mirror of https://github.com/vitalif/e2fsprogs
588 lines
15 KiB
C
588 lines
15 KiB
C
/*
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* dumpe2fs.c - List the control structures of a second
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* extended filesystem
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*
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* Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
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* Laboratoire MASI, Institut Blaise Pascal
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* Universite Pierre et Marie Curie (Paris VI)
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*
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* Copyright 1995, 1996, 1997 by Theodore Ts'o.
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*
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* %Begin-Header%
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* This file may be redistributed under the terms of the GNU Public
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* License.
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* %End-Header%
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*/
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/*
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* History:
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* 94/01/09 - Creation
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* 94/02/27 - Ported to use the ext2fs library
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*/
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#ifdef HAVE_GETOPT_H
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#include <getopt.h>
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#else
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extern char *optarg;
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extern int optind;
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#endif
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "ext2fs/ext2_fs.h"
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#include "ext2fs/ext2fs.h"
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#include "e2p/e2p.h"
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#include "jfs_user.h"
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#include <uuid/uuid.h>
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#include "../version.h"
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#include "nls-enable.h"
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#define in_use(m, x) (ext2fs_test_bit ((x), (m)))
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const char * program_name = "dumpe2fs";
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char * device_name = NULL;
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int hex_format = 0;
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static void usage(void)
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{
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fprintf (stderr, _("Usage: %s [-bfhixV] [-o superblock=<num>] "
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"[-o blocksize=<num>] device\n"), program_name);
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exit (1);
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}
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static void print_number(unsigned long num)
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{
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if (hex_format)
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printf("0x%04lx", num);
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else
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printf("%lu", num);
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}
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static void print_range(unsigned long a, unsigned long b)
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{
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if (hex_format)
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printf("0x%04lx-0x%04lx", a, b);
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else
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printf("%lu-%lu", a, b);
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}
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static void print_free (unsigned long group, char * bitmap,
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unsigned long nbytes, unsigned long offset)
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{
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int p = 0;
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unsigned long i;
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unsigned long j;
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offset += group * nbytes;
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for (i = 0; i < nbytes; i++)
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if (!in_use (bitmap, i))
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{
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if (p)
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printf (", ");
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print_number(i + offset);
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for (j = i; j < nbytes && !in_use (bitmap, j); j++)
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;
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if (--j != i) {
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fputc('-', stdout);
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print_number(j + offset);
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i = j;
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}
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p = 1;
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}
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}
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static void print_bg_opt(int bg_flags, int mask,
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const char *str, int *first)
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{
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if (bg_flags & mask) {
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if (*first) {
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fputs(" [", stdout);
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*first = 0;
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} else
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fputs(", ", stdout);
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fputs(str, stdout);
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}
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}
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static void print_bg_opts(ext2_filsys fs, dgrp_t i)
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{
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int first = 1, bg_flags = 0;
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if (fs->super->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
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bg_flags = ext2fs_bg_flags(fs, i);
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print_bg_opt(bg_flags, EXT2_BG_INODE_UNINIT, "INODE_UNINIT",
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&first);
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print_bg_opt(bg_flags, EXT2_BG_BLOCK_UNINIT, "BLOCK_UNINIT",
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&first);
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print_bg_opt(bg_flags, EXT2_BG_INODE_ZEROED, "ITABLE_ZEROED",
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&first);
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if (!first)
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fputc(']', stdout);
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fputc('\n', stdout);
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}
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static void list_desc (ext2_filsys fs)
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{
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unsigned long i;
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long diff;
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blk_t first_block, last_block;
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blk_t super_blk, old_desc_blk, new_desc_blk;
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char *block_bitmap=NULL, *inode_bitmap=NULL;
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int inode_blocks_per_group, old_desc_blocks, reserved_gdt;
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int block_nbytes, inode_nbytes;
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int has_super;
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blk_t blk_itr = fs->super->s_first_data_block;
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ext2_ino_t ino_itr = 1;
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block_nbytes = EXT2_BLOCKS_PER_GROUP(fs->super) / 8;
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inode_nbytes = EXT2_INODES_PER_GROUP(fs->super) / 8;
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if (fs->block_map)
