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 #ifdef HAVE_MNTENT_H
  46 #include <mntent.h>
  47 #endif
  48 #include <sys/ioctl.h>
  49 #include <sys/types.h>
  50 #include <sys/stat.h>
  51 #include <libgen.h>
  52 #include <limits.h>
  53 #include <blkid/blkid.h>
  54
  55 #include "ext2fs/ext2_fs.h"
  56 #include "ext2fs/ext2fsP.h"
  57 #include "et/com_err.h"
  58 #include "uuid/uuid.h"
  59 #include "e2p/e2p.h"
  60 #include "ext2fs/ext2fs.h"
  61 #include "util.h"
  62 #include "profile.h"
  63 #include "prof_err.h"
  64 #include "../version.h"
  65 #include "nls-enable.h"
  66
  67 #define STRIDE_LENGTH 8
  68
  69 #define MAX_32_NUM ((((unsigned long long) 1) << 32) - 1)
  70
  71 #ifndef __sparc__
  72 #define ZAP_BOOTBLOCK
  73 #endif
  74
  75 #define DISCARD_STEP_MB         (2048)
  76
  77 extern int isatty(int);
  78 extern FILE *fpopen(const char *cmd, const char *mode);
  79
  80 const char * program_name = "mke2fs";
  81 const char * device_name /* = NULL */;
  82
  83 /* Command line options */
  84 int     cflag;
  85 int     verbose;
  86 int     quiet;
  87 int     super_only;
  88 int     discard = 1;    /* attempt to discard device before fs creation */
  89 int     force;
  90 int     noaction;
  91 int     journal_size;
  92 int     journal_flags;
  93 int     lazy_itable_init;
  94 char    *bad_blocks_filename;
  95 __u32   fs_stride;
  96
  97 struct ext2_super_block fs_param;
  98 char *fs_uuid = NULL;
  99 char *creator_os;
 100 char *volume_label;
 101 char *mount_dir;
 102 char *journal_device;
 103 int sync_kludge;        /* Set using the MKE2FS_SYNC env. option */
 104 char **fs_types;
 105
 106 profile_t       profile;
 107
 108 int sys_page_size = 4096;
 109 int linux_version_code = 0;
 110
 111 static void usage(void)
 112 {
 113         fprintf(stderr, _("Usage: %s [-c|-l filename] [-b block-size] "
 114         "[-f fragment-size]\n\t[-i bytes-per-inode] [-I inode-size] "
 115         "[-J journal-options]\n"
 116         "\t[-G meta group size] [-N number-of-inodes]\n"
 117         "\t[-m reserved-blocks-percentage] [-o creator-os]\n"
 118         "\t[-g blocks-per-group] [-L volume-label] "
 119         "[-M last-mounted-directory]\n\t[-O feature[,...]] "
 120         "[-r fs-revision] [-E extended-option[,...]]\n"
 121         "\t[-T fs-type] [-U UUID] [-jnqvFKSV] device [blocks-count]\n"),
 122                 program_name);
 123         exit(1);
 124 }
 125
 126 static int int_log2(unsigned long long arg)
 127 {
 128         int     l = 0;
 129
 130         arg >>= 1;
 131         while (arg) {
 132                 l++;
 133                 arg >>= 1;
 134         }
 135         return l;
 136 }
 137
 138 static int int_log10(unsigned long long arg)
 139 {
 140         int     l;
 141
 142         for (l=0; arg ; l++)
 143                 arg = arg / 10;
 144         return l;
 145 }
 146
 147 static int parse_version_number(const char *s)
 148 {
 149         int     major, minor, rev;
 150         char    *endptr;
 151         const char *cp = s;
 152
 153         if (!s)
 154                 return 0;
 155         major = strtol(cp, &endptr, 10);
 156         if (cp == endptr || *endptr != '.')
 157                 return 0;
 158         cp = endptr + 1;
 159         minor = strtol(cp, &endptr, 10);
 160         if (cp == endptr || *endptr != '.')
 161                 return 0;
 162         cp = endptr + 1;
 163         rev = strtol(cp, &endptr, 10);
 164         if (cp == endptr)
 165                 return 0;
 166         return ((((major * 256) + minor) * 256) + rev);
 167 }
 168
 169 /*
 170  * Helper function for read_bb_file and test_disk
 171  */
 172 static void invalid_block(ext2_filsys fs EXT2FS_ATTR((unused)), blk_t blk)
 173 {
 174         fprintf(stderr, _("Bad block %u out of range; ignored.\n"), blk);
 175         return;
 176 }
 177
 178 /*
 179  * Reads the bad blocks list from a file
 180  */
 181 static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list,
 182                          const char *bad_blocks_file)
 183 {
 184         FILE            *f;
 185         errcode_t       retval;
 186
 187         f = fopen(bad_blocks_file, "r");
 188         if (!f) {
 189                 com_err("read_bad_blocks_file", errno,
 190                         _("while trying to open %s"), bad_blocks_file);
 191                 exit(1);
 192         }
 193         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 194         fclose (f);
 195         if (retval) {
 196                 com_err("ext2fs_read_bb_FILE", retval,
 197                         _("while reading in list of bad blocks from file"));
 198                 exit(1);
 199         }
 200 }
 201
 202 /*
 203  * Runs the badblocks program to test the disk
 204  */
 205 static void test_disk(ext2_filsys fs, badblocks_list *bb_list)
 206 {
 207         FILE            *f;
 208         errcode_t       retval;
 209         char            buf[1024];
 210
 211         sprintf(buf, "badblocks -b %d -X %s%s%s %llu", fs->blocksize,
 212                 quiet ? "" : "-s ", (cflag > 1) ? "-w " : "",
 213                 fs->device_name, ext2fs_blocks_count(fs->super)-1);
 214         if (verbose)
 215                 printf(_("Running command: %s\n"), buf);
 216         f = popen(buf, "r");
 217         if (!f) {
 218                 com_err("popen", errno,
 219                         _("while trying to run '%s'"), buf);
 220                 exit(1);
 221         }
 222         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 223         pclose(f);
 224         if (retval) {
 225                 com_err("ext2fs_read_bb_FILE", retval,
 226                         _("while processing list of bad blocks from program"));
 227                 exit(1);
 228         }
 229 }
 230
 231 static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list)
 232 {
 233         dgrp_t                  i;
 234         blk_t                   j;
 235         unsigned                must_be_good;
 236         blk_t                   blk;
 237         badblocks_iterate       bb_iter;
 238         errcode_t               retval;
 239         blk_t                   group_block;
 240         int                     group;
 241         int                     group_bad;
 242
 243         if (!bb_list)
 244                 return;
 245
 246         /*
 247          * The primary superblock and group descriptors *must* be
 248          * good; if not, abort.
 249          */
 250         must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks;
 251         for (i = fs->super->s_first_data_block; i <= must_be_good; i++) {
 252                 if (ext2fs_badblocks_list_test(bb_list, i)) {
 253                         fprintf(stderr, _("Block %d in primary "
 254                                 "superblock/group descriptor area bad.\n"), i);
 255                         fprintf(stderr, _("Blocks %u through %u must be good "
 256                                 "in order to build a filesystem.\n"),
 257                                 fs->super->s_first_data_block, must_be_good);
 258                         fputs(_("Aborting....\n"), stderr);
 259                         exit(1);
 260                 }
 261         }
 262
 263         /*
 264          * See if any of the bad blocks are showing up in the backup
 265          * superblocks and/or group descriptors.  If so, issue a
 266          * warning and adjust the block counts appropriately.
 267          */
 268         group_block = fs->super->s_first_data_block +
 269                 fs->super->s_blocks_per_group;
 270
 271         for (i = 1; i < fs->group_desc_count; i++) {
 272                 group_bad = 0;
 273                 for (j=0; j < fs->desc_blocks+1; j++) {
 274                         if (ext2fs_badblocks_list_test(bb_list,
 275                                                        group_block + j)) {
 276                                 if (!group_bad)
 277                                         fprintf(stderr,
 278 _("Warning: the backup superblock/group descriptors at block %u contain\n"
 279 "       bad blocks.\n\n"),
 280                                                 group_block);
 281                                 group_bad++;
 282                                 group = ext2fs_group_of_blk2(fs, group_block+j);
 283                                 ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
 284                                 ext2fs_group_desc_csum_set(fs, group);
 285                                 ext2fs_free_blocks_count_add(fs->super, 1);
 286                         }
 287                 }
 288                 group_block += fs->super->s_blocks_per_group;
 289         }
 290
 291         /*
 292          * Mark all the bad blocks as used...
