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Special Forums Hardware Filesystems, Disks and Memory Recreating a deleted hardlink to a file if I know the inode number Post 302223686 by Perderabo on Monday 11th of August 2008 06:41:49 AM
Old 08-11-2008
I don't think that you're breaking the rules with a 2 week bump. Hard links are only possible within a file system. You can't can't make a hard link from one file system into another file system. /proc is a separate file system and you can't create links there at all. An extra link in /proc won't help you anyway. Forget /proc. It goes nowhere.

The only tool with a shot at this is fsdb, but I don't know fsdb well enough to tell you the precise steps. Call this plan A. The general steps I would try are:

1 create some file
2 create an extra link to the file with very bizarre name (more easily found and easy to sure you have the right one)
3 hit the power switch to drop power to the box
4 come up in single user mode and run fsdb
5 edit the directory entry to point to my file
6 edit the inodes to increment and decrement the usuage counts
7 run fsck

And I would practice on a test system before I tried it for real.

If I couldn't get it to work, plan B:

1 drop power
2 ship the disk to a data recovery specialist with experts who can implement plan A.
 

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FFIND(1)						      General Commands Manual							  FFIND(1)

NAME
ffind - Finds the name of the file or directory using a given inode SYNOPSIS
ffind [-aduvV] [-f fstype] [-i imgtype] [-o imgoffset] [-b dev_sector_size] image inode DESCRIPTION
ffind finds the names of files or directories that are allocated to inode on disk image image. By default it only will only return the first name it finds. With some file systems, this will find deleted file names. ARGUMENTS
image [images] One (or more if split) disk or partition images whose format is given with '-i'. inode Integer of inode to find. The optional arguments are: -a Find all occurrences of inode. -d Find deleted entries only. -f fstype Identify the file system type of the image. Use '-f list' to list the supported file system types. If not given, autodetection methods are used. -u Find undeleted entries only. -i imgtype Identify the type of image file, such as raw or split. Use '-i list' to list the supported types. If not given, autodetection methods are used. -o imgoffset The sector offset where the file system starts in the image. -b dev_sector_size The size, in bytes, of the underlying device sectors. If not given, the value in the image format is used (if it exists) or 512-bytes is assumed. -v Verbose output to stderr. -V Display version. This program searches all directory entries looking for the given inode. This is useful when an inode has been identified from a disk unit address using ifind(1). EXAMPLE
# ffind -a image 212 SEE ALSO
ifind(1) AUTHOR
Brian Carrier <carrier at sleuthkit dot org> Send documentation updates to <doc-updates at sleuthkit dot org> FFIND(1)
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