static DiskLabel GetDiskLabel(byte[] disklabel)
{
GCHandle handle = GCHandle.Alloc(disklabel, GCHandleType.Pinned);
DiskLabel dl = (DiskLabel)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(DiskLabel));
handle.Free();
return(dl);
}
static DiskLabel SwapDiskLabel(DiskLabel dl)
{
dl = (DiskLabel)Marshal.SwapStructureMembersEndian(dl);
for (int i = 0; i < dl.d_drivedata.Length; i++)
{
dl.d_drivedata[i] = Swapping.Swap(dl.d_drivedata[i]);
}
for (int i = 0; i < dl.d_spare.Length; i++)
{
dl.d_spare[i] = Swapping.Swap(dl.d_spare[i]);
}
for (int i = 0; i < dl.d_partitions.Length; i++)
{
dl.d_partitions[i] = (BSDPartition)Marshal.SwapStructureMembersEndian(dl.d_partitions[i]);
}
return(dl);
}
public bool GetInformation(IMediaImage imagePlugin, out List <Partition> partitions, ulong sectorOffset)
{
partitions = new List <Partition>();
uint run = (MAX_LABEL_SIZE + labelOffsets.Last()) / imagePlugin.Info.SectorSize;
if ((MAX_LABEL_SIZE + labelOffsets.Last()) % imagePlugin.Info.SectorSize > 0)
{
run++;
}
DiskLabel dl = new DiskLabel();
bool found = false;
foreach (ulong location in labelLocations)
{
if (location + run + sectorOffset >= imagePlugin.Info.Sectors)
{
return(false);
}
byte[] tmp = imagePlugin.ReadSectors(location + sectorOffset, run);
foreach (uint offset in labelOffsets)
{
byte[] sector = new byte[MAX_LABEL_SIZE];
Array.Copy(tmp, offset, sector, 0, MAX_LABEL_SIZE);
dl = GetDiskLabel(sector);
DicConsole.DebugWriteLine("BSD plugin",
"dl.magic on sector {0} at offset {1} = 0x{2:X8} (expected 0x{3:X8})",
location + sectorOffset, offset, dl.d_magic, DISKMAGIC);
if ((dl.d_magic != DISKMAGIC || dl.d_magic2 != DISKMAGIC) &&
(dl.d_magic != DISKCIGAM || dl.d_magic2 != DISKCIGAM))
{
continue;
}
found = true;
break;
}
if (found)
{
break;
}
}
if (!found)
{
return(false);
}
if (dl.d_magic == DISKCIGAM && dl.d_magic2 == DISKCIGAM)
{
dl = SwapDiskLabel(dl);
}
DicConsole.DebugWriteLine("BSD plugin", "dl.d_type = {0}", dl.d_type);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_subtype = {0}", dl.d_subtype);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_typename = {0}",
StringHandlers.CToString(dl.d_typename));
DicConsole.DebugWriteLine("BSD plugin", "dl.d_packname = {0}",
StringHandlers.CToString(dl.d_packname));
DicConsole.DebugWriteLine("BSD plugin", "dl.d_secsize = {0}", dl.d_secsize);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_nsectors = {0}", dl.d_nsectors);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_ntracks = {0}", dl.d_ntracks);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_ncylinders = {0}", dl.d_ncylinders);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_secpercyl = {0}", dl.d_secpercyl);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_secperunit = {0}", dl.d_secperunit);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_sparespertrack = {0}", dl.d_sparespertrack);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_sparespercyl = {0}", dl.d_sparespercyl);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_acylinders = {0}", dl.d_acylinders);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_rpm = {0}", dl.d_rpm);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_interleave = {0}", dl.d_interleave);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_trackskew = {0}", dl.d_trackskew);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_cylskeew = {0}", dl.d_cylskeew);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_headswitch = {0}", dl.d_headswitch);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_trkseek = {0}", dl.d_trkseek);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_flags = {0}", dl.d_flags);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_drivedata[0] = {0}", dl.d_drivedata[0]);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_drivedata[1] = {0}", dl.d_drivedata[1]);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_drivedata[2] = {0}", dl.d_drivedata[2]);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_drivedata[3] = {0}", dl.d_drivedata[3]);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_drivedata[4] = {0}", dl.d_drivedata[4]);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_spare[0] = {0}", dl.d_spare[0]);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_spare[1] = {0}", dl.d_spare[1]);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_spare[2] = {0}", dl.d_spare[2]);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_spare[3] = {0}", dl.d_spare[3]);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_spare[4] = {0}", dl.d_spare[4]);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_magic2 = 0x{0:X8}", dl.d_magic2);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_checksum = 0x{0:X8}", dl.d_checksum);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_npartitions = {0}", dl.d_npartitions);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_bbsize = {0}", dl.d_bbsize);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_sbsize = {0}", dl.d_sbsize);
ulong counter = 0;
bool addSectorOffset = false;
for (int i = 0; i < dl.d_npartitions && i < 22; i++)
{
DicConsole.DebugWriteLine("BSD plugin", "dl.d_partitions[i].p_offset = {0}",
dl.d_partitions[i].p_offset);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_partitions[i].p_size = {0}", dl.d_partitions[i].p_size);
DicConsole.DebugWriteLine("BSD plugin", "dl.d_partitions[i].p_fstype = {0} ({1})",
dl.d_partitions[i].p_fstype, fsTypeToString(dl.d_partitions[i].p_fstype));
Partition part = new Partition
{
Start = dl.d_partitions[i].p_offset * dl.d_secsize / imagePlugin.Info.SectorSize,
Offset = dl.d_partitions[i].p_offset * dl.d_secsize,
Length = dl.d_partitions[i].p_size * dl.d_secsize / imagePlugin.Info.SectorSize,
Size = dl.d_partitions[i].p_size * dl.d_secsize,
Type = fsTypeToString(dl.d_partitions[i].p_fstype),
Sequence = counter,
Scheme = Name
};
if (dl.d_partitions[i].p_fstype == fsType.Unused)
{
continue;
}
// Crude and dirty way to know if the disklabel is relative to its parent partition...
if (dl.d_partitions[i].p_offset < sectorOffset && !addSectorOffset)
{
addSectorOffset = true;
}
if (addSectorOffset)
{
part.Start += sectorOffset;
part.Offset += sectorOffset * imagePlugin.Info.SectorSize;
}
DicConsole.DebugWriteLine("BSD plugin", "part.start = {0}", part.Start);
DicConsole.DebugWriteLine("BSD plugin", "Adding it...");
partitions.Add(part);
counter++;
}
return(partitions.Count > 0);
}
