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, 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                 EXT4_FEATURE_COMPAT_STABLE_INODES,
1149         /* Incompat */
1150         EXT2_FEATURE_INCOMPAT_FILETYPE|
1151                 EXT3_FEATURE_INCOMPAT_EXTENTS|
1152                 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|
1153                 EXT2_FEATURE_INCOMPAT_META_BG|
1154                 EXT4_FEATURE_INCOMPAT_FLEX_BG|
1155                 EXT4_FEATURE_INCOMPAT_EA_INODE|
1156                 EXT4_FEATURE_INCOMPAT_MMP |
1157                 EXT4_FEATURE_INCOMPAT_64BIT|
1158                 EXT4_FEATURE_INCOMPAT_INLINE_DATA|
1159                 EXT4_FEATURE_INCOMPAT_ENCRYPT |
1160                 EXT4_FEATURE_INCOMPAT_CASEFOLD |
1161                 EXT4_FEATURE_INCOMPAT_CSUM_SEED |
1162                 EXT4_FEATURE_INCOMPAT_LARGEDIR,
1163         /* R/O compat */
1164         EXT2_FEATURE_RO_COMPAT_LARGE_FILE|
1165                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
1166                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
1167                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
1168                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|
1169                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|
1170                 EXT4_FEATURE_RO_COMPAT_BIGALLOC|
1171                 EXT4_FEATURE_RO_COMPAT_QUOTA|
1172                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|
1173                 EXT4_FEATURE_RO_COMPAT_PROJECT|
1174                 EXT4_FEATURE_RO_COMPAT_VERITY
1175 };
1176
1177
1178 static void syntax_err_report(const char *filename, long err, int line_num)
1179 {
1180         fprintf(stderr,
1181                 _("Syntax error in mke2fs config file (%s, line #%d)\n\t%s\n"),
1182                 filename, line_num, error_message(err));
1183         exit(1);
1184 }
1185
1186 static const char *config_fn[] = { ROOT_SYSCONFDIR "/mke2fs.conf", 0 };
1187
1188 static void edit_feature(const char *str, __u32 *compat_array)
1189 {
1190         if (!str)
1191                 return;
1192
1193         if (e2p_edit_feature(str, compat_array, ok_features)) {
1194                 fprintf(stderr, _("Invalid filesystem option set: %s\n"),
1195                         str);
1196                 exit(1);
1197         }
1198 }
1199
1200 static void edit_mntopts(const char *str, __u32 *mntopts)
1201 {
1202         if (!str)
1203                 return;
1204
1205         if (e2p_edit_mntopts(str, mntopts, ~0)) {
1206                 fprintf(stderr, _("Invalid mount option set: %s\n"),
1207                         str);
1208                 exit(1);
1209         }
1210 }
1211
1212 struct str_list {
1213         char **list;
1214         int num;
1215         int max;
1216 };
1217
1218 static errcode_t init_list(struct str_list *sl)
1219 {
1220         sl->num = 0;
1221         sl->max = 1;
1222         sl->list = malloc((sl->max+1) * sizeof(char *));
1223         if (!sl->list)
1224                 return ENOMEM;
1225         sl->list[0] = 0;
1226         return 0;
1227 }
1228
1229 static errcode_t push_string(struct str_list *sl, const char *str)
1230 {
1231         char **new_list;
1232
1233         if (sl->num >= sl->max) {
1234                 sl->max += 2;
1235                 new_list = realloc(sl->list, (sl->max+1) * sizeof(char *));
1236                 if (!new_list)
1237                         return ENOMEM;
1238                 sl->list = new_list;
1239         }
1240         sl->list[sl->num] = malloc(strlen(str)+1);
1241         if (sl->list[sl->num] == 0)
1242                 return ENOMEM;
1243         strcpy(sl->list[sl->num], str);
1244         sl->num++;
1245         sl->list[sl->num] = 0;
1246         return 0;
1247 }
1248
1249 static void print_str_list(char **list)
1250 {
1251         char **cpp;
1252
1253         for (cpp = list; *cpp; cpp++) {
1254                 printf("'%s'", *cpp);
1255                 if (cpp[1])
1256                         fputs(", ", stdout);
1257         }
1258         fputc('\n', stdout);
1259 }
1260
1261 /*
1262  * Return TRUE if the profile has the given subsection
1263  */
1264 static int profile_has_subsection(profile_t prof, const char *section,
1265                                   const char *subsection)
1266 {
1267         void                    *state;
1268         const char              *names[4];
1269         char                    *name;
1270         int                     ret = 0;
1271
1272         names[0] = section;
1273         names[1] = subsection;
1274         names[2] = 0;
1275
1276         if (profile_iterator_create(prof, names,
1277                                     PROFILE_ITER_LIST_SECTION |
1278                                     PROFILE_ITER_RELATIONS_ONLY, &state))
1279                 return 0;
1280
1281         if ((profile_iterator(&state, &name, 0) == 0) && name) {
1282                 free(name);
1283                 ret = 1;
1284         }
1285
1286         profile_iterator_free(&state);
1287         return ret;
1288 }
1289
1290 static char **parse_fs_type(const char *fs_type,
1291                             const char *usage_types,
1292                             struct ext2_super_block *sb,
1293                             blk64_t fs_blocks_count,
1294                             char *progname)
1295 {
1296         const char      *ext_type = 0;
1297         char            *parse_str;
1298         char            *profile_type = 0;
1299         char            *cp, *t;
1300         const char      *size_type;
1301         struct str_list list;
1302         unsigned long long meg;
1303         int             is_hurd = for_hurd(creator_os);
1304
1305         if (init_list(&list))
1306                 return 0;
1307
1308         if (fs_type)
1309                 ext_type = fs_type;
1310         else if (is_hurd)
1311                 ext_type = "ext2";
1312         else if (!strcmp(program_name, "mke3fs"))
1313                 ext_type = "ext3";
1314         else if (!strcmp(program_name, "mke4fs"))
1315                 ext_type = "ext4";
1316         else if (progname) {
1317                 ext_type = strrchr(progname, '/');
1318                 if (ext_type)
1319                         ext_type++;
1320                 else
1321                         ext_type = progname;
1322
1323                 if (!strncmp(ext_type, "mkfs.", 5)) {
1324                         ext_type += 5;
1325                         if (ext_type[0] == 0)
1326                                 ext_type = 0;
1327                 } else
1328                         ext_type = 0;
1329         }
1330
1331         if (!ext_type) {
1332                 profile_get_string(profile, "defaults", "fs_type", 0,
1333                                    "ext2", &profile_type);
1334                 ext_type = profile_type;
1335                 if (!strcmp(ext_type, "ext2") && (journal_size != 0))
1336                         ext_type = "ext3";
1337         }
1338
1339
1340         if (!profile_has_subsection(profile, "fs_types", ext_type) &&
1341             strcmp(ext_type, "ext2")) {
1342                 printf(_("\nYour mke2fs.conf file does not define the "
1343                          "%s filesystem type.\n"), ext_type);
1344                 if (!strcmp(ext_type, "ext3") || !strcmp(ext_type, "ext4") ||
1345                     !strcmp(ext_type, "ext4dev")) {
1346                         printf("%s", _("You probably need to install an "
1347                                        "updated mke2fs.conf file.\n\n"));
1348                 }
1349                 if (!force) {
1350                         printf("%s", _("Aborting...\n"));
1351                         exit(1);
1352                 }
1353         }
1354
1355         meg = (1024 * 1024) / EXT2_BLOCK_SIZE(sb);
1356         if (fs_blocks_count < 3 * meg)
1357                 size_type = "floppy";
1358         else if (fs_blocks_count < 512 * meg)
1359                 size_type = "small";
1360         else if (fs_blocks_count < 4 * 1024 * 1024 * meg)
1361                 size_type = "default";
1362         else if (fs_blocks_count < 16 * 1024 * 1024 * meg)
1363                 size_type = "big";
1364         else
1365                 size_type = "huge";
1366
1367         if (!usage_types)
1368                 usage_types = size_type;
1369
1370         parse_str = malloc(strlen(usage_types)+1);
1371         if (!parse_str) {
1372                 free(profile_type);
1373                 free(list.list);
1374                 return 0;
1375         }
1376         strcpy(parse_str, usage_types);
1377
1378         if (ext_type)
1379                 push_string(&list, ext_type);
1380         cp = parse_str;
1381         while (1) {
1382                 t = strchr(cp, ',');
1383                 if (t)
1384                         *t = '\0';
1385
1386                 if (*cp) {
1387                         if (profile_has_subsection(profile, "fs_types", cp))
1388                                 push_string(&list, cp);
1389                         else if (strcmp(cp, "default") != 0)
1390                                 fprintf(stderr,
1391                                         _("\nWarning: the fs_type %s is not "
1392                                           "defined in mke2fs.conf\n\n"),
1393                                         cp);
1394                 }
1395                 if (t)
1396                         cp = t+1;
1397                 else
1398                         break;
1399         }
1400         free(parse_str);
1401         free(profile_type);
1402         if (is_hurd)
1403                 push_string(&list, "hurd");
1404         return (list.list);
1405 }
1406
1407 char *get_string_from_profile(char **types, const char *opt,
1408                                      const char *def_val)
1409 {
1410         char *ret = 0;
1411         int i;
1412
1413         for (i=0; types[i]; i++);
1414         for (i-=1; i >=0 ; i--) {
1415                 profile_get_string(profile, "fs_types", types[i],
1416                                    opt, 0, &ret);
1417                 if (ret)
1418                         return ret;
1419         }
1420         profile_get_string(profile, "defaults", opt, 0, def_val, &ret);
1421         return (ret);
1422 }
1423
1424 int get_int_from_profile(char **types, const char *opt, int def_val)
1425 {
1426         int ret;
1427         char **cpp;
1428
1429         profile_get_integer(profile, "defaults", opt, 0, def_val, &ret);
1430         for (cpp = types; *cpp; cpp++)
1431                 profile_get_integer(profile, "fs_types", *cpp, opt, ret, &ret);
1432         return ret;
1433 }
1434
1435 static unsigned int get_uint_from_profile(char **types, const char *opt,
1436                                         unsigned int def_val)
1437 {
1438         unsigned int ret;
1439         char **cpp;
1440
1441         profile_get_uint(profile, "defaults", opt, 0, def_val, &ret);
1442         for (cpp = types; *cpp; cpp++)
1443                 profile_get_uint(profile, "fs_types", *cpp, opt, ret, &ret);
1444         return ret;
1445 }
1446
1447 static double get_double_from_profile(char **types, const char *opt,
1448                                       double def_val)
1449 {
1450         double ret;
1451         char **cpp;
1452
1453         profile_get_double(profile, "defaults", opt, 0, def_val, &ret);
1454         for (cpp = types; *cpp; cpp++)
1455                 profile_get_double(profile, "fs_types", *cpp, opt, ret, &ret);
1456         return ret;
1457 }
1458
1459 int get_bool_from_profile(char **types, const char *opt, int def_val)
1460 {
1461         int ret;
1462         char **cpp;
1463
1464         profile_get_boolean(profile, "defaults", opt, 0, def_val, &ret);
1465         for (cpp = types; *cpp; cpp++)
1466                 profile_get_boolean(profile, "fs_types", *cpp, opt, ret, &ret);
1467         return ret;
1468 }
1469
1470 extern const char *mke2fs_default_profile;
1471 static const char *default_files[] = { "<default>", 0 };
1472
1473 #ifdef HAVE_BLKID_PROBE_GET_TOPOLOGY
1474 /*
1475  * Sets the geometry of a device (stripe/stride), and returns the
1476  * device's alignment offset, if any, or a negative error.
