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Support resume in SSC dumping.

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Natalia Portillo
2019-05-01 01:19:37 +01:00
parent 037f2d7ef3
commit f5c1648e27
1 changed files with 100 additions and 1 deletions
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101
DiscImageChef.Core/Devices/Dumping/SSC.cs
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@@ -35,6 +35,7 @@ using System.IO;
using System.Threading;
using System.Xml.Serialization;
using DiscImageChef.CommonTypes;
using DiscImageChef.CommonTypes.Extents;
using DiscImageChef.CommonTypes.Interfaces;
using DiscImageChef.CommonTypes.Metadata;
using DiscImageChef.CommonTypes.Structs;
@@ -263,7 +264,7 @@ 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 != null ? decMode.Value.Header.BlockDescriptors[0].BlockLength : (uint)0;
blockSize = decMode.Value.Header.BlockDescriptors?[0].BlockLength ?? 0;
UpdateStatus?.Invoke($"Device reports {blocks} blocks ({blocks * blockSize} bytes).");
}
@@ -394,6 +395,101 @@ namespace DiscImageChef.Core.Devices.Dumping
}
}
DumpHardwareType currentTry = null;
ExtentsULong extents = null;
ResumeSupport.Process(true, dev.IsRemovable, blocks, dev.Manufacturer, dev.Model, dev.Serial,
dev.PlatformId, ref resume, ref currentTry, ref extents, true);
bool rewind = false;
if(resume.NextBlock > 0)
{
UpdateStatus?.Invoke($"Positioning tape to block {resume.NextBlock}.");
dumpLog.WriteLine("Positioning tape to block {0}.", resume.NextBlock);
if(resume.NextBlock > uint.MaxValue)
{
sense = dev.Locate16(out senseBuf, resume.NextBlock, dev.Timeout, out _);
if(!sense)
{
sense = dev.ReadPositionLong(out cmdBuf, out senseBuf, dev.Timeout, out _);
if(sense)
{
if(!force)
{
dumpLog.WriteLine("Could not check current position, unable to resume. If you want to continue use force.");
StoppingErrorMessage?.Invoke("Could not check current position, unable to resume. If you want to continue use force.");
}
else
{
dumpLog.WriteLine("Could not check current position, unable to resume. Dumping from the start.");
ErrorMessage?.Invoke("Could not check current position, unable to resume. Dumping from the start.");
rewind = true;
}
}
else
{
ulong position = Swapping.Swap(BitConverter.ToUInt64(cmdBuf, 8));
if(position != resume.NextBlock)
{
if(!force)
{
dumpLog.WriteLine("Current position is not as expected, unable to resume. If you want to continue use force.");
StoppingErrorMessage?.Invoke("Current position is not as expected, unable to resume. If you want to continue use force.");
}
else
{
dumpLog.WriteLine("Current position is not as expected, unable to resume. Dumping from the start.");
ErrorMessage?.Invoke("Current position is not as expected, unable to resume. Dumping from the start.");
rewind = true;
}
}
}
}
else
{
if(!force)
{
dumpLog.WriteLine("Cannot reposition tape, unable to resume. If you want to continue use force.");
StoppingErrorMessage?.Invoke("Cannot reposition tape, unable to resume. If you want to continue use force.");
}
else
{
dumpLog.WriteLine("Cannot reposition tape, unable to resume. Dumping from the start.");
ErrorMessage?.Invoke("Cannot reposition tape, unable to resume. Dumping from the start.");
rewind = true;
}
}
}
}
if(rewind)
{
do
{
Thread.Sleep(1000);
PulseProgress?.Invoke("Rewinding, please wait...");
dev.RequestSense(out senseBuf, dev.Timeout, out duration);
fxSense = Sense.DecodeFixed(senseBuf, out strSense);
}
while(fxSense.HasValue && fxSense.Value.ASC == 0x00 &&
(fxSense.Value.ASCQ == 0x1A || fxSense.Value.ASCQ == 0x19));
// And yet, did not rewind!
if(fxSense.HasValue && (fxSense.Value.ASC == 0x00 && fxSense.Value.ASCQ != 0x04 ||
fxSense.Value.ASC != 0x00))
{
StoppingErrorMessage?.Invoke("Drive could not rewind, please correct. Sense follows..." +
Environment.NewLine +
strSense);
dumpLog.WriteLine("Drive could not rewind, please correct. Sense follows...");
dumpLog.WriteLine("Device not ready. Sense {0}h ASC {1:X2}h ASCQ {2:X2}h",
fxSense.Value.SenseKey, fxSense.Value.ASC, fxSense.Value.ASCQ);
return;
}
}
bool ret = outputPlugin.Create(outputPath, dskType, formatOptions, 0, 0);
// Cannot create image
@@ -567,6 +663,7 @@ namespace DiscImageChef.Core.Devices.Dumping
outputPlugin.WriteSector(cmdBuf, currentBlock);
currentBlock++;
resume.NextBlock++;
currentSpeedSize += blockSize;
double elapsed = (DateTime.UtcNow - timeSpeedStart).TotalSeconds;
@@ -584,6 +681,8 @@ namespace DiscImageChef.Core.Devices.Dumping
currentTapePartition.LastBlock = currentBlock - 1;
(outputPlugin as IWritableTapeImage).AddPartition(currentTapePartition);
outputPlugin.SetDumpHardware(resume.Tries);
if(preSidecar != null) outputPlugin.SetCicmMetadata(preSidecar);
dumpLog.WriteLine("Closing output file.");
UpdateStatus?.Invoke("Closing output file.");
DateTime closeStart = DateTime.Now;