2 * dumpe2fs.c - List the control structures of a second
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)
9 * Copyright 1995, 1996, 1997 by Theodore Ts'o.
12 * This file may be redistributed under the terms of the GNU Public
20 * 94/02/27 - Ported to use the ext2fs library
36 #include "ext2fs/ext2_fs.h"
38 #include "ext2fs/ext2fs.h"
40 #include "ext2fs/kernel-jbd.h"
41 #include <uuid/uuid.h>
43 #include "support/nls-enable.h"
44 #include "support/plausible.h"
45 #include "../version.h"
47 #define in_use(m, x) (ext2fs_test_bit ((x), (m)))
49 static const char * program_name = "dumpe2fs";
50 static char * device_name = NULL;
51 static int hex_format = 0;
52 static int blocks64 = 0;
54 static void usage(void)
56 fprintf(stderr, _("Usage: %s [-bfghixV] [-o superblock=<num>] "
57 "[-o blocksize=<num>] device\n"), program_name);
61 static void print_number(unsigned long long num)
65 printf("0x%08llx", num);
67 printf("0x%04llx", num);
72 static void print_range(unsigned long long a, unsigned long long b)
76 printf("0x%08llx-0x%08llx", a, b);
78 printf("0x%04llx-0x%04llx", a, b);
80 printf("%llu-%llu", a, b);
83 static void print_free(unsigned long group, char * bitmap,
84 unsigned long num, unsigned long offset, int ratio)
91 offset += group * num;
92 for (i = 0; i < num; i++)
93 if (!in_use (bitmap, i))
97 print_number((i + offset) * ratio);
98 for (j = i; j < num && !in_use (bitmap, j); j++)
102 print_number((j + offset) * ratio);
109 static void print_bg_opt(int bg_flags, int mask,
110 const char *str, int *first)
112 if (bg_flags & mask) {
121 static void print_bg_opts(ext2_filsys fs, dgrp_t i)
123 int first = 1, bg_flags = 0;
125 if (ext2fs_has_group_desc_csum(fs))
126 bg_flags = ext2fs_bg_flags(fs, i);
128 print_bg_opt(bg_flags, EXT2_BG_INODE_UNINIT, "INODE_UNINIT",
130 print_bg_opt(bg_flags, EXT2_BG_BLOCK_UNINIT, "BLOCK_UNINIT",
132 print_bg_opt(bg_flags, EXT2_BG_INODE_ZEROED, "ITABLE_ZEROED",
139 static void print_bg_rel_offset(ext2_filsys fs, blk64_t block, int itable,
140 blk64_t first_block, blk64_t last_block)
142 if ((block >= first_block) && (block <= last_block)) {
143 if (itable && block == first_block)
145 printf(" (+%u)", (unsigned)(block - first_block));
146 } else if (ext2fs_has_feature_flex_bg(fs->super)) {
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)));
153 static void list_desc(ext2_filsys fs, int grp_only)
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;
163 blk64_t blk_itr = EXT2FS_B2C(fs, fs->super->s_first_data_block);
164 ext2_ino_t ino_itr = 1;
167 if (ext2fs_has_feature_bigalloc(fs->super))
168 units = _("clusters");
170 block_nbytes = EXT2_CLUSTERS_PER_GROUP(fs->super) / 8;
171 inode_nbytes = EXT2_INODES_PER_GROUP(fs->super) / 8;
174 block_bitmap = malloc(block_nbytes);
176 inode_bitmap = malloc(inode_nbytes);
178 inode_blocks_per_group = ((fs->super->s_inodes_per_group *
179 EXT2_INODE_SIZE(fs->super)) +
180 EXT2_BLOCK_SIZE(fs->super) - 1) /
181 EXT2_BLOCK_SIZE(fs->super);
182 reserved_gdt = fs->super->s_reserved_gdt_blocks;
184 first_block = fs->super->s_first_data_block;
185 if (ext2fs_has_feature_meta_bg(fs->super))
