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
  20
  21 #include "config.h"
  22 #include <stdio.h>
  23 #include <string.h>
  24 #include <strings.h>
  25 #include <ctype.h>
  26 #include <time.h>
  27 #ifdef __linux__
  28 #include <sys/utsname.h>
  29 #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
  30 #endif
  31 #ifdef HAVE_GETOPT_H
  32 #include <getopt.h>
  33 #else
  34 extern char *optarg;
  35 extern int optind;
  36 #endif
  37 #ifdef HAVE_UNISTD_H
  38 #include <unistd.h>
  39 #endif
  40 #ifdef HAVE_STDLIB_H
  41 #include <stdlib.h>
  42 #endif
  43 #ifdef HAVE_ERRNO_H
  44 #include <errno.h>
  45 #endif
  46 #ifdef HAVE_SYS_IOCTL_H
  47 #include <sys/ioctl.h>
  48 #endif
  49 #include <libgen.h>
  50 #include <limits.h>
  51 #include <blkid/blkid.h>
  52
  53 #include "ext2fs/ext2_fs.h"
  54 #include "ext2fs/ext2fsP.h"
  55 #include "uuid/uuid.h"
  56 #include "util.h"
  57 #include "support/nls-enable.h"
  58 #include "support/plausible.h"
  59 #include "support/profile.h"
  60 #include "support/prof_err.h"
  61 #include "../version.h"
  62 #include "support/quotaio.h"
  63 #include "mke2fs.h"
  64 #include "create_inode.h"
  65
  66 #define STRIDE_LENGTH 8
  67
  68 #define MAX_32_NUM ((((unsigned long long) 1) << 32) - 1)
  69
  70 #ifndef __sparc__
  71 #define ZAP_BOOTBLOCK
  72 #endif
  73
  74 #define DISCARD_STEP_MB         (2048)
  75
  76 extern int isatty(int);
  77 extern FILE *fpopen(const char *cmd, const char *mode);
  78
  79 const char * program_name = "mke2fs";
  80 static const char * device_name /* = NULL */;
  81
  82 /* Command line options */
  83 static int      cflag;
  84 int     verbose;
  85 int     quiet;
  86 static int      super_only;
  87 static int      discard = 1;    /* attempt to discard device before fs creation */
  88 static int      direct_io;
  89 static int      force;
  90 static int      noaction;
  91 static int      num_backups = 2; /* number of backup bg's for sparse_super2 */
  92 static uid_t    root_uid;
  93 static gid_t    root_gid;
  94 int     journal_size;
  95 int     journal_flags;
  96 static int      lazy_itable_init;
  97 static int      packed_meta_blocks;
  98 int             no_copy_xattrs;
  99 static char     *bad_blocks_filename = NULL;
 100 static __u32    fs_stride;
 101 /* Initialize usr/grp quotas by default */
 102 static unsigned int quotatype_bits = (QUOTA_USR_BIT | QUOTA_GRP_BIT);
 103 static __u64    offset;
 104 static blk64_t journal_location = ~0LL;
 105 static int      proceed_delay = -1;
 106 static blk64_t  dev_size;
 107
 108 static struct ext2_super_block fs_param;
 109 static __u32 zero_buf[4];
 110 static char *fs_uuid = NULL;
 111 static char *creator_os;
 112 static char *volume_label;
 113 static char *mount_dir;
 114 char *journal_device;
 115 static int sync_kludge; /* Set using the MKE2FS_SYNC env. option */
 116 char **fs_types;
 117 const char *src_root_dir;  /* Copy files from the specified directory */
 118 static char *undo_file;
 119
 120 static int android_sparse_file; /* -E android_sparse */
 121
 122 static profile_t        profile;
 123
 124 static int sys_page_size = 4096;
 125
 126 static int errors_behavior = 0;
 127
 128 static void usage(void)
 129 {
 130         fprintf(stderr, _("Usage: %s [-c|-l filename] [-b block-size] "
 131         "[-C cluster-size]\n\t[-i bytes-per-inode] [-I inode-size] "
 132         "[-J journal-options]\n"
 133         "\t[-G flex-group-size] [-N number-of-inodes] "
 134         "[-d root-directory]\n"
 135         "\t[-m reserved-blocks-percentage] [-o creator-os]\n"
 136         "\t[-g blocks-per-group] [-L volume-label] "
 137         "[-M last-mounted-directory]\n\t[-O feature[,...]] "
 138         "[-r fs-revision] [-E extended-option[,...]]\n"
 139         "\t[-t fs-type] [-T usage-type ] [-U UUID] [-e errors_behavior]"
 140         "[-z undo_file]\n"
 141         "\t[-jnqvDFSV] device [blocks-count]\n"),
 142                 program_name);
 143         exit(1);
 144 }
 145
 146 static int int_log2(unsigned long long arg)
 147 {
 148         int     l = 0;
 149
 150         arg >>= 1;
 151         while (arg) {
 152                 l++;
 153                 arg >>= 1;
 154         }
 155         return l;
 156 }
 157
 158 int int_log10(unsigned long long arg)
 159 {
 160         int     l;
 161
 162         for (l=0; arg ; l++)
 163                 arg = arg / 10;
 164         return l;
 165 }
 166
 167 #ifdef __linux__
 168 static int parse_version_number(const char *s)
 169 {
 170         int     major, minor, rev;
 171         char    *endptr;
 172         const char *cp = s;
 173
 174         if (!s)
 175                 return 0;
 176         major = strtol(cp, &endptr, 10);
 177         if (cp == endptr || *endptr != '.')
 178                 return 0;
 179         cp = endptr + 1;
 180         minor = strtol(cp, &endptr, 10);
 181         if (cp == endptr || *endptr != '.')
 182                 return 0;
 183         cp = endptr + 1;
 184         rev = strtol(cp, &endptr, 10);
 185         if (cp == endptr)
 186                 return 0;
 187         return KERNEL_VERSION(major, minor, rev);
 188 }
 189
 190 static int is_before_linux_ver(unsigned int major, unsigned int minor,
 191                                unsigned int rev)
 192 {
 193         struct          utsname ut;
 194         static int      linux_version_code = -1;
 195
 196         if (uname(&ut)) {
 197                 perror("uname");
 198                 exit(1);
 199         }
 200         if (linux_version_code < 0)
 201                 linux_version_code = parse_version_number(ut.release);
 202         if (linux_version_code == 0)
 203                 return 0;
 204
 205         return linux_version_code < (int) KERNEL_VERSION(major, minor, rev);
 206 }
 207 #else
 208 static int is_before_linux_ver(unsigned int major, unsigned int minor,
 209                                unsigned int rev)
 210 {
 211         return 0;
 212 }
 213 #endif
 214
 215 /*
 216  * Helper function for read_bb_file and test_disk
 217  */
 218 static void invalid_block(ext2_filsys fs EXT2FS_ATTR((unused)), blk_t blk)
 219 {
 220         fprintf(stderr, _("Bad block %u out of range; ignored.\n"), blk);
 221         return;
 222 }
 223
 224 /*
 225  * Reads the bad blocks list from a file
 226  */
 227 static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list,
 228                          const char *bad_blocks_file)
 229 {
 230         FILE            *f;
 231         errcode_t       retval;
 232
 233         f = fopen(bad_blocks_file, "r");
 234         if (!f) {
 235                 com_err("read_bad_blocks_file", errno,
 236                         _("while trying to open %s"), bad_blocks_file);
 237                 exit(1);
 238         }
 239         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 240         fclose (f);
 241         if (retval) {
 242                 com_err("ext2fs_read_bb_FILE", retval, "%s",
 243                         _("while reading in list of bad blocks from file"));
 244                 exit(1);
 245         }
 246 }
 247
 248 /*
 249  * Runs the badblocks program to test the disk
 250  */
 251 static void test_disk(ext2_filsys fs, badblocks_list *bb_list)
 252 {
 253         FILE            *f;
 254         errcode_t       retval;
 255         char            buf[1024];
 256
 257         sprintf(buf, "badblocks -b %d -X %s%s%s %llu", fs->blocksize,
 258                 quiet ? "" : "-s ", (cflag > 1) ? "-w " : "",
 259                 fs->device_name, ext2fs_blocks_count(fs->super)-1);
 260         if (verbose)
 261                 printf(_("Running command: %s\n"), buf);
 262         f = popen(buf, "r");
 263         if (!f) {
 264                 com_err("popen", errno,
 265                         _("while trying to run '%s'"), buf);
 266                 exit(1);
 267         }
 268         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 269         pclose(f);
 270         if (retval) {
 271                 com_err("ext2fs_read_bb_FILE", retval, "%s",
 272                         _("while processing list of bad blocks from program"));
 273                 exit(1);
 274         }
 275 }
 276
 277 static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list)
 278 {
 279         dgrp_t                  i;
 280         blk_t                   j;
 281         unsigned                must_be_good;
 282         blk_t                   blk;
 283         badblocks_iterate       bb_iter;
 284         errcode_t               retval;
 285         blk_t                   group_block;
 286         int                     group;
 287         int                     group_bad;
 288
 289         if (!bb_list)
 290                 return;
 291
 292         /*
 293          * The primary superblock and group descriptors *must* be
 294          * good; if not, abort.
 295          */
 296         must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks;
 297         for (i = fs->super->s_first_data_block; i <= must_be_good; i++) {
 298                 if (ext2fs_badblocks_list_test(bb_list, i)) {
 299                         fprintf(stderr, _("Block %d in primary "
 300                                 "superblock/group descriptor area bad.\n"), i);
 301                         fprintf(stderr, _("Blocks %u through %u must be good "
 302                                 "in order to build a filesystem.\n"),
 303                                 fs->super->s_first_data_block, must_be_good);
 304                         fputs(_("Aborting....\n"), stderr);
 305                         exit(1);
 306                 }
 307         }
 308
 309         /*
 310          * See if any of the bad blocks are showing up in the backup
 311          * superblocks and/or group descriptors.  If so, issue a
 312          * warning and adjust the block counts appropriately.
 313          */
 314         group_block = fs->super->s_first_data_block +
 315                 fs->super->s_blocks_per_group;
 316
 317         for (i = 1; i < fs->group_desc_count; i++) {
 318                 group_bad = 0;
 319                 for (j=0; j < fs->desc_blocks+1; j++) {
 320                         if (ext2fs_badblocks_list_test(bb_list,
 321                                                        group_block + j)) {
 322                                 if (!group_bad)
 323                                         fprintf(stderr,
 324 _("Warning: the backup superblock/group descriptors at block %u contain\n"
 325 "       bad blocks.\n\n"),
 326                                                 group_block);
 327                                 group_bad++;
 328                                 group = ext2fs_group_of_blk2(fs, group_block+j);
 329                                 ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
 330                                 ext2fs_group_desc_csum_set(fs, group);
 331                                 ext2fs_free_blocks_count_add(fs->super, 1);
 332                         }
 333                 }
 334                 group_block += fs->super->s_blocks_per_group;
 335         }
 336
 337         /*
 338          * Mark all the bad blocks as used...
 339          */
 340         retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
 341         if (retval) {
 342                 com_err("ext2fs_badblocks_list_iterate_begin", retval, "%s",
 343                         _("while marking bad blocks as used"));
 344                 exit(1);
 345         }
 346         while (ext2fs_badblocks_list_iterate(bb_iter, &blk))
 347                 ext2fs_mark_block_bitmap2(fs->block_map, EXT2FS_B2C(fs, blk));
 348         ext2fs_badblocks_list_iterate_end(bb_iter);
 349 }
 350
 351 static void write_reserved_inodes(ext2_filsys fs)
 352 {
 353         errcode_t       retval;
 354         ext2_ino_t      ino;
 355         struct ext2_inode *inode;
 356
 357         retval = ext2fs_get_memzero(EXT2_INODE_SIZE(fs->super), &inode);
 358         if (retval) {
 359                 com_err("inode_init", retval, _("while allocating memory"));
 360                 exit(1);
 361         }
 362
 363         for (ino = 1; ino < EXT2_FIRST_INO(fs->super); ino++) {
 364                 retval = ext2fs_write_inode_full(fs, ino, inode,
 365                                                  EXT2_INODE_SIZE(fs->super));
 366                 if (retval) {
 367                         com_err("ext2fs_write_inode_full", retval,
 368                                 _("while writing reserved inodes"));
 369                         exit(1);
 370                 }
 371         }
 372
 373         ext2fs_free_mem(&inode);
 374 }
 375
 376 static errcode_t packed_allocate_tables(ext2_filsys fs)
 377 {
 378         errcode_t       retval;
 379         dgrp_t          i;
 380         blk64_t         goal = 0;
 381
 382         for (i = 0; i < fs->group_desc_count; i++) {
 383                 retval = ext2fs_new_block2(fs, goal, NULL, &goal);
 384                 if (retval)
 385                         return retval;
 386                 ext2fs_block_alloc_stats2(fs, goal, +1);
 387                 ext2fs_block_bitmap_loc_set(fs, i, goal);
 388         }
 389         for (i = 0; i < fs->group_desc_count; i++) {
 390                 retval = ext2fs_new_block2(fs, goal, NULL, &goal);
 391                 if (retval)
 392                         return retval;
 393                 ext2fs_block_alloc_stats2(fs, goal, +1);
 394                 ext2fs_inode_bitmap_loc_set(fs, i, goal);
 395         }
 396         for (i = 0; i < fs->group_desc_count; i++) {
 397                 blk64_t end = ext2fs_blocks_count(fs->super) - 1;
 398                 retval = ext2fs_get_free_blocks2(fs, goal, end,
 399                                                  fs->inode_blocks_per_group,
 400                                                  fs->block_map, &goal);
 401                 if (retval)
 402                         return retval;
 403                 ext2fs_block_alloc_stats_range(fs, goal,
 404                                                fs->inode_blocks_per_group, +1);
 405                 ext2fs_inode_table_loc_set(fs, i, goal);
 406                 ext2fs_group_desc_csum_set(fs, i);
 407         }
 408         return 0;
 409 }
 410
 411 static void write_inode_tables(ext2_filsys fs, int lazy_flag, int itable_zeroed)
 412 {
 413         errcode_t       retval;
 414         blk64_t         blk;
 415         dgrp_t          i;
 416         int             num;
 417         struct ext2fs_numeric_progress_struct progress;
 418
 419         ext2fs_numeric_progress_init(fs, &progress,
 420                                      _("Writing inode tables: "),
 421                                      fs->group_desc_count);
 422
 423         for (i = 0; i < fs->group_desc_count; i++) {
 424                 ext2fs_numeric_progress_update(fs, &progress, i);
 425
 426                 blk = ext2fs_inode_table_loc(fs, i);
 427                 num = fs->inode_blocks_per_group;
 428
 429                 if (lazy_flag)
 430                         num = ext2fs_div_ceil((fs->super->s_inodes_per_group -
 431                                                ext2fs_bg_itable_unused(fs, i)) *
 432                                               EXT2_INODE_SIZE(fs->super),
 433                                               EXT2_BLOCK_SIZE(fs->super));
 434                 if (!lazy_flag || itable_zeroed) {
 435                         /* The kernel doesn't need to zero the itable blocks */
 436                         ext2fs_bg_flags_set(fs, i, EXT2_BG_INODE_ZEROED);
 437                         ext2fs_group_desc_csum_set(fs, i);
 438                 }
 439                 if (!itable_zeroed) {
 440                         retval = ext2fs_zero_blocks2(fs, blk, num, &blk, &num);
 441                         if (retval) {
 442                                 fprintf(stderr, _("\nCould not write %d "
 443                                           "blocks in inode table starting at %llu: %s\n"),
 444                                         num, blk, error_message(retval));
 445                                 exit(1);
 446                         }
 447                 }
 448                 if (sync_kludge) {
 449                         if (sync_kludge == 1)
 450                                 io_channel_flush(fs->io);
 451                         else if ((i % sync_kludge) == 0)
 452                                 io_channel_flush(fs->io);
 453                 }
 454         }
 455         ext2fs_numeric_progress_close(fs, &progress,
 456                                       _("done                            \n"));
 457
 458         /* Reserved inodes must always have correct checksums */
 459         if (ext2fs_has_feature_metadata_csum(fs->super))
 460                 write_reserved_inodes(fs);
 461 }
 462
 463 static void create_root_dir(ext2_filsys fs)
 464 {
 465         errcode_t               retval;
 466         struct ext2_inode       inode;
 467
 468         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0);
 469         if (retval) {
 470                 com_err("ext2fs_mkdir", retval, "%s",
 471                         _("while creating root dir"));
 472                 exit(1);
 473         }
 474         if (root_uid != 0 || root_gid != 0) {
 475                 retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode);
 476                 if (retval) {
 477                         com_err("ext2fs_read_inode", retval, "%s",
 478                                 _("while reading root inode"));
 479                         exit(1);
 480                 }
 481
 482                 inode.i_uid = root_uid;
 483                 ext2fs_set_i_uid_high(inode, root_uid >> 16);
 484                 inode.i_gid = root_gid;
 485                 ext2fs_set_i_gid_high(inode, root_gid >> 16);
 486
 487                 retval = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode);
 488                 if (retval) {
 489                         com_err("ext2fs_write_inode", retval, "%s",
 490                                 _("while setting root inode ownership"));
 491                         exit(1);
 492                 }
 493         }
 494 }
 495
 496 static void create_lost_and_found(ext2_filsys fs)
 497 {
 498         unsigned int            lpf_size = 0;
 499         errcode_t               retval;
 500         ext2_ino_t              ino;
 501         const char              *name = "lost+found";
 502         int                     i;
 503
 504         fs->umask = 077;
 505         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name);
 506         if (retval) {
 507                 com_err("ext2fs_mkdir", retval, "%s",
 508                         _("while creating /lost+found"));
 509                 exit(1);
 510         }
 511
 512         retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
 513         if (retval) {
 514                 com_err("ext2_lookup", retval, "%s",
 515                         _("while looking up /lost+found"));
 516                 exit(1);
 517         }
 518
 519         for (i=1; i < EXT2_NDIR_BLOCKS; i++) {
 520                 /* Ensure that lost+found is at least 2 blocks, so we always
 521                  * test large empty blocks for big-block filesystems.  */
 522                 if ((lpf_size += fs->blocksize) >= 16*1024 &&
 523                     lpf_size >= 2 * fs->blocksize)
 524                         break;
 525                 retval = ext2fs_expand_dir(fs, ino);
 526                 if (retval) {
 527                         com_err("ext2fs_expand_dir", retval, "%s",
 528                                 _("while expanding /lost+found"));
 529                         exit(1);
 530                 }
 531         }
 532 }
 533
 534 static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list)
 535 {
 536         errcode_t       retval;
 537
 538         ext2fs_mark_inode_bitmap2(fs->inode_map, EXT2_BAD_INO);
 539         ext2fs_inode_alloc_stats2(fs, EXT2_BAD_INO, +1, 0);
 540         retval = ext2fs_update_bb_inode(fs, bb_list);
 541         if (retval) {
 542                 com_err("ext2fs_update_bb_inode", retval, "%s",
 543                         _("while setting bad block inode"));
 544                 exit(1);
 545         }
 546
 547 }
 548
 549 static void reserve_inodes(ext2_filsys fs)
 550 {
 551         ext2_ino_t      i;
 552
 553         for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++)
 554                 ext2fs_inode_alloc_stats2(fs, i, +1, 0);
 555         ext2fs_mark_ib_dirty(fs);
 556 }
 557
 558 #define BSD_DISKMAGIC   (0x82564557UL)  /* The disk magic number */
 559 #define BSD_MAGICDISK   (0x57455682UL)  /* The disk magic number reversed */
 560 #define BSD_LABEL_OFFSET        64
