Andreas Kling 19d3f8cab7 Kernel+LibC: Turn errno codes into a strongly typed enum ...

..and allow implicit creation of KResult and KResultOr from ErrnoCode.
This means that kernel functions that return those types can finally
do "return EINVAL;" and it will just work.

There's a handful of functions that still deal with signed integers
that should be converted to return KResults.

2021-01-20 23:20:02 +01:00

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