← Back to branch summary

~ubuntu-branches/ubuntu/edgy/e2fsprogs/edgy

« back to all changes in this revision

Viewing changes to misc/dumpe2fs.c

  • Committer: Bazaar Package Importer
  • Author(s): Yann Dirson
  • Date: 2002-03-21 23:58:48 UTC
  • Revision ID: james.westby@ubuntu.com-20020321235848-cmmy98hy0nihp922
Tags: upstream-1.27
Import upstream version 1.27

Show diffs side-by-side

added added

removed removed

Lines of Context:
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
#ifdef HAVE_GETOPT_H
 
24
#include <getopt.h>
 
25
#else
 
26
extern char *optarg;
 
27
extern int optind;
 
28
#endif
 
29
#include <fcntl.h>
 
30
#include <stdio.h>
 
31
#include <stdlib.h>
 
32
#include <string.h>
 
33
#include <unistd.h>
 
34
 
 
35
#include "ext2fs/ext2_fs.h"
 
36
 
 
37
#include "ext2fs/ext2fs.h"
 
38
#include "e2p/e2p.h"
 
39
#include "jfs_user.h"
 
40
#include <uuid/uuid.h>
 
41
 
 
42
#include "../version.h"
 
43
#include "nls-enable.h"
 
44
 
 
45
#define in_use(m, x)    (ext2fs_test_bit ((x), (m)))
 
46
 
 
47
const char * program_name = "dumpe2fs";
 
48
char * device_name = NULL;
 
49
const char *num_format = "%lu";
 
50
char range_format[16];
 
51
 
 
52
static void usage(void)
 
53
{
 
54
        fprintf (stderr, _("Usage: %s [-bfhixV] [-ob superblock] "
 
55
                 "[-oB blocksize] device\n"), program_name);
 
56
        exit (1);
 
57
}
 
58
 
 
59
static void print_free (unsigned long group, char * bitmap,
 
60
                        unsigned long nbytes, unsigned long offset)
 
61
{
 
62
        int p = 0;
 
63
        unsigned long i;
 
64
        unsigned long j;
 
65
 
 
66
        offset += group * nbytes;
 
67
        for (i = 0; i < nbytes; i++)
 
68
                if (!in_use (bitmap, i))
 
69
                {
 
70
                        if (p)
 
71
                                printf (", ");
 
72
                        printf (num_format, i + offset);
 
73
                        for (j = i; j < nbytes && !in_use (bitmap, j); j++)
 
74
                                ;
 
75
                        if (--j != i) {
 
76
                                fputc('-', stdout);
 
77
                                printf(num_format, j + offset);
 
78
                                i = j;
 
79
                        }
 
80
                        p = 1;
 
81
                }
 
82
}
 
83
 
 
84
static void list_desc (ext2_filsys fs)
 
85
{
 
86
        unsigned long i;
 
87
        long diff;
 
88
        blk_t   group_blk, next_blk;
 
89
        char * block_bitmap = fs->block_map->bitmap;
 
90
        char * inode_bitmap = fs->inode_map->bitmap;
 
91
        int inode_blocks_per_group;
 
92
        int group_desc_blocks;
 
93
 
 
94
        inode_blocks_per_group = ((fs->super->s_inodes_per_group *
 
95
                                   EXT2_INODE_SIZE(fs->super)) +
 
96
                                  EXT2_BLOCK_SIZE(fs->super) - 1) /
 
97
                                 EXT2_BLOCK_SIZE(fs->super);
 
98
        group_desc_blocks = ((fs->super->s_blocks_count -
 
99
                              fs->super->s_first_data_block +
 
100
                              EXT2_BLOCKS_PER_GROUP(fs->super) - 1) /
 
101
                             EXT2_BLOCKS_PER_GROUP(fs->super) +
 
102
                             EXT2_DESC_PER_BLOCK(fs->super) - 1) /
 
103
                            EXT2_DESC_PER_BLOCK(fs->super);
 
104
 
 
105
        fputc('\n', stdout);
 
106
        group_blk = fs->super->s_first_data_block;
 
107
        for (i = 0; i < fs->group_desc_count; i++) {
 
108
                next_blk = group_blk + fs->super->s_blocks_per_group;
 
109
                if (next_blk > fs->super->s_blocks_count)
 
110
                        next_blk = fs->super->s_blocks_count;
 
111
                printf (_("Group %lu: (Blocks "), i);
 
112
                printf(range_format, group_blk, next_blk - 1);
 
113
                fputs(")\n", stdout);
 
114
                if (ext2fs_bg_has_super (fs, i)) {
 
115
                        printf (_("  %s Superblock at "),
 
116
                                i == 0 ? _("Primary") : _("Backup"));
 
117
                        printf(num_format, group_blk);
 
118
                        printf(_(",  Group Descriptors at "));
 
119
                        printf(range_format, group_blk+1,
 
120
                               group_blk + group_desc_blocks);
 
