blob: e5caac2da9517a4864b91e0e4f40dcc5af664907 [file] [log] [blame]
/*
* dumpe2fs.c - List the control structures of a second
* extended filesystem
*
* Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
* Laboratoire MASI, Institut Blaise Pascal
* Universite Pierre et Marie Curie (Paris VI)
*
* Copyright 1995, 1996, 1997 by Theodore Ts'o.
*
* %Begin-Header%
* This file may be redistributed under the terms of the GNU Public
* License.
* %End-Header%
*/
/*
* History:
* 94/01/09 - Creation
* 94/02/27 - Ported to use the ext2fs library
*/
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#else
extern char *optarg;
extern int optind;
#endif
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "ext2fs/ext2_fs.h"
#include "ext2fs/ext2fs.h"
#include "e2p/e2p.h"
#include "jfs_user.h"
#include "../version.h"
#include "nls-enable.h"
#define in_use(m, x) (ext2fs_test_bit ((x), (m)))
const char * program_name = "dumpe2fs";
char * device_name = NULL;
int opt_hex = 0;
static void usage(void)
{
fprintf (stderr, _("Usage: %s [-bfhixV] [-ob superblock] "
"[-oB blocksize] device\n"), program_name);
exit (1);
}
static void print_free (unsigned long group, char * bitmap,
unsigned long nbytes, unsigned long offset)
{
int p = 0;
unsigned long i;
unsigned long j;
for (i = 0; i < nbytes; i++)
if (!in_use (bitmap, i))
{
if (p)
printf (", ");
if (i == nbytes - 1 || in_use (bitmap, i + 1))
printf (opt_hex ? "0x%04x" : "%lu",
group * nbytes + i + offset);
else
{
for (j = i; j < nbytes && !in_use (bitmap, j);
j++)
;
printf (opt_hex ? "0x%04lx-0x%04lx" :
"%lu-%lu", group * nbytes + i + offset,
group * nbytes + (j - 1) + offset);
i = j - 1;
}
p = 1;
}
}
static void list_desc (ext2_filsys fs)
{
unsigned long i;
blk_t group_blk, next_blk;
char * block_bitmap = fs->block_map->bitmap;
char * inode_bitmap = fs->inode_map->bitmap;
int inode_blocks_per_group;
int group_desc_blocks;
inode_blocks_per_group = ((fs->super->s_inodes_per_group *
EXT2_INODE_SIZE(fs->super)) +
EXT2_BLOCK_SIZE(fs->super) - 1) /
EXT2_BLOCK_SIZE(fs->super);
group_desc_blocks = ((fs->super->s_blocks_count -
fs->super->s_first_data_block +
EXT2_BLOCKS_PER_GROUP(fs->super) - 1) /
EXT2_BLOCKS_PER_GROUP(fs->super) +
EXT2_DESC_PER_BLOCK(fs->super) - 1) /
EXT2_DESC_PER_BLOCK(fs->super);
printf ("\n");
group_blk = fs->super->s_first_data_block;
for (i = 0; i < fs->group_desc_count; i++) {
next_blk = group_blk + fs->super->s_blocks_per_group;
if (next_blk > fs->super->s_blocks_count)
next_blk = fs->super->s_blocks_count;
printf (opt_hex ? _("Group %lu: (Blocks 0x%04x -- 0x%04x)\n"):
_("Group %lu: (Blocks %u -- %u)\n"), i,
group_blk, next_blk -1 );
if (ext2fs_bg_has_super (fs, i))
printf (opt_hex ? _(" %s Superblock at 0x%04x,"
" Group Descriptors at 0x%04x-0x%04x\n"):
_(" %s Superblock at %u,"
" Group Descriptors at %u-%u\n"),
i == 0 ? _("Primary") : _("Backup"),
group_blk, group_blk + 1,
group_blk + group_desc_blocks);
printf (opt_hex ? _(" Block bitmap at 0x%04x (+%d), "
"Inode bitmap at 0x%04x (+%d)\n "
"Inode table at 0x%04x-0x%04x (+%d)\n"):
_(" Block bitmap at %u (+%d), "
"Inode bitmap at %u (+%d)\n "
"Inode table at %u-%u (+%d)\n"),
fs->group_desc[i].bg_block_bitmap,
fs->group_desc[i].bg_block_bitmap - group_blk,
fs->group_desc[i].bg_inode_bitmap,
fs->group_desc[i].bg_inode_bitmap - group_blk,
fs->group_desc[i].bg_inode_table,
fs->group_desc[i].bg_inode_table +
inode_blocks_per_group - 1,
fs->group_desc[i].bg_inode_table - group_blk);
printf (_(" %d free blocks, %d free inodes, %d directories\n"),
fs->group_desc[i].bg_free_blocks_count,
fs->group_desc[i].bg_free_inodes_count,
fs->group_desc[i].bg_used_dirs_count);
printf (_(" Free blocks: "));
print_free (i, block_bitmap, fs->super->s_blocks_per_group,
fs->super->s_first_data_block);
block_bitmap += fs->super->s_blocks_per_group / 8;
printf ("\n");
printf (_(" Free inodes: "));
print_free (i, inode_bitmap, fs->super->s_inodes_per_group, 1);
inode_bitmap += fs->super->s_inodes_per_group / 8;
printf ("\n");
group_blk = next_blk;
}
}
static void list_bad_blocks(ext2_filsys fs)
{
badblocks_list bb_list = 0;
badblocks_iterate bb_iter;
blk_t blk;
errcode_t retval;
retval = ext2fs_read_bb_inode(fs, &bb_list);
if (retval) {
com_err("ext2fs_read_bb_inode", retval, "");
exit(1);
}
retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
