misc/dumpe2fs.c

   1 /*
   2  * dumpe2fs.c           - List the control structures of a second
   3  *                        extended filesystem
   4  *
   5  * Copyright (C) 1992, 1993, 1994  Remy Card <card@masi.ibp.fr>
   6  *                                 Laboratoire MASI, Institut Blaise Pascal
   7  *                                 Universite Pierre et Marie Curie (Paris VI)
   8  *
   9  * Copyright 1995, 1996, 1997 by Theodore Ts'o.
  10  *
  11  * %Begin-Header%
  12  * This file may be redistributed under the terms of the GNU Public
  13  * License.
  14  * %End-Header%
  15  */
  16
  17 /*
  18  * History:
  19  * 94/01/09     - Creation
  20  * 94/02/27     - Ported to use the ext2fs library
  21  */
  22
  23 #include "config.h"
  24 #ifdef HAVE_GETOPT_H
  25 #include <getopt.h>
  26 #else
  27 extern char *optarg;
  28 extern int optind;
  29 #endif
  30 #include <fcntl.h>
  31 #include <stdio.h>
  32 #include <stdlib.h>
  33 #include <string.h>
  34 #include <unistd.h>
  35
  36 #include "ext2fs/ext2_fs.h"
  37
  38 #include "ext2fs/ext2fs.h"
  39 #include "e2p/e2p.h"
  40 #include "jfs_user.h"
  41 #include <uuid/uuid.h>
  42
  43 #include "../version.h"
  44 #include "nls-enable.h"
  45 #include "plausible.h"
  46
  47 #define in_use(m, x)    (ext2fs_test_bit ((x), (m)))
  48
  49 static const char * program_name = "dumpe2fs";
  50 static char * device_name = NULL;
  51 static int hex_format = 0;
  52 static int blocks64 = 0;
  53
  54 static void usage(void)
  55 {
  56         fprintf(stderr, _("Usage: %s [-bfghixV] [-o superblock=<num>] "
  57                  "[-o blocksize=<num>] device\n"), program_name);
  58         exit(1);
  59 }
  60
  61 static void print_number(unsigned long long num)
  62 {
  63         if (hex_format) {
  64                 if (blocks64)
  65                         printf("0x%08llx", num);
  66                 else
  67                         printf("0x%04llx", num);
  68         } else
  69                 printf("%llu", num);
  70 }
  71
  72 static void print_range(unsigned long long a, unsigned long long b)
  73 {
  74         if (hex_format) {
  75                 if (blocks64)
  76                         printf("0x%08llx-0x%08llx", a, b);
  77                 else
  78                         printf("0x%04llx-0x%04llx", a, b);
  79         } else
  80                 printf("%llu-%llu", a, b);
  81 }
  82
  83 static void print_free(unsigned long group, char * bitmap,
  84                        unsigned long num, unsigned long offset, int ratio)
  85 {
  86         int p = 0;
  87         unsigned long i;
  88         unsigned long j;
  89
  90         offset /= ratio;
  91         offset += group * num;
  92         for (i = 0; i < num; i++)
  93                 if (!in_use (bitmap, i))
  94                 {
  95                         if (p)
  96                                 printf (", ");
  97                         print_number((i + offset) * ratio);
  98                         for (j = i; j < num && !in_use (bitmap, j); j++)
  99                                 ;
 100                         if (--j != i) {
 101                                 fputc('-', stdout);
 102                                 print_number((j + offset) * ratio);
 103                                 i = j;
 104                         }
 105                         p = 1;
 106                 }
 107 }
 108
 109 static void print_bg_opt(int bg_flags, int mask,
 110                           const char *str, int *first)
 111 {
 112         if (bg_flags & mask) {
 113                 if (*first) {
 114                         fputs(" [", stdout);
 115                         *first = 0;
 116                 } else
 117                         fputs(", ", stdout);
 118                 fputs(str, stdout);
 119         }
 120 }
 121 static void print_bg_opts(ext2_filsys fs, dgrp_t i)
 122 {
 123         int first = 1, bg_flags = 0;
 124
 125         if (ext2fs_has_group_desc_csum(fs))
 126                 bg_flags = ext2fs_bg_flags(fs, i);
 127
 128         print_bg_opt(bg_flags, EXT2_BG_INODE_UNINIT, "INODE_UNINIT",
 129                      &first);
 130         print_bg_opt(bg_flags, EXT2_BG_BLOCK_UNINIT, "BLOCK_UNINIT",
