#!/bin/sh -e

# Check for ACPI support on kernel side
# Exit if use VM without kernel (OpenVZ)
[ -d /proc/acpi ] || exit 0

# Check for daemon presence
test -x /usr/sbin/acpid || exit 0

# Include acpid defaults if available
OPTIONS="-S"

# Get lsb functions
. /lib/lsb/init-functions
. /etc/default/rcS

if [ "x$VERBOSE" = "xno" ]
then
    MODPROBE_OPTIONS="$MODPROBE_OPTIONS -Q"
    export MODPROBE_OPTIONS
fi

# As the name says. If the kernel supports modules, it'll try to load
# the ones listed in "MODULES".
load_modules() {
    PRINTK=`cat /proc/sys/kernel/printk`
    [ "$VERBOSE" = no ] && echo "0 0 0 0" > /proc/sys/kernel/printk
        
    LIST=`/sbin/lsmod|awk '!/Module/ {print $1}'`

    # Get list of available modules
    LOC="/lib/modules/`uname -r`/kernel/drivers/acpi"
    LOC2="/lib/modules/`uname -r`/kernel/ubuntu/acpi"
    if [ -d $LOC ]
    then
	    MODAVAIL=`( find $LOC -type f -name "*.o" -printf "basename %f .o\n"; \
	    find $LOC -type f -name "*.ko" -printf "basename %f .ko\n" ) | /bin/sh`
	else
        MODAVAIL=""
	fi
    if [ -d $LOC2 ]
    then
	    MODAVAIL="$MODAVAIL `( find $LOC2 -type f -name "*.o" -printf "basename %f .o\n"; \
        find $LOC2 -type f -name "*.ko" -printf "basename %f .ko\n" ) | /bin/sh`"
    fi
    if [ "$MODULES" = "all" ]
    then
		MODULES="$MODAVAIL"
    fi

	if [ -n "$MODULES" ]
    then
		log_begin_msg "Loading ACPI modules..."
		STATUS=0
	        for mod in $MODULES; do
			echo $MODAVAIL | grep -q -w "$mod" || continue
		        if echo $LIST | grep -q -w "$mod"; then
				[ "$VERBOSE" != no ] && log_success_msg "Module already loaded: $mod"
			else
				if modprobe -b $mod 2>/dev/null; then
					[ "$VERBOSE" != no ] && log_success_msg "Loaded module: $mod"
				else
					if [ "$VERBOSE" != no ]; then
						log_warning_msg "Unable to load module: $mod"
					fi
				fi
			fi		
	        done
		log_end_msg $STATUS
	fi
    echo "$PRINTK" > /proc/sys/kernel/printk
}

case "$1" in
    start)
        [ -f /proc/modules ] && load_modules
        log_begin_msg "Starting ACPI services..."
        start-stop-daemon --start --quiet --oknodo --exec /usr/sbin/acpid -- -c /etc/acpi/events $OPTIONS
        log_end_msg $?
        ;;
    stop)
        log_begin_msg "Stopping ACPI services..."
        start-stop-daemon --stop --quiet --oknodo --retry 2 --exec /usr/sbin/acpid
        log_end_msg $?
        ;;
    restart)
        $0 stop
        sleep 1
        $0 start
        ;;
    reload|force-reload) 
        log_begin_msg "Reloading ACPI services..."
        start-stop-daemon --stop --signal 1 --exec /usr/sbin/acpid
        log_end_msg $?
        ;;
    *)
        log_success_msg "Usage: /etc/init.d/acpid {start|stop|restart|reload|force-reload}"
        exit 1
esac

exit 0