:
#               (C) 1992 Advanced Micro Devices
#
#               (C) 1989-1990 The Santa Cruz Operation, Inc.  All Rights
#               Reserved.  The user has unlimited right to use, modify
#               and incorporate this code into other products provided
#               it is used with SCO products and the user includes
#               this notice and the associated copyright notices with
#               any such application.
#               This is a script for removing PCNET family driver using netconfig.
# 
LIB=/usr/lib/lli
CONF=/etc/conf
PATH=/bin:/usr/bin:/etc/:$CONF/bin:$LIB
#
# Set possible return codes for this script
#
OK=0;   FAIL=1; RELINK=2; DRIVERINUSE=3;

#
# prompt the user to answer a yes no question or 'q' to quit
# Usage:
#       prompt_yn "Message" default
prompt_yn() {
        mesg=$1
        default=$2

        while :
        do
                echo "${mesg} (y/n) [${default}] : \c"
                read result

                case $result in
                y|Y) result="Y"; return $OK;;
                n|N) result="N"; return $OK;;
                "") result=`echo $default | tr "yn" "YN"`; return $OK;;
                esac

                echo "Illegal value, please type 'y' 'n' or 'q'"
        done
}

#
# Fake up an mdevice and an sdevice for idcheck
#
makedevs() {
        rm -fr /tmp/dev$$
        mkdir /tmp/dev$$
        cd /etc/conf/cf.d
        cp mdevice /tmp/dev$$
        cd ../sdevice.d
        cat * > /tmp/dev$$/sdevice
}

# cleanup removes stuff and exits - if $1 = $DRIVERINUSE, exits value is $2
cleanup() {
        tmp=$1

        if [ $tmp -ne $DRIVERINUSE ]
        then
                # disallow configuring greater than board zero
                netconfigdir=/usr/lib/netconfig
                nextbd=`expr $bd + 1`
                rm ${netconfigdir}/info/${drv}${nextbd} > /dev/null 2>&1
                rm ${netconfigdir}/init/${drv}${nextbd} > /dev/null 2>&1
                rm ${netconfigdir}/remove/${drv}${nextbd} > /dev/null 2>&1
        else
                tmp=$2
        fi
        cd /
        rm -fr /tmp/dev$$
        rm -fr /tmp/$base
        exit $tmp
}

system_e3A() {
        # decrement the 2k block buffers for cleanliness
        awk '/^NBLK2048/ {
                OLD=$2-8
                printf "%s\t%s\n",$1,OLD
                next
        }
        { print } ' < /etc/conf/cf.d/stune > /tmp/bog$$
        mv /tmp/bog$$ /etc/conf/cf.d/stune
}

#
# function to remove address conflicts in the sio driver
#
sio_conflict() {
        currdir=`pwd`
        cd /etc/conf/pack.d/sio
        if [ "$BIO" != "0" ]
        then
                grep "/* LLI {.*$BIO" space.c > /dev/null && {
                        echo "Restoring serial cards using base address 0x$BIO into link kit..."
                        sed -e /"LLI.*$BIO,/s/^\/\* LLI //" space.c >/tmp/bog$$
                        if [ "$base" = "tok0" ] 
                        then
                                sed -e /"ibm COM3/s/^\/\* LLI //" /tmp/bog$$ >/tmp/foo$$
                                mv /tmp/foo$$ /tmp/bog$$
                        fi
                        mv /tmp/bog$$ space.c
                }
        fi
        cd $currdir
}

#
# function to produce the information for the System file for the token ring
#
# if tcp is installed we remove the board from /etc/tcp and /etc/strcf
#
cleantcp() {
        driver=$1

        [ -f /etc/tcp ] && {
                sed "/$driver/d" /etc/tcp > /tmp/bog$$
                cp /tmp/bog$$ /etc/tcp
        }
        [ -f /etc/strcf ] && {
                sed "/$driver/d" /etc/strcf > /tmp/bog$$
                cp /tmp/bog$$ /etc/strcf
        }
        rm -f /tmp/bog$$
}

