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 "ext2fs/kernel-jbd.h"
  41 #include <uuid/uuid.h>
  42
  43 #include "support/nls-enable.h"
  44 #include "support/plausible.h"
  45 #include "../version.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                 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(_(" csum 0x%04x"), csum);
 229                         if (csum != exp_csum)
 230                                 printf(_(" (EXPECTED 0x%04x)"), exp_csum);
 231                 }
 232                 print_bg_opts(fs, i);
 233                 has_super = ((i==0) || super_blk);
 234                 if (has_super) {
 235                         printf (_("  %s superblock at "),
 236                                 i == 0 ? _("Primary") : _("Backup"));
 237                         print_number(super_blk);
 238                 }
 239                 if (old_desc_blk) {
 240                         printf("%s", _(", Group descriptors at "));
 241                         print_range(old_desc_blk,
 242                                     old_desc_blk + old_desc_blocks - 1);
 243                         if (reserved_gdt) {
 244                                 printf("%s", _("\n  Reserved GDT blocks at "));
 245                                 print_range(old_desc_blk + old_desc_blocks,
 246                                             old_desc_blk + old_desc_blocks +
 247                                             reserved_gdt - 1);
 248                         }
 249                 } else if (new_desc_blk) {
 250                         fputc(has_super ? ',' : ' ', stdout);
 251                         printf("%s", _(" Group descriptor at "));
 252                         print_number(new_desc_blk);
 253                         has_super++;
 254                 }
 255                 if (has_super)
 256                         fputc('\n', stdout);
 257                 fputs(_("  Block bitmap at "), stdout);
 258                 print_number(ext2fs_block_bitmap_loc(fs, i));
 259                 print_bg_rel_offset(fs, ext2fs_block_bitmap_loc(fs, i), 0,
 260                                     first_block, last_block);
 261                 if (fs->super->s_feature_ro_compat &
 262                     EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)
 263                         printf(_(", csum 0x%08x"),
 264                                ext2fs_block_bitmap_checksum(fs, i));
 265                 if (getenv("DUMPE2FS_IGNORE_80COL"))
 266                         fputs(_(","), stdout);
 267                 else
 268                         fputs(_("\n "), stdout);
 269                 fputs(_(" Inode bitmap at "), stdout);
 270                 print_number(ext2fs_inode_bitmap_loc(fs, i));
 271                 print_bg_rel_offset(fs, ext2fs_inode_bitmap_loc(fs, i), 0,
 272                                     first_block, last_block);
 273                 if (fs->super->s_feature_ro_compat &
 274                     EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)
 275                         printf(_(", csum 0x%08x"),
 276                                ext2fs_inode_bitmap_checksum(fs, i));
 277                 fputs(_("\n  Inode table at "), stdout);
 278                 print_range(ext2fs_inode_table_loc(fs, i),
 279                             ext2fs_inode_table_loc(fs, i) +
 280                             inode_blocks_per_group - 1);
 281                 print_bg_rel_offset(fs, ext2fs_inode_table_loc(fs, i), 1,
 282                                     first_block, last_block);
 283                 printf (_("\n  %u free %s, %u free inodes, "
 284                           "%u directories%s"),
 285                         ext2fs_bg_free_blocks_count(fs, i), units,
 286                         ext2fs_bg_free_inodes_count(fs, i),
 287                         ext2fs_bg_used_dirs_count(fs, i),
 288                         ext2fs_bg_itable_unused(fs, i) ? "" : "\n");
 289                 if (ext2fs_bg_itable_unused(fs, i))
 290                         printf (_(", %u unused inodes\n"),
 291                                 ext2fs_bg_itable_unused(fs, i));
 292                 if (block_bitmap) {
 293                         fputs(_("  Free blocks: "), stdout);
 294                         retval = ext2fs_get_block_bitmap_range2(fs->block_map,
 295                                  blk_itr, block_nbytes << 3, block_bitmap);
 296                         if (retval)
 297                                 com_err("list_desc", retval,
 298                                         "while reading block bitmap");
 299                         else
 300                                 print_free(i, block_bitmap,
 301                                            fs->super->s_clusters_per_group,
 302                                            fs->super->s_first_data_block,
 303                                            EXT2FS_CLUSTER_RATIO(fs));
 304                         fputc('\n', stdout);
