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Handle tape drives without additional sense and that only

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support fixed size reading.
This commit is contained in:
Natalia Portillo
2017-06-05 15:57:10 +01:00
parent ce3e941e1c
commit af244b0055
1 changed files with 75 additions and 8 deletions
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83
DiscImageChef.Core/Devices/Dumping/SSC.cs
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@@ -83,7 +83,7 @@ namespace DiscImageChef.Core.Devices.Dumping
}
// Not in BOM/P
if(fxSense.HasValue && fxSense.Value.ASC == 0x00 && fxSense.Value.ASCQ != 0x04)
if(fxSense.HasValue && fxSense.Value.ASC == 0x00 && fxSense.Value.ASCQ != 0x00 && fxSense.Value.ASCQ != 0x04 && fxSense.Value.SenseKey != Decoders.SCSI.SenseKeys.IllegalRequest)
{
DicConsole.Write("Rewinding, please wait...");
// Rewind, let timeout apply
@@ -122,7 +122,8 @@ namespace DiscImageChef.Core.Devices.Dumping
// READ POSITION is mandatory starting SCSI-2, so do not cry if the drive does not recognize the command (SCSI-1 or earlier)
// Anyway, <=SCSI-1 tapes do not support partitions
fxSense = Decoders.SCSI.Sense.DecodeFixed(senseBuf, out strSense);
if(fxSense.HasValue && ((fxSense.Value.ASC == 0x20 && fxSense.Value.ASCQ != 0x00) || fxSense.Value.ASC != 0x20))
if(fxSense.HasValue && ((fxSense.Value.ASC == 0x20 && fxSense.Value.ASCQ != 0x00) || fxSense.Value.ASC != 0x20 && fxSense.Value.SenseKey != Decoders.SCSI.SenseKeys.IllegalRequest))
{
DicConsole.ErrorWriteLine("Could not get position. Sense follows...");
DicConsole.ErrorWriteLine("{0}", strSense);
@@ -237,7 +238,10 @@ namespace DiscImageChef.Core.Devices.Dumping
scsiMediumTypeTape = (byte)decMode.Value.Header.MediumType;
if(decMode.Value.Header.BlockDescriptors != null && decMode.Value.Header.BlockDescriptors.Length >= 1)
scsiDensityCodeTape = (byte)decMode.Value.Header.BlockDescriptors[0].Density;
blockSize = decMode.Value.Header.BlockDescriptors[0].BlockLength;
}
else
blockSize = 1;
if(dskType == MediaType.Unknown)
dskType = MediaTypeFromSCSI.Get((byte)dev.SCSIType, dev.Manufacturer, dev.Model, scsiMediumTypeTape, scsiDensityCodeTape, blocks, blockSize);
@@ -249,11 +253,74 @@ namespace DiscImageChef.Core.Devices.Dumping
ulong currentFile = 0;
byte currentPartition = 0;
byte totalPartitions = 1; // TODO: Handle partitions.
