blob: 73d561bce3d8d34daf143920072d0d45fe94c26c [file] [log] [blame]
# Copyright (c) 2010,2013 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import logging
import re
from autotest_lib.client.bin import test, utils
from autotest_lib.client.common_lib import error
def get_major_minor(ver_string):
Obtain major and minor version numbers from a version string.
@param ver_string: version string of form "MAJOR.MINOR[.OTHER_NUMBERS]"
@return: list containing major and minor version numbers
return map(int, ver_string.split('.')[:2])
class kernel_TPMPing(test.test):
"""See control file for doc"""
version = 2
def run_once(self):
"""Run the test."""
# Check basic connectivity: TPM can report its version info.
tpm_version = utils.system_output("tpm_version")
match ='TPM ([0-9\.]+) Version Info', tpm_version)
if not match:
raise error.TestFail("Invalid tpm_version output:\n%s\n" % tpm_version)
# Obtain TPM spec and kernel versions."TPM spec version: %s",
spec_version = get_major_minor(
version = utils.system_output('/bin/uname -r').strip()"Kernel version: %s", version)
kernel_version = get_major_minor(version)
# The 'gentle shutdown' test is not compatible with kernel version < 3.8
# and TPM 2.0 chips.
if kernel_version >= [3, 8] and spec_version != [2, 0]:
# If the "[gentle shutdown]" string followed by 'Linux Version'
# is missing from /var/log/messages,
# we forgot to carry over an important patch.
result = utils.system_output('awk \'/Linux version [0-9]+\./ '
'{gentle=0;} /\[gentle shutdown\]/ '
'{gentle=1;} END {print gentle}\' '
'$(ls -t /var/log/messages* | tac)',
# We only care about the most recent instance of the TPM driver message.
if result == '0':
raise error.TestFail('no \'gentle shutdown\' TPM driver init message')
else:'Bypassing the gentle shutdown test')