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94 lines
3.4 KiB
C#
94 lines
3.4 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 : Extent File System 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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/// <inheritdoc />
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/// <summary>Implements identification for the SGI Extent FileSystem</summary>
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public sealed partial class EFS
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{
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#region Nested type: Superblock
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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[SuppressMessage("ReSharper", "InconsistentNaming")]
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[SwapEndian]
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partial struct Superblock
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{
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/* 0: fs size incl. bb 0 (in bb) */
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public int sb_size;
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/* 4: first cg offset (in bb) */
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public int sb_firstcg;
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/* 8: cg size (in bb) */
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public int sb_cgfsize;
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/* 12: inodes/cg (in bb) */
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public short sb_cgisize;
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/* 14: geom: sectors/track */
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public short sb_sectors;
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/* 16: geom: heads/cylinder (unused) */
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public short sb_heads;
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/* 18: num of cg's in the filesystem */
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public short sb_ncg;
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/* 20: non-0 indicates fsck required */
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public short sb_dirty;
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/* 22: */
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public short sb_pad0;
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/* 24: superblock ctime */
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public int sb_time;
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/* 28: magic [0] */
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public uint sb_magic;
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/* 32: name of filesystem */
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 6)]
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public byte[] sb_fname;
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/* 38: name of filesystem pack */
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 6)]
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public byte[] sb_fpack;
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/* 44: bitmap size (in bytes) */
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public int sb_bmsize;
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/* 48: total free data blocks */
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public int sb_tfree;
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/* 52: total free inodes */
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public int sb_tinode;
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/* 56: bitmap offset (grown fs) */
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public int sb_bmblock;
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/* 62: repl. superblock offset */
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public int sb_replsb;
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/* 64: last allocated inode */
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public int sb_lastinode;
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/* 68: unused */
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 20)]
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public byte[] sb_spare;
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/* 88: checksum (all above) */
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public uint sb_checksum;
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}
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#endregion
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} |