96 lines
3.1 KiB
C#
96 lines
3.1 KiB
C#
using System;
|
|
using System.Collections.Generic;
|
|
using System.IO;
|
|
using System.Threading;
|
|
using System.Threading.Tasks;
|
|
using Duplicati.Proprietary.DiskImage.Disk;
|
|
using Duplicati.Proprietary.DiskImage.General;
|
|
|
|
namespace Duplicati.Proprietary.DiskImage.Partition;
|
|
|
|
/// <summary>
|
|
/// Represents an unknown partition table type.
|
|
/// Treats the entire disk as a single partition when the partition table type cannot be determined.
|
|
/// </summary>
|
|
internal class UnknownPartitionTable : IPartitionTable
|
|
{
|
|
/// <summary>
|
|
/// The raw disk associated with this partition table, if available. May be null if no disk access is possible.
|
|
/// </summary>
|
|
private readonly IRawDisk? m_rawDisk;
|
|
|
|
/// <summary>
|
|
/// Indicates whether this instance has been disposed. After disposal, the instance should not be used.
|
|
/// </summary>
|
|
private bool m_disposed = false;
|
|
|
|
/// <inheritdoc />
|
|
public IRawDisk? RawDisk => m_rawDisk;
|
|
|
|
/// <inheritdoc />
|
|
public PartitionTableType TableType => PartitionTableType.Unknown;
|
|
|
|
/// <summary>
|
|
/// Initializes a new instance of the <see cref="UnknownPartitionTable"/> class.
|
|
/// </summary>
|
|
/// <param name="disk">The raw disk, or null if not available.</param>
|
|
public UnknownPartitionTable(IRawDisk? disk)
|
|
{
|
|
m_rawDisk = disk;
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public async IAsyncEnumerable<IPartition> EnumeratePartitions([System.Runtime.CompilerServices.EnumeratorCancellation] CancellationToken cancellationToken)
|
|
{
|
|
var partition = await GetPartitionAsync(1, cancellationToken).ConfigureAwait(false);
|
|
if (partition != null)
|
|
yield return partition;
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public Task<IPartition?> GetPartitionAsync(int partitionNumber, CancellationToken cancellationToken)
|
|
{
|
|
if (partitionNumber != 1 || m_rawDisk == null)
|
|
return Task.FromResult<IPartition?>(null);
|
|
|
|
return Task.FromResult<IPartition?>(new BasePartition
|
|
{
|
|
PartitionNumber = 1,
|
|
Type = PartitionType.Unknown,
|
|
PartitionTable = this,
|
|
StartOffset = 0,
|
|
Size = m_rawDisk.Size,
|
|
Name = null,
|
|
FilesystemType = FileSystemType.Unknown,
|
|
VolumeGuid = null,
|
|
RawDisk = m_rawDisk,
|
|
StartingLba = 0,
|
|
EndingLba = 0,
|
|
Attributes = 0
|
|
});
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public Task<Stream> GetProtectiveMbrAsync(CancellationToken cancellationToken)
|
|
{
|
|
throw new NotSupportedException("Unknown partition table does not have a protective MBR.");
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public Task<Stream> GetPartitionTableDataAsync(CancellationToken cancellationToken)
|
|
{
|
|
// For unknown partition tables, return empty data
|
|
// The disk will be treated as one big partition with unknown filesystem
|
|
return Task.FromResult<Stream>(new MemoryStream(Array.Empty<byte>(), writable: false));
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public void Dispose()
|
|
{
|
|
if (m_disposed)
|
|
return;
|
|
|
|
m_disposed = true;
|
|
}
|
|
}
|