1477  */
1478 static int get_device_geometry(const char *file,
1479                                struct ext2_super_block *param,
1480                                unsigned int psector_size)
1481 {
1482         int rc = -1;
1483         unsigned int blocksize;
1484         blkid_probe pr;
1485         blkid_topology tp;
1486         unsigned long min_io;
1487         unsigned long opt_io;
1488         struct stat statbuf;
1489
1490         /* Nothing to do for a regular file */
1491         if (!stat(file, &statbuf) && S_ISREG(statbuf.st_mode))
1492                 return 0;
1493
1494         pr = blkid_new_probe_from_filename(file);
1495         if (!pr)
1496                 goto out;
1497
1498         tp = blkid_probe_get_topology(pr);
1499         if (!tp)
1500                 goto out;
1501
1502         min_io = blkid_topology_get_minimum_io_size(tp);
1503         opt_io = blkid_topology_get_optimal_io_size(tp);
1504         blocksize = EXT2_BLOCK_SIZE(param);
1505         if ((min_io == 0) && (psector_size > blocksize))
1506                 min_io = psector_size;
1507         if ((opt_io == 0) && min_io)
1508                 opt_io = min_io;
1509         if ((opt_io == 0) && (psector_size > blocksize))
1510                 opt_io = psector_size;
1511
1512         /* setting stripe/stride to blocksize is pointless */
1513         if (min_io > blocksize)
1514                 param->s_raid_stride = min_io / blocksize;
1515         if (opt_io > blocksize)
1516                 param->s_raid_stripe_width = opt_io / blocksize;
1517
1518         rc = blkid_topology_get_alignment_offset(tp);
1519 out:
1520         blkid_free_probe(pr);
1521         return rc;
1522 }
1523 #endif
1524
1525 static void PRS(int argc, char *argv[])
1526 {
1527         int             b, c, flags;
1528         int             cluster_size = 0;
1529         char            *tmp, **cpp;
1530         int             explicit_fssize = 0;
1531         int             blocksize = 0;
1532         int             inode_ratio = 0;
1533         int             inode_size = 0;
1534         unsigned long   flex_bg_size = 0;
1535         double          reserved_ratio = -1.0;
1536         int             lsector_size = 0, psector_size = 0;
1537         int             show_version_only = 0, is_device = 0;
1538         unsigned long long num_inodes = 0; /* unsigned long long to catch too-large input */
1539         errcode_t       retval;
1540         char *          oldpath = getenv("PATH");
1541         char *          extended_opts = 0;
1542         char *          fs_type = 0;
1543         char *          usage_types = 0;
1544         /*
1545          * NOTE: A few words about fs_blocks_count and blocksize:
1546          *
1547          * Initially, blocksize is set to zero, which implies 1024.
1548          * If -b is specified, blocksize is updated to the user's value.
1549          *
1550          * Next, the device size or the user's "blocks" command line argument
1551          * is used to set fs_blocks_count; the units are blocksize.
1552          *
1553          * Later, if blocksize hasn't been set and the profile specifies a
1554          * blocksize, then blocksize is updated and fs_blocks_count is scaled
1555          * appropriately.  Note the change in units!
1556          *
1557          * Finally, we complain about fs_blocks_count > 2^32 on a non-64bit fs.
1558          */
1559         blk64_t         fs_blocks_count = 0;
1560         long            sysval;
1561         int             s_opt = -1, r_opt = -1;
1562         char            *fs_features = 0;
1563         int             fs_features_size = 0;
1564         int             use_bsize;
1565         char            *newpath;
1566         int             pathlen = sizeof(PATH_SET) + 1;
1567
1568         if (oldpath)
1569                 pathlen += strlen(oldpath);
1570         newpath = malloc(pathlen);
1571         if (!newpath) {
1572                 fprintf(stderr, "%s",
1573                         _("Couldn't allocate memory for new PATH.\n"));
1574                 exit(1);
1575         }
1576         strcpy(newpath, PATH_SET);
1577
1578         /* Update our PATH to include /sbin  */
1579         if (oldpath) {
1580                 strcat (newpath, ":");
1581                 strcat (newpath, oldpath);
1582         }
1583         putenv (newpath);
1584
1585         /* Determine the system page size if possible */
1586 #ifdef HAVE_SYSCONF
1587 #if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE))
1588 #define _SC_PAGESIZE _SC_PAGE_SIZE
1589 #endif
1590 #ifdef _SC_PAGESIZE
1591         sysval = sysconf(_SC_PAGESIZE);
1592         if (sysval > 0)
1593                 sys_page_size = sysval;
1594 #endif /* _SC_PAGESIZE */
1595 #endif /* HAVE_SYSCONF */
1596
1597         if ((tmp = getenv("MKE2FS_CONFIG")) != NULL)
1598                 config_fn[0] = tmp;
1599         profile_set_syntax_err_cb(syntax_err_report);
1600         retval = profile_init(config_fn, &profile);
1601         if (retval == ENOENT) {
1602                 retval = profile_init(default_files, &profile);
1603                 if (retval)
1604                         goto profile_error;
1605                 retval = profile_set_default(profile, mke2fs_default_profile);
1606                 if (retval)
1607                         goto profile_error;
1608         } else if (retval) {
1609 profile_error:
1610                 fprintf(stderr, _("Couldn't init profile successfully"
1611                                   " (error: %ld).\n"), retval);
1612                 exit(1);
1613         }
1614
1615         setbuf(stdout, NULL);
1616         setbuf(stderr, NULL);
1617         add_error_table(&et_ext2_error_table);
1618         add_error_table(&et_prof_error_table);
1619         memset(&fs_param, 0, sizeof(struct ext2_super_block));
1620         fs_param.s_rev_level = 1;  /* Create revision 1 filesystems now */
1621
1622         if (is_before_linux_ver(2, 2, 0))
1623                 fs_param.s_rev_level = 0;
1624
1625         if (argc && *argv) {
1626                 program_name = get_progname(*argv);
1627
1628                 /* If called as mkfs.ext3, create a journal inode */
1629                 if (!strcmp(program_name, "mkfs.ext3") ||
1630                     !strcmp(program_name, "mke3fs"))
1631                         journal_size = -1;
1632         }
1633
1634         while ((c = getopt (argc, argv,
1635                     "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) {
1636                 switch (c) {
1637                 case 'b':
1638                         blocksize = parse_num_blocks2(optarg, -1);
1639                         b = (blocksize > 0) ? blocksize : -blocksize;
1640                         if (b < EXT2_MIN_BLOCK_SIZE ||
1641                             b > EXT2_MAX_BLOCK_SIZE) {
1642                                 com_err(program_name, 0,
1643                                         _("invalid block size - %s"), optarg);
1644                                 exit(1);
1645                         }
1646                         if (blocksize > 4096)
1647                                 fprintf(stderr, _("Warning: blocksize %d not "
1648                                                   "usable on most systems.\n"),
1649                                         blocksize);
1650                         if (blocksize > 0)
1651                                 fs_param.s_log_block_size =
1652                                         int_log2(blocksize >>
1653                                                  EXT2_MIN_BLOCK_LOG_SIZE);
1654                         break;
1655                 case 'c':       /* Check for bad blocks */
1656                         cflag++;
1657                         break;
1658                 case 'C':
1659                         cluster_size = parse_num_blocks2(optarg, -1);
1660                         if (cluster_size <= EXT2_MIN_CLUSTER_SIZE ||
1661                             cluster_size > EXT2_MAX_CLUSTER_SIZE) {
1662                                 com_err(program_name, 0,
1663                                         _("invalid cluster size - %s"),
1664                                         optarg);
1665                                 exit(1);
1666                         }
1667                         break;
1668                 case 'd':
1669                         src_root_dir = optarg;
1670                         break;
1671                 case 'D':
1672                         direct_io = 1;
1673                         break;
1674                 case 'R':
1675                         com_err(program_name, 0, "%s",
1676                                 _("'-R' is deprecated, use '-E' instead"));
1677                         /* fallthrough */
1678                 case 'E':
1679                         extended_opts = optarg;
1680                         break;
1681                 case 'e':
1682                         if (strcmp(optarg, "continue") == 0)
1683                                 errors_behavior = EXT2_ERRORS_CONTINUE;
1684                         else if (strcmp(optarg, "remount-ro") == 0)
1685                                 errors_behavior = EXT2_ERRORS_RO;
1686                         else if (strcmp(optarg, "panic") == 0)
1687                                 errors_behavior = EXT2_ERRORS_PANIC;
1688                         else {
1689                                 com_err(program_name, 0,
1690                                         _("bad error behavior - %s"),
1691                                         optarg);
1692                                 usage();
1693                         }
1694                         break;
1695                 case 'F':
1696                         force++;
1697                         break;
1698                 case 'g':
1699                         fs_param.s_blocks_per_group = strtoul(optarg, &tmp, 0);
1700                         if (*tmp) {
1701                                 com_err(program_name, 0, "%s",
1702                                 _("Illegal number for blocks per group"));
1703                                 exit(1);
1704                         }
1705                         if ((fs_param.s_blocks_per_group % 8) != 0) {
1706                                 com_err(program_name, 0, "%s",
1707                                 _("blocks per group must be multiple of 8"));
1708                                 exit(1);
1709                         }
1710                         break;
1711                 case 'G':
1712                         flex_bg_size = strtoul(optarg, &tmp, 0);
1713                         if (*tmp) {
1714                                 com_err(program_name, 0, "%s",
1715                                         _("Illegal number for flex_bg size"));
1716                                 exit(1);
1717                         }
1718                         if (flex_bg_size < 1 ||
1719                             (flex_bg_size & (flex_bg_size-1)) != 0) {
1720                                 com_err(program_name, 0, "%s",
1721                                         _("flex_bg size must be a power of 2"));
1722                                 exit(1);
1723                         }
1724                         if (flex_bg_size > MAX_32_NUM) {
1725                                 com_err(program_name, 0,
1726                                 _("flex_bg size (%lu) must be less than"
1727                                 " or equal to 2^31"), flex_bg_size);
1728                                 exit(1);
1729                         }
1730                         break;
1731                 case 'i':
1732                         inode_ratio = parse_num_blocks(optarg, -1);
1733                         if (inode_ratio < EXT2_MIN_BLOCK_SIZE ||
1734                             inode_ratio > EXT2_MAX_BLOCK_SIZE * 1024) {
1735                                 com_err(program_name, 0,
1736                                         _("invalid inode ratio %s (min %d/max %d)"),
1737                                         optarg, EXT2_MIN_BLOCK_SIZE,
1738                                         EXT2_MAX_BLOCK_SIZE * 1024);
1739                                 exit(1);
1740                         }
1741                         break;
1742                 case 'I':
1743                         inode_size = strtoul(optarg, &tmp, 0);
1744                         if (*tmp) {
1745                                 com_err(program_name, 0,
1746                                         _("invalid inode size - %s"), optarg);
1747                                 exit(1);
1748                         }
1749                         break;
1750                 case 'j':
1751                         if (!journal_size)
1752                                 journal_size = -1;
1753                         break;
1754                 case 'J':
1755                         parse_journal_opts(optarg);
1756                         break;
1757                 case 'K':
1758                         fprintf(stderr, "%s",
1759                                 _("Warning: -K option is deprecated and "
1760                                   "should not be used anymore. Use "
