2 files changed, 50 insertions, 0 deletions
diff --git a/src/on_ac_power/meson.build b/src/on_ac_power/meson.build
new file mode 100644
index 00000000..aedc4daa
--- /dev/null
+++ b/src/on_ac_power/meson.build
@@ -0,0 +1,3 @@
+install_data('on_ac_power',
+  install_dir : rc_bindir,
+  install_mode: 'rwxr-xr-x')
diff --git a/src/on_ac_power/on_ac_power b/src/on_ac_power/on_ac_power
new file mode 100644
index 00000000..a4c1cf9c
--- /dev/null
+++ b/src/on_ac_power/on_ac_power
@@ -0,0 +1,47 @@
+#!/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 ]