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 #define _XOPEN_SOURCE 600 /* for inclusion of PATH_MAX in Solaris */
  20
  21 #include <stdio.h>
  22 #include <string.h>
  23 #include <strings.h>
  24 #include <fcntl.h>
  25 #include <ctype.h>
  26 #include <time.h>
  27 #ifdef __linux__
  28 #include <sys/utsname.h>
  29 #endif
  30 #ifdef HAVE_GETOPT_H
  31 #include <getopt.h>
  32 #else
  33 extern char *optarg;
  34 extern int optind;
  35 #endif
  36 #ifdef HAVE_UNISTD_H
  37 #include <unistd.h>
  38 #endif
  39 #ifdef HAVE_STDLIB_H
  40 #include <stdlib.h>
  41 #endif
  42 #ifdef HAVE_ERRNO_H
  43 #include <errno.h>
  44 #endif
  45 #include <sys/ioctl.h>
  46 #include <sys/types.h>
  47 #include <sys/stat.h>
  48 #include <libgen.h>
  49 #include <limits.h>
  50 #include <blkid/blkid.h>
  51
  52 #include "ext2fs/ext2_fs.h"
  53 #include "ext2fs/ext2fsP.h"
  54 #include "et/com_err.h"
  55 #include "uuid/uuid.h"
  56 #include "e2p/e2p.h"
  57 #include "ext2fs/ext2fs.h"
  58 #include "util.h"
  59 #include "profile.h"
  60 #include "prof_err.h"
  61 #include "../version.h"
  62 #include "nls-enable.h"
  63 #include "quota/mkquota.h"
  64
  65 #define STRIDE_LENGTH 8
  66
  67 #define MAX_32_NUM ((((unsigned long long) 1) << 32) - 1)
  68
  69 #ifndef __sparc__
  70 #define ZAP_BOOTBLOCK
  71 #endif
  72
  73 #ifndef ROOT_SYSCONFDIR
  74 #define ROOT_SYSCONFDIR "/etc"
  75 #endif
  76
  77 #define DISCARD_STEP_MB         (2048)
  78
  79 extern int isatty(int);
  80 extern FILE *fpopen(const char *cmd, const char *mode);
  81
  82 static const char * program_name = "mke2fs";
  83 static const char * device_name /* = NULL */;
  84
  85 /* Command line options */
  86 static int      cflag;
  87 static int      verbose;
  88 static int      quiet;
  89 static int      super_only;
  90 static int      discard = 1;    /* attempt to discard device before fs creation */
  91 static int      direct_io;
  92 static int      force;
  93 static int      noaction;
  94 static uid_t    root_uid;
  95 static gid_t    root_gid;
  96 int     journal_size;
  97 int     journal_flags;
  98 static int      lazy_itable_init;
  99 static char     *bad_blocks_filename = NULL;
 100 static __u32    fs_stride;
 101 static int      quotatype = -1;  /* Initialize both user and group quotas by default */
 102
 103 static struct ext2_super_block fs_param;
 104 static char *fs_uuid = NULL;
 105 static char *creator_os;
 106 static char *volume_label;
 107 static char *mount_dir;
 108 char *journal_device;
 109 static int sync_kludge; /* Set using the MKE2FS_SYNC env. option */
 110 static char **fs_types;
 111
 112 static profile_t        profile;
 113
 114 static int sys_page_size = 4096;
 115 static int linux_version_code = 0;
 116
 117 static void usage(void)
 118 {
 119         fprintf(stderr, _("Usage: %s [-c|-l filename] [-b block-size] "
 120         "[-C cluster-size]\n\t[-i bytes-per-inode] [-I inode-size] "
 121         "[-J journal-options]\n"
 122         "\t[-G flex-group-size] [-N number-of-inodes]\n"
 123         "\t[-m reserved-blocks-percentage] [-o creator-os]\n"
 124         "\t[-g blocks-per-group] [-L volume-label] "
 125         "[-M last-mounted-directory]\n\t[-O feature[,...]] "
 126         "[-r fs-revision] [-E extended-option[,...]]\n"
 127         "\t[-t fs-type] [-T usage-type ] [-U UUID] "
 128         "[-jnqvDFKSV] device [blocks-count]\n"),
 129                 program_name);
 130         exit(1);
 131 }
 132
 133 static int int_log2(unsigned long long arg)
 134 {
 135         int     l = 0;
 136
 137         arg >>= 1;
 138         while (arg) {
 139                 l++;
 140                 arg >>= 1;
 141         }
 142         return l;
 143 }
 144
 145 static int int_log10(unsigned long long arg)
 146 {
 147         int     l;
 148
 149         for (l=0; arg ; l++)
 150                 arg = arg / 10;
 151         return l;
 152 }
 153
 154 #ifdef __linux__
 155 static int parse_version_number(const char *s)
 156 {
 157         int     major, minor, rev;
 158         char    *endptr;
 159         const char *cp = s;
 160
 161         if (!s)
 162                 return 0;
 163         major = strtol(cp, &endptr, 10);
 164         if (cp == endptr || *endptr != '.')
 165                 return 0;
 166         cp = endptr + 1;
 167         minor = strtol(cp, &endptr, 10);
 168         if (cp == endptr || *endptr != '.')
 169                 return 0;
 170         cp = endptr + 1;
 171         rev = strtol(cp, &endptr, 10);
 172         if (cp == endptr)
 173                 return 0;
 174         return ((((major * 256) + minor) * 256) + rev);
 175 }
 176 #endif
 177
 178 /*
 179  * Helper function for read_bb_file and test_disk
 180  */
 181 static void invalid_block(ext2_filsys fs EXT2FS_ATTR((unused)), blk_t blk)
 182 {
 183         fprintf(stderr, _("Bad block %u out of range; ignored.\n"), blk);
 184         return;
 185 }
 186
 187 /*
 188  * Reads the bad blocks list from a file
 189  */
 190 static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list,
 191                          const char *bad_blocks_file)
 192 {
 193         FILE            *f;
 194         errcode_t       retval;
 195
 196         f = fopen(bad_blocks_file, "r");
 197         if (!f) {
 198                 com_err("read_bad_blocks_file", errno,
 199                         _("while trying to open %s"), bad_blocks_file);
 200                 exit(1);
 201         }
 202         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 203         fclose (f);
 204         if (retval) {
 205                 com_err("ext2fs_read_bb_FILE", retval, "%s",
 206                         _("while reading in list of bad blocks from file"));
 207                 exit(1);
 208         }
 209 }
 210
 211 /*
 212  * Runs the badblocks program to test the disk
 213  */
 214 static void test_disk(ext2_filsys fs, badblocks_list *bb_list)
 215 {
 216         FILE            *f;
 217         errcode_t       retval;
 218         char            buf[1024];
 219
 220         sprintf(buf, "badblocks -b %d -X %s%s%s %llu", fs->blocksize,
 221                 quiet ? "" : "-s ", (cflag > 1) ? "-w " : "",
 222                 fs->device_name, ext2fs_blocks_count(fs->super)-1);
 223         if (verbose)
 224                 printf(_("Running command: %s\n"), buf);
 225         f = popen(buf, "r");
 226         if (!f) {
 227                 com_err("popen", errno,
 228                         _("while trying to run '%s'"), buf);
 229                 exit(1);
 230         }
 231         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 232         pclose(f);
 233         if (retval) {
 234                 com_err("ext2fs_read_bb_FILE", retval, "%s",
 235                         _("while processing list of bad blocks from program"));
 236                 exit(1);
 237         }
 238 }
 239
 240 static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list)
 241 {
 242         dgrp_t                  i;
 243         blk_t                   j;
 244         unsigned                must_be_good;
 245         blk_t                   blk;
 246         badblocks_iterate       bb_iter;
 247         errcode_t               retval;
 248         blk_t                   group_block;
 249         int                     group;
 250         int                     group_bad;
 251
 252         if (!bb_list)
 253                 return;
 254
 255         /*
 256          * The primary superblock and group descriptors *must* be
 257          * good; if not, abort.
 258          */
 259         must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks;
 260         for (i = fs->super->s_first_data_block; i <= must_be_good; i++) {
 261                 if (ext2fs_badblocks_list_test(bb_list, i)) {
 262                         fprintf(stderr, _("Block %d in primary "
 263                                 "superblock/group descriptor area bad.\n"), i);
 264                         fprintf(stderr, _("Blocks %u through %u must be good "
 265                                 "in order to build a filesystem.\n"),
 266                                 fs->super->s_first_data_block, must_be_good);
 267                         fputs(_("Aborting....\n"), stderr);
 268                         exit(1);
 269                 }
 270         }
 271
 272         /*
 273          * See if any of the bad blocks are showing up in the backup
 274          * superblocks and/or group descriptors.  If so, issue a
 275          * warning and adjust the block counts appropriately.
 276          */
 277         group_block = fs->super->s_first_data_block +
 278                 fs->super->s_blocks_per_group;
 279
 280         for (i = 1; i < fs->group_desc_count; i++) {
 281                 group_bad = 0;
 282                 for (j=0; j < fs->desc_blocks+1; j++) {
 283                         if (ext2fs_badblocks_list_test(bb_list,
 284                                                        group_block + j)) {
 285                                 if (!group_bad)
 286                                         fprintf(stderr,
 287 _("Warning: the backup superblock/group descriptors at block %u contain\n"
 288 "       bad blocks.\n\n"),
 289                                                 group_block);
 290                                 group_bad++;
 291                                 group = ext2fs_group_of_blk2(fs, group_block+j);
 292                                 ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
 293                                 ext2fs_group_desc_csum_set(fs, group);
 294                                 ext2fs_free_blocks_count_add(fs->super, 1);
 295                         }
 296                 }
 297                 group_block += fs->super->s_blocks_per_group;
 298         }
 299
 300         /*
 301          * Mark all the bad blocks as used...
