Mega Code Archive
SCSI 2 device serial number
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Title: SCSI-2 device serial number
Question: For IDE harddisk you can use S.M.A.R.T. API function for
extracting serial number. For SCSI it does not work.
Answer:
program ScsiSN;
// PURPOSE: Simple console application that display SCSI harddisk serial number
{$APPTYPE CONSOLE}
uses
Windows, SysUtils;
//-------------------------------------------------------------
function GetDeviceHandle( sDeviceName : String ) : THandle;
begin
Result := CreateFile( PChar('\\.\'+sDeviceName),
GENERIC_READ or GENERIC_WRITE,
FILE_SHARE_READ or FILE_SHARE_WRITE,
nil, OPEN_EXISTING, 0, 0 )
end;
//-------------------------------------------------------------
function ScsiHddSerialNumber( DeviceHandle : THandle ) : String;
{$ALIGN ON}
type
TScsiPassThrough = record
Length : Word;
ScsiStatus : Byte;
PathId : Byte;
TargetId : Byte;
Lun : Byte;
CdbLength : Byte;
SenseInfoLength : Byte;
DataIn : Byte;
DataTransferLength : ULONG;
TimeOutValue : ULONG;
DataBufferOffset : DWORD;
SenseInfoOffset : ULONG;
Cdb : Array[0..15] of Byte;
end;
TScsiPassThroughWithBuffers = record
spt : TScsiPassThrough;
bSenseBuf : Array[0..31] of Byte;
bDataBuf : Array[0..191] of Byte;
end;
{ALIGN OFF}
var dwReturned : DWORD;
len : DWORD;
Buffer : Array[ 0..SizeOf(TScsiPassThroughWithBuffers)+
SizeOf(TScsiPassThrough)-1] of Byte;
sptwb : TScsiPassThroughWithBuffers absolute Buffer;
begin
Result := '';
FillChar(Buffer,SizeOf(Buffer),#0);
with sptwb.spt do
begin
Length := SizeOf(TScsiPassThrough);
CdbLength := 6; // CDB6GENERIC_LENGTH
SenseInfoLength := 24;
DataIn := 1; // SCSI_IOCTL_DATA_IN
DataTransferLength := 192;
TimeOutValue := 2;
DataBufferOffset := PChar(@sptwb.bDataBuf)-PChar(@sptwb);
SenseInfoOffset := PChar(@sptwb.bSenseBuf)-PChar(@sptwb);
Cdb[0] := $12; // OperationCode := SCSIOP_INQUIRY;
Cdb[1] := $01; // Flags := CDB_INQUIRY_EVPD; Vital product data
Cdb[2] := $80; // PageCode Unit serial number
Cdb[4] := 192; // AllocationLength
end;
len := sptwb.spt.DataBufferOffset+sptwb.spt.DataTransferLength;
if DeviceIoControl( DeviceHandle, $0004d004, @sptwb, SizeOf(TScsiPassThrough), @sptwb, len, dwReturned, nil )
and ((PChar(@sptwb.bDataBuf)+1)^=#$80)
then
SetString( Result, PChar(@sptwb.bDataBuf)+4,
Ord((PChar(@sptwb.bDataBuf)+3)^) );
end;
//=============================================================
var
hDevice : THandle = 0;
sSerNum, sDeviceName : String;
begin
sDeviceName := ParamStr(1);
if sDeviceName='' then
begin
WriteLn;
WriteLn('Display SCSI-2 device serial number.');
WriteLn;
WriteLn('Using:');
WriteLn;
if Win32Platform=VER_PLATFORM_WIN32_NT then // Windows NT/2000
WriteLn(' ScsiSN PhysicalDrive0')
else
WriteLn(' ScsiSN C:');
WriteLn(' ScsiSN Cdrom0');
WriteLn(' ScsiSN Tape0');
WriteLn;
Exit;
end;
hDevice := GetDeviceHandle(sDeviceName);
if hDevice=INVALID_HANDLE_VALUE then
WriteLn('Error on GetDeviceHandle: ',SysErrorMessage(GetLastError))
else
try
sSerNum := ScsiHddSerialNumber(hDevice);
if sSerNum='' then
WriteLn('Error on DeviceIoControl: ',
SysErrorMessageGetLastError))
else
WriteLn('Device '+sDeviceName
+' serial number = "',sSerNum,'"');
finally
CloseHandle(hDevice);
end;
end.
// For more information about SCSI commands:
// ftp://ftp.t10.org/t10/drafts/scsi-1/
// ftp://ftp.t10.org/t10/drafts/spc/
// ftp://ftp.t10.org/t10/drafts/spc2/
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