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87 lines
3.5 KiB
C#
87 lines
3.5 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : Structs.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Disk image plugins.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Contains structures for IBM SaveDskF disk images.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2025 Natalia Portillo
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// ****************************************************************************/
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using System.Runtime.InteropServices;
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namespace Aaru.Images;
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public sealed partial class SaveDskF
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{
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#region Nested type: Header
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct Header
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{
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/// <summary>0x00 magic number</summary>
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public ushort magic;
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/// <summary>0x02 media type from FAT</summary>
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public readonly ushort mediaType;
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/// <summary>0x04 bytes per sector</summary>
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public ushort sectorSize;
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/// <summary>0x06 sectors per cluster - 1</summary>
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public readonly byte clusterMask;
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/// <summary>0x07 log2(cluster / sector)</summary>
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public readonly byte clusterShift;
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/// <summary>0x08 reserved sectors</summary>
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public readonly ushort reservedSectors;
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/// <summary>0x0A copies of FAT</summary>
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public readonly byte fatCopies;
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/// <summary>0x0B entries in root directory</summary>
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public readonly ushort rootEntries;
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/// <summary>0x0D first cluster</summary>
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public readonly ushort firstCluster;
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/// <summary>0x0F clusters present in image</summary>
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public readonly ushort clustersCopied;
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/// <summary>0x11 sectors per FAT</summary>
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public readonly byte sectorsPerFat;
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/// <summary>0x12 sector number of root directory</summary>
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public readonly ushort rootDirectorySector;
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/// <summary>0x14 sum of all image bytes</summary>
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public uint checksum;
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/// <summary>0x18 cylinders</summary>
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public ushort cylinders;
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/// <summary>0x1A heads</summary>
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public ushort heads;
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/// <summary>0x1C sectors per track</summary>
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public ushort sectorsPerTrack;
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/// <summary>0x1E always zero</summary>
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public readonly uint padding;
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/// <summary>0x22 sectors present in image</summary>
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public ushort sectorsCopied;
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/// <summary>0x24 offset to comment</summary>
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public ushort commentOffset;
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/// <summary>0x26 offset to data</summary>
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public ushort dataOffset;
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}
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#endregion
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} |