext3, create a journal inode */
1027                 if (!strcmp(program_name, "mkfs.ext3"))
1028                         journal_size = -1;
1029         }
1030
1031         while ((c = getopt (argc, argv,
1032                     "b:cf:g:i:jl:m:no:qr:s:tvE:FI:J:L:M:N:O:R:ST:V")) != EOF) {
1033                 switch (c) {
1034                 case 'b':
1035                         blocksize = strtol(optarg, &tmp, 0);
1036                         b = (blocksize > 0) ? blocksize : -blocksize;
1037                         if (b < EXT2_MIN_BLOCK_SIZE ||
1038                             b > EXT2_MAX_BLOCK_SIZE || *tmp) {
1039                                 com_err(program_name, 0,
1040                                         _("invalid block size - %s"), optarg);
1041                                 exit(1);
1042                         }
1043                         if (blocksize > 4096)
1044                                 fprintf(stderr, _("Warning: blocksize %d not "
1045                                                   "usable on most systems.\n"),
1046                                         blocksize);
1047                         if (blocksize > 0)
1048                                 fs_param.s_log_block_size =
1049                                         int_log2(blocksize >>
1050                                                  EXT2_MIN_BLOCK_LOG_SIZE);
1051                         break;
1052                 case 'c':       /* Check for bad blocks */
1053                 case 't':       /* deprecated */
1054                         cflag++;
1055                         break;
1056                 case 'f':
1057                         size = strtoul(optarg, &tmp, 0);
1058                         if (size < EXT2_MIN_BLOCK_SIZE ||
1059                             size > EXT2_MAX_BLOCK_SIZE || *tmp) {
1060                                 com_err(program_name, 0,
1061                                         _("invalid fragment size - %s"),
1062                                         optarg);
1063                                 exit(1);
1064                         }
1065                         fs_param.s_log_frag_size =
1066                                 int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE);
1067                         fprintf(stderr, _("Warning: fragments not supported.  "
1068                                "Ignoring -f option\n"));
1069                         break;
1070                 case 'g':
1071                         fs_param.s_blocks_per_group = strtoul(optarg, &tmp, 0);
1072                         if (*tmp) {
1073                                 com_err(program_name, 0,
1074                                         _("Illegal number for blocks per group"));
1075                                 exit(1);
1076                         }
1077                         if ((fs_param.s_blocks_per_group % 8) != 0) {
1078                                 com_err(program_name, 0,
1079                                 _("blocks per group must be multiple of 8"));
1080                                 exit(1);
1081                         }
1082                         break;
1083                 case 'i':
1084                         inode_ratio = strtoul(optarg, &tmp, 0);
1085                         if (inode_ratio < EXT2_MIN_BLOCK_SIZE ||
1086                             inode_ratio > EXT2_MAX_BLOCK_SIZE * 1024 ||
1087                             *tmp) {
1088                                 com_err(program_name, 0,
1089                                         _("invalid inode ratio %s (min %d/max %d)"),
1090                                         optarg, EXT2_MIN_BLOCK_SIZE,
1091                                         EXT2_MAX_BLOCK_SIZE);
1092                                 exit(1);
1093                         }
1094                         break;
1095                 case 'J':
1096                         parse_journal_opts(optarg);
1097                         break;
1098                 case 'j':
1099                         if (!journal_size)
1100                                 journal_size = -1;
1101                         break;
1102                 case 'l':
1103                         bad_blocks_filename = malloc(strlen(optarg)+1);
1104                         if (!bad_blocks_filename) {
1105                                 com_err(program_name, ENOMEM,
1106                                         _("in malloc for bad_blocks_filename"));
1107                                 exit(1);
1108                         }
1109                         strcpy(bad_blocks_filename, optarg);
1110                         break;
1111                 case 'm':
1112                         reserved_ratio = strtod(optarg, &tmp);
1113                         if (reserved_ratio > 50 || *tmp) {
1114                                 com_err(program_name, 0,
1115                                         _("invalid reserved blocks percent - %s"),
1116                                         optarg);
1117                                 exit(1);
1118                         }
1119                         break;
1120                 case 'n':
1121                         noaction++;
