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89 lines
3.5 KiB
C#
89 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 : AO-DOS file system plugin.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Identifies the AO-DOS file system and shows information.
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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 © 2011-2026 Natalia Portillo
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// ****************************************************************************/
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using System.Runtime.InteropServices;
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namespace Aaru.Filesystems;
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// Information has been extracted looking at available disk images
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// This may be missing fields, or not, I don't know russian so any help is appreciated
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public sealed partial class AODOS
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{
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#region Nested type: BootBlock
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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readonly struct BootBlock
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{
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/// <summary>A NOP opcode</summary>
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public readonly byte nop;
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/// <summary>A branch to real bootloader</summary>
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public readonly ushort branch;
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/// <summary>Unused</summary>
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public readonly byte unused;
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/// <summary>" AO-DOS "</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
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public readonly byte[] identifier;
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/// <summary>Volume label</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 12)]
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public readonly byte[] volumeLabel;
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/// <summary>How many files are present in disk</summary>
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public readonly ushort files;
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/// <summary>How many sectors are used</summary>
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public readonly ushort usedSectors;
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}
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#endregion
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#region Nested type: DirectoryEntry
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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readonly struct DirectoryEntry
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{
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/// <summary>If more than 0, entry is a directory and this is its number</summary>
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public readonly byte directoryNumber;
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/// <summary>Directory number file belongs to (0 - root)</summary>
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public readonly byte directory;
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/// <summary>File name 14. symbols in ASCII KOI8</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 14)]
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public readonly byte[] filename;
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/// <summary>Block number</summary>
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public readonly ushort blockNumber;
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/// <summary>Length in blocks</summary>
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public readonly ushort blocks;
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/// <summary>Address</summary>
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public readonly ushort address;
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/// <summary>Length</summary>
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public readonly ushort length;
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}
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#endregion
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} |