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 int     lazy_itable_init;
  81 char    *bad_blocks_filename;
  82 __u32   fs_stride;
  83
  84 struct ext2_super_block fs_param;
  85 char *creator_os;
  86 char *volume_label;
  87 char *mount_dir;
  88 char *journal_device;
  89 int sync_kludge;        /* Set using the MKE2FS_SYNC env. option */
  90
  91 profile_t       profile;
  92
  93 int sys_page_size = 4096;
  94 int linux_version_code = 0;
  95
  96 static void usage(void)
  97 {
  98         fprintf(stderr, _("Usage: %s [-c|-l filename] [-b block-size] "
  99         "[-f fragment-size]\n\t[-i bytes-per-inode] [-I inode-size] "
 100         "[-J journal-options]\n"
 101         "\t[-N number-of-inodes] [-m reserved-blocks-percentage] "
 102         "[-o creator-os]\n\t[-g blocks-per-group] [-L volume-label] "
 103         "[-M last-mounted-directory]\n\t[-O feature[,...]] "
 104         "[-r fs-revision] [-E extended-option[,...]]\n"
 105         "\t[-T fs-type] [-jnqvFSV] device [blocks-count]\n"),
 106                 program_name);
 107         exit(1);
 108 }
 109
 110 static int int_log2(int arg)
 111 {
 112         int     l = 0;
 113
 114         arg >>= 1;
 115         while (arg) {
 116                 l++;
 117                 arg >>= 1;
 118         }
 119         return l;
 120 }
 121
 122 static int int_log10(unsigned int arg)
 123 {
 124         int     l;
 125
 126         for (l=0; arg ; l++)
 127                 arg = arg / 10;
 128         return l;
 129 }
 130
 131 static int parse_version_number(const char *s)
 132 {
 133         int     major, minor, rev;
 134         char    *endptr;
 135         const char *cp = s;
 136
 137         if (!s)
 138                 return 0;
 139         major = strtol(cp, &endptr, 10);
 140         if (cp == endptr || *endptr != '.')
 141                 return 0;
 142         cp = endptr + 1;
 143         minor = strtol(cp, &endptr, 10);
 144         if (cp == endptr || *endptr != '.')
 145                 return 0;
 146         cp = endptr + 1;
 147         rev = strtol(cp, &endptr, 10);
 148         if (cp == endptr)
 149                 return 0;
 150         return ((((major * 256) + minor) * 256) + rev);
 151 }
 152
 153 /*
 154  * Helper function for read_bb_file and test_disk
 155  */
 156 static void invalid_block(ext2_filsys fs EXT2FS_ATTR((unused)), blk_t blk)
 157 {
 158         fprintf(stderr, _("Bad block %u out of range; ignored.\n"), blk);
 159         return;
 160 }
 161
 162 /*
 163  * Reads the bad blocks list from a file
 164  */
 165 static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list,
 166                          const char *bad_blocks_file)
 167 {
 168         FILE            *f;
 169         errcode_t       retval;
 170
 171         f = fopen(bad_blocks_file, "r");
 172         if (!f) {
 173                 com_err("read_bad_blocks_file", errno,
 174                         _("while trying to open %s"), bad_blocks_file);
 175                 exit(1);
 176         }
 177         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 178         fclose (f);
 179         if (retval) {
 180                 com_err("ext2fs_read_bb_FILE", retval,
 181                         _("while reading in list of bad blocks from file"));
 182                 exit(1);
 183         }
 184 }
 185
 186 /*
 187  * Runs the badblocks program to test the disk
 188  */
 189 static void test_disk(ext2_filsys fs, badblocks_list *bb_list)
 190 {
 191         FILE            *f;
 192         errcode_t       retval;
 193         char            buf[1024];
 194
 195         sprintf(buf, "badblocks -b %d -X %s%s%s %u", fs->blocksize,
 196                 quiet ? "" : "-s ", (cflag > 1) ? "-w " : "",
 197                 fs->device_name, fs->super->s_blocks_count-1);
 198         if (verbose)
 199                 printf(_("Running command: %s\n"), buf);
 200         f = popen(buf, "r");
 201         if (!f) {
 202                 com_err("popen", errno,
 203                         _("while trying to run '%s'"), buf);
 204                 exit(1);
 205         }
 206         retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
 207         pclose(f);
 208         if (retval) {
 209                 com_err("ext2fs_read_bb_FILE", retval,
 210                         _("while processing list of bad blocks from program"));
 211                 exit(1);
 212         }
 213 }
 214
 215 static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list)
 216 {
 217         dgrp_t                  i;
 218         blk_t                   j;
 219         unsigned                must_be_good;
 220         blk_t                   blk;
 221         badblocks_iterate       bb_iter;
 222         errcode_t               retval;
 223         blk_t                   group_block;
 224         int                     group;
 225         int                     group_bad;
 226
 227         if (!bb_list)
 228                 return;
 229
 230         /*
 231          * The primary superblock and group descriptors *must* be
 232          * good; if not, abort.
 233          */
 234         must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks;
 235         for (i = fs->super->s_first_data_block; i <= must_be_good; i++) {
 236                 if (ext2fs_badblocks_list_test(bb_list, i)) {
 237                         fprintf(stderr, _("Block %d in primary "
 238                                 "superblock/group descriptor area bad.\n"), i);
 239                         fprintf(stderr, _("Blocks %u through %u must be good "
 240                                 "in order to build a filesystem.\n"),
 241                                 fs->super->s_first_data_block, must_be_good);
 242                         fputs(_("Aborting....\n"), stderr);
 243                         exit(1);
 244                 }
 245         }
 246
 247         /*
 248          * See if any of the bad blocks are showing up in the backup
 249          * superblocks and/or group descriptors.  If so, issue a
 250          * warning and adjust the block counts appropriately.
 251          */
 252         group_block = fs->super->s_first_data_block +
 253                 fs->super->s_blocks_per_group;
 254
 255         for (i = 1; i < fs->group_desc_count; i++) {
 256                 group_bad = 0;
 257                 for (j=0; j < fs->desc_blocks+1; j++) {
 258                         if (ext2fs_badblocks_list_test(bb_list,
 259                                                        group_block + j)) {
 260                                 if (!group_bad)
 261                                         fprintf(stderr,
 262 _("Warning: the backup superblock/group descriptors at block %u contain\n"
 263 "       bad blocks.\n\n"),
 264                                                 group_block);
 265                                 group_bad++;
 266                                 group = ext2fs_group_of_blk(fs, group_block+j);
 267                                 fs->group_desc[group].bg_free_blocks_count++;
 268                                 ext2fs_group_desc_csum_set(fs, group);
 269                                 fs->super->s_free_blocks_count++;
 270                         }
 271                 }
 272                 group_block += fs->super->s_blocks_per_group;
 273         }
 274
 275         /*
 276          * Mark all the bad blocks as used...
 277          */
 278         retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
 279         if (retval) {
 280                 com_err("ext2fs_badblocks_list_iterate_begin", retval,
 281                         _("while marking bad blocks as used"));
 282                 exit(1);
 283         }
 284         while (ext2fs_badblocks_list_iterate(bb_iter, &blk))
 285                 ext2fs_mark_block_bitmap(fs->block_map, blk);
 286         ext2fs_badblocks_list_iterate_end(bb_iter);
 287 }
 288
 289 /*
 290  * These functions implement a generalized progress meter.
 291  */
 292 struct progress_struct {
 293         char            format[20];
 294         char            backup[80];
 295         __u32           max;
 296         int             skip_progress;
 297 };
 298
 299 static void progress_init(struct progress_struct *progress,
 300                           const char *label,__u32 max)
 301 {
 302         int     i;
 303
 304         memset(progress, 0, sizeof(struct progress_struct));
 305         if (quiet)
 306                 return;
 307
 308         /*
 309          * Figure out how many digits we need
 310          */
 311         i = int_log10(max);
 312         sprintf(progress->format, "%%%dd/%%%dld", i, i);
 313         memset(progress->backup, '\b', sizeof(progress->backup)-1);
 314         progress->backup[sizeof(progress->backup)-1] = 0;
 315         if ((2*i)+1 < (int) sizeof(progress->backup))
 316                 progress->backup[(2*i)+1] = 0;
 317         progress->max = max;
 318
 319         progress->skip_progress = 0;
 320         if (getenv("MKE2FS_SKIP_PROGRESS"))
 321                 progress->skip_progress++;
 322
 323         fputs(label, stdout);
 324         fflush(stdout);
 325 }
 326
 327 static void progress_update(struct progress_struct *progress, __u32 val)
 328 {
 329         if ((progress->format[0] == 0) || progress->skip_progress)
 330                 return;
 331         printf(progress->format, val, progress->max);
 332         fputs(progress->backup, stdout);
 333 }
 334
 335 static void progress_close(struct progress_struct *progress)
 336 {
 337         if (progress->format[0] == 0)
 338                 return;
 339         fputs(_("done                            \n"), stdout);
 340 }
 341
 342
 343 /*
 344  * Helper function which zeros out _num_ blocks starting at _blk_.  In
 345  * case of an error, the details of the error is returned via _ret_blk_
 346  * and _ret_count_ if they are non-NULL pointers.  Returns 0 on
 347  * success, and an error code on an error.
