Please support checksums

[ytrezq]

I know this would introduce a massive need for rewriting everything.
But without computing checksums, fuzzing isn’t really usefull for lot of filesystems.

I don’t have enough knowlwedge in filesytems to do it.

[stevegrubb]

Hi, could you explain things further? fsfuzzer tampers with an image on purpose. So, I'm not sure what you are wanting check summed or how it would be useful. Thanks.

[ytrezq]

@stevegrubb : Oh, it’s simple. Most journalled filesystems also protect their data structure with checksums. If the computed checksum doesn’t match the result, then the data corresponding to that checksum isn’t parsed.

So the aim is to fuzz the filesystems while still ensuring the checksums match corrupted data. Oracle is claiming to did it but they don’t provide their patches.