Milan Broz e91b90b8c9 Fix access to unaligned hidden TrueCrypt header. ...

On native 4k-sector device the old hidden header is not aligned
with hw sector size and derect-io access with SEEK_END fails.

Let's extend blockwise functions to support a negative offset
and use the same logic as normal unaligned writes.

Fixes problem mentioned in
https://gitlab.com/cryptsetup/cryptsetup/merge_requests/18

2017-04-04 16:04:49 +02:00

30 KiB

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