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be1c5c6b9f
This commit creates a new library LibPartition which will contain partition related code sharable between Kernel and Userland and includes DiskPartitionMetadata as the first shared class.
99 lines
2.4 KiB
C++
99 lines
2.4 KiB
C++
/*
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* Copyright (c) 2020, 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 <LibPartition/DiskPartitionMetadata.h>
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namespace Partition {
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DiskPartitionMetadata::PartitionType::PartitionType(u8 partition_type)
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{
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m_partition_type[0] = partition_type;
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}
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DiskPartitionMetadata::PartitionType::PartitionType(Array<u8, 16> partition_type)
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: m_partition_type_is_uuid(true)
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{
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m_partition_type.span().overwrite(0, partition_type.data(), partition_type.size());
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}
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UUID DiskPartitionMetadata::PartitionType::to_uuid() const
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{
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VERIFY(is_uuid());
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return m_partition_type;
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}
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u8 DiskPartitionMetadata::PartitionType::to_byte_indicator() const
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{
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VERIFY(!is_uuid());
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return m_partition_type[0];
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}
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bool DiskPartitionMetadata::PartitionType::is_uuid() const
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{
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return m_partition_type_is_uuid;
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}
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bool DiskPartitionMetadata::PartitionType::is_valid() const
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{
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return !all_of(m_partition_type, [](auto const octet) { return octet == 0; });
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}
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DiskPartitionMetadata::DiskPartitionMetadata(u64 start_block, u64 end_block, u8 partition_type)
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: m_start_block(start_block)
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, m_end_block(end_block)
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, m_type(partition_type)
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{
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VERIFY(m_type.is_valid());
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}
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DiskPartitionMetadata::DiskPartitionMetadata(u64 start_block, u64 end_block, Array<u8, 16> partition_type)
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: m_start_block(start_block)
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, m_end_block(end_block)
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, m_type(partition_type)
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{
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VERIFY(m_type.is_valid());
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}
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DiskPartitionMetadata::DiskPartitionMetadata(u64 start_block, u64 end_block, Array<u8, 16> partition_type, UUID unique_guid, u64 special_attributes)
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: m_start_block(start_block)
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, m_end_block(end_block)
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, m_type(partition_type)
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, m_unique_guid(unique_guid)
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, m_attributes(special_attributes)
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{
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VERIFY(m_type.is_valid());
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VERIFY(!m_unique_guid.is_zero());
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}
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DiskPartitionMetadata DiskPartitionMetadata::offset(u64 blocks_count) const
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{
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return { blocks_count + m_start_block, blocks_count + m_end_block, m_type.m_partition_type };
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}
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u64 DiskPartitionMetadata::start_block() const
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{
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return m_start_block;
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}
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u64 DiskPartitionMetadata::end_block() const
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{
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return m_end_block;
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}
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Optional<u64> DiskPartitionMetadata::special_attributes() const
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{
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if (m_attributes == 0)
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return {};
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return m_attributes;
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}
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DiskPartitionMetadata::PartitionType const& DiskPartitionMetadata::type() const
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{
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return m_type;
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}
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const UUID& DiskPartitionMetadata::unique_guid() const
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{
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return m_unique_guid;
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}
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}
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