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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/FileSystem/AnonymousFile.h
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@ -46,8 +46,8 @@ private:
virtual String absolute_path(const FileDescription&) const override { return ":anonymous-file:"; }
virtual bool can_read(const FileDescription&, size_t) const override { return false; }
virtual bool can_write(const FileDescription&, size_t) const override { return false; }
virtual KResultOr<size_t> read(FileDescription&, size_t, UserOrKernelBuffer&, size_t) override { return KResult(-ENOTSUP); }
virtual KResultOr<size_t> write(FileDescription&, size_t, const UserOrKernelBuffer&, size_t) override { return KResult(-ENOTSUP); }
virtual KResultOr<size_t> read(FileDescription&, size_t, UserOrKernelBuffer&, size_t) override { return ENOTSUP; }
virtual KResultOr<size_t> write(FileDescription&, size_t, const UserOrKernelBuffer&, size_t) override { return ENOTSUP; }
explicit AnonymousFile(NonnullRefPtr<AnonymousVMObject>);