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#!/bin/bash
# Copyright (C) 2018 Oracle. All Rights Reserved.
#
# Author: Darrick J. Wong <darrick.wong@oracle.com>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it would be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
# Run e2scrub_all from a cronjob if we don't have systemd and we're not
# running on AC power.
on_ac_power() {
local any_known=no
# try sysfs power class first
if [ -d /sys/class/power_supply ]; then
for psu in /sys/class/power_supply/*; do
if [ -r "$psu/type" ]; then
type=$(cat "$psu/type")
# ignore batteries
[ "$type" = "Battery" ] && continue
online=$(cat "$psu/online")
[ "$online" = 1 ] && return 0
[ "$online" = 0 ] && any_known=yes
fi
done
[ "$any_known" = "yes" ] && return 1
fi
# else fall back to AC adapters in /proc
if [ -d /proc/acpi/ac_adapter ]; then
for ac in /proc/acpi/ac_adapter/*; do
if [ -r "$ac/state" ]; then
grep -q on-line "$ac/state" && return 0
grep -q off-line "$ac/state" && any_known=yes
elif [ -r "$ac/status" ]; then
grep -q on-line "$ac/status" && return 0
grep -q off-line "$ac/status" && any_known=yes
fi
done
[ "$any_known" = "yes" ] && return 1
fi
# Can't tell, just assume we're on AC.
return 0
}
test -e /sbin/e2scrub_all || exit 0
test -e /run/systemd/system && exit 0
on_ac_power || exit 0
exec /sbin/e2scrub_all