 305                         blk_itr += fs->super->s_clusters_per_group;
 306                 }
 307                 if (inode_bitmap) {
 308                         fputs(_("  Free inodes: "), stdout);
 309                         retval = ext2fs_get_inode_bitmap_range2(fs->inode_map,
 310                                  ino_itr, inode_nbytes << 3, inode_bitmap);
 311                         if (retval)
 312                                 com_err("list_desc", retval,
 313                                         "while reading inode bitmap");
 314                         else
 315                                 print_free(i, inode_bitmap,
 316                                            fs->super->s_inodes_per_group,
 317                                            1, 1);
 318                         fputc('\n', stdout);
 319                         ino_itr += fs->super->s_inodes_per_group;
 320                 }
 321         }
 322         if (block_bitmap)
 323                 free(block_bitmap);
 324         if (inode_bitmap)
 325                 free(inode_bitmap);
 326 }
 327
 328 static void list_bad_blocks(ext2_filsys fs, int dump)
 329 {
 330         badblocks_list          bb_list = 0;
 331         badblocks_iterate       bb_iter;
 332         blk_t                   blk;
 333         errcode_t               retval;
 334         const char              *header, *fmt;
 335
 336         retval = ext2fs_read_bb_inode(fs, &bb_list);
 337         if (retval) {
 338                 com_err("ext2fs_read_bb_inode", retval, 0);
 339                 return;
 340         }
 341         retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
 342         if (retval) {
 343                 com_err("ext2fs_badblocks_list_iterate_begin", retval,
 344                         "%s", _("while printing bad block list"));
 345                 return;
 346         }
 347         if (dump) {
 348                 header = fmt = "%u\n";
 349         } else {
 350                 header =  _("Bad blocks: %u");
 351                 fmt = ", %u";
 352         }
 353         while (ext2fs_badblocks_list_iterate(bb_iter, &blk)) {
 354                 printf(header ? header : fmt, blk);
 355                 header = 0;
 356         }
 357         ext2fs_badblocks_list_iterate_end(bb_iter);
 358         if (!dump)
 359                 fputc('\n', stdout);
 360         ext2fs_badblocks_list_free(bb_list);
 361 }
 362
 363 static const char *journal_checksum_type_str(__u8 type)
 364 {
 365         switch (type) {
 366         case JBD2_CRC32C_CHKSUM:
 367                 return "crc32c";
 368         default:
 369                 return "unknown";
 370         }
 371 }
 372
 373 static void print_inline_journal_information(ext2_filsys fs)
 374 {
 375         journal_superblock_t    *jsb;
 376         struct ext2_inode       inode;
 377         ext2_file_t             journal_file;
 378         errcode_t               retval;
 379         ino_t                   ino = fs->super->s_journal_inum;
 380         char                    buf[1024];
 381         __u32                   *mask_ptr, mask, m;
 382         int                     i, j, size, printed = 0;
 383
 384         if (fs->flags & EXT2_FLAG_IMAGE_FILE)
 385                 return;
 386         retval = ext2fs_read_inode(fs, ino,  &inode);
 387         if (retval) {
 388                 com_err(program_name, retval, "%s",
 389                         _("while reading journal inode"));
 390                 exit(1);
 391         }
 392         retval = ext2fs_file_open2(fs, ino, &inode, 0, &journal_file);
 393         if (retval) {
 394                 com_err(program_name, retval, "%s",
 395                         _("while opening journal inode"));
 396                 exit(1);
 397         }
 398         retval = ext2fs_file_read(journal_file, buf, sizeof(buf), 0);
 399         if (retval) {
 400                 com_err(program_name, retval, "%s",
 401                         _("while reading journal super block"));
 402                 exit(1);
 403         }
 404         ext2fs_file_close(journal_file);
 405         jsb = (journal_superblock_t *) buf;
 406         if (be32_to_cpu(jsb->s_header.h_magic) != JFS_MAGIC_NUMBER) {
 407                 fprintf(stderr, "%s",
 408                         _("Journal superblock magic number invalid!\n"));
 409                 exit(1);
 410         }
 411         printf("%s", _("Journal features:        "));
 412         for (i=0, mask_ptr=&jsb->s_feature_compat; i <3; i++,mask_ptr++) {
 413                 mask = be32_to_cpu(*mask_ptr);
 414                 for (j=0,m=1; j < 32; j++, m<<=1) {
 415                         if (mask & m) {
 416                                 printf(" %s", e2p_jrnl_feature2string(i, m));
 417                                 printed++;
 418                         }
 419                 }
 420         }
 421         if (printed == 0)
 422                 printf(" (none)");
 423         printf("\n");
