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#!/usr/bin/python
# Copyright 2018 Google Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Utilities that are distro specific for use on SUSE 11."""
import os
import subprocess
from google_compute_engine import constants
from google_compute_engine.distro import utils
class Utils(utils.Utils):
"""Utilities used by Linux guest services on SUSE 11."""
def EnableNetworkInterfaces(
self, interfaces, logger, dhclient_script=None):
"""Enable the list of network interfaces.
Args:
interfaces: list of string, the output device names to enable.
logger: logger object, used to write to SysLog and serial port.
dhclient_script: string, the path to a dhclient script used by dhclient.
"""
interfaces_to_up = [i for i in interfaces if i != 'eth0']
if interfaces_to_up:
logger.info('Enabling the Ethernet interfaces %s.', interfaces_to_up)
self._Dhcpcd(interfaces_to_up, logger)
def _Dhcpcd(self, interfaces, logger):
"""Use dhcpcd to activate the interfaces.
Args:
interfaces: list of string, the output device names to enable.
logger: logger object, used to write to SysLog and serial port.
"""
for interface in interfaces:
dhcpcd = ['/sbin/dhcpcd']
try:
subprocess.check_call(dhcpcd + ['-x', interface])
except subprocess.CalledProcessError:
# Dhcpcd not yet running for this device.
logger.info('Dhcpcd not yet running for interface %s.', interface)
try:
subprocess.check_call(dhcpcd + [interface])
except subprocess.CalledProcessError:
# The interface is already active.
logger.warning('Could not activate interface %s.', interface)
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