#!/bin/sh
#
#       /etc/rc.d/init.d/docker
#
#       Daemon for docker.com
#
# chkconfig:   2345 95 95
# description: Daemon for docker.com

### BEGIN INIT INFO
# Provides:       docker
# Required-Start: $network cgconfig
# Required-Stop:
# Should-Start:
# Should-Stop:
# Default-Start: 2 3 4 5
# Default-Stop:  0 1 6
# Short-Description: start and stop docker
# Description: Daemon for docker.com
### END INIT INFO

# Source function library.
. /etc/rc.d/init.d/functions

prog="docker"
unshare=/usr/bin/unshare
exec="/usr/bin/dockerd"
pidfile="/var/run/$prog.pid"
lockfile="/var/lock/subsys/$prog"
logfile="/var/log/$prog"

[ -e /etc/sysconfig/$prog ] && . /etc/sysconfig/$prog

prestart() {
	service cgconfig status > /dev/null

	if [[ $? != 0 ]]; then
		service cgconfig start
	fi

}

start() {
	if [ ! -x $exec ]; then
		if [ ! -e $exec ]; then
			echo "Docker executable $exec not found"
		else
			echo "You do not have permission to execute the Docker executable $exec"
		fi
		exit 5
	fi

	check_for_cleanup

	if ! [ -f $pidfile ]; then
		prestart
		printf "Starting $prog:\t"
		echo "\n$(date)\n" >> $logfile
		"$unshare" -m -- $exec $other_args >> $logfile 2>&1 &
		pid=$!
		touch $lockfile
		# wait up to 10 seconds for the pidfile to exist.  see
		# https://github.com/docker/docker/issues/5359
		tries=0
		while [ ! -f $pidfile -a $tries -lt 10 ]; do
			sleep 1
			tries=$((tries + 1))
			echo -n '.'
		done
		if [ ! -f $pidfile ]; then
			failure
			echo
			exit 1
		fi
		success
		echo
	else
		failure
		echo
		printf "$pidfile still exists...\n"
		exit 7
	fi
}

stop() {
	echo -n $"Stopping $prog: "
	killproc -p $pidfile -d 300 $prog
	retval=$?
	echo
	[ $retval -eq 0 ] && rm -f $lockfile
	return $retval
}

restart() {
	stop
	start
}

reload() {
	restart
}

force_reload() {
	restart
}

rh_status() {
	status -p $pidfile $prog
}

rh_status_q() {
	rh_status > /dev/null 2>&1
}

check_for_cleanup() {
	if [ -f ${pidfile} ]; then
		/bin/ps -fp $(cat ${pidfile}) > /dev/null || rm ${pidfile}
	fi
}

case "$1" in
	start)
		rh_status_q && exit 0
		$1
		;;
	stop)
		rh_status_q || exit 0
		$1
		;;
	restart)
		$1
		;;
	reload)
		rh_status_q || exit 7
		$1
		;;
	force-reload)
		force_reload
		;;
	status)
		rh_status
		;;
	condrestart | try-restart)
		rh_status_q || exit 0
		restart
		;;
	*)
		echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload}"
		exit 2
		;;
esac

exit $?