 131                      &first);
 132         print_bg_opt(bg_flags, EXT2_BG_INODE_ZEROED, "ITABLE_ZEROED",
 133                      &first);
 134         if (!first)
 135                 fputc(']', stdout);
 136         fputc('\n', stdout);
 137 }
 138
 139 static void print_bg_rel_offset(ext2_filsys fs, blk64_t block, int itable,
 140                                 blk64_t first_block, blk64_t last_block)
 141 {
 142         if ((block >= first_block) && (block <= last_block)) {
 143                 if (itable && block == first_block)
 144                         return;
 145                 printf(" (+%u)", (unsigned)(block - first_block));
 146         } else if (fs->super->s_feature_incompat &
 147                    EXT4_FEATURE_INCOMPAT_FLEX_BG) {
 148                 dgrp_t flex_grp = ext2fs_group_of_blk2(fs, block);
 149                 printf(" (bg #%u + %u)", flex_grp,
 150                        (unsigned)(block-ext2fs_group_first_block2(fs,flex_grp)));
 151         }
 152 }
 153
 154 static void list_desc(ext2_filsys fs, int grp_only)
 155 {
 156         unsigned long i;
 157         blk64_t first_block, last_block;
 158         blk64_t super_blk, old_desc_blk, new_desc_blk;
 159         char *block_bitmap=NULL, *inode_bitmap=NULL;
 160         const char *units = _("blocks");
 161         int inode_blocks_per_group, old_desc_blocks, reserved_gdt;
 162         int             block_nbytes, inode_nbytes;
 163         int has_super;
 164         blk64_t         blk_itr = EXT2FS_B2C(fs, fs->super->s_first_data_block);
 165         ext2_ino_t      ino_itr = 1;
 166         errcode_t       retval;
 167
 168         if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
 169                                        EXT4_FEATURE_RO_COMPAT_BIGALLOC))
 170                 units = _("clusters");
 171
 172         block_nbytes = EXT2_CLUSTERS_PER_GROUP(fs->super) / 8;
 173         inode_nbytes = EXT2_INODES_PER_GROUP(fs->super) / 8;
 174
 175         if (fs->block_map)
 176                 block_bitmap = malloc(block_nbytes);
 177         if (fs->inode_map)
 178                 inode_bitmap = malloc(inode_nbytes);
 179
 180         inode_blocks_per_group = ((fs->super->s_inodes_per_group *
 181                                    EXT2_INODE_SIZE(fs->super)) +
 182                                   EXT2_BLOCK_SIZE(fs->super) - 1) /
 183                                  EXT2_BLOCK_SIZE(fs->super);
 184         reserved_gdt = fs->super->s_reserved_gdt_blocks;
 185         fputc('\n', stdout);
 186         first_block = fs->super->s_first_data_block;
 187         if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
 188                 old_desc_blocks = fs->super->s_first_meta_bg;
 189         else
 190                 old_desc_blocks = fs->desc_blocks;
 191         if (grp_only)
 192                 printf("group:block:super:gdt:bbitmap:ibitmap:itable\n");
 193         for (i = 0; i < fs->group_desc_count; i++) {
 194                 first_block = ext2fs_group_first_block2(fs, i);
 195                 last_block = ext2fs_group_last_block2(fs, i);
 196
 197                 ext2fs_super_and_bgd_loc2(fs, i, &super_blk,
 198                                           &old_desc_blk, &new_desc_blk, 0);
 199
 200                 if (grp_only) {
 201                         printf("%lu:%llu:", i, first_block);
 202                         if (i == 0 || super_blk)
 203                                 printf("%llu:", super_blk);
 204                         else
 205                                 printf("-1:");
 206                         if (old_desc_blk) {
 207                                 print_range(old_desc_blk,
 208                                             old_desc_blk + old_desc_blocks - 1);
 209                                 printf(":");
 210                         } else if (new_desc_blk)
 211                                 printf("%llu:", new_desc_blk);
 212                         else
 213                                 printf("-1:");
 214                         printf("%llu:%llu:%llu\n",
 215                                ext2fs_block_bitmap_loc(fs, i),