 348  *
 349  * As a special case, if the first argument is NULL, then it will
 350  * attempt to free the static zeroizing buffer.  (This is to keep
 351  * programs that check for memory leaks happy.)
 352  */
 353 static errcode_t zero_blocks(ext2_filsys fs, blk_t blk, int num,
 354                              struct progress_struct *progress,
 355                              blk_t *ret_blk, int *ret_count)
 356 {
 357         int             j, count, next_update, next_update_incr;
 358         static char     *buf;
 359         errcode_t       retval;
 360
 361         /* If fs is null, clean up the static buffer and return */
 362         if (!fs) {
 363                 if (buf) {
 364                         free(buf);
 365                         buf = 0;
 366                 }
 367                 return 0;
 368         }
 369         /* Allocate the zeroizing buffer if necessary */
 370         if (!buf) {
 371                 buf = malloc(fs->blocksize * STRIDE_LENGTH);
 372                 if (!buf) {
 373                         com_err("malloc", ENOMEM,
 374                                 _("while allocating zeroizing buffer"));
 375                         exit(1);
 376                 }
 377                 memset(buf, 0, fs->blocksize * STRIDE_LENGTH);
 378         }
 379         /* OK, do the write loop */
 380         next_update = 0;
 381         next_update_incr = num / 100;
 382         if (next_update_incr < 1)
 383                 next_update_incr = 1;
 384         for (j=0; j < num; j += STRIDE_LENGTH, blk += STRIDE_LENGTH) {
 385                 count = num - j;
 386                 if (count > STRIDE_LENGTH)
 387                         count = STRIDE_LENGTH;
 388                 retval = io_channel_write_blk(fs->io, blk, count, buf);
 389                 if (retval) {
 390                         if (ret_count)
 391                                 *ret_count = count;
 392                         if (ret_blk)
 393                                 *ret_blk = blk;
 394                         return retval;
 395                 }
 396                 if (progress && j > next_update) {
 397                         next_update += num / 100;
 398                         progress_update(progress, blk);
 399                 }
 400         }
 401         return 0;
 402 }
 403
 404 static void write_inode_tables(ext2_filsys fs, int lazy_flag)
 405 {
 406         errcode_t       retval;
 407         blk_t           blk;
 408         dgrp_t          i;
 409         int             num, ipb;
 410         struct progress_struct progress;
 411
 412         if (quiet)
 413                 memset(&progress, 0, sizeof(progress));
 414         else
 415                 progress_init(&progress, _("Writing inode tables: "),
 416                               fs->group_desc_count);
 417
 418         for (i = 0; i < fs->group_desc_count; i++) {
 419                 progress_update(&progress, i);
 420
 421                 blk = fs->group_desc[i].bg_inode_table;
 422                 num = fs->inode_blocks_per_group;
 423
 424                 if (lazy_flag) {
 425                         ipb = fs->blocksize / EXT2_INODE_SIZE(fs->super);
 426                         printf("bg %i, num %d, ipb %d, unused %d ",
 427                                i, num, ipb, fs->group_desc[i].bg_itable_unused);
 428                         num = ((((fs->super->s_inodes_per_group -
 429                                   fs->group_desc[i].bg_itable_unused) *
 430                                  EXT2_INODE_SIZE(fs->super)) +
 431                                 EXT2_BLOCK_SIZE(fs->super) - 1) /
 432                                EXT2_BLOCK_SIZE(fs->super));
 433                         printf("new num %d\n", num);
 434                 } else {
 435                         /* The kernel doesn't need to zero the itable blocks */
 436                         fs->group_desc[i].bg_flags |= EXT2_BG_INODE_ZEROED;
 437                         ext2fs_group_desc_csum_set(fs, i);
 438                 }
 439                 retval = zero_blocks(fs, blk, num, 0, &blk, &num);
 440                 if (retval) {
 441                         fprintf(stderr, _("\nCould not write %d "
 442                                   "blocks in inode table starting at %u: %s\n"),
 443                                 num, blk, error_message(retval));
 444                         exit(1);
 445                 }
 446                 if (sync_kludge) {
 447                         if (sync_kludge == 1)
 448                                 sync();
 449                         else if ((i % sync_kludge) == 0)
 450                                 sync();
 451                 }
 452         }
 453         zero_blocks(0, 0, 0, 0, 0, 0);
 454         progress_close(&progress);
 455 }
 456
 457 static void create_root_dir(ext2_filsys fs)
 458 {
 459         errcode_t               retval;
 460         struct ext2_inode       inode;
 461         __u32                   uid, gid;
 462
 463         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0);
 464         if (retval) {
 465                 com_err("ext2fs_mkdir", retval, _("while creating root dir"));
 466                 exit(1);
 467         }
 468         if (geteuid()) {
 469                 retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode);
 470                 if (retval) {
 471                         com_err("ext2fs_read_inode", retval,
 472                                 _("while reading root inode"));
 473                         exit(1);
 474                 }
 475                 uid = getuid();
 476                 inode.i_uid = uid;
 477                 ext2fs_set_i_uid_high(inode, uid >> 16);
 478                 if (uid) {
 479                         gid = getgid();
 480                         inode.i_gid = gid;
 481                         ext2fs_set_i_gid_high(inode, gid >> 16);
 482                 }
 483                 retval = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode);
 484                 if (retval) {
 485                         com_err("ext2fs_write_inode", retval,
 486                                 _("while setting root inode ownership"));
 487                         exit(1);
 488                 }
 489         }
 490 }
 491
 492 static void create_lost_and_found(ext2_filsys fs)
 493 {
 494         unsigned int            lpf_size = 0;
 495         errcode_t               retval;
 496         ext2_ino_t              ino;
 497         const char              *name = "lost+found";
 498         int                     i;
 499
 500         fs->umask = 077;
 501         retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name);
 502         if (retval) {
 503                 com_err("ext2fs_mkdir", retval,
 504                         _("while creating /lost+found"));
 505                 exit(1);
 506         }
 507
 508         retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
 509         if (retval) {
 510                 com_err("ext2_lookup", retval,
 511                         _("while looking up /lost+found"));
 512                 exit(1);
 513         }
 514
 515         for (i=1; i < EXT2_NDIR_BLOCKS; i++) {
 516                 /* Ensure that lost+found is at least 2 blocks, so we always
 517                  * test large empty blocks for big-block filesystems.  */
 518                 if ((lpf_size += fs->blocksize) >= 16*1024 &&
 519                     lpf_size >= 2 * fs->blocksize)
 520                         break;
 521                 retval = ext2fs_expand_dir(fs, ino);
 522                 if (retval) {
 523                         com_err("ext2fs_expand_dir", retval,
 524                                 _("while expanding /lost+found"));
 525                         exit(1);
 526                 }
 527         }
 528 }
 529
 530 static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list)
 531 {
 532         errcode_t       retval;
 533
 534         ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO);
 535         ext2fs_inode_alloc_stats2(fs, EXT2_BAD_INO, +1, 0);
 536         retval = ext2fs_update_bb_inode(fs, bb_list);
 537         if (retval) {
 538                 com_err("ext2fs_update_bb_inode", retval,
 539                         _("while setting bad block inode"));
 540                 exit(1);
 541         }
 542
 543 }
 544
 545 static void reserve_inodes(ext2_filsys fs)
 546 {
 547         ext2_ino_t      i;
 548         int             group;
 549
 550         for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++)
 551                 ext2fs_inode_alloc_stats2(fs, i, +1, 0);
 552         ext2fs_mark_ib_dirty(fs);
 553 }
 554
 555 #define BSD_DISKMAGIC   (0x82564557UL)  /* The disk magic number */
 556 #define BSD_MAGICDISK   (0x57455682UL)  /* The disk magic number reversed */
 557 #define BSD_LABEL_OFFSET        64
 558
 559 static void zap_sector(ext2_filsys fs, int sect, int nsect)
 560 {
 561         char *buf;
 562         int retval;
 563         unsigned int *magic;
 564
 565         buf = malloc(512*nsect);
 566         if (!buf) {
 567                 printf(_("Out of memory erasing sectors %d-%d\n"),
 568                        sect, sect + nsect - 1);
 569                 exit(1);
 570         }
 571
 572         if (sect == 0) {
 573                 /* Check for a BSD disklabel, and don't erase it if so */
 574                 retval = io_channel_read_blk(fs->io, 0, -512, buf);
 575                 if (retval)
 576                         fprintf(stderr,
 577                                 _("Warning: could not read block 0: %s\n"),
 578                                 error_message(retval));
 579                 else {
 580                         magic = (unsigned int *) (buf + BSD_LABEL_OFFSET);
 581                         if ((*magic == BSD_DISKMAGIC) ||
 582                             (*magic == BSD_MAGICDISK))
 583                                 return;
 584                 }
 585         }
 586