 302          */
 303         retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
 304         if (retval) {
 305                 com_err("ext2fs_badblocks_list_iterate_begin", retval, "%s",
 306                         _("while marking bad blocks as used"));
 307                 exit(1);
 308         }
 309         while (ext2fs_badblocks_list_iterate(bb_iter, &blk))
 310                 ext2fs_mark_block_bitmap2(fs->block_map, EXT2FS_B2C(fs, blk));
 311         ext2fs_badblocks_list_iterate_end(bb_iter);
 312 }
 313
 314 static void write_inode_tables(ext2_filsys fs, int lazy_flag, int itable_zeroed)
 315 {
 316         errcode_t       retval;
 317         blk64_t         blk;
 318         dgrp_t          i;
 319         int             num;
 320         struct ext2fs_numeric_progress_struct progress;
 321
 322         ext2fs_numeric_progress_init(fs, &progress,
 323                                      _("Writing inode tables: "),
 324                                      fs->group_desc_count);
 325
 326         for (i = 0; i < fs->group_desc_count; i++) {
 327                 ext2fs_numeric_progress_update(fs, &progress, i);
 328
 329                 blk = ext2fs_inode_table_loc(fs, i);
 330                 num = fs->inode_blocks_per_group;
 331
 332                 if (lazy_flag)
 333                         num = ext2fs_div_ceil((fs->super->s_inodes_per_group -
 334                                                ext2fs_bg_itable_unused(fs, i)) *
 335                                               EXT2_INODE_SIZE(fs->super),
 336                                               EXT2_BLOCK_SIZE(fs->super));
 337                 if (!lazy_flag || itable_zeroed) {
 338                         /* The kernel doesn't need to zero the itable blocks */
 339                         ext2fs_bg_flags_set(fs, i, EXT2_BG_INODE_ZEROED);
 340                         ext2fs_group_desc_csum_set(fs, i);
 341                 }
 342                 retval = ext2fs_zero_blocks2(fs, blk, num, &blk, &num);
 343                 if (retval) {
 344                         fprintf(stderr, _("\nCould not write %d "
 345                                   "blocks in inode table starting at %llu: %s\n"),
 346                                 num, blk, error_message(retval));
 347                         exit(1);
 348                 }
 349                 if (sync_kludge) {
 350                         if (sync_kludge == 1)
 351                                 sync();
 352                         else if ((i % sync_kludge) == 0)
 353                                 sync();
 354                 }
 355         }
 356         ext2fs_zero_blocks2(0, 0, 0, 0, 0);
 357         ext2fs_numeric_progress_close(fs, &progress,
 358                                       _("done                            \n"));
 359 }
 360
 361 static void create_root_dir(ext2_filsys fs)
 362 {
 363         errcode_t               retval;
 364         struct ext2_inode       inode;
 365
 366         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0);
 367         if (retval) {
 368                 com_err("ext2fs_mkdir", retval, "%s",
 369                         _("while creating root dir"));
 370                 exit(1);
 371         }
 372         if (root_uid != 0 || root_gid != 0) {
 373                 retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode);
 374                 if (retval) {
 375                         com_err("ext2fs_read_inode", retval, "%s",
 376                                 _("while reading root inode"));
 377                         exit(1);
 378                 }
 379
 380                 inode.i_uid = root_uid;
 381                 ext2fs_set_i_uid_high(inode, root_uid >> 16);
 382                 inode.i_gid = root_gid;
 383                 ext2fs_set_i_gid_high(inode, root_gid >> 16);
 384
 385                 retval = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode);
 386                 if (retval) {
 387                         com_err("ext2fs_write_inode", retval, "%s",
 388                                 _("while setting root inode ownership"));
 389                         exit(1);
 390                 }
 391         }
 392 }
 393
 394 static void create_lost_and_found(ext2_filsys fs)
 395 {
 396         unsigned int            lpf_size = 0;
 397         errcode_t               retval;
 398         ext2_ino_t              ino;
 399         const char              *name = "lost+found";
 400         int                     i;
 401
 402         fs->umask = 077;
 403         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name);
 404         if (retval) {
 405                 com_err("ext2fs_mkdir", retval, "%s",
 406                         _("while creating /lost+found"));
 407                 exit(1);
 408         }
 409
 410         retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
 411         if (retval) {
 412                 com_err("ext2_lookup", retval, "%s",
 413                         _("while looking up /lost+found"));
 414                 exit(1);
 415         }
 416
 417         for (i=1; i < EXT2_NDIR_BLOCKS; i++) {
 418                 /* Ensure that lost+found is at least 2 blocks, so we always
 419                  * test large empty blocks for big-block filesystems.  */
 420                 if ((lpf_size += fs->blocksize) >= 16*1024 &&
 421                     lpf_size >= 2 * fs->blocksize)
 422                         break;
 423                 retval = ext2fs_expand_dir(fs, ino);
 424                 if (retval) {
 425                         com_err("ext2fs_expand_dir", retval, "%s",
 426                                 _("while expanding /lost+found"));
 427                         exit(1);
 428                 }
 429         }
 430 }
 431
 432 static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list)
 433 {
 434         errcode_t       retval;
 435
 436         ext2fs_mark_inode_bitmap2(fs->inode_map, EXT2_BAD_INO);
 437         ext2fs_inode_alloc_stats2(fs, EXT2_BAD_INO, +1, 0);
 438         retval = ext2fs_update_bb_inode(fs, bb_list);
 439         if (retval) {
 440                 com_err("ext2fs_update_bb_inode", retval, "%s",
 441                         _("while setting bad block inode"));
 442                 exit(1);
 443         }
 444
 445 }
 446
 447 static void reserve_inodes(ext2_filsys fs)
 448 {
 449         ext2_ino_t      i;
 450
 451         for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++)
 452                 ext2fs_inode_alloc_stats2(fs, i, +1, 0);
 453         ext2fs_mark_ib_dirty(fs);
 454 }
 455
 456 #define BSD_DISKMAGIC   (0x82564557UL)  /* The disk magic number */
 457 #define BSD_MAGICDISK   (0x57455682UL)  /* The disk magic number reversed */
 458 #define BSD_LABEL_OFFSET        64
 459
 460 static void zap_sector(ext2_filsys fs, int sect, int nsect)
 461 {
 462         char *buf;
 463         int retval;
 464         unsigned int *magic;
 465
 466         buf = malloc(512*nsect);
 467         if (!buf) {
 468                 printf(_("Out of memory erasing sectors %d-%d\n"),
 469                        sect, sect + nsect - 1);
 470                 exit(1);
 471         }
 472
 473         if (sect == 0) {
 474                 /* Check for a BSD disklabel, and don't erase it if so */
 475                 retval = io_channel_read_blk64(fs->io, 0, -512, buf);
 476                 if (retval)
 477                         fprintf(stderr,
 478                                 _("Warning: could not read block 0: %s\n"),
 479                                 error_message(retval));
 480                 else {
 481                         magic = (unsigned int *) (buf + BSD_LABEL_OFFSET);
 482                         if ((*magic == BSD_DISKMAGIC) ||
 483                             (*magic == BSD_MAGICDISK))
 484                                 return;
 485                 }
 486         }
 487
 488         memset(buf, 0, 512*nsect);
 489         io_channel_set_blksize(fs->io, 512);
 490         retval = io_channel_write_blk64(fs->io, sect, -512*nsect, buf);
 491         io_channel_set_blksize(fs->io, fs->blocksize);
 492         free(buf);
 493         if (retval)
 494                 fprintf(stderr, _("Warning: could not erase sector %d: %s\n"),
 495                         sect, error_message(retval));
 496 }
 497
 498 static void create_journal_dev(ext2_filsys fs)
 499 {
 500         struct ext2fs_numeric_progress_struct progress;
 501         errcode_t               retval;
 502         char                    *buf;
 503         blk64_t                 blk, err_blk;
 504         int                     c, count, err_count;
 505
 506         retval = ext2fs_create_journal_superblock(fs,
 507                                   ext2fs_blocks_count(fs->super), 0, &buf);
 508         if (retval) {
 509                 com_err("create_journal_dev", retval, "%s",
 510                         _("while initializing journal superblock"));
 511                 exit(1);
 512         }
 513
 514         if (journal_flags & EXT2_MKJOURNAL_LAZYINIT)
 515                 goto write_superblock;
 516
 517         ext2fs_numeric_progress_init(fs, &progress,
 518                                      _("Zeroing journal device: "),
 519                                      ext2fs_blocks_count(fs->super));
 520         blk = 0;
 521         count = ext2fs_blocks_count(fs->super);
 522         while (count > 0) {
 523                 if (count > 1024)
 524                         c = 1024;
 525                 else
 526                         c = count;
 527                 retval = ext2fs_zero_blocks2(fs, blk, c, &err_blk, &err_count);
 528                 if (retval) {
 529                         com_err("create_journal_dev", retval,
 530                                 _("while zeroing journal device "
 531                                   "(block %llu, count %d)"),
 532                                 err_blk, err_count);
 533                         exit(1);
 534                 }
 535                 blk += c;
 536                 count -= c;
 537                 ext2fs_numeric_progress_update(fs, &progress, blk);
 538         }
 539         ext2fs_zero_blocks2(0, 0, 0, 0, 0);
 540
 541         ext2fs_numeric_progress_close(fs, &progress, NULL);
 542 write_superblock:
 543         retval = io_channel_write_blk64(fs->io,
 544                                         fs->super->s_first_data_block+1,
 545                                         1, buf);
 546         if (retval) {
 547                 com_err("create_journal_dev", retval, "%s",
 548                         _("while writing journal superblock"));
 549                 exit(1);
 550         }
 551 }
 552
 553 static void show_stats(ext2_filsys fs)
 554 {
 555         struct ext2_super_block *s = fs->super;
 556         char                    buf[80];
 557         char                    *os;
 558         blk64_t                 group_block;
 559         dgrp_t                  i;
 560         int                     need, col_left;
 561
 562         if (ext2fs_blocks_count(&fs_param) != ext2fs_blocks_count(s))
 563                 fprintf(stderr, _("warning: %llu blocks unused.\n\n"),
 564                        ext2fs_blocks_count(&fs_param) - ext2fs_blocks_count(s));
 565
 566         memset(buf, 0, sizeof(buf));
 567         strncpy(buf, s->s_volume_name, sizeof(s->s_volume_name));
 568         printf(_("Filesystem label=%s\n"), buf);
 569         os = e2p_os2string(fs->super->s_creator_os);
 570         if (os)
 571                 printf(_("OS type: %s\n"), os);
 572         free(os);
 573         printf(_("Block size=%u (log=%u)\n"), fs->blocksize,
 574                 s->s_log_block_size);
 575         if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
 576                                        EXT4_FEATURE_RO_COMPAT_BIGALLOC))
 577                 printf(_("Cluster size=%u (log=%u)\n"),
 578                        fs->blocksize << fs->cluster_ratio_bits,
 579                        s->s_log_cluster_size);
 580         else
 581                 printf(_("Fragment size=%u (log=%u)\n"), EXT2_CLUSTER_SIZE(s),
 582                        s->s_log_cluster_size);
 583         printf(_("Stride=%u blocks, Stripe width=%u blocks\n"),
 584                s->s_raid_stride, s->s_raid_stripe_width);
 585         printf(_("%u inodes, %llu blocks\n"), s->s_inodes_count,
 586                ext2fs_blocks_count(s));
 587         printf(_("%llu blocks (%2.2f%%) reserved for the super user\n"),
 588                 ext2fs_r_blocks_count(s),
 589                100.0 *  ext2fs_r_blocks_count(s) / ext2fs_blocks_count(s));
 590         printf(_("First data block=%u\n"), s->s_first_data_block);
 591         if (root_uid != 0 || root_gid != 0)
 592                 printf(_("Root directory owner=%u:%u\n"), root_uid, root_gid);
 593         if (s->s_reserved_gdt_blocks)
 594                 printf(_("Maximum filesystem blocks=%lu\n"),
 595                        (s->s_reserved_gdt_blocks + fs->desc_blocks) *
 596                        EXT2_DESC_PER_BLOCK(s) * s->s_blocks_per_group);
 597         if (fs->group_desc_count > 1)
 598                 printf(_("%u block groups\n"), fs->group_desc_count);
 599         else
 600                 printf(_("%u block group\n"), fs->group_desc_count);
 601         if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
 602                                        EXT4_FEATURE_RO_COMPAT_BIGALLOC))
 603                 printf(_("%u blocks per group, %u clusters per group\n"),
 604                        s->s_blocks_per_group, s->s_clusters_per_group);
 605         else
 606                 printf(_("%u blocks per group, %u fragments per group\n"),
 607                        s->s_blocks_per_group, s->s_clusters_per_group);
 608         printf(_("%u inodes per group\n"), s->s_inodes_per_group);
 609
 610         if (fs->group_desc_count == 1) {
 611                 printf("\n");
 612                 return;
 613         }
 614
 615         printf("%s", _("Superblock backups stored on blocks: "));
 616         group_block = s->s_first_data_block;
 617         col_left = 0;
 618         for (i = 1; i < fs->group_desc_count; i++) {
 619                 group_block += s->s_blocks_per_group;
 620                 if (!ext2fs_bg_has_super(fs, i))
 621                         continue;
 622                 if (i != 1)
 623                         printf(", ");
 624                 need = int_log10(group_block) + 2;
 625                 if (need > col_left) {
 626                         printf("\n\t");
 627                         col_left = 72;
 628                 }
 629                 col_left -= need;
 630                 printf("%llu", group_block);
 631         }
 632         printf("\n\n");
 633 }
 634
 635 /*
 636  * Set the S_CREATOR_OS field.  Return true if OS is known,
 637  * otherwise, 0.
