Exported utility functions for RTC and system sleep

client/bin/base_utils.py

 """
 DO NOT import this file directly - import client/bin/utils.py,
 which will mix this in
 
 Convenience functions for use by tests or whomever.
 
 Note that this file is mixed in by utils.py - note very carefully the
 precedence order defined there
 """
 import os, shutil, sys, signal, commands, pickle, glob, statvfs
@@ skipping 723 matching lines @@
     """
     'pgrep name' misses all python processes and also long process names.
     'pgrep -f name' gets all shell commands with name in args.
     So look only for command whose initial pathname ends with name.
     Name itself is an egrep pattern, so it can use | etc for variations.
     """
     return utils.system("pgrep -f '^([^ /]*/)*(%s)([ ]|$)'" % name_pattern,
                         ignore_status=True) == 0
 
 
-def get_hwclock_seconds(utc=True):
-    """
-    Return the hardware clock in seconds as a floating point value.
-    Use Coordinated Universal Time if utc is True, local time otherwise.
-    Raise a ValueError if unable to read the hardware clock.
-    """
-    cmd = '/sbin/hwclock --debug'
-    if utc:
-        cmd += ' --utc'
-    hwclock_output = utils.system_output(cmd, ignore_status=True)
-    match = re.search(r'= ([0-9]+) seconds since .+ (-?[0-9.]+) seconds$',
-                      hwclock_output, re.DOTALL)
-    if match:
-        seconds = int(match.group(1)) + float(match.group(2))
-        logging.debug('hwclock seconds = %f' % seconds)
-        return seconds
-
-    raise ValueError('Unable to read the hardware clock -- ' +
-                     hwclock_output)
-
-
-def set_wake_alarm(alarm_time):
-    """
-    Set the hardware RTC-based wake alarm to 'alarm_time'.
-    """
-    utils.write_one_line('/sys/class/rtc/rtc0/wakealarm', str(alarm_time))
-
-
-def set_power_state(state):
-    """
-    Set the system power state to 'state'.
-    """
-    utils.write_one_line('/sys/power/state', state)
-
-
-def standby():
-    """
-    Power-on suspend (S1)
-    """
-    set_power_state('standby')
-
-
-def suspend_to_ram():
-    """
-    Suspend the system to RAM (S3)
-    """
-    if os.path.exists('/usr/bin/powerd_suspend'):
-        utils.system('/usr/bin/powerd_suspend')
-    else:
-        set_power_state('mem')
-
-
-def suspend_to_disk():
-    """
-    Suspend the system to disk (S4)
-    """
-    set_power_state('disk')