public static BFSTOC FromSector(byte[] buff)
{
GCHandle handle = GCHandle.Alloc(buff, GCHandleType.Pinned);
BFSTOC s = (BFSTOC)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(BFSTOC));
handle.Free();
return(s);
}
public static Boolean IsBFS(string drive)
{
Boolean test = true;
//Check if first Partition is BFS
byte[] first;
first = llda.ReadSector(drive, 0, 4096 * 5);
if (first != null)
{
gpt = GPT.FromSectors(first);
test = test && (gpt.gptPartitionTable.partitions[0].BFSParitionType == new Guid("53525542-4354-494F-4E46-494C45535953"));
//Check if BFSTOC v1 exists
bfsTOC = BFSTOC.FromSector(llda.ReadSector(drive, 5, 4096));
byte[] version = Encoding.ASCII.GetBytes("BFS1");
test = test && bfsTOC.version.SequenceEqual(version);
return(test);
}
return(false);
}
public static BFSTOC emptyToc(UInt64 totalSectors, UInt32 bytesPerSector, Boolean gpt)
{
BFSTOC s = new BFSTOC
{
version = Encoding.ASCII.GetBytes("BFS1"),
diskspace = (((totalSectors * bytesPerSector / 4096) - 3) / 64 / 64) * 64 * 64,
};
s.plotFiles = new BFSPlotFile[72];
if (gpt)
{
s.plotFiles[0].startPos = 6;
}
else
{
s.plotFiles[0].startPos = 2;
}
s.UpdateCRC32();
return(s);
}
public static void FormatDriveGPT(string drive, UInt64 totalSectors, UInt32 bytesPerSector, UInt64 id)
{
//create GPT
GPT gpt = new GPT(totalSectors, bytesPerSector);
byte[] test = gpt.ToByteArray();
//create BFSTOC
BFSTOC bfsTOC = BFSTOC.emptyToc(totalSectors, bytesPerSector, true);
bfsTOC.id = id;
//write GPT
llda.WriteSector(drive, 0, 4096, gpt.ToByteArray());
//write MirrorGPT
gpt.ToggleMirror();
llda.WriteSector(drive, (Int64)totalSectors - 40, 512, gpt.ToGPTMirrorByteArray());
//write BFSTOC
llda.WriteSector(drive, 5, 4096, bfsTOC.ToByteArray());
//write mirror BFSTOC
llda.WriteSector(drive, 6 + (Int64)bfsTOC.diskspace, 4096, bfsTOC.ToByteArray());
//trigger OS partition table re-read
llda.refreshDrive(drive);
}
public static void LoadBFSTOC(string drive)
{
bfsTOC = BFSTOC.FromSector(llda.ReadSector(drive, 5, 4096));
}