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Kernel: Make File::write() and File::read() return KResultOr<size_t>
Instead of returning a ssize_t where negative values mean error, we now return KResultOr<size_t> and use the error state to report errors exclusively.
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58 changed files with 223 additions and 229 deletions
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@ -38,8 +38,8 @@ public:
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private:
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// ^CharacterDevice
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virtual ssize_t read(FileDescription&, size_t, u8*, ssize_t) override;
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virtual ssize_t write(FileDescription&, size_t, const u8*, ssize_t) override;
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virtual KResultOr<size_t> read(FileDescription&, size_t, u8*, size_t) override;
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virtual KResultOr<size_t> write(FileDescription&, size_t, const u8*, size_t) override;
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virtual bool can_read(const FileDescription&, size_t) const override;
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virtual bool can_write(const FileDescription&, size_t) const override { return true; }
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virtual const char* class_name() const override { return "FullDevice"; }
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