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#!/bin/sh # Detect AC power or not in a portable way # Exit 0 if on AC power, 1 if not and 255 if we don't know how to work it out # Copyright (c) 2007-2015 The OpenRC Authors. # See the Authors file at the top-level directory of this distribution and # https://github.com/OpenRC/openrc/blob/HEAD/AUTHORS # # This file is part of OpenRC. It is subject to the license terms in # the LICENSE file found in the top-level directory of this # distribution and at https://github.com/OpenRC/openrc/blob/HEAD/LICENSE # This file may not be copied, modified, propagated, or distributed # except according to the terms contained in the LICENSE file. if [ -f /proc/acpi/ac_adapter/*/state ]; then cat /proc/acpi/ac_adapter/*/state | while read line; do case "$line" in "state:"*"off-line") exit 128;; esac done elif [ -d /sys/class/power_supply ]; then for dir in /sys/class/power_supply/*/; do [ "$(cat "${dir}/type")" != "Mains" ] && continue [ "$(cat "${dir}/online")" = 0 ] && exit 128 done elif [ -f /proc/pmu/info ]; then cat /proc/pmu/info | while read line; do case "$line" in "AC Power"*": 0") exit 128;; esac done elif command -v envstat >/dev/null 2>&1; then # NetBSD has envstat envstat -d acpiacad0 2>/dev/null | while read line; do case "$line" in "connected:"*"OFF") exit 128;; esac done elif sysctl -q hw.acpi.acline >/dev/null 2>/dev/null; then case $(sysctl -n hw.acpi.acline) in 0) exit 1;; *) exit 0;; esac else exit 255 fi [ $? != 128 ]