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102 lines
4.3 KiB
C#
102 lines
4.3 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 : BeOS 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 © 2011-2025 Natalia Portillo
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// ****************************************************************************/
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using System.Diagnostics.CodeAnalysis;
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using System.Runtime.InteropServices;
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using Aaru.CommonTypes.Attributes;
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namespace Aaru.Filesystems;
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// Information from Practical Filesystem Design, ISBN 1-55860-497-9
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/// <inheritdoc />
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/// <summary>Implements detection of the Be (new) filesystem</summary>
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[SuppressMessage("ReSharper", "UnusedMember.Local")]
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public sealed partial class BeFS
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{
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#region Nested type: SuperBlock
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/// <summary>Be superblock</summary>
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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[SwapEndian]
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partial struct SuperBlock
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{
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/// <summary>0x000, Volume name, 32 bytes</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
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public byte[] name;
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/// <summary>0x020, "BFS1", 0x42465331</summary>
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public uint magic1;
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/// <summary>0x024, "BIGE", 0x42494745</summary>
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public uint fs_byte_order;
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/// <summary>0x028, Bytes per block</summary>
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public uint block_size;
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/// <summary>0x02C, 1 << block_shift == block_size</summary>
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public uint block_shift;
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/// <summary>0x030, Blocks in volume</summary>
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public long num_blocks;
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/// <summary>0x038, Used blocks in volume</summary>
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public long used_blocks;
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/// <summary>0x040, Bytes per inode</summary>
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public int inode_size;
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/// <summary>0x044, 0xDD121031</summary>
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public uint magic2;
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/// <summary>0x048, Blocks per allocation group</summary>
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public int blocks_per_ag;
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/// <summary>0x04C, 1 << ag_shift == blocks_per_ag</summary>
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public int ag_shift;
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/// <summary>0x050, Allocation groups in volume</summary>
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public int num_ags;
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/// <summary>0x054, 0x434c454e if clean, 0x44495254 if dirty</summary>
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public uint flags;
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/// <summary>0x058, Allocation group of journal</summary>
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public int log_blocks_ag;
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/// <summary>0x05C, Start block of journal, inside ag</summary>
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public ushort log_blocks_start;
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/// <summary>0x05E, Length in blocks of journal, inside ag</summary>
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public ushort log_blocks_len;
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/// <summary>0x060, Start of journal</summary>
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public long log_start;
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/// <summary>0x068, End of journal</summary>
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public long log_end;
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/// <summary>0x070, 0x15B6830E</summary>
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public uint magic3;
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/// <summary>0x074, Allocation group where root folder's i-node resides</summary>
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public int root_dir_ag;
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/// <summary>0x078, Start in ag of root folder's i-node</summary>
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public ushort root_dir_start;
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/// <summary>0x07A, As this is part of inode_addr, this is 1</summary>
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public ushort root_dir_len;
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/// <summary>0x07C, Allocation group where indices' i-node resides</summary>
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public int indices_ag;
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/// <summary>0x080, Start in ag of indices' i-node</summary>
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public ushort indices_start;
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/// <summary>0x082, As this is part of inode_addr, this is 1</summary>
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public ushort indices_len;
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}
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#endregion
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} |