1761                                   "\'-E nodiscard\' extended option "
1762                                   "instead!\n"));
1763                         discard = 0;
1764                         break;
1765                 case 'l':
1766                         bad_blocks_filename = realloc(bad_blocks_filename,
1767                                                       strlen(optarg) + 1);
1768                         if (!bad_blocks_filename) {
1769                                 com_err(program_name, ENOMEM, "%s",
1770                                         _("in malloc for bad_blocks_filename"));
1771                                 exit(1);
1772                         }
1773                         strcpy(bad_blocks_filename, optarg);
1774                         break;
1775                 case 'L':
1776                         volume_label = optarg;
1777                         if (strlen(volume_label) > EXT2_LABEL_LEN) {
1778                                 volume_label[EXT2_LABEL_LEN] = '\0';
1779                                 fprintf(stderr, _("Warning: label too long; will be truncated to '%s'\n\n"),
1780                                         volume_label);
1781                         }
1782                         break;
1783                 case 'm':
1784                         reserved_ratio = strtod(optarg, &tmp);
1785                         if ( *tmp || reserved_ratio > 50 ||
1786                              reserved_ratio < 0) {
1787                                 com_err(program_name, 0,
1788                                         _("invalid reserved blocks percent - %s"),
1789                                         optarg);
1790                                 exit(1);
1791                         }
1792                         break;
1793                 case 'M':
1794                         mount_dir = optarg;
1795                         break;
1796                 case 'n':
1797                         noaction++;
1798                         break;
1799                 case 'N':
1800                         num_inodes = strtoul(optarg, &tmp, 0);
1801                         if (*tmp) {
1802                                 com_err(program_name, 0,
1803                                         _("bad num inodes - %s"), optarg);
1804                                         exit(1);
1805                         }
1806                         break;
1807                 case 'o':
1808                         creator_os = optarg;
1809                         break;
1810                 case 'O':
1811                         retval = ext2fs_resize_mem(fs_features_size,
1812                                    fs_features_size + 1 + strlen(optarg),
1813                                                    &fs_features);
1814                         if (retval) {
1815                                 com_err(program_name, retval,
1816                                      _("while allocating fs_feature string"));
1817                                 exit(1);
1818                         }
1819                         if (fs_features_size)
1820                                 strcat(fs_features, ",");
1821                         else
1822                                 fs_features[0] = 0;
1823                         strcat(fs_features, optarg);
1824                         fs_features_size += 1 + strlen(optarg);
1825                         break;
1826                 case 'q':
1827                         quiet = 1;
1828                         break;
1829                 case 'r':
1830                         r_opt = strtoul(optarg, &tmp, 0);
1831                         if (*tmp) {
1832                                 com_err(program_name, 0,
1833                                         _("bad revision level - %s"), optarg);
1834                                 exit(1);
1835                         }
1836                         if (r_opt > EXT2_MAX_SUPP_REV) {
1837                                 com_err(program_name, EXT2_ET_REV_TOO_HIGH,
1838                                         _("while trying to create revision %d"), r_opt);
1839                                 exit(1);
1840                         }
1841                         fs_param.s_rev_level = r_opt;
1842                         break;
1843                 case 's':       /* deprecated */
1844                         s_opt = atoi(optarg);
1845                         break;
1846                 case 'S':
1847                         super_only = 1;
1848                         break;
1849                 case 't':
1850                         if (fs_type) {
1851                                 com_err(program_name, 0, "%s",
1852                                     _("The -t option may only be used once"));
1853                                 exit(1);
1854                         }
1855                         fs_type = strdup(optarg);
1856                         break;
1857                 case 'T':
1858                         if (usage_types) {
1859                                 com_err(program_name, 0, "%s",
1860                                     _("The -T option may only be used once"));
1861                                 exit(1);
1862                         }
1863                         usage_types = strdup(optarg);
1864                         break;
1865                 case 'U':
1866                         fs_uuid = optarg;
1867                         break;
1868                 case 'v':
1869                         verbose = 1;
1870                         break;
1871                 case 'V':
1872                         /* Print version number and exit */
1873                         show_version_only++;
1874                         break;
1875                 case 'z':
1876                         undo_file = optarg;
1877                         break;
1878                 default:
1879                         usage();
1880                 }
1881         }
1882         if ((optind == argc) && !show_version_only)
1883                 usage();
1884         device_name = argv[optind++];
1885
1886         if (!quiet || show_version_only)
1887                 fprintf (stderr, "mke2fs %s (%s)\n", E2FSPROGS_VERSION,
1888                          E2FSPROGS_DATE);
1889
1890         if (show_version_only) {
1891                 fprintf(stderr, _("\tUsing %s\n"),
1892                         error_message(EXT2_ET_BASE));
1893                 exit(0);
1894         }
1895
1896         /*
1897          * If there's no blocksize specified and there is a journal
1898          * device, use it to figure out the blocksize
1899          */
1900         if (blocksize <= 0 && journal_device) {
1901                 ext2_filsys     jfs;
1902                 io_manager      io_ptr;
1903
1904 #ifdef CONFIG_TESTIO_DEBUG
1905                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1906                         io_ptr = test_io_manager;
1907                         test_io_backing_manager = unix_io_manager;
1908                 } else
1909 #endif
1910                         io_ptr = unix_io_manager;
1911                 retval = ext2fs_open(journal_device,
1912                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1913                                      0, io_ptr, &jfs);
1914                 if (retval) {
1915                         com_err(program_name, retval,
1916                                 _("while trying to open journal device %s\n"),
1917                                 journal_device);
1918                         exit(1);
1919                 }
1920                 if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) {
1921                         com_err(program_name, 0,
1922                                 _("Journal dev blocksize (%d) smaller than "
1923                                   "minimum blocksize %d\n"), jfs->blocksize,
1924                                 -blocksize);
1925                         exit(1);
1926                 }
1927                 blocksize = jfs->blocksize;
1928                 printf(_("Using journal device's blocksize: %d\n"), blocksize);
1929                 fs_param.s_log_block_size =
1930                         int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
1931                 ext2fs_close_free(&jfs);
1932         }
1933
1934         if (optind < argc) {
1935                 fs_blocks_count = parse_num_blocks2(argv[optind++],
1936                                                    fs_param.s_log_block_size);
1937                 if (!fs_blocks_count) {
1938                         com_err(program_name, 0,
1939                                 _("invalid blocks '%s' on device '%s'"),
1940                                 argv[optind - 1], device_name);
1941                         exit(1);
1942                 }
1943         }
1944         if (optind < argc)
1945                 usage();
1946
1947         profile_get_integer(profile, "options", "sync_kludge", 0, 0,
1948                             &sync_kludge);
1949         tmp = getenv("MKE2FS_SYNC");
1950         if (tmp)
1951                 sync_kludge = atoi(tmp);
1952
1953         profile_get_integer(profile, "options", "proceed_delay", 0, 0,
1954                             &proceed_delay);
1955
1956         /* The isatty() test is so we don't break existing scripts */
1957         flags = CREATE_FILE;
1958         if (isatty(0) && isatty(1) && !offset)
1959                 flags |= CHECK_FS_EXIST;
1960         if (!quiet)
1961                 flags |= VERBOSE_CREATE;
1962         if (fs_blocks_count == 0)
1963                 flags |= NO_SIZE;
1964         else
1965                 explicit_fssize = 1;
1966         if (!check_plausibility(device_name, flags, &is_device) && !force)
1967                 proceed_question(proceed_delay);
1968
1969         check_mount(device_name, force, _("filesystem"));
1970
1971         /* Determine the size of the device (if possible) */
1972         if (noaction && fs_blocks_count) {
1973                 dev_size = fs_blocks_count;
1974                 retval = 0;
1975         } else
1976 #ifndef _WIN32
1977                 retval = ext2fs_get_device_size2(device_name,
1978                                                  EXT2_BLOCK_SIZE(&fs_param),
1979                                                  &dev_size);
1980 #else
1981                 retval = ext2fs_get_device_size(device_name,
1982                                                 EXT2_BLOCK_SIZE(&fs_param),
1983                                                 &dev_size);
1984 #endif
1985         if (retval && (retval != EXT2_ET_UNIMPLEMENTED)) {
1986                 com_err(program_name, retval, "%s",
1987                         _("while trying to determine filesystem size"));
1988                 exit(1);
1989         }
1990         if (!fs_blocks_count) {
1991                 if (retval == EXT2_ET_UNIMPLEMENTED) {
1992                         com_err(program_name, 0, "%s",
1993                                 _("Couldn't determine device size; you "
1994                                 "must specify\nthe size of the "
1995                                 "filesystem\n"));
1996                         exit(1);
1997                 } else {
1998                         if (dev_size == 0) {
1999                                 com_err(program_name, 0, "%s",
2000                                 _("Device size reported to be zero.  "
2001                                   "Invalid partition specified, or\n\t"
2002                                   "partition table wasn't reread "
2003                                   "after running fdisk, due to\n\t"
2004                                   "a modified partition being busy "
2005                                   "and in use.  You may need to reboot\n\t"
2006                                   "to re-read your partition table.\n"
2007                                   ));
2008                                 exit(1);
2009                         }
2010                         fs_blocks_count = dev_size;
2011                         if (sys_page_size > EXT2_BLOCK_SIZE(&fs_param))
2012                                 fs_blocks_count &= ~((blk64_t) ((sys_page_size /
2013                                              EXT2_BLOCK_SIZE(&fs_param))-1));
2014                 }
2015         } else if (!force && is_device && (fs_blocks_count > dev_size)) {
2016                 com_err(program_name, 0, "%s",
2017                         _("Filesystem larger than apparent device size."));
2018                 proceed_question(proceed_delay);
2019         }
2020
2021         if (!fs_type)
2022                 profile_get_string(profile, "devices", device_name,
2023                                    "fs_type", 0, &fs_type);
2024         if (!usage_types)
2025                 profile_get_string(profile, "devices", device_name,
2026                                    "usage_types", 0, &usage_types);
2027
2028         /*
2029          * We have the file system (or device) size, so we can now
2030          * determine the appropriate file system types so the fs can
2031          * be appropriately configured.