 216                                ext2fs_inode_bitmap_loc(fs, i),
 217                                ext2fs_inode_table_loc(fs, i));
 218                         continue;
 219                 }
 220
 221                 printf (_("Group %lu: (Blocks "), i);
 222                 print_range(first_block, last_block);
 223                 fputs(")", stdout);
 224                 print_bg_opts(fs, i);
 225                 if (ext2fs_has_group_desc_csum(fs)) {
 226                         unsigned csum = ext2fs_bg_checksum(fs, i);
 227                         unsigned exp_csum = ext2fs_group_desc_csum(fs, i);
 228
 229                         printf(_("  Checksum 0x%04x"), csum);
 230                         if (csum != exp_csum)
 231                                 printf(_(" (EXPECTED 0x%04x)"), exp_csum);
 232                         printf(_(", unused inodes %u\n"),
 233                                ext2fs_bg_itable_unused(fs, i));
 234                 }
 235                 has_super = ((i==0) || super_blk);
 236                 if (has_super) {
 237                         printf (_("  %s superblock at "),
 238                                 i == 0 ? _("Primary") : _("Backup"));
 239                         print_number(super_blk);
 240                 }
 241                 if (old_desc_blk) {
 242                         printf("%s", _(", Group descriptors at "));
 243                         print_range(old_desc_blk,
 244                                     old_desc_blk + old_desc_blocks - 1);
 245                         if (reserved_gdt) {
 246                                 printf("%s", _("\n  Reserved GDT blocks at "));
 247                                 print_range(old_desc_blk + old_desc_blocks,
 248                                             old_desc_blk + old_desc_blocks +
 249                                             reserved_gdt - 1);
 250                         }
 251                 } else if (new_desc_blk) {
 252                         fputc(has_super ? ',' : ' ', stdout);
 253                         printf("%s", _(" Group descriptor at "));
 254                         print_number(new_desc_blk);
 255                         has_super++;
 256                 }
 257                 if (has_super)
 258                         fputc('\n', stdout);
 259                 fputs(_("  Block bitmap at "), stdout);
 260                 print_number(ext2fs_block_bitmap_loc(fs, i));
 261                 print_bg_rel_offset(fs, ext2fs_block_bitmap_loc(fs, i), 0,
 262                                     first_block, last_block);
 263                 if (fs->super->s_feature_ro_compat &
 264                     EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)
 265                         printf(_(", csum 0x%08x"),
 266                                ext2fs_block_bitmap_checksum(fs, i));
 267                 fputs(_(", Inode bitmap at "), stdout);
 268                 print_number(ext2fs_inode_bitmap_loc(fs, i));
 269                 print_bg_rel_offset(fs, ext2fs_inode_bitmap_loc(fs, i), 0,
 270                                     first_block, last_block);
 271                 if (fs->super->s_feature_ro_compat &
 272                     EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)
 273                         printf(_(", csum 0x%08x"),
 274                                ext2fs_inode_bitmap_checksum(fs, i));
 275                 fputs(_("\n  Inode table at "), stdout);
 276                 print_range(ext2fs_inode_table_loc(fs, i),
 277                             ext2fs_inode_table_loc(fs, i) +
 278                             inode_blocks_per_group - 1);
 279                 print_bg_rel_offset(fs, ext2fs_inode_table_loc(fs, i), 1,
 280                                     first_block, last_block);
 281                 printf (_("\n  %u free %s, %u free inodes, "
 282                           "%u directories%s"),
 283                         ext2fs_bg_free_blocks_count(fs, i), units,
 284                         ext2fs_bg_free_inodes_count(fs, i),
 285                         ext2fs_bg_used_dirs_count(fs, i),
 286                         ext2fs_bg_itable_unused(fs, i) ? "" : "\n");
 287                 if (ext2fs_bg_itable_unused(fs, i))
