#! /bin/sh

### BEGIN INIT INFO
# Provides: LiMIC2 Kernel Module
# Required-Start: $local_fs $syslog
# Required-Stop: $local_fs $syslog
# Default-Start: 3 4 5
# Default-Stop: 0 1 2 6
# Short-Description: Manages loading of LiMIC2 Kernel Module
# Description: LiMIC is the Linux kernel module developed by System Software
#   Laboratory (SSLab) of Konkuk University. It enables high-performance MPI
#   intra-node communication over multi-core systems.
### END INIT INFO

. /lib/lsb/init-functions

LIMIC_MODULE=@KERNEL_MOD@/limic.ko

load_module () {
    if /sbin/insmod $LIMIC_MODULE; then
        log_success_msg Loading LiMIC2
    else
        log_failure_msg Loading LiMIC2
    fi
}

unload_module () {
    if /sbin/rmmod $LIMIC_MODULE; then
        log_success_msg Unloading LiMIC2
    else
        log_failure_msg Unloading LiMIC2
    fi
}

check_module () {
    /sbin/lsmod | /bin/grep limic >&/dev/null
}

case "$1" in
    start|reload|force-reload)
        if load_module; then
            exit 0
        else 
            exit 1
        fi
    ;;
    stop)
        if unload_module; then
            exit 0
        else
            exit 1
        fi
    ;;
    restart)
        check_module && unload_module
        if load_module; then
            exit 0
        else 
            exit 1
        fi
    ;;
    try-restart)
        if check_module; then
            if load_module; then
                exit 0
            else 
                exit 1
            fi
        fi
    ;;
    status)
        if check_module; then
            echo LiMIC2 is loaded
            exit 0
        else
            echo LiMIC2 is not loaded
            exit 3
        fi
    ;;
    *)
        echo "Usage: $0 start|stop|restart|try-restart|reload|force-reload|status"
        exit 2
    ;;
esac