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/*
* Copyright (c) 2021, Patrick Meyer <git@the-space.agency>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <Kernel/Devices/BlockDevice.h>
#include <Kernel/Devices/KCOVInstance.h>
namespace Kernel {
class KCOVDevice final : public BlockDevice {
friend class DeviceManagement;
public:
static HashMap<ProcessID, KCOVInstance*>* proc_instance;
static HashMap<ThreadID, KCOVInstance*>* thread_instance;
static NonnullRefPtr<KCOVDevice> must_create();
static void free_thread();
static void free_process();
// ^File
ErrorOr<Memory::Region*> mmap(Process&, OpenFileDescription&, Memory::VirtualRange const&, u64 offset, int prot, bool shared) override;
ErrorOr<NonnullRefPtr<OpenFileDescription>> open(int options) override;
protected:
KCOVDevice();
virtual StringView class_name() const override { return "KCOVDevice"sv; }
virtual bool can_read(OpenFileDescription const&, u64) const override final { return true; }
virtual bool can_write(OpenFileDescription const&, u64) const override final { return true; }
virtual void start_request(AsyncBlockDeviceRequest& request) override final { request.complete(AsyncDeviceRequest::Failure); }
virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override { return EINVAL; }
virtual ErrorOr<size_t> write(OpenFileDescription&, u64, UserOrKernelBuffer const&, size_t) override { return EINVAL; }
virtual ErrorOr<void> ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg) override;
};
}
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