186 old_desc_blocks = fs->super->s_first_meta_bg;
188 old_desc_blocks = fs->desc_blocks;
190 printf("group:block:super:gdt:bbitmap:ibitmap:itable\n");
191 for (i = 0; i < fs->group_desc_count; i++) {
192 first_block = ext2fs_group_first_block2(fs, i);
193 last_block = ext2fs_group_last_block2(fs, i);
195 ext2fs_super_and_bgd_loc2(fs, i, &super_blk,
196 &old_desc_blk, &new_desc_blk, 0);
199 printf("%lu:%llu:", i, first_block);
200 if (i == 0 || super_blk)
201 printf("%llu:", super_blk);
205 print_range(old_desc_blk,
206 old_desc_blk + old_desc_blocks - 1);
208 } else if (new_desc_blk)
209 printf("%llu:", new_desc_blk);
212 printf("%llu:%llu:%llu\n",
213 ext2fs_block_bitmap_loc(fs, i),
214 ext2fs_inode_bitmap_loc(fs, i),
215 ext2fs_inode_table_loc(fs, i));
219 printf(_("Group %lu: (Blocks "), i);
220 print_range(first_block, last_block);
222 if (ext2fs_has_group_desc_csum(fs)) {
223 unsigned csum = ext2fs_bg_checksum(fs, i);
224 unsigned exp_csum = ext2fs_group_desc_csum(fs, i);
226 printf(_(" csum 0x%04x"), csum);
227 if (csum != exp_csum)
228 printf(_(" (EXPECTED 0x%04x)"), exp_csum);
230 print_bg_opts(fs, i);
231 has_super = ((i==0) || super_blk);
233 printf (_(" %s superblock at "),
234 i == 0 ? _("Primary") : _("Backup"));
235 print_number(super_blk);
238 printf("%s", _(", Group descriptors at "));
239 print_range(old_desc_blk,
240 old_desc_blk + old_desc_blocks - 1);
242 printf("%s", _("\n Reserved GDT blocks at "));
243 print_range(old_desc_blk + old_desc_blocks,
244 old_desc_blk + old_desc_blocks +
247 } else if (new_desc_blk) {
248 fputc(has_super ? ',' : ' ', stdout);
249 printf("%s", _(" Group descriptor at "));
250 print_number(new_desc_blk);
255 fputs(_(" Block bitmap at "), stdout);
256 print_number(ext2fs_block_bitmap_loc(fs, i));
257 print_bg_rel_offset(fs, ext2fs_block_bitmap_loc(fs, i), 0,
258 first_block, last_block);
259 if (ext2fs_has_feature_metadata_csum(fs->super))
260 printf(_(", csum 0x%08x"),
261 ext2fs_block_bitmap_checksum(fs, i));
262 if (getenv("DUMPE2FS_IGNORE_80COL"))
263 fputs(_(","), stdout);
265 fputs(_("\n "), stdout);
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 (ext2fs_has_feature_metadata_csum(fs->super))
271 printf(_(", csum 0x%08x"),
272 ext2fs_inode_bitmap_checksum(fs, i));
273 fputs(_("\n Inode table at "), stdout);
274 print_range(ext2fs_inode_table_loc(fs, i),
275 ext2fs_inode_table_loc(fs, i) +
276 inode_blocks_per_group - 1);
277 print_bg_rel_offset(fs, ext2fs_inode_table_loc(fs, i), 1,
278 first_block, last_block);
279 printf (_("\n %u free %s, %u free inodes, "
281 ext2fs_bg_free_blocks_count(fs, i), units,
282 ext2fs_bg_free_inodes_count(fs, i),
283 ext2fs_bg_used_dirs_count(fs, i),
284 ext2fs_bg_itable_unused(fs, i) ? "" : "\n");
285 if (ext2fs_bg_itable_unused(fs, i))
286 printf (_(", %u unused inodes\n"),
287 ext2fs_bg_itable_unused(fs, i));
289 fputs(_(" Free blocks: "), stdout);
290 retval = ext2fs_get_block_bitmap_range2(fs->block_map,
291 blk_itr, block_nbytes << 3, block_bitmap);
293 com_err("list_desc", retval,
294 "while reading block bitmap");
296 print_free(i, block_bitmap,