 293          */
 294         retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
 295         if (retval) {
 296                 com_err("ext2fs_badblocks_list_iterate_begin", retval,
 297                         _("while marking bad blocks as used"));
 298                 exit(1);
 299         }
 300         while (ext2fs_badblocks_list_iterate(bb_iter, &blk))
 301                 ext2fs_mark_block_bitmap2(fs->block_map, EXT2FS_B2C(fs, blk));
 302         ext2fs_badblocks_list_iterate_end(bb_iter);
 303 }
 304
 305 static void write_inode_tables(ext2_filsys fs, int lazy_flag, int itable_zeroed)
 306 {
 307         errcode_t       retval;
 308         blk64_t         blk;
 309         dgrp_t          i;
 310         int             num;
 311         struct ext2fs_numeric_progress_struct progress;
 312
 313         ext2fs_numeric_progress_init(fs, &progress,
 314                                      _("Writing inode tables: "),
 315                                      fs->group_desc_count);
 316
 317         for (i = 0; i < fs->group_desc_count; i++) {
 318                 ext2fs_numeric_progress_update(fs, &progress, i);
 319
 320                 blk = ext2fs_inode_table_loc(fs, i);
 321                 num = fs->inode_blocks_per_group;
 322
 323                 if (lazy_flag)
 324                         num = ext2fs_div_ceil((fs->super->s_inodes_per_group -
 325                                                ext2fs_bg_itable_unused(fs, i)) *
 326                                               EXT2_INODE_SIZE(fs->super),
 327                                               EXT2_BLOCK_SIZE(fs->super));
 328                 if (!lazy_flag || itable_zeroed) {
 329                         /* The kernel doesn't need to zero the itable blocks */
 330                         ext2fs_bg_flags_set(fs, i, EXT2_BG_INODE_ZEROED);
 331                         ext2fs_group_desc_csum_set(fs, i);
 332                 }
 333                 retval = ext2fs_zero_blocks2(fs, blk, num, &blk, &num);
 334                 if (retval) {
 335                         fprintf(stderr, _("\nCould not write %d "
 336                                   "blocks in inode table starting at %llu: %s\n"),
 337                                 num, blk, error_message(retval));
 338                         exit(1);
 339                 }
 340                 if (sync_kludge) {
 341                         if (sync_kludge == 1)
 342                                 sync();
 343                         else if ((i % sync_kludge) == 0)
 344                                 sync();
 345                 }
 346         }
 347         ext2fs_zero_blocks2(0, 0, 0, 0, 0);
 348         ext2fs_numeric_progress_close(fs, &progress,
 349                                       _("done                            \n"));
 350 }
 351
 352 static void create_root_dir(ext2_filsys fs)
 353 {
 354         errcode_t               retval;
 355         struct ext2_inode       inode;
 356         __u32                   uid, gid;
 357
 358         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0);
 359         if (retval) {
 360                 com_err("ext2fs_mkdir", retval, _("while creating root dir"));
 361                 exit(1);
 362         }
 363         if (geteuid()) {
 364                 retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode);
 365                 if (retval) {
 366                         com_err("ext2fs_read_inode", retval,
 367                                 _("while reading root inode"));
 368                         exit(1);
 369                 }
 370                 uid = getuid();
 371                 inode.i_uid = uid;
 372                 ext2fs_set_i_uid_high(inode, uid >> 16);
 373                 if (uid) {
 374                         gid = getgid();
 375                         inode.i_gid = gid;
 376                         ext2fs_set_i_gid_high(inode, gid >> 16);
 377                 }
 378                 retval = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode);
 379                 if (retval) {
 380                         com_err("ext2fs_write_inode", retval,
 381                                 _("while setting root inode ownership"));
 382                         exit(1);
 383                 }
 384         }
 385 }
 386
 387 static void create_lost_and_found(ext2_filsys fs)
 388 {
 389         unsigned int            lpf_size = 0;
 390         errcode_t               retval;
 391         ext2_ino_t              ino;
 392         const char              *name = "lost+found";
 393         int                     i;
 394
 395         fs->umask = 077;
 396         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name);
 397         if (retval) {
 398                 com_err("ext2fs_mkdir", retval,
 399                         _("while creating /lost+found"));
 400                 exit(1);
 401         }
 402
 403         retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
 404         if (retval) {
 405                 com_err("ext2_lookup", retval,
 406                         _("while looking up /lost+found"));
 407                 exit(1);
 408         }
 409
 410         for (i=1; i < EXT2_NDIR_BLOCKS; i++) {
 411                 /* Ensure that lost+found is at least 2 blocks, so we always
 412                  * test large empty blocks for big-block filesystems.  */
 413                 if ((lpf_size += fs->blocksize) >= 16*1024 &&
 414                     lpf_size >= 2 * fs->blocksize)
 415                         break;
 416                 retval = ext2fs_expand_dir(fs, ino);
 417                 if (retval) {
 418                         com_err("ext2fs_expand_dir", retval,
 419                                 _("while expanding /lost+found"));
 420                         exit(1);
 421                 }
 422         }
 423 }
 424
 425 static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list)
 426 {
 427         errcode_t       retval;
 428
 429         ext2fs_mark_inode_bitmap2(fs->inode_map, EXT2_BAD_INO);
 430         ext2fs_inode_alloc_stats2(fs, EXT2_BAD_INO, +1, 0);
 431         retval = ext2fs_update_bb_inode(fs, bb_list);
 432         if (retval) {
 433                 com_err("ext2fs_update_bb_inode", retval,
 434                         _("while setting bad block inode"));
 435                 exit(1);
 436         }
 437
 438 }
 439
 440 static void reserve_inodes(ext2_filsys fs)
 441 {
 442         ext2_ino_t      i;
 443
 444         for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++)
 445                 ext2fs_inode_alloc_stats2(fs, i, +1, 0);
 446         ext2fs_mark_ib_dirty(fs);
 447 }
 448
 449 #define BSD_DISKMAGIC   (0x82564557UL)  /* The disk magic number */
 450 #define BSD_MAGICDISK   (0x57455682UL)  /* The disk magic number reversed */
 451 #define BSD_LABEL_OFFSET        64
 452
 453 static void zap_sector(ext2_filsys fs, int sect, int nsect)
 454 {
 455         char *buf;
 456         int retval;
 457         unsigned int *magic;
 458
 459         buf = malloc(512*nsect);
 460         if (!buf) {
 461                 printf(_("Out of memory erasing sectors %d-%d\n"),
 462                        sect, sect + nsect - 1);
 463                 exit(1);
 464         }
 465
 466         if (sect == 0) {
 467                 /* Check for a BSD disklabel, and don't erase it if so */
 468                 retval = io_channel_read_blk64(fs->io, 0, -512, buf);
 469                 if (retval)
 470                         fprintf(stderr,
 471                                 _("Warning: could not read block 0: %s\n"),
 472                                 error_message(retval));
 473                 else {
 474                         magic = (unsigned int *) (buf + BSD_LABEL_OFFSET);
 475                         if ((*magic == BSD_DISKMAGIC) ||
 476                             (*magic == BSD_MAGICDISK))
 477                                 return;
 478                 }
 479         }
 480
 481         memset(buf, 0, 512*nsect);
 482         io_channel_set_blksize(fs->io, 512);
 483         retval = io_channel_write_blk64(fs->io, sect, -512*nsect, buf);
 484         io_channel_set_blksize(fs->io, fs->blocksize);
 485         free(buf);
 486         if (retval)
 487                 fprintf(stderr, _("Warning: could not erase sector %d: %s\n"),
 488                         sect, error_message(retval));
 489 }
 490
 491 static void create_journal_dev(ext2_filsys fs)
 492 {
 493         struct ext2fs_numeric_progress_struct progress;
 494         errcode_t               retval;
 495         char                    *buf;
 496         blk64_t                 blk, err_blk;
 497         int                     c, count, err_count;
 498
 499         retval = ext2fs_create_journal_superblock(fs,
 500                                   ext2fs_blocks_count(fs->super), 0, &buf);
 501         if (retval) {
 502                 com_err("create_journal_dev", retval,
 503                         _("while initializing journal superblock"));
 504                 exit(1);
 505         }
 506
 507         if (journal_flags & EXT2_MKJOURNAL_LAZYINIT)
 508                 goto write_superblock;
 509
 510         ext2fs_numeric_progress_init(fs, &progress,
 511                                      _("Zeroing journal device: "),
 512                                      ext2fs_blocks_count(fs->super));
 513         blk = 0;
 514         count = ext2fs_blocks_count(fs->super);
 515         while (count > 0) {
 516                 if (count > 1024)
 517                         c = 1024;
 518                 else
 519                         c = count;
 520                 retval = ext2fs_zero_blocks2(fs, blk, c, &err_blk, &err_count);
 521                 if (retval) {
 522                         com_err("create_journal_dev", retval,
 523                                 _("while zeroing journal device "
 524                                   "(block %llu, count %d)"),
 525                                 err_blk, err_count);
 526                         exit(1);
 527                 }
 528                 blk += c;
 529                 count -= c;
 530                 ext2fs_numeric_progress_update(fs, &progress, blk);
 531         }
 532         ext2fs_zero_blocks2(0, 0, 0, 0, 0);
 533
 534         ext2fs_numeric_progress_close(fs, &progress, NULL);
 535 write_superblock:
 536         retval = io_channel_write_blk64(fs->io,
 537                                         fs->super->s_first_data_block+1,
 538                                         1, buf);
 539         if (retval) {
 540                 com_err("create_journal_dev", retval,
 541                         _("while writing journal superblock"));
 542                 exit(1);
 543         }
 544 }
 545
 546 static void show_stats(ext2_filsys fs)
 547 {
 548         struct ext2_super_block *s = fs->super;
 549         char                    buf[80];
 550         char                    *os;
 551         blk64_t                 group_block;
 552         dgrp_t                  i;
 553         int                     need, col_left;
 554
 555         if (ext2fs_blocks_count(&fs_param) != ext2fs_blocks_count(s))
 556                 fprintf(stderr, _("warning: %llu blocks unused.\n\n"),
 557                        ext2fs_blocks_count(&fs_param) - ext2fs_blocks_count(s));
 558
 559         memset(buf, 0, sizeof(buf));
 560         strncpy(buf, s->s_volume_name, sizeof(s->s_volume_name));
 561         printf(_("Filesystem label=%s\n"), buf);
 562         os = e2p_os2string(fs->super->s_creator_os);
 563         if (os)
 564                 printf(_("OS type: %s\n"), os);
 565         free(os);
 566         printf(_("Block size=%u (log=%u)\n"), fs->blocksize,
 567                 s->s_log_block_size);
 568         if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
 569                                        EXT4_FEATURE_RO_COMPAT_BIGALLOC))
 570                 printf(_("Cluster size=%u (log=%u)\n"),
 571                        fs->blocksize << fs->cluster_ratio_bits,
 572                        s->s_log_cluster_size);
 573         else
 574                 printf(_("Fragment size=%u (log=%u)\n"), EXT2_CLUSTER_SIZE(s),
 575                        s->s_log_cluster_size);
 576         printf(_("Stride=%u blocks, Stripe width=%u blocks\n"),
 577                s->s_raid_stride, s->s_raid_stripe_width);
 578         printf(_("%u inodes, %llu blocks\n"), s->s_inodes_count,
 579                ext2fs_blocks_count(s));
 580         printf(_("%llu blocks (%2.2f%%) reserved for the super user\n"),
 581                 ext2fs_r_blocks_count(s),
 582                100.0 *  ext2fs_r_blocks_count(s) / ext2fs_blocks_count(s));
 583         printf(_("First data block=%u\n"), s->s_first_data_block);
 584         if (s->s_reserved_gdt_blocks)
 585                 printf(_("Maximum filesystem blocks=%lu\n"),
 586                        (s->s_reserved_gdt_blocks + fs->desc_blocks) *
 587                        EXT2_DESC_PER_BLOCK(s) * s->s_blocks_per_group);
 588         if (fs->group_desc_count > 1)
 589                 printf(_("%u block groups\n"), fs->group_desc_count);
 590         else
 591                 printf(_("%u block group\n"), fs->group_desc_count);
 592         if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
 593                                        EXT4_FEATURE_RO_COMPAT_BIGALLOC))
 594                 printf(_("%u blocks per group, %u clusters per group\n"),
 595                        s->s_blocks_per_group, s->s_clusters_per_group);
 596         else
 597                 printf(_("%u blocks per group, %u fragments per group\n"),
 598                        s->s_blocks_per_group, s->s_clusters_per_group);
 599         printf(_("%u inodes per group\n"), s->s_inodes_per_group);
 600
 601         if (fs->group_desc_count == 1) {
 602                 printf("\n");
 603                 return;
 604         }
 605
 606         printf(_("Superblock backups stored on blocks: "));
 607         group_block = s->s_first_data_block;
 608         col_left = 0;
 609         for (i = 1; i < fs->group_desc_count; i++) {
 610                 group_block += s->s_blocks_per_group;
 611                 if (!ext2fs_bg_has_super(fs, i))
 612                         continue;
 613                 if (i != 1)
 614                         printf(", ");
 615                 need = int_log10(group_block) + 2;
 616                 if (need > col_left) {
 617                         printf("\n\t");
 618                         col_left = 72;
 619                 }
 620                 col_left -= need;
 621                 printf("%llu", group_block);
 622         }
 623         printf("\n\n");
 624 }
 625
 626 /*
 627  * Set the S_CREATOR_OS field.  Return true if OS is known,
 628  * otherwise, 0.