 424         fputs(_("Journal size:             "), stdout);
 425         if ((fs->super->s_feature_ro_compat &
 426              EXT4_FEATURE_RO_COMPAT_HUGE_FILE) &&
 427             (inode.i_flags & EXT4_HUGE_FILE_FL))
 428                 size = inode.i_blocks / (fs->blocksize / 1024);
 429         else
 430                 size = inode.i_blocks >> 1;
 431         if (size < 8192)
 432                 printf("%uk\n", size);
 433         else
 434                 printf("%uM\n", size >> 10);
 435         printf(_("Journal length:           %u\n"
 436                  "Journal sequence:         0x%08x\n"
 437                  "Journal start:            %u\n"),
 438                (unsigned int)ntohl(jsb->s_maxlen),
 439                (unsigned int)ntohl(jsb->s_sequence),
 440                (unsigned int)ntohl(jsb->s_start));
 441         if (jsb->s_feature_compat &
 442             ext2fs_cpu_to_be32(JFS_FEATURE_COMPAT_CHECKSUM))
 443                 printf("%s", _("Journal checksum type:    crc32\n"));
 444         if ((jsb->s_feature_incompat &
 445              ext2fs_cpu_to_be32(JFS_FEATURE_INCOMPAT_CSUM_V3)) ||
 446             (jsb->s_feature_incompat &
 447              ext2fs_cpu_to_be32(JFS_FEATURE_INCOMPAT_CSUM_V2)))
 448                 printf(_("Journal checksum type:    %s\n"
 449                          "Journal checksum:         0x%08x\n"),
 450                        journal_checksum_type_str(jsb->s_checksum_type),
 451                        ext2fs_be32_to_cpu(jsb->s_checksum));
 452         if (jsb->s_errno != 0)
 453                 printf(_("Journal errno:            %d\n"),
 454                        (int) ntohl(jsb->s_errno));
 455 }
 456
 457 static void print_journal_information(ext2_filsys fs)
 458 {
 459         errcode_t       retval;
 460         char            buf[1024];
 461         char            str[80];
 462         unsigned int    i, j, printed = 0;
 463         journal_superblock_t    *jsb;
 464         __u32                   *mask_ptr, mask, m;
 465
 466         /* Get the journal superblock */
 467         if ((retval = io_channel_read_blk64(fs->io,
 468                                             fs->super->s_first_data_block + 1,
 469                                             -1024, buf))) {
 470                 com_err(program_name, retval, "%s",
 471                         _("while reading journal superblock"));
 472                 exit(1);
 473         }
 474         jsb = (journal_superblock_t *) buf;
 475         if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
 476             (jsb->s_header.h_blocktype !=
 477              (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
 478                 com_err(program_name, 0, "%s",
 479                         _("Couldn't find journal superblock magic numbers"));
 480                 exit(1);
 481         }
 482
 483         if (jsb->s_feature_compat &
 484             ext2fs_cpu_to_be32(JFS_FEATURE_COMPAT_CHECKSUM))
 485                 printf("%s", _("Journal checksum type:    crc32\n"));
 486         if ((jsb->s_feature_incompat &
 487              ext2fs_cpu_to_be32(JFS_FEATURE_INCOMPAT_CSUM_V3)) ||
 488             (jsb->s_feature_incompat &
 489              ext2fs_cpu_to_be32(JFS_FEATURE_INCOMPAT_CSUM_V2)))
 490                 printf(_("Journal checksum type:    %s\n"
 491                          "Journal checksum:         0x%08x\n"),
 492                        journal_checksum_type_str(jsb->s_checksum_type),
 493                        ext2fs_be32_to_cpu(jsb->s_checksum));
 494
 495         printf("%s", _("Journal features:        "));
 496         for (i = 0, mask_ptr = &jsb->s_feature_compat; i < 3; i++, mask_ptr++) {
 497                 mask = be32_to_cpu(*mask_ptr);
 498                 for (j = 0, m = 1; j < 32; j++, m <<= 1) {
 499                         if (mask & m) {
 500                                 printf(" %s", e2p_jrnl_feature2string(i, m));
 501                                 printed++;
 502                         }
 503                 }
 504         }
 505
 506         printf(_("\nJournal block size:       %u\n"
 507                  "Journal length:           %u\n"
 508                  "Journal first block:      %u\n"
 509                  "Journal sequence:         0x%08x\n"
 510                  "Journal start:            %u\n"
 511                  "Journal number of users:  %u\n"),
 512                (unsigned int)ntohl(jsb->s_blocksize),  (unsigned int)ntohl(jsb->s_maxlen),
 513                (unsigned int)ntohl(jsb->s_first), (unsigned int)ntohl(jsb->s_sequence),
 514                (unsigned int)ntohl(jsb->s_start), (unsigned int)ntohl(jsb->s_nr_users));
 515
 516         for (i=0; i < ntohl(jsb->s_nr_users); i++) {
 517                 uuid_unparse(&jsb->s_users[i*16], str);
 518                 printf(i ? "                          %s\n"
 519                        : _("Journal users:            %s\n"),
 520                        str);
 521         }
 522 }
 523