121
                        fputc('\n', stdout);
 
122
                }
 
123
                fputs(_("  Block bitmap at "), stdout);
 
124
                printf(num_format, fs->group_desc[i].bg_block_bitmap);
 
125
                diff = fs->group_desc[i].bg_block_bitmap - group_blk;
 
126
                if (diff >= 0)
 
127
                        printf(" (+%ld)", diff);
 
128
                fputs(_(", Inode bitmap at "), stdout);
 
129
                printf(num_format, fs->group_desc[i].bg_inode_bitmap);
 
130
                diff = fs->group_desc[i].bg_inode_bitmap - group_blk;
 
131
                if (diff >= 0)
 
132
                        printf(" (+%ld)", diff);
 
133
                fputs(_("\n  Inode table at "), stdout);
 
134
                printf(range_format, fs->group_desc[i].bg_inode_table,
 
135
                       fs->group_desc[i].bg_inode_table +
 
136
                       inode_blocks_per_group - 1);
 
137
                diff = fs->group_desc[i].bg_inode_table - group_blk;
 
138
                if (diff > 0)
 
139
                        printf(" (+%ld)", diff);
 
140
                printf (_("\n  %d free blocks, %d free inodes, "
 
141
                          "%d directories\n  Free blocks: "),
 
142
                        fs->group_desc[i].bg_free_blocks_count,
 
143
                        fs->group_desc[i].bg_free_inodes_count,
 
144
                        fs->group_desc[i].bg_used_dirs_count);
 
145
                print_free (i, block_bitmap, fs->super->s_blocks_per_group,
 
146
                            fs->super->s_first_data_block);
 
147
                fputs(_("\n  Free inodes: "), stdout);
 
148
                print_free (i, inode_bitmap, fs->super->s_inodes_per_group, 1);
 
149
                fputc('\n', stdout);
 
150
                block_bitmap += fs->super->s_blocks_per_group / 8;
 
151
                inode_bitmap += fs->super->s_inodes_per_group / 8;
 
152
                group_blk = next_blk;
 
153
        }
 
154
}
 
155
 
 
156
static void list_bad_blocks(ext2_filsys fs, int dump)
 
157
{
 
158
        badblocks_list          bb_list = 0;
 
159
        badblocks_iterate       bb_iter;
 
160
        blk_t                   blk;
 
161
        errcode_t               retval;
 
162
        const char              *header, *fmt;
 
163
 
 
164
        retval = ext2fs_read_bb_inode(fs, &bb_list);
 
165
        if (retval) {
 
166
                com_err("ext2fs_read_bb_inode", retval, "");
 
167
                return;
 
168
        }
 
169
        retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
 
170
        if (retval) {
 
171
                com_err("ext2fs_badblocks_list_iterate_begin", retval,
 
172
                        _("while printing bad block list"));
 
173
                return;
 
174
        }
 
175
        if (dump) {
 
176
                header = fmt = "%d\n";
 
177
        } else {
 
178
                header =  _("Bad blocks: %d");
 
179
                fmt = ", %d";
 
180
        }
 
181
        while (ext2fs_badblocks_list_iterate(bb_iter, &blk)) {
 
182
                printf(header ? header : fmt, blk);
 
183
                header = 0;
 
184
        }
 
185
        ext2fs_badblocks_list_iterate_end(bb_iter);
 
186
        if (!dump)
 
187
                fputc('\n', stdout);
 
188
}
 
189
 
 
190
static void print_journal_information(ext2_filsys fs)
 
191
{
 
192
        errcode_t       retval;
 
193
        char            buf[1024];
 
194
        char            str[80];
 
195
        int             i;
 
196
        journal_superblock_t    *jsb;
 
197
 
 
198
        /* Get the journal superblock */
 
199
        if ((retval = io_channel_read_blk(fs->io, fs->super->s_first_data_block+1, -1024, buf))) {
 
200
                com_err(program_name, retval,
 
201
                        _("while reading journal superblock"));
 
202
                exit(1);
 
203
        }
 
204
        jsb = (journal_superblock_t *) buf;
 
205
        if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
 
206
            (jsb->s_header.h_blocktype !=
 
207
             (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
 
208
                com_err(program_name, 0,
 
209
                        _("Couldn't find journal superblock magic numbers"));
 
210
                exit(1);
 
211
        }
 
212
 
 
213
        printf(_("\nJournal block size:       %d\n"
 
214
                 "Journal length:           %d\n"
 
215
                 "Journal first block:      %d\n"
 
216
                 "Journal sequence:         0x%08x\n"
 
217
                 "Journal start:            %d\n"
 
218
                 "Journal number of users:  %d\n"),
 
219
               ntohl(jsb->s_blocksize),  ntohl(jsb->s_maxlen),
 
220
               ntohl(jsb->s_first), ntohl(jsb->s_sequence),
 
221
               ntohl(jsb->s_start), ntohl(jsb->s_nr_users));
 