 629  */
 630 static int set_os(struct ext2_super_block *sb, char *os)
 631 {
 632         if (isdigit (*os))
 633                 sb->s_creator_os = atoi (os);
 634         else if (strcasecmp(os, "linux") == 0)
 635                 sb->s_creator_os = EXT2_OS_LINUX;
 636         else if (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0)
 637                 sb->s_creator_os = EXT2_OS_HURD;
 638         else if (strcasecmp(os, "freebsd") == 0)
 639                 sb->s_creator_os = EXT2_OS_FREEBSD;
 640         else if (strcasecmp(os, "lites") == 0)
 641                 sb->s_creator_os = EXT2_OS_LITES;
 642         else
 643                 return 0;
 644         return 1;
 645 }
 646
 647 #define PATH_SET "PATH=/sbin"
 648
 649 static void parse_extended_opts(struct ext2_super_block *param,
 650                                 const char *opts)
 651 {
 652         char    *buf, *token, *next, *p, *arg, *badopt = 0;
 653         int     len;
 654         int     r_usage = 0;
 655
 656         len = strlen(opts);
 657         buf = malloc(len+1);
 658         if (!buf) {
 659                 fprintf(stderr,
 660                         _("Couldn't allocate memory to parse options!\n"));
 661                 exit(1);
 662         }
 663         strcpy(buf, opts);
 664         for (token = buf; token && *token; token = next) {
 665                 p = strchr(token, ',');
 666                 next = 0;
 667                 if (p) {
 668                         *p = 0;
 669                         next = p+1;
 670                 }
 671                 arg = strchr(token, '=');
 672                 if (arg) {
 673                         *arg = 0;
 674                         arg++;
 675                 }
 676                 if (strcmp(token, "stride") == 0) {
 677                         if (!arg) {
 678                                 r_usage++;
 679                                 badopt = token;
 680                                 continue;
 681                         }
 682                         param->s_raid_stride = strtoul(arg, &p, 0);
 683                         if (*p) {
 684                                 fprintf(stderr,
 685                                         _("Invalid stride parameter: %s\n"),
 686                                         arg);
 687                                 r_usage++;
 688                                 continue;
 689                         }
 690                 } else if (strcmp(token, "stripe-width") == 0 ||
 691                            strcmp(token, "stripe_width") == 0) {
 692                         if (!arg) {
 693                                 r_usage++;
 694                                 badopt = token;
 695                                 continue;
 696                         }
 697                         param->s_raid_stripe_width = strtoul(arg, &p, 0);
 698                         if (*p) {
 699                                 fprintf(stderr,
 700                                         _("Invalid stripe-width parameter: %s\n"),
 701                                         arg);
 702                                 r_usage++;
 703                                 continue;
 704                         }
 705                 } else if (!strcmp(token, "resize")) {
 706                         blk64_t resize;
 707                         unsigned long bpg, rsv_groups;
 708                         unsigned long group_desc_count, desc_blocks;
 709                         unsigned int gdpb, blocksize;
 710                         int rsv_gdb;
 711
 712                         if (!arg) {
 713                                 r_usage++;
 714                                 badopt = token;
 715                                 continue;
 716                         }
 717
 718                         resize = parse_num_blocks2(arg,
 719                                                    param->s_log_block_size);
 720
 721                         if (resize == 0) {
 722                                 fprintf(stderr,
 723                                         _("Invalid resize parameter: %s\n"),
 724                                         arg);
 725                                 r_usage++;
 726                                 continue;
 727                         }
 728                         if (resize <= ext2fs_blocks_count(param)) {
 729                                 fprintf(stderr,
 730                                         _("The resize maximum must be greater "
 731                                           "than the filesystem size.\n"));
 732                                 r_usage++;
 733                                 continue;
 734                         }
 735
 736                         blocksize = EXT2_BLOCK_SIZE(param);
 737                         bpg = param->s_blocks_per_group;
 738                         if (!bpg)
 739                                 bpg = blocksize * 8;
 740                         gdpb = EXT2_DESC_PER_BLOCK(param);
 741                         group_desc_count = (__u32) ext2fs_div64_ceil(
 742                                 ext2fs_blocks_count(param), bpg);
 743                         desc_blocks = (group_desc_count +
 744                                        gdpb - 1) / gdpb;
 745                         rsv_groups = ext2fs_div64_ceil(resize, bpg);
 746                         rsv_gdb = ext2fs_div_ceil(rsv_groups, gdpb) -
 747                                 desc_blocks;
 748                         if (rsv_gdb > (int) EXT2_ADDR_PER_BLOCK(param))
 749                                 rsv_gdb = EXT2_ADDR_PER_BLOCK(param);
 750
 751                         if (rsv_gdb > 0) {
 752                                 if (param->s_rev_level == EXT2_GOOD_OLD_REV) {
 753                                         fprintf(stderr,
 754         _("On-line resizing not supported with revision 0 filesystems\n"));
 755                                         free(buf);
 756                                         exit(1);
 757                                 }
 758                                 param->s_feature_compat |=
 759                                         EXT2_FEATURE_COMPAT_RESIZE_INODE;
 760
 761                                 param->s_reserved_gdt_blocks = rsv_gdb;
 762                         }
 763                 } else if (!strcmp(token, "test_fs")) {
 764                         param->s_flags |= EXT2_FLAGS_TEST_FILESYS;
 765                 } else if (!strcmp(token, "lazy_itable_init")) {
 766                         if (arg)
 767                                 lazy_itable_init = strtoul(arg, &p, 0);
 768                         else
 769                                 lazy_itable_init = 1;
 770                 } else if (!strcmp(token, "lazy_journal_init")) {
 771                         if (arg)
 772                                 journal_flags |= strtoul(arg, &p, 0) ?
 773                                                 EXT2_MKJOURNAL_LAZYINIT : 0;
 774                         else
 775                                 journal_flags |= EXT2_MKJOURNAL_LAZYINIT;
 776                 } else if (!strcmp(token, "discard")) {
 777                         discard = 1;
 778                 } else if (!strcmp(token, "nodiscard")) {
 779                         discard = 0;
 780                 } else {
 781                         r_usage++;
 782                         badopt = token;
 783                 }
 784         }
 785         if (r_usage) {
 786                 fprintf(stderr, _("\nBad option(s) specified: %s\n\n"
 787                         "Extended options are separated by commas, "
 788                         "and may take an argument which\n"
 789                         "\tis set off by an equals ('=') sign.\n\n"
 790                         "Valid extended options are:\n"
 791                         "\tstride=<RAID per-disk data chunk in blocks>\n"
 792                         "\tstripe-width=<RAID stride * data disks in blocks>\n"
 793                         "\tresize=<resize maximum size in blocks>\n"
 794                         "\tlazy_itable_init=<0 to disable, 1 to enable>\n"
 795                         "\tlazy_journal_init=<0 to disable, 1 to enable>\n"
 796                         "\ttest_fs\n"
 797                         "\tdiscard\n"
 798                         "\tnodiscard\n\n"),
 799                         badopt ? badopt : "");
 800                 free(buf);
 801                 exit(1);
 802         }
 803         if (param->s_raid_stride &&
 804             (param->s_raid_stripe_width % param->s_raid_stride) != 0)
 805                 fprintf(stderr, _("\nWarning: RAID stripe-width %u not an even "
 806                                   "multiple of stride %u.\n\n"),
 807                         param->s_raid_stripe_width, param->s_raid_stride);
 808
 809         free(buf);
 810 }
 811
 812 static __u32 ok_features[3] = {
 813         /* Compat */
 814         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 815                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 816                 EXT2_FEATURE_COMPAT_DIR_INDEX |
 817                 EXT2_FEATURE_COMPAT_EXT_ATTR,
 818         /* Incompat */
 819         EXT2_FEATURE_INCOMPAT_FILETYPE|
 820                 EXT3_FEATURE_INCOMPAT_EXTENTS|
 821                 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|
 822                 EXT2_FEATURE_INCOMPAT_META_BG|
 823                 EXT4_FEATURE_INCOMPAT_FLEX_BG|
 824                 EXT4_FEATURE_INCOMPAT_64BIT,
 825         /* R/O compat */
 826         EXT2_FEATURE_RO_COMPAT_LARGE_FILE|
 827                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 828                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 829                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 830                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|
 831                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|
 832                 EXT4_FEATURE_RO_COMPAT_BIGALLOC
 833 };
 834
 835
 836 static void syntax_err_report(const char *filename, long err, int line_num)
 837 {
 838         fprintf(stderr,
 839                 _("Syntax error in mke2fs config file (%s, line #%d)\n\t%s\n"),
 840                 filename, line_num, error_message(err));
 841         exit(1);
 842 }
 843
 844 static const char *config_fn[] = { ROOT_SYSCONFDIR "/mke2fs.conf", 0 };
 845
 846 static void edit_feature(const char *str, __u32 *compat_array)
 847 {
 848         if (!str)
 849                 return;
 850
 851         if (e2p_edit_feature(str, compat_array, ok_features)) {
 852                 fprintf(stderr, _("Invalid filesystem option set: %s\n"),
 853                         str);
 854                 exit(1);
 855         }
 856 }
 857
 858 static void edit_mntopts(const char *str, __u32 *mntopts)
 859 {
 860         if (!str)
 861                 return;
 862
 863         if (e2p_edit_mntopts(str, mntopts, ~0)) {
 864                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 865                         str);
 866                 exit(1);
 867         }
 868 }
 869
 870 struct str_list {
 871         char **list;
 872         int num;
 873         int max;
 874 };
 875
 876 static errcode_t init_list(struct str_list *sl)
 877 {
 878         sl->num = 0;
 879         sl->max = 0;
 880         sl->list = malloc((sl->max+1) * sizeof(char *));
 881         if (!sl->list)
 882                 return ENOMEM;
 883         sl->list[0] = 0;
 884         return 0;
 885 }
 886
 887 static errcode_t push_string(struct str_list *sl, const char *str)
 888 {
 889         char **new_list;
 890
 891         if (sl->num >= sl->max) {
 892                 sl->max += 2;
 893                 new_list = realloc(sl->list, (sl->max+1) * sizeof(char *));
 894                 if (!new_list)
 895                         return ENOMEM;
 896                 sl->list = new_list;
 897         }
 898         sl->list[sl->num] = malloc(strlen(str)+1);
 899         if (sl->list[sl->num] == 0)
 900                 return ENOMEM;
 901         strcpy(sl->list[sl->num], str);
 902         sl->num++;
 903         sl->list[sl->num] = 0;
 904         return 0;
 905 }
 906
 907 static void print_str_list(char **list)
 908 {
 909         char **cpp;
 910
 911         for (cpp = list; *cpp; cpp++) {
 912                 printf("'%s'", *cpp);
 913                 if (cpp[1])
 914                         fputs(", ", stdout);
 915         }
 916         fputc('\n', stdout);
 917 }
 918
 919 /*
 920  * Return TRUE if the profile has the given subsection
 921  */
 922 static int profile_has_subsection(profile_t profile, const char *section,
 923                                   const char *subsection)
 924 {
 925         void                    *state;
 926         const char              *names[4];
 927         char                    *name;
 928         int                     ret = 0;
 929
 930         names[0] = section;
 931         names[1] = subsection;
 932         names[2] = 0;
 933
 934         if (profile_iterator_create(profile, names,
 935                                     PROFILE_ITER_LIST_SECTION |
 936                                     PROFILE_ITER_RELATIONS_ONLY, &state))
 937                 return 0;
 938
 939         if ((profile_iterator(&state, &name, 0) == 0) && name) {
 940                 free(name);
 941                 ret = 1;
 942         }
 943
 944         profile_iterator_free(&state);
 945         return ret;
 946 }
 947
 948 static char **parse_fs_type(const char *fs_type,
 949                             const char *usage_types,
 950                             struct ext2_super_block *fs_param,
 951                             blk64_t fs_blocks_count,
 952                             char *progname)
 953 {
 954         const char      *ext_type = 0;
 955         char            *parse_str;
 956         char            *profile_type = 0;
 957         char            *cp, *t;
 958         const char      *size_type;
