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237 lines
10 KiB
C#
237 lines
10 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : QNX6.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : QNX6 filesystem plugin.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Identifies the QNX6 filesystem 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 © 2011-2025 Natalia Portillo
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// ****************************************************************************/
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using System;
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using System.Runtime.InteropServices;
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using System.Text;
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using Aaru.CommonTypes;
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using Aaru.CommonTypes.Interfaces;
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using Aaru.Helpers;
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using Schemas;
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using Marshal = Aaru.Helpers.Marshal;
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namespace Aaru.Filesystems
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{
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/// <inheritdoc />
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/// <summary>Implements detection of QNX 6 filesystem</summary>
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public sealed class QNX6 : IFilesystem
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{
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const uint QNX6_SUPER_BLOCK_SIZE = 0x1000;
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const uint QNX6_BOOT_BLOCKS_SIZE = 0x2000;
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const uint QNX6_MAGIC = 0x68191122;
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/// <inheritdoc />
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public FileSystemType XmlFsType { get; private set; }
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/// <inheritdoc />
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public Encoding Encoding { get; private set; }
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/// <inheritdoc />
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public string Name => "QNX6 Plugin";
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/// <inheritdoc />
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public Guid Id => new Guid("3E610EA2-4D08-4D70-8947-830CD4C74FC0");
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/// <inheritdoc />
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public string Author => "Natalia Portillo";
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/// <inheritdoc />
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public bool Identify(IMediaImage imagePlugin, Partition partition)
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{
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uint sectors = QNX6_SUPER_BLOCK_SIZE / imagePlugin.Info.SectorSize;
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uint bootSectors = QNX6_BOOT_BLOCKS_SIZE / imagePlugin.Info.SectorSize;
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if(partition.Start + bootSectors + sectors >= partition.End)
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return false;
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byte[] audiSector = imagePlugin.ReadSectors(partition.Start, sectors);
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byte[] sector = imagePlugin.ReadSectors(partition.Start + bootSectors, sectors);
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if(sector.Length < QNX6_SUPER_BLOCK_SIZE)
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return false;
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AudiSuperBlock audiSb = Marshal.ByteArrayToStructureLittleEndian<AudiSuperBlock>(audiSector);
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SuperBlock qnxSb = Marshal.ByteArrayToStructureLittleEndian<SuperBlock>(sector);
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return qnxSb.magic == QNX6_MAGIC || audiSb.magic == QNX6_MAGIC;
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}
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/// <inheritdoc />
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public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
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Encoding encoding)
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{
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Encoding = encoding ?? Encoding.GetEncoding("iso-8859-15");
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information = "";
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var sb = new StringBuilder();
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uint sectors = QNX6_SUPER_BLOCK_SIZE / imagePlugin.Info.SectorSize;
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uint bootSectors = QNX6_BOOT_BLOCKS_SIZE / imagePlugin.Info.SectorSize;
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byte[] audiSector = imagePlugin.ReadSectors(partition.Start, sectors);
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byte[] sector = imagePlugin.ReadSectors(partition.Start + bootSectors, sectors);
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if(sector.Length < QNX6_SUPER_BLOCK_SIZE)
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return;
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AudiSuperBlock audiSb = Marshal.ByteArrayToStructureLittleEndian<AudiSuperBlock>(audiSector);
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SuperBlock qnxSb = Marshal.ByteArrayToStructureLittleEndian<SuperBlock>(sector);
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bool audi = audiSb.magic == QNX6_MAGIC;
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if(audi)
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{
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sb.AppendLine("QNX6 (Audi) filesystem");
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sb.AppendFormat("Checksum: 0x{0:X8}", audiSb.checksum).AppendLine();
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sb.AppendFormat("Serial: 0x{0:X16}", audiSb.checksum).AppendLine();
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sb.AppendFormat("{0} bytes per block", audiSb.blockSize).AppendLine();
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sb.AppendFormat("{0} inodes free of {1}", audiSb.freeInodes, audiSb.numInodes).AppendLine();
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sb.AppendFormat("{0} blocks ({1} bytes) free of {2} ({3} bytes)", audiSb.freeBlocks,
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audiSb.freeBlocks * audiSb.blockSize, audiSb.numBlocks,
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audiSb.numBlocks * audiSb.blockSize).AppendLine();
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XmlFsType = new FileSystemType
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{
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Type = "QNX6 (Audi) filesystem",
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Clusters = audiSb.numBlocks,
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ClusterSize = audiSb.blockSize,
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Bootable = true,
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Files = audiSb.numInodes - audiSb.freeInodes,
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FilesSpecified = true,
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FreeClusters = audiSb.freeBlocks,
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FreeClustersSpecified = true,
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VolumeSerial = $"{audiSb.serial:X16}"
