Merge pull request #595 from ibuildthecloud/kernel-tar-helper

Add helper script to convert Ubuntu deb to kernel tgz

scripts/mk-kernel-tar-from-deb.sh

@@ -0,0 +1,44 @@
+#!/bin/bash
+set -e -x
+
+# This script will convert an Ubuntu deb file to the kernel tar structure the RancherOS build expects
+# For example 
+#
+#    ./scripts/mk-kernel-tar-from-deb.sh linux-image-3.19.0-28-generic_3.19.0-28.30_amd64.deb linux-image-extra-3.19.0-28-generic_3.19.0-28.30_amd64.deb linux-firmware_1.143.3_all.deb 
+#
+
+mkdir -p $(dirname $0)/../build
+BUILD=$(mktemp -d $(dirname $0)/../build/deb-XXXXX)
+mkdir -p $BUILD
+
+extract()
+{
+    if [ ! -e $1 ]; then
+        echo $1 does not exist
+        exit 1
+    fi
+
+    local deb=$(readlink -f $1)
+
+    cd $BUILD
+    rm -f data.tar.* 2>/dev/null || true
+    ar x $deb
+    tar xvf data.tar.*
+    cd -
+}
+
+for i in "$@"; do
+    extract $i
+done
+
+cd $BUILD
+
+KVER=$(ls ./lib/modules)
+depmod -b . $KVER
+
+echo Creating ${OLDPWD}/kernel.tar.gz
+tar cvzf ${OLDPWD}/kernel.tar.gz ./lib boot/vmlinuz*
+echo Created ${OLDPWD}/kernel.tar.gz
+
+cd -
+rm -rf ${BUILD}