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https://github.com/RGBCube/serenity
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f5de4f24b2
Instead of doing so in the constructor, let's do immediately after the constructor, so we can safely pass a reference of a Device, so the SysFSDeviceComponent constructor can use that object to identify whether it's a block device or a character device. This allows to us to not hold a device in SysFSDeviceComponent with a RefPtr. Also, we also call the before_removing method in both SlavePTY::unref and File::unref, so because Device has that method being overrided, it can ensure the device is removed always cleanly.
57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/StringView.h>
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#include <Kernel/FileSystem/OpenFileDescription.h>
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#include <Kernel/Sections.h>
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#include <Kernel/Storage/IDEChannel.h>
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#include <Kernel/Storage/IDEController.h>
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#include <Kernel/Storage/PATADiskDevice.h>
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namespace Kernel {
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UNMAP_AFTER_INIT NonnullRefPtr<PATADiskDevice> PATADiskDevice::create(const IDEController& controller, IDEChannel& channel, DriveType type, InterfaceType interface_type, u16 capabilities, u64 max_addressable_block)
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{
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auto device_or_error = try_create_device<PATADiskDevice>(controller, channel, type, interface_type, capabilities, max_addressable_block);
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// FIXME: Find a way to propagate errors
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VERIFY(!device_or_error.is_error());
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return device_or_error.release_value();
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}
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UNMAP_AFTER_INIT PATADiskDevice::PATADiskDevice(const IDEController& controller, IDEChannel& channel, DriveType type, InterfaceType interface_type, u16 capabilities, u64 max_addressable_block)
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: StorageDevice(controller, 512, max_addressable_block)
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, m_capabilities(capabilities)
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, m_channel(channel)
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, m_drive_type(type)
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, m_interface_type(interface_type)
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{
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}
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UNMAP_AFTER_INIT PATADiskDevice::~PATADiskDevice()
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{
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}
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StringView PATADiskDevice::class_name() const
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{
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return "PATADiskDevice";
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}
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void PATADiskDevice::start_request(AsyncBlockDeviceRequest& request)
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{
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m_channel->start_request(request, is_slave(), m_capabilities);
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}
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String PATADiskDevice::storage_name() const
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{
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return String::formatted("hd{:c}", 'a' + minor());
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}
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bool PATADiskDevice::is_slave() const
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{
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return m_drive_type == DriveType::Slave;
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}
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}
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