/usr/sbin/smbios-battery-ctl is in smbios-utils 2.4.1-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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# vim:expandtab:autoindent:tabstop=4:shiftwidth=4:filetype=python:tw=0
#############################################################################
#
# Copyright (c) 2016 Dell Computer Corporation
# by Srinivas Gowda <srinivas_g_gowda@dell.com>
# Dual Licenced under GNU GPL and OSL
#
#############################################################################
"""smbios-battery-ctl"""
# import arranged alphabetically
import gettext
import locale
import os
import sys
# the following vars are all substituted on install
# this bin isnt byte-compiled, so this is ok
pythondir="/usr/lib/python3/dist-packages"
clidir="/usr/share/smbios-utils"
# end vars
# import all local modules after this.
sys.path.insert(0,pythondir)
sys.path.insert(0,clidir)
import cli
from libsmbios_c import smbios_token, smbios, smi, system_info as sysinfo, localedir, GETTEXT_PACKAGE
from libsmbios_c.trace_decorator import traceLog, getLog
__VERSION__="2.4.1"
locale.setlocale(locale.LC_ALL, '')
gettext.install(GETTEXT_PACKAGE, localedir)
moduleLog = getLog()
verboseLog = getLog(prefix="verbose.")
class RunTimeBatteryErr(Exception): pass
def command_parse():
parser = cli.OptionParser(usage=__doc__, version=__VERSION__)
cli.addStdOptions(parser, passwordOpts=True, securityKeyOpt=True)
parser.add_option("--battery-charge", "-c", action="store_true", default=False, help=_("This will get the Current Battery Charging State"))
if len(sys.argv) == 1:
parser.print_help()
sys.exit()
return parser.parse_args()
def is_set(num, pos):
mask = 1 << pos
return True if (num & mask) else False
# Return a the byte specified by byte_pos from a double word num
def get_byte(num, byte_pos):
try :
if byte_pos < 0 or byte_pos > 3:
raise RunTimeBatteryErr( "Internal Error: Byte position out of bound - ", byte_pos )
except RunTimeBatteryErr as e:
print("\t%s" % e)
return ((num >> (byte_pos*8)) & 0xFF)
def print_express_charge_status(n):
if n == 0: print('\t Battery is not present')
elif n == 1: print('\t Standard')
elif n == 2: print('\t Express')
elif n == 3: print('\t One-time express')
elif n == 0xFF: print('\t Battery is present, and it does not support express charge')
else : print('\t Unknown')
def PrintBatteryChargingState():
try:
res = smi.simple_ci_smi( 4, 12, 0 )
verboseLog.info( _(" Get Charging State : res[smi.cbRES1]=0x%X,res[smi.cbRES2]=0x%X, res[smi.cbRES3]=0x%X") %
(res[smi.cbRES1],res[smi.cbRES2],res[smi.cbRES3]) )
if res[smi.cbRES1] != 0:
raise RunTimeBatteryErr( _(" Info: Unable to read Current Battery Charging State on this system\n") )
# cbRES2 byte 0 gives supported Features
print(_(" \n Supported battery charging features: "))
if is_set (res[smi.cbRES2], 0): print("\t Express Charging")
if is_set (res[smi.cbRES2], 1): print("\t Charge Disable")
if (get_byte(res[smi.cbRES2], 0) == 0 ): print("\t NIL")
print(_(" \n Battery charging Status: "))
# cbRES2 byte 1 gives the status of supported Features
if is_set ((get_byte(res[smi.cbRES2], 1)), 0): print("\t One or more batteries are present that support Express charge")
if is_set ((get_byte(res[smi.cbRES2], 1)), 1): print("\t Charging is disabled")
if (get_byte(res[smi.cbRES2], 1) == 0 ): print("\t NIL")
# cbRes3, bytes 0-3 contain the status of batteries 0-3 respectively
for i in range(4):
