chovy-sign/CHOVY-SIGN/DiscUtils/Iso9660/BootVolumeDescriptor.cs

56 lines
2.1 KiB
C#

//
// Copyright (c) 2008-2011, Kenneth Bell
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
using DiscUtils.Streams;
namespace DiscUtils.Iso9660
{
internal class BootVolumeDescriptor : BaseVolumeDescriptor
{
public const string ElToritoSystemIdentifier = "EL TORITO SPECIFICATION";
public BootVolumeDescriptor(uint catalogSector)
: base(VolumeDescriptorType.Boot, 1)
{
CatalogSector = catalogSector;
}
public BootVolumeDescriptor(byte[] src, int offset)
: base(src, offset)
{
SystemId = EndianUtilities.BytesToString(src, offset + 0x7, 0x20).TrimEnd('\0');
CatalogSector = EndianUtilities.ToUInt32LittleEndian(src, offset + 0x47);
}
public uint CatalogSector { get; }
public string SystemId { get; }
internal override void WriteTo(byte[] buffer, int offset)
{
base.WriteTo(buffer, offset);
EndianUtilities.StringToBytes(ElToritoSystemIdentifier, buffer, offset + 7, 0x20);
EndianUtilities.WriteBytesLittleEndian(CatalogSector, buffer, offset + 0x47);
}
}
}