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https://github.com/RGBCube/serenity
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4a9c18afb9
Dr. POSIX really calls these "open file description", not just "file description", so let's call them exactly that. :^)
34 lines
1 KiB
C++
34 lines
1 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <Kernel/Devices/CharacterDevice.h>
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namespace Kernel {
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class RandomDevice final : public CharacterDevice {
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AK_MAKE_ETERNAL
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public:
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static NonnullRefPtr<RandomDevice> must_create();
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virtual ~RandomDevice() override;
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// ^Device
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virtual mode_t required_mode() const override { return 0666; }
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virtual String device_name() const override { return "random"; }
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private:
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RandomDevice();
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// ^CharacterDevice
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virtual KResultOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
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virtual KResultOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
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virtual bool can_read(const OpenFileDescription&, size_t) const override;
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virtual bool can_write(const OpenFileDescription&, size_t) const override { return true; }
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virtual StringView class_name() const override { return "RandomDevice"; }
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};
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}
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