1122                         break;
1123                 case 'o':
1124                         creator_os = optarg;
1125                         break;
1126                 case 'q':
1127                         quiet = 1;
1128                         break;
1129                 case 'r':
1130                         r_opt = strtoul(optarg, &tmp, 0);
1131                         if (*tmp) {
1132                                 com_err(program_name, 0,
1133                                         _("bad revision level - %s"), optarg);
1134                                 exit(1);
1135                         }
1136                         fs_param.s_rev_level = r_opt;
1137                         break;
1138                 case 's':       /* deprecated */
1139                         s_opt = atoi(optarg);
1140                         break;
1141                 case 'I':
1142                         inode_size = strtoul(optarg, &tmp, 0);
1143                         if (*tmp) {
1144                                 com_err(program_name, 0,
1145                                         _("invalid inode size - %s"), optarg);
1146                                 exit(1);
1147                         }
1148                         break;
1149                 case 'v':
1150                         verbose = 1;
1151                         break;
1152                 case 'F':
1153                         force++;
1154                         break;
1155                 case 'L':
1156                         volume_label = optarg;
1157                         break;
1158                 case 'M':
1159                         mount_dir = optarg;
1160                         break;
1161                 case 'N':
1162                         num_inodes = strtoul(optarg, &tmp, 0);
1163                         if (*tmp) {
1164                                 com_err(program_name, 0,
1165                                         _("bad num inodes - %s"), optarg);
1166                                         exit(1);
1167                         }
1168                         break;
1169                 case 'O':
1170                         fs_features = optarg;
1171                         break;
1172                 case 'E':
1173                 case 'R':
1174                         extended_opts = optarg;
1175                         break;
1176                 case 'S':
1177                         super_only = 1;
1178                         break;
1179                 case 'T':
1180                         fs_type = optarg;
1181                         break;
1182                 case 'V':
1183                         /* Print version number and exit */
1184                         show_version_only++;
1185                         break;
1186                 default:
1187                         usage();
1188                 }
1189         }
1190         if ((optind == argc) && !show_version_only)
1191                 usage();
1192         device_name = argv[optind++];
1193
1194         if (!quiet || show_version_only)
1195                 fprintf (stderr, "mke2fs %s (%s)\n", E2FSPROGS_VERSION,
1196                          E2FSPROGS_DATE);
1197
1198         if (show_version_only) {
1199                 fprintf(stderr, _("\tUsing %s\n"),
1200                         error_message(EXT2_ET_BASE));
1201                 exit(0);
1202         }
1203
1204         /*
1205          * If there's no blocksize specified and there is a journal
1206          * device, use it to figure out the blocksize
1207          */
1208         if (blocksize <= 0 && journal_device) {
1209                 ext2_filsys     jfs;
1210                 io_manager      io_ptr;
1211
1212 #ifdef CONFIG_TESTIO_DEBUG
1213                 io_ptr = test_io_manager;
1214                 test_io_backing_manager = unix_io_manager;
1215 #else
1216                 io_ptr = unix_io_manager;
1217 #endif
1218                 retval = ext2fs_open(journal_device,
1219                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1220                                      0, io_ptr, &jfs);
1221                 if (retval) {
1222                         com_err(program_name, retval,
1223                                 _("while trying to open journal device %s\n"),
1224                                 journal_device);
1225                         exit(1);
1226                 }
1227                 if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) {
1228                         com_err(program_name, 0,
1229                                 _("Journal dev blocksize (%d) smaller than "
1230                                   "minimum blocksize %d\n"), jfs->blocksize,
1231                                 -blocksize);
1232                         exit(1);
1233                 }
1234                 blocksize = jfs->blocksize;
1235                 fs_param.s_log_block_size =
1236                         int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
1237                 ext2fs_close(jfs);
1238         }
1239
1240         if (blocksize > sys_page_size) {
1241                 if (!force) {
1242                         com_err(program_name, 0,