 561
 562 static void zap_sector(ext2_filsys fs, int sect, int nsect)
 563 {
 564         char *buf;
 565         int retval;
 566         unsigned int *magic;
 567
 568         buf = calloc(512, nsect);
 569         if (!buf) {
 570                 printf(_("Out of memory erasing sectors %d-%d\n"),
 571                        sect, sect + nsect - 1);
 572                 exit(1);
 573         }
 574
 575         if (sect == 0) {
 576                 /* Check for a BSD disklabel, and don't erase it if so */
 577                 retval = io_channel_read_blk64(fs->io, 0, -512, buf);
 578                 if (retval)
 579                         fprintf(stderr,
 580                                 _("Warning: could not read block 0: %s\n"),
 581                                 error_message(retval));
 582                 else {
 583                         magic = (unsigned int *) (buf + BSD_LABEL_OFFSET);
 584                         if ((*magic == BSD_DISKMAGIC) ||
 585                             (*magic == BSD_MAGICDISK))
 586                                 return;
 587                 }
 588         }
 589
 590         memset(buf, 0, 512*nsect);
 591         io_channel_set_blksize(fs->io, 512);
 592         retval = io_channel_write_blk64(fs->io, sect, -512*nsect, buf);
 593         io_channel_set_blksize(fs->io, fs->blocksize);
 594         free(buf);
 595         if (retval)
 596                 fprintf(stderr, _("Warning: could not erase sector %d: %s\n"),
 597                         sect, error_message(retval));
 598 }
 599
 600 static void create_journal_dev(ext2_filsys fs)
 601 {
 602         struct ext2fs_numeric_progress_struct progress;
 603         errcode_t               retval;
 604         char                    *buf;
 605         blk64_t                 blk, err_blk;
 606         int                     c, count, err_count;
 607
 608         retval = ext2fs_create_journal_superblock(fs,
 609                                   ext2fs_blocks_count(fs->super), 0, &buf);
 610         if (retval) {
 611                 com_err("create_journal_dev", retval, "%s",
 612                         _("while initializing journal superblock"));
 613                 exit(1);
 614         }
 615
 616         if (journal_flags & EXT2_MKJOURNAL_LAZYINIT)
 617                 goto write_superblock;
 618
 619         ext2fs_numeric_progress_init(fs, &progress,
 620                                      _("Zeroing journal device: "),
 621                                      ext2fs_blocks_count(fs->super));
 622         blk = 0;
 623         count = ext2fs_blocks_count(fs->super);
 624         while (count > 0) {
 625                 if (count > 1024)
 626                         c = 1024;
 627                 else
 628                         c = count;
 629                 retval = ext2fs_zero_blocks2(fs, blk, c, &err_blk, &err_count);
 630                 if (retval) {
 631                         com_err("create_journal_dev", retval,
 632                                 _("while zeroing journal device "
 633                                   "(block %llu, count %d)"),
 634                                 err_blk, err_count);
 635                         exit(1);
 636                 }
 637                 blk += c;
 638                 count -= c;
 639                 ext2fs_numeric_progress_update(fs, &progress, blk);
 640         }
 641
 642         ext2fs_numeric_progress_close(fs, &progress, NULL);
 643 write_superblock:
 644         retval = io_channel_write_blk64(fs->io,
 645                                         fs->super->s_first_data_block+1,
 646                                         1, buf);
 647         (void) ext2fs_free_mem(&buf);
 648         if (retval) {
 649                 com_err("create_journal_dev", retval, "%s",
 650                         _("while writing journal superblock"));
 651                 exit(1);
 652         }
 653 }
 654
 655 static void show_stats(ext2_filsys fs)
 656 {
 657         struct ext2_super_block *s = fs->super;
 658         char                    buf[80];
 659         char                    *os;
 660         blk64_t                 group_block;
 661         dgrp_t                  i;
 662         int                     need, col_left;
 663
 664         if (!verbose) {
 665                 printf(_("Creating filesystem with %llu %dk blocks and "
 666                          "%u inodes\n"),
 667                        ext2fs_blocks_count(s), fs->blocksize >> 10,
 668                        s->s_inodes_count);
 669                 goto skip_details;
 670         }
 671
 672         if (ext2fs_blocks_count(&fs_param) != ext2fs_blocks_count(s))
 673                 fprintf(stderr, _("warning: %llu blocks unused.\n\n"),
 674                        ext2fs_blocks_count(&fs_param) - ext2fs_blocks_count(s));
 675
 676         memset(buf, 0, sizeof(buf));
 677         strncpy(buf, s->s_volume_name, sizeof(s->s_volume_name));
 678         printf(_("Filesystem label=%s\n"), buf);
 679         os = e2p_os2string(fs->super->s_creator_os);
 680         if (os)
 681                 printf(_("OS type: %s\n"), os);
 682         free(os);
 683         printf(_("Block size=%u (log=%u)\n"), fs->blocksize,
 684                 s->s_log_block_size);
 685         if (ext2fs_has_feature_bigalloc(fs->super))
 686                 printf(_("Cluster size=%u (log=%u)\n"),
 687                        fs->blocksize << fs->cluster_ratio_bits,
 688                        s->s_log_cluster_size);
 689         else
 690                 printf(_("Fragment size=%u (log=%u)\n"), EXT2_CLUSTER_SIZE(s),
 691                        s->s_log_cluster_size);
 692         printf(_("Stride=%u blocks, Stripe width=%u blocks\n"),
 693                s->s_raid_stride, s->s_raid_stripe_width);
 694         printf(_("%u inodes, %llu blocks\n"), s->s_inodes_count,
 695                ext2fs_blocks_count(s));
 696         printf(_("%llu blocks (%2.2f%%) reserved for the super user\n"),
 697                 ext2fs_r_blocks_count(s),
 698                100.0 *  ext2fs_r_blocks_count(s) / ext2fs_blocks_count(s));
 699         printf(_("First data block=%u\n"), s->s_first_data_block);
 700         if (root_uid != 0 || root_gid != 0)
 701                 printf(_("Root directory owner=%u:%u\n"), root_uid, root_gid);
 702         if (s->s_reserved_gdt_blocks)
 703                 printf(_("Maximum filesystem blocks=%lu\n"),
 704                        (s->s_reserved_gdt_blocks + fs->desc_blocks) *
 705                        EXT2_DESC_PER_BLOCK(s) * s->s_blocks_per_group);
 706         if (fs->group_desc_count > 1)
 707                 printf(_("%u block groups\n"), fs->group_desc_count);
 708         else
 709                 printf(_("%u block group\n"), fs->group_desc_count);
 710         if (ext2fs_has_feature_bigalloc(fs->super))
 711                 printf(_("%u blocks per group, %u clusters per group\n"),
 712                        s->s_blocks_per_group, s->s_clusters_per_group);
 713         else
 714                 printf(_("%u blocks per group, %u fragments per group\n"),
 715                        s->s_blocks_per_group, s->s_clusters_per_group);
 716         printf(_("%u inodes per group\n"), s->s_inodes_per_group);
 717
 718 skip_details:
 719         if (fs->group_desc_count == 1) {
 720                 printf("\n");
 721                 return;
 722         }
 723
 724         if (!e2p_is_null_uuid(s->s_uuid))
 725                 printf(_("Filesystem UUID: %s\n"), e2p_uuid2str(s->s_uuid));
 726         printf("%s", _("Superblock backups stored on blocks: "));
 727         group_block = s->s_first_data_block;
 728         col_left = 0;
 729         for (i = 1; i < fs->group_desc_count; i++) {
 730                 group_block += s->s_blocks_per_group;
 731                 if (!ext2fs_bg_has_super(fs, i))
 732                         continue;
 733                 if (i != 1)
 734                         printf(", ");
 735                 need = int_log10(group_block) + 2;
 736                 if (need > col_left) {
 737                         printf("\n\t");
 738                         col_left = 72;
 739                 }
 740                 col_left -= need;
 741                 printf("%llu", group_block);
 742         }
 743         printf("\n\n");
 744 }
 745
 746 /*
 747  * Returns true if making a file system for the Hurd, else 0
 748  */
 749 static int for_hurd(const char *os)
 750 {
 751         if (!os) {
 752 #ifdef __GNU__
 753                 return 1;
 754 #else
 755                 return 0;
 756 #endif
 757         }
 758         if (isdigit(*os))
 759                 return (atoi(os) == EXT2_OS_HURD);
 760         return (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0);
 761 }
 762
 763 /*
 764  * Set the S_CREATOR_OS field.  Return true if OS is known,
 765  * otherwise, 0.
 766  */
 767 static int set_os(struct ext2_super_block *sb, char *os)
 768 {
 769         if (isdigit (*os))
 770                 sb->s_creator_os = atoi (os);
 771         else if (strcasecmp(os, "linux") == 0)
 772                 sb->s_creator_os = EXT2_OS_LINUX;
 773         else if (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0)
 774                 sb->s_creator_os = EXT2_OS_HURD;
 775         else if (strcasecmp(os, "freebsd") == 0)
 776                 sb->s_creator_os = EXT2_OS_FREEBSD;
 777         else if (strcasecmp(os, "lites") == 0)
 778                 sb->s_creator_os = EXT2_OS_LITES;
 779         else
 780                 return 0;
 781         return 1;
 782 }
 783
 784 #define PATH_SET "PATH=/sbin"
 785
 786 static void parse_extended_opts(struct ext2_super_block *param,
 787                                 const char *opts)
 788 {
 789         char    *buf, *token, *next, *p, *arg, *badopt = 0;
 790         int     len;
 791         int     r_usage = 0;
 792         int     ret;
 793         int     encoding = -1;
 794         char    *encoding_flags = NULL;
 795
 796         len = strlen(opts);
 797         buf = malloc(len+1);
 798         if (!buf) {
 799                 fprintf(stderr, "%s",
 800                         _("Couldn't allocate memory to parse options!\n"));
 801                 exit(1);
 802         }
 803         strcpy(buf, opts);
 804         for (token = buf; token && *token; token = next) {
 805                 p = strchr(token, ',');
 806                 next = 0;
 807                 if (p) {
 808                         *p = 0;
 809                         next = p+1;
 810                 }
 811                 arg = strchr(token, '=');
 812                 if (arg) {
 813                         *arg = 0;
 814                         arg++;
 815                 }
 816                 if (strcmp(token, "desc-size") == 0 ||
 817                     strcmp(token, "desc_size") == 0) {
 818                         int desc_size;
 819
 820                         if (!ext2fs_has_feature_64bit(&fs_param)) {
 821                                 fprintf(stderr,
 822                                         _("%s requires '-O 64bit'\n"), token);
 823                                 r_usage++;
 824                                 continue;
 825                         }
 826                         if (param->s_reserved_gdt_blocks != 0) {
 827                                 fprintf(stderr,
 828                                         _("'%s' must be before 'resize=%u'\n"),
 829                                         token, param->s_reserved_gdt_blocks);
 830                                 r_usage++;
 831                                 continue;
 832                         }
 833                         if (!arg) {
 834                                 r_usage++;
 835                                 badopt = token;
 836                                 continue;
 837                         }
 838                         desc_size = strtoul(arg, &p, 0);
 839                         if (*p || (desc_size & (desc_size - 1))) {
 840                                 fprintf(stderr,
 841                                         _("Invalid desc_size: '%s'\n"), arg);
 842                                 r_usage++;
 843                                 continue;
 844                         }
 845                         param->s_desc_size = desc_size;
 846                 } else if (strcmp(token, "hash_seed") == 0) {
 847                         if (!arg) {
 848                                 r_usage++;
 849                                 badopt = token;
 850                                 continue;
 851                         }
 852                         if (uuid_parse(arg,
 853                                 (unsigned char *)param->s_hash_seed) != 0) {
 854                                 fprintf(stderr,
 855                                         _("Invalid hash seed: %s\n"), arg);
 856                                 r_usage++;
 857                                 continue;
 858                         }
 859                 } else if (strcmp(token, "offset") == 0) {
 860                         if (!arg) {
 861                                 r_usage++;
 862                                 badopt = token;
 863                                 continue;
 864                         }
 865                         offset = strtoull(arg, &p, 0);
 866                         if (*p) {
 867                                 fprintf(stderr, _("Invalid offset: %s\n"),
 868                                         arg);
 869                                 r_usage++;
 870                                 continue;
 871                         }
 872                 } else if (strcmp(token, "mmp_update_interval") == 0) {
 873                         if (!arg) {
 874                                 r_usage++;
 875                                 badopt = token;
 876                                 continue;
 877                         }
 878                         param->s_mmp_update_interval = strtoul(arg, &p, 0);
 879                         if (*p) {
 880                                 fprintf(stderr,
 881                                         _("Invalid mmp_update_interval: %s\n"),
 882                                         arg);
 883                                 r_usage++;
 884                                 continue;
 885                         }
 886                 } else if (strcmp(token, "no_copy_xattrs") == 0) {
 887                         no_copy_xattrs = 1;
 888                         continue;
 889                 } else if (strcmp(token, "num_backup_sb") == 0) {
 890                         if (!arg) {
 891                                 r_usage++;
 892                                 badopt = token;
 893                                 continue;
 894                         }
 895                         num_backups = strtoul(arg, &p, 0);
 896                         if (*p || num_backups > 2) {
 897                                 fprintf(stderr,
 898                                         _("Invalid # of backup "
 899                                           "superblocks: %s\n"),
 900                                         arg);
 901                                 r_usage++;
 902                                 continue;
 903                         }
 904                 } else if (strcmp(token, "packed_meta_blocks") == 0) {
 905                         if (arg)
 906                                 packed_meta_blocks = strtoul(arg, &p, 0);
 907                         else
 908                                 packed_meta_blocks = 1;
 909                         if (packed_meta_blocks)
 910                                 journal_location = 0;
 911                 } else if (strcmp(token, "stride") == 0) {
 912                         if (!arg) {
 913                                 r_usage++;
 914                                 badopt = token;
 915                                 continue;
 916                         }
 917                         param->s_raid_stride = strtoul(arg, &p, 0);
 918                         if (*p) {
 919                                 fprintf(stderr,
 920                                         _("Invalid stride parameter: %s\n"),
 921                                         arg);
 922                                 r_usage++;
 923                                 continue;
 924                         }
 925                 } else if (strcmp(token, "stripe-width") == 0 ||
 926                            strcmp(token, "stripe_width") == 0) {
 927                         if (!arg) {
 928                                 r_usage++;
 929                                 badopt = token;
 930                                 continue;
 931                         }
 932                         param->s_raid_stripe_width = strtoul(arg, &p, 0);
 933                         if (*p) {
 934                                 fprintf(stderr,
 935                                         _("Invalid stripe-width parameter: %s\n"),
 936                                         arg);
 937                                 r_usage++;
 938                                 continue;
 939                         }
 940                 } else if (!strcmp(token, "resize")) {
 941                         blk64_t resize;
 942                         unsigned long bpg, rsv_groups;
 943                         unsigned long group_desc_count, desc_blocks;
 944                         unsigned int gdpb, blocksize;
 945                         int rsv_gdb;
 946
 947                         if (!arg) {
 948                                 r_usage++;
 949                                 badopt = token;
 950                                 continue;
 951                         }
 952
 953                         resize = parse_num_blocks2(arg,
 954                                                    param->s_log_block_size);
 955
 956                         if (resize == 0) {
 957                                 fprintf(stderr,
 958                                         _("Invalid resize parameter: %s\n"),
 959                                         arg);
 960                                 r_usage++;
 961                                 continue;
 962                         }
 963                         if (resize <= ext2fs_blocks_count(param)) {
 964                                 fprintf(stderr, "%s",
 965                                         _("The resize maximum must be greater "
 966                                           "than the filesystem size.\n"));
 967                                 r_usage++;
 968                                 continue;
 969                         }
 970
 971                         blocksize = EXT2_BLOCK_SIZE(param);
 972                         bpg = param->s_blocks_per_group;
 973                         if (!bpg)
 974                                 bpg = blocksize * 8;
 975                         gdpb = EXT2_DESC_PER_BLOCK(param);
 976                         group_desc_count = (__u32) ext2fs_div64_ceil(
 977                                 ext2fs_blocks_count(param), bpg);
 978                         desc_blocks = (group_desc_count +
 979                                        gdpb - 1) / gdpb;
 980                         rsv_groups = ext2fs_div64_ceil(resize, bpg);
 981                         rsv_gdb = ext2fs_div_ceil(rsv_groups, gdpb) -
 982                                 desc_blocks;
 983                         if (rsv_gdb > (int) EXT2_ADDR_PER_BLOCK(param))
 984                                 rsv_gdb = EXT2_ADDR_PER_BLOCK(param);
 985
 986                         if (rsv_gdb > 0) {
 987                                 if (param->s_rev_level == EXT2_GOOD_OLD_REV) {
 988                                         fprintf(stderr, "%s",
 989         _("On-line resizing not supported with revision 0 filesystems\n"));
 990                                         free(buf);
 991                                         exit(1);
 992                                 }
 993                                 ext2fs_set_feature_resize_inode(param);
 994
 995                                 param->s_reserved_gdt_blocks = rsv_gdb;
 996                         }
 997                 } else if (!strcmp(token, "test_fs")) {
 998                         param->s_flags |= EXT2_FLAGS_TEST_FILESYS;
 999                 } else if (!strcmp(token, "lazy_itable_init")) {
1000                         if (arg)
1001                                 lazy_itable_init = strtoul(arg, &p, 0);
1002                         else
1003                                 lazy_itable_init = 1;
1004                 } else if (!strcmp(token, "lazy_journal_init")) {
1005                         if (arg)
1006                                 journal_flags |= strtoul(arg, &p, 0) ?