 587         memset(buf, 0, 512*nsect);
 588         io_channel_set_blksize(fs->io, 512);
 589         retval = io_channel_write_blk(fs->io, sect, -512*nsect, buf);
 590         io_channel_set_blksize(fs->io, fs->blocksize);
 591         free(buf);
 592         if (retval)
 593                 fprintf(stderr, _("Warning: could not erase sector %d: %s\n"),
 594                         sect, error_message(retval));
 595 }
 596
 597 static void create_journal_dev(ext2_filsys fs)
 598 {
 599         struct progress_struct progress;
 600         errcode_t               retval;
 601         char                    *buf;
 602         blk_t                   blk;
 603         int                     count;
 604
 605         retval = ext2fs_create_journal_superblock(fs,
 606                                   fs->super->s_blocks_count, 0, &buf);
 607         if (retval) {
 608                 com_err("create_journal_dev", retval,
 609                         _("while initializing journal superblock"));
 610                 exit(1);
 611         }
 612         if (quiet)
 613                 memset(&progress, 0, sizeof(progress));
 614         else
 615                 progress_init(&progress, _("Zeroing journal device: "),
 616                               fs->super->s_blocks_count);
 617
 618         retval = zero_blocks(fs, 0, fs->super->s_blocks_count,
 619                              &progress, &blk, &count);
 620         if (retval) {
 621                 com_err("create_journal_dev", retval,
 622                         _("while zeroing journal device (block %u, count %d)"),
 623                         blk, count);
 624                 exit(1);
 625         }
 626         zero_blocks(0, 0, 0, 0, 0, 0);
 627
 628         retval = io_channel_write_blk(fs->io,
 629                                       fs->super->s_first_data_block+1,
 630                                       1, buf);
 631         if (retval) {
 632                 com_err("create_journal_dev", retval,
 633                         _("while writing journal superblock"));
 634                 exit(1);
 635         }
 636         progress_close(&progress);
 637 }
 638
 639 static void show_stats(ext2_filsys fs)
 640 {
 641         struct ext2_super_block *s = fs->super;
 642         char                    buf[80];
 643         char                    *os;
 644         blk_t                   group_block;
 645         dgrp_t                  i;
 646         int                     need, col_left;
 647
 648         if (fs_param.s_blocks_count != s->s_blocks_count)
 649                 fprintf(stderr, _("warning: %u blocks unused.\n\n"),
 650                        fs_param.s_blocks_count - s->s_blocks_count);
 651
 652         memset(buf, 0, sizeof(buf));
 653         strncpy(buf, s->s_volume_name, sizeof(s->s_volume_name));
 654         printf(_("Filesystem label=%s\n"), buf);
 655         fputs(_("OS type: "), stdout);
 656         os = e2p_os2string(fs->super->s_creator_os);
 657         fputs(os, stdout);
 658         free(os);
 659         printf("\n");
 660         printf(_("Block size=%u (log=%u)\n"), fs->blocksize,
 661                 s->s_log_block_size);
 662         printf(_("Fragment size=%u (log=%u)\n"), fs->fragsize,
 663                 s->s_log_frag_size);
 664         printf(_("%u inodes, %u blocks\n"), s->s_inodes_count,
 665                s->s_blocks_count);
 666         printf(_("%u blocks (%2.2f%%) reserved for the super user\n"),
 667                 s->s_r_blocks_count,
 668                100.0 * s->s_r_blocks_count / s->s_blocks_count);
 669         printf(_("First data block=%u\n"), s->s_first_data_block);
 670         if (s->s_reserved_gdt_blocks)
 671                 printf(_("Maximum filesystem blocks=%lu\n"),
 672                        (s->s_reserved_gdt_blocks + fs->desc_blocks) *
 673                        EXT2_DESC_PER_BLOCK(s) * s->s_blocks_per_group);
 674         if (fs->group_desc_count > 1)
 675                 printf(_("%u block groups\n"), fs->group_desc_count);
 676         else
 677                 printf(_("%u block group\n"), fs->group_desc_count);
 678         printf(_("%u blocks per group, %u fragments per group\n"),
 679                s->s_blocks_per_group, s->s_frags_per_group);
 680         printf(_("%u inodes per group\n"), s->s_inodes_per_group);
 681
 682         if (fs->group_desc_count == 1) {
 683                 printf("\n");
 684                 return;
 685         }
 686
 687         printf(_("Superblock backups stored on blocks: "));
 688         group_block = s->s_first_data_block;
 689         col_left = 0;
 690         for (i = 1; i < fs->group_desc_count; i++) {
 691                 group_block += s->s_blocks_per_group;
 692                 if (!ext2fs_bg_has_super(fs, i))
 693                         continue;
 694                 if (i != 1)
 695                         printf(", ");
 696                 need = int_log10(group_block) + 2;
 697                 if (need > col_left) {
 698                         printf("\n\t");
 699                         col_left = 72;
 700                 }
 701                 col_left -= need;
 702                 printf("%u", group_block);
 703         }
 704         printf("\n\n");
 705 }
 706
 707 /*
 708  * Set the S_CREATOR_OS field.  Return true if OS is known,
 709  * otherwise, 0.
 710  */
 711 static int set_os(struct ext2_super_block *sb, char *os)
 712 {
 713         if (isdigit (*os))
 714                 sb->s_creator_os = atoi (os);
 715         else if (strcasecmp(os, "linux") == 0)
 716                 sb->s_creator_os = EXT2_OS_LINUX;
 717         else if (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0)
 718                 sb->s_creator_os = EXT2_OS_HURD;
 719         else if (strcasecmp(os, "freebsd") == 0)
 720                 sb->s_creator_os = EXT2_OS_FREEBSD;
 721         else if (strcasecmp(os, "lites") == 0)
 722                 sb->s_creator_os = EXT2_OS_LITES;
 723         else
 724                 return 0;
 725         return 1;
 726 }
 727
 728 #define PATH_SET "PATH=/sbin"
 729
 730 static void parse_extended_opts(struct ext2_super_block *param,
 731                                 const char *opts)
 732 {
 733         char    *buf, *token, *next, *p, *arg, *badopt = 0;
 734         int     len;
 735         int     r_usage = 0;
 736
 737         len = strlen(opts);
 738         buf = malloc(len+1);
 739         if (!buf) {
 740                 fprintf(stderr,
 741                         _("Couldn't allocate memory to parse options!\n"));
 742                 exit(1);
 743         }
 744         strcpy(buf, opts);
 745         for (token = buf; token && *token; token = next) {
 746                 p = strchr(token, ',');
 747                 next = 0;
 748                 if (p) {
 749                         *p = 0;
 750                         next = p+1;
 751                 }
 752                 arg = strchr(token, '=');
 753                 if (arg) {
 754                         *arg = 0;
 755                         arg++;
 756                 }
 757                 if (strcmp(token, "stride") == 0) {
 758                         if (!arg) {
 759                                 r_usage++;
 760                                 badopt = token;
 761                                 continue;
 762                         }
 763                         param->s_raid_stride = strtoul(arg, &p, 0);
 764                         if (*p || (param->s_raid_stride == 0)) {
 765                                 fprintf(stderr,
 766                                         _("Invalid stride parameter: %s\n"),
 767                                         arg);
 768                                 r_usage++;
 769                                 continue;
 770                         }
 771                 } else if (strcmp(token, "stripe-width") == 0 ||
 772                            strcmp(token, "stripe_width") == 0) {
 773                         if (!arg) {
 774                                 r_usage++;
 775                                 badopt = token;
 776                                 continue;
 777                         }
 778                         param->s_raid_stripe_width = strtoul(arg, &p, 0);
 779                         if (*p || (param->s_raid_stripe_width == 0)) {
 780                                 fprintf(stderr,
 781                                         _("Invalid stripe-width parameter: %s\n"),
 782                                         arg);
 783                                 r_usage++;
 784                                 continue;
 785                         }
 786                 } else if (!strcmp(token, "resize")) {
 787                         unsigned long resize, bpg, rsv_groups;
 788                         unsigned long group_desc_count, desc_blocks;
 789                         unsigned int gdpb, blocksize;
 790                         int rsv_gdb;
 791
 792                         if (!arg) {
 793                                 r_usage++;
 794                                 badopt = token;
 795                                 continue;
 796                         }
 797
 798                         resize = parse_num_blocks(arg,
 799                                                   param->s_log_block_size);
 800
 801                         if (resize == 0) {
 802                                 fprintf(stderr,
 803                                         _("Invalid resize parameter: %s\n"),
 804                                         arg);
 805                                 r_usage++;
 806                                 continue;
 807                         }
 808                         if (resize <= param->s_blocks_count) {
 809                                 fprintf(stderr,
 810                                         _("The resize maximum must be greater "
 811                                           "than the filesystem size.\n"));
 812                                 r_usage++;
