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Reorganize filesystems.

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Natalia Portillo
2022-12-07 13:07:31 +00:00
parent 4be18eb09c
commit 5744119b9c
310 changed files with 12901 additions and 6408 deletions
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155
Aaru.Filesystems/Reiser/Info.cs Normal file
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// /***************************************************************************
// Aaru Data Preservation Suite
// ----------------------------------------------------------------------------
//
// Filename : Info.cs
// Author(s) : Natalia Portillo <claunia@claunia.com>
//
// Component : Reiser filesystem plugin
//
// --[ License ] --------------------------------------------------------------
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2011-2023 Natalia Portillo
// ****************************************************************************/
using System.Linq;
using System.Text;
using Aaru.CommonTypes;
using Aaru.CommonTypes.Enums;
using Aaru.CommonTypes.Interfaces;
using Aaru.Helpers;
using Schemas;
namespace Aaru.Filesystems;
/// <inheritdoc />
/// <summary>Implements detection of the Reiser v3 filesystem</summary>
public sealed partial class Reiser : IFilesystem
{
/// <inheritdoc />
public bool Identify(IMediaImage imagePlugin, Partition partition)
{
if(imagePlugin.Info.SectorSize < 512)
return false;
uint sbAddr = REISER_SUPER_OFFSET / imagePlugin.Info.SectorSize;
if(sbAddr == 0)
sbAddr = 1;
uint sbSize = (uint)(Marshal.SizeOf<Superblock>() / imagePlugin.Info.SectorSize);
if(Marshal.SizeOf<Superblock>() % imagePlugin.Info.SectorSize != 0)
sbSize++;
if(partition.Start + sbAddr + sbSize >= partition.End)
return false;
ErrorNumber errno = imagePlugin.ReadSectors(partition.Start + sbAddr, sbSize, out byte[] sector);
if(errno != ErrorNumber.NoError)
return false;
if(sector.Length < Marshal.SizeOf<Superblock>())
return false;
Superblock reiserSb = Marshal.ByteArrayToStructureLittleEndian<Superblock>(sector);
return _magic35.SequenceEqual(reiserSb.magic) || _magic36.SequenceEqual(reiserSb.magic) ||
_magicJr.SequenceEqual(reiserSb.magic);
}
/// <inheritdoc />
public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information, Encoding encoding)
{
Encoding = encoding ?? Encoding.GetEncoding("iso-8859-15");
information = "";
if(imagePlugin.Info.SectorSize < 512)
return;
uint sbAddr = REISER_SUPER_OFFSET / imagePlugin.Info.SectorSize;
if(sbAddr == 0)
sbAddr = 1;
uint sbSize = (uint)(Marshal.SizeOf<Superblock>() / imagePlugin.Info.SectorSize);
if(Marshal.SizeOf<Superblock>() % imagePlugin.Info.SectorSize != 0)
sbSize++;
ErrorNumber errno = imagePlugin.ReadSectors(partition.Start + sbAddr, sbSize, out byte[] sector);
if(errno != ErrorNumber.NoError)
return;
if(sector.Length < Marshal.SizeOf<Superblock>())
return;
Superblock reiserSb = Marshal.ByteArrayToStructureLittleEndian<Superblock>(sector);
if(!_magic35.SequenceEqual(reiserSb.magic) &&
!_magic36.SequenceEqual(reiserSb.magic) &&
!_magicJr.SequenceEqual(reiserSb.magic))
return;
var sb = new StringBuilder();
if(_magic35.SequenceEqual(reiserSb.magic))
sb.AppendLine(Localization.Reiser_3_5_filesystem);
else if(_magic36.SequenceEqual(reiserSb.magic))
sb.AppendLine(Localization.Reiser_3_6_filesystem);
else if(_magicJr.SequenceEqual(reiserSb.magic))
sb.AppendLine(Localization.Reiser_Jr_filesystem);
sb.AppendFormat(Localization.Volume_has_0_blocks_with_1_blocks_free, reiserSb.block_count,
reiserSb.free_blocks).AppendLine();
sb.AppendFormat(Localization._0_bytes_per_block, reiserSb.blocksize).AppendLine();
sb.AppendFormat(Localization.Root_directory_resides_on_block_0, reiserSb.root_block).AppendLine();
if(reiserSb.umount_state == 2)
sb.AppendLine(Localization.Volume_has_not_been_cleanly_umounted);
sb.AppendFormat(Localization.Volume_last_checked_on_0,
DateHandlers.UnixUnsignedToDateTime(reiserSb.last_check)).AppendLine();
if(reiserSb.version >= 2)
{
sb.AppendFormat(Localization.Volume_UUID_0, reiserSb.uuid).AppendLine();
sb.AppendFormat(Localization.Volume_name_0, Encoding.GetString(reiserSb.label)).AppendLine();
}
information = sb.ToString();
XmlFsType = new FileSystemType
{
Type = FS_TYPE,
ClusterSize = reiserSb.blocksize,
Clusters = reiserSb.block_count,
FreeClusters = reiserSb.free_blocks,
FreeClustersSpecified = true,
Dirty = reiserSb.umount_state == 2
};
if(reiserSb.version < 2)
return;
XmlFsType.VolumeName = StringHandlers.CToString(reiserSb.label, Encoding);
XmlFsType.VolumeSerial = reiserSb.uuid.ToString();
}
}