[Trustedjava-support] "Unable to open TPM device" error while using TrouSerS TSS 0.2.9.1 & jTSSWrapper 0.3

[Nektarios I. <ine...@gm...>]

Hello I run on to this problem while I was trying to  perform an
"aik_create" cycle using jTPMTools but I decided to open a new mail thread
for it since this seems to be a different issue.

So this happens when my TPM emulator and TCSD are up and running. Btw.. all
jTSSWrapper 0.3 tests have run successfully with this configuration.

Although at a first glance this might seem to be an error with TrouSerS I
have a suspicion that this is caused by jTpmTools since

1) The first line of output (look below) reports that TrouSerS TSS is found
therefore although the error message is the same with that in the case of
Carl (
https://sourceforge.net/mailarchive/message.php?msg_id=300eed510707111800h71eadba1xf0113bd4b433ce65%40mail.gmail.combut),
it does NOT seem to be caused by the same reason.

2) all other commands using the exact same configuration work fine.
(e.g"pcr_read", "read_pubek", "version", "take_owner", "clear_owner").

I have looked at jTpmTools source code but unfortunately am not savvy enough
to figure out where the problem lies (or if it lies with jTpmTools at all).

Here is my input:

./jtt.sh aik_create -o theBIGsecret -a theAIKsecret -l myAIK_0

And what I get is:

15:50:28:601 [INFO] CommonSettings::getTssFactory (37): TrouSerS TSS found.
Using JNI bindings...
15:50:28:684 [WARN] TcTddlLinux::open (-1): Unable to open TPM device
file /dev/tpm.
Reason: /dev/tpm (Device or resource busy)

15:50:28:685 [ERROR] TcTcsi::<clinit> (-1): TCS startup failed.
15:50:28:685 [ERROR] TcTcsi::<clinit> (-1):
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(Unknown Source)
at iaik.tc.tss.impl.java.tddl.TcTddl.getInstance(Unknown Source)
at iaik.tc.tss.impl.java.tcs.TcTcsCommon.isOrdinalSupported(Unknown
Source)
at iaik.tc.tss.impl.java.tcs.tcsi.TcTcsi.<clinit>(Unknown Source)
at
iaik.tc.tss.impl.java.tsp.tcsbinding.local.TcTcsBindingLocal.TcsiOpenContext
(Unknown
Source)
at
iaik.tc.tss.impl.java.tsp.internal.TcTspInternal.TspContextOpen_Internal(
TcTspInternal.java:378)
at iaik.tc.tss.impl.java.tsp.TcContext.connect(Unknown Source)
at iaik.tc.tss.impl.java.tsp.TcContext.connect(Unknown Source)
at iaik.tc.apps.jtt.ek.ReadEkCert.getEkCert(ReadEkCert.java:41)
at iaik.tc.apps.jtt.aik.AikCreate.execute(AikCreate.java:255)
at iaik.tc.utils.cmdline.SubCommand.run(SubCommand.java:69)
at iaik.tc.utils.cmdline.SubCommandParser.parse(
SubCommandParser.java:41)
at iaik.tc.apps.JTpmTools.main(JTpmTools.java:110)

Any ideas?

Regards,

Nektarios