ladybird/Kernel/FileSystem/SysFS/Subsystems/DeviceIdentifiers/SymbolicLinkDeviceComponent.h

/*
 * Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#pragma once

#include <AK/IntrusiveList.h>
#include <Kernel/FileSystem/SysFS/Component.h>
#include <Kernel/FileSystem/SysFS/Subsystems/DeviceIdentifiers/BlockDevicesDirectory.h>
#include <Kernel/FileSystem/SysFS/Subsystems/DeviceIdentifiers/CharacterDevicesDirectory.h>
#include <Kernel/KString.h>

namespace Kernel {

class SysFSDeviceIdentifiersDirectory;
class SysFSSymbolicLinkDeviceComponent final
    : public SysFSSymbolicLink
    , public LockWeakable<SysFSSymbolicLinkDeviceComponent> {
    friend class SysFSComponentRegistry;

public:
    static ErrorOr<NonnullRefPtr<SysFSSymbolicLinkDeviceComponent>> try_create(SysFSCharacterDevicesDirectory const& parent_directory, Device const& device, SysFSComponent const& pointed_component);
    static ErrorOr<NonnullRefPtr<SysFSSymbolicLinkDeviceComponent>> try_create(SysFSBlockDevicesDirectory const& parent_directory, Device const& device, SysFSComponent const& pointed_component);

    virtual StringView name() const override { return m_major_minor_formatted_device_name->view(); }
    bool is_block_device() const { return m_block_device; }

private:
    SysFSSymbolicLinkDeviceComponent(SysFSCharacterDevicesDirectory const& parent_directory, NonnullOwnPtr<KString> major_minor_formatted_device_name, Device const&, SysFSComponent const& pointed_component);
    SysFSSymbolicLinkDeviceComponent(SysFSBlockDevicesDirectory const& parent_directory, NonnullOwnPtr<KString> major_minor_formatted_device_name, Device const&, SysFSComponent const& pointed_component);

    IntrusiveListNode<SysFSSymbolicLinkDeviceComponent, NonnullRefPtr<SysFSSymbolicLinkDeviceComponent>> m_list_node;
    bool const m_block_device { false };
    NonnullOwnPtr<KString> m_major_minor_formatted_device_name;
};

}