 524 static void parse_extended_opts(const char *opts, blk64_t *superblock,
 525                                 int *blocksize)
 526 {
 527         char    *buf, *token, *next, *p, *arg, *badopt = 0;
 528         int     len;
 529         int     do_usage = 0;
 530
 531         len = strlen(opts);
 532         buf = malloc(len+1);
 533         if (!buf) {
 534                 fprintf(stderr, "%s",
 535                         _("Couldn't allocate memory to parse options!\n"));
 536                 exit(1);
 537         }
 538         strcpy(buf, opts);
 539         for (token = buf; token && *token; token = next) {
 540                 p = strchr(token, ',');
 541                 next = 0;
 542                 if (p) {
 543                         *p = 0;
 544                         next = p+1;
 545                 }
 546                 arg = strchr(token, '=');
 547                 if (arg) {
 548                         *arg = 0;
 549                         arg++;
 550                 }
 551                 if (strcmp(token, "superblock") == 0 ||
 552                     strcmp(token, "sb") == 0) {
 553                         if (!arg) {
 554                                 do_usage++;
 555                                 badopt = token;
 556                                 continue;
 557                         }
 558                         *superblock = strtoul(arg, &p, 0);
 559                         if (*p) {
 560                                 fprintf(stderr,
 561                                         _("Invalid superblock parameter: %s\n"),
 562                                         arg);
 563                                 do_usage++;
 564                                 continue;
 565                         }
 566                 } else if (strcmp(token, "blocksize") == 0 ||
 567                            strcmp(token, "bs") == 0) {
 568                         if (!arg) {
 569                                 do_usage++;
 570                                 badopt = token;
 571                                 continue;
 572                         }
 573                         *blocksize = strtoul(arg, &p, 0);
 574                         if (*p) {
 575                                 fprintf(stderr,
 576                                         _("Invalid blocksize parameter: %s\n"),
 577                                         arg);
 578                                 do_usage++;
 579                                 continue;
 580                         }
 581                 } else {
 582                         do_usage++;
 583                         badopt = token;
 584                 }
 585         }
 586         if (do_usage) {
 587                 fprintf(stderr, _("\nBad extended option(s) specified: %s\n\n"
 588                         "Extended options are separated by commas, "
 589                         "and may take an argument which\n"
 590                         "\tis set off by an equals ('=') sign.\n\n"
 591                         "Valid extended options are:\n"
 592                         "\tsuperblock=<superblock number>\n"
 593                         "\tblocksize=<blocksize>\n"),
 594                         badopt ? badopt : "");
 595                 free(buf);
 596                 exit(1);
 597         }
 598         free(buf);
 599 }
 600
 601 int main (int argc, char ** argv)
 602 {
 603         errcode_t       retval;
 604         ext2_filsys     fs;
 605         int             print_badblocks = 0;
 606         blk64_t         use_superblock = 0;
 607         int             use_blocksize = 0;
 608         int             image_dump = 0;
 609         int             force = 0;
 610         int             flags;
 611         int             header_only = 0;
 612         int             c;
 613         int             grp_only = 0;
 614
 615 #ifdef ENABLE_NLS
 616         setlocale(LC_MESSAGES, "");
 617         setlocale(LC_CTYPE, "");
 618         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
 619         textdomain(NLS_CAT_NAME);
 620         set_com_err_gettext(gettext);
 621 #endif
 622         add_error_table(&et_ext2_error_table);
 623         fprintf (stderr, "dumpe2fs %s (%s)\n", E2FSPROGS_VERSION,
 624                  E2FSPROGS_DATE);
 625         if (argc && *argv)
 626                 program_name = *argv;
 627
 628         while ((c = getopt(argc, argv, "bfghixVo:")) != EOF) {
 629                 switch (c) {
 630                 case 'b':
 631                         print_badblocks++;
 632                         break;
 633                 case 'f':
 634                         force++;
 635                         break;
 636                 case 'g':
 637                         grp_only++;
 638                         break;
 639                 case 'h':
 640                         header_only++;
 641                         break;
 642                 case 'i':
 643                         image_dump++;
 644                         break;