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};
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//xmlFSType.VolumeName = CurrentEncoding.GetString(audiSb.id);
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information = sb.ToString();
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return;
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}
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sb.AppendLine("QNX6 filesystem");
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sb.AppendFormat("Checksum: 0x{0:X8}", qnxSb.checksum).AppendLine();
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sb.AppendFormat("Serial: 0x{0:X16}", qnxSb.checksum).AppendLine();
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sb.AppendFormat("Created on {0}", DateHandlers.UnixUnsignedToDateTime(qnxSb.ctime)).AppendLine();
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sb.AppendFormat("Last mounted on {0}", DateHandlers.UnixUnsignedToDateTime(qnxSb.atime)).AppendLine();
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sb.AppendFormat("Flags: 0x{0:X8}", qnxSb.flags).AppendLine();
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sb.AppendFormat("Version1: 0x{0:X4}", qnxSb.version1).AppendLine();
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sb.AppendFormat("Version2: 0x{0:X4}", qnxSb.version2).AppendLine();
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//sb.AppendFormat("Volume ID: \"{0}\"", CurrentEncoding.GetString(qnxSb.volumeid)).AppendLine();
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sb.AppendFormat("{0} bytes per block", qnxSb.blockSize).AppendLine();
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sb.AppendFormat("{0} inodes free of {1}", qnxSb.freeInodes, qnxSb.numInodes).AppendLine();
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sb.AppendFormat("{0} blocks ({1} bytes) free of {2} ({3} bytes)", qnxSb.freeBlocks,
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qnxSb.freeBlocks * qnxSb.blockSize, qnxSb.numBlocks, qnxSb.numBlocks * qnxSb.blockSize).
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AppendLine();
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XmlFsType = new FileSystemType
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{
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Type = "QNX6 filesystem",
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Clusters = qnxSb.numBlocks,
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ClusterSize = qnxSb.blockSize,
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Bootable = true,
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Files = qnxSb.numInodes - qnxSb.freeInodes,
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FilesSpecified = true,
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FreeClusters = qnxSb.freeBlocks,
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FreeClustersSpecified = true,
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VolumeSerial = $"{qnxSb.serial:X16}",
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CreationDate = DateHandlers.UnixUnsignedToDateTime(qnxSb.ctime),
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CreationDateSpecified = true,
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ModificationDate = DateHandlers.UnixUnsignedToDateTime(qnxSb.atime),
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ModificationDateSpecified = true
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};
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//xmlFSType.VolumeName = CurrentEncoding.GetString(qnxSb.volumeid);
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information = sb.ToString();
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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readonly struct RootNode
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{
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public readonly ulong size;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
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public readonly uint[] pointers;
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public readonly byte levels;
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public readonly byte mode;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 6)]
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public readonly byte[] spare;
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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 magic;
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public readonly uint checksum;
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public readonly ulong serial;
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public readonly uint ctime;
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public readonly uint atime;
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public readonly uint flags;
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public readonly ushort version1;
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public readonly ushort version2;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
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public readonly byte[] volumeid;
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public readonly uint blockSize;
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public readonly uint numInodes;
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public readonly uint freeInodes;
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public readonly uint numBlocks;
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public readonly uint freeBlocks;
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public readonly uint allocationGroup;
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public readonly RootNode inode;
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public readonly RootNode bitmap;
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public readonly RootNode longfile;
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public readonly RootNode unknown;
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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readonly struct AudiSuperBlock
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{
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public readonly uint magic;
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public readonly uint checksum;
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public readonly ulong serial;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 12)]
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public readonly byte[] spare1;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 12)]
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public readonly byte[] id;
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public readonly uint blockSize;
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public readonly uint numInodes;
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public readonly uint freeInodes;
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public readonly uint numBlocks;
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public readonly uint freeBlocks;
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public readonly uint spare2;
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public readonly RootNode inode;
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public readonly RootNode bitmap;
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public readonly RootNode longfile;
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public readonly RootNode unknown;
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}
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}
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} |