 813                                 continue;
 814                         }
 815
 816                         blocksize = EXT2_BLOCK_SIZE(param);
 817                         bpg = param->s_blocks_per_group;
 818                         if (!bpg)
 819                                 bpg = blocksize * 8;
 820                         gdpb = EXT2_DESC_PER_BLOCK(param);
 821                         group_desc_count =
 822                                 ext2fs_div_ceil(param->s_blocks_count, bpg);
 823                         desc_blocks = (group_desc_count +
 824                                        gdpb - 1) / gdpb;
 825                         rsv_groups = ext2fs_div_ceil(resize, bpg);
 826                         rsv_gdb = ext2fs_div_ceil(rsv_groups, gdpb) -
 827                                 desc_blocks;
 828                         if (rsv_gdb > (int) EXT2_ADDR_PER_BLOCK(param))
 829                                 rsv_gdb = EXT2_ADDR_PER_BLOCK(param);
 830
 831                         if (rsv_gdb > 0) {
 832                                 if (param->s_rev_level == EXT2_GOOD_OLD_REV) {
 833                                         fprintf(stderr,
 834         _("On-line resizing not supported with revision 0 filesystems\n"));
 835                                         free(buf);
 836                                         exit(1);
 837                                 }
 838                                 param->s_feature_compat |=
 839                                         EXT2_FEATURE_COMPAT_RESIZE_INODE;
 840
 841                                 param->s_reserved_gdt_blocks = rsv_gdb;
 842                         }
 843                 } else if (!strcmp(token, "test_fs")) {
 844                         param->s_flags |= EXT2_FLAGS_TEST_FILESYS;
 845                 } else if (!strcmp(token, "lazy_itable_init")) {
 846                         if (!arg) {
 847                                 r_usage++;
 848                                 badopt = token;
 849                                 continue;
 850                         }
 851                         lazy_itable_init = strtoul(arg, &p, 0);
 852                 } else {
 853                         r_usage++;
 854                         badopt = token;
 855                 }
 856         }
 857         if (r_usage) {
 858                 fprintf(stderr, _("\nBad option(s) specified: %s\n\n"
 859                         "Extended options are separated by commas, "
 860                         "and may take an argument which\n"
 861                         "\tis set off by an equals ('=') sign.\n\n"
 862                         "Valid extended options are:\n"
 863                         "\tstride=<RAID per-disk data chunk in blocks>\n"
 864                         "\tstripe-width=<RAID stride * data disks in blocks>\n"
 865                         "\tresize=<resize maximum size in blocks>\n"
 866                         "\tlazy_itable_init=<0 to disable, 1 to enable>\n"
 867                         "\ttest_fs\n\n"),
 868                         badopt ? badopt : "");
 869                 free(buf);
 870                 exit(1);
 871         }
 872         if (param->s_raid_stride &&
 873             (param->s_raid_stripe_width % param->s_raid_stride) != 0)
 874                 fprintf(stderr, _("\nWarning: RAID stripe-width %u not an even "
 875                                   "multiple of stride %u.\n\n"),
 876                         param->s_raid_stripe_width, param->s_raid_stride);
 877
 878         free(buf);
 879 }
 880
 881 static __u32 ok_features[3] = {
 882         /* Compat */
 883         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 884                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 885                 EXT2_FEATURE_COMPAT_DIR_INDEX |
 886                 EXT2_FEATURE_COMPAT_EXT_ATTR,
 887         /* Incompat */
 888         EXT2_FEATURE_INCOMPAT_FILETYPE|
 889                 EXT3_FEATURE_INCOMPAT_EXTENTS|
 890                 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|
 891                 EXT2_FEATURE_INCOMPAT_META_BG|
 892                 EXT4_FEATURE_INCOMPAT_FLEX_BG,
 893         /* R/O compat */
 894         EXT2_FEATURE_RO_COMPAT_LARGE_FILE|
 895                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|
 896                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM
 897 };
 898
 899
 900 static void syntax_err_report(const char *filename, long err, int line_num)
 901 {
 902         fprintf(stderr,
 903                 _("Syntax error in mke2fs config file (%s, line #%d)\n\t%s\n"),
 904                 filename, line_num, error_message(err));
 905         exit(1);
 906 }
 907
 908 static const char *config_fn[] = { ROOT_SYSCONFDIR "/mke2fs.conf", 0 };
 909
 910 static void edit_feature(const char *str, __u32 *compat_array)
 911 {
 912         if (!str)
 913                 return;
 914
 915         if (e2p_edit_feature(str, compat_array, ok_features)) {
 916                 fprintf(stderr, _("Invalid filesystem option set: %s\n"),
 917                         str);
 918                 exit(1);
 919         }
 920 }
 921
 922 struct str_list {
 923         char **list;
 924         int num;
 925         int max;
 926 };
 927
 928 static errcode_t init_list(struct str_list *sl)
 929 {
 930         sl->num = 0;
 931         sl->max = 0;
 932         sl->list = malloc((sl->max+1) * sizeof(char *));
 933         if (!sl->list)
 934                 return ENOMEM;
 935         sl->list[0] = 0;
 936         return 0;
 937 }
 938
 939 static errcode_t push_string(struct str_list *sl, const char *str)
 940 {
 941         char **new_list;
 942
 943         if (sl->num >= sl->max) {
 944                 sl->max += 2;
 945                 new_list = realloc(sl->list, (sl->max+1) * sizeof(char *));
 946                 if (!new_list)
 947                         return ENOMEM;
 948                 sl->list = new_list;
 949         }
 950         sl->list[sl->num] = malloc(strlen(str)+1);
 951         if (sl->list[sl->num] == 0)
 952                 return ENOMEM;
 953         strcpy(sl->list[sl->num], str);
 954         sl->num++;
 955         sl->list[sl->num] = 0;
 956         return 0;
 957 }
 958
 959 static void print_str_list(char **list)
 960 {
 961         char **cpp;
 962
 963         for (cpp = list; *cpp; cpp++) {
 964                 printf("'%s'", *cpp);
 965                 if (cpp[1])
 966                         fputs(", ", stdout);
 967         }
 968         fputc('\n', stdout);
 969 }
 970
 971 static char **parse_fs_type(const char *fs_type,
 972                             const char *usage_types,
 973                             struct ext2_super_block *fs_param,
 974                             char *progname)
 975 {
 976         const char      *ext_type = 0;
 977         char            *parse_str;
 978         char            *profile_type = 0;
 979         char            *cp, *t;
 980         const char      *size_type;
 981         struct str_list list;
 982         int             state = 0;
 983         unsigned long   meg;
 984
 985         if (init_list(&list))
 986                 return 0;
 987
 988         if (fs_type)
 989                 ext_type = fs_type;
 990         else if (progname) {
 991                 ext_type = strrchr(progname, '/');
 992                 if (ext_type)
 993                         ext_type++;
 994                 else
 995                         ext_type = progname;
 996
 997                 if (!strncmp(ext_type, "mkfs.", 5)) {
 998                         ext_type += 5;
 999                         if (ext_type[0] == 0)
1000                                 ext_type = 0;
1001                 } else
1002                         ext_type = 0;
1003         }
1004
1005         if (!ext_type) {
1006                 profile_get_string(profile, "defaults", "fs_type", 0,
1007                                    "ext2", &profile_type);
1008                 ext_type = profile_type;
1009                 if (!strcmp(ext_type, "ext2") && (journal_size != 0))
1010                         ext_type = "ext3";
1011         }
1012
1013         meg = (1024 * 1024) / EXT2_BLOCK_SIZE(fs_param);
1014         if (fs_param->s_blocks_count < 3 * meg)
1015                 size_type = "floppy";
1016         else if (fs_param->s_blocks_count < 512 * meg)
1017                 size_type = "small";
1018         else
1019                 size_type = "default";
1020
1021         if (!usage_types)
1022                 usage_types = size_type;
1023
1024         parse_str = malloc(usage_types ? strlen(usage_types)+1 : 1);
1025         if (!parse_str) {
1026                 free(list.list);
1027                 return 0;
1028         }
1029         if (usage_types)
1030                 strcpy(parse_str, usage_types);
1031         else
1032                 *parse_str = '\0';
1033
1034         if (ext_type)
1035                 push_string(&list, ext_type);
1036         cp = parse_str;
1037         while (1) {
1038                 t = strchr(cp, ',');
1039                 if (t)
1040                         *t = '\0';
1041
1042                 if (*cp)
1043                         push_string(&list, cp);
1044                 if (t)
1045                         cp = t+1;
1046                 else {
1047                         cp = "";
1048                         break;
1049                 }
1050         }
1051         free(parse_str);
1052         if (profile_type)
1053                 free(profile_type);
1054         return (list.list);
1055 }
1056
1057 static char *get_string_from_profile(char **fs_types, const char *opt,
1058                                      const char *def_val)
1059 {
1060         char *ret = 0;
1061         char **cpp;
1062         int i;
1063
1064         for (i=0; fs_types[i]; i++);
1065         for (i-=1; i >=0 ; i--) {
1066                 profile_get_string(profile, "fs_types", fs_types[i],
1067                                    opt, 0, &ret);