 288                         printf (_(", %u unused inodes\n"),
 289                                 ext2fs_bg_itable_unused(fs, i));
 290                 if (block_bitmap) {
 291                         fputs(_("  Free blocks: "), stdout);
 292                         retval = ext2fs_get_block_bitmap_range2(fs->block_map,
 293                                  blk_itr, block_nbytes << 3, block_bitmap);
 294                         if (retval)
 295                                 com_err("list_desc", retval,
 296                                         "while reading block bitmap");
 297                         else
 298                                 print_free(i, block_bitmap,
 299                                            fs->super->s_clusters_per_group,
 300                                            fs->super->s_first_data_block,
 301                                            EXT2FS_CLUSTER_RATIO(fs));
 302                         fputc('\n', stdout);
 303                         blk_itr += fs->super->s_clusters_per_group;
 304                 }
 305                 if (inode_bitmap) {
 306                         fputs(_("  Free inodes: "), stdout);
 307                         retval = ext2fs_get_inode_bitmap_range2(fs->inode_map,
 308                                  ino_itr, inode_nbytes << 3, inode_bitmap);
 309                         if (retval)
 310                                 com_err("list_desc", retval,
 311                                         "while reading inode bitmap");
 312                         else
 313                                 print_free(i, inode_bitmap,
 314                                            fs->super->s_inodes_per_group,
 315                                            1, 1);
 316                         fputc('\n', stdout);
 317                         ino_itr += fs->super->s_inodes_per_group;
 318                 }
 319         }
 320         if (block_bitmap)
 321                 free(block_bitmap);
 322         if (inode_bitmap)
 323                 free(inode_bitmap);
 324 }
 325
 326 static void list_bad_blocks(ext2_filsys fs, int dump)
 327 {
 328         badblocks_list          bb_list = 0;
 329         badblocks_iterate       bb_iter;
 330         blk_t                   blk;
 331         errcode_t               retval;
 332         const char              *header, *fmt;
 333
 334         retval = ext2fs_read_bb_inode(fs, &bb_list);
 335         if (retval) {
 336                 com_err("ext2fs_read_bb_inode", retval, 0);
 337                 return;
 338         }
 339         retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
 340         if (retval) {
 341                 com_err("ext2fs_badblocks_list_iterate_begin", retval,
 342                         "%s", _("while printing bad block list"));
 343                 return;
 344         }
 345         if (dump) {
 346                 header = fmt = "%u\n";
 347         } else {
 348                 header =  _("Bad blocks: %u");
 349                 fmt = ", %u";
 350         }
 351         while (ext2fs_badblocks_list_iterate(bb_iter, &blk)) {
 352                 printf(header ? header : fmt, blk);
 353                 header = 0;
 354         }
 355         ext2fs_badblocks_list_iterate_end(bb_iter);
 356         if (!dump)
 357                 fputc('\n', stdout);
 358         ext2fs_badblocks_list_free(bb_list);
 359 }
 360
 361 static const char *journal_checksum_type_str(__u8 type)
 362 {
 363         switch (type) {
 364         case JBD2_CRC32C_CHKSUM:
 365                 return "crc32c";
 366         default:
 367                 return "unknown";
 368         }
 369 }
 370
 371 static void print_inline_journal_information(ext2_filsys fs)
 372 {
 373         journal_superblock_t    *jsb;
 374         struct ext2_inode       inode;
 375         ext2_file_t             journal_file;
 376         errcode_t               retval;
 377         ino_t                   ino = fs->super->s_journal_inum;
 378         char                    buf[1024];
 379         __u32                   *mask_ptr, mask, m;
 380         int                     i, j, size, printed = 0;
 381
