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-rw-r--r--tools/testing/selftests/tpm2/tpm2.py19
1 files changed, 17 insertions, 2 deletions
diff --git a/tools/testing/selftests/tpm2/tpm2.py b/tools/testing/selftests/tpm2/tpm2.py
index 828c18584624..d0fcb66a88a6 100644
--- a/tools/testing/selftests/tpm2/tpm2.py
+++ b/tools/testing/selftests/tpm2/tpm2.py
@@ -6,8 +6,8 @@ import socket
import struct
import sys
import unittest
-from fcntl import ioctl
-
+import fcntl
+import select
TPM2_ST_NO_SESSIONS = 0x8001
TPM2_ST_SESSIONS = 0x8002
@@ -352,6 +352,7 @@ def hex_dump(d):
class Client:
FLAG_DEBUG = 0x01
FLAG_SPACE = 0x02
+ FLAG_NONBLOCK = 0x04
TPM_IOC_NEW_SPACE = 0xa200
def __init__(self, flags = 0):
@@ -362,13 +363,27 @@ class Client:
else:
self.tpm = open('/dev/tpmrm0', 'r+b', buffering=0)
+ if (self.flags & Client.FLAG_NONBLOCK):
+ flags = fcntl.fcntl(self.tpm, fcntl.F_GETFL)
+ flags |= os.O_NONBLOCK
+ fcntl.fcntl(self.tpm, fcntl.F_SETFL, flags)
+ self.tpm_poll = select.poll()
+
def close(self):
self.tpm.close()
def send_cmd(self, cmd):
self.tpm.write(cmd)
+
+ if (self.flags & Client.FLAG_NONBLOCK):
+ self.tpm_poll.register(self.tpm, select.POLLIN)
+ self.tpm_poll.poll(10000)
+
rsp = self.tpm.read()
+ if (self.flags & Client.FLAG_NONBLOCK):
+ self.tpm_poll.unregister(self.tpm)
+
if (self.flags & Client.FLAG_DEBUG) != 0:
sys.stderr.write('cmd' + os.linesep)
sys.stderr.write(hex_dump(cmd) + os.linesep)