public SCSIStatusCodeName Write(SCSICommandDescriptorBlock command, LUNStructure lun, byte[] data, out byte[] response)
{
Disk disk = m_disks[lun];
if (disk.IsReadOnly)
{
Log(Severity.Verbose, "LUN {0}: Refused attempt to write to a read-only disk", lun);
SenseDataParameter senseData = SenseDataParameter.GetDataProtectSenseData();
response = senseData.GetBytes();
return(SCSIStatusCodeName.CheckCondition);
}
Log(Severity.Verbose, "LUN {0}: Writing {1} blocks starting from LBA {2}", (ushort)lun, command.TransferLength, (long)command.LogicalBlockAddress64);
try
{
disk.WriteSectors((long)command.LogicalBlockAddress64, data);
response = new byte[0];
return(SCSIStatusCodeName.Good);
}
catch (ArgumentOutOfRangeException)
{
Log(Severity.Error, "Write error: LBA out of range");
response = FormatSenseData(SenseDataParameter.GetIllegalRequestLBAOutOfRangeSenseData());
return(SCSIStatusCodeName.CheckCondition);
}
catch (IOException ex)
{
Log(Severity.Error, "Write error: {0}", ex.ToString());
response = FormatSenseData(SenseDataParameter.GetMediumErrorWriteFaultSenseData());
return(SCSIStatusCodeName.CheckCondition);
}
}
public static byte[] FormatSenseData(SenseDataParameter senseData)
{
byte[] senseDataBytes = senseData.GetBytes();
byte[] result = new byte[senseDataBytes.Length + 2];
BigEndianWriter.WriteUInt16(result, 0, (ushort)senseDataBytes.Length);
ByteWriter.WriteBytes(result, 2, senseDataBytes);
return(result);
}