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      1 # Copyright (c) 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 from autotest_lib.client.common_lib import error
      6 from autotest_lib.server import test
      7 
      8 class kernel_IgnoreGptOptionServer(test.test):
      9     """Test to check that the kernel is ignoring the cmd line option 'gpt'.
     10     """
     11     version = 1
     12 
     13 
     14     def run_once(self, host=None):
     15         # Check if gpt option is present on the command line.
     16         try:
     17             host.run('cat /proc/cmdline | grep -E "( gpt)|(gpt )"')
     18         except error.AutoservRunError:
     19             raise error.TestNAError('No need to check that "gpt" is ignored '
     20                                     'by the kernel on this device.')
     21 
     22         # Reboot the client
     23         host.reboot()
     24 
     25         try:
     26             msg = 'Not forcing GPT even though \'gpt\' specified on cmd line.'
     27             host.run ('dmesg | grep "%s"' % msg)
     28         except error.AutoservRunError:
     29             raise error.TestFail('The option "gpt" not ignored by the kernel.')
     30