1068                 if (ret)
1069                         return ret;
1070         }
1071         profile_get_string(profile, "defaults", opt, 0, def_val, &ret);
1072         return (ret);
1073 }
1074
1075 static int get_int_from_profile(char **fs_types, const char *opt, int def_val)
1076 {
1077         int ret;
1078         char **cpp;
1079
1080         profile_get_integer(profile, "defaults", opt, 0, def_val, &ret);
1081         for (cpp = fs_types; *cpp; cpp++)
1082                 profile_get_integer(profile, "fs_types", *cpp, opt, ret, &ret);
1083         return ret;
1084 }
1085
1086 static int get_bool_from_profile(char **fs_types, const char *opt, int def_val)
1087 {
1088         int ret;
1089         char **cpp;
1090
1091         profile_get_boolean(profile, "defaults", opt, 0, def_val, &ret);
1092         for (cpp = fs_types; *cpp; cpp++)
1093                 profile_get_boolean(profile, "fs_types", *cpp, opt, ret, &ret);
1094         return ret;
1095 }
1096
1097 extern const char *mke2fs_default_profile;
1098 static const char *default_files[] = { "<default>", 0 };
1099
1100 static void PRS(int argc, char *argv[])
1101 {
1102         int             b, c;
1103         int             size;
1104         char            *tmp, *tmp2;
1105         int             blocksize = 0;
1106         int             inode_ratio = 0;
1107         int             inode_size = 0;
1108         double          reserved_ratio = 5.0;
1109         int             sector_size = 0;
1110         int             show_version_only = 0;
1111         unsigned long long num_inodes = 0; /* unsigned long long to catch too-large input */
1112         errcode_t       retval;
1113         char *          oldpath = getenv("PATH");
1114         char *          extended_opts = 0;
1115         const char *    fs_type = 0;
1116         const char *    usage_types = 0;
1117         char            **fs_types;
1118         blk_t           dev_size;
1119 #ifdef __linux__
1120         struct          utsname ut;
1121 #endif
1122         long            sysval;
1123         int             s_opt = -1, r_opt = -1;
1124         char            *fs_features = 0;
1125         int             use_bsize;
1126         char            *newpath;
1127         int             pathlen = sizeof(PATH_SET) + 1;
1128
1129         if (oldpath)
1130                 pathlen += strlen(oldpath);
1131         newpath = malloc(pathlen);
1132         strcpy(newpath, PATH_SET);
1133
1134         /* Update our PATH to include /sbin  */
1135         if (oldpath) {
1136                 strcat (newpath, ":");
1137                 strcat (newpath, oldpath);
1138         }
1139         putenv (newpath);
1140
1141         tmp = getenv("MKE2FS_SYNC");
1142         if (tmp)
1143                 sync_kludge = atoi(tmp);
1144
1145         /* Determine the system page size if possible */
1146 #ifdef HAVE_SYSCONF
1147 #if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE))
1148 #define _SC_PAGESIZE _SC_PAGE_SIZE
1149 #endif
1150 #ifdef _SC_PAGESIZE
1151         sysval = sysconf(_SC_PAGESIZE);
1152         if (sysval > 0)
1153                 sys_page_size = sysval;
1154 #endif /* _SC_PAGESIZE */
1155 #endif /* HAVE_SYSCONF */
1156
1157         if ((tmp = getenv("MKE2FS_CONFIG")) != NULL)
1158                 config_fn[0] = tmp;
1159         profile_set_syntax_err_cb(syntax_err_report);
1160         retval = profile_init(config_fn, &profile);
1161         if (retval == ENOENT) {
1162                 profile_init(default_files, &profile);
1163                 profile_set_default(profile, mke2fs_default_profile);
1164         }
1165
1166         setbuf(stdout, NULL);
1167         setbuf(stderr, NULL);
1168         add_error_table(&et_ext2_error_table);
1169         add_error_table(&et_prof_error_table);
1170         memset(&fs_param, 0, sizeof(struct ext2_super_block));
1171         fs_param.s_rev_level = 1;  /* Create revision 1 filesystems now */
1172
1173 #ifdef __linux__
1174         if (uname(&ut)) {
1175                 perror("uname");
1176                 exit(1);
1177         }
1178         linux_version_code = parse_version_number(ut.release);
1179         if (linux_version_code && linux_version_code < (2*65536 + 2*256))
1180                 fs_param.s_rev_level = 0;
1181 #endif
1182
1183         if (argc && *argv) {
1184                 program_name = get_progname(*argv);
1185
1186                 /* If called as mkfs.ext3, create a journal inode */
1187                 if (!strcmp(program_name, "mkfs.ext3"))
1188                         journal_size = -1;
1189         }
1190
1191         while ((c = getopt (argc, argv,
1192                     "b:cf:g:i:jl:m:no:qr:s:t:vE:FI:J:L:M:N:O:R:ST:V")) != EOF) {
1193                 switch (c) {
1194                 case 'b':
1195                         blocksize = strtol(optarg, &tmp, 0);
1196                         b = (blocksize > 0) ? blocksize : -blocksize;
1197                         if (b < EXT2_MIN_BLOCK_SIZE ||
1198                             b > EXT2_MAX_BLOCK_SIZE || *tmp) {
1199                                 com_err(program_name, 0,
1200                                         _("invalid block size - %s"), optarg);
1201                                 exit(1);
1202                         }
1203                         if (blocksize > 4096)
1204                                 fprintf(stderr, _("Warning: blocksize %d not "
1205                                                   "usable on most systems.\n"),
1206                                         blocksize);
1207                         if (blocksize > 0)
1208                                 fs_param.s_log_block_size =
1209                                         int_log2(blocksize >>
1210                                                  EXT2_MIN_BLOCK_LOG_SIZE);
1211                         break;
1212                 case 'c':       /* Check for bad blocks */
1213                         cflag++;
1214                         break;
1215                 case 'f':
1216                         size = strtoul(optarg, &tmp, 0);
1217                         if (size < EXT2_MIN_BLOCK_SIZE ||
1218                             size > EXT2_MAX_BLOCK_SIZE || *tmp) {
1219                                 com_err(program_name, 0,
1220                                         _("invalid fragment size - %s"),
1221                                         optarg);
1222                                 exit(1);
1223                         }
1224                         fs_param.s_log_frag_size =
1225                                 int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE);
1226                         fprintf(stderr, _("Warning: fragments not supported.  "
1227                                "Ignoring -f option\n"));
1228                         break;
1229                 case 'g':
1230                         fs_param.s_blocks_per_group = strtoul(optarg, &tmp, 0);
1231                         if (*tmp) {
1232                                 com_err(program_name, 0,
1233                                         _("Illegal number for blocks per group"));
1234                                 exit(1);
1235                         }
1236                         if ((fs_param.s_blocks_per_group % 8) != 0) {
1237                                 com_err(program_name, 0,
1238                                 _("blocks per group must be multiple of 8"));
1239                                 exit(1);
1240                         }
1241                         break;
1242                 case 'i':
1243                         inode_ratio = strtoul(optarg, &tmp, 0);
1244                         if (inode_ratio < EXT2_MIN_BLOCK_SIZE ||
1245                             inode_ratio > EXT2_MAX_BLOCK_SIZE * 1024 ||
1246                             *tmp) {
1247                                 com_err(program_name, 0,
1248                                         _("invalid inode ratio %s (min %d/max %d)"),
1249                                         optarg, EXT2_MIN_BLOCK_SIZE,
1250                                         EXT2_MAX_BLOCK_SIZE);
1251                                 exit(1);
1252                         }
1253                         break;
1254                 case 'J':
1255                         parse_journal_opts(optarg);
1256                         break;
1257                 case 'j':
1258                         if (!journal_size)
1259                                 journal_size = -1;
1260                         break;
1261                 case 'l':
1262                         bad_blocks_filename = malloc(strlen(optarg)+1);
1263                         if (!bad_blocks_filename) {
1264                                 com_err(program_name, ENOMEM,
1265                                         _("in malloc for bad_blocks_filename"));
1266                                 exit(1);
1267                         }
1268                         strcpy(bad_blocks_filename, optarg);
1269                         break;
1270                 case 'm':
1271                         reserved_ratio = strtod(optarg, &tmp);
1272                         if (reserved_ratio > 50 || *tmp) {
1273                                 com_err(program_name, 0,
1274                                         _("invalid reserved blocks percent - %s"),
1275                                         optarg);
1276                                 exit(1);
1277                         }
1278                         break;
1279                 case 'n':
1280                         noaction++;
1281                         break;
1282                 case 'o':
1283                         creator_os = optarg;
1284                         break;
1285                 case 'q':
1286                         quiet = 1;
1287                         break;
1288                 case 'r':
1289                         r_opt = strtoul(optarg, &tmp, 0);
1290                         if (*tmp) {
1291                                 com_err(program_name, 0,
