#!/bin/bash
#
# Copyright(c) 2012-2020 Intel Corporation
# SPDX-License-Identifier: BSD-3-Clause-Clear
#
#
# open-cas-shutdown      Stops Open CAS
#
# chkconfig: 235 05 95
# description: Open Cache Acceleration Software Shutdown Trigger
#
# processname: open-cas-shutdown

### BEGIN INIT INFO
# Provides:             open-cas-shutdown
# Required-Start:       $local_fs
# Required-Stop:        $local_fs
# Default-Start:        2 3 5
# Default-Stop:         0 1 6
# Short-Description:    Open Cache Acceleration Software Shutdown Trigger
# Description:          Open Cache Acceleration Software Shutdown Trigger
### END INIT INFO

# Execution flow

runfile=/var/lock/subsys/open-cas-shutdown

function umount_cache_volumes()
{
    BLOCK_DEV_PREFIX=/dev/cas
    INSTANCES=`ls ${BLOCK_DEV_PREFIX}* | egrep [1-9][0-9]*-[1-9][0-9]*`
    for inst in $INSTANCES ; do
        # Umount any mounted Open CAS devices first
        if [[ `cat /etc/mtab | grep $inst | wc -l` -gt 0 ]] ; then
            umount $inst &> /dev/null
        fi
    done
}

case "$1" in
    start|restart|reload)
        mkdir -p `dirname $runfile`
        touch $runfile
        exit 0
        ;;
    status)
        exit 0
        ;;
    stop)
        umount_cache_volumes
        /sbin/cas stop
        rm -f $runfile
        exit $?
        ;;
    *)
        exit 1
esac