 382         if (fs->flags & EXT2_FLAG_IMAGE_FILE)
 383                 return;
 384         retval = ext2fs_read_inode(fs, ino,  &inode);
 385         if (retval) {
 386                 com_err(program_name, retval, "%s",
 387                         _("while reading journal inode"));
 388                 exit(1);
 389         }
 390         retval = ext2fs_file_open2(fs, ino, &inode, 0, &journal_file);
 391         if (retval) {
 392                 com_err(program_name, retval, "%s",
 393                         _("while opening journal inode"));
 394                 exit(1);
 395         }
 396         retval = ext2fs_file_read(journal_file, buf, sizeof(buf), 0);
 397         if (retval) {
 398                 com_err(program_name, retval, "%s",
 399                         _("while reading journal super block"));
 400                 exit(1);
 401         }
 402         ext2fs_file_close(journal_file);
 403         jsb = (journal_superblock_t *) buf;
 404         if (be32_to_cpu(jsb->s_header.h_magic) != JFS_MAGIC_NUMBER) {
 405                 fprintf(stderr, "%s",
 406                         _("Journal superblock magic number invalid!\n"));
 407                 exit(1);
 408         }
 409         printf("%s", _("Journal features:        "));
 410         for (i=0, mask_ptr=&jsb->s_feature_compat; i <3; i++,mask_ptr++) {
 411                 mask = be32_to_cpu(*mask_ptr);
 412                 for (j=0,m=1; j < 32; j++, m<<=1) {
 413                         if (mask & m) {
 414                                 printf(" %s", e2p_jrnl_feature2string(i, m));
 415                                 printed++;
 416                         }
 417                 }
 418         }
 419         if (printed == 0)
 420                 printf(" (none)");
 421         printf("\n");
 422         fputs(_("Journal size:             "), stdout);
 423         if ((fs->super->s_feature_ro_compat &
 424              EXT4_FEATURE_RO_COMPAT_HUGE_FILE) &&
 425             (inode.i_flags & EXT4_HUGE_FILE_FL))
 426                 size = inode.i_blocks / (fs->blocksize / 1024);
 427         else
 428                 size = inode.i_blocks >> 1;
 429         if (size < 8192)
 430                 printf("%uk\n", size);
 431         else
 432                 printf("%uM\n", size >> 10);
 433         printf(_("Journal length:           %u\n"
 434                  "Journal sequence:         0x%08x\n"
 435                  "Journal start:            %u\n"),
 436                (unsigned int)ntohl(jsb->s_maxlen),
 437                (unsigned int)ntohl(jsb->s_sequence),
 438                (unsigned int)ntohl(jsb->s_start));
 439         if (jsb->s_feature_compat &
 440             ext2fs_cpu_to_be32(JFS_FEATURE_COMPAT_CHECKSUM))
 441                 printf("%s", _("Journal checksum type:    crc32\n"));
 442         if ((jsb->s_feature_incompat &
 443              ext2fs_cpu_to_be32(JFS_FEATURE_INCOMPAT_CSUM_V3)) ||
 444             (jsb->s_feature_incompat &
 445              ext2fs_cpu_to_be32(JFS_FEATURE_INCOMPAT_CSUM_V2)))
 446                 printf(_("Journal checksum type:    %s\n"
 447                          "Journal checksum:         0x%08x\n"),
 448                        journal_checksum_type_str(jsb->s_checksum_type),
 449                        ext2fs_be32_to_cpu(jsb->s_checksum));
 450         if (jsb->s_errno != 0)
 451                 printf(_("Journal errno:            %d\n"),
 452                        (int) ntohl(jsb->s_errno));
 453 }
 454
 455 static void print_journal_information(ext2_filsys fs)
 456 {
 457         errcode_t       retval;
 458         char            buf[1024];
 459         char            str[80];
 460         unsigned int    i, j, printed = 0;
 461         journal_superblock_t    *jsb;
 462         __u32                   *mask_ptr, mask, m;
 463
 464         /* Get the journal superblock */
 465         if ((retval = io_channel_read_blk64(fs->io,
 466                                             fs->super->s_first_data_block + 1,
 467                                             -1024, buf))) {
 468                 com_err(program_name, retval, "%s",
 469                         _("while reading journal superblock"));