 645                 case 'o':
 646                         parse_extended_opts(optarg, &use_superblock,
 647                                             &use_blocksize);
 648                         break;
 649                 case 'V':
 650                         /* Print version number and exit */
 651                         fprintf(stderr, _("\tUsing %s\n"),
 652                                 error_message(EXT2_ET_BASE));
 653                         exit(0);
 654                 case 'x':
 655                         hex_format++;
 656                         break;
 657                 default:
 658                         usage();
 659                 }
 660         }
 661         if (optind != argc - 1) {
 662                 usage();
 663                 exit(1);
 664         }
 665         device_name = argv[optind++];
 666         flags = EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
 667         if (force)
 668                 flags |= EXT2_FLAG_FORCE;
 669         if (image_dump)
 670                 flags |= EXT2_FLAG_IMAGE_FILE;
 671 try_open_again:
 672         if (use_superblock && !use_blocksize) {
 673                 for (use_blocksize = EXT2_MIN_BLOCK_SIZE;
 674                      use_blocksize <= EXT2_MAX_BLOCK_SIZE;
 675                      use_blocksize *= 2) {
 676                         retval = ext2fs_open (device_name, flags,
 677                                               use_superblock,
 678                                               use_blocksize, unix_io_manager,
 679                                               &fs);
 680                         if (!retval)
 681                                 break;
 682                 }
 683         } else
 684                 retval = ext2fs_open (device_name, flags, use_superblock,
 685                                       use_blocksize, unix_io_manager, &fs);
 686         if (retval && !(flags & EXT2_FLAG_IGNORE_CSUM_ERRORS)) {
 687                 flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 688                 goto try_open_again;
 689         }
 690         if (!retval && (fs->flags & EXT2_FLAG_IGNORE_CSUM_ERRORS))
 691                 printf("%s", _("\n*** Checksum errors detected in filesystem!  Run e2fsck now!\n\n"));
 692         flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 693         if (retval) {
 694                 com_err (program_name, retval, _("while trying to open %s"),
 695                          device_name);
 696                 printf("%s", _("Couldn't find valid filesystem superblock.\n"));
 697                 if (retval == EXT2_ET_BAD_MAGIC)
 698                         check_plausibility(device_name, CHECK_FS_EXIST, NULL);
 699                 exit (1);
 700         }
 701         fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
 702         if (fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT)
 703                 blocks64 = 1;
 704         if (print_badblocks) {
 705                 list_bad_blocks(fs, 1);
 706         } else {
 707                 if (grp_only)
 708                         goto just_descriptors;
 709                 list_super (fs->super);
 710                 if (fs->super->s_feature_incompat &
 711                       EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
 712                         print_journal_information(fs);
 713                         ext2fs_close_free(&fs);
 714                         exit(0);
 715                 }
 716                 if ((fs->super->s_feature_compat &
 717                      EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
 718                     (fs->super->s_journal_inum != 0))
 719                         print_inline_journal_information(fs);
 720                 list_bad_blocks(fs, 0);
 721                 if (header_only) {
 722                         ext2fs_close_free(&fs);
 723                         exit (0);
 724                 }
 725                 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
 726 try_bitmaps_again:
 727                 retval = ext2fs_read_bitmaps (fs);
 728                 if (retval && !(fs->flags & EXT2_FLAG_IGNORE_CSUM_ERRORS)) {
 729                         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 730                         goto try_bitmaps_again;
 731                 }
 732                 if (!retval && (fs->flags & EXT2_FLAG_IGNORE_CSUM_ERRORS))
 733                         printf("%s", _("\n*** Checksum errors detected in bitmaps!  Run e2fsck now!\n\n"));
 734 just_descriptors:
 735                 list_desc(fs, grp_only);
 736                 if (retval) {
 737                         printf(_("\n%s: %s: error reading bitmaps: %s\n"),
 738                                program_name, device_name,
 739                                error_message(retval));
 740                 }
 741         }
 742         ext2fs_close_free(&fs);
 743         remove_error_table(&et_ext2_error_table);
 744         exit (0);
 745 }