 638  */
 639 static int set_os(struct ext2_super_block *sb, char *os)
 640 {
 641         if (isdigit (*os))
 642                 sb->s_creator_os = atoi (os);
 643         else if (strcasecmp(os, "linux") == 0)
 644                 sb->s_creator_os = EXT2_OS_LINUX;
 645         else if (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0)
 646                 sb->s_creator_os = EXT2_OS_HURD;
 647         else if (strcasecmp(os, "freebsd") == 0)
 648                 sb->s_creator_os = EXT2_OS_FREEBSD;
 649         else if (strcasecmp(os, "lites") == 0)
 650                 sb->s_creator_os = EXT2_OS_LITES;
 651         else
 652                 return 0;
 653         return 1;
 654 }
 655
 656 #define PATH_SET "PATH=/sbin"
 657
 658 static void parse_extended_opts(struct ext2_super_block *param,
 659                                 const char *opts)
 660 {
 661         char    *buf, *token, *next, *p, *arg, *badopt = 0;
 662         int     len;
 663         int     r_usage = 0;
 664
 665         len = strlen(opts);
 666         buf = malloc(len+1);
 667         if (!buf) {
 668                 fprintf(stderr, "%s",
 669                         _("Couldn't allocate memory to parse options!\n"));
 670                 exit(1);
 671         }
 672         strcpy(buf, opts);
 673         for (token = buf; token && *token; token = next) {
 674                 p = strchr(token, ',');
 675                 next = 0;
 676                 if (p) {
 677                         *p = 0;
 678                         next = p+1;
 679                 }
 680                 arg = strchr(token, '=');
 681                 if (arg) {
 682                         *arg = 0;
 683                         arg++;
 684                 }
 685                 if (strcmp(token, "desc-size") == 0 ||
 686                     strcmp(token, "desc_size") == 0) {
 687                         int desc_size;
 688
 689                         if (!(fs_param.s_feature_incompat &
 690                               EXT4_FEATURE_INCOMPAT_64BIT)) {
 691                                 fprintf(stderr,
 692                                         _("%s requires '-O 64bit'\n"), token);
 693                                 r_usage++;
 694                                 continue;
 695                         }
 696                         if (param->s_reserved_gdt_blocks != 0) {
 697                                 fprintf(stderr,
 698                                         _("'%s' must be before 'resize=%u'\n"),
 699                                         token, param->s_reserved_gdt_blocks);
 700                                 r_usage++;
 701                                 continue;
 702                         }
 703                         if (!arg) {
 704                                 r_usage++;
 705                                 badopt = token;
 706                                 continue;
 707                         }
 708                         desc_size = strtoul(arg, &p, 0);
 709                         if (*p || (desc_size & (desc_size - 1))) {
 710                                 fprintf(stderr,
 711                                         _("Invalid desc_size: '%s'\n"), arg);
 712                                 r_usage++;
 713                                 continue;
 714                         }
 715                         param->s_desc_size = desc_size;
 716                 } else if (strcmp(token, "mmp_update_interval") == 0) {
 717                         if (!arg) {
 718                                 r_usage++;
 719                                 badopt = token;
 720                                 continue;
 721                         }
 722                         param->s_mmp_update_interval = strtoul(arg, &p, 0);
 723                         if (*p) {
 724                                 fprintf(stderr,
 725                                         _("Invalid mmp_update_interval: %s\n"),
 726                                         arg);
 727                                 r_usage++;
 728                                 continue;
 729                         }
 730                 } else if (strcmp(token, "stride") == 0) {
 731                         if (!arg) {
 732                                 r_usage++;
 733                                 badopt = token;
 734                                 continue;
 735                         }
 736                         param->s_raid_stride = strtoul(arg, &p, 0);
 737                         if (*p) {
 738                                 fprintf(stderr,
 739                                         _("Invalid stride parameter: %s\n"),
 740                                         arg);
 741                                 r_usage++;
 742                                 continue;
 743                         }
 744                 } else if (strcmp(token, "stripe-width") == 0 ||
 745                            strcmp(token, "stripe_width") == 0) {
 746                         if (!arg) {
 747                                 r_usage++;
 748                                 badopt = token;
 749                                 continue;
 750                         }
 751                         param->s_raid_stripe_width = strtoul(arg, &p, 0);
 752                         if (*p) {
 753                                 fprintf(stderr,
 754                                         _("Invalid stripe-width parameter: %s\n"),
 755                                         arg);
 756                                 r_usage++;
 757                                 continue;
 758                         }
 759                 } else if (!strcmp(token, "resize")) {
 760                         blk64_t resize;
 761                         unsigned long bpg, rsv_groups;
 762                         unsigned long group_desc_count, desc_blocks;
 763                         unsigned int gdpb, blocksize;
 764                         int rsv_gdb;
 765
 766                         if (!arg) {
 767                                 r_usage++;
 768                                 badopt = token;
 769                                 continue;
 770                         }
 771
 772                         resize = parse_num_blocks2(arg,
 773                                                    param->s_log_block_size);
 774
 775                         if (resize == 0) {
 776                                 fprintf(stderr,
 777                                         _("Invalid resize parameter: %s\n"),
 778                                         arg);
 779                                 r_usage++;
 780                                 continue;
 781                         }
 782                         if (resize <= ext2fs_blocks_count(param)) {
 783                                 fprintf(stderr, "%s",
 784                                         _("The resize maximum must be greater "
 785                                           "than the filesystem size.\n"));
 786                                 r_usage++;
 787                                 continue;
 788                         }
 789
 790                         blocksize = EXT2_BLOCK_SIZE(param);
 791                         bpg = param->s_blocks_per_group;
 792                         if (!bpg)
 793                                 bpg = blocksize * 8;
 794                         gdpb = EXT2_DESC_PER_BLOCK(param);
 795                         group_desc_count = (__u32) ext2fs_div64_ceil(
 796                                 ext2fs_blocks_count(param), bpg);
 797                         desc_blocks = (group_desc_count +
 798                                        gdpb - 1) / gdpb;
 799                         rsv_groups = ext2fs_div64_ceil(resize, bpg);
 800                         rsv_gdb = ext2fs_div_ceil(rsv_groups, gdpb) -
 801                                 desc_blocks;
 802                         if (rsv_gdb > (int) EXT2_ADDR_PER_BLOCK(param))
 803                                 rsv_gdb = EXT2_ADDR_PER_BLOCK(param);
 804
 805                         if (rsv_gdb > 0) {
 806                                 if (param->s_rev_level == EXT2_GOOD_OLD_REV) {
 807                                         fprintf(stderr, "%s",
 808         _("On-line resizing not supported with revision 0 filesystems\n"));
 809                                         free(buf);
 810                                         exit(1);
 811                                 }
 812                                 param->s_feature_compat |=
 813                                         EXT2_FEATURE_COMPAT_RESIZE_INODE;
 814
 815                                 param->s_reserved_gdt_blocks = rsv_gdb;
 816                         }
 817                 } else if (!strcmp(token, "test_fs")) {
 818                         param->s_flags |= EXT2_FLAGS_TEST_FILESYS;
 819                 } else if (!strcmp(token, "lazy_itable_init")) {
 820                         if (arg)
 821                                 lazy_itable_init = strtoul(arg, &p, 0);
 822                         else
 823                                 lazy_itable_init = 1;
 824                 } else if (!strcmp(token, "lazy_journal_init")) {
 825                         if (arg)
 826                                 journal_flags |= strtoul(arg, &p, 0) ?
 827                                                 EXT2_MKJOURNAL_LAZYINIT : 0;
 828                         else
 829                                 journal_flags |= EXT2_MKJOURNAL_LAZYINIT;
 830                 } else if (!strcmp(token, "root_owner")) {
 831                         if (arg) {
 832                                 root_uid = strtoul(arg, &p, 0);
 833                                 if (*p != ':') {
 834                                         fprintf(stderr,
 835                                                 _("Invalid root_owner: '%s'\n"),
 836                                                 arg);
 837                                         r_usage++;
 838                                         continue;
 839                                 }
 840                                 p++;
 841                                 root_gid = strtoul(p, &p, 0);
 842                                 if (*p) {
 843                                         fprintf(stderr,
 844                                                 _("Invalid root_owner: '%s'\n"),
 845                                                 arg);
 846                                         r_usage++;
 847                                         continue;
 848                                 }
 849                         } else {
 850                                 root_uid = getuid();
 851                                 root_gid = getgid();
 852                         }
 853                 } else if (!strcmp(token, "discard")) {
 854                         discard = 1;
 855                 } else if (!strcmp(token, "nodiscard")) {
 856                         discard = 0;
 857                 } else if (!strcmp(token, "quotatype")) {
 858                         if (!arg) {
 859                                 r_usage++;
 860                                 badopt = token;
 861                                 continue;
 862                         }
 863                         if (!strncmp(arg, "usr", 3)) {
 864                                 quotatype = 0;
 865                         } else if (!strncmp(arg, "grp", 3)) {
 866                                 quotatype = 1;
 867                         } else {
 868                                 fprintf(stderr,
 869                                         _("Invalid quotatype parameter: %s\n"),
 870                                         arg);
 871                                 r_usage++;
 872                                 continue;
 873                         }
 874                 } else {
 875                         r_usage++;
 876                         badopt = token;
 877                 }
 878         }
 879         if (r_usage) {
 880                 fprintf(stderr, _("\nBad option(s) specified: %s\n\n"
 881                         "Extended options are separated by commas, "
 882                         "and may take an argument which\n"
 883                         "\tis set off by an equals ('=') sign.\n\n"
 884                         "Valid extended options are:\n"
 885                         "\tstride=<RAID per-disk data chunk in blocks>\n"
 886                         "\tstripe-width=<RAID stride * data disks in blocks>\n"
 887                         "\tresize=<resize maximum size in blocks>\n"
 888                         "\tlazy_itable_init=<0 to disable, 1 to enable>\n"
 889                         "\tlazy_journal_init=<0 to disable, 1 to enable>\n"
 890                         "\troot_uid=<uid of root directory>\n"
 891                         "\troot_gid=<gid of root directory>\n"
 892                         "\ttest_fs\n"
 893                         "\tdiscard\n"
 894                         "\tnodiscard\n"
 895                         "\tquotatype=<usr OR grp>\n\n"),
 896                         badopt ? badopt : "");
 897                 free(buf);
 898                 exit(1);
 899         }
 900         if (param->s_raid_stride &&
 901             (param->s_raid_stripe_width % param->s_raid_stride) != 0)
 902                 fprintf(stderr, _("\nWarning: RAID stripe-width %u not an even "
 903                                   "multiple of stride %u.\n\n"),
 904                         param->s_raid_stripe_width, param->s_raid_stride);
 905
 906         free(buf);
 907 }
 908
 909 static __u32 ok_features[3] = {
 910         /* Compat */
 911         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 912                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 913                 EXT2_FEATURE_COMPAT_DIR_INDEX |
 914                 EXT2_FEATURE_COMPAT_EXT_ATTR,
 915         /* Incompat */
 916         EXT2_FEATURE_INCOMPAT_FILETYPE|
 917                 EXT3_FEATURE_INCOMPAT_EXTENTS|
 918                 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|
 919                 EXT2_FEATURE_INCOMPAT_META_BG|
 920                 EXT4_FEATURE_INCOMPAT_FLEX_BG|
 921                 EXT4_FEATURE_INCOMPAT_MMP |
 922                 EXT4_FEATURE_INCOMPAT_64BIT,
 923         /* R/O compat */
 924         EXT2_FEATURE_RO_COMPAT_LARGE_FILE|
 925                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 926                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 927                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 928                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|
 929                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|
 930                 EXT4_FEATURE_RO_COMPAT_BIGALLOC|
 931 #ifdef CONFIG_QUOTA
 932                 EXT4_FEATURE_RO_COMPAT_QUOTA|
 933 #endif
 934                 0
 935 };
 936
 937
 938 static void syntax_err_report(const char *filename, long err, int line_num)
 939 {
 940         fprintf(stderr,
 941                 _("Syntax error in mke2fs config file (%s, line #%d)\n\t%s\n"),
 942                 filename, line_num, error_message(err));
 943         exit(1);
 944 }
 945
 946 static const char *config_fn[] = { ROOT_SYSCONFDIR "/mke2fs.conf", 0 };
 947
 948 static void edit_feature(const char *str, __u32 *compat_array)
 949 {
 950         if (!str)
 951                 return;
 952
 953         if (e2p_edit_feature(str, compat_array, ok_features)) {
 954                 fprintf(stderr, _("Invalid filesystem option set: %s\n"),
 955                         str);
 956                 exit(1);
 957         }
 958 }
 959
 960 static void edit_mntopts(const char *str, __u32 *mntopts)
 961 {
 962         if (!str)
 963                 return;
 964
 965         if (e2p_edit_mntopts(str, mntopts, ~0)) {
 966                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 967                         str);
 968                 exit(1);
 969         }
 970 }
 971