1007                                                 EXT2_MKJOURNAL_LAZYINIT : 0;
1008                         else
1009                                 journal_flags |= EXT2_MKJOURNAL_LAZYINIT;
1010                 } else if (!strcmp(token, "root_owner")) {
1011                         if (arg) {
1012                                 root_uid = strtoul(arg, &p, 0);
1013                                 if (*p != ':') {
1014                                         fprintf(stderr,
1015                                                 _("Invalid root_owner: '%s'\n"),
1016                                                 arg);
1017                                         r_usage++;
1018                                         continue;
1019                                 }
1020                                 p++;
1021                                 root_gid = strtoul(p, &p, 0);
1022                                 if (*p) {
1023                                         fprintf(stderr,
1024                                                 _("Invalid root_owner: '%s'\n"),
1025                                                 arg);
1026                                         r_usage++;
1027                                         continue;
1028                                 }
1029                         } else {
1030                                 root_uid = getuid();
1031                                 root_gid = getgid();
1032                         }
1033                 } else if (!strcmp(token, "discard")) {
1034                         discard = 1;
1035                 } else if (!strcmp(token, "nodiscard")) {
1036                         discard = 0;
1037                 } else if (!strcmp(token, "quotatype")) {
1038                         char *errtok = NULL;
1039
1040                         if (!arg) {
1041                                 r_usage++;
1042                                 badopt = token;
1043                                 continue;
1044                         }
1045                         quotatype_bits = 0;
1046                         ret = parse_quota_types(arg, &quotatype_bits, &errtok);
1047                         if (ret) {
1048                                 if (errtok) {
1049                                         fprintf(stderr,
1050                                 "Failed to parse quota type at %s", errtok);
1051                                         free(errtok);
1052                                 } else
1053                                         com_err(program_name, ret,
1054                                                 "while parsing quota type");
1055                                 r_usage++;
1056                                 badopt = token;
1057                                 continue;
1058                         }
1059                 } else if (!strcmp(token, "android_sparse")) {
1060                         android_sparse_file = 1;
1061                 } else if (!strcmp(token, "encoding")) {
1062                         if (!arg) {
1063                                 r_usage++;
1064                                 continue;
1065                         }
1066
1067                         encoding = e2p_str2encoding(arg);
1068                         if (encoding < 0) {
1069                                 fprintf(stderr, _("Invalid encoding: %s"), arg);
1070                                 r_usage++;
1071                                 continue;
1072                         }
1073                         param->s_encoding = encoding;
1074                         ext2fs_set_feature_casefold(param);
1075                 } else if (!strcmp(token, "encoding_flags")) {
1076                         if (!arg) {
1077                                 r_usage++;
1078                                 continue;
1079                         }
1080                         encoding_flags = arg;
1081                 } else {
1082                         r_usage++;
1083                         badopt = token;
1084                 }
1085         }
1086         if (r_usage) {
1087                 fprintf(stderr, _("\nBad option(s) specified: %s\n\n"
1088                         "Extended options are separated by commas, "
1089                         "and may take an argument which\n"
1090                         "\tis set off by an equals ('=') sign.\n\n"
1091                         "Valid extended options are:\n"
1092                         "\tmmp_update_interval=<interval>\n"
1093                         "\tnum_backup_sb=<0|1|2>\n"
1094                         "\tstride=<RAID per-disk data chunk in blocks>\n"
1095                         "\tstripe-width=<RAID stride * data disks in blocks>\n"
1096                         "\toffset=<offset to create the file system>\n"
1097                         "\tresize=<resize maximum size in blocks>\n"
1098                         "\tpacked_meta_blocks=<0 to disable, 1 to enable>\n"
1099                         "\tlazy_itable_init=<0 to disable, 1 to enable>\n"
1100                         "\tlazy_journal_init=<0 to disable, 1 to enable>\n"
1101                         "\troot_owner=<uid of root dir>:<gid of root dir>\n"
1102                         "\ttest_fs\n"
1103                         "\tdiscard\n"
1104                         "\tnodiscard\n"
1105                         "\tencoding=<encoding>\n"
1106                         "\tencoding_flags=<flags>\n"
1107                         "\tquotatype=<quota type(s) to be enabled>\n\n"),
1108                         badopt ? badopt : "");
1109                 free(buf);
1110                 exit(1);
1111         }
1112         if (param->s_raid_stride &&
1113             (param->s_raid_stripe_width % param->s_raid_stride) != 0)
1114                 fprintf(stderr, _("\nWarning: RAID stripe-width %u not an even "
1115                                   "multiple of stride %u.\n\n"),
1116                         param->s_raid_stripe_width, param->s_raid_stride);
1117
1118         if (ext2fs_has_feature_casefold(param)) {
1119                 param->s_encoding_flags =
1120                         e2p_get_encoding_flags(param->s_encoding);
1121
1122                 if (encoding_flags &&
1123                     e2p_str2encoding_flags(param->s_encoding, encoding_flags,
1124                                            &param->s_encoding_flags)) {
1125                         fprintf(stderr, _("error: Invalid encoding flag: %s\n"),
1126                                 encoding_flags);
1127                         free(buf);
1128                         exit(1);
1129                 }
1130         } else if (encoding_flags) {
1131                 fprintf(stderr, _("error: An encoding must be explicitly "
1132                                   "specified when passing encoding-flags\n"));
1133                 free(buf);
1134                 exit(1);
1135         }
1136
1137         free(buf);
1138 }
1139
1140 static __u32 ok_features[3] = {
1141         /* Compat */
1142         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
1143                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
1144                 EXT2_FEATURE_COMPAT_DIR_INDEX |
1145                 EXT2_FEATURE_COMPAT_EXT_ATTR |
1146                 EXT4_FEATURE_COMPAT_SPARSE_SUPER2 |
1147                 EXT4_FEATURE_COMPAT_FAST_COMMIT,
1148         /* Incompat */
1149         EXT2_FEATURE_INCOMPAT_FILETYPE|
1150                 EXT3_FEATURE_INCOMPAT_EXTENTS|
1151                 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|
1152                 EXT2_FEATURE_INCOMPAT_META_BG|
1153                 EXT4_FEATURE_INCOMPAT_FLEX_BG|
1154                 EXT4_FEATURE_INCOMPAT_EA_INODE|
1155                 EXT4_FEATURE_INCOMPAT_MMP |
1156                 EXT4_FEATURE_INCOMPAT_64BIT|
1157                 EXT4_FEATURE_INCOMPAT_INLINE_DATA|
1158                 EXT4_FEATURE_INCOMPAT_ENCRYPT |
1159                 EXT4_FEATURE_INCOMPAT_CASEFOLD |
1160                 EXT4_FEATURE_INCOMPAT_CSUM_SEED |
1161                 EXT4_FEATURE_INCOMPAT_LARGEDIR,
1162         /* R/O compat */
1163         EXT2_FEATURE_RO_COMPAT_LARGE_FILE|
1164                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
1165                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
1166                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
1167                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|
1168                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|
1169                 EXT4_FEATURE_RO_COMPAT_BIGALLOC|
1170                 EXT4_FEATURE_RO_COMPAT_QUOTA|
1171                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|
1172                 EXT4_FEATURE_RO_COMPAT_PROJECT|
1173                 EXT4_FEATURE_RO_COMPAT_VERITY
1174 };
1175
1176
1177 static void syntax_err_report(const char *filename, long err, int line_num)
1178 {
1179         fprintf(stderr,
1180                 _("Syntax error in mke2fs config file (%s, line #%d)\n\t%s\n"),
1181                 filename, line_num, error_message(err));
1182         exit(1);
1183 }
1184
1185 static const char *config_fn[] = { ROOT_SYSCONFDIR "/mke2fs.conf", 0 };
1186
1187 static void edit_feature(const char *str, __u32 *compat_array)
1188 {
1189         if (!str)
1190                 return;
1191
1192         if (e2p_edit_feature(str, compat_array, ok_features)) {
1193                 fprintf(stderr, _("Invalid filesystem option set: %s\n"),
1194                         str);
1195                 exit(1);
1196         }
1197 }
1198
1199 static void edit_mntopts(const char *str, __u32 *mntopts)
1200 {
1201         if (!str)
1202                 return;
1203
1204         if (e2p_edit_mntopts(str, mntopts, ~0)) {
1205                 fprintf(stderr, _("Invalid mount option set: %s\n"),
1206                         str);
1207                 exit(1);
1208         }
1209 }
1210
1211 struct str_list {
1212         char **list;
1213         int num;
1214         int max;
1215 };
1216
1217 static errcode_t init_list(struct str_list *sl)
1218 {
1219         sl->num = 0;
1220         sl->max = 1;
1221         sl->list = malloc((sl->max+1) * sizeof(char *));
1222         if (!sl->list)
1223                 return ENOMEM;
1224         sl->list[0] = 0;
1225         return 0;
1226 }
1227
1228 static errcode_t push_string(struct str_list *sl, const char *str)
1229 {
1230         char **new_list;
1231
1232         if (sl->num >= sl->max) {
1233                 sl->max += 2;
1234                 new_list = realloc(sl->list, (sl->max+1) * sizeof(char *));
1235                 if (!new_list)
1236                         return ENOMEM;
1237                 sl->list = new_list;
1238         }
1239         sl->list[sl->num] = malloc(strlen(str)+1);
1240         if (sl->list[sl->num] == 0)
1241                 return ENOMEM;
1242         strcpy(sl->list[sl->num], str);
1243         sl->num++;
1244         sl->list[sl->num] = 0;
1245         return 0;
1246 }
1247
1248 static void print_str_list(char **list)
1249 {
1250         char **cpp;
1251
1252         for (cpp = list; *cpp; cpp++) {
1253                 printf("'%s'", *cpp);
1254                 if (cpp[1])
1255                         fputs(", ", stdout);
1256         }
1257         fputc('\n', stdout);
1258 }
1259
1260 /*
1261  * Return TRUE if the profile has the given subsection
1262  */
1263 static int profile_has_subsection(profile_t prof, const char *section,
1264                                   const char *subsection)
1265 {
1266         void                    *state;
1267         const char              *names[4];
1268         char                    *name;
1269         int                     ret = 0;
1270
1271         names[0] = section;
1272         names[1] = subsection;
1273         names[2] = 0;
1274
1275         if (profile_iterator_create(prof, names,
1276                                     PROFILE_ITER_LIST_SECTION |
1277                                     PROFILE_ITER_RELATIONS_ONLY, &state))
1278                 return 0;
1279
1280         if ((profile_iterator(&state, &name, 0) == 0) && name) {
1281                 free(name);
1282                 ret = 1;
1283         }
1284
1285         profile_iterator_free(&state);
1286         return ret;
1287 }
1288
1289 static char **parse_fs_type(const char *fs_type,
1290                             const char *usage_types,
1291                             struct ext2_super_block *sb,
1292                             blk64_t fs_blocks_count,
1293                             char *progname)
1294 {
1295         const char      *ext_type = 0;
1296         char            *parse_str;
1297         char            *profile_type = 0;
1298         char            *cp, *t;
1299         const char      *size_type;
1300         struct str_list list;
1301         unsigned long long meg;
1302         int             is_hurd = for_hurd(creator_os);
1303
1304         if (init_list(&list))
1305                 return 0;
1306
1307         if (fs_type)
1308                 ext_type = fs_type;
1309         else if (is_hurd)
1310                 ext_type = "ext2";
1311         else if (!strcmp(program_name, "mke3fs"))
1312                 ext_type = "ext3";
1313         else if (!strcmp(program_name, "mke4fs"))
1314                 ext_type = "ext4";
1315         else if (progname) {
1316                 ext_type = strrchr(progname, '/');
1317                 if (ext_type)
1318                         ext_type++;
1319                 else
1320                         ext_type = progname;
1321
1322                 if (!strncmp(ext_type, "mkfs.", 5)) {
1323                         ext_type += 5;
1324                         if (ext_type[0] == 0)
1325                                 ext_type = 0;
1326                 } else
1327                         ext_type = 0;
1328         }
1329
1330         if (!ext_type) {
1331                 profile_get_string(profile, "defaults", "fs_type", 0,
1332                                    "ext2", &profile_type);
1333                 ext_type = profile_type;
1334                 if (!strcmp(ext_type, "ext2") && (journal_size != 0))
1335                         ext_type = "ext3";
1336         }
1337
1338
1339         if (!profile_has_subsection(profile, "fs_types", ext_type) &&
1340             strcmp(ext_type, "ext2")) {
1341                 printf(_("\nYour mke2fs.conf file does not define the "
1342                          "%s filesystem type.\n"), ext_type);
1343                 if (!strcmp(ext_type, "ext3") || !strcmp(ext_type, "ext4") ||
1344                     !strcmp(ext_type, "ext4dev")) {
1345                         printf("%s", _("You probably need to install an "
1346                                        "updated mke2fs.conf file.\n\n"));
1347                 }
1348                 if (!force) {
1349                         printf("%s", _("Aborting...\n"));
1350                         exit(1);
1351                 }
1352         }
1353
1354         meg = (1024 * 1024) / EXT2_BLOCK_SIZE(sb);
1355         if (fs_blocks_count < 3 * meg)
1356                 size_type = "floppy";
1357         else if (fs_blocks_count < 512 * meg)
1358                 size_type = "small";
1359         else if (fs_blocks_count < 4 * 1024 * 1024 * meg)
1360                 size_type = "default";
1361         else if (fs_blocks_count < 16 * 1024 * 1024 * meg)
1362                 size_type = "big";
1363         else
1364                 size_type = "huge";
1365
1366         if (!usage_types)
1367                 usage_types = size_type;
1368
1369         parse_str = malloc(strlen(usage_types)+1);
1370         if (!parse_str) {
1371                 free(profile_type);
1372                 free(list.list);
1373                 return 0;
1374         }
1375         strcpy(parse_str, usage_types);
1376
1377         if (ext_type)
1378                 push_string(&list, ext_type);
1379         cp = parse_str;
1380         while (1) {
1381                 t = strchr(cp, ',');
1382                 if (t)
1383                         *t = '\0';
1384
1385                 if (*cp) {
1386                         if (profile_has_subsection(profile, "fs_types", cp))
1387                                 push_string(&list, cp);
1388                         else if (strcmp(cp, "default") != 0)
1389                                 fprintf(stderr,
1390                                         _("\nWarning: the fs_type %s is not "
1391                                           "defined in mke2fs.conf\n\n"),
1392                                         cp);
1393                 }
1394                 if (t)
1395                         cp = t+1;
1396                 else
1397                         break;
1398         }
1399         free(parse_str);
1400         free(profile_type);
1401         if (is_hurd)
1402                 push_string(&list, "hurd");
1403         return (list.list);
1404 }
1405
1406 char *get_string_from_profile(char **types, const char *opt,
1407                                      const char *def_val)
1408 {
1409         char *ret = 0;
1410         int i;
1411
1412         for (i=0; types[i]; i++);
1413         for (i-=1; i >=0 ; i--) {
1414                 profile_get_string(profile, "fs_types", types[i],
1415                                    opt, 0, &ret);
1416                 if (ret)
1417                         return ret;
1418         }
1419         profile_get_string(profile, "defaults", opt, 0, def_val, &ret);
