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# Copyright (C) 2014-2015 Red Hat Inc.
#
# 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.
import logging
import re
import subprocess
LOG = logging.getLogger('hardware.rtc')
def get_rtc():
cmd = ['timedatectl', 'status', '--no-pager']
try:
stdout = subprocess.check_output(cmd).decode("utf-8")
except OSError:
LOG.warning('Unable to determine RTC timezone (no timedatectl)')
return 'unknown'
except subprocess.CalledProcessError as excpt:
LOG.warning('RTC timezone command failed - %s' % excpt.output)
return 'unknown'
if stdout:
match = re.search(r'RTC in local TZ: ([a-z]+)$', stdout)
if match:
LOG.info('Is RTC set to UTC: %s' % match.group(1))
return match.group(1)
LOG.warning('Unable to determine RTC timezone (no match)')
else:
LOG.warning('Unable to determine RTC timezone (no output)')
return 'unknown'
def detect_rtc_clock():
rtc_clock = [('system', 'rtc', 'utc', get_rtc())]
return rtc_clock
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