mirror of
https://github.com/aaru-dps/Aaru.git
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Move to file scoped namespaces.
This commit is contained in:
@@ -41,279 +41,278 @@ using Aaru.CommonTypes.Interfaces;
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using Aaru.Console;
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using Aaru.Helpers;
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namespace Aaru.DiscImages
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namespace Aaru.DiscImages;
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public sealed partial class WCDiskImage
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{
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public sealed partial class WCDiskImage
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/// <inheritdoc />
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public ErrorNumber Open(IFilter imageFilter)
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{
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/// <inheritdoc />
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public ErrorNumber Open(IFilter imageFilter)
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string comments = string.Empty;
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Stream stream = imageFilter.GetDataForkStream();
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stream.Seek(0, SeekOrigin.Begin);
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byte[] header = new byte[32];
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stream.Read(header, 0, 32);
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FileHeader fheader = Marshal.ByteArrayToStructureLittleEndian<FileHeader>(header);
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AaruConsole.DebugWriteLine("d2f plugin",
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"Detected WC DISK IMAGE with {0} heads, {1} tracks and {2} sectors per track.",
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fheader.heads, fheader.cylinders, fheader.sectorsPerTrack);
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_imageInfo.Cylinders = fheader.cylinders;
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_imageInfo.SectorsPerTrack = fheader.sectorsPerTrack;
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_imageInfo.SectorSize = 512; // only 512 bytes per sector supported
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_imageInfo.Heads = fheader.heads;
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_imageInfo.Sectors = _imageInfo.Heads * _imageInfo.Cylinders * _imageInfo.SectorsPerTrack;
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_imageInfo.ImageSize = _imageInfo.Sectors * _imageInfo.SectorSize;
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_imageInfo.XmlMediaType = XmlMediaType.BlockMedia;
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_imageInfo.CreationTime = imageFilter.CreationTime;
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_imageInfo.LastModificationTime = imageFilter.LastWriteTime;
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_imageInfo.MediaTitle = Path.GetFileNameWithoutExtension(imageFilter.Filename);
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_imageInfo.MediaType = Geometry.GetMediaType(((ushort)_imageInfo.Cylinders, (byte)_imageInfo.Heads,
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(ushort)_imageInfo.SectorsPerTrack, 512, MediaEncoding.MFM,
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false));
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/* buffer the entire disk in memory */
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for(int cyl = 0; cyl < _imageInfo.Cylinders; cyl++)
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{
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string comments = string.Empty;
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Stream stream = imageFilter.GetDataForkStream();
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stream.Seek(0, SeekOrigin.Begin);
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byte[] header = new byte[32];
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stream.Read(header, 0, 32);
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FileHeader fheader = Marshal.ByteArrayToStructureLittleEndian<FileHeader>(header);
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AaruConsole.DebugWriteLine("d2f plugin",
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"Detected WC DISK IMAGE with {0} heads, {1} tracks and {2} sectors per track.",
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fheader.heads, fheader.cylinders, fheader.sectorsPerTrack);
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_imageInfo.Cylinders = fheader.cylinders;
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_imageInfo.SectorsPerTrack = fheader.sectorsPerTrack;
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_imageInfo.SectorSize = 512; // only 512 bytes per sector supported
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_imageInfo.Heads = fheader.heads;
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_imageInfo.Sectors = _imageInfo.Heads * _imageInfo.Cylinders * _imageInfo.SectorsPerTrack;
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_imageInfo.ImageSize = _imageInfo.Sectors * _imageInfo.SectorSize;
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_imageInfo.XmlMediaType = XmlMediaType.BlockMedia;
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_imageInfo.CreationTime = imageFilter.CreationTime;
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_imageInfo.LastModificationTime = imageFilter.LastWriteTime;
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_imageInfo.MediaTitle = Path.GetFileNameWithoutExtension(imageFilter.Filename);
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_imageInfo.MediaType = Geometry.GetMediaType(((ushort)_imageInfo.Cylinders, (byte)_imageInfo.Heads,
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(ushort)_imageInfo.SectorsPerTrack, 512, MediaEncoding.MFM,
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false));
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/* buffer the entire disk in memory */
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for(int cyl = 0; cyl < _imageInfo.Cylinders; cyl++)
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for(int head = 0; head < _imageInfo.Heads; head++)
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{
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for(int head = 0; head < _imageInfo.Heads; head++)
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{
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var errno =ReadTrack(stream, cyl, head);
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var errno =ReadTrack(stream, cyl, head);
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if(errno != ErrorNumber.NoError)
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return errno;
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}
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if(errno != ErrorNumber.NoError)
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return errno;
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}
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/* if there are extra tracks, read them as well */
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if(fheader.extraTracks[0] == 1)
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{
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AaruConsole.DebugWriteLine("d2f plugin", "Extra track 1 (head 0) present, reading");
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ReadTrack(stream, (int)_imageInfo.Cylinders, 0);
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}
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if(fheader.extraTracks[1] == 1)
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{