 959         struct str_list list;
 960         unsigned long long meg;
 961         int             is_hurd = 0;
 962
 963         if (init_list(&list))
 964                 return 0;
 965
 966         if (creator_os && (!strcasecmp(creator_os, "GNU") ||
 967                            !strcasecmp(creator_os, "hurd")))
 968                 is_hurd = 1;
 969
 970         if (fs_type)
 971                 ext_type = fs_type;
 972         else if (is_hurd)
 973                 ext_type = "ext2";
 974         else if (!strcmp(program_name, "mke3fs"))
 975                 ext_type = "ext3";
 976         else if (progname) {
 977                 ext_type = strrchr(progname, '/');
 978                 if (ext_type)
 979                         ext_type++;
 980                 else
 981                         ext_type = progname;
 982
 983                 if (!strncmp(ext_type, "mkfs.", 5)) {
 984                         ext_type += 5;
 985                         if (ext_type[0] == 0)
 986                                 ext_type = 0;
 987                 } else
 988                         ext_type = 0;
 989         }
 990
 991         if (!ext_type) {
 992                 profile_get_string(profile, "defaults", "fs_type", 0,
 993                                    "ext2", &profile_type);
 994                 ext_type = profile_type;
 995                 if (!strcmp(ext_type, "ext2") && (journal_size != 0))
 996                         ext_type = "ext3";
 997         }
 998
 999
1000         if (!profile_has_subsection(profile, "fs_types", ext_type) &&
1001             strcmp(ext_type, "ext2")) {
1002                 printf(_("\nYour mke2fs.conf file does not define the "
1003                          "%s filesystem type.\n"), ext_type);
1004                 if (!strcmp(ext_type, "ext3") || !strcmp(ext_type, "ext4") ||
1005                     !strcmp(ext_type, "ext4dev")) {
1006                         printf(_("You probably need to install an updated "
1007                                  "mke2fs.conf file.\n\n"));
1008                 }
1009                 if (!force) {
1010                         printf(_("Aborting...\n"));
1011                         exit(1);
1012                 }
1013         }
1014
1015         meg = (1024 * 1024) / EXT2_BLOCK_SIZE(fs_param);
1016         if (fs_blocks_count < 3 * meg)
1017                 size_type = "floppy";
1018         else if (fs_blocks_count < 512 * meg)
1019                 size_type = "small";
1020         else if (fs_blocks_count < 4 * 1024 * 1024 * meg)
1021                 size_type = "default";
1022         else if (fs_blocks_count < 16 * 1024 * 1024 * meg)
1023                 size_type = "big";
1024         else
1025                 size_type = "huge";
1026
1027         if (!usage_types)
1028                 usage_types = size_type;
1029
1030         parse_str = malloc(usage_types ? strlen(usage_types)+1 : 1);
1031         if (!parse_str) {
1032                 free(list.list);
1033                 return 0;
1034         }
1035         if (usage_types)
1036                 strcpy(parse_str, usage_types);
1037         else
1038                 *parse_str = '\0';
1039
1040         if (ext_type)
1041                 push_string(&list, ext_type);
1042         cp = parse_str;
1043         while (1) {
1044                 t = strchr(cp, ',');
1045                 if (t)
1046                         *t = '\0';
1047
1048                 if (*cp) {
1049                         if (profile_has_subsection(profile, "fs_types", cp))
1050                                 push_string(&list, cp);
1051                         else if (strcmp(cp, "default") != 0)
1052                                 fprintf(stderr,
1053                                         _("\nWarning: the fs_type %s is not "
1054                                           "defined in mke2fs.conf\n\n"),
1055                                         cp);
1056                 }
1057                 if (t)
1058                         cp = t+1;
1059                 else {
1060                         cp = "";
1061                         break;
1062                 }
1063         }
1064         free(parse_str);
1065         free(profile_type);
1066         if (is_hurd)
1067                 push_string(&list, "hurd");
1068         return (list.list);
1069 }
1070
1071 static char *get_string_from_profile(char **fs_types, const char *opt,
1072                                      const char *def_val)
1073 {
1074         char *ret = 0;
1075         int i;
1076
1077         for (i=0; fs_types[i]; i++);
1078         for (i-=1; i >=0 ; i--) {
1079                 profile_get_string(profile, "fs_types", fs_types[i],
1080                                    opt, 0, &ret);
1081                 if (ret)
1082                         return ret;
1083         }
1084         profile_get_string(profile, "defaults", opt, 0, def_val, &ret);
1085         return (ret);
1086 }
1087
1088 static int get_int_from_profile(char **fs_types, const char *opt, int def_val)
1089 {
1090         int ret;
1091         char **cpp;
1092
1093         profile_get_integer(profile, "defaults", opt, 0, def_val, &ret);
1094         for (cpp = fs_types; *cpp; cpp++)
1095                 profile_get_integer(profile, "fs_types", *cpp, opt, ret, &ret);
1096         return ret;
1097 }
1098
1099 static double get_double_from_profile(char **fs_types, const char *opt,
1100                                       double def_val)
1101 {
1102         double ret;
1103         char **cpp;
1104
1105         profile_get_double(profile, "defaults", opt, 0, def_val, &ret);
1106         for (cpp = fs_types; *cpp; cpp++)
1107                 profile_get_double(profile, "fs_types", *cpp, opt, ret, &ret);
1108         return ret;
1109 }
1110
1111 static int get_bool_from_profile(char **fs_types, const char *opt, int def_val)
1112 {
1113         int ret;
1114         char **cpp;
1115
1116         profile_get_boolean(profile, "defaults", opt, 0, def_val, &ret);
1117         for (cpp = fs_types; *cpp; cpp++)
1118                 profile_get_boolean(profile, "fs_types", *cpp, opt, ret, &ret);
1119         return ret;
1120 }
1121
1122 extern const char *mke2fs_default_profile;
1123 static const char *default_files[] = { "<default>", 0 };
1124
1125 #ifdef HAVE_BLKID_PROBE_GET_TOPOLOGY
1126 /*
1127  * Sets the geometry of a device (stripe/stride), and returns the
1128  * device's alignment offset, if any, or a negative error.
1129  */
1130 static int get_device_geometry(const char *file,
1131                                struct ext2_super_block *fs_param,
1132                                int psector_size)
1133 {
1134         int rc = -1;
1135         int blocksize;
1136         blkid_probe pr;
1137         blkid_topology tp;
1138         unsigned long min_io;
1139         unsigned long opt_io;
1140         struct stat statbuf;
1141
1142         /* Nothing to do for a regular file */
1143         if (!stat(file, &statbuf) && S_ISREG(statbuf.st_mode))
1144                 return 0;
1145
1146         pr = blkid_new_probe_from_filename(file);
1147         if (!pr)
1148                 goto out;
1149
1150         tp = blkid_probe_get_topology(pr);
1151         if (!tp)
1152                 goto out;
1153
1154         min_io = blkid_topology_get_minimum_io_size(tp);
1155         opt_io = blkid_topology_get_optimal_io_size(tp);
1156         blocksize = EXT2_BLOCK_SIZE(fs_param);
1157         if ((min_io == 0) && (psector_size > blocksize))
1158                 min_io = psector_size;
1159         if ((opt_io == 0) && min_io)
1160                 opt_io = min_io;
1161         if ((opt_io == 0) && (psector_size > blocksize))
1162                 opt_io = psector_size;
1163
1164         /* setting stripe/stride to blocksize is pointless */
1165         if (min_io > blocksize)
1166                 fs_param->s_raid_stride = min_io / blocksize;
1167         if (opt_io > blocksize)
1168                 fs_param->s_raid_stripe_width = opt_io / blocksize;
1169
1170         rc = blkid_topology_get_alignment_offset(tp);
1171 out:
1172         blkid_free_probe(pr);
1173         return rc;
1174 }
1175 #endif
1176
1177 static void PRS(int argc, char *argv[])
1178 {
1179         int             b, c;
1180         int             cluster_size = 0;
1181         char            *tmp, **cpp;
1182         int             blocksize = 0;
1183         int             inode_ratio = 0;
1184         int             inode_size = 0;
1185         unsigned long   flex_bg_size = 0;
1186         double          reserved_ratio = -1.0;
1187         int             lsector_size = 0, psector_size = 0;
1188         int             show_version_only = 0;
1189         unsigned long long num_inodes = 0; /* unsigned long long to catch too-large input */
1190         errcode_t       retval;
1191         char *          oldpath = getenv("PATH");
1192         char *          extended_opts = 0;
1193         char *          fs_type = 0;
1194         char *          usage_types = 0;
1195         blk64_t         dev_size;
1196         blk64_t         fs_blocks_count = 0;
1197 #ifdef __linux__
1198         struct          utsname ut;
1199 #endif
1200         long            sysval;
1201         int             s_opt = -1, r_opt = -1;
1202         char            *fs_features = 0;
1203         int             use_bsize;
1204         char            *newpath;
1205         int             pathlen = sizeof(PATH_SET) + 1;
1206
1207         if (oldpath)
1208                 pathlen += strlen(oldpath);
1209         newpath = malloc(pathlen);
1210         if (!newpath) {
1211                 fprintf(stderr, _("Couldn't allocate memory for new PATH.\n"));
1212                 exit(1);
1213         }
1214         strcpy(newpath, PATH_SET);
1215
1216         /* Update our PATH to include /sbin  */
1217         if (oldpath) {
1218                 strcat (newpath, ":");
1219                 strcat (newpath, oldpath);
1220         }
1221         putenv (newpath);
1222
1223         tmp = getenv("MKE2FS_SYNC");
1224         if (tmp)
1225                 sync_kludge = atoi(tmp);
1226
1227         /* Determine the system page size if possible */
1228 #ifdef HAVE_SYSCONF
1229 #if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE))
1230 #define _SC_PAGESIZE _SC_PAGE_SIZE
1231 #endif
1232 #ifdef _SC_PAGESIZE
1233         sysval = sysconf(_SC_PAGESIZE);
1234         if (sysval > 0)
1235                 sys_page_size = sysval;
1236 #endif /* _SC_PAGESIZE */
1237 #endif /* HAVE_SYSCONF */
1238
1239         if ((tmp = getenv("MKE2FS_CONFIG")) != NULL)
1240                 config_fn[0] = tmp;
1241         profile_set_syntax_err_cb(syntax_err_report);
1242         retval = profile_init(config_fn, &profile);
1243         if (retval == ENOENT) {
1244                 retval = profile_init(default_files, &profile);
1245                 if (retval)
1246                         goto profile_error;
1247                 retval = profile_set_default(profile, mke2fs_default_profile);
1248                 if (retval)
1249                         goto profile_error;
1250         } else if (retval) {
1251 profile_error:
1252                 fprintf(stderr, _("Couldn't init profile successfully"
1253                                   " (error: %ld).\n"), retval);
1254                 exit(1);
1255         }
1256
1257         setbuf(stdout, NULL);
1258         setbuf(stderr, NULL);
1259         add_error_table(&et_ext2_error_table);
1260         add_error_table(&et_prof_error_table);
1261         memset(&fs_param, 0, sizeof(struct ext2_super_block));
1262         fs_param.s_rev_level = 1;  /* Create revision 1 filesystems now */
1263
1264 #ifdef __linux__
1265         if (uname(&ut)) {
1266                 perror("uname");
1267                 exit(1);
1268         }
1269         linux_version_code = parse_version_number(ut.release);
1270         if (linux_version_code && linux_version_code < (2*65536 + 2*256))
1271                 fs_param.s_rev_level = 0;
1272 #endif
1273
1274         if (argc && *argv) {
1275                 program_name = get_progname(*argv);
1276
1277                 /* If called as mkfs.ext3, create a journal inode */
1278                 if (!strcmp(program_name, "mkfs.ext3") ||
1279                     !strcmp(program_name, "mke3fs"))
1280                         journal_size = -1;
1281         }
1282
1283         while ((c = getopt (argc, argv,
1284                     "b:cg:i:jl:m:no:qr:s:t:vC:E:FG:I:J:KL:M:N:O:R:ST:U:V")) != EOF) {
1285                 switch (c) {
1286                 case 'b':
1287                         blocksize = strtol(optarg, &tmp, 0);
1288                         b = (blocksize > 0) ? blocksize : -blocksize;
1289                         if (b < EXT2_MIN_BLOCK_SIZE ||
1290                             b > EXT2_MAX_BLOCK_SIZE || *tmp) {
1291                                 com_err(program_name, 0,
1292                                         _("invalid block size - %s"), optarg);
1293                                 exit(1);
1294                         }
1295                         if (blocksize > 4096)
1296                                 fprintf(stderr, _("Warning: blocksize %d not "
1297                                                   "usable on most systems.\n"),
1298                                         blocksize);
1299                         if (blocksize > 0)
1300                                 fs_param.s_log_block_size =
1301                                         int_log2(blocksize >>
1302                                                  EXT2_MIN_BLOCK_LOG_SIZE);
1303                         break;
1304                 case 'c':       /* Check for bad blocks */
1305                         cflag++;
1306                         break;
1307                 case 'C':
1308                         cluster_size = strtoul(optarg, &tmp, 0);
1309                         if (cluster_size < EXT2_MIN_CLUSTER_SIZE ||
1310                             cluster_size > EXT2_MAX_CLUSTER_SIZE || *tmp) {