 470                 exit(1);
 471         }
 472         jsb = (journal_superblock_t *) buf;
 473         if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
 474             (jsb->s_header.h_blocktype !=
 475              (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
 476                 com_err(program_name, 0, "%s",
 477                         _("Couldn't find journal superblock magic numbers"));
 478                 exit(1);
 479         }
 480
 481         if (jsb->s_feature_compat &
 482             ext2fs_cpu_to_be32(JFS_FEATURE_COMPAT_CHECKSUM))
 483                 printf("%s", _("Journal checksum type:    crc32\n"));
 484         if ((jsb->s_feature_incompat &
 485              ext2fs_cpu_to_be32(JFS_FEATURE_INCOMPAT_CSUM_V3)) ||
 486             (jsb->s_feature_incompat &
 487              ext2fs_cpu_to_be32(JFS_FEATURE_INCOMPAT_CSUM_V2)))
 488                 printf(_("Journal checksum type:    %s\n"
 489                          "Journal checksum:         0x%08x\n"),
 490                        journal_checksum_type_str(jsb->s_checksum_type),
 491                        ext2fs_be32_to_cpu(jsb->s_checksum));
 492
 493         printf("%s", _("Journal features:        "));
 494         for (i = 0, mask_ptr = &jsb->s_feature_compat; i < 3; i++, mask_ptr++) {
 495                 mask = be32_to_cpu(*mask_ptr);
 496                 for (j = 0, m = 1; j < 32; j++, m <<= 1) {
 497                         if (mask & m) {
 498                                 printf(" %s", e2p_jrnl_feature2string(i, m));
 499                                 printed++;
 500                         }
 501                 }
 502         }
 503
 504         printf(_("\nJournal block size:       %u\n"
 505                  "Journal length:           %u\n"
 506                  "Journal first block:      %u\n"
 507                  "Journal sequence:         0x%08x\n"
 508                  "Journal start:            %u\n"
 509                  "Journal number of users:  %u\n"),
 510                (unsigned int)ntohl(jsb->s_blocksize),  (unsigned int)ntohl(jsb->s_maxlen),
 511                (unsigned int)ntohl(jsb->s_first), (unsigned int)ntohl(jsb->s_sequence),
 512                (unsigned int)ntohl(jsb->s_start), (unsigned int)ntohl(jsb->s_nr_users));
 513
 514         for (i=0; i < ntohl(jsb->s_nr_users); i++) {
 515                 uuid_unparse(&jsb->s_users[i*16], str);
 516                 printf(i ? "                          %s\n"
 517                        : _("Journal users:            %s\n"),
 518                        str);
 519         }
 520 }
 521
 522 static void parse_extended_opts(const char *opts, blk64_t *superblock,
 523                                 int *blocksize)
 524 {
 525         char    *buf, *token, *next, *p, *arg, *badopt = 0;
 526         int     len;
 527         int     do_usage = 0;
 528
 529         len = strlen(opts);
 530         buf = malloc(len+1);
 531         if (!buf) {
 532                 fprintf(stderr, "%s",
 533                         _("Couldn't allocate memory to parse options!\n"));
 534                 exit(1);
 535         }
 536         strcpy(buf, opts);
 537         for (token = buf; token && *token; token = next) {
 538                 p = strchr(token, ',');
 539                 next = 0;
 540                 if (p) {
 541                         *p = 0;
 542                         next = p+1;
 543                 }
 544                 arg = strchr(token, '=');
 545                 if (arg) {
 546                         *arg = 0;
 547                         arg++;
 548                 }
 549                 if (strcmp(token, "superblock") == 0 ||
 550                     strcmp(token, "sb") == 0) {
 551                         if (!arg) {
 552                                 do_usage++;
 553                                 badopt = token;
 554                                 continue;
 555                         }
 556                         *superblock = strtoul(arg, &p, 0);
 557                         if (*p) {
 558                                 fprintf(stderr,
 559                                         _("Invalid superblock parameter: %s\n"),
 560                                         arg);