 972 struct str_list {
 973         char **list;
 974         int num;
 975         int max;
 976 };
 977
 978 static errcode_t init_list(struct str_list *sl)
 979 {
 980         sl->num = 0;
 981         sl->max = 0;
 982         sl->list = malloc((sl->max+1) * sizeof(char *));
 983         if (!sl->list)
 984                 return ENOMEM;
 985         sl->list[0] = 0;
 986         return 0;
 987 }
 988
 989 static errcode_t push_string(struct str_list *sl, const char *str)
 990 {
 991         char **new_list;
 992
 993         if (sl->num >= sl->max) {
 994                 sl->max += 2;
 995                 new_list = realloc(sl->list, (sl->max+1) * sizeof(char *));
 996                 if (!new_list)
 997                         return ENOMEM;
 998                 sl->list = new_list;
 999         }
1000         sl->list[sl->num] = malloc(strlen(str)+1);
1001         if (sl->list[sl->num] == 0)
1002                 return ENOMEM;
1003         strcpy(sl->list[sl->num], str);
1004         sl->num++;
1005         sl->list[sl->num] = 0;
1006         return 0;
1007 }
1008
1009 static void print_str_list(char **list)
1010 {
1011         char **cpp;
1012
1013         for (cpp = list; *cpp; cpp++) {
1014                 printf("'%s'", *cpp);
1015                 if (cpp[1])
1016                         fputs(", ", stdout);
1017         }
1018         fputc('\n', stdout);
1019 }
1020
1021 /*
1022  * Return TRUE if the profile has the given subsection
1023  */
1024 static int profile_has_subsection(profile_t prof, const char *section,
1025                                   const char *subsection)
1026 {
1027         void                    *state;
1028         const char              *names[4];
1029         char                    *name;
1030         int                     ret = 0;
1031
1032         names[0] = section;
1033         names[1] = subsection;
1034         names[2] = 0;
1035
1036         if (profile_iterator_create(prof, names,
1037                                     PROFILE_ITER_LIST_SECTION |
1038                                     PROFILE_ITER_RELATIONS_ONLY, &state))
1039                 return 0;
1040
1041         if ((profile_iterator(&state, &name, 0) == 0) && name) {
1042                 free(name);
1043                 ret = 1;
1044         }
1045
1046         profile_iterator_free(&state);
1047         return ret;
1048 }
1049
1050 static char **parse_fs_type(const char *fs_type,
1051                             const char *usage_types,
1052                             struct ext2_super_block *sb,
1053                             blk64_t fs_blocks_count,
1054                             char *progname)
1055 {
1056         const char      *ext_type = 0;
1057         char            *parse_str;
1058         char            *profile_type = 0;
1059         char            *cp, *t;
1060         const char      *size_type;
1061         struct str_list list;
1062         unsigned long long meg;
1063         int             is_hurd = 0;
1064
1065         if (init_list(&list))
1066                 return 0;
1067
1068         if (creator_os && (!strcasecmp(creator_os, "GNU") ||
1069                            !strcasecmp(creator_os, "hurd")))
1070                 is_hurd = 1;
1071
1072         if (fs_type)
1073                 ext_type = fs_type;
1074         else if (is_hurd)
1075                 ext_type = "ext2";
1076         else if (!strcmp(program_name, "mke3fs"))
1077                 ext_type = "ext3";
1078         else if (!strcmp(program_name, "mke4fs"))
1079                 ext_type = "ext4";
1080         else if (progname) {
1081                 ext_type = strrchr(progname, '/');
1082                 if (ext_type)
1083                         ext_type++;
1084                 else
1085                         ext_type = progname;
1086
1087                 if (!strncmp(ext_type, "mkfs.", 5)) {
1088                         ext_type += 5;
1089                         if (ext_type[0] == 0)
1090                                 ext_type = 0;
1091                 } else
1092                         ext_type = 0;
1093         }
1094
1095         if (!ext_type) {
1096                 profile_get_string(profile, "defaults", "fs_type", 0,
1097                                    "ext2", &profile_type);
1098                 ext_type = profile_type;
1099                 if (!strcmp(ext_type, "ext2") && (journal_size != 0))
1100                         ext_type = "ext3";
1101         }
1102
1103
1104         if (!profile_has_subsection(profile, "fs_types", ext_type) &&
1105             strcmp(ext_type, "ext2")) {
1106                 printf(_("\nYour mke2fs.conf file does not define the "
1107                          "%s filesystem type.\n"), ext_type);
1108                 if (!strcmp(ext_type, "ext3") || !strcmp(ext_type, "ext4") ||
1109                     !strcmp(ext_type, "ext4dev")) {
1110                         printf("%s", _("You probably need to install an "
1111                                        "updated mke2fs.conf file.\n\n"));
1112                 }
1113                 if (!force) {
1114                         printf("%s", _("Aborting...\n"));
1115                         exit(1);
1116                 }
1117         }
1118
1119         meg = (1024 * 1024) / EXT2_BLOCK_SIZE(sb);
1120         if (fs_blocks_count < 3 * meg)
1121                 size_type = "floppy";
1122         else if (fs_blocks_count < 512 * meg)
1123                 size_type = "small";
1124         else if (fs_blocks_count < 4 * 1024 * 1024 * meg)
1125                 size_type = "default";
1126         else if (fs_blocks_count < 16 * 1024 * 1024 * meg)
1127                 size_type = "big";
1128         else
1129                 size_type = "huge";
1130
1131         if (!usage_types)
1132                 usage_types = size_type;
1133
1134         parse_str = malloc(strlen(usage_types)+1);
1135         if (!parse_str) {
1136                 free(profile_type);
1137                 free(list.list);
1138                 return 0;
1139         }
1140         strcpy(parse_str, usage_types);
1141
1142         if (ext_type)
1143                 push_string(&list, ext_type);
1144         cp = parse_str;
1145         while (1) {
1146                 t = strchr(cp, ',');
1147                 if (t)
1148                         *t = '\0';
1149
1150                 if (*cp) {
1151                         if (profile_has_subsection(profile, "fs_types", cp))
1152                                 push_string(&list, cp);
1153                         else if (strcmp(cp, "default") != 0)
1154                                 fprintf(stderr,
1155                                         _("\nWarning: the fs_type %s is not "
1156                                           "defined in mke2fs.conf\n\n"),
1157                                         cp);
1158                 }
1159                 if (t)
1160                         cp = t+1;
1161                 else
1162                         break;
1163         }
1164         free(parse_str);
1165         free(profile_type);
1166         if (is_hurd)
1167                 push_string(&list, "hurd");
1168         return (list.list);
1169 }
1170
1171 static char *get_string_from_profile(char **types, const char *opt,
1172                                      const char *def_val)
1173 {
1174         char *ret = 0;
1175         int i;
1176
1177         for (i=0; types[i]; i++);
1178         for (i-=1; i >=0 ; i--) {
1179                 profile_get_string(profile, "fs_types", types[i],
1180                                    opt, 0, &ret);
1181                 if (ret)
1182                         return ret;
1183         }
1184         profile_get_string(profile, "defaults", opt, 0, def_val, &ret);
1185         return (ret);
1186 }
1187
1188 static int get_int_from_profile(char **types, const char *opt, int def_val)
1189 {
1190         int ret;
1191         char **cpp;
1192
1193         profile_get_integer(profile, "defaults", opt, 0, def_val, &ret);
1194         for (cpp = types; *cpp; cpp++)
1195                 profile_get_integer(profile, "fs_types", *cpp, opt, ret, &ret);
1196         return ret;
1197 }
1198
1199 static double get_double_from_profile(char **types, const char *opt,
1200                                       double def_val)
1201 {
1202         double ret;
1203         char **cpp;
1204
1205         profile_get_double(profile, "defaults", opt, 0, def_val, &ret);
1206         for (cpp = types; *cpp; cpp++)
1207                 profile_get_double(profile, "fs_types", *cpp, opt, ret, &ret);
1208         return ret;
1209 }
1210
1211 static int get_bool_from_profile(char **types, const char *opt, int def_val)
1212 {
1213         int ret;
1214         char **cpp;
1215
1216         profile_get_boolean(profile, "defaults", opt, 0, def_val, &ret);
1217         for (cpp = types; *cpp; cpp++)
1218                 profile_get_boolean(profile, "fs_types", *cpp, opt, ret, &ret);
1219         return ret;
1220 }
1221
1222 extern const char *mke2fs_default_profile;
1223 static const char *default_files[] = { "<default>", 0 };
1224
1225 #ifdef HAVE_BLKID_PROBE_GET_TOPOLOGY
1226 /*
1227  * Sets the geometry of a device (stripe/stride), and returns the
1228  * device's alignment offset, if any, or a negative error.
1229  */
1230 static int get_device_geometry(const char *file,
1231                                struct ext2_super_block *fs_param,
1232                                int psector_size)
1233 {
1234         int rc = -1;
1235         int blocksize;
1236         blkid_probe pr;
1237         blkid_topology tp;
1238         unsigned long min_io;
1239         unsigned long opt_io;
1240         struct stat statbuf;
1241
1242         /* Nothing to do for a regular file */
1243         if (!stat(file, &statbuf) && S_ISREG(statbuf.st_mode))
1244                 return 0;
1245
1246         pr = blkid_new_probe_from_filename(file);
1247         if (!pr)
1248                 goto out;
1249
1250         tp = blkid_probe_get_topology(pr);
1251         if (!tp)
1252                 goto out;
1253
1254         min_io = blkid_topology_get_minimum_io_size(tp);
1255         opt_io = blkid_topology_get_optimal_io_size(tp);
1256         blocksize = EXT2_BLOCK_SIZE(fs_param);
1257         if ((min_io == 0) && (psector_size > blocksize))
1258                 min_io = psector_size;
1259         if ((opt_io == 0) && min_io)
1260                 opt_io = min_io;
1261         if ((opt_io == 0) && (psector_size > blocksize))
1262                 opt_io = psector_size;
1263
1264         /* setting stripe/stride to blocksize is pointless */
1265         if (min_io > blocksize)
1266                 fs_param->s_raid_stride = min_io / blocksize;
1267         if (opt_io > blocksize)
1268                 fs_param->s_raid_stripe_width = opt_io / blocksize;
1269
1270         rc = blkid_topology_get_alignment_offset(tp);
1271 out:
1272         blkid_free_probe(pr);
1273         return rc;
1274 }
1275 #endif
1276
1277 static void PRS(int argc, char *argv[])
1278 {
1279         int             b, c;
1280         int             cluster_size = 0;
1281         char            *tmp, **cpp;
1282         int             blocksize = 0;
1283         int             inode_ratio = 0;
1284         int             inode_size = 0;
1285         unsigned long   flex_bg_size = 0;
1286         double          reserved_ratio = -1.0;
1287         int             lsector_size = 0, psector_size = 0;
1288         int             show_version_only = 0;
1289         unsigned long long num_inodes = 0; /* unsigned long long to catch too-large input */
1290         errcode_t       retval;
1291         char *          oldpath = getenv("PATH");
1292         char *          extended_opts = 0;
1293         char *          fs_type = 0;
1294         char *          usage_types = 0;
1295         blk64_t         dev_size;
1296         /*
1297          * NOTE: A few words about fs_blocks_count and blocksize:
1298          *
1299          * Initially, blocksize is set to zero, which implies 1024.
1300          * If -b is specified, blocksize is updated to the user's value.
1301          *
1302          * Next, the device size or the user's "blocks" command line argument
1303          * is used to set fs_blocks_count; the units are blocksize.
1304          *
1305          * Later, if blocksize hasn't been set and the profile specifies a
1306          * blocksize, then blocksize is updated and fs_blocks_count is scaled
1307          * appropriately.  Note the change in units!
1308          *
1309          * Finally, we complain about fs_blocks_count > 2^32 on a non-64bit fs.
1310          */
1311         blk64_t         fs_blocks_count = 0;
1312 #ifdef __linux__
1313         struct          utsname ut;
1314 #endif
1315         long            sysval;
1316         int             s_opt = -1, r_opt = -1;
1317         char            *fs_features = 0;
1318         int             use_bsize;
1319         char            *newpath;
1320         int             pathlen = sizeof(PATH_SET) + 1;
1321
1322         if (oldpath)
1323                 pathlen += strlen(oldpath);
1324         newpath = malloc(pathlen);
1325         if (!newpath) {
1326                 fprintf(stderr, "%s",
1327                         _("Couldn't allocate memory for new PATH.\n"));
1328                 exit(1);
1329         }
1330         strcpy(newpath, PATH_SET);
1331
1332         /* Update our PATH to include /sbin  */
1333         if (oldpath) {
1334                 strcat (newpath, ":");
1335                 strcat (newpath, oldpath);
1336         }
1337         putenv (newpath);
1338
1339         tmp = getenv("MKE2FS_SYNC");
1340         if (tmp)
1341                 sync_kludge = atoi(tmp);
1342
1343         /* Determine the system page size if possible */
1344 #ifdef HAVE_SYSCONF
1345 #if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE))
1346 #define _SC_PAGESIZE _SC_PAGE_SIZE
1347 #endif
1348 #ifdef _SC_PAGESIZE
1349         sysval = sysconf(_SC_PAGESIZE);
1350         if (sysval > 0)
1351                 sys_page_size = sysval;
1352 #endif /* _SC_PAGESIZE */
1353 #endif /* HAVE_SYSCONF */
1354
1355         if ((tmp = getenv("MKE2FS_CONFIG")) != NULL)
1356                 config_fn[0] = tmp;
1357         profile_set_syntax_err_cb(syntax_err_report);
1358         retval = profile_init(config_fn, &profile);
1359         if (retval == ENOENT) {
1360                 retval = profile_init(default_files, &profile);
1361                 if (retval)
1362                         goto profile_error;
1363                 retval = profile_set_default(profile, mke2fs_default_profile);
1364                 if (retval)
1365                         goto profile_error;
1366         } else if (retval) {
1367 profile_error:
1368                 fprintf(stderr, _("Couldn't init profile successfully"
1369                                   " (error: %ld).\n"), retval);
1370                 exit(1);
1371         }
1372
1373         setbuf(stdout, NULL);
1374         setbuf(stderr, NULL);
1375         add_error_table(&et_ext2_error_table);
1376         add_error_table(&et_prof_error_table);
1377         memset(&fs_param, 0, sizeof(struct ext2_super_block));
1378         fs_param.s_rev_level = 1;  /* Create revision 1 filesystems now */
1379
1380 #ifdef __linux__
1381         if (uname(&ut)) {
1382                 perror("uname");
1383                 exit(1);
1384         }
1385         linux_version_code = parse_version_number(ut.release);
1386         if (linux_version_code && linux_version_code < (2*65536 + 2*256))
1387                 fs_param.s_rev_level = 0;
1388 #endif
1389
1390         if (argc && *argv) {
1391                 program_name = get_progname(*argv);
1392
1393                 /* If called as mkfs.ext3, create a journal inode */
1394                 if (!strcmp(program_name, "mkfs.ext3") ||
1395                     !strcmp(program_name, "mke3fs"))
1396                         journal_size = -1;
1397         }
1398
1399         while ((c = getopt (argc, argv,