1420         return (ret);
1421 }
1422
1423 int get_int_from_profile(char **types, const char *opt, int def_val)
1424 {
1425         int ret;
1426         char **cpp;
1427
1428         profile_get_integer(profile, "defaults", opt, 0, def_val, &ret);
1429         for (cpp = types; *cpp; cpp++)
1430                 profile_get_integer(profile, "fs_types", *cpp, opt, ret, &ret);
1431         return ret;
1432 }
1433
1434 static unsigned int get_uint_from_profile(char **types, const char *opt,
1435                                         unsigned int def_val)
1436 {
1437         unsigned int ret;
1438         char **cpp;
1439
1440         profile_get_uint(profile, "defaults", opt, 0, def_val, &ret);
1441         for (cpp = types; *cpp; cpp++)
1442                 profile_get_uint(profile, "fs_types", *cpp, opt, ret, &ret);
1443         return ret;
1444 }
1445
1446 static double get_double_from_profile(char **types, const char *opt,
1447                                       double def_val)
1448 {
1449         double ret;
1450         char **cpp;
1451
1452         profile_get_double(profile, "defaults", opt, 0, def_val, &ret);
1453         for (cpp = types; *cpp; cpp++)
1454                 profile_get_double(profile, "fs_types", *cpp, opt, ret, &ret);
1455         return ret;
1456 }
1457
1458 int get_bool_from_profile(char **types, const char *opt, int def_val)
1459 {
1460         int ret;
1461         char **cpp;
1462
1463         profile_get_boolean(profile, "defaults", opt, 0, def_val, &ret);
1464         for (cpp = types; *cpp; cpp++)
1465                 profile_get_boolean(profile, "fs_types", *cpp, opt, ret, &ret);
1466         return ret;
1467 }
1468
1469 extern const char *mke2fs_default_profile;
1470 static const char *default_files[] = { "<default>", 0 };
1471
1472 #ifdef HAVE_BLKID_PROBE_GET_TOPOLOGY
1473 /*
1474  * Sets the geometry of a device (stripe/stride), and returns the
1475  * device's alignment offset, if any, or a negative error.
1476  */
1477 static int get_device_geometry(const char *file,
1478                                struct ext2_super_block *param,
1479                                unsigned int psector_size)
1480 {
1481         int rc = -1;
1482         unsigned int blocksize;
1483         blkid_probe pr;
1484         blkid_topology tp;
1485         unsigned long min_io;
1486         unsigned long opt_io;
1487         struct stat statbuf;
1488
1489         /* Nothing to do for a regular file */
1490         if (!stat(file, &statbuf) && S_ISREG(statbuf.st_mode))
1491                 return 0;
1492
1493         pr = blkid_new_probe_from_filename(file);
1494         if (!pr)
1495                 goto out;
1496
1497         tp = blkid_probe_get_topology(pr);
1498         if (!tp)
1499                 goto out;
1500
1501         min_io = blkid_topology_get_minimum_io_size(tp);
1502         opt_io = blkid_topology_get_optimal_io_size(tp);
1503         blocksize = EXT2_BLOCK_SIZE(param);
1504         if ((min_io == 0) && (psector_size > blocksize))
1505                 min_io = psector_size;
1506         if ((opt_io == 0) && min_io)
1507                 opt_io = min_io;
1508         if ((opt_io == 0) && (psector_size > blocksize))
1509                 opt_io = psector_size;
1510
1511         /* setting stripe/stride to blocksize is pointless */
1512         if (min_io > blocksize)
1513                 param->s_raid_stride = min_io / blocksize;
1514         if (opt_io > blocksize)
1515                 param->s_raid_stripe_width = opt_io / blocksize;
1516
1517         rc = blkid_topology_get_alignment_offset(tp);
1518 out:
1519         blkid_free_probe(pr);
1520         return rc;
1521 }
1522 #endif
1523
1524 static void PRS(int argc, char *argv[])
1525 {
1526         int             b, c, flags;
1527         int             cluster_size = 0;
1528         char            *tmp, **cpp;
1529         int             explicit_fssize = 0;
1530         int             blocksize = 0;
1531         int             inode_ratio = 0;
1532         int             inode_size = 0;
1533         unsigned long   flex_bg_size = 0;
1534         double          reserved_ratio = -1.0;
1535         int             lsector_size = 0, psector_size = 0;
1536         int             show_version_only = 0, is_device = 0;
1537         unsigned long long num_inodes = 0; /* unsigned long long to catch too-large input */
1538         errcode_t       retval;
1539         char *          oldpath = getenv("PATH");
1540         char *          extended_opts = 0;
1541         char *          fs_type = 0;
1542         char *          usage_types = 0;
1543         /*
1544          * NOTE: A few words about fs_blocks_count and blocksize:
1545          *
1546          * Initially, blocksize is set to zero, which implies 1024.
1547          * If -b is specified, blocksize is updated to the user's value.
1548          *
1549          * Next, the device size or the user's "blocks" command line argument
1550          * is used to set fs_blocks_count; the units are blocksize.
1551          *
1552          * Later, if blocksize hasn't been set and the profile specifies a
1553          * blocksize, then blocksize is updated and fs_blocks_count is scaled
1554          * appropriately.  Note the change in units!
1555          *
1556          * Finally, we complain about fs_blocks_count > 2^32 on a non-64bit fs.
1557          */
1558         blk64_t         fs_blocks_count = 0;
1559         long            sysval;
1560         int             s_opt = -1, r_opt = -1;
1561         char            *fs_features = 0;
1562         int             fs_features_size = 0;
1563         int             use_bsize;
1564         char            *newpath;
1565         int             pathlen = sizeof(PATH_SET) + 1;
1566
1567         if (oldpath)
1568                 pathlen += strlen(oldpath);
1569         newpath = malloc(pathlen);
1570         if (!newpath) {
1571                 fprintf(stderr, "%s",
1572                         _("Couldn't allocate memory for new PATH.\n"));
1573                 exit(1);
1574         }
1575         strcpy(newpath, PATH_SET);
1576
1577         /* Update our PATH to include /sbin  */
1578         if (oldpath) {
1579                 strcat (newpath, ":");
1580                 strcat (newpath, oldpath);
1581         }
1582         putenv (newpath);
1583
1584         /* Determine the system page size if possible */
1585 #ifdef HAVE_SYSCONF
1586 #if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE))
1587 #define _SC_PAGESIZE _SC_PAGE_SIZE
1588 #endif
1589 #ifdef _SC_PAGESIZE
1590         sysval = sysconf(_SC_PAGESIZE);
1591         if (sysval > 0)
1592                 sys_page_size = sysval;
1593 #endif /* _SC_PAGESIZE */
1594 #endif /* HAVE_SYSCONF */
1595
1596         if ((tmp = getenv("MKE2FS_CONFIG")) != NULL)
1597                 config_fn[0] = tmp;
1598         profile_set_syntax_err_cb(syntax_err_report);
1599         retval = profile_init(config_fn, &profile);
1600         if (retval == ENOENT) {
1601                 retval = profile_init(default_files, &profile);
1602                 if (retval)
1603                         goto profile_error;
1604                 retval = profile_set_default(profile, mke2fs_default_profile);
1605                 if (retval)
1606                         goto profile_error;
1607         } else if (retval) {
1608 profile_error:
1609                 fprintf(stderr, _("Couldn't init profile successfully"
1610                                   " (error: %ld).\n"), retval);
1611                 exit(1);
1612         }
1613
1614         setbuf(stdout, NULL);
1615         setbuf(stderr, NULL);
1616         add_error_table(&et_ext2_error_table);
1617         add_error_table(&et_prof_error_table);
1618         memset(&fs_param, 0, sizeof(struct ext2_super_block));
1619         fs_param.s_rev_level = 1;  /* Create revision 1 filesystems now */
1620
1621         if (is_before_linux_ver(2, 2, 0))
1622                 fs_param.s_rev_level = 0;
1623
1624         if (argc && *argv) {
1625                 program_name = get_progname(*argv);
1626
1627                 /* If called as mkfs.ext3, create a journal inode */
1628                 if (!strcmp(program_name, "mkfs.ext3") ||
1629                     !strcmp(program_name, "mke3fs"))
1630                         journal_size = -1;
1631         }
1632
1633         while ((c = getopt (argc, argv,
1634                     "b:cd:e:g:i:jl:m:no:qr:s:t:vC:DE:FG:I:J:KL:M:N:O:R:ST:U:Vz:")) != EOF) {
1635                 switch (c) {
1636                 case 'b':
1637                         blocksize = parse_num_blocks2(optarg, -1);
1638                         b = (blocksize > 0) ? blocksize : -blocksize;
1639                         if (b < EXT2_MIN_BLOCK_SIZE ||
1640                             b > EXT2_MAX_BLOCK_SIZE) {
1641                                 com_err(program_name, 0,
1642                                         _("invalid block size - %s"), optarg);
1643                                 exit(1);
1644                         }
1645                         if (blocksize > 4096)
1646                                 fprintf(stderr, _("Warning: blocksize %d not "
1647                                                   "usable on most systems.\n"),
1648                                         blocksize);
1649                         if (blocksize > 0)
1650                                 fs_param.s_log_block_size =
1651                                         int_log2(blocksize >>
1652                                                  EXT2_MIN_BLOCK_LOG_SIZE);
1653                         break;
1654                 case 'c':       /* Check for bad blocks */
1655                         cflag++;
1656                         break;
1657                 case 'C':
1658                         cluster_size = parse_num_blocks2(optarg, -1);
1659                         if (cluster_size <= EXT2_MIN_CLUSTER_SIZE ||
1660                             cluster_size > EXT2_MAX_CLUSTER_SIZE) {
1661                                 com_err(program_name, 0,
1662                                         _("invalid cluster size - %s"),
1663                                         optarg);
1664                                 exit(1);
1665                         }
1666                         break;
1667                 case 'd':
1668                         src_root_dir = optarg;
1669                         break;
1670                 case 'D':
1671                         direct_io = 1;
1672                         break;
1673                 case 'R':
1674                         com_err(program_name, 0, "%s",
1675                                 _("'-R' is deprecated, use '-E' instead"));
1676                         /* fallthrough */
1677                 case 'E':
1678                         extended_opts = optarg;
1679                         break;
1680                 case 'e':
1681                         if (strcmp(optarg, "continue") == 0)
1682                                 errors_behavior = EXT2_ERRORS_CONTINUE;
1683                         else if (strcmp(optarg, "remount-ro") == 0)
1684                                 errors_behavior = EXT2_ERRORS_RO;
1685                         else if (strcmp(optarg, "panic") == 0)
1686                                 errors_behavior = EXT2_ERRORS_PANIC;
1687                         else {
1688                                 com_err(program_name, 0,
1689                                         _("bad error behavior - %s"),
1690                                         optarg);
1691                                 usage();
1692                         }
1693                         break;
1694                 case 'F':
1695                         force++;
1696                         break;
1697                 case 'g':
1698                         fs_param.s_blocks_per_group = strtoul(optarg, &tmp, 0);
1699                         if (*tmp) {
1700                                 com_err(program_name, 0, "%s",
1701                                 _("Illegal number for blocks per group"));
1702                                 exit(1);
1703                         }
1704                         if ((fs_param.s_blocks_per_group % 8) != 0) {
1705                                 com_err(program_name, 0, "%s",
1706                                 _("blocks per group must be multiple of 8"));
1707                                 exit(1);
1708                         }
1709                         break;
1710                 case 'G':
1711                         flex_bg_size = strtoul(optarg, &tmp, 0);
1712                         if (*tmp) {
1713                                 com_err(program_name, 0, "%s",
1714                                         _("Illegal number for flex_bg size"));
1715                                 exit(1);
1716                         }
1717                         if (flex_bg_size < 1 ||
1718                             (flex_bg_size & (flex_bg_size-1)) != 0) {
1719                                 com_err(program_name, 0, "%s",
1720                                         _("flex_bg size must be a power of 2"));
1721                                 exit(1);
1722                         }
1723                         if (flex_bg_size > MAX_32_NUM) {
1724                                 com_err(program_name, 0,
1725                                 _("flex_bg size (%lu) must be less than"
1726                                 " or equal to 2^31"), flex_bg_size);
1727                                 exit(1);
1728                         }
1729                         break;
1730                 case 'i':
1731                         inode_ratio = parse_num_blocks(optarg, -1);
1732                         if (inode_ratio < EXT2_MIN_BLOCK_SIZE ||
1733                             inode_ratio > EXT2_MAX_BLOCK_SIZE * 1024) {
1734                                 com_err(program_name, 0,
1735                                         _("invalid inode ratio %s (min %d/max %d)"),
1736                                         optarg, EXT2_MIN_BLOCK_SIZE,
1737                                         EXT2_MAX_BLOCK_SIZE * 1024);
1738                                 exit(1);
1739                         }
1740                         break;
1741                 case 'I':
1742                         inode_size = strtoul(optarg, &tmp, 0);
1743                         if (*tmp) {
1744                                 com_err(program_name, 0,
1745                                         _("invalid inode size - %s"), optarg);
1746                                 exit(1);
1747                         }
1748                         break;
1749                 case 'j':
1750                         if (!journal_size)
1751                                 journal_size = -1;
1752                         break;
1753                 case 'J':
1754                         parse_journal_opts(optarg);
1755                         break;
1756                 case 'K':
1757                         fprintf(stderr, "%s",
1758                                 _("Warning: -K option is deprecated and "
1759                                   "should not be used anymore. Use "
1760                                   "\'-E nodiscard\' extended option "
1761                                   "instead!\n"));
1762                         discard = 0;
1763                         break;
1764                 case 'l':
1765                         bad_blocks_filename = realloc(bad_blocks_filename,
1766                                                       strlen(optarg) + 1);
1767                         if (!bad_blocks_filename) {
1768                                 com_err(program_name, ENOMEM, "%s",
1769                                         _("in malloc for bad_blocks_filename"));
1770                                 exit(1);
1771                         }
1772                         strcpy(bad_blocks_filename, optarg);
1773                         break;
1774                 case 'L':
1775                         volume_label = optarg;
1776                         if (strlen(volume_label) > EXT2_LABEL_LEN) {
1777                                 volume_label[EXT2_LABEL_LEN] = '\0';
1778                                 fprintf(stderr, _("Warning: label too long; will be truncated to '%s'\n\n"),
1779                                         volume_label);
1780                         }
1781                         break;
1782                 case 'm':
1783                         reserved_ratio = strtod(optarg, &tmp);
1784                         if ( *tmp || reserved_ratio > 50 ||
1785                              reserved_ratio < 0) {
1786                                 com_err(program_name, 0,
1787                                         _("invalid reserved blocks percent - %s"),
1788                                         optarg);
1789                                 exit(1);
1790                         }
1791                         break;
1792                 case 'M':
1793                         mount_dir = optarg;
1794                         break;
1795                 case 'n':
1796                         noaction++;
1797                         break;
1798                 case 'N':
1799                         num_inodes = strtoul(optarg, &tmp, 0);
1800                         if (*tmp) {
1801                                 com_err(program_name, 0,
1802                                         _("bad num inodes - %s"), optarg);
