misc/mke2fs.c

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