#!/bin/sh

# mountnetfs

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

log_script_name "$0 $*"

# Load global network parameters
source /etc/sysconfig/network/network-parameters

# Make sure networking is up. If not, this bootscript will wait forever
if [ ! -f "${NETWORKING_UP_FILE}" ]; then
    msg_log "${0}: Network is down"
    exit ${EXIT_CODE_WARNING}
fi

mountnetfs_start() {
    if ! grep -q "_netdev" /etc/fstab; then
        msg_log "No network filesystem found in fstab"
        exit ${EXIT_CODE_SUCCESS}
    fi

    if grep -q "nfs" /etc/fstab; then
        # rpc.statd is required to mount nfs shares
        if [ ! -x /sbin/rpc.statd ]; then
            msg_log "Missing rpc.statd executable"
            exit ${EXIT_CODE_WARNING}
        fi

	if ! statusproc rpc.statd | grep -q "running"; then
            cmd_run_log_box "Starting rpc.statd" loadproc rpc.statd
        fi
    fi

    # Walk through /etc/fstab and mount all file systems that have the
    #_netdev option set in the fs_mntops field (the 4th field. See man
    # fstab for more info).
    cmd_run_log_box "Mounting network file systems" mount -a -O _netdev
}

mountnetfs_stop() {
    # The following line obtains a list from the output of
    # mount for all netfs types and anything that was
    # mounted with the _netdev option.
    NETMOUNTS=`/bin/mount \
        | /bin/grep '_netdev\|smbfs\|ncpfs|\coda\|nfs' \
	| /usr/bin/cut -d " " -f 3 | /bin/sed ':a;$!N;s/\n/ /;ta'`

    # Check to see if anything was listed from above
    # (see if anything is actually needs to be unmounted)
    if [ x"$NETMOUNTS" != x ]; then
	# There is something mounted
	# Try and stop processes the nice way
	# (probably won't work in most cases)
	/bin/fuser -SIGTERM -km $NETMOUNTS > /dev/null

	# Check and see if it found anything.  If it
	# did, then give 3 seconds for things to exit
	# the nice way before killing them off.
	# This one will work all of the time!
	if [ $? -eq 0 ]; then
	    /bin/sleep 3
	    /bin/fuser -km $NETMOUNTS > /dev/null
	fi

	# We now need to unmount all network filesystems.
	# We will do this with two umount commands to allow
	# for broken behavior of smbmount, and also to make
	# certain that netmounts without the _netdev option
	# will still get unmounted.
	/bin/umount -a -O _netdev

	# save the return value from umount
	if [ $? -ne 0 ]; then
	    NERRVAL=${EXIT_CODE_FAILURE}
	fi

	# Now catch the rest of the network filesystems
	# by fstype.  This list can be extended later as
	# more network filesystems are supported by mount.
	/bin/umount -a -t coda,ncpfs,nfs,smbfs
	if [ $? -eq 0 ]; then
	    return ${NERRVAL}
	else
	    # make certain that we return an error
	    return ${EXIT_CODE_FAILURE}
	fi
    else
	# There is nothing mounted
	msg_log "No network volumes mounted!"
    fi
}

case "$1" in
    start)
        mountnetfs_start
        ;;

    stop)
	cmd_run_log_box "Unmounting network file systems" mountnetfs_stop
	if statusproc rpc.statd | grep -q "running"; then
            cmd_run_log_box "Stopping rpc.statd" killproc rpc.statd
        fi
        ;;

    *)
        echo "Usage: $0 {start|stop}"
	exit ${EXIT_CODE_FAILURE}
    ;;
esac

exit $?