#!/bin/sh

# Script to build all kernel modules, whose source packages are
# installed to /usr/src/*.tar.gz, for the running kernel.

KVERS=`uname -r`

if ( ! dpkg --status kernel-image-${KVERS} 2>/dev/null | egrep -q '^Status:.*installed' )
then
    echo "The running kernel is not installed as a Debian package." 1>&2
    exit 1
fi

alt_KVERS=`echo ${KVERS} | cut -f1 -d-`
if ( dpkg --status kernel-headers-${KVERS} 2>/dev/null | egrep -q '^Status:.*installed' )
then
    header_KVERS=${KVERS}
elif ( dpkg --status kernel-headers-${alt_KVERS} 2>/dev/null | egrep -q '^Status:.*installed' )
then
    header_KVERS=${alt_KVERS}
else
    echo kernel-headers-${KVERS} or kernel-headers-${alt_KVERS} is required 1>&2
    exit 2
fi

trap 'rm -rf $tmpdir;exit 4' 2
trap 'rm -rf $tmpdir;exit 4' 15

curdir=`pwd`
tmpdir=`mktemp -d`

if [ $# -gt 0 ]
then
    while test $# -gt 0
    do
	if [ -f /usr/src/"$1".tar.gz ]
	then
	    ( cd ${tmpdir} && tar xzf /usr/src/"$1".tar.gz )
	elif [ -f /usr/src/"$1".tar.bz2 ]
	then
	    ( cd ${tmpdir} && tar xjf /usr/src/"$1".tar.bz2 )
	elif [ -d /usr/src/modules/"$1" ]
	then
	    ( cd /usr/src/modules && tar cf - "$1" )|( cd ${tmpdir} && tar xpf - )
	elif [ -f "$1" ]
	then
	    ( cd ${tmpdir} && tar xzf "$1" )
	else
	    rm -rf ${tmpdir}
	    echo "Illegal option: $1" 2>&1
	    exit 3
	fi
	shift
    done
else
    if [ -d /usr/src/modules ]
    then
	cd /usr/src
	tar cf - modules |( cd ${tmpdir} && tar xpf - )
    fi
    for f in /usr/src/*.tar.gz /usr/src/*.tar.bz2
    do
        case ${f} in
	    /usr/src/kernel-source-*)
		;;
	    *.gz)
		if [ -f ${f} ]
		then
		    ( cd ${tmpdir} && tar xzf ${f} )
		fi
		;;
	    *.bz2)
		if [ -f ${f} ]
		then
		    ( cd ${tmpdir} && tar xjf ${f} )
		fi
		;;
	esac
    done
fi

cd /usr/src
tar chf - kernel-headers-${header_KVERS} |( cd ${tmpdir} && tar xpf - )

KSRC=${tmpdir}/kernel-headers-${header_KVERS}
KDREV=`dpkg --status kernel-headers-${header_KVERS} | awk '/^Version:/{print $2}'`
for d in ${tmpdir}/modules/*
do
    echo "==== Build "`basename "$d"`" ===="
    cd "$d"
    fakeroot debian/rules kdist_clean
    fakeroot debian/rules KSRC=${KSRC} KVERS=${KVERS} KDREV=${KDREV} kdist_image
done

for f in ${tmpdir}/*.deb ${tmpdir}/modules/*.deb
do
    test -f "$f" && mv "$f" ${curdir}
done
cd ${curdir}
rm -rf ${tmpdir}