c3eaa73113
This enum was created to help put distinction between the commandset and the interface type, as ATAPI devices are simply ATA devices utilizing the SCSI commandset. Because we don't support ATAPI, putting such type of distinction is pointless, so let's remove this for now.
71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
/*
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* Copyright (c) 2022, 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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#include <Kernel/Bus/PCI/API.h>
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#include <Kernel/Bus/PCI/Access.h>
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#include <Kernel/Debug.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Devices/Storage/DeviceAttribute.h>
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#include <Kernel/Sections.h>
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namespace Kernel {
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StringView StorageDeviceAttributeSysFSComponent::name() const
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{
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switch (m_type) {
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case Type::EndLBA:
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return "last_lba"sv;
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case Type::SectorSize:
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return "sector_size"sv;
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case Type::CommandSet:
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return "command_set"sv;
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default:
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VERIFY_NOT_REACHED();
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}
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}
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NonnullRefPtr<StorageDeviceAttributeSysFSComponent> StorageDeviceAttributeSysFSComponent::must_create(StorageDeviceSysFSDirectory const& device_directory, Type type)
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{
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return adopt_ref(*new (nothrow) StorageDeviceAttributeSysFSComponent(device_directory, type));
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}
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StorageDeviceAttributeSysFSComponent::StorageDeviceAttributeSysFSComponent(StorageDeviceSysFSDirectory const& device_directory, Type type)
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: SysFSComponent()
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, m_device(device_directory.device({}))
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, m_type(type)
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{
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}
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ErrorOr<size_t> StorageDeviceAttributeSysFSComponent::read_bytes(off_t offset, size_t count, UserOrKernelBuffer& buffer, OpenFileDescription*) const
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{
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auto blob = TRY(try_to_generate_buffer());
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if ((size_t)offset >= blob->size())
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return 0;
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ssize_t nread = min(static_cast<off_t>(blob->size() - offset), static_cast<off_t>(count));
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TRY(buffer.write(blob->data() + offset, nread));
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return nread;
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}
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ErrorOr<NonnullOwnPtr<KBuffer>> StorageDeviceAttributeSysFSComponent::try_to_generate_buffer() const
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{
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OwnPtr<KString> value;
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switch (m_type) {
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case Type::EndLBA:
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value = TRY(KString::formatted("{}", m_device->max_addressable_block()));
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break;
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case Type::SectorSize:
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value = TRY(KString::formatted("{}", m_device->block_size()));
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break;
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case Type::CommandSet:
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value = TRY(KString::formatted("{}", m_device->command_set_to_string_view()));
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break;
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default:
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VERIFY_NOT_REACHED();
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}
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return KBuffer::try_create_with_bytes("SysFS StorageDeviceAttributeComponent buffer"sv, value->view().bytes());
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}
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}
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