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AaruConsole.DebugWriteLine("d2f plugin", "Extra track 1 (head 1) present, reading");
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ReadTrack(stream, (int)_imageInfo.Cylinders, 1);
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}
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if(fheader.extraTracks[2] == 1)
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{
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AaruConsole.DebugWriteLine("d2f plugin", "Extra track 2 (head 0) present, reading");
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ReadTrack(stream, (int)_imageInfo.Cylinders + 1, 0);
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}
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if(fheader.extraTracks[3] == 1)
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{
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AaruConsole.DebugWriteLine("d2f plugin", "Extra track 2 (head 1) present, reading");
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ReadTrack(stream, (int)_imageInfo.Cylinders + 1, 1);
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}
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/* adjust number of cylinders */
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if(fheader.extraTracks[0] == 1 ||
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fheader.extraTracks[1] == 1)
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_imageInfo.Cylinders++;
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if(fheader.extraTracks[2] == 1 ||
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fheader.extraTracks[3] == 1)
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_imageInfo.Cylinders++;
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/* read the comment and directory data if present */
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if(fheader.extraFlags.HasFlag(ExtraFlag.Comment))
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{
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AaruConsole.DebugWriteLine("d2f plugin", "Comment present, reading");
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byte[] sheaderBuffer = new byte[6];
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stream.Read(sheaderBuffer, 0, 6);
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SectorHeader sheader = Marshal.ByteArrayToStructureLittleEndian<SectorHeader>(sheaderBuffer);
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if(sheader.flag != SectorFlag.Comment)
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{
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AaruConsole.ErrorWriteLine($"Invalid sector type '{sheader.flag.ToString()}' encountered");
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return ErrorNumber.InvalidArgument;
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}
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byte[] comm = new byte[sheader.crc];
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stream.Read(comm, 0, sheader.crc);
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comments += Encoding.ASCII.GetString(comm) + Environment.NewLine;
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}
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if(fheader.extraFlags.HasFlag(ExtraFlag.Directory))
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{
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AaruConsole.DebugWriteLine("d2f plugin", "Directory listing present, reading");
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byte[] sheaderBuffer = new byte[6];
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stream.Read(sheaderBuffer, 0, 6);
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SectorHeader sheader = Marshal.ByteArrayToStructureLittleEndian<SectorHeader>(sheaderBuffer);
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if(sheader.flag != SectorFlag.Directory)
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{
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AaruConsole.ErrorWriteLine($"Invalid sector type '{sheader.flag.ToString()}' encountered");
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return ErrorNumber.InvalidArgument;
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}
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byte[] dir = new byte[sheader.crc];
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stream.Read(dir, 0, sheader.crc);
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comments += Encoding.ASCII.GetString(dir);
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}
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if(comments.Length > 0)
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_imageInfo.Comments = comments;
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// save some variables for later use
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_fileHeader = fheader;
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_wcImageFilter = imageFilter;
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return ErrorNumber.InvalidArgument;
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}
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/// <inheritdoc />
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public ErrorNumber ReadSector(ulong sectorAddress, out byte[] buffer)
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/* if there are extra tracks, read them as well */
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if(fheader.extraTracks[0] == 1)
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{
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int sectorNumber = (int)(sectorAddress % _imageInfo.SectorsPerTrack) + 1;
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int trackNumber = (int)(sectorAddress / _imageInfo.SectorsPerTrack);
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int headNumber = _imageInfo.Heads > 1 ? trackNumber % 2 : 0;
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int cylinderNumber = _imageInfo.Heads > 1 ? trackNumber / 2 : trackNumber;
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AaruConsole.DebugWriteLine("d2f plugin", "Extra track 1 (head 0) present, reading");
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ReadTrack(stream, (int)_imageInfo.Cylinders, 0);
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}
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if(_badSectors[(cylinderNumber, headNumber, sectorNumber)])
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if(fheader.extraTracks[1] == 1)
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{
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AaruConsole.DebugWriteLine("d2f plugin", "Extra track 1 (head 1) present, reading");
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ReadTrack(stream, (int)_imageInfo.Cylinders, 1);
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}
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if(fheader.extraTracks[2] == 1)
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{
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AaruConsole.DebugWriteLine("d2f plugin", "Extra track 2 (head 0) present, reading");
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ReadTrack(stream, (int)_imageInfo.Cylinders + 1, 0);
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}
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if(fheader.extraTracks[3] == 1)
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{
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AaruConsole.DebugWriteLine("d2f plugin", "Extra track 2 (head 1) present, reading");
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ReadTrack(stream, (int)_imageInfo.Cylinders + 1, 1);
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}
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/* adjust number of cylinders */
