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125 lines
4.9 KiB
C#
125 lines
4.9 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : Info.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : UnixWare boot 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;
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using System.Text;
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using Aaru.CommonTypes.AaruMetadata;
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using Aaru.CommonTypes.Enums;
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using Aaru.CommonTypes.Interfaces;
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using Aaru.Helpers;
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using Aaru.Logging;
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using Partition = Aaru.CommonTypes.Partition;
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namespace Aaru.Filesystems;
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// Information from the Linux kernel
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/// <inheritdoc />
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/// <summary>Implements detection of the UNIX boot filesystem</summary>
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public sealed partial class BFS
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{
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#region IFilesystem Members
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/// <inheritdoc />
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public bool Identify(IMediaImage imagePlugin, Partition partition)
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{
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if(2 + partition.Start >= partition.End) return false;
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ErrorNumber errno = imagePlugin.ReadSector(0 + partition.Start, false, out byte[] tmp, out _);
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if(errno != ErrorNumber.NoError) return false;
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var magic = BitConverter.ToUInt32(tmp, 0);
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return magic == BFS_MAGIC;
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}
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/// <inheritdoc />
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public void GetInformation(IMediaImage imagePlugin, Partition partition, Encoding encoding, out string information,
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out FileSystem metadata)
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{
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encoding ??= Encoding.GetEncoding("iso-8859-15");
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information = "";
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metadata = new FileSystem();
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var sb = new StringBuilder();
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ErrorNumber errno = imagePlugin.ReadSector(0 + partition.Start, false, out byte[] bfsSbSector, out _);
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if(errno != ErrorNumber.NoError) return;
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var sbStrings = new byte[6];
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var bfsSb = new SuperBlock
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{
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s_magic = BitConverter.ToUInt32(bfsSbSector, 0x00),
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s_start = BitConverter.ToUInt32(bfsSbSector, 0x04),
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s_end = BitConverter.ToUInt32(bfsSbSector, 0x08),
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s_from = BitConverter.ToUInt32(bfsSbSector, 0x0C),
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s_to = BitConverter.ToUInt32(bfsSbSector, 0x10),
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s_bfrom = BitConverter.ToInt32(bfsSbSector, 0x14),
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s_bto = BitConverter.ToInt32(bfsSbSector, 0x18)
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};
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Array.Copy(bfsSbSector, 0x1C, sbStrings, 0, 6);
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bfsSb.s_fsname = StringHandlers.CToString(sbStrings, encoding);
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Array.Copy(bfsSbSector, 0x22, sbStrings, 0, 6);
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bfsSb.s_volume = StringHandlers.CToString(sbStrings, encoding);
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AaruLogging.Debug(MODULE_NAME, "bfs_sb.s_magic: 0x{0:X8}", bfsSb.s_magic);
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AaruLogging.Debug(MODULE_NAME, "bfs_sb.s_start: 0x{0:X8}", bfsSb.s_start);
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AaruLogging.Debug(MODULE_NAME, "bfs_sb.s_end: 0x{0:X8}", bfsSb.s_end);
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AaruLogging.Debug(MODULE_NAME, "bfs_sb.s_from: 0x{0:X8}", bfsSb.s_from);
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AaruLogging.Debug(MODULE_NAME, "bfs_sb.s_to: 0x{0:X8}", bfsSb.s_to);
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AaruLogging.Debug(MODULE_NAME, "bfs_sb.s_bfrom: 0x{0:X8}", bfsSb.s_bfrom);
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AaruLogging.Debug(MODULE_NAME, "bfs_sb.s_bto: 0x{0:X8}", bfsSb.s_bto);
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AaruLogging.Debug(MODULE_NAME, "bfs_sb.s_fsname: 0x{0}", bfsSb.s_fsname);
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AaruLogging.Debug(MODULE_NAME, "bfs_sb.s_volume: 0x{0}", bfsSb.s_volume);
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sb.AppendLine(Localization.UNIX_Boot_Filesystem);
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sb.AppendFormat(Localization.Volume_goes_from_byte_0_to_byte_1_for_2_bytes,
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bfsSb.s_start,
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bfsSb.s_end,
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bfsSb.s_end - bfsSb.s_start)
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.AppendLine();
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sb.AppendFormat(Localization.Filesystem_name_0, bfsSb.s_fsname).AppendLine();
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sb.AppendFormat(Localization.Volume_name_0, bfsSb.s_volume).AppendLine();
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metadata = new FileSystem
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{
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Type = FS_TYPE,
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VolumeName = bfsSb.s_volume,
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ClusterSize = imagePlugin.Info.SectorSize,
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Clusters = partition.End - partition.Start + 1
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};
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information = sb.ToString();
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}
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#endregion
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} |