1243                                 _("%d-byte blocks too big for system (max %d)"),
1244                                 blocksize, sys_page_size);
1245                         proceed_question();
1246                 }
1247                 fprintf(stderr, _("Warning: %d-byte blocks too big for system "
1248                                   "(max %d), forced to continue\n"),
1249                         blocksize, sys_page_size);
1250         }
1251         if (optind < argc) {
1252                 fs_param.s_blocks_count = parse_num_blocks(argv[optind++],
1253                                 fs_param.s_log_block_size);
1254                 if (!fs_param.s_blocks_count) {
1255                         com_err(program_name, 0, _("invalid blocks count - %s"),
1256                                 argv[optind - 1]);
1257                         exit(1);
1258                 }
1259         }
1260         if (optind < argc)
1261                 usage();
1262
1263         if (!force)
1264                 check_plausibility(device_name);
1265         check_mount(device_name, force, _("filesystem"));
1266
1267         fs_param.s_log_frag_size = fs_param.s_log_block_size;
1268
1269         if (noaction && fs_param.s_blocks_count) {
1270                 dev_size = fs_param.s_blocks_count;
1271                 retval = 0;
1272         } else {
1273         retry:
1274                 retval = ext2fs_get_device_size(device_name,
1275                                                 EXT2_BLOCK_SIZE(&fs_param),
1276                                                 &dev_size);
1277                 if ((retval == EFBIG) &&
1278                     (blocksize == 0) &&
1279                     (fs_param.s_log_block_size == 0)) {
1280                         fs_param.s_log_block_size = 2;
1281                         blocksize = 4096;
1282                         goto retry;
1283                 }
1284         }
1285
1286         if (retval && (retval != EXT2_ET_UNIMPLEMENTED)) {
1287                 com_err(program_name, retval,
1288                         _("while trying to determine filesystem size"));
1289                 exit(1);
1290         }
1291         if (!fs_param.s_blocks_count) {
1292                 if (retval == EXT2_ET_UNIMPLEMENTED) {
1293                         com_err(program_name, 0,
1294                                 _("Couldn't determine device size; you "
1295                                 "must specify\nthe size of the "
1296                                 "filesystem\n"));
1297                         exit(1);
1298                 } else {
1299                         if (dev_size == 0) {
1300                                 com_err(program_name, 0,
1301                                 _("Device size reported to be zero.  "
1302                                   "Invalid partition specified, or\n\t"
1303                                   "partition table wasn't reread "
1304                                   "after running fdisk, due to\n\t"
1305                                   "a modified partition being busy "
1306                                   "and in use.  You may need to reboot\n\t"
1307                                   "to re-read your partition table.\n"
1308                                   ));
1309                                 exit(1);
1310                         }
1311                         fs_param.s_blocks_count = dev_size;
1312                         if (sys_page_size > EXT2_BLOCK_SIZE(&fs_param))
1313                                 fs_param.s_blocks_count &= ~((sys_page_size /
1314                                            EXT2_BLOCK_SIZE(&fs_param))-1);
1315                 }
1316
1317         } else if (!force && (fs_param.s_blocks_count > dev_size)) {
1318                 com_err(program_name, 0,
1319                         _("Filesystem larger than apparent device size."));
1320                 proceed_question();
1321         }
1322
1323         if (!fs_type) {
1324                 int megs = (__u64)fs_param.s_blocks_count *
1325                         (EXT2_BLOCK_SIZE(&fs_param) / 1024) / 1024;
1326
1327                 if (fs_param.s_feature_incompat &
1328                     EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)
1329                         fs_type = "journal";
1330                 else if (megs <= 3)
1331                         fs_type = "floppy";
1332                 else if (megs <= 512)
1333                         fs_type = "small";
1334                 else
1335                         fs_type = "default";
1336         }
1337
1338         /* Figure out what features should be enabled */
1339
1340         tmp = tmp2 = NULL;
1341         if (fs_param.s_rev_level != EXT2_GOOD_OLD_REV) {
1342                 profile_get_string(profile, "defaults", "base_features", 0,
1343                                    "sparse_super,filetype,resize_inode,dir_index",
1344                                    &tmp);
1345                 profile_get_string(profile, "fs_types", fs_type,
1346                                    "base_features", tmp, &tmp2);
1347                 edit_feature(tmp2, &fs_param.s_feature_compat);