1400                     "b:cg:i:jl:m:no:qr:s:t:vC:DE:FG:I:J:KL:M:N:O:R:ST:U:V")) != EOF) {
1401                 switch (c) {
1402                 case 'b':
1403                         blocksize = parse_num_blocks2(optarg, -1);
1404                         b = (blocksize > 0) ? blocksize : -blocksize;
1405                         if (b < EXT2_MIN_BLOCK_SIZE ||
1406                             b > EXT2_MAX_BLOCK_SIZE) {
1407                                 com_err(program_name, 0,
1408                                         _("invalid block size - %s"), optarg);
1409                                 exit(1);
1410                         }
1411                         if (blocksize > 4096)
1412                                 fprintf(stderr, _("Warning: blocksize %d not "
1413                                                   "usable on most systems.\n"),
1414                                         blocksize);
1415                         if (blocksize > 0)
1416                                 fs_param.s_log_block_size =
1417                                         int_log2(blocksize >>
1418                                                  EXT2_MIN_BLOCK_LOG_SIZE);
1419                         break;
1420                 case 'c':       /* Check for bad blocks */
1421                         cflag++;
1422                         break;
1423                 case 'C':
1424                         cluster_size = parse_num_blocks2(optarg, -1);
1425                         if (cluster_size <= EXT2_MIN_CLUSTER_SIZE ||
1426                             cluster_size > EXT2_MAX_CLUSTER_SIZE) {
1427                                 com_err(program_name, 0,
1428                                         _("invalid cluster size - %s"),
1429                                         optarg);
1430                                 exit(1);
1431                         }
1432                         break;
1433                 case 'D':
1434                         direct_io = 1;
1435                         break;
1436                 case 'R':
1437                         com_err(program_name, 0, "%s",
1438                                 _("'-R' is deprecated, use '-E' instead"));
1439                         /* fallthrough */
1440                 case 'E':
1441                         extended_opts = optarg;
1442                         break;
1443                 case 'F':
1444                         force++;
1445                         break;
1446                 case 'g':
1447                         fs_param.s_blocks_per_group = strtoul(optarg, &tmp, 0);
1448                         if (*tmp) {
1449                                 com_err(program_name, 0, "%s",
1450                                 _("Illegal number for blocks per group"));
1451                                 exit(1);
1452                         }
1453                         if ((fs_param.s_blocks_per_group % 8) != 0) {
1454                                 com_err(program_name, 0, "%s",
1455                                 _("blocks per group must be multiple of 8"));
1456                                 exit(1);
1457                         }
1458                         break;
1459                 case 'G':
1460                         flex_bg_size = strtoul(optarg, &tmp, 0);
1461                         if (*tmp) {
1462                                 com_err(program_name, 0, "%s",
1463                                         _("Illegal number for flex_bg size"));
1464                                 exit(1);
1465                         }
1466                         if (flex_bg_size < 1 ||
1467                             (flex_bg_size & (flex_bg_size-1)) != 0) {
1468                                 com_err(program_name, 0, "%s",
1469                                         _("flex_bg size must be a power of 2"));
1470                                 exit(1);
1471                         }
1472                         break;
1473                 case 'i':
1474                         inode_ratio = strtoul(optarg, &tmp, 0);
1475                         if (inode_ratio < EXT2_MIN_BLOCK_SIZE ||
1476                             inode_ratio > EXT2_MAX_BLOCK_SIZE * 1024 ||
1477                             *tmp) {
1478                                 com_err(program_name, 0,
1479                                         _("invalid inode ratio %s (min %d/max %d)"),
1480                                         optarg, EXT2_MIN_BLOCK_SIZE,
1481                                         EXT2_MAX_BLOCK_SIZE * 1024);
1482                                 exit(1);
1483                         }
1484                         break;
1485                 case 'I':
1486                         inode_size = strtoul(optarg, &tmp, 0);
1487                         if (*tmp) {
1488                                 com_err(program_name, 0,
1489                                         _("invalid inode size - %s"), optarg);
1490                                 exit(1);
1491                         }
1492                         break;
1493                 case 'j':
1494                         if (!journal_size)
1495                                 journal_size = -1;
1496                         break;
1497                 case 'J':
1498                         parse_journal_opts(optarg);
1499                         break;
1500                 case 'K':
1501                         fprintf(stderr, "%s",
1502                                 _("Warning: -K option is deprecated and "
1503                                   "should not be used anymore. Use "
1504                                   "\'-E nodiscard\' extended option "
1505                                   "instead!\n"));
1506                         discard = 0;
1507                         break;
1508                 case 'l':
1509                         bad_blocks_filename = realloc(bad_blocks_filename,
1510                                                       strlen(optarg) + 1);
1511                         if (!bad_blocks_filename) {
1512                                 com_err(program_name, ENOMEM, "%s",
1513                                         _("in malloc for bad_blocks_filename"));
1514                                 exit(1);
1515                         }
1516                         strcpy(bad_blocks_filename, optarg);
1517                         break;
1518                 case 'L':
1519                         volume_label = optarg;
1520                         break;
1521                 case 'm':
1522                         reserved_ratio = strtod(optarg, &tmp);
1523                         if ( *tmp || reserved_ratio > 50 ||
1524                              reserved_ratio < 0) {
1525                                 com_err(program_name, 0,
1526                                         _("invalid reserved blocks percent - %s"),
1527                                         optarg);
1528                                 exit(1);
1529                         }
1530                         break;
1531                 case 'M':
1532                         mount_dir = optarg;
1533                         break;
1534                 case 'n':
1535                         noaction++;
1536                         break;
1537                 case 'N':
1538                         num_inodes = strtoul(optarg, &tmp, 0);
1539                         if (*tmp) {
1540                                 com_err(program_name, 0,
1541                                         _("bad num inodes - %s"), optarg);
1542                                         exit(1);
1543                         }
1544                         break;
1545                 case 'o':
1546                         creator_os = optarg;
1547                         break;
1548                 case 'O':
1549                         fs_features = optarg;
1550                         break;
1551                 case 'q':
1552                         quiet = 1;
1553                         break;
1554                 case 'r':
1555                         r_opt = strtoul(optarg, &tmp, 0);
1556                         if (*tmp) {
1557                                 com_err(program_name, 0,
1558                                         _("bad revision level - %s"), optarg);
1559                                 exit(1);
1560                         }
1561                         fs_param.s_rev_level = r_opt;
1562                         break;
1563                 case 's':       /* deprecated */
1564                         s_opt = atoi(optarg);
1565                         break;
1566                 case 'S':
1567                         super_only = 1;
1568                         break;
1569                 case 't':
1570                         if (fs_type) {
1571                                 com_err(program_name, 0, "%s",
1572                                     _("The -t option may only be used once"));
1573                                 exit(1);
1574                         }
1575                         fs_type = strdup(optarg);
1576                         break;
1577                 case 'T':
1578                         if (usage_types) {
1579                                 com_err(program_name, 0, "%s",
1580                                     _("The -T option may only be used once"));
1581                                 exit(1);
1582                         }
1583                         usage_types = strdup(optarg);
1584                         break;
1585                 case 'U':
1586                         fs_uuid = optarg;
1587                         break;
1588                 case 'v':
1589                         verbose = 1;
1590                         break;
1591                 case 'V':
1592                         /* Print version number and exit */
1593                         show_version_only++;
1594                         break;
1595                 default:
1596                         usage();
1597                 }
1598         }
1599         if ((optind == argc) && !show_version_only)
1600                 usage();
1601         device_name = argv[optind++];
1602
1603         if (!quiet || show_version_only)
1604                 fprintf (stderr, "mke2fs %s (%s)\n", E2FSPROGS_VERSION,
1605                          E2FSPROGS_DATE);
1606
1607         if (show_version_only) {
1608                 fprintf(stderr, _("\tUsing %s\n"),
1609                         error_message(EXT2_ET_BASE));
1610                 exit(0);
1611         }
1612
1613         /*
1614          * If there's no blocksize specified and there is a journal
1615          * device, use it to figure out the blocksize
1616          */
1617         if (blocksize <= 0 && journal_device) {
1618                 ext2_filsys     jfs;
1619                 io_manager      io_ptr;
1620
1621 #ifdef CONFIG_TESTIO_DEBUG
1622                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1623                         io_ptr = test_io_manager;
1624                         test_io_backing_manager = unix_io_manager;
1625                 } else
1626 #endif
1627                         io_ptr = unix_io_manager;
1628                 retval = ext2fs_open(journal_device,
1629                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1630                                      0, io_ptr, &jfs);
1631                 if (retval) {
1632                         com_err(program_name, retval,
1633                                 _("while trying to open journal device %s\n"),
1634                                 journal_device);
1635                         exit(1);
1636                 }
1637                 if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) {
1638                         com_err(program_name, 0,
1639                                 _("Journal dev blocksize (%d) smaller than "
1640                                   "minimum blocksize %d\n"), jfs->blocksize,
1641                                 -blocksize);
1642                         exit(1);
1643                 }
1644                 blocksize = jfs->blocksize;
1645                 printf(_("Using journal device's blocksize: %d\n"), blocksize);
1646                 fs_param.s_log_block_size =
1647                         int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
1648                 ext2fs_close(jfs);
1649         }
1650
1651         if (optind < argc) {
1652                 fs_blocks_count = parse_num_blocks2(argv[optind++],
1653                                                    fs_param.s_log_block_size);
1654                 if (!fs_blocks_count) {
1655                         com_err(program_name, 0,
1656                                 _("invalid blocks '%s' on device '%s'"),
1657                                 argv[optind - 1], device_name);
1658                         exit(1);
1659                 }
1660         }
1661         if (optind < argc)
1662                 usage();
1663
1664         if (!force)
1665                 check_plausibility(device_name);
1666         check_mount(device_name, force, _("filesystem"));
1667
1668         /* Determine the size of the device (if possible) */
1669         if (noaction && fs_blocks_count) {
1670                 dev_size = fs_blocks_count;
1671                 retval = 0;
1672         } else
1673                 retval = ext2fs_get_device_size2(device_name,
1674                                                  EXT2_BLOCK_SIZE(&fs_param),
1675                                                  &dev_size);
1676
1677         if (retval && (retval != EXT2_ET_UNIMPLEMENTED)) {
1678                 com_err(program_name, retval, "%s",
1679                         _("while trying to determine filesystem size"));
1680                 exit(1);
1681         }
1682         if (!fs_blocks_count) {
1683                 if (retval == EXT2_ET_UNIMPLEMENTED) {
1684                         com_err(program_name, 0, "%s",
1685                                 _("Couldn't determine device size; you "
1686                                 "must specify\nthe size of the "
1687                                 "filesystem\n"));
1688                         exit(1);
1689                 } else {
1690                         if (dev_size == 0) {
1691                                 com_err(program_name, 0, "%s",
1692                                 _("Device size reported to be zero.  "
1693                                   "Invalid partition specified, or\n\t"
1694                                   "partition table wasn't reread "
1695                                   "after running fdisk, due to\n\t"
1696                                   "a modified partition being busy "
1697                                   "and in use.  You may need to reboot\n\t"
1698                                   "to re-read your partition table.\n"
1699                                   ));
1700                                 exit(1);
1701                         }
1702                         fs_blocks_count = dev_size;
1703                         if (sys_page_size > EXT2_BLOCK_SIZE(&fs_param))
1704                                 fs_blocks_count &= ~((blk64_t) ((sys_page_size /
1705                                              EXT2_BLOCK_SIZE(&fs_param))-1));
1706                 }
1707         } else if (!force && (fs_blocks_count > dev_size)) {
1708                 com_err(program_name, 0, "%s",
1709                         _("Filesystem larger than apparent device size."));
1710                 proceed_question();
1711         }
1712
1713         if (!fs_type)
1714                 profile_get_string(profile, "devices", device_name,
1715                                    "fs_type", 0, &fs_type);
1716         if (!usage_types)
1717                 profile_get_string(profile, "devices", device_name,
1718                                    "usage_types", 0, &usage_types);
1719
1720         /*
1721          * We have the file system (or device) size, so we can now
1722          * determine the appropriate file system types so the fs can
1723          * be appropriately configured.