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block_bitmap = malloc(block_nbytes);
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if (fs->inode_map)
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inode_bitmap = malloc(inode_nbytes);
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inode_blocks_per_group = ((fs->super->s_inodes_per_group *
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EXT2_INODE_SIZE(fs->super)) +
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EXT2_BLOCK_SIZE(fs->super) - 1) /
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EXT2_BLOCK_SIZE(fs->super);
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reserved_gdt = fs->super->s_reserved_gdt_blocks;
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fputc('\n', stdout);
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first_block = fs->super->s_first_data_block;
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if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
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old_desc_blocks = fs->super->s_first_meta_bg;
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else
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old_desc_blocks = fs->desc_blocks;
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for (i = 0; i < fs->group_desc_count; i++) {
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first_block = ext2fs_group_first_block2(fs, i);
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last_block = ext2fs_group_last_block2(fs, i);
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ext2fs_super_and_bgd_loc(fs, i, &super_blk,
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&old_desc_blk, &new_desc_blk, 0);
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printf (_("Group %lu: (Blocks "), i);
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print_range(first_block, last_block);
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fputs(")", stdout);
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print_bg_opts(fs, i);
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if (fs->super->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
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printf(_(" Checksum 0x%04x, unused inodes %u\n"),
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ext2fs_bg_checksum(fs, i),
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ext2fs_bg_itable_unused(fs, i));
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has_super = ((i==0) || super_blk);
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if (has_super) {
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printf (_(" %s superblock at "),
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i == 0 ? _("Primary") : _("Backup"));
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print_number(super_blk);
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}
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if (old_desc_blk) {
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printf(_(", Group descriptors at "));
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print_range(old_desc_blk,
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old_desc_blk + old_desc_blocks - 1);
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if (reserved_gdt) {
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printf(_("\n Reserved GDT blocks at "));
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print_range(old_desc_blk + old_desc_blocks,
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old_desc_blk + old_desc_blocks +
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reserved_gdt - 1);
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}
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} else if (new_desc_blk) {
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fputc(has_super ? ',' : ' ', stdout);
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printf(_(" Group descriptor at "));
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print_number(new_desc_blk);
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has_super++;
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}
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if (has_super)
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fputc('\n', stdout);
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fputs(_(" Block bitmap at "), stdout);
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print_number(ext2fs_block_bitmap_loc(fs, i));
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diff = ext2fs_block_bitmap_loc(fs, i) - first_block;
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if (diff >= 0)
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printf(" (+%ld)", diff);
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fputs(_(", Inode bitmap at "), stdout);
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print_number(ext2fs_inode_bitmap_loc(fs, i));
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diff = ext2fs_inode_bitmap_loc(fs, i) - first_block;
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if (diff >= 0)
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printf(" (+%ld)", diff);
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fputs(_("\n Inode table at "), stdout);
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print_range(ext2fs_inode_table_loc(fs, i),
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ext2fs_inode_table_loc(fs, i) +
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inode_blocks_per_group - 1);
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diff = ext2fs_inode_table_loc(fs, i) - first_block;
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if (diff > 0)
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printf(" (+%ld)", diff);
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printf (_("\n %u free blocks, %u free inodes, "
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"%u directories%s"),
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ext2fs_bg_free_blocks_count(fs, i),
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ext2fs_bg_free_inodes_count(fs, i),
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ext2fs_bg_used_dirs_count(fs, i),
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ext2fs_bg_itable_unused(fs, i) ? "" : "\n");
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if (ext2fs_bg_itable_unused(fs, i))
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printf (_(", %u unused inodes\n"),
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ext2fs_bg_itable_unused(fs, i));
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if (block_bitmap) {
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fputs(_(" Free blocks: "), stdout);
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ext2fs_get_block_bitmap_range2(fs->block_map,
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blk_itr, block_nbytes << 3, block_bitmap);
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print_free (i, block_bitmap,
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fs->super->s_blocks_per_group,
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fs->super->s_first_data_block);
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fputc('\n', stdout);
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blk_itr += fs->super->s_blocks_per_group;
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}
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if (inode_bitmap) {
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fputs(_(" Free inodes: "), stdout);
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ext2fs_get_inode_bitmap_range2(fs->inode_map,
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ino_itr, inode_nbytes << 3, inode_bitmap);
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print_free (i, inode_bitmap,
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fs->super->s_inodes_per_group, 1);
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fputc('\n', stdout);
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ino_itr += fs->super->s_inodes_per_group;
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}
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}
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if (block_bitmap)
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free(block_bitmap);
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if (inode_bitmap)
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free(inode_bitmap);
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}
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static void list_bad_blocks(ext2_filsys fs, int dump)
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{
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badblocks_list bb_list = 0;
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badblocks_iterate bb_iter;
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blk_t blk;
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errcode_t retval;
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const char *header, *fmt;
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retval = ext2fs_read_bb_inode(fs, &bb_list);
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if (retval) {