1348                 free(tmp);
1349                 free(tmp2);
1350
1351                 tmp = tmp2 = NULL;
1352                 profile_get_string(profile, "defaults", "default_features", 0,
1353                                    "", &tmp);
1354                 profile_get_string(profile, "fs_types", fs_type,
1355                                    "default_features", tmp, &tmp2);
1356         }
1357         edit_feature(fs_features ? fs_features : tmp2,
1358                      &fs_param.s_feature_compat);
1359         if (tmp)
1360                 free(tmp);
1361         if (tmp2)
1362                 free(tmp2);
1363
1364         if (r_opt == EXT2_GOOD_OLD_REV &&
1365             (fs_param.s_feature_compat || fs_param.s_feature_incompat ||
1366              fs_param.s_feature_incompat)) {
1367                 fprintf(stderr, _("Filesystem features not supported "
1368                                   "with revision 0 filesystems\n"));
1369                 exit(1);
1370         }
1371
1372         if (s_opt > 0) {
1373                 if (r_opt == EXT2_GOOD_OLD_REV) {
1374                         fprintf(stderr, _("Sparse superblocks not supported "
1375                                   "with revision 0 filesystems\n"));
1376                         exit(1);
1377                 }
1378                 fs_param.s_feature_ro_compat |=
1379                         EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1380         } else if (s_opt == 0)
1381                 fs_param.s_feature_ro_compat &=
1382                         ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1383
1384         if (journal_size != 0) {
1385                 if (r_opt == EXT2_GOOD_OLD_REV) {
1386                         fprintf(stderr, _("Journals not supported "
1387                                   "with revision 0 filesystems\n"));
1388                         exit(1);
1389                 }
1390                 fs_param.s_feature_compat |=
1391                         EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1392         }
1393
1394         if (fs_param.s_feature_incompat &
1395             EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
1396                 reserved_ratio = 0;
1397                 fs_param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV;
1398                 fs_param.s_feature_compat = 0;
1399                 fs_param.s_feature_ro_compat = 0;
1400         }
1401
1402         /* Set first meta blockgroup via an environment variable */
1403         /* (this is mostly for debugging purposes) */
1404         if ((fs_param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) &&
1405             ((tmp = getenv("MKE2FS_FIRST_META_BG"))))
1406                 fs_param.s_first_meta_bg = atoi(tmp);
1407
1408         /* Get the hardware sector size, if available */
1409         retval = ext2fs_get_device_sectsize(device_name, &sector_size);
1410         if (retval) {
1411                 com_err(program_name, retval,
1412                         _("while trying to determine hardware sector size"));
1413                 exit(1);
1414         }
1415
1416         if ((tmp = getenv("MKE2FS_DEVICE_SECTSIZE")) != NULL)
1417                 sector_size = atoi(tmp);
1418
1419         if (blocksize <= 0) {
1420                 profile_get_integer(profile, "defaults", "blocksize", 0,
1421                                     4096, &use_bsize);
1422                 profile_get_integer(profile, "fs_types", fs_type,
1423                                     "blocksize", use_bsize, &use_bsize);
1424
1425                 if (use_bsize == -1) {
1426                         use_bsize = sys_page_size;
1427                         if ((linux_version_code < (2*65536 + 6*256)) &&
1428                             (use_bsize > 4096))
1429                                 use_bsize = 4096;
1430                 }
1431                 if (sector_size && use_bsize < sector_size)
1432                         use_bsize = sector_size;
1433                 if ((blocksize < 0) && (use_bsize < (-blocksize)))
1434                         use_bsize = -blocksize;
1435                 blocksize = use_bsize;
1436                 fs_param.s_blocks_count /= blocksize / 1024;
1437         }
1438
1439         if (inode_ratio == 0) {
1440                 profile_get_integer(profile, "defaults", "inode_ratio", 0,
1441                                     8192, &inode_ratio);
1442                 profile_get_integer(profile, "fs_types", fs_type,
1443                                     "inode_ratio", inode_ratio,
1444                                     &inode_ratio);
1445
1446                 if (inode_ratio < blocksize)
1447                         inode_ratio = blocksize;
1448         }
1449
1450         fs_param.s_log_frag_size = fs_param.s_log_block_size =
1451                 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
1452
1453         blocksize = EXT2_BLOCK_SIZE(&fs_param);
1454
1455         if (extended_opts)
1456                 parse_extended_opts(&fs_param, extended_opts);
1457
1458         /* Since sparse_super is the default, we would only have a problem
1459          * here if it was explicitly disabled.