297 fs->super->s_clusters_per_group,
298 fs->super->s_first_data_block,
299 EXT2FS_CLUSTER_RATIO(fs));
301 blk_itr += fs->super->s_clusters_per_group;
304 fputs(_(" Free inodes: "), stdout);
305 retval = ext2fs_get_inode_bitmap_range2(fs->inode_map,
306 ino_itr, inode_nbytes << 3, inode_bitmap);
308 com_err("list_desc", retval,
309 "while reading inode bitmap");
311 print_free(i, inode_bitmap,
312 fs->super->s_inodes_per_group,
315 ino_itr += fs->super->s_inodes_per_group;
324 static void list_bad_blocks(ext2_filsys fs, int dump)
326 badblocks_list bb_list = 0;
327 badblocks_iterate bb_iter;
330 const char *header, *fmt;
332 retval = ext2fs_read_bb_inode(fs, &bb_list);
334 com_err("ext2fs_read_bb_inode", retval, 0);
337 retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
339 com_err("ext2fs_badblocks_list_iterate_begin", retval,
340 "%s", _("while printing bad block list"));
344 header = fmt = "%u\n";
346 header = _("Bad blocks: %u");
349 while (ext2fs_badblocks_list_iterate(bb_iter, &blk)) {
350 printf(header ? header : fmt, blk);
353 ext2fs_badblocks_list_iterate_end(bb_iter);
356 ext2fs_badblocks_list_free(bb_list);
359 static const char *journal_checksum_type_str(__u8 type)
362 case JBD2_CRC32C_CHKSUM:
369 static void print_inline_journal_information(ext2_filsys fs)
371 journal_superblock_t *jsb;
372 struct ext2_inode inode;
373 ext2_file_t journal_file;
375 ino_t ino = fs->super->s_journal_inum;
377 __u32 *mask_ptr, mask, m;
378 int i, j, size, printed = 0;
380 if (fs->flags & EXT2_FLAG_IMAGE_FILE)
382 retval = ext2fs_read_inode(fs, ino, &inode);
384 com_err(program_name, retval, "%s",
385 _("while reading journal inode"));
388 retval = ext2fs_file_open2(fs, ino, &inode, 0, &journal_file);
390 com_err(program_name, retval, "%s",
391 _("while opening journal inode"));
394 retval = ext2fs_file_read(journal_file, buf, sizeof(buf), 0);
396 com_err(program_name, retval, "%s",
397 _("while reading journal super block"));
400 ext2fs_file_close(journal_file);
401 jsb = (journal_superblock_t *) buf;
402 if (be32_to_cpu(jsb->s_header.h_magic) != JFS_MAGIC_NUMBER) {
403 fprintf(stderr, "%s",
404 _("Journal superblock magic number invalid!\n"));
407 printf("%s", _("Journal features: "));
408 for (i=0, mask_ptr=&jsb->s_feature_compat; i <3; i++,mask_ptr++) {
409 mask = be32_to_cpu(*mask_ptr);
410 for (j=0,m=1; j < 32; j++, m<<=1) {
412 printf(" %s", e2p_jrnl_feature2string(i, m));
420 fputs(_("Journal size: "), stdout);
421 if (ext2fs_has_feature_huge_file(fs->super) &&
422 (inode.i_flags & EXT4_HUGE_FILE_FL))
423 size = inode.i_blocks / (fs->blocksize / 1024);
425 size = inode.i_blocks >> 1;
427 printf("%uk\n", size);
429 printf("%uM\n", size >> 10);
430 printf(_("Journal length: %u\n"
431 "Journal sequence: 0x%08x\n"
432 "Journal start: %u\n"),
433 (unsigned int)ntohl(jsb->s_maxlen),
434 (unsigned int)ntohl(jsb->s_sequence),
435 (unsigned int)ntohl(jsb->s_start));
436 if (jsb->s_feature_compat &
437 ext2fs_cpu_to_be32(JFS_FEATURE_COMPAT_CHECKSUM))
438 printf("%s", _("Journal checksum type: crc32\n"));
439 if ((jsb->s_feature_incompat &