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com_err("ext2fs_read_bb_inode", retval, 0);
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return;
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}
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retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
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if (retval) {
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com_err("ext2fs_badblocks_list_iterate_begin", retval,
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_("while printing bad block list"));
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return;
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}
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if (dump) {
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header = fmt = "%u\n";
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} else {
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header = _("Bad blocks: %u");
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fmt = ", %u";
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}
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while (ext2fs_badblocks_list_iterate(bb_iter, &blk)) {
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printf(header ? header : fmt, blk);
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header = 0;
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}
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ext2fs_badblocks_list_iterate_end(bb_iter);
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if (!dump)
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fputc('\n', stdout);
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ext2fs_badblocks_list_free(bb_list);
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}
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static void print_inline_journal_information(ext2_filsys fs)
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{
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journal_superblock_t *jsb;
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struct ext2_inode inode;
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ext2_file_t journal_file;
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errcode_t retval;
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ino_t ino = fs->super->s_journal_inum;
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char buf[1024];
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__u32 *mask_ptr, mask, m;
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int i, j, size, printed = 0;
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retval = ext2fs_read_inode(fs, ino, &inode);
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if (retval) {
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com_err(program_name, retval,
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_("while reading journal inode"));
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exit(1);
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}
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retval = ext2fs_file_open2(fs, ino, &inode, 0, &journal_file);
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if (retval) {
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com_err(program_name, retval,
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_("while opening journal inode"));
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exit(1);
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}
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retval = ext2fs_file_read(journal_file, buf, sizeof(buf), 0);
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if (retval) {
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com_err(program_name, retval,
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_("while reading journal super block"));
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exit(1);
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}
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ext2fs_file_close(journal_file);
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jsb = (journal_superblock_t *) buf;
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if (be32_to_cpu(jsb->s_header.h_magic) != JFS_MAGIC_NUMBER) {
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fprintf(stderr,
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"Journal superblock magic number invalid!\n");
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exit(1);
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}
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printf(_("Journal features: "));
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for (i=0, mask_ptr=&jsb->s_feature_compat; i <3; i++,mask_ptr++) {
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mask = be32_to_cpu(*mask_ptr);
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for (j=0,m=1; j < 32; j++, m<<=1) {
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if (mask & m) {
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printf(" %s", e2p_jrnl_feature2string(i, m));
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printed++;
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}
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}
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}
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if (printed == 0)
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printf(" (none)");
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printf("\n");
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fputs(_("Journal size: "), stdout);
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if ((fs->super->s_feature_ro_compat &
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EXT4_FEATURE_RO_COMPAT_HUGE_FILE) &&
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(inode.i_flags & EXT4_HUGE_FILE_FL))
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size = inode.i_blocks / (fs->blocksize / 1024);
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else
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size = inode.i_blocks >> 1;
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if (size < 8192)
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printf("%uk\n", size);
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else
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printf("%uM\n", size >> 10);
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printf(_("Journal length: %u\n"
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"Journal sequence: 0x%08x\n"
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"Journal start: %u\n"),
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(unsigned int)ntohl(jsb->s_maxlen),
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(unsigned int)ntohl(jsb->s_sequence),
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(unsigned int)ntohl(jsb->s_start));
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}
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static void print_journal_information(ext2_filsys fs)
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{
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errcode_t retval;
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char buf[1024];
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char str[80];
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unsigned int i;
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journal_superblock_t *jsb;
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/* Get the journal superblock */
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if ((retval = io_channel_read_blk64(fs->io, fs->super->s_first_data_block+1, -1024, buf))) {
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com_err(program_name, retval,
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_("while reading journal superblock"));
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exit(1);
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}
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jsb = (journal_superblock_t *) buf;
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if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
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(jsb->s_header.h_blocktype !=
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(unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
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com_err(program_name, 0,
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_("Couldn't find journal superblock magic numbers"));
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exit(1);
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}
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printf(_("\nJournal block size: %u\n"
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"Journal length: %u\n"
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"Journal first block: %u\n"
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"Journal sequence: 0x%08x\n"
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"Journal start: %u\n"
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"Journal number of users: %u\n"),