 561                                 do_usage++;
 562                                 continue;
 563                         }
 564                 } else if (strcmp(token, "blocksize") == 0 ||
 565                            strcmp(token, "bs") == 0) {
 566                         if (!arg) {
 567                                 do_usage++;
 568                                 badopt = token;
 569                                 continue;
 570                         }
 571                         *blocksize = strtoul(arg, &p, 0);
 572                         if (*p) {
 573                                 fprintf(stderr,
 574                                         _("Invalid blocksize parameter: %s\n"),
 575                                         arg);
 576                                 do_usage++;
 577                                 continue;
 578                         }
 579                 } else {
 580                         do_usage++;
 581                         badopt = token;
 582                 }
 583         }
 584         if (do_usage) {
 585                 fprintf(stderr, _("\nBad extended option(s) specified: %s\n\n"
 586                         "Extended options are separated by commas, "
 587                         "and may take an argument which\n"
 588                         "\tis set off by an equals ('=') sign.\n\n"
 589                         "Valid extended options are:\n"
 590                         "\tsuperblock=<superblock number>\n"
 591                         "\tblocksize=<blocksize>\n"),
 592                         badopt ? badopt : "");
 593                 free(buf);
 594                 exit(1);
 595         }
 596         free(buf);
 597 }
 598
 599 int main (int argc, char ** argv)
 600 {
 601         errcode_t       retval;
 602         ext2_filsys     fs;
 603         int             print_badblocks = 0;
 604         blk64_t         use_superblock = 0;
 605         int             use_blocksize = 0;
 606         int             image_dump = 0;
 607         int             force = 0;
 608         int             flags;
 609         int             header_only = 0;
 610         int             c;
 611         int             grp_only = 0;
 612
 613 #ifdef ENABLE_NLS
 614         setlocale(LC_MESSAGES, "");
 615         setlocale(LC_CTYPE, "");
 616         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
 617         textdomain(NLS_CAT_NAME);
 618         set_com_err_gettext(gettext);
 619 #endif
 620         add_error_table(&et_ext2_error_table);
 621         fprintf (stderr, "dumpe2fs %s (%s)\n", E2FSPROGS_VERSION,
 622                  E2FSPROGS_DATE);
 623         if (argc && *argv)
 624                 program_name = *argv;
 625
 626         while ((c = getopt(argc, argv, "bfghixVo:")) != EOF) {
 627                 switch (c) {
 628                 case 'b':
 629                         print_badblocks++;
 630                         break;
 631                 case 'f':
 632                         force++;
 633                         break;
 634                 case 'g':
 635                         grp_only++;
 636                         break;
 637                 case 'h':
 638                         header_only++;
 639                         break;
 640                 case 'i':
 641                         image_dump++;
 642                         break;
 643                 case 'o':
 644                         parse_extended_opts(optarg, &use_superblock,
 645                                             &use_blocksize);
 646                         break;
 647                 case 'V':
 648                         /* Print version number and exit */
 649                         fprintf(stderr, _("\tUsing %s\n"),
 650                                 error_message(EXT2_ET_BASE));
 651                         exit(0);
 652                 case 'x':
 653                         hex_format++;
 654                         break;
 655                 default:
 656                         usage();
 657                 }
 658         }
 659         if (optind != argc - 1) {
 660                 usage();
 661                 exit(1);
 662         }
