public bool Identify(IMediaImage imagePlugin, Partition partition)
{
if (imagePlugin.Info.Sectors != 455 && imagePlugin.Info.Sectors != 560)
{
return(false);
}
if (partition.Start > 0 || imagePlugin.Info.SectorSize != 256)
{
return(false);
}
int spt = imagePlugin.Info.Sectors == 455 ? 13 : 16;
byte[] vtocB = imagePlugin.ReadSector((ulong)(17 * spt));
vtoc = new Vtoc();
IntPtr vtocPtr = Marshal.AllocHGlobal(256);
Marshal.Copy(vtocB, 0, vtocPtr, 256);
vtoc = (Vtoc)Marshal.PtrToStructure(vtocPtr, typeof(Vtoc));
Marshal.FreeHGlobal(vtocPtr);
return(vtoc.catalogSector < spt && vtoc.maxTrackSectorPairsPerSector <= 122 &&
vtoc.sectorsPerTrack == spt && vtoc.bytesPerSector == 256);
}
public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
Encoding encoding)
{
Encoding = encoding ?? new Apple2();
information = "";
StringBuilder sb = new StringBuilder();
int spt;
spt = imagePlugin.Info.Sectors == 455 ? 13 : 16;
byte[] vtocB = imagePlugin.ReadSector((ulong)(17 * spt));
vtoc = new Vtoc();
IntPtr vtocPtr = Marshal.AllocHGlobal(256);
Marshal.Copy(vtocB, 0, vtocPtr, 256);
vtoc = (Vtoc)Marshal.PtrToStructure(vtocPtr, typeof(Vtoc));
Marshal.FreeHGlobal(vtocPtr);
sb.AppendLine("Apple DOS File System");
sb.AppendLine();
sb.AppendFormat("Catalog starts at sector {0} of track {1}", vtoc.catalogSector, vtoc.catalogTrack)
.AppendLine();
sb.AppendFormat("File system initialized by DOS release {0}", vtoc.dosRelease).AppendLine();
sb.AppendFormat("Disk volume number {0}", vtoc.volumeNumber).AppendLine();
sb.AppendFormat("Sectors allocated at most in track {0}", vtoc.lastAllocatedSector).AppendLine();
sb.AppendFormat("{0} tracks in volume", vtoc.tracks).AppendLine();
sb.AppendFormat("{0} sectors per track", vtoc.sectorsPerTrack).AppendLine();
sb.AppendFormat("{0} bytes per sector", vtoc.bytesPerSector).AppendLine();
sb.AppendFormat("Track allocation is {0}", vtoc.allocationDirection > 0 ? "forward" : "reverse")
.AppendLine();
information = sb.ToString();
XmlFsType = new FileSystemType
{
Bootable = true,
Clusters = (long)imagePlugin.Info.Sectors,
ClusterSize = (int)imagePlugin.Info.SectorSize,
Type = "Apple DOS"
};
}
/// <summary>
/// Mounts an Apple DOS filesystem
/// </summary>
public Errno Mount(IMediaImage imagePlugin, Partition partition, Encoding encoding,
Dictionary <string, string> options)
{
device = imagePlugin;
start = partition.Start;
Encoding = encoding ?? new Apple2();
if (device.Info.Sectors != 455 && device.Info.Sectors != 560)
{
DicConsole.DebugWriteLine("Apple DOS plugin", "Incorrect device size.");
return(Errno.InOutError);
}
if (start > 0)
{
DicConsole.DebugWriteLine("Apple DOS plugin", "Partitions are not supported.");
return(Errno.InOutError);
}
if (device.Info.SectorSize != 256)
{
DicConsole.DebugWriteLine("Apple DOS plugin", "Incorrect sector size.");
return(Errno.InOutError);
}
sectorsPerTrack = device.Info.Sectors == 455 ? 13 : 16;
// Read the VTOC
vtocBlocks = device.ReadSector((ulong)(17 * sectorsPerTrack));
vtoc = new Vtoc();
IntPtr vtocPtr = Marshal.AllocHGlobal(256);
Marshal.Copy(vtocBlocks, 0, vtocPtr, 256);
vtoc = (Vtoc)Marshal.PtrToStructure(vtocPtr, typeof(Vtoc));
Marshal.FreeHGlobal(vtocPtr);
track1UsedByFiles = false;
track2UsedByFiles = false;
usedSectors = 1;
Errno error = ReadCatalog();
if (error != Errno.NoError)
{
DicConsole.DebugWriteLine("Apple DOS plugin", "Unable to read catalog.");
return(error);
}
error = CacheAllFiles();
if (error != Errno.NoError)
{
DicConsole.DebugWriteLine("Apple DOS plugin", "Unable cache all files.");
return(error);
}
// Create XML metadata for mounted filesystem
XmlFsType = new FileSystemType
{
Bootable = true,
Clusters = (long)device.Info.Sectors,
ClusterSize = vtoc.bytesPerSector,
Files = catalogCache.Count,
FilesSpecified = true,
FreeClustersSpecified = true,
Type = "Apple DOS"
};
XmlFsType.FreeClusters = XmlFsType.Clusters - usedSectors;
if (options == null)
{
options = GetDefaultOptions();
}
if (options.TryGetValue("debug", out string debugString))
{
bool.TryParse(debugString, out debug);
}
mounted = true;
return(Errno.NoError);
}