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(unsigned int)ntohl(jsb->s_blocksize), (unsigned int)ntohl(jsb->s_maxlen),
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(unsigned int)ntohl(jsb->s_first), (unsigned int)ntohl(jsb->s_sequence),
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(unsigned int)ntohl(jsb->s_start), (unsigned int)ntohl(jsb->s_nr_users));
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for (i=0; i < ntohl(jsb->s_nr_users); i++) {
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uuid_unparse(&jsb->s_users[i*16], str);
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printf(i ? " %s\n"
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: _("Journal users: %s\n"),
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str);
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}
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}
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static void parse_extended_opts(const char *opts, blk_t *superblock,
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int *blocksize)
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{
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char *buf, *token, *next, *p, *arg, *badopt = 0;
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int len;
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int do_usage = 0;
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len = strlen(opts);
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buf = malloc(len+1);
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if (!buf) {
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fprintf(stderr,
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_("Couldn't allocate memory to parse options!\n"));
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exit(1);
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}
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strcpy(buf, opts);
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for (token = buf; token && *token; token = next) {
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p = strchr(token, ',');
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next = 0;
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if (p) {
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*p = 0;
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next = p+1;
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}
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arg = strchr(token, '=');
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if (arg) {
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*arg = 0;
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arg++;
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}
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if (strcmp(token, "superblock") == 0 ||
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strcmp(token, "sb") == 0) {
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if (!arg) {
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do_usage++;
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badopt = token;
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continue;
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}
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*superblock = strtoul(arg, &p, 0);
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if (*p) {
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fprintf(stderr,
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_("Invalid superblock parameter: %s\n"),
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arg);
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do_usage++;
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continue;
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}
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} else if (strcmp(token, "blocksize") == 0 ||
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strcmp(token, "bs") == 0) {
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if (!arg) {
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do_usage++;
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badopt = token;
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continue;
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}
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*blocksize = strtoul(arg, &p, 0);
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if (*p) {
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fprintf(stderr,
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_("Invalid blocksize parameter: %s\n"),
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arg);
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do_usage++;
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continue;
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}
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} else {
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do_usage++;
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badopt = token;
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}
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}
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if (do_usage) {
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fprintf(stderr, _("\nBad extended option(s) specified: %s\n\n"
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"Extended options are separated by commas, "
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"and may take an argument which\n"
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"\tis set off by an equals ('=') sign.\n\n"
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"Valid extended options are:\n"
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"\tsuperblock=<superblock number>\n"
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"\tblocksize=<blocksize>\n"),
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badopt ? badopt : "");
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free(buf);
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exit(1);
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}
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free(buf);
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}
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int main (int argc, char ** argv)
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{
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errcode_t retval;
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ext2_filsys fs;
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int print_badblocks = 0;
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blk_t use_superblock = 0;
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int use_blocksize = 0;
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int image_dump = 0;
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int force = 0;
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int flags;
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int header_only = 0;
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int c;
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#ifdef ENABLE_NLS
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|
setlocale(LC_MESSAGES, "");
|
|
setlocale(LC_CTYPE, "");
|
|
bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
|
|
textdomain(NLS_CAT_NAME);
|
|
#endif
|
|
add_error_table(&et_ext2_error_table);
|
|
fprintf (stderr, "dumpe2fs %s (%s)\n", E2FSPROGS_VERSION,
|
|
E2FSPROGS_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':
|
|
parse_extended_opts(optarg, &use_superblock,
|
|
&use_blocksize);
|
|
break;
|
|
case 'V':
|
|
/* Print version number and exit */
|
|
fprintf(stderr, _("\tUsing %s\n"),
|
|
error_message(EXT2_ET_BASE));
|
|
exit(0);
|
|
case 'x':
|
|
hex_format++;
|
|
break;
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
if (optind > argc - 1)
|
|
usage();
|
|
device_name = argv[optind++];
|
|
flags = EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_SOFTSUPP_FEATURES;
|
|
if (force)
|
|
flags |= EXT2_FLAG_FORCE;
|
|
if (image_dump)
|
|
flags |= EXT2_FLAG_IMAGE_FILE;
|
|
|
|
if (use_superblock && !use_blocksize) {
|
|
for (use_blocksize = EXT2_MIN_BLOCK_SIZE;
|
|
use_blocksize <= EXT2_MAX_BLOCK_SIZE;
|
|
use_blocksize *= 2) {
|
|
retval = ext2fs_open (device_name, flags,
|
|
use_superblock,
|
|
use_blocksize, unix_io_manager,
|
|
&fs);
|
|
if (!retval)
|
|
break;
|
|
}
|
|
} else
|
|
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) {
|
|
list_bad_blocks(fs, 1);
|
|
} else {
|
|
list_super (fs->super);
|
|
if (fs->super->s_feature_incompat &
|
|
EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
|
|
print_journal_information(fs);
|
|
ext2fs_close(fs);
|
|
exit(0);
|
|
}
|
|
if ((fs->super->s_feature_compat &
|
|
EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
|
|
(fs->super->s_journal_inum != 0))
|
|
print_inline_journal_information(fs);
|
|
list_bad_blocks(fs, 0);
|
|
if (header_only) {
|
|
ext2fs_close (fs);
|
|
exit (0);
|
|
}
|
|
retval = ext2fs_read_bitmaps (fs);
|
|
list_desc (fs);
|
|
if (retval) {
|
|
printf(_("\n%s: %s: error reading bitmaps: %s\n"),
|
|
program_name, device_name,
|
|
error_message(retval));
|
|
}
|
|
}
|
|
ext2fs_close (fs);
|
|
remove_error_table(&et_ext2_error_table);
|
|
exit (0);
|
|
}
|