[Trustedjava-support] Unable to open TPM device file /dev/tpm0 through Trusted JAVA

[waqar a. <afr...@gm...>]

Hello Dear List

I am using Trusted JAVA to Extend a byte array to the PCR 11 of the TPM but
when I do I get the Following Error:

===========================================================================================

12:09:24:305 [WARN] TcTddlLinux::open (106):    Unable to open TPM device
file /dev/tpm.
Reason: /dev/tpm (Device or resource busy)

12:09:24:306 [ERROR] TcTcsi::<clinit> (129):    TCS startup failed.
12:09:24:307 [ERROR] TcTcsi::<clinit> (129):
TSS Error:
error layer:                0x1000 (TDDL)
error code (without layer): 0x87
error code (full):          0x1087
error message: The request could not be performed because of an IO device
error.
additional info: Unable to open TPM device file /dev/tpm.
Reason: /dev/tpm (Device or resource busy)


iaik.tc.tss.api.exceptions.tcs.TcTddlException:
TSS Error:
error layer:                0x1000 (TDDL)
error code (without layer): 0x87
error code (full):          0x1087
error message: The request could not be performed because of an IO device
error.
additional info: Unable to open TPM device file /dev/tpm.
Reason: /dev/tpm (Device or resource busy)


    at iaik.tc.tss.impl.java.tddl.TcTddlLinux.open(TcTddlLinux.java:107)
    at iaik.tc.tss.impl.java.tddl.TcTddl.getInstance(TcTddl.java:44)
    at
iaik.tc.tss.impl.java.tcs.TcTcsCommon.isOrdinalSupported(TcTcsCommon.java:66)
    at iaik.tc.tss.impl.java.tcs.tcsi.TcTcsi.<clinit>(TcTcsi.java:112)
    at
iaik.tc.tss.impl.java.tsp.tcsbinding.local.TcTcsBindingLocal.TcsiOpenContext(TcTcsBindingLocal.java:177)
    at
iaik.tc.tss.impl.java.tsp.internal.TcTspInternal.TspContextOpen_Internal(TcTspInternal.java:378)
    at iaik.tc.tss.impl.java.tsp.TcContext.connect(TcContext.java:167)

===========================================================================================

The Part of Code for PCR Extending is:

===========================================================================================

    int pcrIndex = 11;
    byte[] byteData = xmlFromNode.getBytes();

    TcBlobData data = TcBlobData.newByteArray(byteData);

    try
    {
        TcTssAbstractFactory factory = new TcTssLocalCallFactory();
        TcIContext context = factory.newContextObject();

        context.connect("localhost");
        TcITpm tpm = context.getTpmObject();
        TcTssPcrEvent event = new TcTssPcrEvent();
        event.setPcrIndex(pcrIndex);
        event.setEventType(TcTssConstants.TSS_EV_PLATFORM_SPECIFIC);

event.setVersionInfo(tpm.getCapabilityVersion(TcTssConstants.TSS_TPMCAP_VERSION,
null));
//      event.setEvent(TcBlobData.newString(logEntry));

        TcBlobData oldPcrContent = tpm.pcrRead(pcrIndex);

        try
        {
            tpm.pcrExtend(pcrIndex, data.sha1(), event);
        }

        catch (TcTssException e)
        {
            if (e.getErrCode() == TcTssErrors.TSS_E_NOTIMPL)
            {
                System.out.println("\n\nNote: This TSS has no event log
support\n\n");
            }
            else
            {
                throw e;
            }
        }

        context.closeContext();

        System.out.println("\n\nExtendPcr succeeded\n\n");

        if (event != null)
        {
            TcBlobData newPcrContentPlain = TcBlobData.newUINT32(pcrIndex);
            newPcrContentPlain.append(data.sha1());

newPcrContentPlain.append(TcBlobData.newUINT32(event.getEventType()));
            newPcrContentPlain.append(event.getEvent());
            oldPcrContent.append(newPcrContentPlain.sha1());
        }
        else
        {
            oldPcrContent.append(data.sha1());
        }
            System.out.println("expected new content of PCR " + pcrIndex +
": "
                    + oldPcrContent.sha1().toHexStringNoWrap());

    }
    catch (TcTssException e)
    {
        if (e.getErrLayer() == TcTssErrors.TSS_LAYER_TPM)
        {
            System.out.println("can't extend this pcr - wrong locality");
        }
        else
        {
            System.out.println("Error");
        }
        }
    }

===========================================================================================

I tried with both Hardware TPM and TPM Emulator but still getting the Error,
The above Error is of Software TPM (Both Error messages are exactly the Same
just for hardware TPM its tpm0)

Any Idea or Hint what could be the Problem?

Thanx in Advance

-- 
*Waqar Afridi*