# restorevector check for sio (vecs 3-4) and pa drivers (vec 7)
# if these are being released by lli then let us restore them to sio or pa
restorevector() {
        currdir=`pwd`
        cd /etc/conf/cf.d

        intvector=$1
        test="0"
        [ "$intvector" = "3" ] && test="1"
        [ "$intvector" = "4" ] && test="1"
        if [ "$test" = "1" ]
        then
                prompt_yn "Restore vector $intvector to sio driver" y
                [ "$result" = "Y" ] && {
                        echo "Restoring vector $intvector to sio driver"
                        siomajor=`./configure -j sio`
                        ./configure -m $siomajor -c -v $intvector -a -Y
                        return $OK
                }
        fi
        test="0"
        [ "$intvector" = "7" ] && test="1"
        if [ "$test" = "1" ]
        then
                prompt_yn "Restore vector $intvector to pa driver" y
                [ "$result" = "Y" ] && {
                        echo "Restoring vector $intvector to pa driver"
                        pamajor=`./configure -j pa`
                        ./configure -m $pamajor -c -v $intvector -a -Y
                        return $OK
                }
        fi
        return $OK
}

# main()
#

#
# get the name of the init script being run, since one script
# is used for multiple drivers; get the number at the end of the
# script's name
#
if [ $# -gt 1 ]
then
        name_below=$1; if_below=$2
        name_above=$3; if_above=$4
fi

base=`basename $0`

drv=`echo $base | sed -e 's/[0-9]*$//`
bd=`expr $base : '.*\(.\)'`
case $drv in
pnt) PREFIX="pnt";;
*) echo "ERROR: Unknown LLI driver being configured ($name$bd)";
        cleanup $FAIL;
        ;;
esac

echo "NODE=/etc/conf/node.d/$base" >/tmp/$base.src
chmod 777 /tmp/$base.src

#
# check to see if the driver is already in the kernel link-kit so we can
# either add it or update it later on
#
makedevs
idcheck -p $base
if [ $? -gt 16 ]
then
        installed="TRUE"
else
        installed="FALSE"
fi

if [ "$installed" = "FALSE" ]
then
        cleanup $OK
fi

#
# Check and Manage our internal chains file.
#
# if our board (base) is not in the chain then we always remove the board
# if our board is in the chain then we check for the chain and remove it.
# if after our chain is removed from the chains file the board is still there
#    then we do not remove it.
#
chains=/usr/lib/lli/chains
chain=$base:$name_above
if grep $base: $chains > /dev/null 2>& 1
then 
        grep $chain $chains > /dev/null 2>& 1 || {
                cleanup $OK
        }
        # remove our chain
        awk '{
                if ($1 == CHAIN && found != 1) {
                        found = 1
                        next
                }
                print $0
        }' CHAIN=$chain < $chains > /tmp/bog$$
        cp /tmp/bog$$ $chains
        rm -f /tmp/bog$$
        # Check if it is there in another chain
        grep $base: $chains > /dev/null 2>& 1 && {
                cleanup $DRIVERINUSE $OK
        }
else
        cleanup $OK
fi

echo "Removing $base..."

# Check if we are board zero that no other boards of this type are configured
[ "$bd" -eq "0" ] && {
        grep ${drv}[1-3] $chains > /dev/null 2>& 1 && {
                echo "Warning, You are removing board 0 before other boards"
                echo "You must remove the other $drv boards next"
                echo "or your link-kit will be left in an invalid state"
        }
}

#
# Do board dependent processing
#
case $drv in
        e3A)    system_e3A $bd;;
esac

#if [ $bd -gt 0 ]
#then
#       idinstall -d -e $base
#       cleanup $RELINK
#fi

# get the interrupt vector for the board that we are removing
cd /etc/conf/sdevice.d
ivec=`awk '{ if ( $1 != "*" ) print $6 }' < $base`
BIO=`awk '{ if ( $1 != "*" ) print $7 }' < $base`

cd /tmp; rm -rf $base

mkdir $base; cd $base

echo "${base}\tN\t1\t5\t1\t9\t0\t0\t0\t0" >System
if [ $bd -gt 0 ]
then
        echo "$base     -       iScH    $PREFIX$bd      0       0       1       256     -1" >./Master
else
        cp $LIB/${drv}/Master ./Master
fi
idinstall -u -e -s -m $base

# restore sio space.c file
sio_conflict

cleantcp $base
restorevector $ivec
# Check to see if driver for next board is configured
grep ${drv}`expr ${bd} + 1`: $chains > /dev/null 2>& 1 && {
        cleanup $DRIVERINUSE $RELINK
}
cleanup $RELINK