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90 lines
3.5 KiB
C#
90 lines
3.5 KiB
C#
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// /***************************************************************************
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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 : IBM JFS filesystem plugin
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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 © 2011-2023 Natalia Portillo
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// ****************************************************************************/
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// ReSharper disable UnusedMember.Local
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using System;
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using System.Runtime.InteropServices;
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namespace Aaru.Filesystems;
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/// <inheritdoc />
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/// <summary>Implements detection of IBM's Journaled File System</summary>
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public sealed partial class JFS
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{
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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readonly struct Extent
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{
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/// <summary>Leftmost 24 bits are extent length, rest 8 bits are most significant for <see cref="addr2" /></summary>
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public readonly uint len_addr;
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public readonly uint addr2;
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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readonly struct TimeStruct
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{
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public readonly uint tv_sec;
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public readonly uint tv_nsec;
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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readonly struct SuperBlock
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{
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public readonly uint s_magic;
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public readonly uint s_version;
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public readonly ulong s_size;
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public readonly uint s_bsize;
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public readonly ushort s_l2bsize;
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public readonly ushort s_l2bfactor;
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public readonly uint s_pbsize;
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public readonly ushort s_l1pbsize;
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public readonly ushort pad;
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public readonly uint s_agsize;
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public readonly Flags s_flags;
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public readonly State s_state;
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public readonly uint s_compress;
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public readonly Extent s_ait2;
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public readonly Extent s_aim2;
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public readonly uint s_logdev;
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public readonly uint s_logserial;
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public readonly Extent s_logpxd;
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public readonly Extent s_fsckpxd;
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public readonly TimeStruct s_time;
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public readonly uint s_fsckloglen;
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public readonly sbyte s_fscklog;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 11)]
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public readonly byte[] s_fpack;
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public readonly ulong s_xsize;
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public readonly Extent s_xfsckpxd;
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public readonly Extent s_xlogpxd;
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public readonly Guid s_uuid;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
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public readonly byte[] s_label;
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public readonly Guid s_loguuid;
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}
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}
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