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if(fheader.extraTracks[0] == 1 ||
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fheader.extraTracks[1] == 1)
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_imageInfo.Cylinders++;
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if(fheader.extraTracks[2] == 1 ||
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fheader.extraTracks[3] == 1)
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_imageInfo.Cylinders++;
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/* read the comment and directory data if present */
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if(fheader.extraFlags.HasFlag(ExtraFlag.Comment))
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{
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AaruConsole.DebugWriteLine("d2f plugin", "Comment present, reading");
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byte[] sheaderBuffer = new byte[6];
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stream.Read(sheaderBuffer, 0, 6);
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SectorHeader sheader = Marshal.ByteArrayToStructureLittleEndian<SectorHeader>(sheaderBuffer);
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if(sheader.flag != SectorFlag.Comment)
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{
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AaruConsole.DebugWriteLine("d2f plugin", "reading bad sector {0} ({1},{2},{3})", sectorAddress,
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cylinderNumber, headNumber, sectorNumber);
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AaruConsole.ErrorWriteLine($"Invalid sector type '{sheader.flag.ToString()}' encountered");
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/* if we have sector data, return that */
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if(_sectorCache.ContainsKey((cylinderNumber, headNumber, sectorNumber)))
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{
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buffer = _sectorCache[(cylinderNumber, headNumber, sectorNumber)];
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return ErrorNumber.InvalidArgument;
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}
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return ErrorNumber.NoError;
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}
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byte[] comm = new byte[sheader.crc];
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stream.Read(comm, 0, sheader.crc);
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comments += Encoding.ASCII.GetString(comm) + Environment.NewLine;
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}
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/* otherwise, return an empty sector */
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buffer = new byte[512];
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if(fheader.extraFlags.HasFlag(ExtraFlag.Directory))
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{
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AaruConsole.DebugWriteLine("d2f plugin", "Directory listing present, reading");
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byte[] sheaderBuffer = new byte[6];
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stream.Read(sheaderBuffer, 0, 6);
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SectorHeader sheader = Marshal.ByteArrayToStructureLittleEndian<SectorHeader>(sheaderBuffer);
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if(sheader.flag != SectorFlag.Directory)
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{
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AaruConsole.ErrorWriteLine($"Invalid sector type '{sheader.flag.ToString()}' encountered");
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return ErrorNumber.InvalidArgument;
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}
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byte[] dir = new byte[sheader.crc];
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stream.Read(dir, 0, sheader.crc);
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comments += Encoding.ASCII.GetString(dir);
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}
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if(comments.Length > 0)
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_imageInfo.Comments = comments;
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// save some variables for later use
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_fileHeader = fheader;
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_wcImageFilter = imageFilter;
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return ErrorNumber.InvalidArgument;
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}
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/// <inheritdoc />
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public ErrorNumber ReadSector(ulong sectorAddress, out byte[] buffer)
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{
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int sectorNumber = (int)(sectorAddress % _imageInfo.SectorsPerTrack) + 1;
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int trackNumber = (int)(sectorAddress / _imageInfo.SectorsPerTrack);
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int headNumber = _imageInfo.Heads > 1 ? trackNumber % 2 : 0;
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int cylinderNumber = _imageInfo.Heads > 1 ? trackNumber / 2 : trackNumber;
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if(_badSectors[(cylinderNumber, headNumber, sectorNumber)])
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{
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AaruConsole.DebugWriteLine("d2f plugin", "reading bad sector {0} ({1},{2},{3})", sectorAddress,
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cylinderNumber, headNumber, sectorNumber);
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/* if we have sector data, return that */
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if(_sectorCache.ContainsKey((cylinderNumber, headNumber, sectorNumber)))
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{
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buffer = _sectorCache[(cylinderNumber, headNumber, sectorNumber)];
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return ErrorNumber.NoError;
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}
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buffer = _sectorCache[(cylinderNumber, headNumber, sectorNumber)];
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/* otherwise, return an empty sector */
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buffer = new byte[512];
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return ErrorNumber.NoError;
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}
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/// <inheritdoc />
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public ErrorNumber ReadSectors(ulong sectorAddress, uint length, out byte[] buffer)
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buffer = _sectorCache[(cylinderNumber, headNumber, sectorNumber)];
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return ErrorNumber.NoError;
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}
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/// <inheritdoc />
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public ErrorNumber ReadSectors(ulong sectorAddress, uint length, out byte[] buffer)
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{
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buffer = null;
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if(sectorAddress > _imageInfo.Sectors - 1)
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return ErrorNumber.OutOfRange;