blockSize = 1;
ulong currentSize = 0;
ulong currentPartitionSize = 0;
ulong currentFileSize = 0;
bool fixedLen = false;
uint transferLen = blockSize;
sense = dev.Read6(out cmdBuf, out senseBuf, false, fixedLen, transferLen, blockSize, dev.Timeout, out duration);
if(sense)
{
fxSense = Decoders.SCSI.Sense.DecodeFixed(senseBuf, out strSense);
if(fxSense.HasValue)
{
if(fxSense.Value.SenseKey == Decoders.SCSI.SenseKeys.IllegalRequest)
{
sense = dev.Space(out senseBuf, SscSpaceCodes.LogicalBlock, -1, dev.Timeout, out duration);
if(sense)
{
fxSense = Decoders.SCSI.Sense.DecodeFixed(senseBuf, out strSense);
if(!fxSense.HasValue || !fxSense.Value.EOM)
{
DicConsole.WriteLine();
DicConsole.ErrorWriteLine("Drive could not return back. Sense follows...");
DicConsole.ErrorWriteLine("{0}", strSense);
return;
}
}
fixedLen = true;
transferLen = 1;
sense = dev.Read6(out cmdBuf, out senseBuf, false, fixedLen, transferLen, blockSize, dev.Timeout, out duration);
if(sense)
{
DicConsole.WriteLine();
DicConsole.ErrorWriteLine("Drive could not read. Sense follows...");
DicConsole.ErrorWriteLine("{0}", strSense);
return;
}
}
else
{
DicConsole.WriteLine();
DicConsole.ErrorWriteLine("Drive could not read. Sense follows...");
DicConsole.ErrorWriteLine("{0}", strSense);
return;
}
}
else
{
DicConsole.WriteLine();
DicConsole.ErrorWriteLine("Cannot read device, don't know why, exiting...");
return;
}
}
sense = dev.Space(out senseBuf, SscSpaceCodes.LogicalBlock, -1, dev.Timeout, out duration);
if(sense)
{
fxSense = Decoders.SCSI.Sense.DecodeFixed(senseBuf, out strSense);
if(!fxSense.HasValue || !fxSense.Value.EOM)
{
DicConsole.WriteLine();
DicConsole.ErrorWriteLine("Drive could not return back. Sense follows...");
DicConsole.ErrorWriteLine("{0}", strSense);
return;
}
}
Checksum partitionChk;
Checksum fileChk;
List<TapePartitionType> partitions = new List<TapePartitionType>();
@@ -353,7 +420,7 @@ namespace DiscImageChef.Core.Devices.Dumping
DicConsole.Write("\rReading block {0} ({1:F3} MiB/sec.)", currentBlock, currentSpeed);
sense = dev.Read6(out cmdBuf, out senseBuf, false, blockSize, blockSize, dev.Timeout, out duration);
sense = dev.Read6(out cmdBuf, out senseBuf, false, fixedLen, transferLen, blockSize, dev.Timeout, out duration);
totalDuration += duration;
if(sense)
@@ -394,7 +461,7 @@ namespace DiscImageChef.Core.Devices.Dumping
}
// For sure this is an end-of-tape/partition
if(fxSense.Value.ASC == 0x00 && (fxSense.Value.ASCQ == 0x02 || fxSense.Value.ASCQ == 0x05))
if(fxSense.Value.ASC == 0x00 && (fxSense.Value.ASCQ == 0x02 || fxSense.Value.ASCQ == 0x05 || fxSense.Value.EOM))
{
// TODO: Detect end of partition
endOfMedia = true;
@@ -408,7 +475,7 @@ namespace DiscImageChef.Core.Devices.Dumping
}
if((fxSense.Value.SenseKey == Decoders.SCSI.SenseKeys.NoSense || fxSense.Value.SenseKey == Decoders.SCSI.SenseKeys.RecoveredError) &&
(fxSense.Value.ASCQ == 0x02 || fxSense.Value.ASCQ == 0x05))
(fxSense.Value.ASCQ == 0x02 || fxSense.Value.ASCQ == 0x05 || fxSense.Value.EOM))
{
// TODO: Detect end of partition
endOfMedia = true;
@@ -416,7 +483,7 @@ namespace DiscImageChef.Core.Devices.Dumping
}
if((fxSense.Value.SenseKey == Decoders.SCSI.SenseKeys.NoSense || fxSense.Value.SenseKey == Decoders.SCSI.SenseKeys.RecoveredError) &&
fxSense.Value.ASCQ == 0x01)
(fxSense.Value.ASCQ == 0x01 || fxSense.Value.Filemark))
{
currentTapeFile.Checksums = fileChk.End().ToArray();
currentTapeFile.EndBlock = (long)(currentBlock - 1);
@@ -444,7 +511,7 @@ namespace DiscImageChef.Core.Devices.Dumping
// TODO: Add error recovering for tapes
fxSense = Decoders.SCSI.Sense.DecodeFixed(senseBuf, out strSense);
DicConsole.ErrorWriteLine("Drive could not read block. Sense follows...");
DicConsole.ErrorWriteLine("{0}", strSense);
DicConsole.ErrorWriteLine("{0} {1}", fxSense.Value.SenseKey, strSense);
return;
}