Need Help Retreiving Data -- Lost in buffer reading

[DougCa]

Help Please!!!!! I am lost in the structures........

I am trying to get the Power On Hours of a Hard Disk into nVal as shown below. The Attributes are returned sucessfully, but I am lost tring to get the Power On Hours into nVal. Power On Hours is the ninth attribute, I think. You can check out the following URL to see SMART.

http://support.microsoft.com/default.aspx?scid=KB;en-us;q208048

See code below. What am I doing wrong? If I get this working I can also get the temperature.


SNMP_ERRSTAT DCdsContentServerTemperatures::OnGet_CdsContentServerHDTemp(tUint32 transactionId, tASN_INT& nVal)

{

HANDLE hSMARTIOCTL = 0;

DWORD cbBytesReturned;

GETVERSIONOUTPARAMS VersionParams;

SENDCMDINPARAMS scip;

SENDCMDOUTPARAMS OutCmd;

BYTE bDfpDriveMap = 0;

BYTE bSuccess = 1;

BYTE bIDCmd = 236; // IDE IDENTIFY cmd

int i =1;

PDRIVEATTRIBUTE pDA;



// Try to get a handle to SMART IOCTL, report failure and exit if

// can't.

if ((hSMARTIOCTL = CreateFile("\\\\.\\PhysicalDrive0",GENERIC_READ | GENERIC_WRITE,FILE_SHARE_READ|FILE_SHARE_WRITE,NULL,

OPEN_EXISTING,0,NULL)) == INVALID_HANDLE_VALUE)

{

nVal = 0; //No Success -- Invalid Handle

}

if (hSMARTIOCTL != INVALID_HANDLE_VALUE) //Success -- Valid Handle

{

// Success -- Setup for Read Attributes Command


memset(AttrOutCmd, 0, sizeof(AttrOutCmd));

if ( !(bSuccess = DoReadAttributesCmd(hSMARTIOCTL,

&scip,

(PSENDCMDOUTPARAMS)&AttrOutCmd,

1))) // Drive Number (Physical Drive 0 is Drive 1)

{

nVal = 0; //Can't Read Attributes

}

else

{ // Read Successful -- Get HD Temperature -- This is where I need help!!

nVal = *((PSENDCMDOUTPARAMS)AttrOutCmd[10])->bBuffer;


} // End if Do Read Attributes

// Close SMART.

if (hSMARTIOCTL)

CloseHandle(hSMARTIOCTL);

} // End if Success -- Valid Handle

return eSNMP_ERRSTAT_NO_ERROR;

}

/****************************************************************************

*

* DoReadAttributesCmd

*

* FUNCTION: Send a SMART_READ_ATTRIBUTE_VALUES command to the drive

* bDriveNum = 0-3

*

****************************************************************************/

BOOL DoReadAttributesCmd(HANDLE hSMARTIOCTL, PSENDCMDINPARAMS pSCIP, PSENDCMDOUTPARAMS pSCOP, BYTE bDriveNum)

{

DWORD cbBytesReturned;

//

// Set up data structures for Read Attributes SMART Command.

//

pSCIP->cBufferSize = READ_ATTRIBUTE_BUFFER_SIZE;

pSCIP->irDriveRegs.bFeaturesReg = SMART_READ_ATTRIBUTE_VALUES;

pSCIP->irDriveRegs.bSectorCountReg = 1;

pSCIP->irDriveRegs.bSectorNumberReg = 1;

pSCIP->irDriveRegs.bCylLowReg = SMART_CYL_LOW;

pSCIP->irDriveRegs.bCylHighReg = SMART_CYL_HI;

//

// Compute the drive number.

//

//pSCIP->irDriveRegs.bDriveHeadReg = 0xA0 | ((bDriveNum & 1) << 4);

pSCIP->irDriveRegs.bCommandReg = IDE_EXECUTE_SMART_FUNCTION;

pSCIP->bDriveNumber = 1;

return ( DeviceIoControl(hSMARTIOCTL, DFP_RECEIVE_DRIVE_DATA,

(LPVOID)pSCIP, sizeof(SENDCMDINPARAMS) - 1,

(LPVOID)pSCOP, sizeof(SENDCMDOUTPARAMS) + READ_ATTRIBUTE_BUFFER_SIZE - 1,

&cbBytesReturned, NULL) );

}