2032          */
2033         fs_types = parse_fs_type(fs_type, usage_types, &fs_param,
2034                                  fs_blocks_count ? fs_blocks_count : dev_size,
2035                                  argv[0]);
2036         if (!fs_types) {
2037                 fprintf(stderr, "%s", _("Failed to parse fs types list\n"));
2038                 exit(1);
2039         }
2040
2041         /* Figure out what features should be enabled */
2042
2043         tmp = NULL;
2044         if (fs_param.s_rev_level != EXT2_GOOD_OLD_REV) {
2045                 tmp = get_string_from_profile(fs_types, "base_features",
2046                       "sparse_super,large_file,filetype,resize_inode,dir_index");
2047                 edit_feature(tmp, &fs_param.s_feature_compat);
2048                 free(tmp);
2049
2050                 /* And which mount options as well */
2051                 tmp = get_string_from_profile(fs_types, "default_mntopts",
2052                                               "acl,user_xattr");
2053                 edit_mntopts(tmp, &fs_param.s_default_mount_opts);
2054                 if (tmp)
2055                         free(tmp);
2056
2057                 for (cpp = fs_types; *cpp; cpp++) {
2058                         tmp = NULL;
2059                         profile_get_string(profile, "fs_types", *cpp,
2060                                            "features", "", &tmp);
2061                         if (tmp && *tmp)
2062                                 edit_feature(tmp, &fs_param.s_feature_compat);
2063                         if (tmp)
2064                                 free(tmp);
2065                 }
2066                 tmp = get_string_from_profile(fs_types, "default_features",
2067                                               "");
2068         }
2069         /* Mask off features which aren't supported by the Hurd */
2070         if (for_hurd(creator_os)) {
2071                 ext2fs_clear_feature_filetype(&fs_param);
2072                 ext2fs_clear_feature_huge_file(&fs_param);
2073                 ext2fs_clear_feature_metadata_csum(&fs_param);
2074                 ext2fs_clear_feature_ea_inode(&fs_param);
2075                 ext2fs_clear_feature_casefold(&fs_param);
2076         }
2077         edit_feature(fs_features ? fs_features : tmp,
2078                      &fs_param.s_feature_compat);
2079         if (tmp)
2080                 free(tmp);
2081         (void) ext2fs_free_mem(&fs_features);
2082         /*
2083          * If the user specified features incompatible with the Hurd, complain
2084          */
2085         if (for_hurd(creator_os)) {
2086                 if (ext2fs_has_feature_filetype(&fs_param)) {
2087                         fprintf(stderr, "%s", _("The HURD does not support the "
2088                                                 "filetype feature.\n"));
2089                         exit(1);
2090                 }
2091                 if (ext2fs_has_feature_huge_file(&fs_param)) {
2092                         fprintf(stderr, "%s", _("The HURD does not support the "
2093                                                 "huge_file feature.\n"));
2094                         exit(1);
2095                 }
2096                 if (ext2fs_has_feature_metadata_csum(&fs_param)) {
2097                         fprintf(stderr, "%s", _("The HURD does not support the "
2098                                                 "metadata_csum feature.\n"));
2099                         exit(1);
2100                 }
2101                 if (ext2fs_has_feature_ea_inode(&fs_param)) {
2102                         fprintf(stderr, "%s", _("The HURD does not support the "
2103                                                 "ea_inode feature.\n"));
2104                         exit(1);
2105                 }
2106         }
2107
2108         /* Get the hardware sector sizes, if available */
2109         retval = ext2fs_get_device_sectsize(device_name, &lsector_size);
2110         if (retval) {
2111                 com_err(program_name, retval, "%s",
2112                         _("while trying to determine hardware sector size"));
2113                 exit(1);
2114         }
2115         retval = ext2fs_get_device_phys_sectsize(device_name, &psector_size);
2116         if (retval) {
2117                 com_err(program_name, retval, "%s",
2118                         _("while trying to determine physical sector size"));
2119                 exit(1);
2120         }
2121
2122         tmp = getenv("MKE2FS_DEVICE_SECTSIZE");
2123         if (tmp != NULL)
2124                 lsector_size = atoi(tmp);
2125         tmp = getenv("MKE2FS_DEVICE_PHYS_SECTSIZE");
2126         if (tmp != NULL)
2127                 psector_size = atoi(tmp);
2128
2129         /* Older kernels may not have physical/logical distinction */
2130         if (!psector_size)
2131                 psector_size = lsector_size;
2132
2133         if (blocksize <= 0) {
2134                 use_bsize = get_int_from_profile(fs_types, "blocksize", 4096);
2135
2136                 if (use_bsize == -1) {
2137                         use_bsize = sys_page_size;
2138                         if (is_before_linux_ver(2, 6, 0) && use_bsize > 4096)
2139                                 use_bsize = 4096;
2140                 }
2141                 if (lsector_size && use_bsize < lsector_size)
2142                         use_bsize = lsector_size;
2143                 if ((blocksize < 0) && (use_bsize < (-blocksize)))
2144                         use_bsize = -blocksize;
2145                 blocksize = use_bsize;
2146                 fs_blocks_count /= (blocksize / 1024);
2147         } else {
2148                 if (blocksize < lsector_size) {                 /* Impossible */
2149                         com_err(program_name, EINVAL, "%s",
2150                                 _("while setting blocksize; too small "
2151                                   "for device\n"));
2152                         exit(1);
2153                 } else if ((blocksize < psector_size) &&
2154                            (psector_size <= sys_page_size)) {   /* Suboptimal */
2155                         fprintf(stderr, _("Warning: specified blocksize %d is "
2156                                 "less than device physical sectorsize %d\n"),
2157                                 blocksize, psector_size);
2158                 }
2159         }
2160
2161         fs_param.s_log_block_size =
2162                 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
2163
2164         /*
2165          * We now need to do a sanity check of fs_blocks_count for
2166          * 32-bit vs 64-bit block number support.
2167          */
2168         if ((fs_blocks_count > MAX_32_NUM) &&
2169             ext2fs_has_feature_64bit(&fs_param))
2170                 ext2fs_clear_feature_resize_inode(&fs_param);
2171         if ((fs_blocks_count > MAX_32_NUM) &&
2172             !ext2fs_has_feature_64bit(&fs_param) &&
2173             get_bool_from_profile(fs_types, "auto_64-bit_support", 0)) {
2174                 ext2fs_set_feature_64bit(&fs_param);
2175                 ext2fs_clear_feature_resize_inode(&fs_param);
2176         }
2177         if ((fs_blocks_count > MAX_32_NUM) &&
2178             !ext2fs_has_feature_64bit(&fs_param)) {
2179                 fprintf(stderr, _("%s: Size of device (0x%llx blocks) %s "
2180                                   "too big to be expressed\n\t"
2181                                   "in 32 bits using a blocksize of %d.\n"),
2182                         program_name, fs_blocks_count, device_name,
2183                         EXT2_BLOCK_SIZE(&fs_param));
2184                 exit(1);
2185         }
2186         /*
2187          * Guard against group descriptor count overflowing... Mostly to avoid
2188          * strange results for absurdly large devices.  This is in log2:
2189          * (blocksize) * (bits per byte) * (maximum number of block groups)
2190          */
2191         if (fs_blocks_count >
2192             (1ULL << (EXT2_BLOCK_SIZE_BITS(&fs_param) + 3 + 32)) - 1) {
2193                 fprintf(stderr, _("%s: Size of device (0x%llx blocks) %s "
2194                                   "too big to create\n\t"
2195                                   "a filesystem using a blocksize of %d.\n"),
2196                         program_name, fs_blocks_count, device_name,
2197                         EXT2_BLOCK_SIZE(&fs_param));
2198                 exit(1);
2199         }
2200
2201         ext2fs_blocks_count_set(&fs_param, fs_blocks_count);
2202
2203         if (ext2fs_has_feature_journal_dev(&fs_param)) {
2204                 int i;
2205
2206                 for (i=0; fs_types[i]; i++) {
2207                         free(fs_types[i]);
2208                         fs_types[i] = 0;
2209                 }
2210                 fs_types[0] = strdup("journal");
2211                 fs_types[1] = 0;
2212         }
2213
2214         if (verbose) {
2215                 fputs(_("fs_types for mke2fs.conf resolution: "), stdout);
2216                 print_str_list(fs_types);
2217         }
2218
2219         if (r_opt == EXT2_GOOD_OLD_REV &&
2220             (fs_param.s_feature_compat || fs_param.s_feature_incompat ||
2221              fs_param.s_feature_ro_compat)) {
2222                 fprintf(stderr, "%s", _("Filesystem features not supported "
2223                                         "with revision 0 filesystems\n"));
2224                 exit(1);
2225         }
2226
2227         if (s_opt > 0) {
2228                 if (r_opt == EXT2_GOOD_OLD_REV) {
2229                         fprintf(stderr, "%s",
2230                                 _("Sparse superblocks not supported "
2231                                   "with revision 0 filesystems\n"));
2232                         exit(1);
2233                 }
2234                 ext2fs_set_feature_sparse_super(&fs_param);
2235         } else if (s_opt == 0)
2236                 ext2fs_clear_feature_sparse_super(&fs_param);
2237
2238         if (journal_size != 0) {
2239                 if (r_opt == EXT2_GOOD_OLD_REV) {
2240                         fprintf(stderr, "%s", _("Journals not supported with "
2241                                                 "revision 0 filesystems\n"));
2242                         exit(1);
2243                 }
2244                 ext2fs_set_feature_journal(&fs_param);
2245         }
2246
2247         /* Get reserved_ratio from profile if not specified on cmd line. */
2248         if (reserved_ratio < 0.0) {
2249                 reserved_ratio = get_double_from_profile(
2250                                         fs_types, "reserved_ratio", 5.0);
2251                 if (reserved_ratio > 50 || reserved_ratio < 0) {
2252                         com_err(program_name, 0,
2253                                 _("invalid reserved blocks percent - %lf"),
2254                                 reserved_ratio);
2255                         exit(1);
2256                 }
2257         }
2258
2259         if (ext2fs_has_feature_journal_dev(&fs_param)) {
2260                 reserved_ratio = 0;
2261                 fs_param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV;
2262                 fs_param.s_feature_compat = 0;
2263                 fs_param.s_feature_ro_compat &=
2264                                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM;
2265         }
2266
2267         /* Check the user's mkfs options for 64bit */
2268         if (ext2fs_has_feature_64bit(&fs_param) &&
2269             !ext2fs_has_feature_extents(&fs_param)) {
2270                 printf("%s", _("Extents MUST be enabled for a 64-bit "
2271                                "filesystem.  Pass -O extents to rectify.\n"));
2272                 exit(1);
2273         }
2274
2275         /* Set first meta blockgroup via an environment variable */
2276         /* (this is mostly for debugging purposes) */
2277         if (ext2fs_has_feature_meta_bg(&fs_param) &&
2278             (tmp = getenv("MKE2FS_FIRST_META_BG")))
2279                 fs_param.s_first_meta_bg = atoi(tmp);
2280         if (ext2fs_has_feature_bigalloc(&fs_param)) {
2281                 if (!cluster_size)
2282                         cluster_size = get_int_from_profile(fs_types,
2283                                                             "cluster_size",
2284                                                             blocksize*16);
2285                 fs_param.s_log_cluster_size =
2286                         int_log2(cluster_size >> EXT2_MIN_CLUSTER_LOG_SIZE);
2287                 if (fs_param.s_log_cluster_size &&
2288                     fs_param.s_log_cluster_size < fs_param.s_log_block_size) {
2289                         com_err(program_name, 0, "%s",
2290                                 _("The cluster size may not be "
2291                                   "smaller than the block size.\n"));
2292                         exit(1);
2293                 }
2294         } else if (cluster_size) {
2295                 com_err(program_name, 0, "%s",
2296                         _("specifying a cluster size requires the "
2297                           "bigalloc feature"));
2298                 exit(1);
2299         } else
2300                 fs_param.s_log_cluster_size = fs_param.s_log_block_size;
2301
2302         if (inode_ratio == 0) {
2303                 inode_ratio = get_int_from_profile(fs_types, "inode_ratio",
2304                                                    8192);
2305                 if (inode_ratio < blocksize)
2306                         inode_ratio = blocksize;
2307                 if (inode_ratio < EXT2_CLUSTER_SIZE(&fs_param))
2308                         inode_ratio = EXT2_CLUSTER_SIZE(&fs_param);
2309         }
2310
2311 #ifdef HAVE_BLKID_PROBE_GET_TOPOLOGY
2312         retval = get_device_geometry(device_name, &fs_param,
2313                                      (unsigned int) psector_size);
2314         if (retval < 0) {
2315                 fprintf(stderr,
2316                         _("warning: Unable to get device geometry for %s\n"),
2317                         device_name);
2318         } else if (retval) {
2319                 printf(_("%s alignment is offset by %lu bytes.\n"),
2320                        device_name, retval);
2321                 printf(_("This may result in very poor performance, "
2322                           "(re)-partitioning suggested.\n"));
2323         }
2324 #endif
2325
2326         num_backups = get_int_from_profile(fs_types, "num_backup_sb", 2);
2327
2328         blocksize = EXT2_BLOCK_SIZE(&fs_param);
2329
2330         /*
2331          * Initialize s_desc_size so that the parse_extended_opts()
2332          * can correctly handle "-E resize=NNN" if the 64-bit option
2333          * is set.