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if(sectorAddress + length > _imageInfo.Sectors)
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return ErrorNumber.OutOfRange;
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var ms = new MemoryStream();
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for(uint i = 0; i < length; i++)
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{
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buffer = null;
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ErrorNumber errno = ReadSector(sectorAddress + i, out byte[] sector);
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if(sectorAddress > _imageInfo.Sectors - 1)
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return ErrorNumber.OutOfRange;
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if(errno != ErrorNumber.NoError)
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return errno;
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if(sectorAddress + length > _imageInfo.Sectors)
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return ErrorNumber.OutOfRange;
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ms.Write(sector, 0, sector.Length);
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}
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var ms = new MemoryStream();
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buffer = ms.ToArray();
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for(uint i = 0; i < length; i++)
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return ErrorNumber.NoError;
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}
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/// <summary>Read a whole track and cache it</summary>
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/// <param name="stream">The stream to read from</param>
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/// <param name="cyl">The cylinder number of the track being read.</param>
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/// <param name="head">The head number of the track being read.</param>
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ErrorNumber ReadTrack(Stream stream, int cyl, int head)
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{
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byte[] sectorData;
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byte[] crc;
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short calculatedCRC;
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for(int sect = 1; sect < _imageInfo.SectorsPerTrack + 1; sect++)
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{
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/* read the sector header */
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byte[] sheaderBuffer = new byte[6];
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stream.Read(sheaderBuffer, 0, 6);
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SectorHeader sheader = Marshal.ByteArrayToStructureLittleEndian<SectorHeader>(sheaderBuffer);
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/* validate the sector header */
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if(sheader.cylinder != cyl ||
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sheader.head != head ||
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sheader.sector != sect)
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{
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ErrorNumber errno = ReadSector(sectorAddress + i, out byte[] sector);
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AaruConsole.
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ErrorWriteLine($"Unexpected sector encountered. Found CHS {sheader.cylinder},{sheader.head},{sheader.sector} but expected {cyl},{head},{sect}");
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if(errno != ErrorNumber.NoError)
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return errno;
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ms.Write(sector, 0, sector.Length);
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return ErrorNumber.InvalidArgument;
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}
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buffer = ms.ToArray();
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sectorData = new byte[512];
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return ErrorNumber.NoError;
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}
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/// <summary>Read a whole track and cache it</summary>
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/// <param name="stream">The stream to read from</param>
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/// <param name="cyl">The cylinder number of the track being read.</param>
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/// <param name="head">The head number of the track being read.</param>
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ErrorNumber ReadTrack(Stream stream, int cyl, int head)
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{
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byte[] sectorData;
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byte[] crc;
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short calculatedCRC;
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for(int sect = 1; sect < _imageInfo.SectorsPerTrack + 1; sect++)
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/* read the sector data */
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switch(sheader.flag)
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{
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/* read the sector header */
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byte[] sheaderBuffer = new byte[6];
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stream.Read(sheaderBuffer, 0, 6);
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case SectorFlag.Normal: /* read a normal sector and store it in cache */
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stream.Read(sectorData, 0, 512);
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_sectorCache[(cyl, head, sect)] = sectorData;
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CRC16IBMContext.Data(sectorData, 512, out crc);
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calculatedCRC = (short)((256 * crc[0]) | crc[1]);
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/*
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AaruConsole.DebugWriteLine("d2f plugin", "CHS {0},{1},{2}: Regular sector, stored CRC=0x{3:x4}, calculated CRC=0x{4:x4}",
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cyl, head, sect, sheader.crc, 256 * crc[0] + crc[1]);
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*/
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_badSectors[(cyl, head, sect)] = sheader.crc != calculatedCRC;
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SectorHeader sheader = Marshal.ByteArrayToStructureLittleEndian<SectorHeader>(sheaderBuffer);
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if(calculatedCRC != sheader.crc)
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AaruConsole.DebugWriteLine("d2f plugin",
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"CHS {0},{1},{2}: CRC mismatch: stored CRC=0x{3:x4}, calculated CRC=0x{4:x4}",
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cyl, head, sect, sheader.crc, calculatedCRC);
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/* validate the sector header */
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if(sheader.cylinder != cyl ||
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sheader.head != head ||
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sheader.sector != sect)
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{
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AaruConsole.