1460          */
1461         if ((fs_param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE) &&
1462             !(fs_param.s_feature_ro_compat&EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1463                 com_err(program_name, 0,
1464                         _("reserved online resize blocks not supported "
1465                           "on non-sparse filesystem"));
1466                 exit(1);
1467         }
1468
1469         if (fs_param.s_blocks_per_group) {
1470                 if (fs_param.s_blocks_per_group < 256 ||
1471                     fs_param.s_blocks_per_group > 8 * (unsigned) blocksize) {
1472                         com_err(program_name, 0,
1473                                 _("blocks per group count out of range"));
1474                         exit(1);
1475                 }
1476         }
1477
1478         if (!force && fs_param.s_blocks_count >= ((unsigned) 1 << 31)) {
1479                 com_err(program_name, 0,
1480                         _("Filesystem too large.  No more than 2**31-1 blocks\n"
1481                           "\t (8TB using a blocksize of 4k) are currently supported."));
1482              exit(1);
1483         }
1484
1485         if ((blocksize > 4096) &&
1486             (fs_param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL))
1487                 fprintf(stderr, _("\nWarning: some 2.4 kernels do not support "
1488                         "blocksizes greater than 4096\n\tusing ext3.  "
1489                         "Use -b 4096 if this is an issue for you.\n\n"));
1490
1491         if (inode_size == 0) {
1492                 profile_get_integer(profile, "defaults", "inode_size", NULL,
1493                                     0, &inode_size);
1494                 profile_get_integer(profile, "fs_types", fs_type,
1495                                     "inode_size", inode_size,
1496                                     &inode_size);
1497         }
1498
1499         if (inode_size && fs_param.s_rev_level >= EXT2_DYNAMIC_REV) {
1500                 if (inode_size < EXT2_GOOD_OLD_INODE_SIZE ||
1501                     inode_size > EXT2_BLOCK_SIZE(&fs_param) ||
1502                     inode_size & (inode_size - 1)) {
1503                         com_err(program_name, 0,
1504                                 _("invalid inode size %d (min %d/max %d)"),
1505                                 inode_size, EXT2_GOOD_OLD_INODE_SIZE,
1506                                 blocksize);
1507                         exit(1);
1508                 }
1509                 if (inode_size != EXT2_GOOD_OLD_INODE_SIZE)
1510                         fprintf(stderr, _("Warning: %d-byte inodes not usable "
1511                                 "on older systems\n"),
1512                                 inode_size);
1513                 fs_param.s_inode_size = inode_size;
1514         }
1515
1516         /* Make sure number of inodes specified will fit in 32 bits */
1517         if (num_inodes == 0) {
1518                 unsigned long long n;
1519                 n = (unsigned long long) fs_param.s_blocks_count * blocksize / inode_ratio;
1520                 if (n > ~0U) {
1521                         com_err(program_name, 0,
1522                             _("too many inodes (%llu), raise inode ratio?"), n);
1523                         exit(1);
1524                 }
1525         } else if (num_inodes > ~0U) {
1526                 com_err(program_name, 0,
1527                         _("too many inodes (%llu), specify < 2^32 inodes"),
1528                           num_inodes);
1529                 exit(1);
1530         }
1531         /*
1532          * Calculate number of inodes based on the inode ratio
1533          */
1534         fs_param.s_inodes_count = num_inodes ? num_inodes :
1535                 ((__u64) fs_param.s_blocks_count * blocksize)
1536                         / inode_ratio;
1537
1538         if ((((long long)fs_param.s_inodes_count) *
1539              (inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE)) >=
1540             (((long long)fs_param.s_blocks_count) *
1541              EXT2_BLOCK_SIZE(&fs_param))) {
1542                 com_err(program_name, 0, _("inode_size (%u) * inodes_count "
1543                                           "(%u) too big for a\n\t"
1544                                           "filesystem with %lu blocks, "
1545                                           "specify higher inode_ratio (-i)\n\t"
1546                                           "or lower inode count (-N).\n"),
1547                         inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE,
1548                         fs_param.s_inodes_count,
1549                         (unsigned long) fs_param.s_blocks_count);
1550                 exit(1);
1551         }
1552
1553         /*
1554          * Calculate number of blocks to reserve
1555          */
1556         fs_param.s_r_blocks_count = e2p_percent(reserved_ratio,
1557                                                 fs_param.s_blocks_count);
1558 }
1559
1560 int main (int argc, char *argv[])
1561 {
1562         errcode_t       retval = 0;
1563         ext2_filsys     fs;
1564         badblocks_list  bb_list = 0;
1565         int             journal_blocks;
1566         unsigned int    i;
1567         int             val;
1568         io_manager      io_ptr;
1569
1570 #ifdef ENABLE_NLS
1571         setlocale(LC_MESSAGES, "");
1572         setlocale(LC_CTYPE, "");
1573         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1574         textdomain(NLS_CAT_NAME);
1575 #endif
1576         PRS(argc, argv);
1577
1578 #ifdef CONFIG_TESTIO_DEBUG
1579         io_ptr = test_io_manager;
1580         test_io_backing_manager = unix_io_manager;
1581 #else
1582         io_ptr = unix_io_manager;
1583 #endif
1584
1585         /*
1586          * Initialize the superblock....
