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"
41 #include "../version.h"
42 #include "nls-enable.h"
44 #define in_use(m, x) (ext2fs_test_bit ((x), (m)))
46 const char * program_name = "dumpe2fs";
47 char * device_name = NULL;
50 static void usage(void)
52 fprintf (stderr, _("Usage: %s [-bfhixV] [-ob superblock] "
53 "[-oB blocksize] device\n"), program_name);
57 static void print_free (unsigned long group, char * bitmap,
58 unsigned long nbytes, unsigned long offset)
64 for (i = 0; i < nbytes; i++)
65 if (!in_use (bitmap, i))
69 if (i == nbytes - 1 || in_use (bitmap, i + 1))
70 printf (opt_hex ? "0x%04x" : "%lu",
71 group * nbytes + i + offset);
74 for (j = i; j < nbytes && !in_use (bitmap, j);
77 printf (opt_hex ? "0x%04lx-0x%04lx" :
78 "%lu-%lu", group * nbytes + i + offset,
79 group * nbytes + (j - 1) + offset);
86 static void list_desc (ext2_filsys fs)
89 blk_t group_blk, next_blk;
90 char * block_bitmap = fs->block_map->bitmap;
91 char * inode_bitmap = fs->inode_map->bitmap;
92 int inode_blocks_per_group;
93 int group_desc_blocks;
95 inode_blocks_per_group = ((fs->super->s_inodes_per_group *
96 EXT2_INODE_SIZE(fs->super)) +
97 EXT2_BLOCK_SIZE(fs->super) - 1) /
98 EXT2_BLOCK_SIZE(fs->super);
99 group_desc_blocks = ((fs->super->s_blocks_count -
100 fs->super->s_first_data_block +
101 EXT2_BLOCKS_PER_GROUP(fs->super) - 1) /
102 EXT2_BLOCKS_PER_GROUP(fs->super) +
103 EXT2_DESC_PER_BLOCK(fs->super) - 1) /
104 EXT2_DESC_PER_BLOCK(fs->super);
107 group_blk = fs->super->s_first_data_block;
108 for (i = 0; i < fs->group_desc_count; i++) {
109 next_blk = group_blk + fs->super->s_blocks_per_group;
110 if (next_blk > fs->super->s_blocks_count)
111 next_blk = fs->super->s_blocks_count;
112 printf (opt_hex ? _("Group %lu: (Blocks 0x%04x -- 0x%04x)\n"):
113 _("Group %lu: (Blocks %u -- %u)\n"), i,
114 group_blk, next_blk -1 );
115 if (ext2fs_bg_has_super (fs, i))
116 printf (opt_hex ? _(" %s Superblock at 0x%04x,"
117 " Group Descriptors at 0x%04x-0x%04x\n"):
118 _(" %s Superblock at %u,"
119 " Group Descriptors at %u-%u\n"),
120 i == 0 ? _("Primary") : _("Backup"),
121 group_blk, group_blk + 1,
122 group_blk + group_desc_blocks);
123 printf (opt_hex ? _(" Block bitmap at 0x%04x (+%d), "
124 "Inode bitmap at 0x%04x (+%d)\n "
125 "Inode table at 0x%04x-0x%04x (+%d)\n"):
126 _(" Block bitmap at %u (+%d), "
127 "Inode bitmap at %u (+%d)\n "
128 "Inode table at %u-%u (+%d)\n"),
129 fs->group_desc[i].bg_block_bitmap,
130 fs->group_desc[i].bg_block_bitmap - group_blk,
131 fs->group_desc[i].bg_inode_bitmap,
132 fs->group_desc[i].bg_inode_bitmap - group_blk,
133 fs->group_desc[i].bg_inode_table,
134 fs->group_desc[i].bg_inode_table +
135 inode_blocks_per_group - 1,
136 fs->group_desc[i].bg_inode_table - group_blk);
137 printf (_(" %d free blocks, %d free inodes, %d directories\n"),
138 fs->group_desc[i].bg_free_blocks_count,
139 fs->group_desc[i].bg_free_inodes_count,
140 fs->group_desc[i].bg_used_dirs_count);
141 printf (_(" Free blocks: "));
142 print_free (i, block_bitmap, fs->super->s_blocks_per_group,
143 fs->super->s_first_data_block);
144 block_bitmap += fs->super->s_blocks_per_group / 8;
146 printf (_(" Free inodes: "));
147 print_free (i, inode_bitmap, fs->super->s_inodes_per_group, 1);
148 inode_bitmap += fs->super->s_inodes_per_group / 8;
150 group_blk = next_blk;
154 static void list_bad_blocks(ext2_filsys fs)
156 badblocks_list bb_list = 0;
157 badblocks_iterate bb_iter;
161 retval = ext2fs_read_bb_inode(fs, &bb_list);
163 com_err("ext2fs_read_bb_inode", retval, "");
166 retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
