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
35 #include "ext2fs/ext2_fs.h"
37 #include "ext2fs/ext2fs.h"
40 #include <uuid/uuid.h>
42 #include "../version.h"
43 #include "nls-enable.h"
45 #define in_use(m, x) (ext2fs_test_bit ((x), (m)))
47 const char * program_name = "dumpe2fs";
48 char * device_name = NULL;
51 static void usage(void)
53 fprintf (stderr, _("Usage: %s [-bfhixV] [-ob superblock] "
54 "[-oB blocksize] device\n"), program_name);
58 static void print_number(unsigned long num)
61 printf("0x%04lx", num);
66 static void print_range(unsigned long a, unsigned long b)
69 printf("0x%04lx-0x%04lx", a, b);
71 printf("%lu-%lu", a, b);
74 static void print_free (unsigned long group, char * bitmap,
75 unsigned long nbytes, unsigned long offset)
81 offset += group * nbytes;
82 for (i = 0; i < nbytes; i++)
83 if (!in_use (bitmap, i))
87 print_number(i + offset);
88 for (j = i; j < nbytes && !in_use (bitmap, j); j++)
92 print_number(j + offset);
99 static void print_bg_opt(int bg_flags, int mask,
100 const char *str, int *first)
102 if (bg_flags & mask) {
111 static void print_bg_opts(ext2_filsys fs, dgrp_t i)
113 int first = 1, bg_flags = 0;
115 if (fs->super->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
116 bg_flags = fs->group_desc[i].bg_flags;
118 print_bg_opt(bg_flags, EXT2_BG_INODE_UNINIT, "INODE_UNINIT",
120 print_bg_opt(bg_flags, EXT2_BG_BLOCK_UNINIT, "BLOCK_UNINIT",
122 print_bg_opt(bg_flags, EXT2_BG_INODE_ZEROED, "ITABLE_ZEROED",
129 static void list_desc (ext2_filsys fs)
133 blk_t first_block, last_block;
134 blk_t super_blk, old_desc_blk, new_desc_blk;
135 char *block_bitmap=NULL, *inode_bitmap=NULL;
136 int inode_blocks_per_group, old_desc_blocks, reserved_gdt;
137 int block_nbytes, inode_nbytes;
139 blk_t blk_itr = fs->super->s_first_data_block;
140 ext2_ino_t ino_itr = 1;
142 block_nbytes = EXT2_BLOCKS_PER_GROUP(fs->super) / 8;
143 inode_nbytes = EXT2_INODES_PER_GROUP(fs->super) / 8;
146 block_bitmap = malloc(block_nbytes);
148 inode_bitmap = malloc(inode_nbytes);
150 inode_blocks_per_group = ((fs->super->s_inodes_per_group *
151 EXT2_INODE_SIZE(fs->super)) +
152 EXT2_BLOCK_SIZE(fs->super) - 1) /
153 EXT2_BLOCK_SIZE(fs->super);
154 reserved_gdt = fs->super->s_reserved_gdt_blocks;
156 first_block = fs->super->s_first_data_block;
157 if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
158 old_desc_blocks = fs->super->s_first_meta_bg;
160 old_desc_blocks = fs->desc_blocks;
161 for (i = 0; i < fs->group_desc_count; i++) {
162 first_block = ext2fs_group_first_block(fs, i);
163 last_block = ext2fs_group_last_block(fs, i);
165 ext2fs_super_and_bgd_loc(fs, i, &super_blk,
166 &old_desc_blk, &new_desc_blk, 0);
168 printf (_("Group %lu: (Blocks "), i);
169 print_range(first_block, last_block);
171 print_bg_opts(fs, i);
172 if (fs->super->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
173 printf(_(" Checksum 0x%04x, unused inodes %d\n"),
174 fs->group_desc[i].bg_checksum,
175 fs->group_desc[i].bg_itable_unused);
176 has_super = ((i==0) || super_blk);
178 printf (_(" %s superblock at "),
179 i == 0 ? _("Primary") : _("Backup"));
180 print_number(super_blk);
183 printf(_(", Group descriptors at "));
184 print_range(old_desc_blk,
185 old_desc_blk + old_desc_blocks - 1);
187 printf(_("\n Reserved GDT blocks at "));
188 print_range(old_desc_blk + old_desc_blocks,
189 old_desc_blk + old_desc_blocks +
192 } else if (new_desc_blk) {