1724          */
1725         fs_types = parse_fs_type(fs_type, usage_types, &fs_param,
1726                                  fs_blocks_count ? fs_blocks_count : dev_size,
1727                                  argv[0]);
1728         if (!fs_types) {
1729                 fprintf(stderr, "%s", _("Failed to parse fs types list\n"));
1730                 exit(1);
1731         }
1732
1733         /* Figure out what features should be enabled */
1734
1735         tmp = NULL;
1736         if (fs_param.s_rev_level != EXT2_GOOD_OLD_REV) {
1737                 tmp = get_string_from_profile(fs_types, "base_features",
1738                       "sparse_super,filetype,resize_inode,dir_index");
1739                 edit_feature(tmp, &fs_param.s_feature_compat);
1740                 free(tmp);
1741
1742                 /* And which mount options as well */
1743                 tmp = get_string_from_profile(fs_types, "default_mntopts",
1744                                               "acl,user_xattr");
1745                 edit_mntopts(tmp, &fs_param.s_default_mount_opts);
1746                 if (tmp)
1747                         free(tmp);
1748
1749                 for (cpp = fs_types; *cpp; cpp++) {
1750                         tmp = NULL;
1751                         profile_get_string(profile, "fs_types", *cpp,
1752                                            "features", "", &tmp);
1753                         if (tmp && *tmp)
1754                                 edit_feature(tmp, &fs_param.s_feature_compat);
1755                         if (tmp)
1756                                 free(tmp);
1757                 }
1758                 tmp = get_string_from_profile(fs_types, "default_features",
1759                                               "");
1760         }
1761         edit_feature(fs_features ? fs_features : tmp,
1762                      &fs_param.s_feature_compat);
1763         if (tmp)
1764                 free(tmp);
1765
1766         /* Get the hardware sector sizes, if available */
1767         retval = ext2fs_get_device_sectsize(device_name, &lsector_size);
1768         if (retval) {
1769                 com_err(program_name, retval, "%s",
1770                         _("while trying to determine hardware sector size"));
1771                 exit(1);
1772         }
1773         retval = ext2fs_get_device_phys_sectsize(device_name, &psector_size);
1774         if (retval) {
1775                 com_err(program_name, retval, "%s",
1776                         _("while trying to determine physical sector size"));
1777                 exit(1);
1778         }
1779
1780         tmp = getenv("MKE2FS_DEVICE_SECTSIZE");
1781         if (tmp != NULL)
1782                 lsector_size = atoi(tmp);
1783         tmp = getenv("MKE2FS_DEVICE_PHYS_SECTSIZE");
1784         if (tmp != NULL)
1785                 psector_size = atoi(tmp);
1786
1787         /* Older kernels may not have physical/logical distinction */
1788         if (!psector_size)
1789                 psector_size = lsector_size;
1790
1791         if (blocksize <= 0) {
1792                 use_bsize = get_int_from_profile(fs_types, "blocksize", 4096);
1793
1794                 if (use_bsize == -1) {
1795                         use_bsize = sys_page_size;
1796                         if ((linux_version_code < (2*65536 + 6*256)) &&
1797                             (use_bsize > 4096))
1798                                 use_bsize = 4096;
1799                 }
1800                 if (lsector_size && use_bsize < lsector_size)
1801                         use_bsize = lsector_size;
1802                 if ((blocksize < 0) && (use_bsize < (-blocksize)))
1803                         use_bsize = -blocksize;
1804                 blocksize = use_bsize;
1805                 fs_blocks_count /= (blocksize / 1024);
1806         } else {
1807                 if (blocksize < lsector_size) {                 /* Impossible */
1808                         com_err(program_name, EINVAL, "%s",
1809                                 _("while setting blocksize; too small "
1810                                   "for device\n"));
1811                         exit(1);
1812                 } else if ((blocksize < psector_size) &&
1813                            (psector_size <= sys_page_size)) {   /* Suboptimal */
1814                         fprintf(stderr, _("Warning: specified blocksize %d is "
1815                                 "less than device physical sectorsize %d\n"),
1816                                 blocksize, psector_size);
1817                 }
1818         }
1819
1820         fs_param.s_log_block_size =
1821                 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
1822
1823         /*
1824          * We now need to do a sanity check of fs_blocks_count for
1825          * 32-bit vs 64-bit block number support.
1826          */
1827         if ((fs_blocks_count > MAX_32_NUM) &&
1828             !(fs_param.s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT) &&
1829             get_bool_from_profile(fs_types, "auto_64-bit_support", 0)) {
1830                 fs_param.s_feature_incompat |= EXT4_FEATURE_INCOMPAT_64BIT;
1831                 fs_param.s_feature_compat &= ~EXT2_FEATURE_COMPAT_RESIZE_INODE;
1832         }
1833         if ((fs_blocks_count > MAX_32_NUM) &&
1834             !(fs_param.s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT)) {
1835                 fprintf(stderr, _("%s: Size of device (0x%llx blocks) %s "
1836                                   "too big to be expressed\n\t"
1837                                   "in 32 bits using a blocksize of %d.\n"),
1838                         program_name, fs_blocks_count, device_name,
1839                         EXT2_BLOCK_SIZE(&fs_param));
1840                 exit(1);
1841         }
1842
1843         ext2fs_blocks_count_set(&fs_param, fs_blocks_count);
1844
1845         if (fs_param.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
1846                 fs_types[0] = strdup("journal");
1847                 fs_types[1] = 0;
1848         }
1849
1850         if (verbose) {
1851                 fputs(_("fs_types for mke2fs.conf resolution: "), stdout);
1852                 print_str_list(fs_types);
1853         }
1854
1855         if (r_opt == EXT2_GOOD_OLD_REV &&
1856             (fs_param.s_feature_compat || fs_param.s_feature_incompat ||
1857              fs_param.s_feature_ro_compat)) {
1858                 fprintf(stderr, "%s", _("Filesystem features not supported "
1859                                         "with revision 0 filesystems\n"));
1860                 exit(1);
1861         }
1862
1863         if (s_opt > 0) {
1864                 if (r_opt == EXT2_GOOD_OLD_REV) {
1865                         fprintf(stderr, "%s",
1866                                 _("Sparse superblocks not supported "
1867                                   "with revision 0 filesystems\n"));
1868                         exit(1);
1869                 }
1870                 fs_param.s_feature_ro_compat |=
1871                         EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1872         } else if (s_opt == 0)
1873                 fs_param.s_feature_ro_compat &=
1874                         ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1875
1876         if (journal_size != 0) {
1877                 if (r_opt == EXT2_GOOD_OLD_REV) {
1878                         fprintf(stderr, "%s", _("Journals not supported with "
1879                                                 "revision 0 filesystems\n"));
1880                         exit(1);
1881                 }
1882                 fs_param.s_feature_compat |=
1883                         EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1884         }
1885
1886         /* Get reserved_ratio from profile if not specified on cmd line. */
1887         if (reserved_ratio < 0.0) {
1888                 reserved_ratio = get_double_from_profile(
1889                                         fs_types, "reserved_ratio", 5.0);
1890                 if (reserved_ratio > 50 || reserved_ratio < 0) {
1891                         com_err(program_name, 0,
1892                                 _("invalid reserved blocks percent - %lf"),
1893                                 reserved_ratio);
1894                         exit(1);
1895                 }
1896         }
1897
1898         if (fs_param.s_feature_incompat &
1899             EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
1900                 reserved_ratio = 0;
1901                 fs_param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV;
1902                 fs_param.s_feature_compat = 0;
1903                 fs_param.s_feature_ro_compat = 0;
1904         }
1905
1906         /* Check the user's mkfs options for 64bit */
1907         if ((fs_param.s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT) &&
1908             !(fs_param.s_feature_incompat & EXT3_FEATURE_INCOMPAT_EXTENTS)) {
1909                 printf("%s", _("Extents MUST be enabled for a 64-bit "
1910                                "filesystem.  Pass -O extents to rectify.\n"));
1911                 exit(1);
1912         }
1913
1914         /* Set first meta blockgroup via an environment variable */
1915         /* (this is mostly for debugging purposes) */
1916         if ((fs_param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) &&
1917             ((tmp = getenv("MKE2FS_FIRST_META_BG"))))
1918                 fs_param.s_first_meta_bg = atoi(tmp);
1919         if (fs_param.s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_BIGALLOC) {
1920                 if (!cluster_size)
1921                         cluster_size = get_int_from_profile(fs_types,
1922                                                             "cluster_size",
1923                                                             blocksize*16);
1924                 fs_param.s_log_cluster_size =
1925                         int_log2(cluster_size >> EXT2_MIN_CLUSTER_LOG_SIZE);
1926                 if (fs_param.s_log_cluster_size &&
1927                     fs_param.s_log_cluster_size < fs_param.s_log_block_size) {
1928                         com_err(program_name, 0, "%s",
1929                                 _("The cluster size may not be "
1930                                   "smaller than the block size.\n"));
1931                         exit(1);
1932                 }
1933         } else if (cluster_size) {
1934                 com_err(program_name, 0, "%s",
1935                         _("specifying a cluster size requires the "
1936                           "bigalloc feature"));
1937                 exit(1);
1938         } else
1939                 fs_param.s_log_cluster_size = fs_param.s_log_block_size;
1940
1941         if (inode_ratio == 0) {
1942                 inode_ratio = get_int_from_profile(fs_types, "inode_ratio",
1943                                                    8192);
1944                 if (inode_ratio < blocksize)
1945                         inode_ratio = blocksize;
1946                 if (inode_ratio < EXT2_CLUSTER_SIZE(&fs_param))
1947                         inode_ratio = EXT2_CLUSTER_SIZE(&fs_param);
1948         }
1949
1950 #ifdef HAVE_BLKID_PROBE_GET_TOPOLOGY
1951         retval = get_device_geometry(device_name, &fs_param, psector_size);
1952         if (retval < 0) {
1953                 fprintf(stderr,
1954                         _("warning: Unable to get device geometry for %s\n"),
1955                         device_name);
1956         } else if (retval) {
1957                 printf(_("%s alignment is offset by %lu bytes.\n"),
1958                        device_name, retval);
1959                 printf(_("This may result in very poor performance, "
1960                           "(re)-partitioning suggested.\n"));
1961         }
1962 #endif
1963
1964         blocksize = EXT2_BLOCK_SIZE(&fs_param);
1965
1966         /*
1967          * Initialize s_desc_size so that the parse_extended_opts()
1968          * can correctly handle "-E resize=NNN" if the 64-bit option
1969          * is set.
1970          */
1971         if (fs_param.s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT)
1972                 fs_param.s_desc_size = EXT2_MIN_DESC_SIZE_64BIT;
1973
1974         /* This check should happen beyond the last assignment to blocksize */
1975         if (blocksize > sys_page_size) {
1976                 if (!force) {
1977                         com_err(program_name, 0,
1978                                 _("%d-byte blocks too big for system (max %d)"),
1979                                 blocksize, sys_page_size);
1980                         proceed_question();
1981                 }
1982                 fprintf(stderr, _("Warning: %d-byte blocks too big for system "
1983                                   "(max %d), forced to continue\n"),
1984                         blocksize, sys_page_size);
1985         }
1986
1987         lazy_itable_init = 0;
1988         if (access("/sys/fs/ext4/features/lazy_itable_init", R_OK) == 0)
1989                 lazy_itable_init = 1;
1990
1991         lazy_itable_init = get_bool_from_profile(fs_types,
1992                                                  "lazy_itable_init",
1993                                                  lazy_itable_init);
1994         discard = get_bool_from_profile(fs_types, "discard" , discard);
1995         journal_flags |= get_bool_from_profile(fs_types,
1996                                                "lazy_journal_init", 0) ?
1997                                                EXT2_MKJOURNAL_LAZYINIT : 0;
1998         journal_flags |= EXT2_MKJOURNAL_NO_MNT_CHECK;
1999
2000         /* Get options from profile */
2001         for (cpp = fs_types; *cpp; cpp++) {
2002                 tmp = NULL;
2003                 profile_get_string(profile, "fs_types", *cpp, "options", "", &tmp);
2004                         if (tmp && *tmp)
2005                                 parse_extended_opts(&fs_param, tmp);
2006                         free(tmp);
2007         }
2008
2009         if (extended_opts)
2010                 parse_extended_opts(&fs_param, extended_opts);
2011
2012         /* Can't support bigalloc feature without extents feature */
2013         if ((fs_param.s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_BIGALLOC) &&
2014             !(fs_param.s_feature_incompat & EXT3_FEATURE_INCOMPAT_EXTENTS)) {
2015                 com_err(program_name, 0, "%s",
2016                         _("Can't support bigalloc feature without "
2017                           "extents feature"));
2018                 exit(1);
2019         }
2020
2021         if ((fs_param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) &&
2022             (fs_param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE)) {
2023                 fprintf(stderr, "%s", _("The resize_inode and meta_bg "
2024                                         "features are not compatible.\n"
2025                                         "They can not be both enabled "
2026                                         "simultaneously.\n"));
2027                 exit(1);
2028         }
2029
2030         if (!quiet &&
2031             (fs_param.s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_BIGALLOC))
2032                 fprintf(stderr, "%s", _("\nWarning: the bigalloc feature is "
2033                                   "still under development\n"
2034                                   "See https://ext4.wiki.kernel.org/"
2035                                   "index.php/Bigalloc for more information\n\n"));
2036
2037         if (!quiet &&
2038             (fs_param.s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_QUOTA))
2039                 fprintf(stderr, "%s", _("\nWarning: the quota feature is "
2040                                   "still under development\n"
2041                                   "See https://ext4.wiki.kernel.org/"
2042                                   "index.php/Quota for more information\n\n"));
2043
2044         /* Since sparse_super is the default, we would only have a problem
2045          * here if it was explicitly disabled.
2046          */
2047         if ((fs_param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE) &&
2048             !(fs_param.s_feature_ro_compat&EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
2049                 com_err(program_name, 0, "%s",
2050                         _("reserved online resize blocks not supported "
2051                           "on non-sparse filesystem"));
2052                 exit(1);
2053         }
2054
2055         if (fs_param.s_blocks_per_group) {
2056                 if (fs_param.s_blocks_per_group < 256 ||
2057                     fs_param.s_blocks_per_group > 8 * (unsigned) blocksize) {
2058                         com_err(program_name, 0, "%s",
2059                                 _("blocks per group count out of range"));
2060                         exit(1);
2061                 }
2062         }
2063
2064         /*
2065          * If the bigalloc feature is enabled, then the -g option will
2066          * specify the number of clusters per group.
