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Aaru/Aaru.Filesystems/QNX4/Info.cs

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// /***************************************************************************
// Aaru Data Preservation Suite
// ----------------------------------------------------------------------------
//
// Filename : Info.cs
// Author(s) : Natalia Portillo <claunia@claunia.com>
//
// Component : QNX4 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 © 2011-2025 Natalia Portillo
// ****************************************************************************/
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using System.Text;
using Aaru.CommonTypes.AaruMetadata;
using Aaru.CommonTypes.Enums;
using Aaru.CommonTypes.Interfaces;
using Aaru.Helpers;
using Partition = Aaru.CommonTypes.Partition;
namespace Aaru.Filesystems;
/// <inheritdoc />
/// <summary>Implements detection of QNX 4 filesystem</summary>
[SuppressMessage("ReSharper", "UnusedType.Local")]
public sealed partial class QNX4
{
#region IFilesystem Members
/// <inheritdoc />
public bool Identify(IMediaImage imagePlugin, Partition partition)
{
if(partition.Start + 1 >= imagePlugin.Info.Sectors) return false;
ErrorNumber errno = imagePlugin.ReadSector(partition.Start + 1, false, out byte[] sector, out _);
if(errno != ErrorNumber.NoError) return false;
if(sector.Length < 512) return false;
Superblock qnxSb = Marshal.ByteArrayToStructureLittleEndian<Superblock>(sector);
// Check root directory name
if(!_rootDirFname.SequenceEqual(qnxSb.rootDir.di_fname)) return false;
// Check sizes are multiple of blocks
if(qnxSb.rootDir.di_size % 512 != 0 ||
qnxSb.inode.di_size % 512 != 0 ||
qnxSb.boot.di_size % 512 != 0 ||
qnxSb.altBoot.di_size % 512 != 0)
return false;
// Check extents are not past device
if(qnxSb.rootDir.di_first_xtnt.Block + partition.Start >= partition.End ||
qnxSb.inode.di_first_xtnt.Block + partition.Start >= partition.End ||
qnxSb.boot.di_first_xtnt.Block + partition.Start >= partition.End ||
qnxSb.altBoot.di_first_xtnt.Block + partition.Start >= partition.End)
return false;
// Check inodes are in use
return (qnxSb.rootDir.di_status & 0x01) == 0x01 &&
(qnxSb.inode.di_status & 0x01) == 0x01 &&
(qnxSb.boot.di_status & 0x01) == 0x01;
// All hail filesystems without identification marks
}
/// <inheritdoc />
public void GetInformation(IMediaImage imagePlugin, Partition partition, Encoding encoding, out string information,
out FileSystem metadata)
{
information = "";
metadata = new FileSystem();
ErrorNumber errno = imagePlugin.ReadSector(partition.Start + 1, false, out byte[] sector, out _);
if(errno != ErrorNumber.NoError) return;
if(sector.Length < 512) return;
Superblock qnxSb = Marshal.ByteArrayToStructureLittleEndian<Superblock>(sector);
// Too much useless information
/*
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.rootDir.di_fname = {0}", CurrentEncoding.GetString(qnxSb.rootDir.di_fname));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.rootDir.di_size = {0}", qnxSb.rootDir.di_size);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.rootDir.di_first_xtnt.block = {0}", qnxSb.rootDir.di_first_xtnt.block);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.rootDir.di_first_xtnt.length = {0}", qnxSb.rootDir.di_first_xtnt.length);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.rootDir.di_xblk = {0}", qnxSb.rootDir.di_xblk);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.rootDir.di_ftime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.rootDir.di_ftime));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.rootDir.di_mtime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.rootDir.di_mtime));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.rootDir.di_atime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.rootDir.di_atime));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.rootDir.di_ctime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.rootDir.di_ctime));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.rootDir.di_num_xtnts = {0}", qnxSb.rootDir.di_num_xtnts);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.rootDir.di_mode = {0}", Convert.ToString(qnxSb.rootDir.di_mode, 8));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.rootDir.di_uid = {0}", qnxSb.rootDir.di_uid);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.rootDir.di_gid = {0}", qnxSb.rootDir.di_gid);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.rootDir.di_nlink = {0}", qnxSb.rootDir.di_nlink);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.rootDir.di_zero = {0}", qnxSb.rootDir.di_zero);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.rootDir.di_type = {0}", qnxSb.rootDir.di_type);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.rootDir.di_status = {0}", qnxSb.rootDir.di_status);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.inode.di_fname = {0}", CurrentEncoding.GetString(qnxSb.inode.di_fname));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.inode.di_size = {0}", qnxSb.inode.di_size);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.inode.di_first_xtnt.block = {0}", qnxSb.inode.di_first_xtnt.block);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.inode.di_first_xtnt.length = {0}", qnxSb.inode.di_first_xtnt.length);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.inode.di_xblk = {0}", qnxSb.inode.di_xblk);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.inode.di_ftime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.inode.di_ftime));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.inode.di_mtime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.inode.di_mtime));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.inode.di_atime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.inode.di_atime));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.inode.di_ctime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.inode.di_ctime));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.inode.di_num_xtnts = {0}", qnxSb.inode.di_num_xtnts);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.inode.di_mode = {0}", Convert.ToString(qnxSb.inode.di_mode, 8));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.inode.di_uid = {0}", qnxSb.inode.di_uid);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.inode.di_gid = {0}", qnxSb.inode.di_gid);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.inode.di_nlink = {0}", qnxSb.inode.di_nlink);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.inode.di_zero = {0}", qnxSb.inode.di_zero);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.inode.di_type = {0}", qnxSb.inode.di_type);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.inode.di_status = {0}", qnxSb.inode.di_status);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.boot.di_fname = {0}", CurrentEncoding.GetString(qnxSb.boot.di_fname));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.boot.di_size = {0}", qnxSb.boot.di_size);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.boot.di_first_xtnt.block = {0}", qnxSb.boot.di_first_xtnt.block);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.boot.di_first_xtnt.length = {0}", qnxSb.boot.di_first_xtnt.length);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.boot.di_xblk = {0}", qnxSb.boot.di_xblk);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.boot.di_ftime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.boot.di_ftime));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.boot.di_mtime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.boot.di_mtime));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.boot.di_atime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.boot.di_atime));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.boot.di_ctime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.boot.di_ctime));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.boot.di_num_xtnts = {0}", qnxSb.boot.di_num_xtnts);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.boot.di_mode = {0}", Convert.ToString(qnxSb.boot.di_mode, 8));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.boot.di_uid = {0}", qnxSb.boot.di_uid);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.boot.di_gid = {0}", qnxSb.boot.di_gid);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.boot.di_nlink = {0}", qnxSb.boot.di_nlink);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.boot.di_zero = {0}", qnxSb.boot.di_zero);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.boot.di_type = {0}", qnxSb.boot.di_type);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.boot.di_status = {0}", qnxSb.boot.di_status);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.altBoot.di_fname = {0}", CurrentEncoding.GetString(qnxSb.altBoot.di_fname));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.altBoot.di_size = {0}", qnxSb.altBoot.di_size);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.altBoot.di_first_xtnt.block = {0}", qnxSb.altBoot.di_first_xtnt.block);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.altBoot.di_first_xtnt.length = {0}", qnxSb.altBoot.di_first_xtnt.length);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.altBoot.di_xblk = {0}", qnxSb.altBoot.di_xblk);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.altBoot.di_ftime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.altBoot.di_ftime));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.altBoot.di_mtime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.altBoot.di_mtime));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.altBoot.di_atime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.altBoot.di_atime));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.altBoot.di_ctime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.altBoot.di_ctime));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.altBoot.di_num_xtnts = {0}", qnxSb.altBoot.di_num_xtnts);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.altBoot.di_mode = {0}", Convert.ToString(qnxSb.altBoot.di_mode, 8));
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.altBoot.di_uid = {0}", qnxSb.altBoot.di_uid);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.altBoot.di_gid = {0}", qnxSb.altBoot.di_gid);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.altBoot.di_nlink = {0}", qnxSb.altBoot.di_nlink);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.altBoot.di_zero = {0}", qnxSb.altBoot.di_zero);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.altBoot.di_type = {0}", qnxSb.altBoot.di_type);
AaruLogging.DebugWriteLine(MODULE_NAME, "qnxSb.altBoot.di_status = {0}", qnxSb.altBoot.di_status);
*/
information = Localization.QNX4_filesystem +
"\n" +
string.Format(Localization.Created_on_0,
DateHandlers.UnixUnsignedToDateTime(qnxSb.rootDir.di_ftime)) +
"\n";
metadata = new FileSystem
{
Type = FS_TYPE,
Clusters = partition.Length,
ClusterSize = 512,
CreationDate = DateHandlers.UnixUnsignedToDateTime(qnxSb.rootDir.di_ftime),
ModificationDate = DateHandlers.UnixUnsignedToDateTime(qnxSb.rootDir.di_mtime)
};
metadata.Bootable |= qnxSb.boot.di_size != 0 || qnxSb.altBoot.di_size != 0;
}
#endregion
}
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