1311                                 com_err(program_name, 0,
1312                                         _("invalid fragment size - %s"),
1313                                         optarg);
1314                                 exit(1);
1315                         }
1316                         break;
1317                 case 'g':
1318                         fs_param.s_blocks_per_group = strtoul(optarg, &tmp, 0);
1319                         if (*tmp) {
1320                                 com_err(program_name, 0,
1321                                         _("Illegal number for blocks per group"));
1322                                 exit(1);
1323                         }
1324                         if ((fs_param.s_blocks_per_group % 8) != 0) {
1325                                 com_err(program_name, 0,
1326                                 _("blocks per group must be multiple of 8"));
1327                                 exit(1);
1328                         }
1329                         break;
1330                 case 'G':
1331                         flex_bg_size = strtoul(optarg, &tmp, 0);
1332                         if (*tmp) {
1333                                 com_err(program_name, 0,
1334                                         _("Illegal number for flex_bg size"));
1335                                 exit(1);
1336                         }
1337                         if (flex_bg_size < 1 ||
1338                             (flex_bg_size & (flex_bg_size-1)) != 0) {
1339                                 com_err(program_name, 0,
1340                                         _("flex_bg size must be a power of 2"));
1341                                 exit(1);
1342                         }
1343                         break;
1344                 case 'i':
1345                         inode_ratio = strtoul(optarg, &tmp, 0);
1346                         if (inode_ratio < EXT2_MIN_BLOCK_SIZE ||
1347                             inode_ratio > EXT2_MAX_BLOCK_SIZE * 1024 ||
1348                             *tmp) {
1349                                 com_err(program_name, 0,
1350                                         _("invalid inode ratio %s (min %d/max %d)"),
1351                                         optarg, EXT2_MIN_BLOCK_SIZE,
1352                                         EXT2_MAX_BLOCK_SIZE * 1024);
1353                                 exit(1);
1354                         }
1355                         break;
1356                 case 'J':
1357                         parse_journal_opts(optarg);
1358                         break;
1359                 case 'K':
1360                         fprintf(stderr, _("Warning: -K option is deprecated and "
1361                                           "should not be used anymore. Use "
1362                                           "\'-E nodiscard\' extended option "
1363                                           "instead!\n"));
1364                         discard = 0;
1365                         break;
1366                 case 'j':
1367                         if (!journal_size)
1368                                 journal_size = -1;
1369                         break;
1370                 case 'l':
1371                         bad_blocks_filename = malloc(strlen(optarg)+1);
1372                         if (!bad_blocks_filename) {
1373                                 com_err(program_name, ENOMEM,
1374                                         _("in malloc for bad_blocks_filename"));
1375                                 exit(1);
1376                         }
1377                         strcpy(bad_blocks_filename, optarg);
1378                         break;
1379                 case 'm':
1380                         reserved_ratio = strtod(optarg, &tmp);
1381                         if ( *tmp || reserved_ratio > 50 ||
1382                              reserved_ratio < 0) {
1383                                 com_err(program_name, 0,
1384                                         _("invalid reserved blocks percent - %s"),
1385                                         optarg);
1386                                 exit(1);
1387                         }
1388                         break;
1389                 case 'n':
1390                         noaction++;
1391                         break;
1392                 case 'o':
1393                         creator_os = optarg;
1394                         break;
1395                 case 'q':
1396                         quiet = 1;
1397                         break;
1398                 case 'r':
1399                         r_opt = strtoul(optarg, &tmp, 0);
1400                         if (*tmp) {
1401                                 com_err(program_name, 0,
1402                                         _("bad revision level - %s"), optarg);
1403                                 exit(1);
1404                         }
1405                         fs_param.s_rev_level = r_opt;
1406                         break;
1407                 case 's':       /* deprecated */
1408                         s_opt = atoi(optarg);
1409                         break;
1410                 case 'I':
1411                         inode_size = strtoul(optarg, &tmp, 0);
1412                         if (*tmp) {
1413                                 com_err(program_name, 0,
1414                                         _("invalid inode size - %s"), optarg);
1415                                 exit(1);
1416                         }
1417                         break;
1418                 case 'v':
1419                         verbose = 1;
1420                         break;
1421                 case 'F':
1422                         force++;
1423                         break;
1424                 case 'L':
1425                         volume_label = optarg;
1426                         break;
1427                 case 'M':
1428                         mount_dir = optarg;
1429                         break;
1430                 case 'N':
1431                         num_inodes = strtoul(optarg, &tmp, 0);
1432                         if (*tmp) {
1433                                 com_err(program_name, 0,
1434                                         _("bad num inodes - %s"), optarg);
1435                                         exit(1);
1436                         }
1437                         break;
1438                 case 'O':
1439                         fs_features = optarg;
1440                         break;
1441                 case 'E':
1442                 case 'R':
1443                         extended_opts = optarg;
1444                         break;
1445                 case 'S':
1446                         super_only = 1;
1447                         break;
1448                 case 't':
1449                         fs_type = strdup(optarg);
1450                         break;
1451                 case 'T':
1452                         usage_types = strdup(optarg);
1453                         break;
1454                 case 'U':
1455                         fs_uuid = optarg;
1456                         break;
1457                 case 'V':
1458                         /* Print version number and exit */
1459                         show_version_only++;
1460                         break;
1461                 default:
1462                         usage();
1463                 }
1464         }
1465         if ((optind == argc) && !show_version_only)
1466                 usage();
1467         device_name = argv[optind++];
1468
1469         if (!quiet || show_version_only)
1470                 fprintf (stderr, "mke2fs %s (%s)\n", E2FSPROGS_VERSION,
1471                          E2FSPROGS_DATE);
1472
1473         if (show_version_only) {
1474                 fprintf(stderr, _("\tUsing %s\n"),
1475                         error_message(EXT2_ET_BASE));
1476                 exit(0);
1477         }
1478
1479         /*
1480          * If there's no blocksize specified and there is a journal
1481          * device, use it to figure out the blocksize
1482          */
1483         if (blocksize <= 0 && journal_device) {
1484                 ext2_filsys     jfs;
1485                 io_manager      io_ptr;
1486
1487 #ifdef CONFIG_TESTIO_DEBUG
1488                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1489                         io_ptr = test_io_manager;
1490                         test_io_backing_manager = unix_io_manager;
1491                 } else
1492 #endif
1493                         io_ptr = unix_io_manager;
1494                 retval = ext2fs_open(journal_device,
1495                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1496                                      0, io_ptr, &jfs);
1497                 if (retval) {
1498                         com_err(program_name, retval,
1499                                 _("while trying to open journal device %s\n"),
1500                                 journal_device);
1501                         exit(1);
1502                 }
1503                 if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) {
1504                         com_err(program_name, 0,
1505                                 _("Journal dev blocksize (%d) smaller than "
1506                                   "minimum blocksize %d\n"), jfs->blocksize,
1507                                 -blocksize);
1508                         exit(1);
1509                 }
1510                 blocksize = jfs->blocksize;
1511                 printf(_("Using journal device's blocksize: %d\n"), blocksize);
1512                 fs_param.s_log_block_size =
1513                         int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
1514                 ext2fs_close(jfs);
1515         }
1516
1517         if (blocksize > sys_page_size) {
1518                 if (!force) {
1519                         com_err(program_name, 0,
1520                                 _("%d-byte blocks too big for system (max %d)"),
1521                                 blocksize, sys_page_size);
1522                         proceed_question();
1523                 }
1524                 fprintf(stderr, _("Warning: %d-byte blocks too big for system "
1525                                   "(max %d), forced to continue\n"),
1526                         blocksize, sys_page_size);
1527         }
1528         if (optind < argc) {
1529                 fs_blocks_count = parse_num_blocks2(argv[optind++],
1530                                                    fs_param.s_log_block_size);
1531                 if (!fs_blocks_count) {
1532                         com_err(program_name, 0,
1533                                 _("invalid blocks '%s' on device '%s'"),
1534                                 argv[optind - 1], device_name);
1535                         exit(1);
1536                 }
1537         }
1538         if (optind < argc)
1539                 usage();
1540
1541         if (!force)
1542                 check_plausibility(device_name);
1543         check_mount(device_name, force, _("filesystem"));
1544
1545         /* Determine the size of the device (if possible) */
1546         if (noaction && fs_blocks_count) {
1547                 dev_size = fs_blocks_count;
1548                 retval = 0;
1549         } else
1550                 retval = ext2fs_get_device_size2(device_name,
1551                                                  EXT2_BLOCK_SIZE(&fs_param),
1552                                                  &dev_size);
1553
1554         if (retval && (retval != EXT2_ET_UNIMPLEMENTED)) {
1555                 com_err(program_name, retval,
1556                         _("while trying to determine filesystem size"));
1557                 exit(1);
1558         }
1559         if (!fs_blocks_count) {
1560                 if (retval == EXT2_ET_UNIMPLEMENTED) {
1561                         com_err(program_name, 0,
1562                                 _("Couldn't determine device size; you "
1563                                 "must specify\nthe size of the "
1564                                 "filesystem\n"));
1565                         exit(1);
1566                 } else {
1567                         if (dev_size == 0) {
1568                                 com_err(program_name, 0,
1569                                 _("Device size reported to be zero.  "
1570                                   "Invalid partition specified, or\n\t"
1571                                   "partition table wasn't reread "
1572                                   "after running fdisk, due to\n\t"
1573                                   "a modified partition being busy "
1574                                   "and in use.  You may need to reboot\n\t"
1575                                   "to re-read your partition table.\n"
1576                                   ));
1577                                 exit(1);
1578                         }
1579                         fs_blocks_count = dev_size;
1580                         if (sys_page_size > EXT2_BLOCK_SIZE(&fs_param))
1581                                 fs_blocks_count &= ~((blk64_t) ((sys_page_size /
1582                                              EXT2_BLOCK_SIZE(&fs_param))-1));
1583                 }
1584         } else if (!force && (fs_blocks_count > dev_size)) {
1585                 com_err(program_name, 0,
1586                         _("Filesystem larger than apparent device size."));
1587                 proceed_question();
1588         }
1589
1590         if (!fs_type)
1591                 profile_get_string(profile, "devices", device_name,
1592                                    "fs_type", 0, &fs_type);
1593         if (!usage_types)
1594                 profile_get_string(profile, "devices", device_name,
1595                                    "usage_types", 0, &usage_types);
1596
1597         /*
1598          * We have the file system (or device) size, so we can now
1599          * determine the appropriate file system types so the fs can
1600          * be appropriately configured.