193 fputc(has_super ? ',' : ' ', stdout);
194 printf(_(" Group descriptor at "));
195 print_number(new_desc_blk);
200 fputs(_(" Block bitmap at "), stdout);
201 print_number(fs->group_desc[i].bg_block_bitmap);
202 diff = fs->group_desc[i].bg_block_bitmap - first_block;
204 printf(" (+%ld)", diff);
205 fputs(_(", Inode bitmap at "), stdout);
206 print_number(fs->group_desc[i].bg_inode_bitmap);
207 diff = fs->group_desc[i].bg_inode_bitmap - first_block;
209 printf(" (+%ld)", diff);
210 fputs(_("\n Inode table at "), stdout);
211 print_range(fs->group_desc[i].bg_inode_table,
212 fs->group_desc[i].bg_inode_table +
213 inode_blocks_per_group - 1);
214 diff = fs->group_desc[i].bg_inode_table - first_block;
216 printf(" (+%ld)", diff);
217 printf (_("\n %u free blocks, %u free inodes, "
219 fs->group_desc[i].bg_free_blocks_count,
220 fs->group_desc[i].bg_free_inodes_count,
221 fs->group_desc[i].bg_used_dirs_count,
222 fs->group_desc[i].bg_itable_unused ? "" : "\n");
223 if (fs->group_desc[i].bg_itable_unused)
224 printf (_(", %u unused inodes\n"),
225 fs->group_desc[i].bg_itable_unused);
227 fputs(_(" Free blocks: "), stdout);
228 ext2fs_get_block_bitmap_range(fs->block_map,
229 blk_itr, block_nbytes << 3, block_bitmap);
230 print_free (i, block_bitmap,
231 fs->super->s_blocks_per_group,
232 fs->super->s_first_data_block);
234 blk_itr += fs->super->s_blocks_per_group;
237 fputs(_(" Free inodes: "), stdout);
238 ext2fs_get_inode_bitmap_range(fs->inode_map,
239 ino_itr, inode_nbytes << 3, inode_bitmap);
240 print_free (i, inode_bitmap,
241 fs->super->s_inodes_per_group, 1);
243 ino_itr += fs->super->s_inodes_per_group;
248 static void list_bad_blocks(ext2_filsys fs, int dump)
250 badblocks_list bb_list = 0;
251 badblocks_iterate bb_iter;
254 const char *header, *fmt;
256 retval = ext2fs_read_bb_inode(fs, &bb_list);
258 com_err("ext2fs_read_bb_inode", retval, 0);
261 retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
263 com_err("ext2fs_badblocks_list_iterate_begin", retval,
264 _("while printing bad block list"));
268 header = fmt = "%u\n";
270 header = _("Bad blocks: %u");
273 while (ext2fs_badblocks_list_iterate(bb_iter, &blk)) {
274 printf(header ? header : fmt, blk);
277 ext2fs_badblocks_list_iterate_end(bb_iter);
282 static void print_inline_journal_information(ext2_filsys fs)
284 struct ext2_inode inode;
286 ino_t ino = fs->super->s_journal_inum;
289 retval = ext2fs_read_inode(fs, ino, &inode);
291 com_err(program_name, retval,
292 _("while reading journal inode"));
295 fputs(_("Journal size: "), stdout);
296 if ((fs->super->s_feature_ro_compat &
297 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) &&
298 (inode.i_flags & EXT4_HUGE_FILE_FL))
299 size = inode.i_blocks / (fs->blocksize / 1024);
301 size = inode.i_blocks >> 1;
303 printf("%uk\n", size);
305 printf("%uM\n", size >> 10);
308 static void print_journal_information(ext2_filsys fs)
314 journal_superblock_t *jsb;
316 /* Get the journal superblock */
317 if ((retval = io_channel_read_blk(fs->io, fs->super->s_first_data_block+1, -1024, buf))) {
318 com_err(program_name, retval,
319 _("while reading journal superblock"));
322 jsb = (journal_superblock_t *) buf;
323 if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
324 (jsb->s_header.h_blocktype !=
325 (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
326 com_err(program_name, 0,
327 _("Couldn't find journal superblock magic numbers"));