168 com_err("ext2fs_badblocks_list_iterate_begin", retval,
169 _("while printing bad block list"));
172 if (ext2fs_badblocks_list_iterate(bb_iter, &blk))
173 printf(_("Bad blocks: %d"), blk);
174 while (ext2fs_badblocks_list_iterate(bb_iter, &blk))
176 ext2fs_badblocks_list_iterate_end(bb_iter);
180 static void dump_bad_blocks(ext2_filsys fs)
182 badblocks_list bb_list = 0;
183 badblocks_iterate bb_iter;
187 retval = ext2fs_read_bb_inode(fs, &bb_list);
189 com_err("ext2fs_read_bb_inode", retval, "");
192 retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
194 com_err("ext2fs_badblocks_list_iterate_begin", retval,
195 _("while printing bad block list"));
198 while (ext2fs_badblocks_list_iterate(bb_iter, &blk))
200 ext2fs_badblocks_list_iterate_end(bb_iter);
203 static void print_journal_information(ext2_filsys fs)
209 journal_superblock_t *jsb;
211 /* Get the journal superblock */
212 if ((retval = io_channel_read_blk(fs->io, fs->super->s_first_data_block+1, -1024, buf))) {
213 com_err(program_name, retval,
214 _("while reading journal superblock"));
217 jsb = (journal_superblock_t *) buf;
218 if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
219 (jsb->s_header.h_blocktype !=
220 (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
221 com_err(program_name, 0,
222 _("Couldn't find journal superblock magic numbers"));
227 printf("Journal block size: %d\n", ntohl(jsb->s_blocksize));
228 printf("Journal length: %d\n", ntohl(jsb->s_maxlen));
229 printf("Journal first block: %d\n", ntohl(jsb->s_first));
230 printf("Journal sequence: 0x%08x\n", ntohl(jsb->s_sequence));
231 printf("Journal start: %d\n", ntohl(jsb->s_start));
232 printf("Journal number of users: %d\n", ntohl(jsb->s_nr_users));
233 for (i=0; i < ntohl(jsb->s_nr_users); i++) {
237 printf("Journal users: ");
238 uuid_unparse(&jsb->s_users[i*16], str);
243 int main (int argc, char ** argv)
247 int print_badblocks = 0;
248 int use_superblock = 0;
249 int use_blocksize = 0;
258 setlocale(LC_MESSAGES, "");
259 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
260 textdomain(NLS_CAT_NAME);
262 initialize_ext2_error_table();
263 fprintf (stderr, _("dumpe2fs %s, %s for EXT2 FS %s, %s\n"),
264 E2FSPROGS_VERSION, E2FSPROGS_DATE,
265 EXT2FS_VERSION, EXT2FS_DATE);
267 program_name = *argv;
269 while ((c = getopt (argc, argv, "bfhixVo:")) != EOF) {
284 if (optarg[0] == 'b')
285 use_superblock = atoi(optarg+1);
286 else if (optarg[0] == 'B')
287 use_blocksize = atoi(optarg+1);
292 /* Print version number and exit */
293 fprintf(stderr, _("\tUsing %s\n"),
294 error_message(EXT2_ET_BASE));
303 if (optind > argc - 1)
305 device_name = argv[optind++];
306 if (use_superblock && !use_blocksize)
307 use_blocksize = 1024;
308 flags = EXT2_FLAG_JOURNAL_DEV_OK;
310 flags |= EXT2_FLAG_FORCE;
312 flags |= EXT2_FLAG_IMAGE_FILE;
314 retval = ext2fs_open (device_name, flags, use_superblock,
315 use_blocksize, unix_io_manager, &fs);
317 com_err (program_name, retval, _("while trying to open %s"),
319 printf (_("Couldn't find valid filesystem superblock.\n"));
322 if (print_badblocks) {
325 big_endian = ((fs->flags & EXT2_FLAG_SWAP_BYTES) != 0);
326 #ifdef WORDS_BIGENDIAN
327 big_endian = !big_endian;
330 printf(_("Note: This is a byte-swapped filesystem\n"));
331 list_super (fs->super);
332 if (fs->super->s_feature_incompat &
333 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
334 print_journal_information(fs);
338 list_bad_blocks (fs);
343 retval = ext2fs_read_bitmaps (fs);
345 com_err (program_name, retval,
346 _("while trying to read the bitmaps"),