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#!/bin/bash
# Copyright (C) 2014 Multi-Tech Systems
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
PERSISTENT_DIR="/var/persistent/"
ERASE_PERSISTENT="${PERSISTENT_DIR}/mts_do_erase_persistent"
name="reset-handler"
log="logger -t $name -s"
pid="$$"
off_leds_test() {
logger 'Turning LEDs to off'
leds=$(ls $led_dir/ | grep -v status)
nleds=$(echo "$leds" | wc -w)
# turn LEDs off
for led in $leds; do
echo none > $led_dir/$led/trigger
echo 0 > $led_dir/$led/brightness
done
logger 'Done LEDs off'
}
blink_leds_test() {
logger 'Turning LEDs to test'
led_dir=/sys/class/leds
# blink all programmable LEDs except status
# in reverse order
leds=$(ls $led_dir/ | grep -v status | awk '{a[i++]=$0} END {for (j=i-1; j>=0;) print a[j--] }')
nleds=$(echo "$leds" | wc -w)
# turn LEDs off
for led in $leds; do
echo "timer" > $led_dir/$led/trigger
echo 0 > $led_dir/$led/delay_off
done
# make a pattern
int=1200
total=$(( int * (nleds+1) ))
on=$(( total - int ))
off=$(( total - on ))
for led in $leds; do
echo "$on" > $led_dir/$led/delay_on
echo "$off" > $led_dir/$led/delay_off
on=$(( total - int ))
off=$(( total - on ))
done
sleep 4
off_leds_test
logger 'Done Turning LEDs to test'
}
short_signal=10 # SIGUSR1
long_signal=12 # SIGUSR2
extralong_signal=1 # SIGHUP
do_reboot() {
$log "Rebooting on button press"
sleep 1
reboot
}
do_shutdown() {
$log "Shutting down"
shutdown -h now
}
do_restore_defaults() {
$log "Removing /var/config contents"
rm -rf /var/config/*
$log "Setting restore defaults on reboot"
touch /var/config/force_defaults
if [[ -x /usr/bin/rmpasswd ]]
then
$log "Resetting passwords"
source rmpasswd
fi
if [[ -d ${PERSISTENT_DIR} ]] ; then
touch ${ERASE_PERSISTENT}
fi
$log "Blink LEDs"
sleep 1
reboot
}
log_exit() {
$log "Exiting on SIGTERM"
exit 0
}
idle_wait() {
pipe=/var/tmp/$name.fifo
rm -f $pipe
mkfifo -m 400 $pipe
# sneaky way to do nothing forever
while true; do
read < $pipe
done
}
trap blink_leds_test $short_signal
trap blink_leds_test $long_signal
trap blink_leds_test $extralong_signal
trap log_exit TERM
$log "Enabling reset-monitor for pid $pid"
mts-io-sysfs store reset-monitor "$pid $short_signal $long_signal $extralong_signal"
# set long press to 5 seconds for reset to defaults
mts-io-sysfs store reset-monitor-intervals "5 30"
# set up SIGPWR shutdown
# wait for signals
idle_wait
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