#! /bin/sh
# grab_patch_kernel:
# download and patch/merge a given kernel version

# do_patchdir:
# patch the package:
# Apply all of patchdir/ (in alpha/numeric order) to the package.
# User must make sure that the patches are numbered/sorted in the
# required order.
do_patchdir() {
    kernel_id="$1"
    src_dir="$2"
    patchdir="$3"

    cd $src_dir
    for patchfile in $patchdir/* ; do
	echo "Applying patch: $patchfile..."

	if [ ${patchfile%.gz} != $patchfile ]; then
		cat_cmd="zcat"
	elif [ ${patchfile%.bz2} != $patchfile ]; then
		cat_cmd="bzcat"
	else
		cat_cmd="cat"
	fi

	if [ -f $patchfile ]; then
		$cat_cmd $patchfile | patch -p1
		sts=$?
	elif [ -f $patchdir/$patchfile ]; then
		$cat_cmd $patchdir/$patchfile | patch -p1
		sts=$?
	else
		echo "Error: did not find patch: $patchfile"
		return -5
	fi

	if [ $sts -ne 0 ]; then
		echo "Error: patch $patchfile failed."
		return -10
	fi
    done

    return 0
}

. run_profile.txt
. $base_dir/plans/commands/common.fns
[ -f /etc/crucible.cfg ] && source /etc/crucible.cfg

[ -f $ETC_DIR/global.cfg ] && source $ETC_DIR/global.cfg
if [ "$SRC_DIR" == "" ]; then
	SRC_DIR="/usr/local/src"
fi

kernel_info	# gives kernel_id, kernel_label

SUT=`hostname -s`
out_dir=$run_dir/logs/$SUT
[ -d $out_dir ] || mkdir -p $out_dir

sut_type=`uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc/ -e s/arm.*/arm/ \
     -e s/s390.*/s390/ -e s/sa110/arm/ -e s/ppc64/powerpc/ -e s/parisc64/parisc/`

if [ -e "$all_suts_dir/$SUT/profile.txt" ]; then
    sut_type=`grep ^sut_type= $all_suts_dir/$SUT/profile.txt | cut -d '=' -f 2`
fi

karch=`uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc/ -e s/arm.*/arm/ \
     -e s/s390.*/s390/ -e s/sa110/arm/ -e s/ppc64/powerpc/ -e s/parisc64/parisc/`

pwd=`/bin/pwd`

src_dir="$SRC_DIR/linux-$kernel_id"

# clear out src_dir for no collisions
echo "clear out: $src_dir"
[ -d $src_dir ] && rm -rf $src_dir

# use "$ETC_DIR/grab-kernel.rc" file and run 'grab-kernel $version $SRC_DIR'

echo "now run: grab_kernel '$kernel_id' '$SRC_DIR'"
grab_kernel "$kernel_id" "$SRC_DIR"

if [ "$patchdir" != "" ]; then
	do_patchdir "$kernel_id" "$src_dir" "$patchdir"
	sts=$?
	if [ $sts -ne 0 ]; then
		echo "applying patchdir failed"
		exit 99
	else
		echo "applying patchdir done"
	fi
else
	echo "no patchdir to apply"
fi

cd $pwd