2334          */
2335         if (ext2fs_has_feature_64bit(&fs_param))
2336                 fs_param.s_desc_size = EXT2_MIN_DESC_SIZE_64BIT;
2337
2338         /* This check should happen beyond the last assignment to blocksize */
2339         if (blocksize > sys_page_size) {
2340                 if (!force) {
2341                         com_err(program_name, 0,
2342                                 _("%d-byte blocks too big for system (max %d)"),
2343                                 blocksize, sys_page_size);
2344                         proceed_question(proceed_delay);
2345                 }
2346                 fprintf(stderr, _("Warning: %d-byte blocks too big for system "
2347                                   "(max %d), forced to continue\n"),
2348                         blocksize, sys_page_size);
2349         }
2350
2351         /* Metadata checksumming wasn't totally stable before 3.18. */
2352         if (is_before_linux_ver(3, 18, 0) &&
2353             ext2fs_has_feature_metadata_csum(&fs_param))
2354                 fprintf(stderr, _("Suggestion: Use Linux kernel >= 3.18 for "
2355                         "improved stability of the metadata and journal "
2356                         "checksum features.\n"));
2357
2358         /*
2359          * On newer kernels we do have lazy_itable_init support. So pick the
2360          * right default in case ext4 module is not loaded.
2361          */
2362         if (is_before_linux_ver(2, 6, 37))
2363                 lazy_itable_init = 0;
2364         else
2365                 lazy_itable_init = 1;
2366
2367         if (access("/sys/fs/ext4/features/lazy_itable_init", R_OK) == 0)
2368                 lazy_itable_init = 1;
2369
2370         lazy_itable_init = get_bool_from_profile(fs_types,
2371                                                  "lazy_itable_init",
2372                                                  lazy_itable_init);
2373         discard = get_bool_from_profile(fs_types, "discard" , discard);
2374         journal_flags |= get_bool_from_profile(fs_types,
2375                                                "lazy_journal_init", 0) ?
2376                                                EXT2_MKJOURNAL_LAZYINIT : 0;
2377         journal_flags |= EXT2_MKJOURNAL_NO_MNT_CHECK;
2378
2379         if (!journal_location_string)
2380                 journal_location_string = get_string_from_profile(fs_types,
2381                                                 "journal_location", "");
2382         if ((journal_location == ~0ULL) && journal_location_string &&
2383             *journal_location_string)
2384                 journal_location = parse_num_blocks2(journal_location_string,
2385                                                 fs_param.s_log_block_size);
2386         free(journal_location_string);
2387
2388         packed_meta_blocks = get_bool_from_profile(fs_types,
2389                                                    "packed_meta_blocks", 0);
2390         if (packed_meta_blocks)
2391                 journal_location = 0;
2392
2393         if (ext2fs_has_feature_casefold(&fs_param)) {
2394                 char *ef, *en = get_string_from_profile(fs_types,
2395                                                         "encoding", "utf8");
2396                 int encoding = e2p_str2encoding(en);
2397
2398                 if (encoding < 0) {
2399                         com_err(program_name, 0,
2400                                 _("Unknown filename encoding from profile: %s"),
2401                                 en);
2402                         exit(1);
2403                 }
2404                 free(en);
2405                 fs_param.s_encoding = encoding;
2406                 ef = get_string_from_profile(fs_types, "encoding_flags", NULL);
2407                 if (ef) {
2408                         if (e2p_str2encoding_flags(encoding, ef,
2409                                         &fs_param.s_encoding_flags) < 0) {
2410                                 com_err(program_name, 0,
2411                         _("Unknown encoding flags from profile: %s"), ef);
2412                                 exit(1);
2413                         }
2414                         free(ef);
2415                 } else
2416                         fs_param.s_encoding_flags =
2417                                 e2p_get_encoding_flags(encoding);
2418         }
2419
2420         /* Get options from profile */
2421         for (cpp = fs_types; *cpp; cpp++) {
2422                 tmp = NULL;
2423                 profile_get_string(profile, "fs_types", *cpp, "options", "", &tmp);
2424                         if (tmp && *tmp)
2425                                 parse_extended_opts(&fs_param, tmp);
2426                         free(tmp);
2427         }
2428
2429         if (extended_opts)
2430                 parse_extended_opts(&fs_param, extended_opts);
2431
2432         if (explicit_fssize == 0 && offset > 0) {
2433                 fs_blocks_count -= offset / EXT2_BLOCK_SIZE(&fs_param);
2434                 ext2fs_blocks_count_set(&fs_param, fs_blocks_count);
2435                 fprintf(stderr,
2436                         _("\nWarning: offset specified without an "
2437                           "explicit file system size.\n"
2438                           "Creating a file system with %llu blocks "
2439                           "but this might\n"
2440                           "not be what you want.\n\n"),
2441                         (unsigned long long) fs_blocks_count);
2442         }
2443
2444         if (quotatype_bits & QUOTA_PRJ_BIT)
2445                 ext2fs_set_feature_project(&fs_param);
2446
2447         if (ext2fs_has_feature_project(&fs_param)) {
2448                 quotatype_bits |= QUOTA_PRJ_BIT;
2449                 if (inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
2450                         com_err(program_name, 0,
2451                                 _("%d byte inodes are too small for "
2452                                   "project quota"),
2453                                 inode_size);
2454                         exit(1);
2455                 }
2456                 if (inode_size == 0) {
2457                         inode_size = get_int_from_profile(fs_types,
2458                                                           "inode_size", 0);
2459                         if (inode_size <= EXT2_GOOD_OLD_INODE_SIZE*2)
2460                                 inode_size = EXT2_GOOD_OLD_INODE_SIZE*2;
2461                 }
2462         }
2463
2464         if (ext2fs_has_feature_casefold(&fs_param) &&
2465             ext2fs_has_feature_encrypt(&fs_param)) {
2466                 com_err(program_name, 0, "%s",
2467                         _("The encrypt and casefold features are not "
2468                           "compatible.\nThey can not be both enabled "
2469                           "simultaneously.\n"));
2470                       exit (1);
2471         }
2472
2473         /* Don't allow user to set both metadata_csum and uninit_bg bits. */
2474         if (ext2fs_has_feature_metadata_csum(&fs_param) &&
2475             ext2fs_has_feature_gdt_csum(&fs_param))
2476                 ext2fs_clear_feature_gdt_csum(&fs_param);
2477
2478         /* Can't support bigalloc feature without extents feature */
2479         if (ext2fs_has_feature_bigalloc(&fs_param) &&
2480             !ext2fs_has_feature_extents(&fs_param)) {
2481                 com_err(program_name, 0, "%s",
2482                         _("Can't support bigalloc feature without "
2483                           "extents feature"));
2484                 exit(1);
2485         }
2486
2487         if (ext2fs_has_feature_meta_bg(&fs_param) &&
2488             ext2fs_has_feature_resize_inode(&fs_param)) {
2489                 fprintf(stderr, "%s", _("The resize_inode and meta_bg "
2490                                         "features are not compatible.\n"
2491                                         "They can not be both enabled "
2492                                         "simultaneously.\n"));
2493                 exit(1);
2494         }
2495
2496         if (!quiet && ext2fs_has_feature_bigalloc(&fs_param))
2497                 fprintf(stderr, "%s", _("\nWarning: the bigalloc feature is "
2498                                   "still under development\n"
2499                                   "See https://ext4.wiki.kernel.org/"
2500                                   "index.php/Bigalloc for more information\n\n"));
2501
2502         /*
2503          * Since sparse_super is the default, we would only have a problem
2504          * here if it was explicitly disabled.
2505          */
2506         if (ext2fs_has_feature_resize_inode(&fs_param) &&
2507             !ext2fs_has_feature_sparse_super(&fs_param)) {
2508                 com_err(program_name, 0, "%s",
2509                         _("reserved online resize blocks not supported "
2510                           "on non-sparse filesystem"));
2511                 exit(1);
2512         }
2513
2514         if (fs_param.s_blocks_per_group) {
2515                 if (fs_param.s_blocks_per_group < 256 ||
2516                     fs_param.s_blocks_per_group > 8 * (unsigned) blocksize) {
2517                         com_err(program_name, 0, "%s",
2518                                 _("blocks per group count out of range"));
2519                         exit(1);
2520                 }
2521         }
2522
2523         /*
2524          * If the bigalloc feature is enabled, then the -g option will
2525          * specify the number of clusters per group.
2526          */
2527         if (ext2fs_has_feature_bigalloc(&fs_param)) {
2528                 fs_param.s_clusters_per_group = fs_param.s_blocks_per_group;
2529                 fs_param.s_blocks_per_group = 0;
2530         }
2531
2532         if (inode_size == 0)
2533                 inode_size = get_int_from_profile(fs_types, "inode_size", 0);
2534         if (!flex_bg_size && ext2fs_has_feature_flex_bg(&fs_param))
2535                 flex_bg_size = get_uint_from_profile(fs_types,
2536                                                      "flex_bg_size", 16);
2537         if (flex_bg_size) {
2538                 if (!ext2fs_has_feature_flex_bg(&fs_param)) {
2539                         com_err(program_name, 0, "%s",
2540                                 _("Flex_bg feature not enabled, so "
2541                                   "flex_bg size may not be specified"));
2542                         exit(1);
2543                 }
2544                 fs_param.s_log_groups_per_flex = int_log2(flex_bg_size);
2545         }
2546
2547         if (inode_size && fs_param.s_rev_level >= EXT2_DYNAMIC_REV) {
2548                 if (inode_size < EXT2_GOOD_OLD_INODE_SIZE ||
2549                     inode_size > EXT2_BLOCK_SIZE(&fs_param) ||
2550                     inode_size & (inode_size - 1)) {
2551                         com_err(program_name, 0,
2552                                 _("invalid inode size %d (min %d/max %d)"),
2553                                 inode_size, EXT2_GOOD_OLD_INODE_SIZE,
2554                                 blocksize);
2555                         exit(1);
2556                 }
2557                 fs_param.s_inode_size = inode_size;
2558         }
2559
2560         /*
2561          * If inode size is 128 and inline data is enabled, we need
2562          * to notify users that inline data will never be useful.
