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Kernel+LibC: Turn errno codes into a strongly typed enum

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..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
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4
Kernel/Devices/SerialDevice.cpp
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@ -59,7 +59,7 @@ KResultOr<size_t> SerialDevice::read(FileDescription&, size_t, UserOrKernelBuffe
return (ssize_t)data_size;
});
if (nwritten < 0)
return KResult(nwritten);
return KResult((ErrnoCode)-nwritten);
return size;
}
@ -83,7 +83,7 @@ KResultOr<size_t> SerialDevice::write(FileDescription&, size_t, const UserOrKern
return (ssize_t)data_size;
});
if (nread < 0)
return KResult(nread);
return KResult((ErrnoCode)-nread);
return (size_t)nread;
}