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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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 RandomDevice final : public CharacterDevice {
14 friend class DeviceManagement;
15
16public:
17 static NonnullLockRefPtr<RandomDevice> must_create();
18 virtual ~RandomDevice() override;
19
20private:
21 RandomDevice();
22
23 // ^Device
24 virtual bool is_openable_by_jailed_processes() const override { return true; }
25
26 // ^CharacterDevice
27 virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
28 virtual ErrorOr<size_t> write(OpenFileDescription&, u64, UserOrKernelBuffer const&, size_t) override;
29 virtual bool can_read(OpenFileDescription const&, u64) const override;
30 virtual bool can_write(OpenFileDescription const&, u64) const override { return true; }
31 virtual StringView class_name() const override { return "RandomDevice"sv; }
32};
33
34}