#!/bin/sh

# config file syntax:

# deviceno   sysfs_opts...

#

# Examples:

# 0.0.0203 readonly=1 failfast=1

# 0.0.0204

# 0.0.0205 erplog=1

[ -z "$DEVPATH" ] && exit 0

[ "$ACTION" != "add" ] && exit 0

CHANNEL=${DEVPATH##*/}

CONFIG=/etc/dasd.conf

PATH=/sbin:/bin

export PATH

warn() {

    [ -e /dev/kmsg ] && echo "<4>dasdconf.sh Warning: $@" > /dev/kmsg

    echo "dasdconf.sh Warning: $@" >&2

}

if [ -f "$CONFIG" ]; then

    if [ ! -d /sys/bus/ccw/drivers/dasd-eckd ] && [ ! -d /sys/bus/ccw/drivers/dasd-fba ]; then

	#warn "No dasd-eckd or dasd-eckd loaded"

        exit 0

    fi

    sed 'y/ABCDEF/abcdef/' < $CONFIG | while read line; do

        case $line in

            \#*) ;;

            *)

                [ -z "$line" ] && continue

                set $line

		# if we are in single add mode, only add the new CHANNEL

		[ "$SUBSYSTEM" = "ccw" ] && [ "$1" != "$CHANNEL" ] && continue

                DEVICE=$1

                SYSFSPATH=

                if [ -r "/sys/bus/ccw/drivers/dasd-eckd/$DEVICE" ]; then

                    SYSFSPATH="/sys/bus/ccw/drivers/dasd-eckd/$DEVICE"

                elif [ -r "/sys/bus/ccw/drivers/dasd-fba/$DEVICE" ]; then

                    SYSFSPATH="/sys/bus/ccw/drivers/dasd-fba/$DEVICE"

                else

		    # if we are in single add mode, this is a failure!

		    [ "$SUBSYSTEM" = "ccw" ] && warn "Could not find $DEVICE in sysfs"

                    continue

                fi

		# skip already onlined devices

		if [ "$(cat $SYSFSPATH/online)" = "1" ]; then

		    if [ "$SUBSYSTEM" = "ccw" ]; then

		        # if we are in single add mode, we should not touch the device

			warn "$DEVICE is already online, not configuring"

			exit 0

		    fi

		    continue

		fi

                shift

                while [ -n "$1" ]; do

                    (

                        attribute="$1"

                        IFS="="

                        set $attribute

                        if [ "$1" = "use_diag" ]; then

			    # this module better only returns after

			    # all sysfs entries have the "use_diag" file

                            modprobe dasd_diag_mod

                        fi

                        if [ -r "$SYSFSPATH/$1" ]; then

                            echo $2 > $SYSFSPATH/$1 || warn "Could not set $1=$2 for $DEVICE"

                        else

			    warn "$1 does not exist for $DEVICE"

                        fi

                    )

                    shift

                done

		# Now, put the device online

                echo 1 > $SYSFSPATH/online || echo "Could not activate $DEVICE"

		# if we are in single add mode, we are done

		[ "$SUBSYSTEM" = "ccw" ] && exit 0

                ;;

        esac

    done

fi

exit 0