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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 {
AK_MAKE_ETERNAL
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
KResultOr<Memory::Region*> mmap(Process&, FileDescription&, Memory::VirtualRange const&, u64 offset, int prot, bool shared) override;
KResultOr<NonnullRefPtr<FileDescription>> open(int options) override;
// ^Device
virtual mode_t required_mode() const override { return 0660; }
virtual String device_name() const override;
protected:
virtual StringView class_name() const override { return "KCOVDevice"; }
virtual bool can_read(const FileDescription&, size_t) const override final { return true; }
virtual bool can_write(const FileDescription&, size_t) const override final { return true; }
virtual void start_request(AsyncBlockDeviceRequest& request) override final { request.complete(AsyncDeviceRequest::Failure); }
virtual KResultOr<size_t> read(FileDescription&, u64, UserOrKernelBuffer&, size_t) override { return EINVAL; }
virtual KResultOr<size_t> write(FileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return EINVAL; }
virtual KResult ioctl(FileDescription&, unsigned request, Userspace<void*> arg) override;
private:
KCOVDevice();
};
}
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