Category : Recently Uploaded Files
Archive   : EXT2TOOL.ZIP
Filename : CHK_DESC.C

 
Output of file : CHK_DESC.C contained in archive : EXT2TOOL.ZIP
/*
* check_desc.c --- Check the group descriptors of an ext2 filesystem
*
* Copyright (C) 1993, 1994 Theodore Ts'o. This file may be redistributed
* under the terms of the GNU Public License.
*/

#include
#include
#include
#include
#include
#include
#include
#include
#include

#include

#include "ext2fs.h"

/*
* This routine sanity checks the group descriptors
*/
errcode_t ext2fs_check_desc(ext2_filsys fs)
{
int i;
int block = fs->super->s_first_data_block;
int next, inode_blocks_per_group;

EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);

inode_blocks_per_group = fs->super->s_inodes_per_group /
EXT2_INODES_PER_BLOCK (fs->super);

for (i = 0; i < fs->group_desc_count; i++) {
next = block + fs->super->s_blocks_per_group;
/*
* Check to make sure block bitmap for group is
* located within the group.
*/
if (fs->group_desc[i].bg_block_bitmap < block ||
fs->group_desc[i].bg_block_bitmap >= next)
return EXT2_ET_GDESC_BAD_BLOCK_MAP;
/*
* Check to make sure inode bitmap for group is
* located within the group
*/
if (fs->group_desc[i].bg_inode_bitmap < block ||
fs->group_desc[i].bg_inode_bitmap >= next)
return EXT2_ET_GDESC_BAD_INODE_MAP;
/*
* Check to make sure inode table for group is located
* within the group
*/
if (fs->group_desc[i].bg_inode_table < block ||
fs->group_desc[i].bg_inode_table+inode_blocks_per_group >=
next)
return EXT2_ET_GDESC_BAD_INODE_TABLE;

block = next;
}
return 0;
}


  3 Responses to “Category : Recently Uploaded Files
Archive   : EXT2TOOL.ZIP
Filename : CHK_DESC.C
”

  1. Daniel says:
    January 27, 2013 at 3:59 pm

    Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. Joshie says:
    March 18, 2014 at 4:57 pm

    This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. DiskingRound says:
    January 14, 2015 at 10:57 pm

    But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/