2563          */
2564         if (ext2fs_has_feature_inline_data(&fs_param) &&
2565             fs_param.s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
2566                 com_err(program_name, 0,
2567                         _("%d byte inodes are too small for inline data; "
2568                           "specify larger size"),
2569                         fs_param.s_inode_size);
2570                 exit(1);
2571         }
2572
2573         /* Make sure number of inodes specified will fit in 32 bits */
2574         if (num_inodes == 0) {
2575                 unsigned long long n;
2576                 n = ext2fs_blocks_count(&fs_param) * blocksize / inode_ratio;
2577                 if (n > MAX_32_NUM) {
2578                         if (ext2fs_has_feature_64bit(&fs_param))
2579                                 num_inodes = MAX_32_NUM;
2580                         else {
2581                                 com_err(program_name, 0,
2582                                         _("too many inodes (%llu), raise "
2583                                           "inode ratio?"), n);
2584                                 exit(1);
2585                         }
2586                 }
2587         } else if (num_inodes > MAX_32_NUM) {
2588                 com_err(program_name, 0,
2589                         _("too many inodes (%llu), specify < 2^32 inodes"),
2590                           num_inodes);
2591                 exit(1);
2592         }
2593         /*
2594          * Calculate number of inodes based on the inode ratio
2595          */
2596         fs_param.s_inodes_count = num_inodes ? num_inodes :
2597                 (ext2fs_blocks_count(&fs_param) * blocksize) / inode_ratio;
2598
2599         if ((((unsigned long long)fs_param.s_inodes_count) *
2600              (inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE)) >=
2601             ((ext2fs_blocks_count(&fs_param)) *
2602              EXT2_BLOCK_SIZE(&fs_param))) {
2603                 com_err(program_name, 0, _("inode_size (%u) * inodes_count "
2604                                           "(%u) too big for a\n\t"
2605                                           "filesystem with %llu blocks, "
2606                                           "specify higher inode_ratio (-i)\n\t"
2607                                           "or lower inode count (-N).\n"),
2608                         inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE,
2609                         fs_param.s_inodes_count,
2610                         (unsigned long long) ext2fs_blocks_count(&fs_param));
2611                 exit(1);
2612         }
2613
2614         /*
2615          * Calculate number of blocks to reserve
2616          */
2617         ext2fs_r_blocks_count_set(&fs_param, reserved_ratio *
2618                                   ext2fs_blocks_count(&fs_param) / 100.0);
2619
2620         if (ext2fs_has_feature_sparse_super2(&fs_param)) {
2621                 if (num_backups >= 1)
2622                         fs_param.s_backup_bgs[0] = 1;
2623                 if (num_backups >= 2)
2624                         fs_param.s_backup_bgs[1] = ~0;
2625         }
2626
2627         free(fs_type);
2628         free(usage_types);
2629 }
2630
2631 static int should_do_undo(const char *name)
2632 {
2633         errcode_t retval;
2634         io_channel channel;
2635         __u16   s_magic;
2636         struct ext2_super_block super;
2637         io_manager manager = unix_io_manager;
2638         int csum_flag, force_undo;
2639
2640         csum_flag = ext2fs_has_feature_metadata_csum(&fs_param) ||
2641                     ext2fs_has_feature_gdt_csum(&fs_param);
2642         force_undo = get_int_from_profile(fs_types, "force_undo", 0);
2643         if (!force_undo && (!csum_flag || !lazy_itable_init))
2644                 return 0;
2645
2646         retval = manager->open(name, IO_FLAG_EXCLUSIVE,  &channel);
2647         if (retval) {
2648                 /*
2649                  * We don't handle error cases instead we
2650                  * declare that the file system doesn't exist
2651                  * and let the rest of mke2fs take care of
2652                  * error
2653                  */
2654                 retval = 0;
2655                 goto open_err_out;
2656         }
2657
2658         io_channel_set_blksize(channel, SUPERBLOCK_OFFSET);
2659         retval = io_channel_read_blk64(channel, 1, -SUPERBLOCK_SIZE, &super);
2660         if (retval) {
2661                 retval = 0;
2662                 goto err_out;
2663         }
2664
2665 #if defined(WORDS_BIGENDIAN)
2666         s_magic = ext2fs_swab16(super.s_magic);
2667 #else
2668         s_magic = super.s_magic;
2669 #endif
2670
2671         if (s_magic == EXT2_SUPER_MAGIC)
2672                 retval = 1;
2673
2674 err_out:
2675         io_channel_close(channel);
2676
2677 open_err_out:
2678
2679         return retval;
2680 }
2681
2682 static int mke2fs_setup_tdb(const char *name, io_manager *io_ptr)
2683 {
2684         errcode_t retval = ENOMEM;
2685         char *tdb_dir = NULL, *tdb_file = NULL;
2686         char *dev_name, *tmp_name;
2687         int free_tdb_dir = 0;
2688
2689         /* (re)open a specific undo file */
2690         if (undo_file && undo_file[0] != 0) {
2691                 retval = set_undo_io_backing_manager(*io_ptr);
2692                 if (retval)
2693                         goto err;
2694                 *io_ptr = undo_io_manager;
2695                 retval = set_undo_io_backup_file(undo_file);
2696                 if (retval)
2697                         goto err;
2698                 printf(_("Overwriting existing filesystem; this can be undone "
2699                          "using the command:\n"
2700                          "    e2undo %s %s\n\n"), undo_file, name);
2701                 return retval;
2702         }
2703
2704         /*
2705          * Configuration via a conf file would be
2706          * nice
2707          */
2708         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2709         if (!tdb_dir) {
2710                 profile_get_string(profile, "defaults",
2711                                    "undo_dir", 0, "/var/lib/e2fsprogs",
2712                                    &tdb_dir);
2713                 free_tdb_dir = 1;
2714         }
2715
2716         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2717             access(tdb_dir, W_OK)) {
2718                 if (free_tdb_dir)
2719                         free(tdb_dir);
2720                 return 0;
2721         }
2722
2723         tmp_name = strdup(name);
2724         if (!tmp_name)
2725                 goto errout;
2726         dev_name = basename(tmp_name);
2727         tdb_file = malloc(strlen(tdb_dir) + 8 + strlen(dev_name) + 7 + 1);
2728         if (!tdb_file) {
2729                 free(tmp_name);
2730                 goto errout;
2731         }
2732         sprintf(tdb_file, "%s/mke2fs-%s.e2undo", tdb_dir, dev_name);
2733         free(tmp_name);
2734
2735         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2736                 retval = errno;
2737                 com_err(program_name, retval,
2738                         _("while trying to delete %s"), tdb_file);
2739                 goto errout;
2740         }
2741
2742         retval = set_undo_io_backing_manager(*io_ptr);
2743         if (retval)
2744                 goto errout;
2745         *io_ptr = undo_io_manager;
2746         retval = set_undo_io_backup_file(tdb_file);
2747         if (retval)
2748                 goto errout;
2749         printf(_("Overwriting existing filesystem; this can be undone "
2750                  "using the command:\n"
2751                  "    e2undo %s %s\n\n"), tdb_file, name);
2752
2753         if (free_tdb_dir)
2754                 free(tdb_dir);
2755         free(tdb_file);
2756         return 0;
2757
2758 errout:
2759         if (free_tdb_dir)
2760                 free(tdb_dir);
2761         free(tdb_file);
2762 err:
2763         com_err(program_name, retval, "%s",
2764                 _("while trying to setup undo file\n"));
2765         return retval;
2766 }
2767
2768 static int mke2fs_discard_device(ext2_filsys fs)
2769 {
2770         struct ext2fs_numeric_progress_struct progress;
2771         blk64_t blocks = ext2fs_blocks_count(fs->super);
2772         blk64_t count = DISCARD_STEP_MB;
2773         blk64_t cur;
2774         int retval = 0;
2775
2776         /*
2777          * Let's try if discard really works on the device, so
2778          * we do not print numeric progress resulting in failure
2779          * afterwards.
