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