#!/bin/sh
#
# scsi 1.26 1996/11/27 03:44:44 (David Hinds)
#
# Initialize or shutdown a PCMCIA SCSI adapter
#
# The first argument should be either 'start' or 'stop'.  The second
# argument is the base name for the device.
#
# The script passes an extended device address to 'scsi.opts' in the
# ADDRESS variable, to retrieve device-specific configuration options.
# The address format is "scheme,device,socket,channel,id,lun[,part]"
# where "scheme" is the PCMCIA configuration scheme; "device" is the
# SCSI device type (sd, sr, st, sg); "socket" is the socket number;
# "channel", "id", and "lun" are the SCSI device ID's; and "part" is,
# optionally, the partition number.
#
# The script first calls scsi.opts for the entire device.  If
# scsi.opts returns with the PARTS variable set, then this variable
# contains a list of partitions for which options should be read.
#

usage()
{
    echo "usage: scsi [action] [device name]"
    echo "  actions: start check stop suspend resume"
    exit 1
}

if [ $# -lt 2 ] ; then usage ; fi
ACTION=$1 ; DEVICE=$2

# If we're running on a 1.2.X system, use hard-wired list
if [ "$DEVICE" = "n/a" ] ; then
    . /etc/pcmcia/scsi.opts
    if [ "$SCSI_DEVICES" != "" ] ; then
	export SCSI_DEVICES
	for DEVICE in $SCSI_DEVICES ; do
	    $0 $ACTION $DEVICE
	done
    fi
    exit 0
fi

# Get device attributes
if [ "$SCSI_DEVICES" = "" ] ; then
    INFO=`fgrep "	$DEVICE	" /var/run/stab` || usage
    set -- $INFO ; SOCKET=$1
else
    SOCKET=0
fi
case "$DEVICE" in
sd*)  TYPE="sd" ;;
st*)  TYPE="st" ;;
scd*) TYPE="sr" ;;
sg*)  TYPE="sg" ;;
esac
eval `/sbin/scsi_info /dev/$DEVICE` || usage
if [ -s /var/run/pcmcia-scheme ] ; then
    SCHEME=`cat /var/run/pcmcia-scheme`
else
    SCHEME="default"
fi

# Load site-specific settings
ADDRESS="$SCHEME,$TYPE,$SOCKET,$SCSI_ID"
. /etc/pcmcia/scsi.opts

case "$ACTION" in

'start')
    FAIL=0
    for PART in ${PARTS:-"."} ; do
	# Get mount options for particular partitions
	if [ $PART != "." ] ; then
	    ADDRESS="$SCHEME,$TYPE,$SOCKET,$SCSI_ID,$PART"
	    unset DO_FSTAB DO_FSCK DO_MOUNT
	    . /etc/pcmcia/scsi.opts
	fi
	DEV=/dev/$DEVICE${PARTS:+$PART}
	if [ "$DO_FSTAB" = "y" ] ; then
	    echo "$DEV $MOUNTPT $FSTYPE ${OPTS:-defaults} 0 0" \
		>> /etc/fstab
	fi
	if [ "$DO_FSCK" = "y" ] ; then
	    /sbin/fsck -Ta $DEV
	    if [ $? -ne 0 ] ; then FAIL=1 ; continue ; fi
	fi
	if [ "$DO_MOUNT" = "y" ] ; then
	    mount -v ${OPTS:+-o $OPTS} ${FSTYPE:+-t $FSTYPE} $DEV \
		$MOUNTPT || FAIL=1
	fi
    done
    exit $FAIL
    ;;

'check')
    if [ -b /dev/$DEVICE ] ; then
	fuser -s -m /dev/${DEVICE}* && exit 1
    elif [ -c /dev/$DEVICE ] ; then
	fuser -s /dev/${DEVICE}* && exit 1
    fi
    ;;

'stop')
    for PART in ${PARTS:-"."} ; do
	if [ $PART != "." ] ; then
	    ADDRESS="$SCHEME,$TYPE,$SOCKET,$SCSI_ID,$PART"
	    unset DO_FSTAB DO_FSCK DO_MOUNT
	    . /etc/pcmcia/scsi.opts
	fi
	if [ "$DO_FSTAB" = "y" ] ; then
	    fgrep -v "/dev/$DEVICE${PARTS:+$PART} " /etc/fstab > /etc/fstab.N
	    mv /etc/fstab.N /etc/fstab
	fi
    done
    if [ -b /dev/$DEVICE ] ; then
	fuser -s -k -m /dev/${DEVICE}*
	list=`mount | grep "/dev/${DEVICE}[0-9]* on" | cut -d" " -f3`
	if [ "$list" != "" ] ; then
	    for fs in $list ; do
		umount -v $fs || exit 1
	    done
	fi
    elif [ -c /dev/$DEVICE ] ; then
	fuser -s -k /dev/${DEVICE}*
    fi	
    ;;

'suspend'|'resume')
    ;;

*)
    usage
    ;;

esac

exit 0
