public SCSIStatusCodeName Read(SCSICommandDescriptorBlock command, LUNStructure lun, out byte[] response)
{
if (lun >= m_disks.Count)
{
response = FormatSenseData(SenseDataParameter.GetIllegalRequestInvalidLUNSenseData());
return(SCSIStatusCodeName.CheckCondition);
}
Disk disk = m_disks[lun];
int sectorCount = (int)command.TransferLength;
try
{
lock (IOLock)
{
response = disk.ReadSectors((long)command.LogicalBlockAddress64, sectorCount);
}
return(SCSIStatusCodeName.Good);
}
catch (ArgumentOutOfRangeException)
{
ISCSIServer.Log("[Read] Read error: LBA out of range");
response = FormatSenseData(SenseDataParameter.GetIllegalRequestLBAOutOfRangeSenseData());
return(SCSIStatusCodeName.CheckCondition);
}
catch (IOException ex)
{
int error = Marshal.GetHRForException(ex);
if (error == (int)Win32Error.ERROR_CRC)
{
ISCSIServer.Log("[Read] Read error: CRC error");
response = FormatSenseData(SenseDataParameter.GetWriteFaultSenseData());
return(SCSIStatusCodeName.CheckCondition);
}
else
{
ISCSIServer.Log("[Read] Read error: {0}", ex.ToString());
response = FormatSenseData(SenseDataParameter.GetMediumErrorUnrecoverableReadErrorSenseData());
return(SCSIStatusCodeName.CheckCondition);
}
}
}
public SCSIStatusCodeName Write(SCSICommandDescriptorBlock command, LUNStructure lun, byte[] data, out byte[] response)
{
if (lun >= m_disks.Count)
{
response = FormatSenseData(SenseDataParameter.GetIllegalRequestInvalidLUNSenseData());
return(SCSIStatusCodeName.CheckCondition);
}
Disk disk = m_disks[lun];
if (disk.IsReadOnly)
{
SenseDataParameter senseData = SenseDataParameter.GetDataProtectSenseData();
response = senseData.GetBytes();
return(SCSIStatusCodeName.CheckCondition);
}
try
{
lock (IOLock)
{
disk.WriteSectors((long)command.LogicalBlockAddress64, data);
}
response = new byte[0];
return(SCSIStatusCodeName.Good);
}
catch (ArgumentOutOfRangeException)
{
ISCSIServer.Log("[Write] Write error: LBA out of range");
response = FormatSenseData(SenseDataParameter.GetIllegalRequestLBAOutOfRangeSenseData());
return(SCSIStatusCodeName.CheckCondition);
}
catch (IOException ex)
{
ISCSIServer.Log("[Write] Write error: {0}", ex.ToString());
response = FormatSenseData(SenseDataParameter.GetMediumErrorWriteFaultSenseData());
return(SCSIStatusCodeName.CheckCondition);
}
}