1 # Copyright (c) 2010,2013 The Chromium OS Authors. All rights reserved. 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 import logging 6 from autotest_lib.client.bin import test, utils 7 from autotest_lib.client.common_lib import error 8 9 class kernel_TPMPing(test.test): 10 """See control file for doc""" 11 version = 2 12 13 def run_once(self): 14 tpm_version = utils.system_output("tpm_version") 15 if tpm_version.find("Version Info") == -1: 16 raise error.TestFail("Invalid tpm_version output:\n%s\n" % tpm_version) 17 else: 18 logging.info(tpm_version) 19 20 # This autotest is not compatible with kernel version < 3.8 21 version = utils.system_output('/bin/uname -r').strip() 22 logging.info(version) 23 24 # If the "[gentle shutdown]" string followed by 'Linux Version' 25 # is missing from the /var/log/messages, 26 # we forgot to carry over an important patch. 27 if version >= '3.8': 28 result = utils.system_output('awk \'/Linux version [0-9]+\./ ' 29 '{gentle=0;} /\[gentle shutdown\]/ ' 30 '{gentle=1;} END {print gentle}\' ' 31 '$(ls -t /var/log/messages* | tac)', 32 ignore_status=True) 33 34 # We only care about the most recent instance of the TPM driver message. 35 if result == '0': 36 raise error.TestFail('no \'gentle shutdown\' TPM driver init message') 37 else: 38 logging.info('Bypassing the test as kernel version is < 3.8') 39