222
 
 
223
        for (i=0; i < ntohl(jsb->s_nr_users); i++) {
 
224
                uuid_unparse(&jsb->s_users[i*16], str);
 
225
                printf(i ? "                          %s\n"
 
226
                       : "Journal users:            %s\n",
 
227
                       str);
 
228
        }
 
229
}
 
230
 
 
231
int main (int argc, char ** argv)
 
232
{
 
233
        errcode_t       retval;
 
234
        ext2_filsys     fs;
 
235
        int             print_badblocks = 0;
 
236
        int             use_superblock = 0;
 
237
        int             use_blocksize = 0;
 
238
        int             image_dump = 0;
 
239
        int             force = 0;
 
240
        int             flags;
 
241
        int             header_only = 0;
 
242
        int             big_endian;
 
243
        int             c;
 
244
 
 
245
#ifdef ENABLE_NLS
 
246
        setlocale(LC_MESSAGES, "");
 
247
        setlocale(LC_CTYPE, "");
 
248
        bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
 
249
        textdomain(NLS_CAT_NAME);
 
250
#endif
 
251
        initialize_ext2_error_table();
 
252
        fprintf (stderr, "dumpe2fs %s (%s)\n", E2FSPROGS_VERSION,
 
253
                 E2FSPROGS_DATE);
 
254
        if (argc && *argv)
 
255
                program_name = *argv;
 
256
        
 
257
        while ((c = getopt (argc, argv, "bfhixVo:")) != EOF) {
 
258
                switch (c) {
 
259
                case 'b':
 
260
                        print_badblocks++;
 
261
                        break;
 
262
                case 'f':
 
263
                        force++;
 
264
                        break;
 
265
                case 'h':
 
266
                        header_only++;
 
267
                        break;
 
268
                case 'i':
 
269
                        image_dump++;
 
270
                        break;
 
271
                case 'o':
 
272
                        if (optarg[0] == 'b')
 
273
                                use_superblock = atoi(optarg+1);
 
274
                        else if (optarg[0] == 'B')
 
275
                                use_blocksize = atoi(optarg+1);
 
276
                        else
 
277
                                usage();
 
278
                        break;
 
279
                case 'V':
 
280
                        /* Print version number and exit */
 
281
                        fprintf(stderr, _("\tUsing %s\n"),
 
282
                                error_message(EXT2_ET_BASE));
 
283
                        exit(0);
 
284
                case 'x':
 
285
                        num_format = "0x%04x";
 
286
                        break;
 
287
                default:
 
288
                        usage();
 
289
                }
 
290
        }
 
291
        if (optind > argc - 1)
 
292
                usage();
 
293
        sprintf(range_format, "%s-%s", num_format, num_format);
 
294
        device_name = argv[optind++];
 
295
        if (use_superblock && !use_blocksize)
 
296
                use_blocksize = 1024;
 
297
        flags = EXT2_FLAG_JOURNAL_DEV_OK;
 
298
        if (force)
 
299
                flags |= EXT2_FLAG_FORCE;
 
300
        if (image_dump)
 
301
                flags |= EXT2_FLAG_IMAGE_FILE;
 
302
        
 
303
        retval = ext2fs_open (device_name, flags, use_superblock,
 
304
                              use_blocksize, unix_io_manager, &fs);
 
305
        if (retval) {
 
306
                com_err (program_name, retval, _("while trying to open %s"),
 
307
                         device_name);
 
308
                printf (_("Couldn't find valid filesystem superblock.\n"));
 
309
                exit (1);
 
310
        }
 
311
        if (print_badblocks) {
 
312
                list_bad_blocks(fs, 1);
 
313
        } else {
 
314
                big_endian = ((fs->flags & EXT2_FLAG_SWAP_BYTES) != 0);
 
315
#ifdef WORDS_BIGENDIAN
 
316
                big_endian = !big_endian;
 
317
#endif
 
318
                if (big_endian)
 
319
                        printf(_("Note: This is a byte-swapped filesystem\n"));
 
320
                list_super (fs->super);
 
321
                if (fs->super->s_feature_incompat &
 
322
                      EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
 
323
                        print_journal_information(fs);
 
324
                        ext2fs_close(fs);
 
325
                        exit(0);
 
326
                }
 
327
                list_bad_blocks(fs, 0);
 
328
                if (header_only) {
 
329
                        ext2fs_close (fs);
 
330
                        exit (0);
 
331
                }
 
332
                retval = ext2fs_read_bitmaps (fs);
 
333
                if (retval) {
 
334
                        com_err (program_name, retval,
 
335
                                 _("while trying to read the bitmaps"),
 
336
                                 device_name);
 
337
                        ext2fs_close (fs);
 
338
                        exit (1);
 
339
                }
 
340
                list_desc (fs);
 
341
        }
 
342
        ext2fs_close (fs);
 
343
        exit (0);
 
344
}