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ErrorWriteLine($"Unexpected sector encountered. Found CHS {sheader.cylinder},{sheader.head},{sheader.sector} but expected {cyl},{head},{sect}");
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break;
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case SectorFlag.BadSector:
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/*
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AaruConsole.DebugWriteLine("d2f plugin", "CHS {0},{1},{2}: Bad sector",
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cyl, head, sect);
|
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*/
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||||
_badSectors[(cyl, head, sect)] = true;
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||||
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break;
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case SectorFlag.RepeatByte:
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/*
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AaruConsole.DebugWriteLine("d2f plugin", "CHS {0},{1},{2}: RepeatByte sector, fill byte 0x{0:x2}",
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cyl, head, sect, sheader.crc & 0xff);
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*/
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for(int i = 0; i < 512; i++)
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sectorData[i] = (byte)(sheader.crc & 0xff);
|
||||
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_sectorCache[(cyl, head, sect)] = sectorData;
|
||||
_badSectors[(cyl, head, sect)] = false;
|
||||
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break;
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default:
|
||||
AaruConsole.ErrorWriteLine($"Invalid sector type '{sheader.flag.ToString()}' encountered");
|
||||
|
||||
return ErrorNumber.InvalidArgument;
|
||||
}
|
||||
|
||||
sectorData = new byte[512];
|
||||
|
||||
/* read the sector data */
|
||||
switch(sheader.flag)
|
||||
{
|
||||
case SectorFlag.Normal: /* read a normal sector and store it in cache */
|
||||
stream.Read(sectorData, 0, 512);
|
||||
_sectorCache[(cyl, head, sect)] = sectorData;
|
||||
CRC16IBMContext.Data(sectorData, 512, out crc);
|
||||
calculatedCRC = (short)((256 * crc[0]) | crc[1]);
|
||||
/*
|
||||
AaruConsole.DebugWriteLine("d2f plugin", "CHS {0},{1},{2}: Regular sector, stored CRC=0x{3:x4}, calculated CRC=0x{4:x4}",
|
||||
cyl, head, sect, sheader.crc, 256 * crc[0] + crc[1]);
|
||||
*/
|
||||
_badSectors[(cyl, head, sect)] = sheader.crc != calculatedCRC;
|
||||
|
||||
if(calculatedCRC != sheader.crc)
|
||||
AaruConsole.DebugWriteLine("d2f plugin",
|
||||
"CHS {0},{1},{2}: CRC mismatch: stored CRC=0x{3:x4}, calculated CRC=0x{4:x4}",
|
||||
cyl, head, sect, sheader.crc, calculatedCRC);
|
||||
|
||||
break;
|
||||
case SectorFlag.BadSector:
|
||||
/*
|
||||
AaruConsole.DebugWriteLine("d2f plugin", "CHS {0},{1},{2}: Bad sector",
|
||||
cyl, head, sect);
|
||||
*/
|
||||
_badSectors[(cyl, head, sect)] = true;
|
||||
|
||||
break;
|
||||
case SectorFlag.RepeatByte:
|
||||
/*
|
||||
AaruConsole.DebugWriteLine("d2f plugin", "CHS {0},{1},{2}: RepeatByte sector, fill byte 0x{0:x2}",
|
||||
cyl, head, sect, sheader.crc & 0xff);
|
||||
*/
|
||||
for(int i = 0; i < 512; i++)
|
||||
sectorData[i] = (byte)(sheader.crc & 0xff);
|
||||
|
||||
_sectorCache[(cyl, head, sect)] = sectorData;
|
||||
_badSectors[(cyl, head, sect)] = false;
|
||||
|
||||
break;
|
||||
default:
|
||||
AaruConsole.ErrorWriteLine($"Invalid sector type '{sheader.flag.ToString()}' encountered");
|
||||
|
||||
return ErrorNumber.InvalidArgument;
|
||||
}
|
||||
}
|
||||
|
||||
return ErrorNumber.NoError;
|
||||
}
|
||||
|
||||
return ErrorNumber.NoError;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user