1587          */
1588         retval = ext2fs_initialize(device_name, EXT2_FLAG_EXCLUSIVE, &fs_param,
1589                                    io_ptr, &fs);
1590         if (retval) {
1591                 com_err(device_name, retval, _("while setting up superblock"));
1592                 exit(1);
1593         }
1594
1595         if (fs_param.s_flags & EXT2_FLAGS_TEST_FILESYS)
1596                 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
1597
1598         /*
1599          * Wipe out the old on-disk superblock
1600          */
1601         if (!noaction)
1602                 zap_sector(fs, 2, 6);
1603
1604         /*
1605          * Generate a UUID for it...
1606          */
1607         uuid_generate(fs->super->s_uuid);
1608
1609         /*
1610          * Initialize the directory index variables
1611          */
1612         fs->super->s_def_hash_version = EXT2_HASH_TEA;
1613         uuid_generate((unsigned char *) fs->super->s_hash_seed);
1614
1615         /*
1616          * Add "jitter" to the superblock's check interval so that we
1617          * don't check all the filesystems at the same time.  We use a
1618          * kludgy hack of using the UUID to derive a random jitter value.
1619          */
1620         for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++)
1621                 val += fs->super->s_uuid[i];
1622         fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT;
1623
1624         /*
1625          * Override the creator OS, if applicable
1626          */
1627         if (creator_os && !set_os(fs->super, creator_os)) {
1628                 com_err (program_name, 0, _("unknown os - %s"), creator_os);
1629                 exit(1);
1630         }
1631
1632         /*
1633          * For the Hurd, we will turn off filetype since it doesn't
1634          * support it.
1635          */
1636         if (fs->super->s_creator_os == EXT2_OS_HURD)
1637                 fs->super->s_feature_incompat &=
1638                         ~EXT2_FEATURE_INCOMPAT_FILETYPE;
1639
1640         /*
1641          * Set the volume label...
1642          */
1643         if (volume_label) {
1644                 memset(fs->super->s_volume_name, 0,
1645                        sizeof(fs->super->s_volume_name));
1646                 strncpy(fs->super->s_volume_name, volume_label,
1647                         sizeof(fs->super->s_volume_name));
1648         }
1649
1650         /*
1651          * Set the last mount directory
1652          */
1653         if (mount_dir) {
1654                 memset(fs->super->s_last_mounted, 0,
1655                        sizeof(fs->super->s_last_mounted));
1656                 strncpy(fs->super->s_last_mounted, mount_dir,
1657                         sizeof(fs->super->s_last_mounted));
1658         }
1659
1660         if (!quiet || noaction)
1661                 show_stats(fs);
1662
1663         if (noaction)
1664                 exit(0);
1665
1666         if (fs->super->s_feature_incompat &
1667             EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
1668                 create_journal_dev(fs);
1669                 exit(ext2fs_close(fs) ? 1 : 0);
1670         }
1671
1672         if (bad_blocks_filename)
1673                 read_bb_file(fs, &bb_list, bad_blocks_filename);
1674         if (cflag)
1675                 test_disk(fs, &bb_list);
1676
1677         handle_bad_blocks(fs, bb_list);
1678         fs->stride = fs_stride = fs->super->s_raid_stride;
1679         retval = ext2fs_allocate_tables(fs);
1680         if (retval) {
1681                 com_err(program_name, retval,
1682                         _("while trying to allocate filesystem tables"));
1683                 exit(1);
1684         }
1685         if (super_only) {
1686                 fs->super->s_state |= EXT2_ERROR_FS;
1687                 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY);
1688         } else {
1689                 /* rsv must be a power of two (64kB is MD RAID sb alignment) */
1690                 unsigned int rsv = 65536 / fs->blocksize;
1691                 unsigned long blocks = fs->super->s_blocks_count;
1692                 unsigned long start;
1693                 blk_t ret_blk;
1694
1695 #ifdef ZAP_BOOTBLOCK
1696                 zap_sector(fs, 0, 2);
1697 #endif
1698
1699                 /*
1700                  * Wipe out any old MD RAID (or other) metadata at the end
1701                  * of the device.  This will also verify that the device is
1702                  * as large as we think.  Be careful with very small devices.
