#!/bin/bash

export PATH=/sbin:$PATH
q=--quiet

KERNELROOT=/tmp/updboot.kernel-$$
MODLIST=$PWD/../anaconda/utils/modlist
PCITABLE=$PWD/../anaconda/kudzu/pcitable
TRIMPCITABLE=$PWD/../anaconda/utils/trimpcitable
GETMODDEPS=$PWD/../anaconda/utils/moddeps
FILTERMODDEPS=$PWD/../anaconda/utils/filtermoddeps

# egrep expression, not a list
EXCLUDENETMODULES="acenic"

# list of modules to leave off of boot disks
NOTBOOTMODULES="cpqarray DAC960 gdth ips pcd imm ppa eata_dma"

PCMCIAMODULES="8390"
BLOCKMODULES="raid0 raid1 raid5"

ARCH=$(uname -m | sed 's/i.86/i386/')

# pcd.o paride.o bpck.o"

# this is an egrep expression, not a list, of modules left out of the module 
# ball
PRISTINEMODULES="(loop.o)"

MODLINKS="block cdrom fs ipv4 misc net scsi"


usage () {
    echo "$0: <component>"
    exit 1
}

resdeps () {
    list=`$GETMODDEPS -m $MODDEPS $*`
    items=$(for n in $* $list; do echo $n; done | sort -u)
    echo $items
}

findmodule () {
    find $KERNELROOT/lib/modules -name $1.o
}

intcopymodules () {
    for n in $1; do
	m=`findmodule $n`
	if [ -z "$m" ]; then
            echo "Module $n not found in kernel rpm"
        else 
	    for dir in $2; do
	        if ! cp $m $dir ; then
		    echo "Failed to copy $m to $dir (for module $n)"
	        fi
	    done
        fi
    done
}

copymodules () {
    intcopymodules "$1" "$2 ../../../RedHat/instimage/modules"
}


if [ -z "$1" ]; then
    usage
fi

COMPONENT=$1

wd=`pwd`

if [ x`basename $wd` != x"trees" ]; then
    usage
fi

rm -rf $KERNELROOT
mkdir -p $KERNELROOT

kpackage=$(latest --arch $ARCH $COMPONENT kernel-BOOT)
ppackage=$(latest --arch $ARCH $COMPONENT kernel-pcmcia-cs)

version=$(rpm --qf '%{VERSION}-%{RELEASE}' -qp $kpackage)BOOT

rpm2cpio $kpackage | (cd $KERNELROOT; cpio --quiet -iumd)
rpm2cpio $ppackage | (cd $KERNELROOT; cpio --quiet -iumd etc/pcmcia/*)

if [ ! -d "$KERNELROOT/lib/modules/$version/scsi" ]; then
    echo "$1 is not a valid modules directory" 2>&1
    usage
fi

if [ ! -f "$KERNELROOT/boot/vmlinuz-$version" ]; then
    echo "$KERNELROOT/boot/vmlinuz-$version does not exist"
    usage
fi

#if [ ! -f "$KERNELROOT/boot/module-info-$version" ]; then
#    echo "$KERNELROOT/boot/module-info-$version does not exist"
#    usage
#fi

MODINFO=$KERNELROOT/boot/module-info-$version
# we really ought to use the above modinfo file :-(
MODINFO=$PWD/../anaconda/loader/module-info
MODDEPS=$KERNELROOT/moddeps

depmod -e -i -m $KERNELROOT/boot/System.map-$version \
	$KERNELROOT/lib/modules/$version/*/*.o | $FILTERMODDEPS > $MODDEPS

NETMODULES=$(resdeps `$MODLIST --modinfo-file $MODINFO net | egrep -v $EXCLUDENETMODULES`)
SCSIMODULES=$(resdeps `$MODLIST --modinfo-file $MODINFO scsi`)
CDMODULES=$(resdeps `$MODLIST --modinfo-file $MODINFO cdrom`)
PCMCIAMODULES="$PCMCIAMODULES
	       $(ls $KERNELROOT/lib/modules/$version/pcmcia | sed 's/\.o$//' )"

LOCALFSMODULES=""
NETFSMODULES=""

LOCALFSMODULES=$(resdeps "vfat")
NETFSMODULES=$(resdeps "nfs vfat")

mkdir -p initrd/modules

rm -rf local/modules network/modules ../../../RedHat/instimage/modules \
       pcmcia/modules netstg2/modules hdstg2/modules
mkdir -p local/modules network/modules ../../../RedHat/instimage/modules \
         pcmcia/modules netstg2/modules hdstg2/modules

copymodules "$NETMODULES" "./network/modules hdstg2/modules"
copymodules "$NETFSMODULES" "./network/modules ./pcmcia/modules"
copymodules "$SCSIMODULES" "./local/modules netstg2/modules"
copymodules "$LOCALFSMODULES" "./local/modules netstg2/modules hdstg2/modules"
copymodules "$CDMODULES" "./local/modules"
copymodules "$BLOCKMODULES"  "netstg2/modules hdstg2/modules"
copymodules "$PCMCIAMODULES" "./pcmcia/modules"

for I in local/modules network/modules pcmcia/modules; do
    for n in $NOTBOOTMODULES; do
	rm -f $I/$n.o
    done
done

for I in local/modules network/modules ../../../RedHat/instimage/modules \
	 pcmcia/modules netstg2/modules hdstg2/modules; do
    echo -n "Computing $I dependencies... "

    cd $I;

    SPACE2=`du -s . | awk '{print $1}'`

    /sbin/depmod -m $KERNELROOT/boot/System.map-$version -i -e *.o | \
          grep ':.*o' | \
          sed -e 's/\.o//g' \
              -e 's/lp: parport/lp: parport_pc/g' \
              -e 's/plip: parport/plip: parport_pc/g' > modules.dep
    if grep "unresolved symbol" modules.dep; then
	echo "ERROR - Unresolved symbols in $I"
    else
        echo "done. "
    fi

    # create the module-info file
    $MODLIST --modinfo-file $MODINFO --ignore-missing --modinfo \
	$(ls *.o | sed 's/\.o$//') > module-info

    # create the pcitable
    $TRIMPCITABLE *.o < $PCITABLE > pcitable

    echo -n "Balling $I modules... "
    mkdir $version
    mv $(ls *.o | egrep -v "$PRISTINEMODULES|(modules.dep)") $version
    find $version -type f | cpio $q -H crc -o | gzip -9 > modules.cgz
    rm -rf $version

    SPACE1=`du -s . | awk '{print $1}'`
    cd -

    DIFF=`expr $SPACE2 - $SPACE1`
    echo "done (saved ${DIFF}k)"
done

cp -f "$KERNELROOT/boot/vmlinuz-$version" boot/vmlinuz
cp boot/vmlinuz ../../../dosutils/autoboot/vmlinuz

rm -rf pcmcia/etc
mkdir -p pcmcia/etc/pcmcia
cp -a $KERNELROOT/etc/pcmcia/* pcmcia/etc/pcmcia

makedriverdisk "gdth" "gdth"
makedriverdisk "eata_dma" "eata_dma"
makedriverdisk "paride" "parport_pc parport pcd paride aten bpck comm dstr epat fit2 fit3 friq frpw kbic ktti on20 on26 epia ppa imm"

rm -rf $KERNELROOT