mirror of
https://github.com/RGBCube/serenity
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5adf5f4dee
There is no use to create a temporary String of a char const* to just cast it to a StringView on SysFSComponent construction again. Also this could have lead to a UAF bug.
50 lines
1.5 KiB
C++
50 lines
1.5 KiB
C++
/*
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* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/String.h>
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#include <AK/Vector.h>
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#include <Kernel/Bus/PCI/Definitions.h>
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#include <Kernel/FileSystem/SysFS.h>
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namespace Kernel::PCI {
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class PCIBusSysFSDirectory final : public SysFSDirectory {
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public:
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static void initialize();
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private:
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PCIBusSysFSDirectory();
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};
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class PCIDeviceSysFSDirectory final : public SysFSDirectory {
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public:
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static NonnullRefPtr<PCIDeviceSysFSDirectory> create(const SysFSDirectory&, Address);
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const Address& address() const { return m_address; }
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private:
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PCIDeviceSysFSDirectory(const SysFSDirectory&, Address);
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Address m_address;
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};
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class PCIDeviceAttributeSysFSComponent : public SysFSComponent {
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public:
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static NonnullRefPtr<PCIDeviceAttributeSysFSComponent> create(StringView name, const PCIDeviceSysFSDirectory& device, PCI::RegisterOffset offset, size_t field_bytes_width);
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virtual ErrorOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer&, OpenFileDescription*) const override;
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virtual ~PCIDeviceAttributeSysFSComponent() {};
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protected:
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ErrorOr<NonnullOwnPtr<KBuffer>> try_to_generate_buffer() const;
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PCIDeviceAttributeSysFSComponent(StringView name, const PCIDeviceSysFSDirectory& device, PCI::RegisterOffset offset, size_t field_bytes_width);
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NonnullRefPtr<PCIDeviceSysFSDirectory> m_device;
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PCI::RegisterOffset m_offset;
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size_t m_field_bytes_width;
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};
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}
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