1703                  */
1704                 start = (blocks & ~(rsv - 1));
1705                 if (start > rsv)
1706                         start -= rsv;
1707                 if (start > 0)
1708                         retval = zero_blocks(fs, start, blocks - start,
1709                                              NULL, &ret_blk, NULL);
1710
1711                 if (retval) {
1712                         com_err(program_name, retval,
1713                                 _("while zeroing block %u at end of filesystem"),
1714                                 ret_blk);
1715                 }
1716                 setup_lazy_bg(fs);
1717                 write_inode_tables(fs);
1718                 create_root_dir(fs);
1719                 create_lost_and_found(fs);
1720                 reserve_inodes(fs);
1721                 create_bad_block_inode(fs, bb_list);
1722                 if (fs->super->s_feature_compat &
1723                     EXT2_FEATURE_COMPAT_RESIZE_INODE) {
1724                         retval = ext2fs_create_resize_inode(fs);
1725                         if (retval) {
1726                                 com_err("ext2fs_create_resize_inode", retval,
1727                                 _("while reserving blocks for online resize"));
1728                                 exit(1);
1729                         }
1730                 }
1731         }
1732
1733         if (journal_device) {
1734                 ext2_filsys     jfs;
1735
1736                 if (!force)
1737                         check_plausibility(journal_device);
1738                 check_mount(journal_device, force, _("journal"));
1739
1740                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1741                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1742                                      fs->blocksize, unix_io_manager, &jfs);
1743                 if (retval) {
1744                         com_err(program_name, retval,
1745                                 _("while trying to open journal device %s\n"),
1746                                 journal_device);
1747                         exit(1);
1748                 }
1749                 if (!quiet) {
1750                         printf(_("Adding journal to device %s: "),
1751                                journal_device);
1752                         fflush(stdout);
1753                 }
1754                 retval = ext2fs_add_journal_device(fs, jfs);
1755                 if(retval) {
1756                         com_err (program_name, retval,
1757                                  _("\n\twhile trying to add journal to device %s"),
1758                                  journal_device);
1759                         exit(1);
1760                 }
1761                 if (!quiet)
1762                         printf(_("done\n"));
1763                 ext2fs_close(jfs);
1764                 free(journal_device);
1765         } else if ((journal_size) ||
1766                    (fs_param.s_feature_compat &
1767                     EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1768                 journal_blocks = figure_journal_size(journal_size, fs);
1769
1770                 if (!journal_blocks) {
1771                         fs->super->s_feature_compat &=
1772                                 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1773                         goto no_journal;
1774                 }
1775                 if (!quiet) {
1776                         printf(_("Creating journal (%d blocks): "),
1777                                journal_blocks);
1778                         fflush(stdout);
1779                 }
1780                 retval = ext2fs_add_journal_inode(fs, journal_blocks,
1781                                                   journal_flags);
1782                 if (retval) {
1783                         com_err (program_name, retval,
1784                                  _("\n\twhile trying to create journal"));
1785                         exit(1);
1786                 }
1787                 if (!quiet)
1788                         printf(_("done\n"));
1789         }
1790 no_journal:
1791
1792         if (!quiet)
1793                 printf(_("Writing superblocks and "
1794                        "filesystem accounting information: "));
1795         retval = ext2fs_flush(fs);
1796         if (retval) {
1797                 fprintf(stderr,
1798                         _("\nWarning, had trouble writing out superblocks."));
1799         }
1800         if (!quiet) {
1801                 printf(_("done\n\n"));
1802                 if (!getenv("MKE2FS_SKIP_CHECK_MSG"))
1803                         print_check_message(fs);
1804         }
1805         val = ext2fs_close(fs);
1806         remove_error_table(&et_ext2_error_table);
1807         remove_error_table(&et_prof_error_table);
1808         return (retval || val) ? 1 : 0;
1809 }