private void InterceptModeSense6(LogicalUnit logicalUnit, byte[] commandBytes, byte[] response)
{
ModeParameterHeader6 header = new ModeParameterHeader6(response, 0);
if (header.BlockDescriptorLength == ShortLBAModeParameterBlockDescriptor.Length)
{
ShortLBAModeParameterBlockDescriptor descriptor = new ShortLBAModeParameterBlockDescriptor(response, ModeParameterHeader6.Length);
logicalUnit.BlockSize = descriptor.LogicalBlockLength;
Log(Severity.Verbose, "LUN: {0}, BlockSize updated to {1}", logicalUnit.AssociatedLun, logicalUnit.BlockSize);
}
}
public SCSIStatusCodeName ModeSense6(ModeSense6CommandDescriptorBlock command, LUNStructure lun, out byte[] response)
{
if (lun >= m_disks.Count)
{
response = FormatSenseData(SenseDataParameter.GetIllegalRequestInvalidLUNSenseData());
return(SCSIStatusCodeName.CheckCondition);
}
ISCSIServer.Log("[ModeSense6] Page code: 0x{0}, Sub page code: 0x{1}", command.PageCode.ToString("X"), command.SubpageCode.ToString("X"));
byte[] pageData;
switch ((ModePageCodeName)command.PageCode)
{
case ModePageCodeName.CachingParametersPage:
{
CachingParametersPage page = new CachingParametersPage();
page.RCD = true;
pageData = page.GetBytes();
break;
}
case ModePageCodeName.ControlModePage:
{
ControlModePage page = new ControlModePage();
pageData = page.GetBytes();
break;
}
case ModePageCodeName.PowerConditionModePage:
{
if (command.SubpageCode == 0x00)
{
PowerConditionModePage page = new PowerConditionModePage();
pageData = page.GetBytes();
break;
}
else if (command.SubpageCode == 0x01)
{
PowerConsumptionModePage page = new PowerConsumptionModePage();
pageData = page.GetBytes();
break;
}
else
{
response = FormatSenseData(SenseDataParameter.GetIllegalRequestInvalidFieldInCDBSenseData());
ISCSIServer.Log("[ModeSense6] Power condition subpage 0x{0} is not implemented", command.SubpageCode.ToString("x"));
return(SCSIStatusCodeName.CheckCondition);
}
}
case ModePageCodeName.InformationalExceptionsControlModePage:
{
InformationalExceptionsControlModePage page = new InformationalExceptionsControlModePage();
pageData = page.GetBytes();
break;
}
case ModePageCodeName.ReturnAllPages:
{
CachingParametersPage page1 = new CachingParametersPage();
page1.RCD = true;
InformationalExceptionsControlModePage page2 = new InformationalExceptionsControlModePage();
pageData = new byte[page1.Length + page2.Length];
Array.Copy(page1.GetBytes(), pageData, page1.Length);
Array.Copy(page2.GetBytes(), 0, pageData, page1.Length, page2.Length);
break;
}
case ModePageCodeName.VendorSpecificPage:
{
// Microsoft iSCSI Target running under Windows 2000 will request this page, we immitate Microsoft iSCSI Target by sending back an empty page
VendorSpecificPage page = new VendorSpecificPage();
pageData = page.GetBytes();
break;
}
default:
{
response = FormatSenseData(SenseDataParameter.GetIllegalRequestInvalidFieldInCDBSenseData());
ISCSIServer.Log("[ModeSense6] ModeSense6 page 0x{0} is not implemented", command.PageCode.ToString("x"));
return(SCSIStatusCodeName.CheckCondition);
}
}
ModeParameterHeader6 header = new ModeParameterHeader6();
header.WP = m_disks[lun].IsReadOnly; // Write protected, even when set to true, Windows does not always prevent the disk from being written to.
header.DPOFUA = true; // Microsoft iSCSI Target support this
byte[] descriptorBytes = new byte[0];
if (!command.DBD)
{
ShortLBAModeParameterBlockDescriptor descriptor = new ShortLBAModeParameterBlockDescriptor();
descriptor.LogicalBlockLength = (uint)m_disks[lun].BytesPerSector;
descriptorBytes = descriptor.GetBytes();
}
header.BlockDescriptorLength = (byte)descriptorBytes.Length;
header.ModeDataLength += (byte)(descriptorBytes.Length + pageData.Length);
response = new byte[1 + header.ModeDataLength];
Array.Copy(header.GetBytes(), 0, response, 0, header.Length);
Array.Copy(descriptorBytes, 0, response, header.Length, descriptorBytes.Length);
Array.Copy(pageData, 0, response, header.Length + descriptorBytes.Length, pageData.Length);
return(SCSIStatusCodeName.Good);
}
