EXT2/3/4 File System Parsing

[pjrinaldi]

Implement Manual File System Parsing.

[pjrinaldi]

Working on initial implementation of recursively parsing ext2/3/4

[pjrinaldi]

Fixing some errors in the implementation which made assumptions.

[pjrinaldi]

initial implementation almost done, need to implement sub directory parsing.

[pjrinaldi]

initial testing of recursive sub directories and indirect blocks, and other features are working.

need to code cleanup, add a few properties to the fileinfo variable, write them to the properties file, and then adjust the curinode increment variable for the orphan directory so it doesn't duplicate...

also need to test the same images for ext3 and ext4, i.e. create empty ext3, ext4 images and copy the files from the ext2 images to teh ext3,4 images and test once the above is fixed.

Also need to see whether the deleted file has any layout values even though teh size was set to zero. as well as check on the other values for the deleted dir entry value...

Then i need to look at finding any orphan files and implementing that method.

[pjrinaldi]

Orphan could be searching inode tables for unallocated entries, which means I need the inode bitmaps as well as inode tables.

also can look in the super lock for orphan list.

[pjrinaldi]

ext2 is good minus orphans. working on implementing the necessary features for parsing ext3, and ext4. currently working on extents for ext4, since ext3 uses direct/indirect blocks.

[pjrinaldi]

implemented initial ext4 extents. need an example of extents which has a depth of 2 to 5 to test my code and also still need to implement dir entry listing using hashed b-tree rather than the linear implementation. Need an example of that since i'm still not sure about it's implementation.

[pjrinaldi]

initial implementation of directory hashing and ext4 extents as well as fs and file info properties are implemented. will fix as i test with different test images...

I don't think orphans exist with ext because of teh way it zero's out the starting block and block info in inode table.

[pjrinaldi]

started working on parsing ext2/3/4. will populate the strings for the extfs and extfsfile property templates first, then get volume properties next, and then parse the ext filesystem files/directories.

[pjrinaldi]

extfs properties are working. Need to start parsing the extfs files and their properties next.

[pjrinaldi]

working on initial parsing of extfs files/dirs and their properties.

[pjrinaldi]

initial extfs parsing is working.