Basis for cryptohome+power_SuspendResume stress test.

client/common_lib/rtc.py

+# Copyright (c) 2010 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.
+
+"""Provides utility methods for the Real Time Clock device.
+"""
+
 import errno
 
+
 def get_seconds(utc=True):
     """
     Read the current time out of the RTC
     """
     return int(file('/sys/class/rtc/rtc0/since_epoch').readline())
 
 
 def write_wake_alarm(alarm_time):
     """
     Write a value to the wake alarm
     """
     f = file('/sys/class/rtc/rtc0/wakealarm', 'w')
     f.write('%s\n' % str(alarm_time))
     f.close()
 
 def set_wake_alarm(alarm_time):
     """
     Set the hardware RTC-based wake alarm to 'alarm_time'.
     """
     try:
         write_wake_alarm(alarm_time)
     except IOError as (errnum, strerror):
         if errnum != errno.EBUSY:
             raise
         write_wake_alarm('clear')
         write_wake_alarm(alarm_time)