1601          */
1602         fs_types = parse_fs_type(fs_type, usage_types, &fs_param,
1603                                  fs_blocks_count ? fs_blocks_count : dev_size,
1604                                  argv[0]);
1605         if (!fs_types) {
1606                 fprintf(stderr, _("Failed to parse fs types list\n"));
1607                 exit(1);
1608         }
1609
1610         /* Figure out what features should be enabled */
1611
1612         tmp = NULL;
1613         if (fs_param.s_rev_level != EXT2_GOOD_OLD_REV) {
1614                 tmp = get_string_from_profile(fs_types, "base_features",
1615                       "sparse_super,filetype,resize_inode,dir_index");
1616                 edit_feature(tmp, &fs_param.s_feature_compat);
1617                 free(tmp);
1618
1619                 /* And which mount options as well */
1620                 tmp = get_string_from_profile(fs_types, "default_mntopts",
1621                                               "acl,user_xattr");
1622                 edit_mntopts(tmp, &fs_param.s_default_mount_opts);
1623                 if (tmp)
1624                         free(tmp);
1625
1626                 for (cpp = fs_types; *cpp; cpp++) {
1627                         tmp = NULL;
1628                         profile_get_string(profile, "fs_types", *cpp,
1629                                            "features", "", &tmp);
1630                         if (tmp && *tmp)
1631                                 edit_feature(tmp, &fs_param.s_feature_compat);
1632                         if (tmp)
1633                                 free(tmp);
1634                 }
1635                 tmp = get_string_from_profile(fs_types, "default_features",
1636                                               "");
1637         }
1638         edit_feature(fs_features ? fs_features : tmp,
1639                      &fs_param.s_feature_compat);
1640         if (tmp)
1641                 free(tmp);
1642
1643         /*
1644          * We now need to do a sanity check of fs_blocks_count for
1645          * 32-bit vs 64-bit block number support.
1646          */
1647         if ((fs_blocks_count > MAX_32_NUM) && (blocksize == 0)) {
1648                 fs_blocks_count /= 4; /* Try using a 4k blocksize */
1649                 blocksize = 4096;
1650                 fs_param.s_log_block_size = 2;
1651         }
1652         if ((fs_blocks_count > MAX_32_NUM) &&
1653             !(fs_param.s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT) &&
1654             get_bool_from_profile(fs_types, "auto_64-bit_support", 0)) {
1655                 fs_param.s_feature_incompat |= EXT4_FEATURE_INCOMPAT_64BIT;
1656                 fs_param.s_feature_compat &= ~EXT2_FEATURE_COMPAT_RESIZE_INODE;
1657         }
1658         if ((fs_blocks_count > MAX_32_NUM) &&
1659             !(fs_param.s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT)) {
1660                 fprintf(stderr, _("%s: Size of device (0x%llx blocks) %s "
1661                                   "too big to be expressed\n\t"
1662                                   "in 32 bits using a blocksize of %d.\n"),
1663                         program_name, fs_blocks_count, device_name,
1664                         EXT2_BLOCK_SIZE(&fs_param));
1665                 exit(1);
1666         }
1667
1668         ext2fs_blocks_count_set(&fs_param, fs_blocks_count);
1669
1670         if (fs_param.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
1671                 fs_types[0] = strdup("journal");
1672                 fs_types[1] = 0;
1673         }
1674
1675         if (verbose) {
1676                 fputs(_("fs_types for mke2fs.conf resolution: "), stdout);
1677                 print_str_list(fs_types);
1678         }
1679
1680         if (r_opt == EXT2_GOOD_OLD_REV &&
1681             (fs_param.s_feature_compat || fs_param.s_feature_incompat ||
1682              fs_param.s_feature_ro_compat)) {
1683                 fprintf(stderr, _("Filesystem features not supported "
1684                                   "with revision 0 filesystems\n"));
1685                 exit(1);
1686         }
1687
1688         if (s_opt > 0) {
1689                 if (r_opt == EXT2_GOOD_OLD_REV) {
1690                         fprintf(stderr, _("Sparse superblocks not supported "
1691                                   "with revision 0 filesystems\n"));
1692                         exit(1);
1693                 }
1694                 fs_param.s_feature_ro_compat |=
1695                         EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1696         } else if (s_opt == 0)
1697                 fs_param.s_feature_ro_compat &=
1698                         ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1699
1700         if (journal_size != 0) {
1701                 if (r_opt == EXT2_GOOD_OLD_REV) {
1702                         fprintf(stderr, _("Journals not supported "
1703                                   "with revision 0 filesystems\n"));
1704                         exit(1);
1705                 }
1706                 fs_param.s_feature_compat |=
1707                         EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1708         }
1709
1710         /* Get reserved_ratio from profile if not specified on cmd line. */
1711         if (reserved_ratio < 0.0) {
1712                 reserved_ratio = get_double_from_profile(
1713                                         fs_types, "reserved_ratio", 5.0);
1714                 if (reserved_ratio > 50 || reserved_ratio < 0) {
1715                         com_err(program_name, 0,
1716                                 _("invalid reserved blocks percent - %lf"),
1717                                 reserved_ratio);
1718                         exit(1);
1719                 }
1720         }
1721
1722         if (fs_param.s_feature_incompat &
1723             EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
1724                 reserved_ratio = 0;
1725                 fs_param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV;
1726                 fs_param.s_feature_compat = 0;
1727                 fs_param.s_feature_ro_compat = 0;
1728         }
1729
1730         if ((fs_param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) &&
1731             (fs_param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE)) {
1732                 fprintf(stderr, _("The resize_inode and meta_bg features "
1733                                   "are not compatible.\n"
1734                                   "They can not be both enabled "
1735                                   "simultaneously.\n"));
1736                 exit(1);
1737         }
1738
1739         /* Set first meta blockgroup via an environment variable */
1740         /* (this is mostly for debugging purposes) */
1741         if ((fs_param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) &&
1742             ((tmp = getenv("MKE2FS_FIRST_META_BG"))))
1743                 fs_param.s_first_meta_bg = atoi(tmp);
1744
1745         /* Get the hardware sector sizes, if available */
1746         retval = ext2fs_get_device_sectsize(device_name, &lsector_size);
1747         if (retval) {
1748                 com_err(program_name, retval,
1749                         _("while trying to determine hardware sector size"));
1750                 exit(1);
1751         }
1752         retval = ext2fs_get_device_phys_sectsize(device_name, &psector_size);
1753         if (retval) {
1754                 com_err(program_name, retval,
1755                         _("while trying to determine physical sector size"));
1756                 exit(1);
1757         }
1758
1759         if ((tmp = getenv("MKE2FS_DEVICE_SECTSIZE")) != NULL)
1760                 lsector_size = atoi(tmp);
1761         if ((tmp = getenv("MKE2FS_DEVICE_PHYS_SECTSIZE")) != NULL)
1762                 psector_size = atoi(tmp);
1763
1764         /* Older kernels may not have physical/logical distinction */
1765         if (!psector_size)
1766                 psector_size = lsector_size;
1767
1768         if (blocksize <= 0) {
1769                 use_bsize = get_int_from_profile(fs_types, "blocksize", 4096);
1770
1771                 if (use_bsize == -1) {
1772                         use_bsize = sys_page_size;
1773                         if ((linux_version_code < (2*65536 + 6*256)) &&
1774                             (use_bsize > 4096))
1775                                 use_bsize = 4096;
1776                 }
1777                 if (lsector_size && use_bsize < lsector_size)
1778                         use_bsize = lsector_size;
1779                 if ((blocksize < 0) && (use_bsize < (-blocksize)))
1780                         use_bsize = -blocksize;
1781                 blocksize = use_bsize;
1782                 ext2fs_blocks_count_set(&fs_param,
1783                                         ext2fs_blocks_count(&fs_param) /
1784                                         (blocksize / 1024));
1785         } else {
1786                 if (blocksize < lsector_size) {                 /* Impossible */
1787                         com_err(program_name, EINVAL,
1788                                 _("while setting blocksize; too small "
1789                                   "for device\n"));
1790                         exit(1);
1791                 } else if ((blocksize < psector_size) &&
1792                            (psector_size <= sys_page_size)) {   /* Suboptimal */
1793                         fprintf(stderr, _("Warning: specified blocksize %d is "
1794                                 "less than device physical sectorsize %d\n"),
1795                                 blocksize, psector_size);
1796                 }
1797         }
1798
1799         fs_param.s_log_block_size =
1800                 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
1801         if (fs_param.s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_BIGALLOC) {
1802                 if (!cluster_size)
1803                         cluster_size = get_int_from_profile(fs_types,
1804                                                             "cluster_size",
1805                                                             blocksize*16);
1806                 fs_param.s_log_cluster_size =
1807                         int_log2(cluster_size >> EXT2_MIN_CLUSTER_LOG_SIZE);
1808         } else
1809                 fs_param.s_log_cluster_size = fs_param.s_log_block_size;
1810
1811         if (inode_ratio == 0) {
1812                 inode_ratio = get_int_from_profile(fs_types, "inode_ratio",
1813                                                    8192);
1814                 if (inode_ratio < blocksize)
1815                         inode_ratio = blocksize;
1816                 if (inode_ratio < EXT2_CLUSTER_SIZE(&fs_param))
1817                         inode_ratio = EXT2_CLUSTER_SIZE(&fs_param);
1818         }
1819
1820 #ifdef HAVE_BLKID_PROBE_GET_TOPOLOGY
1821         retval = get_device_geometry(device_name, &fs_param, psector_size);
1822         if (retval < 0) {
1823                 fprintf(stderr,
1824                         _("warning: Unable to get device geometry for %s\n"),
1825                         device_name);
1826         } else if (retval) {
1827                 printf(_("%s alignment is offset by %lu bytes.\n"),
1828                        device_name, retval);
1829                 printf(_("This may result in very poor performance, "
1830                           "(re)-partitioning suggested.\n"));
1831         }
1832 #endif
1833
1834         blocksize = EXT2_BLOCK_SIZE(&fs_param);
1835
1836         lazy_itable_init = 0;
1837         if (access("/sys/fs/ext4/features/lazy_itable_init", R_OK) == 0)
1838                 lazy_itable_init = 1;
1839
1840         lazy_itable_init = get_bool_from_profile(fs_types,
1841                                                  "lazy_itable_init",
1842                                                  lazy_itable_init);
1843         discard = get_bool_from_profile(fs_types, "discard" , discard);
1844         journal_flags |= get_bool_from_profile(fs_types,
1845                                                "lazy_journal_init", 0) ?
1846                                                EXT2_MKJOURNAL_LAZYINIT : 0;
1847
1848         /* Get options from profile */
1849         for (cpp = fs_types; *cpp; cpp++) {
1850                 tmp = NULL;
1851                 profile_get_string(profile, "fs_types", *cpp, "options", "", &tmp);
1852                         if (tmp && *tmp)
1853                                 parse_extended_opts(&fs_param, tmp);
1854                         free(tmp);
1855         }
1856
1857         if (extended_opts)
1858                 parse_extended_opts(&fs_param, extended_opts);
1859
1860         /* Since sparse_super is the default, we would only have a problem
1861          * here if it was explicitly disabled.