440 ext2fs_cpu_to_be32(JFS_FEATURE_INCOMPAT_CSUM_V3)) ||
441 (jsb->s_feature_incompat &
442 ext2fs_cpu_to_be32(JFS_FEATURE_INCOMPAT_CSUM_V2)))
443 printf(_("Journal checksum type: %s\n"
444 "Journal checksum: 0x%08x\n"),
445 journal_checksum_type_str(jsb->s_checksum_type),
446 ext2fs_be32_to_cpu(jsb->s_checksum));
447 if (jsb->s_errno != 0)
448 printf(_("Journal errno: %d\n"),
449 (int) ntohl(jsb->s_errno));
452 static void print_journal_information(ext2_filsys fs)
457 unsigned int i, j, printed = 0;
458 journal_superblock_t *jsb;
459 __u32 *mask_ptr, mask, m;
461 /* Get the journal superblock */
462 if ((retval = io_channel_read_blk64(fs->io,
463 fs->super->s_first_data_block + 1,
465 com_err(program_name, retval, "%s",
466 _("while reading journal superblock"));
469 jsb = (journal_superblock_t *) buf;
470 if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
471 (jsb->s_header.h_blocktype !=
472 (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
473 com_err(program_name, 0, "%s",
474 _("Couldn't find journal superblock magic numbers"));
478 if (jsb->s_feature_compat &
479 ext2fs_cpu_to_be32(JFS_FEATURE_COMPAT_CHECKSUM))
480 printf("%s", _("Journal checksum type: crc32\n"));
481 if ((jsb->s_feature_incompat &
482 ext2fs_cpu_to_be32(JFS_FEATURE_INCOMPAT_CSUM_V3)) ||
483 (jsb->s_feature_incompat &
484 ext2fs_cpu_to_be32(JFS_FEATURE_INCOMPAT_CSUM_V2)))
485 printf(_("Journal checksum type: %s\n"
486 "Journal checksum: 0x%08x\n"),
487 journal_checksum_type_str(jsb->s_checksum_type),
488 ext2fs_be32_to_cpu(jsb->s_checksum));
490 printf("%s", _("Journal features: "));
491 for (i = 0, mask_ptr = &jsb->s_feature_compat; i < 3; i++, mask_ptr++) {
492 mask = be32_to_cpu(*mask_ptr);
493 for (j = 0, m = 1; j < 32; j++, m <<= 1) {
495 printf(" %s", e2p_jrnl_feature2string(i, m));
501 printf(_("\nJournal block size: %u\n"
502 "Journal length: %u\n"
503 "Journal first block: %u\n"
504 "Journal sequence: 0x%08x\n"
505 "Journal start: %u\n"
506 "Journal number of users: %u\n"),
507 (unsigned int)ntohl(jsb->s_blocksize), (unsigned int)ntohl(jsb->s_maxlen),
508 (unsigned int)ntohl(jsb->s_first), (unsigned int)ntohl(jsb->s_sequence),
509 (unsigned int)ntohl(jsb->s_start), (unsigned int)ntohl(jsb->s_nr_users));
511 for (i=0; i < ntohl(jsb->s_nr_users); i++) {
512 uuid_unparse(&jsb->s_users[i*16], str);
514 : _("Journal users: %s\n"),
519 static void parse_extended_opts(const char *opts, blk64_t *superblock,
522 char *buf, *token, *next, *p, *arg, *badopt = 0;
529 fprintf(stderr, "%s",
530 _("Couldn't allocate memory to parse options!\n"));
534 for (token = buf; token && *token; token = next) {
535 p = strchr(token, ',');
541 arg = strchr(token, '=');
546 if (strcmp(token, "superblock") == 0 ||
547 strcmp(token, "sb") == 0) {
553 *superblock = strtoul(arg, &p, 0);
556 _("Invalid superblock parameter: %s\n"),
561 } else if (strcmp(token, "blocksize") == 0 ||
562 strcmp(token, "bs") == 0) {
568 *blocksize = strtoul(arg, &p, 0);
571 _("Invalid blocksize parameter: %s\n"),
582 fprintf(stderr, _("\nBad extended option(s) specified: %s\n\n"
583 "Extended options are separated by commas, "
