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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.
This commit is contained in:
Andreas Kling 2021-01-20 23:11:17 +01:00
parent e279b45aed
commit 19d3f8cab7
48 changed files with 591 additions and 506 deletions

View file

@ -386,7 +386,7 @@ KResultOr<size_t> KeyboardDevice::read(FileDescription&, size_t, UserOrKernelBuf
return (ssize_t)data_bytes;
});
if (n < 0)
return KResult(n);
return KResult((ErrnoCode)-n);
ASSERT((size_t)n == sizeof(Event));
nread += sizeof(Event);