// /***************************************************************************
// Aaru Data Preservation Suite
// ----------------------------------------------------------------------------
//
// Filename       : Structs.cs
// Author(s)      : Natalia Portillo <claunia@claunia.com>
//
// Component      : Disk image plugins.
//
// --[ Description ] ----------------------------------------------------------
//
//     Contains structures for VMware disk images.
//
// --[ License ] --------------------------------------------------------------
//
//     This library is free software; you can redistribute it and/or modify
//     it under the terms of the GNU Lesser General Public License as
//     published by the Free Software Foundation; either version 2.1 of the
//     License, or (at your option) any later version.
//
//     This library is distributed in the hope that it will be useful, but
//     WITHOUT ANY WARRANTY; without even the implied warranty of
//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
//     Lesser General Public License for more details.
//
//     You should have received a copy of the GNU Lesser General Public
//     License along with this library; if not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2011-2021 Natalia Portillo
// ****************************************************************************/

using System.Runtime.InteropServices;
using Aaru.CommonTypes.Interfaces;

namespace Aaru.DiscImages
{
    public sealed partial class VMware
    {
        [StructLayout(LayoutKind.Sequential, Pack = 1)]
        struct ExtentHeader
        {
            public readonly uint  magic;
            public readonly uint  version;
            public readonly uint  flags;
            public readonly ulong capacity;
            public readonly ulong grainSize;
            public readonly ulong descriptorOffset;
            public readonly ulong descriptorSize;
            public readonly uint  GTEsPerGT;
            public readonly ulong rgdOffset;
            public readonly ulong gdOffset;
            public readonly ulong overhead;
            [MarshalAs(UnmanagedType.U1)]
            public readonly bool uncleanShutdown;
            public readonly byte   singleEndLineChar;
            public readonly byte   nonEndLineChar;
            public readonly byte   doubleEndLineChar1;
            public readonly byte   doubleEndLineChar2;
            public readonly ushort compression;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 433)]
            public readonly byte[] padding;
        }

        [StructLayout(LayoutKind.Sequential, Pack = 1)]
        struct CowHeader
        {
            public readonly uint magic;
            public readonly uint version;
            public readonly uint flags;
            public readonly uint sectors;
            public readonly uint grainSize;
            public readonly uint gdOffset;
            public readonly uint numGDEntries;
            public readonly uint freeSector;
            public readonly uint cylinders;
            public readonly uint heads;
            public readonly uint spt;

            // It stats on cylinders, above, but, don't care
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 1024 - 12)]
            public readonly byte[] parentFileName;
            public readonly uint parentGeneration;
            public readonly uint generation;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 60)]
            public readonly byte[] name;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 512)]
            public readonly byte[] description;
            public readonly uint savedGeneration;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
            public readonly byte[] reserved;
            [MarshalAs(UnmanagedType.U1)]
            public readonly bool uncleanShutdown;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 396)]
            public readonly byte[] padding;
        }

        struct Extent
        {
            public string  Access;
            public uint    Sectors;
            public string  Type;
            public IFilter Filter;
            public string  Filename;
            public uint    Offset;
        }
    }
}