2067          */
2068         if (fs_param.s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_BIGALLOC) {
2069                 fs_param.s_clusters_per_group = fs_param.s_blocks_per_group;
2070                 fs_param.s_blocks_per_group = 0;
2071         }
2072
2073         if (inode_size == 0)
2074                 inode_size = get_int_from_profile(fs_types, "inode_size", 0);
2075         if (!flex_bg_size && (fs_param.s_feature_incompat &
2076                               EXT4_FEATURE_INCOMPAT_FLEX_BG))
2077                 flex_bg_size = get_int_from_profile(fs_types,
2078                                                     "flex_bg_size", 16);
2079         if (flex_bg_size) {
2080                 if (!(fs_param.s_feature_incompat &
2081                       EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
2082                         com_err(program_name, 0, "%s",
2083                                 _("Flex_bg feature not enabled, so "
2084                                   "flex_bg size may not be specified"));
2085                         exit(1);
2086                 }
2087                 fs_param.s_log_groups_per_flex = int_log2(flex_bg_size);
2088         }
2089
2090         if (inode_size && fs_param.s_rev_level >= EXT2_DYNAMIC_REV) {
2091                 if (inode_size < EXT2_GOOD_OLD_INODE_SIZE ||
2092                     inode_size > EXT2_BLOCK_SIZE(&fs_param) ||
2093                     inode_size & (inode_size - 1)) {
2094                         com_err(program_name, 0,
2095                                 _("invalid inode size %d (min %d/max %d)"),
2096                                 inode_size, EXT2_GOOD_OLD_INODE_SIZE,
2097                                 blocksize);
2098                         exit(1);
2099                 }
2100                 fs_param.s_inode_size = inode_size;
2101         }
2102
2103         /* Make sure number of inodes specified will fit in 32 bits */
2104         if (num_inodes == 0) {
2105                 unsigned long long n;
2106                 n = ext2fs_blocks_count(&fs_param) * blocksize / inode_ratio;
2107                 if (n > MAX_32_NUM) {
2108                         if (fs_param.s_feature_incompat &
2109                             EXT4_FEATURE_INCOMPAT_64BIT)
2110                                 num_inodes = MAX_32_NUM;
2111                         else {
2112                                 com_err(program_name, 0,
2113                                         _("too many inodes (%llu), raise "
2114                                           "inode ratio?"), n);
2115                                 exit(1);
2116                         }
2117                 }
2118         } else if (num_inodes > MAX_32_NUM) {
2119                 com_err(program_name, 0,
2120                         _("too many inodes (%llu), specify < 2^32 inodes"),
2121                           num_inodes);
2122                 exit(1);
2123         }
2124         /*
2125          * Calculate number of inodes based on the inode ratio
2126          */
2127         fs_param.s_inodes_count = num_inodes ? num_inodes :
2128                 (ext2fs_blocks_count(&fs_param) * blocksize) / inode_ratio;
2129
2130         if ((((unsigned long long)fs_param.s_inodes_count) *
2131              (inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE)) >=
2132             ((ext2fs_blocks_count(&fs_param)) *
2133              EXT2_BLOCK_SIZE(&fs_param))) {
2134                 com_err(program_name, 0, _("inode_size (%u) * inodes_count "
2135                                           "(%u) too big for a\n\t"
2136                                           "filesystem with %llu blocks, "
2137                                           "specify higher inode_ratio (-i)\n\t"
2138                                           "or lower inode count (-N).\n"),
2139                         inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE,
2140                         fs_param.s_inodes_count,
2141                         (unsigned long long) ext2fs_blocks_count(&fs_param));
2142                 exit(1);
2143         }
2144
2145         /*
2146          * Calculate number of blocks to reserve
2147          */
2148         ext2fs_r_blocks_count_set(&fs_param, reserved_ratio *
2149                                   ext2fs_blocks_count(&fs_param) / 100.0);
2150
2151         free(fs_type);
2152         free(usage_types);
2153 }
2154
2155 static int should_do_undo(const char *name)
2156 {
2157         errcode_t retval;
2158         io_channel channel;
2159         __u16   s_magic;
2160         struct ext2_super_block super;
2161         io_manager manager = unix_io_manager;
2162         int csum_flag, force_undo;
2163
2164         csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(&fs_param,
2165                                                EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
2166         force_undo = get_int_from_profile(fs_types, "force_undo", 0);
2167         if (!force_undo && (!csum_flag || !lazy_itable_init))
2168                 return 0;
2169
2170         retval = manager->open(name, IO_FLAG_EXCLUSIVE,  &channel);
2171         if (retval) {
2172                 /*
2173                  * We don't handle error cases instead we
2174                  * declare that the file system doesn't exist
2175                  * and let the rest of mke2fs take care of
2176                  * error
2177                  */
2178                 retval = 0;
2179                 goto open_err_out;
2180         }
2181
2182         io_channel_set_blksize(channel, SUPERBLOCK_OFFSET);
2183         retval = io_channel_read_blk64(channel, 1, -SUPERBLOCK_SIZE, &super);
2184         if (retval) {
2185                 retval = 0;
2186                 goto err_out;
2187         }
2188
2189 #if defined(WORDS_BIGENDIAN)
2190         s_magic = ext2fs_swab16(super.s_magic);
2191 #else
2192         s_magic = super.s_magic;
2193 #endif
2194
2195         if (s_magic == EXT2_SUPER_MAGIC)
2196                 retval = 1;
2197
2198 err_out:
2199         io_channel_close(channel);
2200
2201 open_err_out:
2202
2203         return retval;
2204 }
2205
2206 static int mke2fs_setup_tdb(const char *name, io_manager *io_ptr)
2207 {
2208         errcode_t retval = ENOMEM;
2209         char *tdb_dir = NULL, *tdb_file = NULL;
2210         char *dev_name, *tmp_name;
2211         int free_tdb_dir = 0;
2212
2213         /*
2214          * Configuration via a conf file would be
2215          * nice
2216          */
2217         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2218         if (!tdb_dir) {
2219                 profile_get_string(profile, "defaults",
2220                                    "undo_dir", 0, "/var/lib/e2fsprogs",
2221                                    &tdb_dir);
2222                 free_tdb_dir = 1;
2223         }
2224
2225         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2226             access(tdb_dir, W_OK)) {
2227                 if (free_tdb_dir)
2228                         free(tdb_dir);
2229                 return 0;
2230         }
2231
2232         tmp_name = strdup(name);
2233         if (!tmp_name)
2234                 goto errout;
2235         dev_name = basename(tmp_name);
2236         tdb_file = malloc(strlen(tdb_dir) + 8 + strlen(dev_name) + 7 + 1);
2237         if (!tdb_file) {
2238                 free(tmp_name);
2239                 goto errout;
2240         }
2241         sprintf(tdb_file, "%s/mke2fs-%s.e2undo", tdb_dir, dev_name);
2242         free(tmp_name);
2243
2244         if (!access(tdb_file, F_OK)) {
2245                 if (unlink(tdb_file) < 0) {
2246                         retval = errno;
2247                         goto errout;
2248                 }
2249         }
2250
2251         set_undo_io_backing_manager(*io_ptr);
2252         *io_ptr = undo_io_manager;
2253         retval = set_undo_io_backup_file(tdb_file);
2254         if (retval)
2255                 goto errout;
2256         printf(_("Overwriting existing filesystem; this can be undone "
2257                  "using the command:\n"
2258                  "    e2undo %s %s\n\n"), tdb_file, name);
2259
2260         if (free_tdb_dir)
2261                 free(tdb_dir);
2262         free(tdb_file);
2263         return 0;
2264
2265 errout:
2266         if (free_tdb_dir)
2267                 free(tdb_dir);
2268         free(tdb_file);
2269         com_err(program_name, retval, "%s",
2270                 _("while trying to setup undo file\n"));
2271         return retval;
2272 }
2273
2274 static int mke2fs_discard_device(ext2_filsys fs)
2275 {
2276         struct ext2fs_numeric_progress_struct progress;
2277         blk64_t blocks = ext2fs_blocks_count(fs->super);
2278         blk64_t count = DISCARD_STEP_MB;
2279         blk64_t cur;
2280         int retval = 0;
2281
2282         /*
2283          * Let's try if discard really works on the device, so
2284          * we do not print numeric progress resulting in failure
2285          * afterwards.
2286          */
2287         retval = io_channel_discard(fs->io, 0, fs->blocksize);
2288         if (retval)
2289                 return retval;
2290         cur = fs->blocksize;
2291
2292         count *= (1024 * 1024);
2293         count /= fs->blocksize;
2294
2295         ext2fs_numeric_progress_init(fs, &progress,
2296                                      _("Discarding device blocks: "),
2297                                      blocks);
2298         while (cur < blocks) {
2299                 ext2fs_numeric_progress_update(fs, &progress, cur);
2300
2301                 if (cur + count > blocks)
2302                         count = blocks - cur;
2303
2304                 retval = io_channel_discard(fs->io, cur, count);
2305                 if (retval)
2306                         break;
2307                 cur += count;
2308         }
2309
2310         if (retval) {
2311                 ext2fs_numeric_progress_close(fs, &progress,
2312                                       _("failed - "));
2313                 if (!quiet)
2314                         printf("%s\n",error_message(retval));
2315         } else
2316                 ext2fs_numeric_progress_close(fs, &progress,
2317                                       _("done                            \n"));
2318
2319         return retval;
2320 }
2321
2322 static void fix_cluster_bg_counts(ext2_filsys fs)
2323 {
2324         blk64_t cluster, num_clusters, tot_free;
2325         unsigned num = 0;
2326         int     grp_free, num_free, group;
2327
2328         num_clusters = EXT2FS_B2C(fs, ext2fs_blocks_count(fs->super));
2329         tot_free = num_free = group = grp_free = 0;
2330         for (cluster = EXT2FS_B2C(fs, fs->super->s_first_data_block);
2331              cluster < num_clusters; cluster++) {
2332                 if (!ext2fs_test_block_bitmap2(fs->block_map,
2333                                                EXT2FS_C2B(fs, cluster))) {
2334                         grp_free++;
2335                         tot_free++;
2336                 }
2337                 num++;
2338                 if ((num == fs->super->s_clusters_per_group) ||
2339                     (cluster == num_clusters-1)) {
2340                         ext2fs_bg_free_blocks_count_set(fs, group, grp_free);
2341                         ext2fs_group_desc_csum_set(fs, group);
2342                         num = 0;
2343                         grp_free = 0;
2344                         group++;
2345                 }
2346         }
2347         ext2fs_free_blocks_count_set(fs->super, EXT2FS_C2B(fs, tot_free));
2348 }
2349
2350 static int create_quota_inodes(ext2_filsys fs)
2351 {
2352         quota_ctx_t qctx;
2353
2354         quota_init_context(&qctx, fs, -1);
2355         quota_compute_usage(qctx);
2356         quota_write_inode(qctx, quotatype);
2357         quota_release_context(&qctx);
2358
2359         return 0;
2360 }
2361
2362 int main (int argc, char *argv[])
2363 {
2364         errcode_t       retval = 0;
2365         ext2_filsys     fs;
2366         badblocks_list  bb_list = 0;
2367         unsigned int    journal_blocks;
2368         unsigned int    i, checkinterval;
2369         int             max_mnt_count;
2370         int             val, hash_alg;
2371         int             flags;
2372         int             old_bitmaps;
2373         io_manager      io_ptr;
2374         char            tdb_string[40];
2375         char            *hash_alg_str;
2376         int             itable_zeroed = 0;
2377
2378 #ifdef ENABLE_NLS
2379         setlocale(LC_MESSAGES, "");
2380         setlocale(LC_CTYPE, "");
2381         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2382         textdomain(NLS_CAT_NAME);
2383         set_com_err_gettext(gettext);
2384 #endif
2385         PRS(argc, argv);
2386
2387 #ifdef CONFIG_TESTIO_DEBUG
2388         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
2389                 io_ptr = test_io_manager;
2390                 test_io_backing_manager = unix_io_manager;
2391         } else
2392 #endif
2393                 io_ptr = unix_io_manager;
2394
2395         if (should_do_undo(device_name)) {
2396                 retval = mke2fs_setup_tdb(device_name, &io_ptr);
2397                 if (retval)
2398                         exit(1);
2399         }
2400
2401         /*
2402          * Initialize the superblock....
2403          */
2404         flags = EXT2_FLAG_EXCLUSIVE;
2405         if (direct_io)
2406                 flags |= EXT2_FLAG_DIRECT_IO;
2407         profile_get_boolean(profile, "options", "old_bitmaps", 0, 0,
2408                             &old_bitmaps);
2409         if (!old_bitmaps)
2410                 flags |= EXT2_FLAG_64BITS;
2411         /*
2412          * By default, we print how many inode tables or block groups
2413          * or whatever we've written so far.  The quiet flag disables
2414          * this, along with a lot of other output.
