Return error when record is too short #5
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Fixes #2
I'm not entirely sure this is the best way to fix this, but the check needed to have been done up in NtfsFile because everything below it (in the process of getting the signature) is infalliable.
I also don't like the
vec![0; record_size]
there, looks like a malformed file system can cause an OOM. Granted, it's a u32 so that might still be fine on some platforms, but definitely not on embedded. Best thing to do there would be to validate that the stream length is actually long enough to fit the given record size