1292                                         _("bad revision level - %s"), optarg);
1293                                 exit(1);
1294                         }
1295                         fs_param.s_rev_level = r_opt;
1296                         break;
1297                 case 's':       /* deprecated */
1298                         s_opt = atoi(optarg);
1299                         break;
1300                 case 'I':
1301                         inode_size = strtoul(optarg, &tmp, 0);
1302                         if (*tmp) {
1303                                 com_err(program_name, 0,
1304                                         _("invalid inode size - %s"), optarg);
1305                                 exit(1);
1306                         }
1307                         break;
1308                 case 'v':
1309                         verbose = 1;
1310                         break;
1311                 case 'F':
1312                         force++;
1313                         break;
1314                 case 'L':
1315                         volume_label = optarg;
1316                         break;
1317                 case 'M':
1318                         mount_dir = optarg;
1319                         break;
1320                 case 'N':
1321                         num_inodes = strtoul(optarg, &tmp, 0);
1322                         if (*tmp) {
1323                                 com_err(program_name, 0,
1324                                         _("bad num inodes - %s"), optarg);
1325                                         exit(1);
1326                         }
1327                         break;
1328                 case 'O':
1329                         fs_features = optarg;
1330                         break;
1331                 case 'E':
1332                 case 'R':
1333                         extended_opts = optarg;
1334                         break;
1335                 case 'S':
1336                         super_only = 1;
1337                         break;
1338                 case 't':
1339                         fs_type = optarg;
1340                         break;
1341                 case 'T':
1342                         usage_types = optarg;
1343                         break;
1344                 case 'V':
1345                         /* Print version number and exit */
1346                         show_version_only++;
1347                         break;
1348                 default:
1349                         usage();
1350                 }
1351         }
1352         if ((optind == argc) && !show_version_only)
1353                 usage();
1354         device_name = argv[optind++];
1355
1356         if (!quiet || show_version_only)
1357                 fprintf (stderr, "mke2fs %s (%s)\n", E2FSPROGS_VERSION,
1358                          E2FSPROGS_DATE);
1359
1360         if (show_version_only) {
1361                 fprintf(stderr, _("\tUsing %s\n"),
1362                         error_message(EXT2_ET_BASE));
1363                 exit(0);
1364         }
1365
1366         /*
1367          * If there's no blocksize specified and there is a journal
1368          * device, use it to figure out the blocksize
1369          */
1370         if (blocksize <= 0 && journal_device) {
1371                 ext2_filsys     jfs;
1372                 io_manager      io_ptr;
1373
1374 #ifdef CONFIG_TESTIO_DEBUG
1375                 io_ptr = test_io_manager;
1376                 test_io_backing_manager = unix_io_manager;
1377 #else
1378                 io_ptr = unix_io_manager;
1379 #endif
1380                 retval = ext2fs_open(journal_device,
1381                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1382                                      0, io_ptr, &jfs);
1383                 if (retval) {
1384                         com_err(program_name, retval,
1385                                 _("while trying to open journal device %s\n"),
1386                                 journal_device);
1387                         exit(1);
1388                 }
1389                 if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) {
1390                         com_err(program_name, 0,
1391                                 _("Journal dev blocksize (%d) smaller than "
1392                                   "minimum blocksize %d\n"), jfs->blocksize,
1393                                 -blocksize);
1394                         exit(1);
1395                 }
1396                 blocksize = jfs->blocksize;
1397                 fs_param.s_log_block_size =
1398                         int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
1399                 ext2fs_close(jfs);
1400         }
1401
1402         if (blocksize > sys_page_size) {
1403                 if (!force) {
1404                         com_err(program_name, 0,
1405                                 _("%d-byte blocks too big for system (max %d)"),
1406                                 blocksize, sys_page_size);
1407                         proceed_question();
1408                 }
1409                 fprintf(stderr, _("Warning: %d-byte blocks too big for system "
1410                                   "(max %d), forced to continue\n"),
1411                         blocksize, sys_page_size);
1412         }
1413         if (optind < argc) {
1414                 fs_param.s_blocks_count = parse_num_blocks(argv[optind++],
1415                                 fs_param.s_log_block_size);
1416                 if (!fs_param.s_blocks_count) {
1417                         com_err(program_name, 0, _("invalid blocks count - %s"),
1418                                 argv[optind - 1]);
1419                         exit(1);
1420                 }
1421         }
1422         if (optind < argc)
1423                 usage();
1424
1425         if (!force)
1426                 check_plausibility(device_name);
1427         check_mount(device_name, force, _("filesystem"));
1428
1429         fs_param.s_log_frag_size = fs_param.s_log_block_size;
1430
1431         if (noaction && fs_param.s_blocks_count) {
1432                 dev_size = fs_param.s_blocks_count;
1433                 retval = 0;
1434         } else {
1435         retry:
1436                 retval = ext2fs_get_device_size(device_name,
1437                                                 EXT2_BLOCK_SIZE(&fs_param),
1438                                                 &dev_size);
1439                 if ((retval == EFBIG) &&
1440                     (blocksize == 0) &&
1441                     (fs_param.s_log_block_size == 0)) {
1442                         fs_param.s_log_block_size = 2;
1443                         blocksize = 4096;
1444                         goto retry;
1445                 }
1446         }
1447
1448         if (retval && (retval != EXT2_ET_UNIMPLEMENTED)) {
1449                 com_err(program_name, retval,
1450                         _("while trying to determine filesystem size"));
1451                 exit(1);
1452         }
1453         if (!fs_param.s_blocks_count) {
1454                 if (retval == EXT2_ET_UNIMPLEMENTED) {
1455                         com_err(program_name, 0,
1456                                 _("Couldn't determine device size; you "
1457                                 "must specify\nthe size of the "
1458                                 "filesystem\n"));
1459                         exit(1);
1460                 } else {
1461                         if (dev_size == 0) {
1462                                 com_err(program_name, 0,
1463                                 _("Device size reported to be zero.  "
1464                                   "Invalid partition specified, or\n\t"
1465                                   "partition table wasn't reread "
1466                                   "after running fdisk, due to\n\t"
1467                                   "a modified partition being busy "
1468                                   "and in use.  You may need to reboot\n\t"
1469                                   "to re-read your partition table.\n"
1470                                   ));
1471                                 exit(1);
1472                         }
1473                         fs_param.s_blocks_count = dev_size;
1474                         if (sys_page_size > EXT2_BLOCK_SIZE(&fs_param))
1475                                 fs_param.s_blocks_count &= ~((sys_page_size /
1476                                            EXT2_BLOCK_SIZE(&fs_param))-1);
1477                 }
1478
1479         } else if (!force && (fs_param.s_blocks_count > dev_size)) {
1480                 com_err(program_name, 0,
1481                         _("Filesystem larger than apparent device size."));
1482                 proceed_question();
1483         }
1484
1485         fs_types = parse_fs_type(fs_type, usage_types, &fs_param, argv[0]);
1486         if (!fs_types) {
1487                 fprintf(stderr, _("Failed to parse fs types list\n"));
1488                 exit(1);
1489         }
1490         if (verbose) {
1491                 fputs("Fs_types for mke2fs.conf resolution: ", stdout);
1492                 print_str_list(fs_types);
1493         }
1494
1495         if (!fs_type) {
1496                 int megs = (__u64)fs_param.s_blocks_count *
1497                         (EXT2_BLOCK_SIZE(&fs_param) / 1024) / 1024;
1498
1499                 if (fs_param.s_feature_incompat &
1500                     EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)
1501                         fs_type = "journal";
1502                 else if (megs <= 3)
1503                         fs_type = "floppy";
1504                 else if (megs <= 512)
1505                         fs_type = "small";
1506                 else
1507                         fs_type = "default";
1508         }
1509
1510         /* Figure out what features should be enabled */
1511
1512         tmp = NULL;
1513         if (fs_param.s_rev_level != EXT2_GOOD_OLD_REV) {
1514                 char **cpp;
