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Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>

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We now use AK::Error and AK::ErrorOr<T> in both kernel and userspace!
This was a slightly tedious refactoring that took a long time, so it's
not unlikely that some bugs crept in.

Nevertheless, it does pass basic functionality testing, and it's just
real nice to finally see the same pattern in all contexts. :^)
This commit is contained in:
Andreas Kling 2021-11-08 00:51:39 +01:00
parent 7ee10c6926
commit 79fa9765ca
262 changed files with 2415 additions and 2600 deletions
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26
Kernel/Graphics/VirtIOGPU/FramebufferDevice.h
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@ -28,7 +28,7 @@ public:
FramebufferDevice(GraphicsAdapter const&, ScanoutID);
virtual ~FramebufferDevice() override;
virtual KResult try_to_initialize() override { return KSuccess; }
virtual ErrorOr<void> try_to_initialize() override { return {}; }
virtual void deactivate_writes();
virtual void activate_writes();
@ -50,17 +50,17 @@ private:
virtual bool flushing_support() const override { return false; }
virtual bool partial_flushing_support() const override { return true; }
virtual size_t heads_count() const override { return 1; }
virtual KResultOr<size_t> buffer_length(size_t head) const override;
virtual KResultOr<size_t> pitch(size_t head) const override;
virtual KResultOr<size_t> height(size_t head) const override;
virtual KResultOr<size_t> width(size_t head) const override;
virtual KResultOr<size_t> vertical_offset(size_t head) const override;
virtual KResultOr<bool> vertical_offseted(size_t head) const override;
virtual ErrorOr<size_t> buffer_length(size_t head) const override;
virtual ErrorOr<size_t> pitch(size_t head) const override;
virtual ErrorOr<size_t> height(size_t head) const override;
virtual ErrorOr<size_t> width(size_t head) const override;
virtual ErrorOr<size_t> vertical_offset(size_t head) const override;
virtual ErrorOr<bool> vertical_offseted(size_t head) const override;
virtual KResult set_head_resolution(size_t head, size_t width, size_t height, size_t pitch) override;
virtual KResult set_head_buffer(size_t head, bool second_buffer) override;
virtual KResult flush_head_buffer(size_t head) override;
virtual KResult flush_rectangle(size_t head, FBRect const&) override;
virtual ErrorOr<void> set_head_resolution(size_t head, size_t width, size_t height, size_t pitch) override;
virtual ErrorOr<void> set_head_buffer(size_t head, bool second_buffer) override;
virtual ErrorOr<void> flush_head_buffer(size_t head) override;
virtual ErrorOr<void> flush_rectangle(size_t head, FBRect const&) override;
void flush_dirty_window(Protocol::Rect const&, Buffer&);
void transfer_framebuffer_data_to_host(Protocol::Rect const&, Buffer&);
@ -73,11 +73,11 @@ private:
void clear_to_black(Buffer&);
KResult create_framebuffer();
ErrorOr<void> create_framebuffer();
void create_buffer(Buffer&, size_t, size_t);
void set_buffer(int);
virtual KResultOr<Memory::Region*> mmap(Process&, OpenFileDescription&, Memory::VirtualRange const&, u64 offset, int prot, bool shared) override;
virtual ErrorOr<Memory::Region*> mmap(Process&, OpenFileDescription&, Memory::VirtualRange const&, u64 offset, int prot, bool shared) override;
static bool is_valid_buffer_index(int buffer_index)
{