public bool Identify(IMediaImage imagePlugin, Partition partition)
{
if (imagePlugin.Info.SectorSize < 512)
{
return(false);
}
// Misaligned
if (imagePlugin.Info.XmlMediaType == XmlMediaType.OpticalDisc)
{
uint sbSize = (uint)((Marshal.SizeOf <XFS_Superblock>() + 0x400) / imagePlugin.Info.SectorSize);
if ((Marshal.SizeOf <XFS_Superblock>() + 0x400) % imagePlugin.Info.SectorSize != 0)
{
sbSize++;
}
byte[] sector = imagePlugin.ReadSectors(partition.Start, sbSize);
if (sector.Length < Marshal.SizeOf <XFS_Superblock>())
{
return(false);
}
byte[] sbpiece = new byte[Marshal.SizeOf <XFS_Superblock>()];
foreach (int location in new[] { 0, 0x200, 0x400 })
{
Array.Copy(sector, location, sbpiece, 0, Marshal.SizeOf <XFS_Superblock>());
XFS_Superblock xfsSb = Marshal.ByteArrayToStructureBigEndian <XFS_Superblock>(sbpiece);
DicConsole.DebugWriteLine("XFS plugin", "magic at 0x{0:X3} = 0x{1:X8} (expected 0x{2:X8})",
location, xfsSb.magicnum, XFS_MAGIC);
if (xfsSb.magicnum == XFS_MAGIC)
{
return(true);
}
}
}
else
{
foreach (int i in new[] { 0, 1, 2 })
{
ulong location = (ulong)i;
uint sbSize = (uint)(Marshal.SizeOf <XFS_Superblock>() / imagePlugin.Info.SectorSize);
if (Marshal.SizeOf <XFS_Superblock>() % imagePlugin.Info.SectorSize != 0)
{
sbSize++;
}
byte[] sector = imagePlugin.ReadSectors(partition.Start + location, sbSize);
if (sector.Length < Marshal.SizeOf <XFS_Superblock>())
{
return(false);
}
XFS_Superblock xfsSb = Marshal.ByteArrayToStructureBigEndian <XFS_Superblock>(sector);
DicConsole.DebugWriteLine("XFS plugin", "magic at {0} = 0x{1:X8} (expected 0x{2:X8})", location,
xfsSb.magicnum, XFS_MAGIC);
if (xfsSb.magicnum == XFS_MAGIC)
{
return(true);
}
}
}
return(false);
}
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;
}
XFS_Superblock xfsSb = new XFS_Superblock();
// Misaligned
if (imagePlugin.Info.XmlMediaType == XmlMediaType.OpticalDisc)
{
uint sbSize = (uint)((Marshal.SizeOf <XFS_Superblock>() + 0x400) / imagePlugin.Info.SectorSize);
if ((Marshal.SizeOf <XFS_Superblock>() + 0x400) % imagePlugin.Info.SectorSize != 0)
{
sbSize++;
}
byte[] sector = imagePlugin.ReadSectors(partition.Start, sbSize);
if (sector.Length < Marshal.SizeOf <XFS_Superblock>())
{
return;
}
byte[] sbpiece = new byte[Marshal.SizeOf <XFS_Superblock>()];
foreach (int location in new[] { 0, 0x200, 0x400 })
{
Array.Copy(sector, location, sbpiece, 0, Marshal.SizeOf <XFS_Superblock>());
xfsSb = Marshal.ByteArrayToStructureBigEndian <XFS_Superblock>(sbpiece);
DicConsole.DebugWriteLine("XFS plugin", "magic at 0x{0:X3} = 0x{1:X8} (expected 0x{2:X8})",
location, xfsSb.magicnum, XFS_MAGIC);
if (xfsSb.magicnum == XFS_MAGIC)
{
break;
}
}
}
else
{
foreach (int i in new[] { 0, 1, 2 })
{
ulong location = (ulong)i;
uint sbSize = (uint)(Marshal.SizeOf <XFS_Superblock>() / imagePlugin.Info.SectorSize);
if (Marshal.SizeOf <XFS_Superblock>() % imagePlugin.Info.SectorSize != 0)
{
sbSize++;
}
byte[] sector = imagePlugin.ReadSectors(partition.Start + location, sbSize);
if (sector.Length < Marshal.SizeOf <XFS_Superblock>())
{
return;
}
xfsSb = Marshal.ByteArrayToStructureBigEndian <XFS_Superblock>(sector);
DicConsole.DebugWriteLine("XFS plugin", "magic at {0} = 0x{1:X8} (expected 0x{2:X8})", location,
xfsSb.magicnum, XFS_MAGIC);
if (xfsSb.magicnum == XFS_MAGIC)
{
break;
}
}
}
if (xfsSb.magicnum != XFS_MAGIC)
{
return;
}
StringBuilder sb = new StringBuilder();
sb.AppendLine("XFS filesystem");
sb.AppendFormat("Filesystem version {0}", xfsSb.version & 0xF).AppendLine();
sb.AppendFormat("{0} bytes per sector", xfsSb.sectsize).AppendLine();
sb.AppendFormat("{0} bytes per block", xfsSb.blocksize).AppendLine();
sb.AppendFormat("{0} bytes per inode", xfsSb.inodesize).AppendLine();
sb.AppendFormat("{0} data blocks in volume, {1} free", xfsSb.dblocks, xfsSb.fdblocks).AppendLine();
sb.AppendFormat("{0} blocks per allocation group", xfsSb.agblocks).AppendLine();
sb.AppendFormat("{0} allocation groups in volume", xfsSb.agcount).AppendLine();
sb.AppendFormat("{0} inodes in volume, {1} free", xfsSb.icount, xfsSb.ifree).AppendLine();
if (xfsSb.inprogress > 0)
{
sb.AppendLine("fsck in progress");
}
sb.AppendFormat("Volume name: {0}", StringHandlers.CToString(xfsSb.fname, Encoding)).AppendLine();
sb.AppendFormat("Volume UUID: {0}", xfsSb.uuid).AppendLine();
information = sb.ToString();
XmlFsType = new FileSystemType
{
Type = "XFS filesystem",
ClusterSize = xfsSb.blocksize,
Clusters = xfsSb.dblocks,
FreeClusters = xfsSb.fdblocks,
FreeClustersSpecified = true,
Files = xfsSb.icount - xfsSb.ifree,
FilesSpecified = true,
Dirty = xfsSb.inprogress > 0,
VolumeName = StringHandlers.CToString(xfsSb.fname, Encoding),
VolumeSerial = xfsSb.uuid.ToString()
};
}
