[Xen-devel] [PATCH][VTPM]fix GetCapabilityOwner function

[Kouichi Yasaki <yasaki.kouichi@xxxxxxxxxxxxxx>]

Hi,

  GetCapabilityOwner function's behavior of vtpm is different from that of
real tpm device. By the difference, TPM Manager on HVM domain could not
detect whether TPM device has an owner or not.

  [TPM Manager]
  http://sourceforge.net/projects/tpmmanager

Attached patch fix the difference.

Signed-off-by: Kouichi YASAKI <yasaki.kouichi@xxxxxxxxxxxxxx>

Thanks
  Kouichi YASAKI

diff -r 7fbc521b07a9 tools/vtpm/tpm_emulator.patch
--- a/tools/vtpm/tpm_emulator.patch     Thu Dec 27 13:00:40 2007 +0000
+++ b/tools/vtpm/tpm_emulator.patch     Fri Dec 28 22:59:52 2007 +0900
@@ -547,6 +547,21 @@ diff -uprN orig/tpm_emulator-0.4/README 
  Installation
  --------------------------------------------------------------------------
  The compilation and installation process uses the build environment for 
+diff -uprN orig/tpm_emulator-0.4/tpm/tpm_capability.c 
tpm_emulator/tpm/tpm_capability.c
+--- orig/tpm_emulator-0.4/tpm/tpm_capability.c 2006-06-23 19:37:07.000000000 
+0900
++++ tpm_emulator/tpm/tpm_capability.c  2007-12-28 22:50:19.000000000 +0900
+@@ -701,7 +701,10 @@ TPM_RESULT TPM_GetCapabilityOwner(TPM_VE
+   TPM_RESULT res;
+   
+   info("TPM_GetCapabilityOwner()");
+-  
++ 
++  if (!tpmData.permanent.flags.owned) {
++    return TPM_NOSRK;
++  } 
+   /* Verify owner authorization */
+   res = tpm_verify_auth(auth1, tpmData.permanent.data.ownerAuth, 
TPM_KH_OWNER);
+   if (res != TPM_SUCCESS) return res;
 diff -uprN orig/tpm_emulator-0.4/tpm/tpm_cmd_handler.c 
tpm_emulator/tpm/tpm_cmd_handler.c
 --- orig/tpm_emulator-0.4/tpm/tpm_cmd_handler.c        2006-06-23 
19:37:07.000000000 +0900
 +++ tpm_emulator/tpm/tpm_cmd_handler.c 2007-09-12 20:23:00.000000000 +0900

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