1803                                         exit(1);
1804                         }
1805                         break;
1806                 case 'o':
1807                         creator_os = optarg;
1808                         break;
1809                 case 'O':
1810                         retval = ext2fs_resize_mem(fs_features_size,
1811                                    fs_features_size + 1 + strlen(optarg),
1812                                                    &fs_features);
1813                         if (retval) {
1814                                 com_err(program_name, retval,
1815                                      _("while allocating fs_feature string"));
1816                                 exit(1);
1817                         }
1818                         if (fs_features_size)
1819                                 strcat(fs_features, ",");
1820                         else
1821                                 fs_features[0] = 0;
1822                         strcat(fs_features, optarg);
1823                         fs_features_size += 1 + strlen(optarg);
1824                         break;
1825                 case 'q':
1826                         quiet = 1;
1827                         break;
1828                 case 'r':
1829                         r_opt = strtoul(optarg, &tmp, 0);
1830                         if (*tmp) {
1831                                 com_err(program_name, 0,
1832                                         _("bad revision level - %s"), optarg);
1833                                 exit(1);
1834                         }
1835                         if (r_opt > EXT2_MAX_SUPP_REV) {
1836                                 com_err(program_name, EXT2_ET_REV_TOO_HIGH,
1837                                         _("while trying to create revision %d"), r_opt);
1838                                 exit(1);
1839                         }
1840                         fs_param.s_rev_level = r_opt;
1841                         break;
1842                 case 's':       /* deprecated */
1843                         s_opt = atoi(optarg);
1844                         break;
1845                 case 'S':
1846                         super_only = 1;
1847                         break;
1848                 case 't':
1849                         if (fs_type) {
1850                                 com_err(program_name, 0, "%s",
1851                                     _("The -t option may only be used once"));
1852                                 exit(1);
1853                         }
1854                         fs_type = strdup(optarg);
1855                         break;
1856                 case 'T':
1857                         if (usage_types) {
1858                                 com_err(program_name, 0, "%s",
1859                                     _("The -T option may only be used once"));
1860                                 exit(1);
1861                         }
1862                         usage_types = strdup(optarg);
1863                         break;
1864                 case 'U':
1865                         fs_uuid = optarg;
1866                         break;
1867                 case 'v':
1868                         verbose = 1;
1869                         break;
1870                 case 'V':
1871                         /* Print version number and exit */
1872                         show_version_only++;
1873                         break;
1874                 case 'z':
1875                         undo_file = optarg;
1876                         break;
1877                 default:
1878                         usage();
1879                 }
1880         }
1881         if ((optind == argc) && !show_version_only)
1882                 usage();
1883         device_name = argv[optind++];
1884
1885         if (!quiet || show_version_only)
1886                 fprintf (stderr, "mke2fs %s (%s)\n", E2FSPROGS_VERSION,
1887                          E2FSPROGS_DATE);
1888
1889         if (show_version_only) {
1890                 fprintf(stderr, _("\tUsing %s\n"),
1891                         error_message(EXT2_ET_BASE));
1892                 exit(0);
1893         }
1894
1895         /*
1896          * If there's no blocksize specified and there is a journal
1897          * device, use it to figure out the blocksize
1898          */
1899         if (blocksize <= 0 && journal_device) {
1900                 ext2_filsys     jfs;
1901                 io_manager      io_ptr;
1902
1903 #ifdef CONFIG_TESTIO_DEBUG
1904                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1905                         io_ptr = test_io_manager;
1906                         test_io_backing_manager = unix_io_manager;
1907                 } else
1908 #endif
1909                         io_ptr = unix_io_manager;
1910                 retval = ext2fs_open(journal_device,
1911                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1912                                      0, io_ptr, &jfs);
1913                 if (retval) {
1914                         com_err(program_name, retval,
1915                                 _("while trying to open journal device %s\n"),
1916                                 journal_device);
1917                         exit(1);
1918                 }
1919                 if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) {
1920                         com_err(program_name, 0,
1921                                 _("Journal dev blocksize (%d) smaller than "
1922                                   "minimum blocksize %d\n"), jfs->blocksize,
1923                                 -blocksize);
1924                         exit(1);
1925                 }
1926                 blocksize = jfs->blocksize;
1927                 printf(_("Using journal device's blocksize: %d\n"), blocksize);
1928                 fs_param.s_log_block_size =
1929                         int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
1930                 ext2fs_close_free(&jfs);
1931         }
1932
1933         if (optind < argc) {
1934                 fs_blocks_count = parse_num_blocks2(argv[optind++],
1935                                                    fs_param.s_log_block_size);
1936                 if (!fs_blocks_count) {
1937                         com_err(program_name, 0,
1938                                 _("invalid blocks '%s' on device '%s'"),
1939                                 argv[optind - 1], device_name);
1940                         exit(1);
1941                 }
1942         }
1943         if (optind < argc)
1944                 usage();
1945
1946         profile_get_integer(profile, "options", "sync_kludge", 0, 0,
1947                             &sync_kludge);
1948         tmp = getenv("MKE2FS_SYNC");
1949         if (tmp)
1950                 sync_kludge = atoi(tmp);
1951
1952         profile_get_integer(profile, "options", "proceed_delay", 0, 0,
1953                             &proceed_delay);
1954
1955         /* The isatty() test is so we don't break existing scripts */
1956         flags = CREATE_FILE;
1957         if (isatty(0) && isatty(1) && !offset)
1958                 flags |= CHECK_FS_EXIST;
1959         if (!quiet)
1960                 flags |= VERBOSE_CREATE;
1961         if (fs_blocks_count == 0)
1962                 flags |= NO_SIZE;
1963         else
1964                 explicit_fssize = 1;
1965         if (!check_plausibility(device_name, flags, &is_device) && !force)
1966                 proceed_question(proceed_delay);
1967
1968         check_mount(device_name, force, _("filesystem"));
1969
1970         /* Determine the size of the device (if possible) */
1971         if (noaction && fs_blocks_count) {
1972                 dev_size = fs_blocks_count;
1973                 retval = 0;
1974         } else
1975 #ifndef _WIN32
1976                 retval = ext2fs_get_device_size2(device_name,
1977                                                  EXT2_BLOCK_SIZE(&fs_param),
1978                                                  &dev_size);
1979 #else
1980                 retval = ext2fs_get_device_size(device_name,
1981                                                 EXT2_BLOCK_SIZE(&fs_param),
1982                                                 &dev_size);
1983 #endif
1984         if (retval && (retval != EXT2_ET_UNIMPLEMENTED)) {
1985                 com_err(program_name, retval, "%s",
1986                         _("while trying to determine filesystem size"));
1987                 exit(1);
1988         }
1989         if (!fs_blocks_count) {
1990                 if (retval == EXT2_ET_UNIMPLEMENTED) {
1991                         com_err(program_name, 0, "%s",
1992                                 _("Couldn't determine device size; you "
1993                                 "must specify\nthe size of the "
1994                                 "filesystem\n"));
1995                         exit(1);
1996                 } else {
1997                         if (dev_size == 0) {
1998                                 com_err(program_name, 0, "%s",
1999                                 _("Device size reported to be zero.  "
2000                                   "Invalid partition specified, or\n\t"
2001                                   "partition table wasn't reread "
2002                                   "after running fdisk, due to\n\t"
2003                                   "a modified partition being busy "
2004                                   "and in use.  You may need to reboot\n\t"
2005                                   "to re-read your partition table.\n"
2006                                   ));
2007                                 exit(1);
2008                         }
2009                         fs_blocks_count = dev_size;
2010                         if (sys_page_size > EXT2_BLOCK_SIZE(&fs_param))
2011                                 fs_blocks_count &= ~((blk64_t) ((sys_page_size /
2012                                              EXT2_BLOCK_SIZE(&fs_param))-1));
2013                 }
2014         } else if (!force && is_device && (fs_blocks_count > dev_size)) {
2015                 com_err(program_name, 0, "%s",
2016                         _("Filesystem larger than apparent device size."));
2017                 proceed_question(proceed_delay);
2018         }
2019
2020         if (!fs_type)
2021                 profile_get_string(profile, "devices", device_name,
2022                                    "fs_type", 0, &fs_type);
2023         if (!usage_types)
2024                 profile_get_string(profile, "devices", device_name,
2025                                    "usage_types", 0, &usage_types);
2026
2027         /*
2028          * We have the file system (or device) size, so we can now
2029          * determine the appropriate file system types so the fs can
2030          * be appropriately configured.
2031          */
2032         fs_types = parse_fs_type(fs_type, usage_types, &fs_param,
2033                                  fs_blocks_count ? fs_blocks_count : dev_size,
2034                                  argv[0]);
2035         if (!fs_types) {
2036                 fprintf(stderr, "%s", _("Failed to parse fs types list\n"));
2037                 exit(1);
2038         }
2039
2040         /* Figure out what features should be enabled */
2041
2042         tmp = NULL;
2043         if (fs_param.s_rev_level != EXT2_GOOD_OLD_REV) {
2044                 tmp = get_string_from_profile(fs_types, "base_features",
2045                       "sparse_super,large_file,filetype,resize_inode,dir_index");
2046                 edit_feature(tmp, &fs_param.s_feature_compat);
2047                 free(tmp);
2048
2049                 /* And which mount options as well */
2050                 tmp = get_string_from_profile(fs_types, "default_mntopts",
2051                                               "acl,user_xattr");
2052                 edit_mntopts(tmp, &fs_param.s_default_mount_opts);
2053                 if (tmp)
2054                         free(tmp);
2055
2056                 for (cpp = fs_types; *cpp; cpp++) {
2057                         tmp = NULL;
2058                         profile_get_string(profile, "fs_types", *cpp,
2059                                            "features", "", &tmp);
2060                         if (tmp && *tmp)
2061                                 edit_feature(tmp, &fs_param.s_feature_compat);
2062                         if (tmp)
2063                                 free(tmp);
2064                 }
2065                 tmp = get_string_from_profile(fs_types, "default_features",
2066                                               "");
2067         }
2068         /* Mask off features which aren't supported by the Hurd */
2069         if (for_hurd(creator_os)) {
2070                 ext2fs_clear_feature_filetype(&fs_param);
2071                 ext2fs_clear_feature_huge_file(&fs_param);
2072                 ext2fs_clear_feature_metadata_csum(&fs_param);
2073                 ext2fs_clear_feature_ea_inode(&fs_param);
2074                 ext2fs_clear_feature_casefold(&fs_param);
2075         }
2076         edit_feature(fs_features ? fs_features : tmp,
2077                      &fs_param.s_feature_compat);
2078         if (tmp)
2079                 free(tmp);
2080         (void) ext2fs_free_mem(&fs_features);
2081         /*
2082          * If the user specified features incompatible with the Hurd, complain
2083          */
2084         if (for_hurd(creator_os)) {
2085                 if (ext2fs_has_feature_filetype(&fs_param)) {
2086                         fprintf(stderr, "%s", _("The HURD does not support the "
2087                                                 "filetype feature.\n"));
2088                         exit(1);
2089                 }
2090                 if (ext2fs_has_feature_huge_file(&fs_param)) {
2091                         fprintf(stderr, "%s", _("The HURD does not support the "
2092                                                 "huge_file feature.\n"));
2093                         exit(1);
2094                 }
2095                 if (ext2fs_has_feature_metadata_csum(&fs_param)) {
2096                         fprintf(stderr, "%s", _("The HURD does not support the "
2097                                                 "metadata_csum feature.\n"));
2098                         exit(1);
2099                 }
2100                 if (ext2fs_has_feature_ea_inode(&fs_param)) {
2101                         fprintf(stderr, "%s", _("The HURD does not support the "
2102                                                 "ea_inode feature.\n"));
2103                         exit(1);
2104                 }
2105         }
2106
2107         /* Get the hardware sector sizes, if available */
2108         retval = ext2fs_get_device_sectsize(device_name, &lsector_size);
2109         if (retval) {
2110                 com_err(program_name, retval, "%s",
2111                         _("while trying to determine hardware sector size"));
2112                 exit(1);
2113         }
2114         retval = ext2fs_get_device_phys_sectsize(device_name, &psector_size);
2115         if (retval) {
2116                 com_err(program_name, retval, "%s",
2117                         _("while trying to determine physical sector size"));
2118                 exit(1);
2119         }
2120
2121         tmp = getenv("MKE2FS_DEVICE_SECTSIZE");
2122         if (tmp != NULL)
2123                 lsector_size = atoi(tmp);
2124         tmp = getenv("MKE2FS_DEVICE_PHYS_SECTSIZE");
2125         if (tmp != NULL)
2126                 psector_size = atoi(tmp);
2127
2128         /* Older kernels may not have physical/logical distinction */
2129         if (!psector_size)
2130                 psector_size = lsector_size;
2131
2132         if (blocksize <= 0) {
2133                 use_bsize = get_int_from_profile(fs_types, "blocksize", 4096);
2134
2135                 if (use_bsize == -1) {
2136                         use_bsize = sys_page_size;
2137                         if (is_before_linux_ver(2, 6, 0) && use_bsize > 4096)
2138                                 use_bsize = 4096;
2139                 }
2140                 if (lsector_size && use_bsize < lsector_size)
2141                         use_bsize = lsector_size;
2142                 if ((blocksize < 0) && (use_bsize < (-blocksize)))
2143                         use_bsize = -blocksize;
2144                 blocksize = use_bsize;
2145                 fs_blocks_count /= (blocksize / 1024);
2146         } else {
2147                 if (blocksize < lsector_size) {                 /* Impossible */
2148                         com_err(program_name, EINVAL, "%s",
2149                                 _("while setting blocksize; too small "
2150                                   "for device\n"));
2151                         exit(1);
2152                 } else if ((blocksize < psector_size) &&
2153                            (psector_size <= sys_page_size)) {   /* Suboptimal */
2154                         fprintf(stderr, _("Warning: specified blocksize %d is "
2155                                 "less than device physical sectorsize %d\n"),
2156                                 blocksize, psector_size);
2157                 }
2158         }
2159
2160         fs_param.s_log_block_size =
2161                 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
2162
2163         /*
2164          * We now need to do a sanity check of fs_blocks_count for
2165          * 32-bit vs 64-bit block number support.