1862          */
1863         if ((fs_param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE) &&
1864             !(fs_param.s_feature_ro_compat&EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1865                 com_err(program_name, 0,
1866                         _("reserved online resize blocks not supported "
1867                           "on non-sparse filesystem"));
1868                 exit(1);
1869         }
1870
1871         if (fs_param.s_blocks_per_group) {
1872                 if (fs_param.s_blocks_per_group < 256 ||
1873                     fs_param.s_blocks_per_group > 8 * (unsigned) blocksize) {
1874                         com_err(program_name, 0,
1875                                 _("blocks per group count out of range"));
1876                         exit(1);
1877                 }
1878         }
1879
1880         if (inode_size == 0)
1881                 inode_size = get_int_from_profile(fs_types, "inode_size", 0);
1882         if (!flex_bg_size && (fs_param.s_feature_incompat &
1883                               EXT4_FEATURE_INCOMPAT_FLEX_BG))
1884                 flex_bg_size = get_int_from_profile(fs_types,
1885                                                     "flex_bg_size", 16);
1886         if (flex_bg_size) {
1887                 if (!(fs_param.s_feature_incompat &
1888                       EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1889                         com_err(program_name, 0,
1890                                 _("Flex_bg feature not enabled, so "
1891                                   "flex_bg size may not be specified"));
1892                         exit(1);
1893                 }
1894                 fs_param.s_log_groups_per_flex = int_log2(flex_bg_size);
1895         }
1896
1897         if (inode_size && fs_param.s_rev_level >= EXT2_DYNAMIC_REV) {
1898                 if (inode_size < EXT2_GOOD_OLD_INODE_SIZE ||
1899                     inode_size > EXT2_BLOCK_SIZE(&fs_param) ||
1900                     inode_size & (inode_size - 1)) {
1901                         com_err(program_name, 0,
1902                                 _("invalid inode size %d (min %d/max %d)"),
1903                                 inode_size, EXT2_GOOD_OLD_INODE_SIZE,
1904                                 blocksize);
1905                         exit(1);
1906                 }
1907                 fs_param.s_inode_size = inode_size;
1908         }
1909
1910         /* Make sure number of inodes specified will fit in 32 bits */
1911         if (num_inodes == 0) {
1912                 unsigned long long n;
1913                 n = ext2fs_blocks_count(&fs_param) * blocksize / inode_ratio;
1914                 if (n > MAX_32_NUM) {
1915                         if (fs_param.s_feature_incompat &
1916                             EXT4_FEATURE_INCOMPAT_64BIT)
1917                                 num_inodes = MAX_32_NUM;
1918                         else {
1919                                 com_err(program_name, 0,
1920                                         _("too many inodes (%llu), raise"
1921                                           "inode ratio?"), n);
1922                                 exit(1);
1923                         }
1924                 }
1925         } else if (num_inodes > MAX_32_NUM) {
1926                 com_err(program_name, 0,
1927                         _("too many inodes (%llu), specify < 2^32 inodes"),
1928                           num_inodes);
1929                 exit(1);
1930         }
1931         /*
1932          * Calculate number of inodes based on the inode ratio
1933          */
1934         fs_param.s_inodes_count = num_inodes ? num_inodes :
1935                 (ext2fs_blocks_count(&fs_param) * blocksize) / inode_ratio;
1936
1937         if ((((long long)fs_param.s_inodes_count) *
1938              (inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE)) >=
1939             ((ext2fs_blocks_count(&fs_param)) *
1940              EXT2_BLOCK_SIZE(&fs_param))) {
1941                 com_err(program_name, 0, _("inode_size (%u) * inodes_count "
1942                                           "(%u) too big for a\n\t"
1943                                           "filesystem with %llu blocks, "
1944                                           "specify higher inode_ratio (-i)\n\t"
1945                                           "or lower inode count (-N).\n"),
1946                         inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE,
1947                         fs_param.s_inodes_count,
1948                         (unsigned long long) ext2fs_blocks_count(&fs_param));
1949                 exit(1);
1950         }
1951
1952         /*
1953          * Calculate number of blocks to reserve
1954          */
1955         ext2fs_r_blocks_count_set(&fs_param, reserved_ratio *
1956                                   ext2fs_blocks_count(&fs_param) / 100.0);
1957
1958         free(fs_type);
1959         free(usage_types);
1960 }
1961
1962 static int should_do_undo(const char *name)
1963 {
1964         errcode_t retval;
1965         io_channel channel;
1966         __u16   s_magic;
1967         struct ext2_super_block super;
1968         io_manager manager = unix_io_manager;
1969         int csum_flag, force_undo;
1970
1971         csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(&fs_param,
1972                                                EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1973         force_undo = get_int_from_profile(fs_types, "force_undo", 0);
1974         if (!force_undo && (!csum_flag || !lazy_itable_init))
1975                 return 0;
1976
1977         retval = manager->open(name, IO_FLAG_EXCLUSIVE,  &channel);
1978         if (retval) {
1979                 /*
1980                  * We don't handle error cases instead we
1981                  * declare that the file system doesn't exist
1982                  * and let the rest of mke2fs take care of
1983                  * error
1984                  */
1985                 retval = 0;
1986                 goto open_err_out;
1987         }
1988
1989         io_channel_set_blksize(channel, SUPERBLOCK_OFFSET);
1990         retval = io_channel_read_blk64(channel, 1, -SUPERBLOCK_SIZE, &super);
1991         if (retval) {
1992                 retval = 0;
1993                 goto err_out;
1994         }
1995
1996 #if defined(WORDS_BIGENDIAN)
1997         s_magic = ext2fs_swab16(super.s_magic);
1998 #else
1999         s_magic = super.s_magic;
2000 #endif
2001
2002         if (s_magic == EXT2_SUPER_MAGIC)
2003                 retval = 1;
2004
2005 err_out:
2006         io_channel_close(channel);
2007
2008 open_err_out:
2009
2010         return retval;
2011 }
2012
2013 static int mke2fs_setup_tdb(const char *name, io_manager *io_ptr)
2014 {
2015         errcode_t retval = ENOMEM;
2016         char *tdb_dir, *tdb_file = NULL;
2017         char *device_name, *tmp_name;
2018
2019         /*
2020          * Configuration via a conf file would be
2021          * nice
2022          */
2023         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2024         if (!tdb_dir)
2025                 profile_get_string(profile, "defaults",
2026                                    "undo_dir", 0, "/var/lib/e2fsprogs",
2027                                    &tdb_dir);
2028
2029         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2030             access(tdb_dir, W_OK))
2031                 return 0;
2032
2033         tmp_name = strdup(name);
2034         if (!tmp_name)
2035                 goto errout;
2036         device_name = basename(tmp_name);
2037         tdb_file = malloc(strlen(tdb_dir) + 8 + strlen(device_name) + 7 + 1);
2038         if (!tdb_file) {
2039                 free(tmp_name);
2040                 goto errout;
2041         }
2042         sprintf(tdb_file, "%s/mke2fs-%s.e2undo", tdb_dir, device_name);
2043         free(tmp_name);
2044
2045         if (!access(tdb_file, F_OK)) {
2046                 if (unlink(tdb_file) < 0) {
2047                         retval = errno;
2048                         goto errout;
2049                 }
2050         }
2051
2052         set_undo_io_backing_manager(*io_ptr);
2053         *io_ptr = undo_io_manager;
2054         retval = set_undo_io_backup_file(tdb_file);
2055         if (retval)
2056                 goto errout;
2057         printf(_("Overwriting existing filesystem; this can be undone "
2058                  "using the command:\n"
2059                  "    e2undo %s %s\n\n"), tdb_file, name);
2060
2061         free(tdb_file);
2062         return 0;
2063
2064 errout:
2065         free(tdb_file);
2066         com_err(program_name, retval,
2067                 _("while trying to setup undo file\n"));
2068         return retval;
2069 }
2070
2071 static int mke2fs_discard_device(ext2_filsys fs)
2072 {
2073         struct ext2fs_numeric_progress_struct progress;
2074         blk64_t blocks = ext2fs_blocks_count(fs->super);
2075         blk64_t count = DISCARD_STEP_MB;
2076         blk64_t cur = 0;
2077         int retval = 0;
2078
2079         retval = io_channel_discard(fs->io, 0, 0);
2080         if (retval)
2081                 return retval;
2082
2083         count *= (1024 * 1024);
2084         count /= fs->blocksize;
2085
2086         ext2fs_numeric_progress_init(fs, &progress,
2087                                      _("Discarding device blocks: "),
2088                                      blocks);
2089         while (cur < blocks) {
2090                 ext2fs_numeric_progress_update(fs, &progress, cur);
2091
2092                 if (cur + count > blocks)
2093                         count = blocks - cur;
2094
2095                 retval = io_channel_discard(fs->io, cur, count);
2096                 if (retval)
2097                         break;
2098                 cur += count;
2099         }
2100
2101         if (retval) {
2102                 ext2fs_numeric_progress_close(fs, &progress,
2103                                       _("failed - "));
2104                 if (!quiet)
2105                         printf("%s\n",error_message(retval));
2106         } else
2107                 ext2fs_numeric_progress_close(fs, &progress,
2108                                       _("done                            \n"));
2109
2110         return retval;
2111 }
2112
2113 static void fix_cluster_bg_counts(ext2_filsys fs)
2114 {
2115         blk64_t cluster, num_clusters, tot_free;
2116         int     grp_free, num_free, group, num;
2117
2118         num_clusters = EXT2FS_B2C(fs, ext2fs_blocks_count(fs->super));
2119         tot_free = num_free = num = group = grp_free = 0;
2120         for (cluster = EXT2FS_B2C(fs, fs->super->s_first_data_block);
2121              cluster < num_clusters; cluster++) {
2122                 if (!ext2fs_test_block_bitmap2(fs->block_map,
2123                                                EXT2FS_C2B(fs, cluster))) {
2124                         grp_free++;
2125                         tot_free++;
2126                 }
2127                 num++;
2128                 if ((num == fs->super->s_clusters_per_group) ||
2129                     (cluster == num_clusters-1)) {
2130                         ext2fs_bg_free_blocks_count_set(fs, group, grp_free);
2131                         ext2fs_group_desc_csum_set(fs, group);
2132                         num = 0;
2133                         grp_free = 0;
2134                         group++;
2135                 }
2136         }
2137         ext2fs_free_blocks_count_set(fs->super, EXT2FS_C2B(fs, tot_free));
2138 }
2139
2140 int main (int argc, char *argv[])
2141 {
2142         errcode_t       retval = 0;
2143         ext2_filsys     fs;
2144         badblocks_list  bb_list = 0;
2145         unsigned int    journal_blocks;
2146         unsigned int    i;
2147         int             val, hash_alg;
2148         int             flags;
2149         int             old_bitmaps;
2150         io_manager      io_ptr;
2151         char            tdb_string[40];
2152         char            *hash_alg_str;
2153         int             itable_zeroed = 0;
2154
2155 #ifdef ENABLE_NLS
2156         setlocale(LC_MESSAGES, "");
2157         setlocale(LC_CTYPE, "");
2158         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2159         textdomain(NLS_CAT_NAME);
2160 #endif
2161         PRS(argc, argv);
2162
2163 #ifdef CONFIG_TESTIO_DEBUG
2164         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
2165                 io_ptr = test_io_manager;
2166                 test_io_backing_manager = unix_io_manager;
2167         } else
2168 #endif
2169                 io_ptr = unix_io_manager;
2170
2171         if (should_do_undo(device_name)) {
2172                 retval = mke2fs_setup_tdb(device_name, &io_ptr);
2173                 if (retval)
2174                         exit(1);
2175         }
2176
2177         /*
2178          * Initialize the superblock....
2179          */
2180         flags = EXT2_FLAG_EXCLUSIVE;
2181         profile_get_boolean(profile, "options", "old_bitmaps", 0, 0,
2182                             &old_bitmaps);
2183         if (!old_bitmaps)
2184                 flags |= EXT2_FLAG_64BITS;
2185         /*
2186          * By default, we print how many inode tables or block groups
2187          * or whatever we've written so far.  The quiet flag disables
2188          * this, along with a lot of other output.
