1 # Copyright (c) 2014 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.bin import test 6 from autotest_lib.client.common_lib import error 7 from autotest_lib.client.common_lib import utils 8 9 class network_TwoShills(test.test): 10 """Test that only one shill runs at a time""" 11 SHILL_EXIT_TIMEOUT_SECONDS = 10 12 version = 1 13 14 15 @staticmethod 16 def is_shill_running(): 17 """ 18 Check if shill is running. 19 20 @return True or False. 21 22 """ 23 return utils.get_service_pid("shill") != 0 24 25 26 @staticmethod 27 def get_default_netdev(): 28 """ 29 Get the name of the network device with the default route. 30 31 @return A string such as "eth0" or "wlan0". 32 33 """ 34 cmd_result = utils.run( 35 "ip route show default match 0/0 | awk '{print $5}'") 36 return cmd_result.stdout 37 38 39 def run_once(self): 40 """Test main loop.""" 41 if not self.is_shill_running(): 42 raise error.TestFail("shill not running at start") 43 44 default_netdev = self.get_default_netdev() 45 if len(default_netdev) < 1: 46 raise error.TestFail("unable to determine default network device") 47 48 try: 49 # Run shill, expecting it to abort quickly. If the new 50 # process does not exit within the allotted time, 51 # utils.run() will kill the new process 52 # explicitly. (First with SIGTERM, then SIGKILL.) 53 cmd_result = utils.run( 54 "shill --foreground --device-black-list=%s" % default_netdev, 55 timeout=self.SHILL_EXIT_TIMEOUT_SECONDS, 56 ignore_status = True) 57 except error.CmdTimeoutError: 58 raise error.TestFail("shill did not exit within %d seconds" % 59 self.SHILL_EXIT_TIMEOUT_SECONDS) 60
