#!/bin/sh

#
# A simple script we are using to get the latest mainline kernel
# tar ball
#

wget https://www.kernel.org/releases.json
if [ $? -ne 0 ]; then
	echo "Could not download kernel.org/releases.json"
	exit 1
fi

VER=$(cat releases.json | python2.7 -c "import sys, json; print json.load(sys.stdin)['latest_stable']['version']")
if [ $? -ne 0 ]; then
	echo "Could not parse release.json"
	exit 1
fi

if [ "z$VER" = "z" ]; then
	echo "Could not determine latest release version"
	exit 1
fi

wget https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-"$VER".tar.gz
if [ $? -ne 0 ]; then
	echo "Could not download $VER kernel version"
	exit 1
fi

tar xf linux-"$VER".tar.gz
if [ $? -ne 0 ]; then
	echo "Could not untar kernel tar ball"
	exit 1
fi

mv linux-"$VER" linux