if (retval) {
com_err("ext2fs_badblocks_list_iterate_begin", retval,
_("while printing bad block list"));
exit(1);
}
if (ext2fs_badblocks_list_iterate(bb_iter, &blk))
printf(_("Bad blocks: %d"), blk);
while (ext2fs_badblocks_list_iterate(bb_iter, &blk))
printf(", %d", blk);
ext2fs_badblocks_list_iterate_end(bb_iter);
printf("\n");
}
static void dump_bad_blocks(ext2_filsys fs)
{
badblocks_list bb_list = 0;
badblocks_iterate bb_iter;
blk_t blk;
errcode_t retval;
retval = ext2fs_read_bb_inode(fs, &bb_list);
if (retval) {
com_err("ext2fs_read_bb_inode", retval, "");
exit(1);
}
retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
if (retval) {
com_err("ext2fs_badblocks_list_iterate_begin", retval,
_("while printing bad block list"));
exit(1);
}
while (ext2fs_badblocks_list_iterate(bb_iter, &blk))
printf("%d\n", blk);
ext2fs_badblocks_list_iterate_end(bb_iter);
}
static void print_journal_information(ext2_filsys fs)
{
errcode_t retval;
char buf[1024];
char str[80];
int i;
journal_superblock_t *jsb;
/* Get the journal superblock */
if ((retval = io_channel_read_blk(fs->io, fs->super->s_first_data_block+1, -1024, buf))) {
com_err(program_name, retval,
_("while reading journal superblock"));
exit(1);
}
jsb = (journal_superblock_t *) buf;
if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
(jsb->s_header.h_blocktype !=
(unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
com_err(program_name, 0,
_("Couldn't find journal superblock magic numbers"));
exit(1);
}
fputs("\n", stdout);
printf("Journal block size: %d\n", ntohl(jsb->s_blocksize));
printf("Journal length: %d\n", ntohl(jsb->s_maxlen));
printf("Journal first block: %d\n", ntohl(jsb->s_first));
printf("Journal sequence: 0x%08x\n", ntohl(jsb->s_sequence));
printf("Journal start: %d\n", ntohl(jsb->s_start));
printf("Journal number of users: %d\n", ntohl(jsb->s_nr_users));
for (i=0; i < ntohl(jsb->s_nr_users); i++) {
if (i)
printf(" ");
else
printf("Journal users: ");
uuid_unparse(&jsb->s_users[i*16], str);
printf("%s\n", str);
}
}
int main (int argc, char ** argv)
{
errcode_t retval;
ext2_filsys fs;
int print_badblocks = 0;
int use_superblock = 0;
int use_blocksize = 0;
int image_dump = 0;
int force = 0;
int flags;
int header_only = 0;
int big_endian;
int c;
#ifdef ENABLE_NLS
setlocale(LC_MESSAGES, "");
bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
textdomain(NLS_CAT_NAME);
#endif
initialize_ext2_error_table();
fprintf (stderr, _("dumpe2fs %s, %s for EXT2 FS %s, %s\n"),
E2FSPROGS_VERSION, E2FSPROGS_DATE,
EXT2FS_VERSION, EXT2FS_DATE);
if (argc && *argv)
program_name = *argv;
while ((c = getopt (argc, argv, "bfhixVo:")) != EOF) {
switch (c) {
case 'b':
print_badblocks++;
break;
case 'f':
force++;
break;
case 'h':
header_only++;
break;
case 'i':
image_dump++;
break;
case 'o':
if (optarg[0] == 'b')
use_superblock = atoi(optarg+1);
else if (optarg[0] == 'B')
use_blocksize = atoi(optarg+1);
else
usage();
break;
case 'V':
/* Print version number and exit */
fprintf(stderr, _("\tUsing %s\n"),
error_message(EXT2_ET_BASE));
exit(0);
case 'x':
opt_hex=1;
break;
default:
usage();
}
}
if (optind > argc - 1)
usage();
device_name = argv[optind++];
if (use_superblock && !use_blocksize)
use_blocksize = 1024;
flags = EXT2_FLAG_JOURNAL_DEV_OK;
if (force)
flags |= EXT2_FLAG_FORCE;
if (image_dump)
flags |= EXT2_FLAG_IMAGE_FILE;
retval = ext2fs_open (device_name, flags, use_superblock,
use_blocksize, unix_io_manager, &fs);
if (retval) {
com_err (program_name, retval, _("while trying to open %s"),
device_name);
printf (_("Couldn't find valid filesystem superblock.\n"));
exit (1);
}
if (print_badblocks) {
dump_bad_blocks(fs);
} else {
big_endian = ((fs->flags & EXT2_FLAG_SWAP_BYTES) != 0);
#ifdef WORDS_BIGENDIAN
big_endian = !big_endian;
#endif
if (big_endian)
printf(_("Note: This is a byte-swapped filesystem\n"));
list_super (fs->super);
if (fs->super->s_feature_incompat &
EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
print_journal_information(fs);
ext2fs_close(fs);
exit(0);
}
list_bad_blocks (fs);
if (header_only) {
ext2fs_close (fs);
exit (0);
}
retval = ext2fs_read_bitmaps (fs);
if (retval) {
com_err (program_name, retval,
_("while trying to read the bitmaps"),
device_name);
ext2fs_close (fs);
exit (1);
}
list_desc (fs);
}
ext2fs_close (fs);
exit (0);
}