2415          */
2416         if (!quiet)
2417                 flags |= EXT2_FLAG_PRINT_PROGRESS;
2418         retval = ext2fs_initialize(device_name, flags, &fs_param, io_ptr, &fs);
2419         if (retval) {
2420                 com_err(device_name, retval, "%s",
2421                         _("while setting up superblock"));
2422                 exit(1);
2423         }
2424
2425         /* Calculate journal blocks */
2426         if (!journal_device && ((journal_size) ||
2427                 (fs_param.s_feature_compat &
2428                  EXT3_FEATURE_COMPAT_HAS_JOURNAL)))
2429                 journal_blocks = figure_journal_size(journal_size, fs);
2430
2431         /* Can't undo discard ... */
2432         if (!noaction && discard && (io_ptr != undo_io_manager)) {
2433                 retval = mke2fs_discard_device(fs);
2434                 if (!retval && io_channel_discard_zeroes_data(fs->io)) {
2435                         if (verbose)
2436                                 printf("%s",
2437                                        _("Discard succeeded and will return "
2438                                          "0s - skipping inode table wipe\n"));
2439                         lazy_itable_init = 1;
2440                         itable_zeroed = 1;
2441                 }
2442         }
2443
2444         sprintf(tdb_string, "tdb_data_size=%d", fs->blocksize <= 4096 ?
2445                 32768 : fs->blocksize * 8);
2446         io_channel_set_options(fs->io, tdb_string);
2447
2448         if (fs_param.s_flags & EXT2_FLAGS_TEST_FILESYS)
2449                 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
2450
2451         if ((fs_param.s_feature_incompat &
2452              (EXT3_FEATURE_INCOMPAT_EXTENTS|EXT4_FEATURE_INCOMPAT_FLEX_BG)) ||
2453             (fs_param.s_feature_ro_compat &
2454              (EXT4_FEATURE_RO_COMPAT_HUGE_FILE|EXT4_FEATURE_RO_COMPAT_GDT_CSUM|
2455               EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
2456               EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE)))
2457                 fs->super->s_kbytes_written = 1;
2458
2459         /*
2460          * Wipe out the old on-disk superblock
2461          */
2462         if (!noaction)
2463                 zap_sector(fs, 2, 6);
2464
2465         /*
2466          * Parse or generate a UUID for the filesystem
2467          */
2468         if (fs_uuid) {
2469                 if (uuid_parse(fs_uuid, fs->super->s_uuid) !=0) {
2470                         com_err(device_name, 0, "could not parse UUID: %s\n",
2471                                 fs_uuid);
2472                         exit(1);
2473                 }
2474         } else
2475                 uuid_generate(fs->super->s_uuid);
2476
2477         /*
2478          * Initialize the directory index variables
2479          */
2480         hash_alg_str = get_string_from_profile(fs_types, "hash_alg",
2481                                                "half_md4");
2482         hash_alg = e2p_string2hash(hash_alg_str);
2483         free(hash_alg_str);
2484         fs->super->s_def_hash_version = (hash_alg >= 0) ? hash_alg :
2485                 EXT2_HASH_HALF_MD4;
2486         uuid_generate((unsigned char *) fs->super->s_hash_seed);
2487
2488         /*
2489          * Periodic checks can be enabled/disabled via config file.
2490          * Note we override the kernel include file's idea of what the default
2491          * check interval (never) should be.  It's a good idea to check at
2492          * least *occasionally*, specially since servers will never rarely get
2493          * to reboot, since Linux is so robust these days.  :-)
2494          *
2495          * 180 days (six months) seems like a good value.
2496          */
2497 #ifdef EXT2_DFL_CHECKINTERVAL
2498 #undef EXT2_DFL_CHECKINTERVAL
2499 #endif
2500 #define EXT2_DFL_CHECKINTERVAL (86400L * 180L)
2501
2502         if (get_bool_from_profile(fs_types, "enable_periodic_fsck", 0)) {
2503                 fs->super->s_checkinterval = EXT2_DFL_CHECKINTERVAL;
2504                 fs->super->s_max_mnt_count = EXT2_DFL_MAX_MNT_COUNT;
2505                 /*
2506                  * Add "jitter" to the superblock's check interval so that we
2507                  * don't check all the filesystems at the same time.  We use a
2508                  * kludgy hack of using the UUID to derive a random jitter value
2509                  */
2510                 for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++)
2511                         val += fs->super->s_uuid[i];
2512                 fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT;
2513         } else
2514                 fs->super->s_max_mnt_count = -1;
2515
2516         /*
2517          * Override the creator OS, if applicable
2518          */
2519         if (creator_os && !set_os(fs->super, creator_os)) {
2520                 com_err (program_name, 0, _("unknown os - %s"), creator_os);
2521                 exit(1);
2522         }
2523
2524         /*
2525          * For the Hurd, we will turn off filetype since it doesn't
2526          * support it.
2527          */
2528         if (fs->super->s_creator_os == EXT2_OS_HURD)
2529                 fs->super->s_feature_incompat &=
2530                         ~EXT2_FEATURE_INCOMPAT_FILETYPE;
2531
2532         /*
2533          * Set the volume label...
2534          */
2535         if (volume_label) {
2536                 memset(fs->super->s_volume_name, 0,
2537                        sizeof(fs->super->s_volume_name));
2538                 strncpy(fs->super->s_volume_name, volume_label,
2539                         sizeof(fs->super->s_volume_name));
2540         }
2541
2542         /*
2543          * Set the last mount directory
2544          */
2545         if (mount_dir) {
2546                 memset(fs->super->s_last_mounted, 0,
2547                        sizeof(fs->super->s_last_mounted));
2548                 strncpy(fs->super->s_last_mounted, mount_dir,
2549                         sizeof(fs->super->s_last_mounted));
2550         }
2551
2552         if (!quiet || noaction)
2553                 show_stats(fs);
2554
2555         if (noaction)
2556                 exit(0);
2557
2558         if (fs->super->s_feature_incompat &
2559             EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
2560                 create_journal_dev(fs);
2561                 exit(ext2fs_close(fs) ? 1 : 0);
2562         }
2563
2564         if (bad_blocks_filename)
2565                 read_bb_file(fs, &bb_list, bad_blocks_filename);
2566         if (cflag)
2567                 test_disk(fs, &bb_list);
2568
2569         handle_bad_blocks(fs, bb_list);
2570         fs->stride = fs_stride = fs->super->s_raid_stride;
2571         if (!quiet)
2572                 printf("%s", _("Allocating group tables: "));
2573         retval = ext2fs_allocate_tables(fs);
2574         if (retval) {
2575                 com_err(program_name, retval, "%s",
2576                         _("while trying to allocate filesystem tables"));
2577                 exit(1);
2578         }
2579         if (!quiet)
2580                 printf("%s", _("done                            \n"));
2581
2582         retval = ext2fs_convert_subcluster_bitmap(fs, &fs->block_map);
2583         if (retval) {
2584                 com_err(program_name, retval, "%s",
2585                         _("\n\twhile converting subcluster bitmap"));
2586                 exit(1);
2587         }
2588
2589         if (super_only) {
2590                 fs->super->s_state |= EXT2_ERROR_FS;
2591                 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY);
2592                 /*
2593                  * The command "mke2fs -S" is used to recover
2594                  * corrupted file systems, so do not mark any of the
2595                  * inodes as unused; we want e2fsck to consider all
2596                  * inodes as potentially containing recoverable data.
2597                  */
2598                 if (fs->super->s_feature_ro_compat &
2599                     EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
2600                         for (i = 0; i < fs->group_desc_count; i++)
2601                                 ext2fs_bg_itable_unused_set(fs, i, 0);
2602                 }
2603         } else {
2604                 /* rsv must be a power of two (64kB is MD RAID sb alignment) */
2605                 blk64_t rsv = 65536 / fs->blocksize;
2606                 blk64_t blocks = ext2fs_blocks_count(fs->super);
2607                 blk64_t start;
2608                 blk64_t ret_blk;
2609
2610 #ifdef ZAP_BOOTBLOCK
2611                 zap_sector(fs, 0, 2);
2612 #endif
2613
2614                 /*
2615                  * Wipe out any old MD RAID (or other) metadata at the end
2616                  * of the device.  This will also verify that the device is
2617                  * as large as we think.  Be careful with very small devices.
2618                  */
2619                 start = (blocks & ~(rsv - 1));
2620                 if (start > rsv)
2621                         start -= rsv;
2622                 if (start > 0)
2623                         retval = ext2fs_zero_blocks2(fs, start, blocks - start,
2624                                                     &ret_blk, NULL);
2625
2626                 if (retval) {
2627                         com_err(program_name, retval,
2628                                 _("while zeroing block %llu at end of filesystem"),
2629                                 ret_blk);
2630                 }
2631                 write_inode_tables(fs, lazy_itable_init, itable_zeroed);
2632                 create_root_dir(fs);
2633                 create_lost_and_found(fs);
2634                 reserve_inodes(fs);
2635                 create_bad_block_inode(fs, bb_list);
2636                 if (fs->super->s_feature_compat &
2637                     EXT2_FEATURE_COMPAT_RESIZE_INODE) {
2638                         retval = ext2fs_create_resize_inode(fs);
2639                         if (retval) {
2640                                 com_err("ext2fs_create_resize_inode", retval,
2641                                         "%s",
2642                                 _("while reserving blocks for online resize"));
2643                                 exit(1);
2644                         }
2645                 }
2646         }
2647
2648         if (journal_device) {
2649                 ext2_filsys     jfs;
2650
2651                 if (!force)
2652                         check_plausibility(journal_device);
2653                 check_mount(journal_device, force, _("journal"));
2654
2655                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
2656                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
2657                                      fs->blocksize, unix_io_manager, &jfs);
2658                 if (retval) {
2659                         com_err(program_name, retval,
2660                                 _("while trying to open journal device %s\n"),
2661                                 journal_device);
2662                         exit(1);
2663                 }
2664                 if (!quiet) {
2665                         printf(_("Adding journal to device %s: "),
2666                                journal_device);
2667                         fflush(stdout);
2668                 }
2669                 retval = ext2fs_add_journal_device(fs, jfs);
2670                 if(retval) {
2671                         com_err (program_name, retval,
2672                                  _("\n\twhile trying to add journal to device %s"),
2673                                  journal_device);
2674                         exit(1);
2675                 }
2676                 if (!quiet)
2677                         printf("%s", _("done\n"));
2678                 ext2fs_close(jfs);
2679                 free(journal_device);
2680         } else if ((journal_size) ||
2681                    (fs_param.s_feature_compat &
2682                     EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
2683                 if (super_only) {
2684                         printf("%s", _("Skipping journal creation in super-only mode\n"));
2685                         fs->super->s_journal_inum = EXT2_JOURNAL_INO;
2686                         goto no_journal;
2687                 }
2688
2689                 if (!journal_blocks) {
2690                         fs->super->s_feature_compat &=
2691                                 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
2692                         goto no_journal;
2693                 }
2694                 if (!quiet) {
2695                         printf(_("Creating journal (%u blocks): "),
2696                                journal_blocks);
2697                         fflush(stdout);
2698                 }
2699                 retval = ext2fs_add_journal_inode(fs, journal_blocks,
2700                                                   journal_flags);
2701                 if (retval) {
2702                         com_err(program_name, retval, "%s",
2703                                 _("\n\twhile trying to create journal"));
2704                         exit(1);
2705                 }
2706                 if (!quiet)
2707                         printf("%s", _("done\n"));
2708         }
2709 no_journal:
2710         if (!super_only &&
2711             fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) {
2712                 retval = ext2fs_mmp_init(fs);
2713                 if (retval) {
2714                         fprintf(stderr, "%s",
2715                                 _("\nError while enabling multiple "
2716                                   "mount protection feature."));
2717                         exit(1);
2718                 }
2719                 if (!quiet)
2720                         printf(_("Multiple mount protection is enabled "
2721                                  "with update interval %d seconds.\n"),
2722                                fs->super->s_mmp_update_interval);
2723         }
2724
2725         if (EXT2_HAS_RO_COMPAT_FEATURE(&fs_param,
2726                                        EXT4_FEATURE_RO_COMPAT_BIGALLOC))
2727                 fix_cluster_bg_counts(fs);
2728         if (EXT2_HAS_RO_COMPAT_FEATURE(&fs_param,
2729                                        EXT4_FEATURE_RO_COMPAT_QUOTA))
2730                 create_quota_inodes(fs);
2731
2732         if (!quiet)
2733                 printf("%s", _("Writing superblocks and "
2734                        "filesystem accounting information: "));
2735         checkinterval = fs->super->s_checkinterval;
2736         max_mnt_count = fs->super->s_max_mnt_count;
2737         retval = ext2fs_close(fs);
2738         if (retval) {
2739                 fprintf(stderr, "%s",
2740                         _("\nWarning, had trouble writing out superblocks."));
2741         } else if (!quiet) {
2742                 printf("%s", _("done\n\n"));
2743                 if (!getenv("MKE2FS_SKIP_CHECK_MSG"))
2744                         print_check_message(max_mnt_count, checkinterval);
2745         }
2746
2747         remove_error_table(&et_ext2_error_table);
2748         remove_error_table(&et_prof_error_table);
2749         profile_release(profile);
2750         for (i=0; fs_types[i]; i++)
2751                 free(fs_types[i]);
2752         free(fs_types);
2753         return retval;
2754 }