expr_status = get_byte(res[smi.cbRES3], i)
if(expr_status):
print(_("\n Battery %d Express Charge State:") % (i))
print_express_charge_status(expr_status)
except RunTimeBatteryErr as e:
print("\t%s" % e)
def main():
exit_code = 0
(options, args) = command_parse()
cli.setup_std_options(options)
try:
if options.battery_charge:
print(_("Libsmbios version : %s") % sysinfo.get_library_version_string())
print(_("smbios-battery-ctl version : %s") % __VERSION__)
verboseLog.info( _(" You can use smbios-battery-ctl utility to view/modify battery settings"))
PrintBatteryChargingState()
except (smi.SMIExecutionError, ) as e:
exit_code=3
moduleLog.info( _("ERROR: Could not execute SMI.") )
verboseLog.info( _("The smi library returned this error:") )
verboseLog.info( str(e) )
moduleLog.info( cli.standardFailMessage )
except (smbios.TableParseError, token.TokenTableParseError) as e:
exit_code=3
moduleLog.info( _("ERROR: Could not parse system SMBIOS table.") )
verboseLog.info( _("The smbios library returned this error:") )
verboseLog.info( str(e) )
moduleLog.info( cli.standardFailMessage )
except (token.TokenManipulationFailure,) as e:
exit_code=4
moduleLog.info( _("ERROR: Could not manipulate system token.") )
verboseLog.info( _("The token library returned this error:") )
verboseLog.info( str(e) )
moduleLog.info( cli.standardFailMessage )
return exit_code
if __name__ == "__main__":
sys.exit( main() )
# cbClass 4
# cbSelect 12
# Battery Charging
#
# cbArg1 determines the function to be performed
# On return:
# cbRES1 Standard return codes (0, -1, -2)
#
# cbArg1 0x0 = Get Current State
# cbRes2, byte 0 Supported feature bits
# bit 0 Express charge is supported (by the BIOS)
# bit 1 Charge disable is supported
# bits 2-7 Reserved for future use
# cbRes2, byte 1 Status bits
# bit 0 One or more batteries are present that support Express charge
# bit 1 Charging is disabled
# bits 2-7 Reserved for future use
# If the system supports Express Charge, cbRes3, bytes 0-3 contain the status of batteries 0-3 respectively (numbered as with the Class 8 function).
# cbRes3, byte n Battery n express charge status:
# 0 Battery is not present
# 1 Standard
# 2 Express
# 3 One-time express
# 0xFF Battery is present, and it does not support express charge
#
# cbArg2, byte 0 Set charge disable state:
# 0 Off (enable charging)
# 1 On (disable charging)
#
# cbArg2, bytes 0-3 contain the new state of batteries 0-3 respectively
# Battery Status:
# 00h High
# 01h Low
# 02h Critical
# 03h Charging
#
# cbArg2, byte n Battery n state:
# 0 No change (state remains as it was previously)
# 1 Standard . Express charge not supported by the battery
# 2 Express
# 3 One-time express
#
#
# cbClass 8
# cbSelect 16
# Set Battery Desktop Mode
#
# cbArg1 determines the function to be performed
# On return:
# cbRES1 Standard return codes (0, -1, -2)
#
# cbArg1, byte 0
# Mode Enablement
# 0 Disable desktop mode
# 1 Fully enable desktop mode
# 2 - 255 Undefined
#
# On return:
# cbRES1 Standard return codes (0, -1, -2)
#
#
# cbClass 8
# cbSelect 17
# Get Battery Desktop Mode
#
# On return:
# cbRES1 Standard return codes (0, -1, -2)
#
# cbRes2 Status
# Bit 0 1 = Supported, 0 = Not Supported
# Bit 1 1 = Desktop Mode, 0 = Laptop Mode
# Bit 2 1 = Battery is ready to enter desktop mode, 0 = Not ready
# Bit 3 to 31 Unused
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