 663         device_name = argv[optind++];
 664         flags = EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
 665         if (force)
 666                 flags |= EXT2_FLAG_FORCE;
 667         if (image_dump)
 668                 flags |= EXT2_FLAG_IMAGE_FILE;
 669 try_open_again:
 670         if (use_superblock && !use_blocksize) {
 671                 for (use_blocksize = EXT2_MIN_BLOCK_SIZE;
 672                      use_blocksize <= EXT2_MAX_BLOCK_SIZE;
 673                      use_blocksize *= 2) {
 674                         retval = ext2fs_open (device_name, flags,
 675                                               use_superblock,
 676                                               use_blocksize, unix_io_manager,
 677                                               &fs);
 678                         if (!retval)
 679                                 break;
 680                 }
 681         } else
 682                 retval = ext2fs_open (device_name, flags, use_superblock,
 683                                       use_blocksize, unix_io_manager, &fs);
 684         if (retval && !(flags & EXT2_FLAG_IGNORE_CSUM_ERRORS)) {
 685                 flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 686                 goto try_open_again;
 687         }
 688         if (!retval && (fs->flags & EXT2_FLAG_IGNORE_CSUM_ERRORS))
 689                 printf("%s", _("\n*** Checksum errors detected in filesystem!  Run e2fsck now!\n\n"));
 690         flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 691         if (retval) {
 692                 com_err (program_name, retval, _("while trying to open %s"),
 693                          device_name);
 694                 printf("%s", _("Couldn't find valid filesystem superblock.\n"));
 695                 if (retval == EXT2_ET_BAD_MAGIC)
 696                         check_plausibility(device_name, CHECK_FS_EXIST, NULL);
 697                 exit (1);
 698         }
 699         fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
 700         if (fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT)
 701                 blocks64 = 1;
 702         if (print_badblocks) {
 703                 list_bad_blocks(fs, 1);
 704         } else {
 705                 if (grp_only)
 706                         goto just_descriptors;
 707                 list_super (fs->super);
 708                 if (fs->super->s_feature_incompat &
 709                       EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
 710                         print_journal_information(fs);
 711                         ext2fs_close_free(&fs);
 712                         exit(0);
 713                 }
 714                 if ((fs->super->s_feature_compat &
 715                      EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
 716                     (fs->super->s_journal_inum != 0))
 717                         print_inline_journal_information(fs);
 718                 list_bad_blocks(fs, 0);
 719                 if (header_only) {
 720                         ext2fs_close_free(&fs);
 721                         exit (0);
 722                 }
 723                 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
 724 try_bitmaps_again:
 725                 retval = ext2fs_read_bitmaps (fs);
 726                 if (retval && !(fs->flags & EXT2_FLAG_IGNORE_CSUM_ERRORS)) {
 727                         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 728                         goto try_bitmaps_again;
 729                 }
 730                 if (!retval && (fs->flags & EXT2_FLAG_IGNORE_CSUM_ERRORS))
 731                         printf("%s", _("\n*** Checksum errors detected in bitmaps!  Run e2fsck now!\n\n"));
 732 just_descriptors:
 733                 list_desc(fs, grp_only);
 734                 if (retval) {
 735                         printf(_("\n%s: %s: error reading bitmaps: %s\n"),
 736                                program_name, device_name,
 737                                error_message(retval));
 738                 }
 739         }
 740         ext2fs_close_free(&fs);
 741         remove_error_table(&et_ext2_error_table);
 742         exit (0);
 743 }