112 lines
3.8 KiB
C#
112 lines
3.8 KiB
C#
//
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// Copyright (c) 2008-2011, Kenneth Bell
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.IO;
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using DiscUtils.Partitions;
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using DiscUtils.Streams;
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namespace DiscUtils.ApplePartitionMap
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{
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internal sealed class PartitionMapEntry : PartitionInfo, IByteArraySerializable
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{
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private readonly Stream _diskStream;
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public uint BootBlock;
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public uint BootBytes;
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public uint Flags;
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public uint LogicalBlocks;
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public uint LogicalBlockStart;
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public uint MapEntries;
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public string Name;
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public uint PhysicalBlocks;
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public uint PhysicalBlockStart;
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public ushort Signature;
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public string Type;
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public PartitionMapEntry(Stream diskStream)
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{
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_diskStream = diskStream;
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}
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public override byte BiosType
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{
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get { return 0xAF; }
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}
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public override long FirstSector
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{
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get { return PhysicalBlockStart; }
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}
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public override Guid GuidType
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{
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get { return Guid.Empty; }
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}
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public override long LastSector
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{
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get { return PhysicalBlockStart + PhysicalBlocks - 1; }
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}
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public override string TypeAsString
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{
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get { return Type; }
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}
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internal override PhysicalVolumeType VolumeType
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{
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get { return PhysicalVolumeType.ApplePartition; }
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}
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public int Size
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{
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get { return 512; }
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}
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public int ReadFrom(byte[] buffer, int offset)
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{
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Signature = EndianUtilities.ToUInt16BigEndian(buffer, offset + 0);
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MapEntries = EndianUtilities.ToUInt32BigEndian(buffer, offset + 4);
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PhysicalBlockStart = EndianUtilities.ToUInt32BigEndian(buffer, offset + 8);
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PhysicalBlocks = EndianUtilities.ToUInt32BigEndian(buffer, offset + 12);
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Name = EndianUtilities.BytesToString(buffer, offset + 16, 32).TrimEnd('\0');
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Type = EndianUtilities.BytesToString(buffer, offset + 48, 32).TrimEnd('\0');
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LogicalBlockStart = EndianUtilities.ToUInt32BigEndian(buffer, offset + 80);
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LogicalBlocks = EndianUtilities.ToUInt32BigEndian(buffer, offset + 84);
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Flags = EndianUtilities.ToUInt32BigEndian(buffer, offset + 88);
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BootBlock = EndianUtilities.ToUInt32BigEndian(buffer, offset + 92);
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BootBytes = EndianUtilities.ToUInt32BigEndian(buffer, offset + 96);
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return 512;
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}
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public void WriteTo(byte[] buffer, int offset)
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{
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throw new NotImplementedException();
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}
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public override SparseStream Open()
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{
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return new SubStream(_diskStream, PhysicalBlockStart * 512, PhysicalBlocks * 512);
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}
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}
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} |