2166          */
2167         if ((fs_blocks_count > MAX_32_NUM) &&
2168             ext2fs_has_feature_64bit(&fs_param))
2169                 ext2fs_clear_feature_resize_inode(&fs_param);
2170         if ((fs_blocks_count > MAX_32_NUM) &&
2171             !ext2fs_has_feature_64bit(&fs_param) &&
2172             get_bool_from_profile(fs_types, "auto_64-bit_support", 0)) {
2173                 ext2fs_set_feature_64bit(&fs_param);
2174                 ext2fs_clear_feature_resize_inode(&fs_param);
2175         }
2176         if ((fs_blocks_count > MAX_32_NUM) &&
2177             !ext2fs_has_feature_64bit(&fs_param)) {
2178                 fprintf(stderr, _("%s: Size of device (0x%llx blocks) %s "
2179                                   "too big to be expressed\n\t"
2180                                   "in 32 bits using a blocksize of %d.\n"),
2181                         program_name, fs_blocks_count, device_name,
2182                         EXT2_BLOCK_SIZE(&fs_param));
2183                 exit(1);
2184         }
2185         /*
2186          * Guard against group descriptor count overflowing... Mostly to avoid
2187          * strange results for absurdly large devices.  This is in log2:
2188          * (blocksize) * (bits per byte) * (maximum number of block groups)
2189          */
2190         if (fs_blocks_count >
2191             (1ULL << (EXT2_BLOCK_SIZE_BITS(&fs_param) + 3 + 32)) - 1) {
2192                 fprintf(stderr, _("%s: Size of device (0x%llx blocks) %s "
2193                                   "too big to create\n\t"
2194                                   "a filesystem using a blocksize of %d.\n"),
2195                         program_name, fs_blocks_count, device_name,
2196                         EXT2_BLOCK_SIZE(&fs_param));
2197                 exit(1);
2198         }
2199
2200         ext2fs_blocks_count_set(&fs_param, fs_blocks_count);
2201
2202         if (ext2fs_has_feature_journal_dev(&fs_param)) {
2203                 int i;
2204
2205                 for (i=0; fs_types[i]; i++) {
2206                         free(fs_types[i]);
2207                         fs_types[i] = 0;
2208                 }
2209                 fs_types[0] = strdup("journal");
2210                 fs_types[1] = 0;
2211         }
2212
2213         if (verbose) {
2214                 fputs(_("fs_types for mke2fs.conf resolution: "), stdout);
2215                 print_str_list(fs_types);
2216         }
2217
2218         if (r_opt == EXT2_GOOD_OLD_REV &&
2219             (fs_param.s_feature_compat || fs_param.s_feature_incompat ||
2220              fs_param.s_feature_ro_compat)) {
2221                 fprintf(stderr, "%s", _("Filesystem features not supported "
2222                                         "with revision 0 filesystems\n"));
2223                 exit(1);
2224         }
2225
2226         if (s_opt > 0) {
2227                 if (r_opt == EXT2_GOOD_OLD_REV) {
2228                         fprintf(stderr, "%s",
2229                                 _("Sparse superblocks not supported "
2230                                   "with revision 0 filesystems\n"));
2231                         exit(1);
2232                 }
2233                 ext2fs_set_feature_sparse_super(&fs_param);
2234         } else if (s_opt == 0)
2235                 ext2fs_clear_feature_sparse_super(&fs_param);
2236
2237         if (journal_size != 0) {
2238                 if (r_opt == EXT2_GOOD_OLD_REV) {
2239                         fprintf(stderr, "%s", _("Journals not supported with "
2240                                                 "revision 0 filesystems\n"));
2241                         exit(1);
2242                 }
2243                 ext2fs_set_feature_journal(&fs_param);
2244         }
2245
2246         /* Get reserved_ratio from profile if not specified on cmd line. */
2247         if (reserved_ratio < 0.0) {
2248                 reserved_ratio = get_double_from_profile(
2249                                         fs_types, "reserved_ratio", 5.0);
2250                 if (reserved_ratio > 50 || reserved_ratio < 0) {
2251                         com_err(program_name, 0,
2252                                 _("invalid reserved blocks percent - %lf"),
2253                                 reserved_ratio);
2254                         exit(1);
2255                 }
2256         }
2257
2258         if (ext2fs_has_feature_journal_dev(&fs_param)) {
2259                 reserved_ratio = 0;
2260                 fs_param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV;
2261                 fs_param.s_feature_compat = 0;
2262                 fs_param.s_feature_ro_compat &=
2263                                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM;
2264         }
2265
2266         /* Check the user's mkfs options for 64bit */
2267         if (ext2fs_has_feature_64bit(&fs_param) &&
2268             !ext2fs_has_feature_extents(&fs_param)) {
2269                 printf("%s", _("Extents MUST be enabled for a 64-bit "
2270                                "filesystem.  Pass -O extents to rectify.\n"));
2271                 exit(1);
2272         }
2273
2274         /* Set first meta blockgroup via an environment variable */
2275         /* (this is mostly for debugging purposes) */
2276         if (ext2fs_has_feature_meta_bg(&fs_param) &&
2277             (tmp = getenv("MKE2FS_FIRST_META_BG")))
2278                 fs_param.s_first_meta_bg = atoi(tmp);
2279         if (ext2fs_has_feature_bigalloc(&fs_param)) {
2280                 if (!cluster_size)
2281                         cluster_size = get_int_from_profile(fs_types,
2282                                                             "cluster_size",
2283                                                             blocksize*16);
2284                 fs_param.s_log_cluster_size =
2285                         int_log2(cluster_size >> EXT2_MIN_CLUSTER_LOG_SIZE);
2286                 if (fs_param.s_log_cluster_size &&
2287                     fs_param.s_log_cluster_size < fs_param.s_log_block_size) {
2288                         com_err(program_name, 0, "%s",
2289                                 _("The cluster size may not be "
2290                                   "smaller than the block size.\n"));
2291                         exit(1);
2292                 }
2293         } else if (cluster_size) {
2294                 com_err(program_name, 0, "%s",
2295                         _("specifying a cluster size requires the "
2296                           "bigalloc feature"));
2297                 exit(1);
2298         } else
2299                 fs_param.s_log_cluster_size = fs_param.s_log_block_size;
2300
2301         if (inode_ratio == 0) {
2302                 inode_ratio = get_int_from_profile(fs_types, "inode_ratio",
2303                                                    8192);
2304                 if (inode_ratio < blocksize)
2305                         inode_ratio = blocksize;
2306                 if (inode_ratio < EXT2_CLUSTER_SIZE(&fs_param))
2307                         inode_ratio = EXT2_CLUSTER_SIZE(&fs_param);
2308         }
2309
2310 #ifdef HAVE_BLKID_PROBE_GET_TOPOLOGY
2311         retval = get_device_geometry(device_name, &fs_param,
2312                                      (unsigned int) psector_size);
2313         if (retval < 0) {
2314                 fprintf(stderr,
2315                         _("warning: Unable to get device geometry for %s\n"),
2316                         device_name);
2317         } else if (retval) {
2318                 printf(_("%s alignment is offset by %lu bytes.\n"),
2319                        device_name, retval);
2320                 printf(_("This may result in very poor performance, "
2321                           "(re)-partitioning suggested.\n"));
2322         }
2323 #endif
2324
2325         num_backups = get_int_from_profile(fs_types, "num_backup_sb", 2);
2326
2327         blocksize = EXT2_BLOCK_SIZE(&fs_param);
2328
2329         /*
2330          * Initialize s_desc_size so that the parse_extended_opts()
2331          * can correctly handle "-E resize=NNN" if the 64-bit option
2332          * is set.
2333          */
2334         if (ext2fs_has_feature_64bit(&fs_param))
2335                 fs_param.s_desc_size = EXT2_MIN_DESC_SIZE_64BIT;
2336
2337         /* This check should happen beyond the last assignment to blocksize */
2338         if (blocksize > sys_page_size) {
2339                 if (!force) {
2340                         com_err(program_name, 0,
2341                                 _("%d-byte blocks too big for system (max %d)"),
2342                                 blocksize, sys_page_size);
2343                         proceed_question(proceed_delay);
2344                 }
2345                 fprintf(stderr, _("Warning: %d-byte blocks too big for system "
2346                                   "(max %d), forced to continue\n"),
2347                         blocksize, sys_page_size);
2348         }
2349
2350         /* Metadata checksumming wasn't totally stable before 3.18. */
2351         if (is_before_linux_ver(3, 18, 0) &&
2352             ext2fs_has_feature_metadata_csum(&fs_param))
2353                 fprintf(stderr, _("Suggestion: Use Linux kernel >= 3.18 for "
2354                         "improved stability of the metadata and journal "
2355                         "checksum features.\n"));
2356
2357         /*
2358          * On newer kernels we do have lazy_itable_init support. So pick the
2359          * right default in case ext4 module is not loaded.
2360          */
2361         if (is_before_linux_ver(2, 6, 37))
2362                 lazy_itable_init = 0;
2363         else
2364                 lazy_itable_init = 1;
2365
2366         if (access("/sys/fs/ext4/features/lazy_itable_init", R_OK) == 0)
2367                 lazy_itable_init = 1;
2368
2369         lazy_itable_init = get_bool_from_profile(fs_types,
2370                                                  "lazy_itable_init",
2371                                                  lazy_itable_init);
2372         discard = get_bool_from_profile(fs_types, "discard" , discard);
2373         journal_flags |= get_bool_from_profile(fs_types,
2374                                                "lazy_journal_init", 0) ?
2375                                                EXT2_MKJOURNAL_LAZYINIT : 0;
2376         journal_flags |= EXT2_MKJOURNAL_NO_MNT_CHECK;
2377
2378         if (!journal_location_string)
2379                 journal_location_string = get_string_from_profile(fs_types,
2380                                                 "journal_location", "");
2381         if ((journal_location == ~0ULL) && journal_location_string &&
2382             *journal_location_string)
2383                 journal_location = parse_num_blocks2(journal_location_string,
2384                                                 fs_param.s_log_block_size);
2385         free(journal_location_string);
2386
2387         packed_meta_blocks = get_bool_from_profile(fs_types,
2388                                                    "packed_meta_blocks", 0);
2389         if (packed_meta_blocks)
2390                 journal_location = 0;
2391
2392         if (ext2fs_has_feature_casefold(&fs_param)) {
2393                 char *ef, *en = get_string_from_profile(fs_types,
2394                                                         "encoding", "utf8");
2395                 int encoding = e2p_str2encoding(en);
2396
2397                 if (encoding < 0) {
2398                         com_err(program_name, 0,
2399                                 _("Unknown filename encoding from profile: %s"),
2400                                 en);
2401                         exit(1);
2402                 }
2403                 free(en);
2404                 fs_param.s_encoding = encoding;
2405                 ef = get_string_from_profile(fs_types, "encoding_flags", NULL);
2406                 if (ef) {
2407                         if (e2p_str2encoding_flags(encoding, ef,
2408                                         &fs_param.s_encoding_flags) < 0) {
2409                                 com_err(program_name, 0,
2410                         _("Unknown encoding flags from profile: %s"), ef);
2411                                 exit(1);
2412                         }
2413                         free(ef);
2414                 } else
2415                         fs_param.s_encoding_flags =
2416                                 e2p_get_encoding_flags(encoding);
2417         }
2418
2419         /* Get options from profile */
2420         for (cpp = fs_types; *cpp; cpp++) {
2421                 tmp = NULL;
2422                 profile_get_string(profile, "fs_types", *cpp, "options", "", &tmp);
2423                         if (tmp && *tmp)
2424                                 parse_extended_opts(&fs_param, tmp);
2425                         free(tmp);
2426         }
2427
2428         if (extended_opts)
2429                 parse_extended_opts(&fs_param, extended_opts);
2430
2431         if (explicit_fssize == 0 && offset > 0) {
2432                 fs_blocks_count -= offset / EXT2_BLOCK_SIZE(&fs_param);
2433                 ext2fs_blocks_count_set(&fs_param, fs_blocks_count);
2434                 fprintf(stderr,
2435                         _("\nWarning: offset specified without an "
2436                           "explicit file system size.\n"
2437                           "Creating a file system with %llu blocks "
2438                           "but this might\n"
2439                           "not be what you want.\n\n"),
2440                         (unsigned long long) fs_blocks_count);
2441         }
2442
2443         if (quotatype_bits & QUOTA_PRJ_BIT)
2444                 ext2fs_set_feature_project(&fs_param);
2445
2446         if (ext2fs_has_feature_project(&fs_param)) {
2447                 quotatype_bits |= QUOTA_PRJ_BIT;
2448                 if (inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
2449                         com_err(program_name, 0,
2450                                 _("%d byte inodes are too small for "
2451                                   "project quota"),
2452                                 inode_size);
2453                         exit(1);
2454                 }
2455                 if (inode_size == 0) {
2456                         inode_size = get_int_from_profile(fs_types,
2457                                                           "inode_size", 0);
2458                         if (inode_size <= EXT2_GOOD_OLD_INODE_SIZE*2)
2459                                 inode_size = EXT2_GOOD_OLD_INODE_SIZE*2;
2460                 }
2461         }
2462
2463         if (ext2fs_has_feature_casefold(&fs_param) &&
2464             ext2fs_has_feature_encrypt(&fs_param)) {
2465                 com_err(program_name, 0, "%s",
2466                         _("The encrypt and casefold features are not "
2467                           "compatible.\nThey can not be both enabled "
2468                           "simultaneously.\n"));
2469                       exit (1);
2470         }
2471
2472         /* Don't allow user to set both metadata_csum and uninit_bg bits. */
2473         if (ext2fs_has_feature_metadata_csum(&fs_param) &&
2474             ext2fs_has_feature_gdt_csum(&fs_param))
2475                 ext2fs_clear_feature_gdt_csum(&fs_param);
2476
2477         /* Can't support bigalloc feature without extents feature */
2478         if (ext2fs_has_feature_bigalloc(&fs_param) &&
2479             !ext2fs_has_feature_extents(&fs_param)) {
2480                 com_err(program_name, 0, "%s",
2481                         _("Can't support bigalloc feature without "
2482                           "extents feature"));
2483                 exit(1);
2484         }
2485
2486         if (ext2fs_has_feature_meta_bg(&fs_param) &&
2487             ext2fs_has_feature_resize_inode(&fs_param)) {
2488                 fprintf(stderr, "%s", _("The resize_inode and meta_bg "
2489                                         "features are not compatible.\n"
2490                                         "They can not be both enabled "
2491                                         "simultaneously.\n"));
2492                 exit(1);
2493         }
2494
2495         if (!quiet && ext2fs_has_feature_bigalloc(&fs_param))
2496                 fprintf(stderr, "%s", _("\nWarning: the bigalloc feature is "
2497                                   "still under development\n"
2498                                   "See https://ext4.wiki.kernel.org/"
2499                                   "index.php/Bigalloc for more information\n\n"));
2500
2501         /*
2502          * Since sparse_super is the default, we would only have a problem
2503          * here if it was explicitly disabled.
2504          */
2505         if (ext2fs_has_feature_resize_inode(&fs_param) &&
2506             !ext2fs_has_feature_sparse_super(&fs_param)) {
2507                 com_err(program_name, 0, "%s",
2508                         _("reserved online resize blocks not supported "
2509                           "on non-sparse filesystem"));
2510                 exit(1);
2511         }
2512
2513         if (fs_param.s_blocks_per_group) {
2514                 if (fs_param.s_blocks_per_group < 256 ||
2515                     fs_param.s_blocks_per_group > 8 * (unsigned) blocksize) {
2516                         com_err(program_name, 0, "%s",
2517                                 _("blocks per group count out of range"));
2518                         exit(1);
2519                 }
2520         }
2521
2522         /*
2523          * If the bigalloc feature is enabled, then the -g option will
2524          * specify the number of clusters per group.
2525          */
2526         if (ext2fs_has_feature_bigalloc(&fs_param)) {
2527                 fs_param.s_clusters_per_group = fs_param.s_blocks_per_group;
2528                 fs_param.s_blocks_per_group = 0;
2529         }
2530
2531         if (inode_size == 0)
2532                 inode_size = get_int_from_profile(fs_types, "inode_size", 0);
2533         if (!flex_bg_size && ext2fs_has_feature_flex_bg(&fs_param))
2534                 flex_bg_size = get_uint_from_profile(fs_types,
2535                                                      "flex_bg_size", 16);
2536         if (flex_bg_size) {
2537                 if (!ext2fs_has_feature_flex_bg(&fs_param)) {
2538                         com_err(program_name, 0, "%s",
2539                                 _("Flex_bg feature not enabled, so "
2540                                   "flex_bg size may not be specified"));
2541                         exit(1);
2542                 }
2543                 fs_param.s_log_groups_per_flex = int_log2(flex_bg_size);
2544         }
2545
2546         if (inode_size && fs_param.s_rev_level >= EXT2_DYNAMIC_REV) {
2547                 if (inode_size < EXT2_GOOD_OLD_INODE_SIZE ||
2548                     inode_size > EXT2_BLOCK_SIZE(&fs_param) ||
2549                     inode_size & (inode_size - 1)) {
2550                         com_err(program_name, 0,
2551                                 _("invalid inode size %d (min %d/max %d)"),
2552                                 inode_size, EXT2_GOOD_OLD_INODE_SIZE,
2553                                 blocksize);
2554                         exit(1);
2555                 }
2556                 fs_param.s_inode_size = inode_size;
2557         }
2558
2559         /*
2560          * If inode size is 128 and inline data is enabled, we need
2561          * to notify users that inline data will never be useful.