2189          */
2190         if (!quiet)
2191                 flags |= EXT2_FLAG_PRINT_PROGRESS;
2192         retval = ext2fs_initialize(device_name, flags, &fs_param, io_ptr, &fs);
2193         if (retval) {
2194                 com_err(device_name, retval, _("while setting up superblock"));
2195                 exit(1);
2196         }
2197
2198         /* Can't undo discard ... */
2199         if (!noaction && discard && (io_ptr != undo_io_manager)) {
2200                 retval = mke2fs_discard_device(fs);
2201                 if (!retval && io_channel_discard_zeroes_data(fs->io)) {
2202                         if (verbose)
2203                                 printf(_("Discard succeeded and will return 0s "
2204                                          " - skipping inode table wipe\n"));
2205                         lazy_itable_init = 1;
2206                         itable_zeroed = 1;
2207                 }
2208         }
2209
2210         sprintf(tdb_string, "tdb_data_size=%d", fs->blocksize <= 4096 ?
2211                 32768 : fs->blocksize * 8);
2212         io_channel_set_options(fs->io, tdb_string);
2213
2214         if (fs_param.s_flags & EXT2_FLAGS_TEST_FILESYS)
2215                 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
2216
2217         if ((fs_param.s_feature_incompat &
2218              (EXT3_FEATURE_INCOMPAT_EXTENTS|EXT4_FEATURE_INCOMPAT_FLEX_BG)) ||
2219             (fs_param.s_feature_ro_compat &
2220              (EXT4_FEATURE_RO_COMPAT_HUGE_FILE|EXT4_FEATURE_RO_COMPAT_GDT_CSUM|
2221               EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
2222               EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE)))
2223                 fs->super->s_kbytes_written = 1;
2224
2225         /*
2226          * Wipe out the old on-disk superblock
2227          */
2228         if (!noaction)
2229                 zap_sector(fs, 2, 6);
2230
2231         /*
2232          * Parse or generate a UUID for the filesystem
2233          */
2234         if (fs_uuid) {
2235                 if (uuid_parse(fs_uuid, fs->super->s_uuid) !=0) {
2236                         com_err(device_name, 0, "could not parse UUID: %s\n",
2237                                 fs_uuid);
2238                         exit(1);
2239                 }
2240         } else
2241                 uuid_generate(fs->super->s_uuid);
2242
2243         /*
2244          * Initialize the directory index variables
2245          */
2246         hash_alg_str = get_string_from_profile(fs_types, "hash_alg",
2247                                                "half_md4");
2248         hash_alg = e2p_string2hash(hash_alg_str);
2249         free(hash_alg_str);
2250         fs->super->s_def_hash_version = (hash_alg >= 0) ? hash_alg :
2251                 EXT2_HASH_HALF_MD4;
2252         uuid_generate((unsigned char *) fs->super->s_hash_seed);
2253
2254         /*
2255          * Periodic checks can be enabled/disabled via config file.
2256          * Note we override the kernel include file's idea of what the default
2257          * check interval (never) should be.  It's a good idea to check at
2258          * least *occasionally*, specially since servers will never rarely get
2259          * to reboot, since Linux is so robust these days.  :-)
2260          *
2261          * 180 days (six months) seems like a good value.
2262          */
2263 #ifdef EXT2_DFL_CHECKINTERVAL
2264 #undef EXT2_DFL_CHECKINTERVAL
2265 #endif
2266 #define EXT2_DFL_CHECKINTERVAL (86400L * 180L)
2267
2268         if (get_bool_from_profile(fs_types, "enable_periodic_fsck", 0)) {
2269                 fs->super->s_checkinterval = EXT2_DFL_CHECKINTERVAL;
2270                 fs->super->s_max_mnt_count = EXT2_DFL_MAX_MNT_COUNT;
2271                 /*
2272                  * Add "jitter" to the superblock's check interval so that we
2273                  * don't check all the filesystems at the same time.  We use a
2274                  * kludgy hack of using the UUID to derive a random jitter value
2275                  */
2276                 for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++)
2277                         val += fs->super->s_uuid[i];
2278                 fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT;
2279         }
2280
2281         /*
2282          * Override the creator OS, if applicable
2283          */
2284         if (creator_os && !set_os(fs->super, creator_os)) {
2285                 com_err (program_name, 0, _("unknown os - %s"), creator_os);
2286                 exit(1);
2287         }
2288
2289         /*
2290          * For the Hurd, we will turn off filetype since it doesn't
2291          * support it.
2292          */
2293         if (fs->super->s_creator_os == EXT2_OS_HURD)
2294                 fs->super->s_feature_incompat &=
2295                         ~EXT2_FEATURE_INCOMPAT_FILETYPE;
2296
2297         /*
2298          * Set the volume label...
2299          */
2300         if (volume_label) {
2301                 memset(fs->super->s_volume_name, 0,
2302                        sizeof(fs->super->s_volume_name));
2303                 strncpy(fs->super->s_volume_name, volume_label,
2304                         sizeof(fs->super->s_volume_name));
2305         }
2306
2307         /*
2308          * Set the last mount directory
2309          */
2310         if (mount_dir) {
2311                 memset(fs->super->s_last_mounted, 0,
2312                        sizeof(fs->super->s_last_mounted));
2313                 strncpy(fs->super->s_last_mounted, mount_dir,
2314                         sizeof(fs->super->s_last_mounted));
2315         }
2316
2317         if (!quiet || noaction)
2318                 show_stats(fs);
2319
2320         if (noaction)
2321                 exit(0);
2322
2323         if (fs->super->s_feature_incompat &
2324             EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
2325                 create_journal_dev(fs);
2326                 exit(ext2fs_close(fs) ? 1 : 0);
2327         }
2328
2329         if (bad_blocks_filename)
2330                 read_bb_file(fs, &bb_list, bad_blocks_filename);
2331         if (cflag)
2332                 test_disk(fs, &bb_list);
2333
2334         handle_bad_blocks(fs, bb_list);
2335         fs->stride = fs_stride = fs->super->s_raid_stride;
2336         if (!quiet)
2337                 printf(_("Allocating group tables: "));
2338         retval = ext2fs_allocate_tables(fs);
2339         if (retval) {
2340                 com_err(program_name, retval,
2341                         _("while trying to allocate filesystem tables"));
2342                 exit(1);
2343         }
2344         if (!quiet)
2345                 printf(_("done                            \n"));
2346
2347         retval = ext2fs_convert_subcluster_bitmap(fs, &fs->block_map);
2348         if (retval) {
2349                 com_err(program_name, retval,
2350                         _("\n\twhile converting subcluster bitmap"));
2351                 exit(1);
2352         }
2353
2354         if (super_only) {
2355                 fs->super->s_state |= EXT2_ERROR_FS;
2356                 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY);
2357         } else {
2358                 /* rsv must be a power of two (64kB is MD RAID sb alignment) */
2359                 blk64_t rsv = 65536 / fs->blocksize;
2360                 blk64_t blocks = ext2fs_blocks_count(fs->super);
2361                 blk64_t start;
2362                 blk64_t ret_blk;
2363
2364 #ifdef ZAP_BOOTBLOCK
2365                 zap_sector(fs, 0, 2);
2366 #endif
2367
2368                 /*
2369                  * Wipe out any old MD RAID (or other) metadata at the end
2370                  * of the device.  This will also verify that the device is
2371                  * as large as we think.  Be careful with very small devices.
2372                  */
2373                 start = (blocks & ~(rsv - 1));
2374                 if (start > rsv)
2375                         start -= rsv;
2376                 if (start > 0)
2377                         retval = ext2fs_zero_blocks2(fs, start, blocks - start,
2378                                                     &ret_blk, NULL);
2379
2380                 if (retval) {
2381                         com_err(program_name, retval,
2382                                 _("while zeroing block %llu at end of filesystem"),
2383                                 ret_blk);
2384                 }
2385                 write_inode_tables(fs, lazy_itable_init, itable_zeroed);
2386                 create_root_dir(fs);
2387                 create_lost_and_found(fs);
2388                 reserve_inodes(fs);
2389                 create_bad_block_inode(fs, bb_list);
2390                 if (fs->super->s_feature_compat &
2391                     EXT2_FEATURE_COMPAT_RESIZE_INODE) {
2392                         retval = ext2fs_create_resize_inode(fs);
2393                         if (retval) {
2394                                 com_err("ext2fs_create_resize_inode", retval,
2395                                 _("while reserving blocks for online resize"));
2396                                 exit(1);
2397                         }
2398                 }
2399         }
2400
2401         if (journal_device) {
2402                 ext2_filsys     jfs;
2403
2404                 if (!force)
2405                         check_plausibility(journal_device);
2406                 check_mount(journal_device, force, _("journal"));
2407
2408                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
2409                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
2410                                      fs->blocksize, unix_io_manager, &jfs);
2411                 if (retval) {
2412                         com_err(program_name, retval,
2413                                 _("while trying to open journal device %s\n"),
2414                                 journal_device);
2415                         exit(1);
2416                 }
2417                 if (!quiet) {
2418                         printf(_("Adding journal to device %s: "),
2419                                journal_device);
2420                         fflush(stdout);
2421                 }
2422                 retval = ext2fs_add_journal_device(fs, jfs);
2423                 if(retval) {
2424                         com_err (program_name, retval,
2425                                  _("\n\twhile trying to add journal to device %s"),
2426                                  journal_device);
2427                         exit(1);
2428                 }
2429                 if (!quiet)
2430                         printf(_("done\n"));
2431                 ext2fs_close(jfs);
2432                 free(journal_device);
2433         } else if ((journal_size) ||
2434                    (fs_param.s_feature_compat &
2435                     EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
2436                 journal_blocks = figure_journal_size(journal_size, fs);
2437
2438                 if (super_only) {
2439                         printf(_("Skipping journal creation in super-only mode\n"));
2440                         fs->super->s_journal_inum = EXT2_JOURNAL_INO;
2441                         goto no_journal;
2442                 }
2443
2444                 if (!journal_blocks) {
2445                         fs->super->s_feature_compat &=
2446                                 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
2447                         goto no_journal;
2448                 }
2449                 if (!quiet) {
2450                         printf(_("Creating journal (%u blocks): "),
2451                                journal_blocks);
2452                         fflush(stdout);
2453                 }
2454                 retval = ext2fs_add_journal_inode(fs, journal_blocks,
2455                                                   journal_flags);
2456                 if (retval) {
2457                         com_err (program_name, retval,
2458                                  _("\n\twhile trying to create journal"));
2459                         exit(1);
2460                 }
2461                 if (!quiet)
2462                         printf(_("done\n"));
2463         }
2464 no_journal:
2465
2466         if (EXT2_HAS_RO_COMPAT_FEATURE(&fs_param,
2467                                        EXT4_FEATURE_RO_COMPAT_BIGALLOC))
2468                 fix_cluster_bg_counts(fs);
2469         if (!quiet)
2470                 printf(_("Writing superblocks and "
2471                        "filesystem accounting information: "));
2472         retval = ext2fs_flush(fs);
2473         if (retval) {
2474                 fprintf(stderr,
2475                         _("\nWarning, had trouble writing out superblocks."));
2476         }
2477         if (!quiet) {
2478                 printf(_("done\n\n"));
2479                 if (!getenv("MKE2FS_SKIP_CHECK_MSG"))
2480                         print_check_message(fs);
2481         }
2482         val = ext2fs_close(fs);
2483         remove_error_table(&et_ext2_error_table);
2484         remove_error_table(&et_prof_error_table);
2485         profile_release(profile);
2486         for (i=0; fs_types[i]; i++)
2487                 free(fs_types[i]);
2488         free(fs_types);
2489         return (retval || val) ? 1 : 0;
2490 }