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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <Kernel/Devices/CharacterDevice.h>
namespace Kernel {
class ZeroDevice final : public CharacterDevice {
AK_MAKE_ETERNAL
friend class DeviceManagement;
public:
static NonnullRefPtr<ZeroDevice> must_create();
virtual ~ZeroDevice() override;
private:
ZeroDevice();
// ^CharacterDevice
virtual KResultOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
virtual KResultOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
virtual bool can_read(const OpenFileDescription&, size_t) const override;
virtual bool can_write(const OpenFileDescription&, size_t) const override { return true; }
virtual StringView class_name() const override { return "ZeroDevice"sv; }
};
}
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