2562          */
2563         if (ext2fs_has_feature_inline_data(&fs_param) &&
2564             fs_param.s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
2565                 com_err(program_name, 0,
2566                         _("%d byte inodes are too small for inline data; "
2567                           "specify larger size"),
2568                         fs_param.s_inode_size);
2569                 exit(1);
2570         }
2571
2572         /* Make sure number of inodes specified will fit in 32 bits */
2573         if (num_inodes == 0) {
2574                 unsigned long long n;
2575                 n = ext2fs_blocks_count(&fs_param) * blocksize / inode_ratio;
2576                 if (n > MAX_32_NUM) {
2577                         if (ext2fs_has_feature_64bit(&fs_param))
2578                                 num_inodes = MAX_32_NUM;
2579                         else {
2580                                 com_err(program_name, 0,
2581                                         _("too many inodes (%llu), raise "
2582                                           "inode ratio?"), n);
2583                                 exit(1);
2584                         }
2585                 }
2586         } else if (num_inodes > MAX_32_NUM) {
2587                 com_err(program_name, 0,
2588                         _("too many inodes (%llu), specify < 2^32 inodes"),
2589                           num_inodes);
2590                 exit(1);
2591         }
2592         /*
2593          * Calculate number of inodes based on the inode ratio
2594          */
2595         fs_param.s_inodes_count = num_inodes ? num_inodes :
2596                 (ext2fs_blocks_count(&fs_param) * blocksize) / inode_ratio;
2597
2598         if ((((unsigned long long)fs_param.s_inodes_count) *
2599              (inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE)) >=
2600             ((ext2fs_blocks_count(&fs_param)) *
2601              EXT2_BLOCK_SIZE(&fs_param))) {
2602                 com_err(program_name, 0, _("inode_size (%u) * inodes_count "
2603                                           "(%u) too big for a\n\t"
2604                                           "filesystem with %llu blocks, "
2605                                           "specify higher inode_ratio (-i)\n\t"
2606                                           "or lower inode count (-N).\n"),
2607                         inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE,
2608                         fs_param.s_inodes_count,
2609                         (unsigned long long) ext2fs_blocks_count(&fs_param));
2610                 exit(1);
2611         }
2612
2613         /*
2614          * Calculate number of blocks to reserve
2615          */
2616         ext2fs_r_blocks_count_set(&fs_param, reserved_ratio *
2617                                   ext2fs_blocks_count(&fs_param) / 100.0);
2618
2619         if (ext2fs_has_feature_sparse_super2(&fs_param)) {
2620                 if (num_backups >= 1)
2621                         fs_param.s_backup_bgs[0] = 1;
2622                 if (num_backups >= 2)
2623                         fs_param.s_backup_bgs[1] = ~0;
2624         }
2625
2626         free(fs_type);
2627         free(usage_types);
2628 }
2629
2630 static int should_do_undo(const char *name)
2631 {
2632         errcode_t retval;
2633         io_channel channel;
2634         __u16   s_magic;
2635         struct ext2_super_block super;
2636         io_manager manager = unix_io_manager;
2637         int csum_flag, force_undo;
2638
2639         csum_flag = ext2fs_has_feature_metadata_csum(&fs_param) ||
2640                     ext2fs_has_feature_gdt_csum(&fs_param);
2641         force_undo = get_int_from_profile(fs_types, "force_undo", 0);
2642         if (!force_undo && (!csum_flag || !lazy_itable_init))
2643                 return 0;
2644
2645         retval = manager->open(name, IO_FLAG_EXCLUSIVE,  &channel);
2646         if (retval) {
2647                 /*
2648                  * We don't handle error cases instead we
2649                  * declare that the file system doesn't exist
2650                  * and let the rest of mke2fs take care of
2651                  * error
2652                  */
2653                 retval = 0;
2654                 goto open_err_out;
2655         }
2656
2657         io_channel_set_blksize(channel, SUPERBLOCK_OFFSET);
2658         retval = io_channel_read_blk64(channel, 1, -SUPERBLOCK_SIZE, &super);
2659         if (retval) {
2660                 retval = 0;
2661                 goto err_out;
2662         }
2663
2664 #if defined(WORDS_BIGENDIAN)
2665         s_magic = ext2fs_swab16(super.s_magic);
2666 #else
2667         s_magic = super.s_magic;
2668 #endif
2669
2670         if (s_magic == EXT2_SUPER_MAGIC)
2671                 retval = 1;
2672
2673 err_out:
2674         io_channel_close(channel);
2675
2676 open_err_out:
2677
2678         return retval;
2679 }
2680
2681 static int mke2fs_setup_tdb(const char *name, io_manager *io_ptr)
2682 {
2683         errcode_t retval = ENOMEM;
2684         char *tdb_dir = NULL, *tdb_file = NULL;
2685         char *dev_name, *tmp_name;
2686         int free_tdb_dir = 0;
2687
2688         /* (re)open a specific undo file */
2689         if (undo_file && undo_file[0] != 0) {
2690                 retval = set_undo_io_backing_manager(*io_ptr);
2691                 if (retval)
2692                         goto err;
2693                 *io_ptr = undo_io_manager;
2694                 retval = set_undo_io_backup_file(undo_file);
2695                 if (retval)
2696                         goto err;
2697                 printf(_("Overwriting existing filesystem; this can be undone "
2698                          "using the command:\n"
2699                          "    e2undo %s %s\n\n"), undo_file, name);
2700                 return retval;
2701         }
2702
2703         /*
2704          * Configuration via a conf file would be
2705          * nice
2706          */
2707         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2708         if (!tdb_dir) {
2709                 profile_get_string(profile, "defaults",
2710                                    "undo_dir", 0, "/var/lib/e2fsprogs",
2711                                    &tdb_dir);
2712                 free_tdb_dir = 1;
2713         }
2714
2715         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2716             access(tdb_dir, W_OK)) {
2717                 if (free_tdb_dir)
2718                         free(tdb_dir);
2719                 return 0;
2720         }
2721
2722         tmp_name = strdup(name);
2723         if (!tmp_name)
2724                 goto errout;
2725         dev_name = basename(tmp_name);
2726         tdb_file = malloc(strlen(tdb_dir) + 8 + strlen(dev_name) + 7 + 1);
2727         if (!tdb_file) {
2728                 free(tmp_name);
2729                 goto errout;
2730         }
2731         sprintf(tdb_file, "%s/mke2fs-%s.e2undo", tdb_dir, dev_name);
2732         free(tmp_name);
2733
2734         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2735                 retval = errno;
2736                 com_err(program_name, retval,
2737                         _("while trying to delete %s"), tdb_file);
2738                 goto errout;
2739         }
2740
2741         retval = set_undo_io_backing_manager(*io_ptr);
2742         if (retval)
2743                 goto errout;
2744         *io_ptr = undo_io_manager;
2745         retval = set_undo_io_backup_file(tdb_file);
2746         if (retval)
2747                 goto errout;
2748         printf(_("Overwriting existing filesystem; this can be undone "
2749                  "using the command:\n"
2750                  "    e2undo %s %s\n\n"), tdb_file, name);
2751
2752         if (free_tdb_dir)
2753                 free(tdb_dir);
2754         free(tdb_file);
2755         return 0;
2756
2757 errout:
2758         if (free_tdb_dir)
2759                 free(tdb_dir);
2760         free(tdb_file);
2761 err:
2762         com_err(program_name, retval, "%s",
2763                 _("while trying to setup undo file\n"));
2764         return retval;
2765 }
2766
2767 static int mke2fs_discard_device(ext2_filsys fs)
2768 {
2769         struct ext2fs_numeric_progress_struct progress;
2770         blk64_t blocks = ext2fs_blocks_count(fs->super);
2771         blk64_t count = DISCARD_STEP_MB;
2772         blk64_t cur;
2773         int retval = 0;
2774
2775         /*
2776          * Let's try if discard really works on the device, so
2777          * we do not print numeric progress resulting in failure
2778          * afterwards.
2779          */
2780         retval = io_channel_discard(fs->io, 0, fs->blocksize);
2781         if (retval)
2782                 return retval;
2783         cur = fs->blocksize;
2784
2785         count *= (1024 * 1024);
2786         count /= fs->blocksize;
2787
2788         ext2fs_numeric_progress_init(fs, &progress,
2789                                      _("Discarding device blocks: "),
2790                                      blocks);
2791         while (cur < blocks) {
2792                 ext2fs_numeric_progress_update(fs, &progress, cur);
2793
2794                 if (cur + count > blocks)
2795                         count = blocks - cur;
2796
2797                 retval = io_channel_discard(fs->io, cur, count);
2798                 if (retval)
2799                         break;
2800                 cur += count;
2801         }
2802
2803         if (retval) {
2804                 ext2fs_numeric_progress_close(fs, &progress,
2805                                       _("failed - "));
2806                 if (!quiet)
2807                         printf("%s\n",error_message(retval));
2808         } else
2809                 ext2fs_numeric_progress_close(fs, &progress,
2810                                       _("done                            \n"));
2811
2812         return retval;
2813 }
2814
2815 static void fix_cluster_bg_counts(ext2_filsys fs)
2816 {
2817         blk64_t         block, num_blocks, last_block, next;
2818         blk64_t         tot_free = 0;
2819         errcode_t       retval;
2820         dgrp_t          group = 0;
2821         int             grp_free = 0;
2822
2823         num_blocks = ext2fs_blocks_count(fs->super);
2824         last_block = ext2fs_group_last_block2(fs, group);
2825         block = fs->super->s_first_data_block;
2826         while (block < num_blocks) {
2827                 retval = ext2fs_find_first_zero_block_bitmap2(fs->block_map,
2828                                                 block, last_block, &next);
2829                 if (retval == 0)
2830                         block = next;
2831                 else {
2832                         block = last_block + 1;
2833                         goto next_bg;
2834                 }
2835
2836                 retval = ext2fs_find_first_set_block_bitmap2(fs->block_map,
2837                                                 block, last_block, &next);
2838                 if (retval)
2839                         next = last_block + 1;
2840                 grp_free += EXT2FS_NUM_B2C(fs, next - block);
2841                 tot_free += next - block;
2842                 block = next;
2843
2844                 if (block > last_block) {
2845                 next_bg:
2846                         ext2fs_bg_free_blocks_count_set(fs, group, grp_free);
2847                         ext2fs_group_desc_csum_set(fs, group);
2848                         grp_free = 0;
2849                         group++;
2850                         last_block = ext2fs_group_last_block2(fs, group);
2851                 }
2852         }
2853         ext2fs_free_blocks_count_set(fs->super, tot_free);
2854 }
2855
2856 static int create_quota_inodes(ext2_filsys fs)
2857 {
2858         quota_ctx_t qctx;
2859         errcode_t retval;
2860
2861         retval = quota_init_context(&qctx, fs, quotatype_bits);
2862         if (retval) {
2863                 com_err(program_name, retval,
2864                         _("while initializing quota context"));
2865                 exit(1);
2866         }
2867         quota_compute_usage(qctx);
2868         retval = quota_write_inode(qctx, quotatype_bits);
2869         if (retval) {
2870                 com_err(program_name, retval,
2871                         _("while writing quota inodes"));
2872                 exit(1);
2873         }
2874         quota_release_context(&qctx);
2875
2876         return 0;
2877 }
2878
2879 static errcode_t set_error_behavior(ext2_filsys fs)
2880 {
2881         char    *arg = NULL;
2882         short   errors = fs->super->s_errors;
2883
2884         arg = get_string_from_profile(fs_types, "errors", NULL);
2885         if (arg == NULL)
2886                 goto try_user;
2887
2888         if (strcmp(arg, "continue") == 0)
2889                 errors = EXT2_ERRORS_CONTINUE;
2890         else if (strcmp(arg, "remount-ro") == 0)
2891                 errors = EXT2_ERRORS_RO;
2892         else if (strcmp(arg, "panic") == 0)
2893                 errors = EXT2_ERRORS_PANIC;
2894         else {
2895                 com_err(program_name, 0,
2896                         _("bad error behavior in profile - %s"),
2897                         arg);
2898                 free(arg);
2899                 return EXT2_ET_INVALID_ARGUMENT;
2900         }
2901         free(arg);
2902
2903 try_user:
2904         if (errors_behavior)
2905                 errors = errors_behavior;
2906
2907         fs->super->s_errors = errors;
2908         return 0;
2909 }
2910
2911 int main (int argc, char *argv[])
2912 {
2913         errcode_t       retval = 0;
2914         ext2_filsys     fs;
2915         badblocks_list  bb_list = 0;
2916         unsigned int    journal_blocks = 0;
2917         unsigned int    i, checkinterval;
2918         int             max_mnt_count;
2919         int             val, hash_alg;
2920         int             flags;
2921         int             old_bitmaps;
2922         io_manager      io_ptr;
2923         char            opt_string[40];
2924         char            *hash_alg_str;
2925         int             itable_zeroed = 0;
2926
2927 #ifdef ENABLE_NLS
2928         setlocale(LC_MESSAGES, "");
2929         setlocale(LC_CTYPE, "");
2930         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2931         textdomain(NLS_CAT_NAME);
2932         set_com_err_gettext(gettext);
2933 #endif
2934         PRS(argc, argv);
2935
2936 #ifdef CONFIG_TESTIO_DEBUG
2937         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
2938                 io_ptr = test_io_manager;
2939                 test_io_backing_manager = unix_io_manager;
2940         } else
2941 #endif
2942                 io_ptr = unix_io_manager;
2943
2944         if (undo_file != NULL || should_do_undo(device_name)) {
2945                 retval = mke2fs_setup_tdb(device_name, &io_ptr);
2946                 if (retval)
2947                         exit(1);
2948         }
2949
2950         /*
2951          * Initialize the superblock....
2952          */
2953         flags = EXT2_FLAG_EXCLUSIVE;
2954         if (direct_io)
2955                 flags |= EXT2_FLAG_DIRECT_IO;
2956         profile_get_boolean(profile, "options", "old_bitmaps", 0, 0,
2957                             &old_bitmaps);
2958         if (!old_bitmaps)
2959                 flags |= EXT2_FLAG_64BITS;
2960         /*
2961          * By default, we print how many inode tables or block groups
2962          * or whatever we've written so far.  The quiet flag disables
2963          * this, along with a lot of other output.
2964          */
2965         if (!quiet)
2966                 flags |= EXT2_FLAG_PRINT_PROGRESS;
2967         if (android_sparse_file) {
2968                 char *android_sparse_params = malloc(strlen(device_name) + 48);
2969
2970                 if (!android_sparse_params) {
2971                         com_err(program_name, ENOMEM, "%s",
2972                                 _("in malloc for android_sparse_params"));
2973                         exit(1);
2974                 }
2975                 sprintf(android_sparse_params, "(%s):%u:%u",
2976                          device_name, fs_param.s_blocks_count,
2977                          1024 << fs_param.s_log_block_size);
2978                 retval = ext2fs_initialize(android_sparse_params, flags,
2979                                            &fs_param, sparse_io_manager, &fs);
2980                 free(android_sparse_params);
2981         } else
2982                 retval = ext2fs_initialize(device_name, flags, &fs_param,
2983                                            io_ptr, &fs);
2984         if (retval) {
2985                 com_err(device_name, retval, "%s",
2986                         _("while setting up superblock"));
2987                 exit(1);
2988         }
2989         fs->progress_ops = &ext2fs_numeric_progress_ops;
2990
2991         /* Set the error behavior */
2992         retval = set_error_behavior(fs);
2993         if (retval)
2994                 usage();
2995
2996         /* Check the user's mkfs options for metadata checksumming */
2997         if (!quiet &&
2998             !ext2fs_has_feature_journal_dev(fs->super) &&
2999             ext2fs_has_feature_metadata_csum(fs->super)) {
3000                 if (!ext2fs_has_feature_extents(fs->super))
3001                         printf("%s",
3002                                _("Extents are not enabled.  The file extent "
3003                                  "tree can be checksummed, whereas block maps "
3004                                  "cannot.  Not enabling extents reduces the "
3005                                  "coverage of metadata checksumming.  "
3006                                  "Pass -O extents to rectify.\n"));
3007                 if (!ext2fs_has_feature_64bit(fs->super))
3008                         printf("%s",
3009                                _("64-bit filesystem support is not enabled.  "
3010                                  "The larger fields afforded by this feature "
3011                                  "enable full-strength checksumming.  "
3012                                  "Pass -O 64bit to rectify.\n"));
3013         }
3014
3015         if (ext2fs_has_feature_csum_seed(fs->super) &&
3016             !ext2fs_has_feature_metadata_csum(fs->super)) {
3017                 printf("%s", _("The metadata_csum_seed feature "
3018                                "requires the metadata_csum feature.\n"));
3019                 exit(1);
3020         }
3021
3022         /* Calculate journal blocks */
3023         if (!journal_device && ((journal_size) ||
3024             ext2fs_has_feature_journal(&fs_param)))
3025                 journal_blocks = figure_journal_size(journal_size, fs);
3026
3027         sprintf(opt_string, "tdb_data_size=%d", fs->blocksize <= 4096 ?