584 "and may take an argument which\n"
585 "\tis set off by an equals ('=') sign.\n\n"
586 "Valid extended options are:\n"
587 "\tsuperblock=<superblock number>\n"
588 "\tblocksize=<blocksize>\n"),
589 badopt ? badopt : "");
596 int main (int argc, char ** argv)
600 int print_badblocks = 0;
601 blk64_t use_superblock = 0;
602 int use_blocksize = 0;
611 setlocale(LC_MESSAGES, "");
612 setlocale(LC_CTYPE, "");
613 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
614 textdomain(NLS_CAT_NAME);
615 set_com_err_gettext(gettext);
617 add_error_table(&et_ext2_error_table);
618 fprintf (stderr, "dumpe2fs %s (%s)\n", E2FSPROGS_VERSION,
621 program_name = *argv;
623 while ((c = getopt(argc, argv, "bfghixVo:")) != EOF) {
641 parse_extended_opts(optarg, &use_superblock,
645 /* Print version number and exit */
646 fprintf(stderr, _("\tUsing %s\n"),
647 error_message(EXT2_ET_BASE));
656 if (optind != argc - 1) {
660 device_name = argv[optind++];
661 flags = EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
663 flags |= EXT2_FLAG_FORCE;
665 flags |= EXT2_FLAG_IMAGE_FILE;
667 if (use_superblock && !use_blocksize) {
668 for (use_blocksize = EXT2_MIN_BLOCK_SIZE;
669 use_blocksize <= EXT2_MAX_BLOCK_SIZE;
670 use_blocksize *= 2) {
671 retval = ext2fs_open (device_name, flags,
673 use_blocksize, unix_io_manager,
679 retval = ext2fs_open (device_name, flags, use_superblock,
680 use_blocksize, unix_io_manager, &fs);
681 if (retval && !(flags & EXT2_FLAG_IGNORE_CSUM_ERRORS)) {
682 flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
685 if (!retval && (fs->flags & EXT2_FLAG_IGNORE_CSUM_ERRORS))
686 printf("%s", _("\n*** Checksum errors detected in filesystem! Run e2fsck now!\n\n"));
687 flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
689 com_err (program_name, retval, _("while trying to open %s"),
691 printf("%s", _("Couldn't find valid filesystem superblock.\n"));
692 if (retval == EXT2_ET_BAD_MAGIC)
693 check_plausibility(device_name, CHECK_FS_EXIST, NULL);
696 fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
697 if (ext2fs_has_feature_64bit(fs->super))
699 if (print_badblocks) {
700 list_bad_blocks(fs, 1);
703 goto just_descriptors;
704 list_super (fs->super);
705 if (ext2fs_has_feature_journal_dev(fs->super)) {
706 print_journal_information(fs);
707 ext2fs_close_free(&fs);
710 if (ext2fs_has_feature_journal(fs->super) &&
711 (fs->super->s_journal_inum != 0))
712 print_inline_journal_information(fs);
713 list_bad_blocks(fs, 0);
715 ext2fs_close_free(&fs);
718 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
720 retval = ext2fs_read_bitmaps (fs);
721 if (retval && !(fs->flags & EXT2_FLAG_IGNORE_CSUM_ERRORS)) {
722 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
723 goto try_bitmaps_again;
725 if (!retval && (fs->flags & EXT2_FLAG_IGNORE_CSUM_ERRORS))
726 printf("%s", _("\n*** Checksum errors detected in bitmaps! Run e2fsck now!\n\n"));
728 list_desc(fs, grp_only);
730 printf(_("\n%s: %s: error reading bitmaps: %s\n"),
731 program_name, device_name,
732 error_message(retval));
735 ext2fs_close_free(&fs);
736 remove_error_table(&et_ext2_error_table);