mirror of
https://github.com/RGBCube/serenity
synced 2025-07-10 07:57:35 +00:00
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++
/*
|
|
* 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 RandomDevice final : public CharacterDevice {
|
|
AK_MAKE_ETERNAL
|
|
public:
|
|
static NonnullRefPtr<RandomDevice> must_create();
|
|
virtual ~RandomDevice() override;
|
|
|
|
// ^Device
|
|
virtual mode_t required_mode() const override { return 0666; }
|
|
virtual String device_name() const override { return "random"; }
|
|
|
|
private:
|
|
RandomDevice();
|
|
|
|
// ^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 "RandomDevice"; }
|
|
};
|
|
|
|
}
|