331 printf(_("\nJournal block size: %u\n"
332 "Journal length: %u\n"
333 "Journal first block: %u\n"
334 "Journal sequence: 0x%08x\n"
335 "Journal start: %u\n"
336 "Journal number of users: %u\n"),
337 (unsigned int)ntohl(jsb->s_blocksize), (unsigned int)ntohl(jsb->s_maxlen),
338 (unsigned int)ntohl(jsb->s_first), (unsigned int)ntohl(jsb->s_sequence),
339 (unsigned int)ntohl(jsb->s_start), (unsigned int)ntohl(jsb->s_nr_users));
341 for (i=0; i < ntohl(jsb->s_nr_users); i++) {
342 uuid_unparse(&jsb->s_users[i*16], str);
344 : _("Journal users: %s\n"),
349 static void parse_extended_opts(const char *opts, blk_t *superblock,
352 char *buf, *token, *next, *p, *arg, *badopt = 0;
360 _("Couldn't allocate memory to parse options!\n"));
364 for (token = buf; token && *token; token = next) {
365 p = strchr(token, ',');
371 arg = strchr(token, '=');
376 if (strcmp(token, "superblock") == 0 ||
377 strcmp(token, "sb") == 0) {
383 *superblock = strtoul(arg, &p, 0);
386 _("Invalid superblock parameter: %s\n"),
391 } else if (strcmp(token, "blocksize") == 0 ||
392 strcmp(token, "bs") == 0) {
398 *blocksize = strtoul(arg, &p, 0);
401 _("Invalid blocksize parameter: %s\n"),
412 fprintf(stderr, _("\nBad extended option(s) specified: %s\n\n"
413 "Extended options are separated by commas, "
414 "and may take an argument which\n"
415 "\tis set off by an equals ('=') sign.\n\n"
416 "Valid extended options are:\n"
417 "\tsuperblock=<superblock number>\n"
418 "\tblocksize=<blocksize>\n"),
419 badopt ? badopt : "");
426 int main (int argc, char ** argv)
430 int print_badblocks = 0;
431 blk_t use_superblock = 0;
432 int use_blocksize = 0;
440 setlocale(LC_MESSAGES, "");
441 setlocale(LC_CTYPE, "");
442 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
443 textdomain(NLS_CAT_NAME);
445 add_error_table(&et_ext2_error_table);
446 fprintf (stderr, "dumpe2fs %s (%s)\n", E2FSPROGS_VERSION,
449 program_name = *argv;
451 while ((c = getopt (argc, argv, "bfhixVo:")) != EOF) {
466 parse_extended_opts(optarg, &use_superblock,
470 /* Print version number and exit */
471 fprintf(stderr, _("\tUsing %s\n"),
472 error_message(EXT2_ET_BASE));
481 if (optind > argc - 1)
483 device_name = argv[optind++];
484 flags = EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_SOFTSUPP_FEATURES;
486 flags |= EXT2_FLAG_FORCE;
488 flags |= EXT2_FLAG_IMAGE_FILE;
490 if (use_superblock && !use_blocksize) {
491 for (use_blocksize = EXT2_MIN_BLOCK_SIZE;
492 use_blocksize <= EXT2_MAX_BLOCK_SIZE;
493 use_blocksize *= 2) {
494 retval = ext2fs_open (device_name, flags,
496 use_blocksize, unix_io_manager,
502 retval = ext2fs_open (device_name, flags, use_superblock,
503 use_blocksize, unix_io_manager, &fs);
505 com_err (program_name, retval, _("while trying to open %s"),
507 printf (_("Couldn't find valid filesystem superblock.\n"));
510 if (print_badblocks) {
511 list_bad_blocks(fs, 1);
513 list_super (fs->super);
514 if (fs->super->s_feature_incompat &
515 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
516 print_journal_information(fs);
520 if ((fs->super->s_feature_compat &
521 EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
522 (fs->super->s_journal_inum != 0))
523 print_inline_journal_information(fs);
524 list_bad_blocks(fs, 0);
529 retval = ext2fs_read_bitmaps (fs);
532 printf(_("\n%s: %s: error reading bitmaps: %s\n"),
533 program_name, device_name,
534 error_message(retval));
538 remove_error_table(&et_ext2_error_table);