3028                 32768 : fs->blocksize * 8);
3029         io_channel_set_options(fs->io, opt_string);
3030         if (offset) {
3031                 sprintf(opt_string, "offset=%llu", offset);
3032                 io_channel_set_options(fs->io, opt_string);
3033         }
3034
3035         /* Can't undo discard ... */
3036         if (!noaction && discard && dev_size && (io_ptr != undo_io_manager)) {
3037                 retval = mke2fs_discard_device(fs);
3038                 if (!retval && io_channel_discard_zeroes_data(fs->io)) {
3039                         if (verbose)
3040                                 printf("%s",
3041                                        _("Discard succeeded and will return "
3042                                          "0s - skipping inode table wipe\n"));
3043                         lazy_itable_init = 1;
3044                         itable_zeroed = 1;
3045                         zero_hugefile = 0;
3046                 }
3047         }
3048
3049         if (fs_param.s_flags & EXT2_FLAGS_TEST_FILESYS)
3050                 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
3051
3052         if (ext2fs_has_feature_flex_bg(&fs_param) ||
3053             ext2fs_has_feature_huge_file(&fs_param) ||
3054             ext2fs_has_feature_gdt_csum(&fs_param) ||
3055             ext2fs_has_feature_dir_nlink(&fs_param) ||
3056             ext2fs_has_feature_metadata_csum(&fs_param) ||
3057             ext2fs_has_feature_extra_isize(&fs_param))
3058                 fs->super->s_kbytes_written = 1;
3059
3060         /*
3061          * Wipe out the old on-disk superblock
3062          */
3063         if (!noaction)
3064                 zap_sector(fs, 2, 6);
3065
3066         /*
3067          * Parse or generate a UUID for the filesystem
3068          */
3069         if (fs_uuid) {
3070                 if ((strcasecmp(fs_uuid, "null") == 0) ||
3071                     (strcasecmp(fs_uuid, "clear") == 0)) {
3072                         uuid_clear(fs->super->s_uuid);
3073                 } else if (strcasecmp(fs_uuid, "time") == 0) {
3074                         uuid_generate_time(fs->super->s_uuid);
3075                 } else if (strcasecmp(fs_uuid, "random") == 0) {
3076                         uuid_generate(fs->super->s_uuid);
3077                 } else if (uuid_parse(fs_uuid, fs->super->s_uuid) != 0) {
3078                         com_err(device_name, 0, "could not parse UUID: %s\n",
3079                                 fs_uuid);
3080                         exit(1);
3081                 }
3082         } else
3083                 uuid_generate(fs->super->s_uuid);
3084
3085         if (ext2fs_has_feature_csum_seed(fs->super))
3086                 fs->super->s_checksum_seed = ext2fs_crc32c_le(~0,
3087                                 fs->super->s_uuid, sizeof(fs->super->s_uuid));
3088
3089         ext2fs_init_csum_seed(fs);
3090
3091         /*
3092          * Initialize the directory index variables
3093          */
3094         hash_alg_str = get_string_from_profile(fs_types, "hash_alg",
3095                                                "half_md4");
3096         hash_alg = e2p_string2hash(hash_alg_str);
3097         free(hash_alg_str);
3098         fs->super->s_def_hash_version = (hash_alg >= 0) ? hash_alg :
3099                 EXT2_HASH_HALF_MD4;
3100
3101         if (memcmp(fs_param.s_hash_seed, zero_buf,
3102                 sizeof(fs_param.s_hash_seed)) != 0) {
3103                 memcpy(fs->super->s_hash_seed, fs_param.s_hash_seed,
3104                         sizeof(fs->super->s_hash_seed));
3105         } else
3106                 uuid_generate((unsigned char *) fs->super->s_hash_seed);
3107
3108         /*
3109          * Periodic checks can be enabled/disabled via config file.
3110          * Note we override the kernel include file's idea of what the default
3111          * check interval (never) should be.  It's a good idea to check at
3112          * least *occasionally*, specially since servers will never rarely get
3113          * to reboot, since Linux is so robust these days.  :-)
3114          *
3115          * 180 days (six months) seems like a good value.
3116          */
3117 #ifdef EXT2_DFL_CHECKINTERVAL
3118 #undef EXT2_DFL_CHECKINTERVAL
3119 #endif
3120 #define EXT2_DFL_CHECKINTERVAL (86400L * 180L)
3121
3122         if (get_bool_from_profile(fs_types, "enable_periodic_fsck", 0)) {
3123                 fs->super->s_checkinterval = EXT2_DFL_CHECKINTERVAL;
3124                 fs->super->s_max_mnt_count = EXT2_DFL_MAX_MNT_COUNT;
3125                 /*
3126                  * Add "jitter" to the superblock's check interval so that we
3127                  * don't check all the filesystems at the same time.  We use a
3128                  * kludgy hack of using the UUID to derive a random jitter value
3129                  */
3130                 for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++)
3131                         val += fs->super->s_uuid[i];
3132                 fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT;
3133         } else
3134                 fs->super->s_max_mnt_count = -1;
3135
3136         /*
3137          * Override the creator OS, if applicable
3138          */
3139         if (creator_os && !set_os(fs->super, creator_os)) {
3140                 com_err (program_name, 0, _("unknown os - %s"), creator_os);
3141                 exit(1);
3142         }
3143
3144         /*
3145          * For the Hurd, we will turn off filetype since it doesn't
3146          * support it.
3147          */
3148         if (fs->super->s_creator_os == EXT2_OS_HURD)
3149                 ext2fs_clear_feature_filetype(fs->super);
3150
3151         /*
3152          * Set the volume label...
3153          */
3154         if (volume_label) {
3155                 memset(fs->super->s_volume_name, 0,
3156                        sizeof(fs->super->s_volume_name));
3157                 strncpy(fs->super->s_volume_name, volume_label,
3158                         sizeof(fs->super->s_volume_name));
3159         }
3160
3161         /*
3162          * Set the last mount directory
3163          */
3164         if (mount_dir) {
3165                 memset(fs->super->s_last_mounted, 0,
3166                        sizeof(fs->super->s_last_mounted));
3167                 strncpy(fs->super->s_last_mounted, mount_dir,
3168                         sizeof(fs->super->s_last_mounted));
3169         }
3170
3171         /* Set current default encryption algorithms for data and
3172          * filename encryption */
3173         if (ext2fs_has_feature_encrypt(fs->super)) {
3174                 fs->super->s_encrypt_algos[0] =
3175                         EXT4_ENCRYPTION_MODE_AES_256_XTS;
3176                 fs->super->s_encrypt_algos[1] =
3177                         EXT4_ENCRYPTION_MODE_AES_256_CTS;
3178         }
3179
3180         if (ext2fs_has_feature_metadata_csum(fs->super))
3181                 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
3182
3183         if (!quiet || noaction)
3184                 show_stats(fs);
3185
3186         if (noaction)
3187                 exit(0);
3188
3189         if (ext2fs_has_feature_journal_dev(fs->super)) {
3190                 create_journal_dev(fs);
3191                 printf("\n");
3192                 exit(ext2fs_close_free(&fs) ? 1 : 0);
3193         }
3194
3195         if (bad_blocks_filename)
3196                 read_bb_file(fs, &bb_list, bad_blocks_filename);
3197         if (cflag)
3198                 test_disk(fs, &bb_list);
3199         handle_bad_blocks(fs, bb_list);
3200
3201         fs->stride = fs_stride = fs->super->s_raid_stride;
3202         if (!quiet)
3203                 printf("%s", _("Allocating group tables: "));
3204         if (ext2fs_has_feature_flex_bg(fs->super) &&
3205             packed_meta_blocks)
3206                 retval = packed_allocate_tables(fs);
3207         else
3208                 retval = ext2fs_allocate_tables(fs);
3209         if (retval) {
3210                 com_err(program_name, retval, "%s",
3211                         _("while trying to allocate filesystem tables"));
3212                 exit(1);
3213         }
3214         if (!quiet)
3215                 printf("%s", _("done                            \n"));
3216
3217         retval = ext2fs_convert_subcluster_bitmap(fs, &fs->block_map);
3218         if (retval) {
3219                 com_err(program_name, retval, "%s",
3220                         _("\n\twhile converting subcluster bitmap"));
3221                 exit(1);
3222         }
3223
3224         if (super_only) {
3225                 check_plausibility(device_name, CHECK_FS_EXIST, NULL);
3226                 printf(_("%s may be further corrupted by superblock rewrite\n"),
3227                        device_name);
3228                 if (!force)
3229                         proceed_question(proceed_delay);
3230                 fs->super->s_state |= EXT2_ERROR_FS;
3231                 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY);
3232                 /*
3233                  * The command "mke2fs -S" is used to recover
3234                  * corrupted file systems, so do not mark any of the
3235                  * inodes as unused; we want e2fsck to consider all
3236                  * inodes as potentially containing recoverable data.
3237                  */
3238                 if (ext2fs_has_group_desc_csum(fs)) {
3239                         for (i = 0; i < fs->group_desc_count; i++)
3240                                 ext2fs_bg_itable_unused_set(fs, i, 0);
3241                 }
3242         } else {
3243                 /* rsv must be a power of two (64kB is MD RAID sb alignment) */
3244                 blk64_t rsv = 65536 / fs->blocksize;
3245                 blk64_t blocks = ext2fs_blocks_count(fs->super);
3246                 blk64_t start;
3247                 blk64_t ret_blk;
3248
3249 #ifdef ZAP_BOOTBLOCK
3250                 zap_sector(fs, 0, 2);
3251 #endif
3252
3253                 /*
3254                  * Wipe out any old MD RAID (or other) metadata at the end
3255                  * of the device.  This will also verify that the device is
3256                  * as large as we think.  Be careful with very small devices.
3257                  */
3258                 start = (blocks & ~(rsv - 1));
3259                 if (start > rsv)
3260                         start -= rsv;
3261                 if (start > 0)
3262                         retval = ext2fs_zero_blocks2(fs, start, blocks - start,
3263                                                     &ret_blk, NULL);
3264
3265                 if (retval) {
3266                         com_err(program_name, retval,
3267                                 _("while zeroing block %llu at end of filesystem"),
3268                                 ret_blk);
3269                 }
3270                 write_inode_tables(fs, lazy_itable_init, itable_zeroed);
3271                 create_root_dir(fs);
3272                 create_lost_and_found(fs);
3273                 reserve_inodes(fs);
3274                 create_bad_block_inode(fs, bb_list);
3275                 if (ext2fs_has_feature_resize_inode(fs->super)) {
3276                         retval = ext2fs_create_resize_inode(fs);
3277                         if (retval) {
3278                                 com_err("ext2fs_create_resize_inode", retval,
3279                                         "%s",
3280                                 _("while reserving blocks for online resize"));
3281                                 exit(1);
3282                         }
3283                 }
3284         }
3285
3286         if (journal_device) {
3287                 ext2_filsys     jfs;
3288
3289                 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
3290                                         NULL) && !force)
3291                         proceed_question(proceed_delay);
3292                 check_mount(journal_device, force, _("journal"));
3293
3294                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
3295                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
3296                                      fs->blocksize, unix_io_manager, &jfs);
3297                 if (retval) {
3298                         com_err(program_name, retval,
3299                                 _("while trying to open journal device %s\n"),
3300                                 journal_device);
3301                         exit(1);
3302                 }
3303                 if (!quiet) {
3304                         printf(_("Adding journal to device %s: "),
3305                                journal_device);
3306                         fflush(stdout);
3307                 }
3308                 retval = ext2fs_add_journal_device(fs, jfs);
3309                 if(retval) {
3310                         com_err (program_name, retval,
3311                                  _("\n\twhile trying to add journal to device %s"),
3312                                  journal_device);
3313                         exit(1);
3314                 }
3315                 if (!quiet)
3316                         printf("%s", _("done\n"));
3317                 ext2fs_close_free(&jfs);
3318                 free(journal_device);
3319         } else if ((journal_size) ||
3320                    ext2fs_has_feature_journal(&fs_param)) {
3321                 if (super_only) {
3322                         printf("%s", _("Skipping journal creation in super-only mode\n"));
3323                         fs->super->s_journal_inum = EXT2_JOURNAL_INO;
3324                         goto no_journal;
3325                 }
3326
3327                 if (!journal_blocks) {
3328                         ext2fs_clear_feature_journal(fs->super);
3329                         goto no_journal;
3330                 }
3331                 if (!quiet) {
3332                         printf(_("Creating journal (%u blocks): "),
3333                                journal_blocks);
3334                         fflush(stdout);
3335                 }
3336                 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
3337                                                    journal_location,
3338                                                    journal_flags);
3339                 if (retval) {
3340                         com_err(program_name, retval, "%s",
3341                                 _("\n\twhile trying to create journal"));
3342                         exit(1);
3343                 }
3344                 if (!quiet)
3345                         printf("%s", _("done\n"));
3346         }
3347 no_journal:
3348         if (!super_only &&
3349             ext2fs_has_feature_mmp(fs->super)) {
3350                 retval = ext2fs_mmp_init(fs);
3351                 if (retval) {
3352                         fprintf(stderr, "%s",
3353                                 _("\nError while enabling multiple "
3354                                   "mount protection feature."));
3355                         exit(1);
3356                 }
3357                 if (!quiet)
3358                         printf(_("Multiple mount protection is enabled "
3359                                  "with update interval %d seconds.\n"),
3360                                fs->super->s_mmp_update_interval);
3361         }
3362
3363         if (ext2fs_has_feature_bigalloc(&fs_param))
3364                 fix_cluster_bg_counts(fs);
3365         if (ext2fs_has_feature_quota(&fs_param))
3366                 create_quota_inodes(fs);
3367
3368         retval = mk_hugefiles(fs, device_name);
3369         if (retval)
3370                 com_err(program_name, retval, "while creating huge files");
3371         /* Copy files from the specified directory */
3372         if (src_root_dir) {
3373                 if (!quiet)
3374                         printf("%s", _("Copying files into the device: "));
3375
3376                 retval = populate_fs(fs, EXT2_ROOT_INO, src_root_dir,
3377                                      EXT2_ROOT_INO);
3378                 if (retval) {
3379                         com_err(program_name, retval, "%s",
3380                                 _("while populating file system"));
3381                         exit(1);
3382                 } else if (!quiet)
3383                         printf("%s", _("done\n"));
3384         }
3385
3386         if (!quiet)
3387                 printf("%s", _("Writing superblocks and "
3388                        "filesystem accounting information: "));
3389         checkinterval = fs->super->s_checkinterval;
3390         max_mnt_count = fs->super->s_max_mnt_count;
3391         retval = ext2fs_close_free(&fs);
3392         if (retval) {
3393                 com_err(program_name, retval, "%s",
3394                         _("while writing out and closing file system"));
3395                 retval = 1;
3396         } else if (!quiet) {
3397                 printf("%s", _("done\n\n"));
3398                 if (!getenv("MKE2FS_SKIP_CHECK_MSG"))
3399                         print_check_message(max_mnt_count, checkinterval);
3400         }
3401
3402         remove_error_table(&et_ext2_error_table);
3403         remove_error_table(&et_prof_error_table);
3404         profile_release(profile);
3405         for (i=0; fs_types[i]; i++)
3406                 free(fs_types[i]);
3407         free(fs_types);
3408         return retval;
3409 }