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Serenity Operating System
1/*
2 * Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#pragma once
8
9#include <Kernel/Devices/CharacterDevice.h>
10
11namespace Kernel {
12
13class DeviceControlDevice final : public CharacterDevice {
14 friend class DeviceManagement;
15
16public:
17 static NonnullLockRefPtr<DeviceControlDevice> must_create();
18 virtual ~DeviceControlDevice() override;
19
20private:
21 DeviceControlDevice();
22
23 // ^CharacterDevice
24 virtual ErrorOr<void> ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg) override;
25 virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
26 virtual ErrorOr<size_t> write(OpenFileDescription&, u64, UserOrKernelBuffer const&, size_t) override { return Error::from_errno(ENOTSUP); }
27 virtual bool can_read(OpenFileDescription const&, u64) const override;
28 virtual bool can_write(OpenFileDescription const&, u64) const override { return false; }
29 virtual StringView class_name() const override { return "DeviceControlDevice"sv; }
30};
31
32}