2780          */
2781         retval = io_channel_discard(fs->io, 0, fs->blocksize);
2782         if (retval)
2783                 return retval;
2784         cur = fs->blocksize;
2785
2786         count *= (1024 * 1024);
2787         count /= fs->blocksize;
2788
2789         ext2fs_numeric_progress_init(fs, &progress,
2790                                      _("Discarding device blocks: "),
2791                                      blocks);
2792         while (cur < blocks) {
2793                 ext2fs_numeric_progress_update(fs, &progress, cur);
2794
2795                 if (cur + count > blocks)
2796                         count = blocks - cur;
2797
2798                 retval = io_channel_discard(fs->io, cur, count);
2799                 if (retval)
2800                         break;
2801                 cur += count;
2802         }
2803
2804         if (retval) {
2805                 ext2fs_numeric_progress_close(fs, &progress,
2806                                       _("failed - "));
2807                 if (!quiet)
2808                         printf("%s\n",error_message(retval));
2809         } else
2810                 ext2fs_numeric_progress_close(fs, &progress,
2811                                       _("done                            \n"));
2812
2813         return retval;
2814 }
2815
2816 static void fix_cluster_bg_counts(ext2_filsys fs)
2817 {
2818         blk64_t         block, num_blocks, last_block, next;
2819         blk64_t         tot_free = 0;
2820         errcode_t       retval;
2821         dgrp_t          group = 0;
2822         int             grp_free = 0;
2823
2824         num_blocks = ext2fs_blocks_count(fs->super);
2825         last_block = ext2fs_group_last_block2(fs, group);
2826         block = fs->super->s_first_data_block;
2827         while (block < num_blocks) {
2828                 retval = ext2fs_find_first_zero_block_bitmap2(fs->block_map,
2829                                                 block, last_block, &next);
2830                 if (retval == 0)
2831                         block = next;
2832                 else {
2833                         block = last_block + 1;
2834                         goto next_bg;
2835                 }
2836
2837                 retval = ext2fs_find_first_set_block_bitmap2(fs->block_map,
2838                                                 block, last_block, &next);
2839                 if (retval)
2840                         next = last_block + 1;
2841                 grp_free += EXT2FS_NUM_B2C(fs, next - block);
2842                 tot_free += next - block;
2843                 block = next;
2844
2845                 if (block > last_block) {
2846                 next_bg:
2847                         ext2fs_bg_free_blocks_count_set(fs, group, grp_free);
2848                         ext2fs_group_desc_csum_set(fs, group);
2849                         grp_free = 0;
2850                         group++;
2851                         last_block = ext2fs_group_last_block2(fs, group);
2852                 }
2853         }
2854         ext2fs_free_blocks_count_set(fs->super, tot_free);
2855 }
2856
2857 static int create_quota_inodes(ext2_filsys fs)
2858 {
2859         quota_ctx_t qctx;
2860         errcode_t retval;
2861
2862         retval = quota_init_context(&qctx, fs, quotatype_bits);
2863         if (retval) {
2864                 com_err(program_name, retval,
2865                         _("while initializing quota context"));
2866                 exit(1);
2867         }
2868         quota_compute_usage(qctx);
2869         retval = quota_write_inode(qctx, quotatype_bits);
2870         if (retval) {
2871                 com_err(program_name, retval,
2872                         _("while writing quota inodes"));
2873                 exit(1);
2874         }
2875         quota_release_context(&qctx);
2876
2877         return 0;
2878 }
2879
2880 static errcode_t set_error_behavior(ext2_filsys fs)
2881 {
2882         char    *arg = NULL;
2883         short   errors = fs->super->s_errors;
2884
2885         arg = get_string_from_profile(fs_types, "errors", NULL);
2886         if (arg == NULL)
2887                 goto try_user;
2888
2889         if (strcmp(arg, "continue") == 0)
2890                 errors = EXT2_ERRORS_CONTINUE;
2891         else if (strcmp(arg, "remount-ro") == 0)
2892                 errors = EXT2_ERRORS_RO;
2893         else if (strcmp(arg, "panic") == 0)
2894                 errors = EXT2_ERRORS_PANIC;
2895         else {
2896                 com_err(program_name, 0,
2897                         _("bad error behavior in profile - %s"),
2898                         arg);
2899                 free(arg);
2900                 return EXT2_ET_INVALID_ARGUMENT;
2901         }
2902         free(arg);
2903
2904 try_user:
2905         if (errors_behavior)
2906                 errors = errors_behavior;
2907
2908         fs->super->s_errors = errors;
2909         return 0;
2910 }
2911
2912 int main (int argc, char *argv[])
2913 {
2914         errcode_t       retval = 0;
2915         ext2_filsys     fs;
2916         badblocks_list  bb_list = 0;
2917         unsigned int    journal_blocks = 0;
2918         unsigned int    i, checkinterval;
2919         int             max_mnt_count;
2920         int             val, hash_alg;
2921         int             flags;
2922         int             old_bitmaps;
2923         io_manager      io_ptr;
2924         char            opt_string[40];
2925         char            *hash_alg_str;
2926         int             itable_zeroed = 0;
2927
2928 #ifdef ENABLE_NLS
2929         setlocale(LC_MESSAGES, "");
2930         setlocale(LC_CTYPE, "");
2931         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2932         textdomain(NLS_CAT_NAME);
2933         set_com_err_gettext(gettext);
2934 #endif
2935         PRS(argc, argv);
2936
2937 #ifdef CONFIG_TESTIO_DEBUG
2938         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
2939                 io_ptr = test_io_manager;
2940                 test_io_backing_manager = unix_io_manager;
2941         } else
2942 #endif
2943                 io_ptr = unix_io_manager;
2944
2945         if (undo_file != NULL || should_do_undo(device_name)) {
2946                 retval = mke2fs_setup_tdb(device_name, &io_ptr);
2947                 if (retval)
2948                         exit(1);
2949         }
2950
2951         /*
2952          * Initialize the superblock....
2953          */
2954         flags = EXT2_FLAG_EXCLUSIVE;
2955         if (direct_io)
2956                 flags |= EXT2_FLAG_DIRECT_IO;
2957         profile_get_boolean(profile, "options", "old_bitmaps", 0, 0,
2958                             &old_bitmaps);
2959         if (!old_bitmaps)
2960                 flags |= EXT2_FLAG_64BITS;
2961         /*
2962          * By default, we print how many inode tables or block groups
2963          * or whatever we've written so far.  The quiet flag disables
2964          * this, along with a lot of other output.
2965          */
2966         if (!quiet)
2967                 flags |= EXT2_FLAG_PRINT_PROGRESS;
2968         if (android_sparse_file) {
2969                 char *android_sparse_params = malloc(strlen(device_name) + 48);
2970
2971                 if (!android_sparse_params) {
2972                         com_err(program_name, ENOMEM, "%s",
2973                                 _("in malloc for android_sparse_params"));
2974                         exit(1);
2975                 }
2976                 sprintf(android_sparse_params, "(%s):%u:%u",
2977                          device_name, fs_param.s_blocks_count,
2978                          1024 << fs_param.s_log_block_size);
2979                 retval = ext2fs_initialize(android_sparse_params, flags,
2980                                            &fs_param, sparse_io_manager, &fs);
2981                 free(android_sparse_params);
2982         } else
2983                 retval = ext2fs_initialize(device_name, flags, &fs_param,
2984                                            io_ptr, &fs);
2985         if (retval) {
2986                 com_err(device_name, retval, "%s",
2987                         _("while setting up superblock"));
2988                 exit(1);
2989         }
2990         fs->progress_ops = &ext2fs_numeric_progress_ops;
2991
2992         /* Set the error behavior */
2993         retval = set_error_behavior(fs);
2994         if (retval)
2995                 usage();
2996
2997         /* Check the user's mkfs options for metadata checksumming */
2998         if (!quiet &&
2999             !ext2fs_has_feature_journal_dev(fs->super) &&
3000             ext2fs_has_feature_metadata_csum(fs->super)) {
3001                 if (!ext2fs_has_feature_extents(fs->super))
3002                         printf("%s",
3003                                _("Extents are not enabled.  The file extent "
3004                                  "tree can be checksummed, whereas block maps "
3005                                  "cannot.  Not enabling extents reduces the "
3006                                  "coverage of metadata checksumming.  "
3007                                  "Pass -O extents to rectify.\n"));
3008                 if (!ext2fs_has_feature_64bit(fs->super))
3009                         printf("%s",
3010                                _("64-bit filesystem support is not enabled.  "
3011                                  "The larger fields afforded by this feature "
3012                                  "enable full-strength checksumming.  "
3013                                  "Pass -O 64bit to rectify.\n"));
3014         }
3015
3016         if (ext2fs_has_feature_csum_seed(fs->super) &&
3017             !ext2fs_has_feature_metadata_csum(fs->super)) {
3018                 printf("%s", _("The metadata_csum_seed feature "
3019                                "requires the metadata_csum feature.\n"));
3020                 exit(1);
3021         }
3022
3023         /* Calculate journal blocks */
3024         if (!journal_device && ((journal_size) ||
3025             ext2fs_has_feature_journal(&fs_param)))
3026                 journal_blocks = figure_journal_size(journal_size, fs);
3027
3028         sprintf(opt_string, "tdb_data_size=%d", fs->blocksize <= 4096 ?
3029                 32768 : fs->blocksize * 8);
3030         io_channel_set_options(fs->io, opt_string);
3031         if (offset) {
3032                 sprintf(opt_string, "offset=%llu", offset);
3033                 io_channel_set_options(fs->io, opt_string);
3034         }
3035
3036         /* Can't undo discard ... */
3037         if (!noaction && discard && dev_size && (io_ptr != undo_io_manager)) {
3038                 retval = mke2fs_discard_device(fs);
3039                 if (!retval && io_channel_discard_zeroes_data(fs->io)) {
3040                         if (verbose)
3041                                 printf("%s",
3042                                        _("Discard succeeded and will return "
3043                                          "0s - skipping inode table wipe\n"));
3044                         lazy_itable_init = 1;
3045                         itable_zeroed = 1;
3046                         zero_hugefile = 0;
3047                 }
3048         }
3049
3050         if (fs_param.s_flags & EXT2_FLAGS_TEST_FILESYS)
3051                 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
3052
3053         if (ext2fs_has_feature_flex_bg(&fs_param) ||
3054             ext2fs_has_feature_huge_file(&fs_param) ||
3055             ext2fs_has_feature_gdt_csum(&fs_param) ||
3056             ext2fs_has_feature_dir_nlink(&fs_param) ||
3057             ext2fs_has_feature_metadata_csum(&fs_param) ||
3058             ext2fs_has_feature_extra_isize(&fs_param))
3059                 fs->super->s_kbytes_written = 1;
3060
3061         /*
3062          * Wipe out the old on-disk superblock
3063          */
3064         if (!noaction)
3065                 zap_sector(fs, 2, 6);
3066
3067         /*
3068          * Parse or generate a UUID for the filesystem
3069          */
3070         if (fs_uuid) {
3071                 if ((strcasecmp(fs_uuid, "null") == 0) ||
3072                     (strcasecmp(fs_uuid, "clear") == 0)) {
3073                         uuid_clear(fs->super->s_uuid);
3074                 } else if (strcasecmp(fs_uuid, "time") == 0) {
3075                         uuid_generate_time(fs->super->s_uuid);
3076                 } else if (strcasecmp(fs_uuid, "random") == 0) {
3077                         uuid_generate(fs->super->s_uuid);
3078                 } else if (uuid_parse(fs_uuid, fs->super->s_uuid) != 0) {
3079                         com_err(device_name, 0, "could not parse UUID: %s\n",
3080                                 fs_uuid);
3081                         exit(1);
3082                 }
3083         } else
3084                 uuid_generate(fs->super->s_uuid);
3085
3086         if (ext2fs_has_feature_csum_seed(fs->super))
3087                 fs->super->s_checksum_seed = ext2fs_crc32c_le(~0,
3088                                 fs->super->s_uuid, sizeof(fs->super->s_uuid));
3089
3090         ext2fs_init_csum_seed(fs);
3091
3092         /*
3093          * Initialize the directory index variables
3094          */
3095         hash_alg_str = get_string_from_profile(fs_types, "hash_alg",
3096                                                "half_md4");
3097         hash_alg = e2p_string2hash(hash_alg_str);
3098         free(hash_alg_str);
3099         fs->super->s_def_hash_version = (hash_alg >= 0) ? hash_alg :
3100                 EXT2_HASH_HALF_MD4;
3101
3102         if (memcmp(fs_param.s_hash_seed, zero_buf,
3103                 sizeof(fs_param.s_hash_seed)) != 0) {
3104                 memcpy(fs->super->s_hash_seed, fs_param.s_hash_seed,
3105                         sizeof(fs->super->s_hash_seed));
3106         } else
3107                 uuid_generate((unsigned char *) fs->super->s_hash_seed);
3108
3109         /*
3110          * Periodic checks can be enabled/disabled via config file.
3111          * Note we override the kernel include file's idea of what the default
3112          * check interval (never) should be.  It's a good idea to check at
3113          * least *occasionally*, specially since servers will never rarely get
3114          * to reboot, since Linux is so robust these days.  :-)
3115          *
3116          * 180 days (six months) seems like a good value.
