| /* |
| * 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> |
| #endif |
| #include <fcntl.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| #include <linux/ext2_fs.h> |
| |
| #include "ext2fs/ext2fs.h" |
| #include "e2p/e2p.h" |
| |
| #include "../version.h" |
| |
| #define in_use(m, x) (ext2fs_test_bit ((x), (m))) |
| |
| const char * program_name = "dumpe2fs"; |
| char * device_name = NULL; |
| |
| static volatile void usage (void) |
| { |
| fprintf (stderr, "usage: %s [-bV] 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 ("%lu", group * nbytes + i + offset); |
| else |
| { |
| for (j = i; j < nbytes && !in_use (bitmap, j); |
| j++) |
| ; |
| printf ("%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; |
| |
| 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 ("Group %lu: (Blocks %u -- %u)\n", i, |
| group_blk, next_blk -1 ); |
| printf (" Block bitmap at %u (+%d), " |
| "Inode bitmap at %u (+%d)\n " |
| "Inode table at %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 - 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 = badblocks_list_iterate_begin(bb_list, &bb_iter); |
| if (retval) { |
| com_err("badblocks_list_iterate_begin", retval, |
| "while printing bad block list"); |
| exit(1); |
| } |
| if (badblocks_list_iterate(bb_iter, &blk)) |
| printf("Bad blocks: %d", blk); |
| while (badblocks_list_iterate(bb_iter, &blk)) |
| printf(", %d", blk); |
| 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 = badblocks_list_iterate_begin(bb_list, &bb_iter); |
| if (retval) { |
| com_err("badblocks_list_iterate_begin", retval, |
| "while printing bad block list"); |
| exit(1); |
| } |
| while (badblocks_list_iterate(bb_iter, &blk)) |
| printf("%d\n", blk); |
| badblocks_list_iterate_end(bb_iter); |
| } |
| |
| static int i386_byteorder(void) |
| { |
| int one = 1; |
| char *cp = (char *) &one; |
| |
| return (*cp == 1); |
| } |
| |
| void main (int argc, char ** argv) |
| { |
| errcode_t retval; |
| ext2_filsys fs; |
| int print_badblocks = 0; |
| int big_endian; |
| char c; |
| |
| 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, "bV")) != EOF) { |
| switch (c) { |
| case 'b': |
| print_badblocks++; |
| break; |
| case 'V': |
| /* Print version number and exit */ |
| fprintf(stderr, "\tUsing %s\n", |
| error_message(EXT2_ET_BASE)); |
| exit(0); |
| default: |
| usage (); |
| } |
| } |
| if (optind > argc - 1) |
| usage (); |
| device_name = argv[optind++]; |
| retval = ext2fs_open (device_name, 0, 0, 0, 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 { |
| 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); |
| } |
| big_endian = ((fs->flags & EXT2_FLAG_SWAP_BYTES) != 0); |
| if (!i386_byteorder()) |
| big_endian = !big_endian; |
| if (big_endian) |
| printf("Note: This is a byte-swapped filesystem\n"); |
| list_super (fs->super); |
| list_bad_blocks (fs); |
| list_desc (fs); |
| } |
| ext2fs_close (fs); |
| exit (0); |
| } |