1515
1516                 tmp = get_string_from_profile(fs_types, "base_features",
1517                       "sparse_super,filetype,resize_inode,dir_index");
1518                 edit_feature(tmp, &fs_param.s_feature_compat);
1519                 free(tmp);
1520
1521                 for (cpp = fs_types; *cpp; cpp++) {
1522                         tmp = NULL;
1523                         profile_get_string(profile, "fs_types", *cpp,
1524                                            "features", "", &tmp);
1525                         if (tmp && *tmp)
1526                                 edit_feature(tmp, &fs_param.s_feature_compat);
1527                         if (tmp)
1528                                 free(tmp);
1529                 }
1530                 tmp = get_string_from_profile(fs_types, "default_features",
1531                                               "");
1532         }
1533         edit_feature(fs_features ? fs_features : tmp,
1534                      &fs_param.s_feature_compat);
1535         if (tmp)
1536                 free(tmp);
1537
1538         if (r_opt == EXT2_GOOD_OLD_REV &&
1539             (fs_param.s_feature_compat || fs_param.s_feature_incompat ||
1540              fs_param.s_feature_incompat)) {
1541                 fprintf(stderr, _("Filesystem features not supported "
1542                                   "with revision 0 filesystems\n"));
1543                 exit(1);
1544         }
1545
1546         if (s_opt > 0) {
1547                 if (r_opt == EXT2_GOOD_OLD_REV) {
1548                         fprintf(stderr, _("Sparse superblocks not supported "
1549                                   "with revision 0 filesystems\n"));
1550                         exit(1);
1551                 }
1552                 fs_param.s_feature_ro_compat |=
1553                         EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1554         } else if (s_opt == 0)
1555                 fs_param.s_feature_ro_compat &=
1556                         ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1557
1558         if (journal_size != 0) {
1559                 if (r_opt == EXT2_GOOD_OLD_REV) {
1560                         fprintf(stderr, _("Journals not supported "
1561                                   "with revision 0 filesystems\n"));
1562                         exit(1);
1563                 }
1564                 fs_param.s_feature_compat |=
1565                         EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1566         }
1567
1568         if (fs_param.s_feature_incompat &
1569             EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
1570                 reserved_ratio = 0;
1571                 fs_param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV;
1572                 fs_param.s_feature_compat = 0;
1573                 fs_param.s_feature_ro_compat = 0;
1574         }
1575
1576         /* Set first meta blockgroup via an environment variable */
1577         /* (this is mostly for debugging purposes) */
1578         if ((fs_param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) &&
1579             ((tmp = getenv("MKE2FS_FIRST_META_BG"))))
1580                 fs_param.s_first_meta_bg = atoi(tmp);
1581
1582         /* Get the hardware sector size, if available */
1583         retval = ext2fs_get_device_sectsize(device_name, &sector_size);
1584         if (retval) {
1585                 com_err(program_name, retval,
1586                         _("while trying to determine hardware sector size"));
1587                 exit(1);
1588         }
1589
1590         if ((tmp = getenv("MKE2FS_DEVICE_SECTSIZE")) != NULL)
1591                 sector_size = atoi(tmp);
1592
1593         if (blocksize <= 0) {
1594                 use_bsize = get_int_from_profile(fs_types, "blocksize", 4096);
1595
1596                 if (use_bsize == -1) {
1597                         use_bsize = sys_page_size;
1598                         if ((linux_version_code < (2*65536 + 6*256)) &&
1599                             (use_bsize > 4096))
1600                                 use_bsize = 4096;
1601                 }
1602                 if (sector_size && use_bsize < sector_size)
1603                         use_bsize = sector_size;
1604                 if ((blocksize < 0) && (use_bsize < (-blocksize)))
1605                         use_bsize = -blocksize;
1606                 blocksize = use_bsize;
1607                 fs_param.s_blocks_count /= blocksize / 1024;
1608         }
1609
1610         if (inode_ratio == 0) {
1611                 inode_ratio = get_int_from_profile(fs_types, "inode_ratio",
1612                                                    8192);
1613                 if (inode_ratio < blocksize)
1614                         inode_ratio = blocksize;
1615         }
1616
1617         fs_param.s_log_frag_size = fs_param.s_log_block_size =
1618                 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
1619
1620         blocksize = EXT2_BLOCK_SIZE(&fs_param);
1621
1622         lazy_itable_init = get_bool_from_profile(fs_types,
1623                                                  "lazy_itable_init", 0);
1624
1625         if (extended_opts)
1626                 parse_extended_opts(&fs_param, extended_opts);
1627
1628         /* Since sparse_super is the default, we would only have a problem
1629          * here if it was explicitly disabled.
1630          */
1631         if ((fs_param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE) &&
1632             !(fs_param.s_feature_ro_compat&EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1633                 com_err(program_name, 0,
1634                         _("reserved online resize blocks not supported "
1635                           "on non-sparse filesystem"));
1636                 exit(1);
1637         }
1638
1639         if (fs_param.s_blocks_per_group) {
1640                 if (fs_param.s_blocks_per_group < 256 ||
1641                     fs_param.s_blocks_per_group > 8 * (unsigned) blocksize) {
1642                         com_err(program_name, 0,
1643                                 _("blocks per group count out of range"));
1644                         exit(1);
1645                 }
1646         }
1647
1648         if (inode_size == 0)
1649                 inode_size = get_int_from_profile(fs_types, "inode_size", 0);
1650
1651         if (inode_size && fs_param.s_rev_level >= EXT2_DYNAMIC_REV) {
1652                 if (inode_size < EXT2_GOOD_OLD_INODE_SIZE ||
1653                     inode_size > EXT2_BLOCK_SIZE(&fs_param) ||
1654                     inode_size & (inode_size - 1)) {
1655                         com_err(program_name, 0,
1656                                 _("invalid inode size %d (min %d/max %d)"),
1657                                 inode_size, EXT2_GOOD_OLD_INODE_SIZE,
1658                                 blocksize);
1659                         exit(1);
1660                 }
1661                 fs_param.s_inode_size = inode_size;
1662         }
1663
1664         /* Make sure number of inodes specified will fit in 32 bits */
1665         if (num_inodes == 0) {
1666                 unsigned long long n;
1667                 n = (unsigned long long) fs_param.s_blocks_count * blocksize / inode_ratio;
1668                 if (n > ~0U) {
1669                         com_err(program_name, 0,
1670                             _("too many inodes (%llu), raise inode ratio?"), n);
1671                         exit(1);
1672                 }
1673         } else if (num_inodes > ~0U) {
1674                 com_err(program_name, 0,
1675                         _("too many inodes (%llu), specify < 2^32 inodes"),
1676                           num_inodes);
1677                 exit(1);
1678         }
1679         /*
1680          * Calculate number of inodes based on the inode ratio
1681          */
1682         fs_param.s_inodes_count = num_inodes ? num_inodes :
1683                 ((__u64) fs_param.s_blocks_count * blocksize)
1684                         / inode_ratio;
1685
1686         if ((((long long)fs_param.s_inodes_count) *
1687              (inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE)) >=
1688             (((long long)fs_param.s_blocks_count) *
1689              EXT2_BLOCK_SIZE(&fs_param))) {
1690                 com_err(program_name, 0, _("inode_size (%u) * inodes_count "
1691                                           "(%u) too big for a\n\t"
1692                                           "filesystem with %lu blocks, "
1693                                           "specify higher inode_ratio (-i)\n\t"
1694                                           "or lower inode count (-N).\n"),
1695                         inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE,
1696                         fs_param.s_inodes_count,
1697                         (unsigned long) fs_param.s_blocks_count);
1698                 exit(1);
1699         }
1700
1701         /*
1702          * Calculate number of blocks to reserve
1703          */
1704         fs_param.s_r_blocks_count = e2p_percent(reserved_ratio,
1705                                                 fs_param.s_blocks_count);
1706 }
1707
1708 int main (int argc, char *argv[])
1709 {
1710         errcode_t       retval = 0;
1711         ext2_filsys     fs;
1712         badblocks_list  bb_list = 0;
1713         unsigned int    journal_blocks;
1714         unsigned int    i;
1715         int             val;
1716         io_manager      io_ptr;
1717
1718 #ifdef ENABLE_NLS
1719         setlocale(LC_MESSAGES, "");
1720         setlocale(LC_CTYPE, "");
1721         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1722         textdomain(NLS_CAT_NAME);
1723 #endif
1724         PRS(argc, argv);
1725
1726 #ifdef CONFIG_TESTIO_DEBUG
1727         io_ptr = test_io_manager;
1728         test_io_backing_manager = unix_io_manager;
1729 #else
1730         io_ptr = unix_io_manager;
1731 #endif
1732
1733         /*
1734          * Initialize the superblock....