3117          */
3118 #ifdef EXT2_DFL_CHECKINTERVAL
3119 #undef EXT2_DFL_CHECKINTERVAL
3120 #endif
3121 #define EXT2_DFL_CHECKINTERVAL (86400L * 180L)
3122
3123         if (get_bool_from_profile(fs_types, "enable_periodic_fsck", 0)) {
3124                 fs->super->s_checkinterval = EXT2_DFL_CHECKINTERVAL;
3125                 fs->super->s_max_mnt_count = EXT2_DFL_MAX_MNT_COUNT;
3126                 /*
3127                  * Add "jitter" to the superblock's check interval so that we
3128                  * don't check all the filesystems at the same time.  We use a
3129                  * kludgy hack of using the UUID to derive a random jitter value
3130                  */
3131                 for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++)
3132                         val += fs->super->s_uuid[i];
3133                 fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT;
3134         } else
3135                 fs->super->s_max_mnt_count = -1;
3136
3137         /*
3138          * Override the creator OS, if applicable
3139          */
3140         if (creator_os && !set_os(fs->super, creator_os)) {
3141                 com_err (program_name, 0, _("unknown os - %s"), creator_os);
3142                 exit(1);
3143         }
3144
3145         /*
3146          * For the Hurd, we will turn off filetype since it doesn't
3147          * support it.
3148          */
3149         if (fs->super->s_creator_os == EXT2_OS_HURD)
3150                 ext2fs_clear_feature_filetype(fs->super);
3151
3152         /*
3153          * Set the volume label...
3154          */
3155         if (volume_label) {
3156                 memset(fs->super->s_volume_name, 0,
3157                        sizeof(fs->super->s_volume_name));
3158                 strncpy(fs->super->s_volume_name, volume_label,
3159                         sizeof(fs->super->s_volume_name));
3160         }
3161
3162         /*
3163          * Set the last mount directory
3164          */
3165         if (mount_dir) {
3166                 memset(fs->super->s_last_mounted, 0,
3167                        sizeof(fs->super->s_last_mounted));
3168                 strncpy(fs->super->s_last_mounted, mount_dir,
3169                         sizeof(fs->super->s_last_mounted));
3170         }
3171
3172         /* Set current default encryption algorithms for data and
3173          * filename encryption */
3174         if (ext2fs_has_feature_encrypt(fs->super)) {
3175                 fs->super->s_encrypt_algos[0] =
3176                         EXT4_ENCRYPTION_MODE_AES_256_XTS;
3177                 fs->super->s_encrypt_algos[1] =
3178                         EXT4_ENCRYPTION_MODE_AES_256_CTS;
3179         }
3180
3181         if (ext2fs_has_feature_metadata_csum(fs->super))
3182                 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
3183
3184         if (!quiet || noaction)
3185                 show_stats(fs);
3186
3187         if (noaction)
3188                 exit(0);
3189
3190         if (ext2fs_has_feature_journal_dev(fs->super)) {
3191                 create_journal_dev(fs);
3192                 printf("\n");
3193                 exit(ext2fs_close_free(&fs) ? 1 : 0);
3194         }
3195
3196         if (bad_blocks_filename)
3197                 read_bb_file(fs, &bb_list, bad_blocks_filename);
3198         if (cflag)
3199                 test_disk(fs, &bb_list);
3200         handle_bad_blocks(fs, bb_list);
3201
3202         fs->stride = fs_stride = fs->super->s_raid_stride;
3203         if (!quiet)
3204                 printf("%s", _("Allocating group tables: "));
3205         if (ext2fs_has_feature_flex_bg(fs->super) &&
3206             packed_meta_blocks)
3207                 retval = packed_allocate_tables(fs);
3208         else
3209                 retval = ext2fs_allocate_tables(fs);
3210         if (retval) {
3211                 com_err(program_name, retval, "%s",
3212                         _("while trying to allocate filesystem tables"));
3213                 exit(1);
3214         }
3215         if (!quiet)
3216                 printf("%s", _("done                            \n"));
3217
3218         retval = ext2fs_convert_subcluster_bitmap(fs, &fs->block_map);
3219         if (retval) {
3220                 com_err(program_name, retval, "%s",
3221                         _("\n\twhile converting subcluster bitmap"));
3222                 exit(1);
3223         }
3224
3225         if (super_only) {
3226                 check_plausibility(device_name, CHECK_FS_EXIST, NULL);
3227                 printf(_("%s may be further corrupted by superblock rewrite\n"),
3228                        device_name);
3229                 if (!force)
3230                         proceed_question(proceed_delay);
3231                 fs->super->s_state |= EXT2_ERROR_FS;
3232                 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY);
3233                 /*
3234                  * The command "mke2fs -S" is used to recover
3235                  * corrupted file systems, so do not mark any of the
3236                  * inodes as unused; we want e2fsck to consider all
3237                  * inodes as potentially containing recoverable data.
3238                  */
3239                 if (ext2fs_has_group_desc_csum(fs)) {
3240                         for (i = 0; i < fs->group_desc_count; i++)
3241                                 ext2fs_bg_itable_unused_set(fs, i, 0);
3242                 }
3243         } else {
3244                 /* rsv must be a power of two (64kB is MD RAID sb alignment) */
3245                 blk64_t rsv = 65536 / fs->blocksize;
3246                 blk64_t blocks = ext2fs_blocks_count(fs->super);
3247                 blk64_t start;
3248                 blk64_t ret_blk;
3249
3250 #ifdef ZAP_BOOTBLOCK
3251                 zap_sector(fs, 0, 2);
3252 #endif
3253
3254                 /*
3255                  * Wipe out any old MD RAID (or other) metadata at the end
3256                  * of the device.  This will also verify that the device is
3257                  * as large as we think.  Be careful with very small devices.
3258                  */
3259                 start = (blocks & ~(rsv - 1));
3260                 if (start > rsv)
3261                         start -= rsv;
3262                 if (start > 0)
3263                         retval = ext2fs_zero_blocks2(fs, start, blocks - start,
3264                                                     &ret_blk, NULL);
3265
3266                 if (retval) {
3267                         com_err(program_name, retval,
3268                                 _("while zeroing block %llu at end of filesystem"),
3269                                 ret_blk);
3270                 }
3271                 write_inode_tables(fs, lazy_itable_init, itable_zeroed);
3272                 create_root_dir(fs);
3273                 create_lost_and_found(fs);
3274                 reserve_inodes(fs);
3275                 create_bad_block_inode(fs, bb_list);
3276                 if (ext2fs_has_feature_resize_inode(fs->super)) {
3277                         retval = ext2fs_create_resize_inode(fs);
3278                         if (retval) {
3279                                 com_err("ext2fs_create_resize_inode", retval,
3280                                         "%s",
3281                                 _("while reserving blocks for online resize"));
3282                                 exit(1);
3283                         }
3284                 }
3285         }
3286
3287         if (journal_device) {
3288                 ext2_filsys     jfs;
3289
3290                 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
3291                                         NULL) && !force)
3292                         proceed_question(proceed_delay);
3293                 check_mount(journal_device, force, _("journal"));
3294
3295                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
3296                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
3297                                      fs->blocksize, unix_io_manager, &jfs);
3298                 if (retval) {
3299                         com_err(program_name, retval,
3300                                 _("while trying to open journal device %s\n"),
3301                                 journal_device);
3302                         exit(1);
3303                 }
3304                 if (!quiet) {
3305                         printf(_("Adding journal to device %s: "),
3306                                journal_device);
3307                         fflush(stdout);
3308                 }
3309                 retval = ext2fs_add_journal_device(fs, jfs);
3310                 if(retval) {
3311                         com_err (program_name, retval,
3312                                  _("\n\twhile trying to add journal to device %s"),
3313                                  journal_device);
3314                         exit(1);
3315                 }
3316                 if (!quiet)
3317                         printf("%s", _("done\n"));
3318                 ext2fs_close_free(&jfs);
3319                 free(journal_device);
3320         } else if ((journal_size) ||
3321                    ext2fs_has_feature_journal(&fs_param)) {
3322                 if (super_only) {
3323                         printf("%s", _("Skipping journal creation in super-only mode\n"));
3324                         fs->super->s_journal_inum = EXT2_JOURNAL_INO;
3325                         goto no_journal;
3326                 }
3327
3328                 if (!journal_blocks) {
3329                         ext2fs_clear_feature_journal(fs->super);
3330                         goto no_journal;
3331                 }
3332                 if (!quiet) {
3333                         printf(_("Creating journal (%u blocks): "),
3334                                journal_blocks);
3335                         fflush(stdout);
3336                 }
3337                 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
3338                                                    journal_location,
3339                                                    journal_flags);
3340                 if (retval) {
3341                         com_err(program_name, retval, "%s",
3342                                 _("\n\twhile trying to create journal"));
3343                         exit(1);
3344                 }
3345                 if (!quiet)
3346                         printf("%s", _("done\n"));
3347         }
3348 no_journal:
3349         if (!super_only &&
3350             ext2fs_has_feature_mmp(fs->super)) {
3351                 retval = ext2fs_mmp_init(fs);
3352                 if (retval) {
3353                         fprintf(stderr, "%s",
3354                                 _("\nError while enabling multiple "
3355                                   "mount protection feature."));
3356                         exit(1);
3357                 }
3358                 if (!quiet)
3359                         printf(_("Multiple mount protection is enabled "
3360                                  "with update interval %d seconds.\n"),
3361                                fs->super->s_mmp_update_interval);
3362         }
3363
3364         if (ext2fs_has_feature_bigalloc(&fs_param))
3365                 fix_cluster_bg_counts(fs);
3366         if (ext2fs_has_feature_quota(&fs_param))
3367                 create_quota_inodes(fs);
3368
3369         retval = mk_hugefiles(fs, device_name);
3370         if (retval)
3371                 com_err(program_name, retval, "while creating huge files");
3372         /* Copy files from the specified directory */
3373         if (src_root_dir) {
3374                 if (!quiet)
3375                         printf("%s", _("Copying files into the device: "));
3376
3377                 retval = populate_fs(fs, EXT2_ROOT_INO, src_root_dir,
3378                                      EXT2_ROOT_INO);
3379                 if (retval) {
3380                         com_err(program_name, retval, "%s",
3381                                 _("while populating file system"));
3382                         exit(1);
3383                 } else if (!quiet)
3384                         printf("%s", _("done\n"));
3385         }
3386
3387         if (!quiet)
3388                 printf("%s", _("Writing superblocks and "
3389                        "filesystem accounting information: "));
3390         checkinterval = fs->super->s_checkinterval;
3391         max_mnt_count = fs->super->s_max_mnt_count;
3392         retval = ext2fs_close_free(&fs);
3393         if (retval) {
3394                 com_err(program_name, retval, "%s",
3395                         _("while writing out and closing file system"));
3396                 retval = 1;
3397         } else if (!quiet) {
3398                 printf("%s", _("done\n\n"));
3399                 if (!getenv("MKE2FS_SKIP_CHECK_MSG"))
3400                         print_check_message(max_mnt_count, checkinterval);
3401         }
3402
3403         remove_error_table(&et_ext2_error_table);
3404         remove_error_table(&et_prof_error_table);
3405         profile_release(profile);
3406         for (i=0; fs_types[i]; i++)
3407                 free(fs_types[i]);
3408         free(fs_types);
3409         return retval;
3410 }