1735          */
1736         retval = ext2fs_initialize(device_name, EXT2_FLAG_EXCLUSIVE, &fs_param,
1737                                    io_ptr, &fs);
1738         if (retval) {
1739                 com_err(device_name, retval, _("while setting up superblock"));
1740                 exit(1);
1741         }
1742
1743         if (fs_param.s_flags & EXT2_FLAGS_TEST_FILESYS)
1744                 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
1745
1746         /*
1747          * Wipe out the old on-disk superblock
1748          */
1749         if (!noaction)
1750                 zap_sector(fs, 2, 6);
1751
1752         /*
1753          * Generate a UUID for it...
1754          */
1755         uuid_generate(fs->super->s_uuid);
1756
1757         /*
1758          * Initialize the directory index variables
1759          */
1760         fs->super->s_def_hash_version = EXT2_HASH_TEA;
1761         uuid_generate((unsigned char *) fs->super->s_hash_seed);
1762
1763         /*
1764          * Add "jitter" to the superblock's check interval so that we
1765          * don't check all the filesystems at the same time.  We use a
1766          * kludgy hack of using the UUID to derive a random jitter value.
1767          */
1768         for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++)
1769                 val += fs->super->s_uuid[i];
1770         fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT;
1771
1772         /*
1773          * Override the creator OS, if applicable
1774          */
1775         if (creator_os && !set_os(fs->super, creator_os)) {
1776                 com_err (program_name, 0, _("unknown os - %s"), creator_os);
1777                 exit(1);
1778         }
1779
1780         /*
1781          * For the Hurd, we will turn off filetype since it doesn't
1782          * support it.
1783          */
1784         if (fs->super->s_creator_os == EXT2_OS_HURD)
1785                 fs->super->s_feature_incompat &=
1786                         ~EXT2_FEATURE_INCOMPAT_FILETYPE;
1787
1788         /*
1789          * Set the volume label...
1790          */
1791         if (volume_label) {
1792                 memset(fs->super->s_volume_name, 0,
1793                        sizeof(fs->super->s_volume_name));
1794                 strncpy(fs->super->s_volume_name, volume_label,
1795                         sizeof(fs->super->s_volume_name));
1796         }
1797
1798         /*
1799          * Set the last mount directory
1800          */
1801         if (mount_dir) {
1802                 memset(fs->super->s_last_mounted, 0,
1803                        sizeof(fs->super->s_last_mounted));
1804                 strncpy(fs->super->s_last_mounted, mount_dir,
1805                         sizeof(fs->super->s_last_mounted));
1806         }
1807
1808         if (!quiet || noaction)
1809                 show_stats(fs);
1810
1811         if (noaction)
1812                 exit(0);
1813
1814         if (fs->super->s_feature_incompat &
1815             EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
1816                 create_journal_dev(fs);
1817                 exit(ext2fs_close(fs) ? 1 : 0);
1818         }
1819
1820         if (bad_blocks_filename)
1821                 read_bb_file(fs, &bb_list, bad_blocks_filename);
1822         if (cflag)
1823                 test_disk(fs, &bb_list);
1824
1825         handle_bad_blocks(fs, bb_list);
1826         fs->stride = fs_stride = fs->super->s_raid_stride;
1827         retval = ext2fs_allocate_tables(fs);
1828         if (retval) {
1829                 com_err(program_name, retval,
1830                         _("while trying to allocate filesystem tables"));
1831                 exit(1);
1832         }
1833         if (super_only) {
1834                 fs->super->s_state |= EXT2_ERROR_FS;
1835                 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY);
1836         } else {
1837                 /* rsv must be a power of two (64kB is MD RAID sb alignment) */
1838                 unsigned int rsv = 65536 / fs->blocksize;
1839                 unsigned long blocks = fs->super->s_blocks_count;
1840                 unsigned long start;
1841                 blk_t ret_blk;
1842
1843 #ifdef ZAP_BOOTBLOCK
1844                 zap_sector(fs, 0, 2);
1845 #endif
1846
1847                 /*
1848                  * Wipe out any old MD RAID (or other) metadata at the end
1849                  * of the device.  This will also verify that the device is
1850                  * as large as we think.  Be careful with very small devices.
1851                  */
1852                 start = (blocks & ~(rsv - 1));
1853                 if (start > rsv)
1854                         start -= rsv;
1855                 if (start > 0)
1856                         retval = zero_blocks(fs, start, blocks - start,
1857                                              NULL, &ret_blk, NULL);
1858
1859                 if (retval) {
1860                         com_err(program_name, retval,
1861                                 _("while zeroing block %u at end of filesystem"),
1862                                 ret_blk);
1863                 }
1864                 write_inode_tables(fs, lazy_itable_init);
1865                 create_root_dir(fs);
1866                 create_lost_and_found(fs);
1867                 reserve_inodes(fs);
1868                 create_bad_block_inode(fs, bb_list);
1869                 if (fs->super->s_feature_compat &
1870                     EXT2_FEATURE_COMPAT_RESIZE_INODE) {
1871                         retval = ext2fs_create_resize_inode(fs);
1872                         if (retval) {
1873                                 com_err("ext2fs_create_resize_inode", retval,
1874                                 _("while reserving blocks for online resize"));
1875                                 exit(1);
1876                         }
1877                 }
1878         }
1879
1880         if (journal_device) {
1881                 ext2_filsys     jfs;
1882
1883                 if (!force)
1884                         check_plausibility(journal_device);
1885                 check_mount(journal_device, force, _("journal"));
1886
1887                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1888                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1889                                      fs->blocksize, unix_io_manager, &jfs);
1890                 if (retval) {
1891                         com_err(program_name, retval,
1892                                 _("while trying to open journal device %s\n"),
1893                                 journal_device);
1894                         exit(1);
1895                 }
1896                 if (!quiet) {
1897                         printf(_("Adding journal to device %s: "),
1898                                journal_device);
1899                         fflush(stdout);
1900                 }
1901                 retval = ext2fs_add_journal_device(fs, jfs);
1902                 if(retval) {
1903                         com_err (program_name, retval,
1904                                  _("\n\twhile trying to add journal to device %s"),
1905                                  journal_device);
1906                         exit(1);
1907                 }
1908                 if (!quiet)
1909                         printf(_("done\n"));
1910                 ext2fs_close(jfs);
1911                 free(journal_device);
1912         } else if ((journal_size) ||
1913                    (fs_param.s_feature_compat &
1914                     EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1915                 journal_blocks = figure_journal_size(journal_size, fs);
1916
1917                 if (!journal_blocks) {
1918                         fs->super->s_feature_compat &=
1919                                 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1920                         goto no_journal;
1921                 }
1922                 if (!quiet) {
1923                         printf(_("Creating journal (%u blocks): "),
1924                                journal_blocks);
1925                         fflush(stdout);
1926                 }
1927                 retval = ext2fs_add_journal_inode(fs, journal_blocks,
1928                                                   journal_flags);
1929                 if (retval) {
1930                         com_err (program_name, retval,
1931                                  _("\n\twhile trying to create journal"));
1932                         exit(1);
1933                 }
1934                 if (!quiet)
1935                         printf(_("done\n"));
1936         }
1937 no_journal:
1938
1939         if (!quiet)
1940                 printf(_("Writing superblocks and "
1941                        "filesystem accounting information: "));
1942         retval = ext2fs_flush(fs);
1943         if (retval) {
1944                 fprintf(stderr,
1945                         _("\nWarning, had trouble writing out superblocks."));
1946         }
1947         if (!quiet) {
1948                 printf(_("done\n\n"));
1949                 if (!getenv("MKE2FS_SKIP_CHECK_MSG"))
1950                         print_check_message(fs);
1951         }
1952         val = ext2fs_close(fs);
1953         remove_error_table(&et_ext2_error_table);
1954         remove_error_table(&et_prof_error_table);
1955         profile_release(profile);
1956         return (retval || val) ? 1 : 0;
1957 }