diskimage-builder/bin/disk-image-get-kernel

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#!/bin/bash
#
# Copyright 2012 Hewlett-Packard Development Company, L.P.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
set -e
SCRIPTNAME=$(basename $0)
export _LIB=$(dirname $0)/../lib
source $_LIB/die
function show_options () {
echo "Usage: $SCRIPTNAME -i <image> [-d <outdir>] [-o <prefix]"
echo
echo "Options:"
echo " -i filename -- extract kernel + ramdisk from this file"
echo " -d dir -- save files in \$dir; defaults to /tmp"
echo " -o prefix -- set the prefix of the output files; defaults to 'baremetal'"
echo " eg, baremetal-vmlinuz and baremetal-initrd"
echo " -x -- turn on tracing"
echo " -h -- print this message"
exit 0
}
TEMP=`getopt -o hd:i:o:x -n $SCRIPTNAME -- "$@"`
echo "XXX $TEMP"
if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi
# Note the quotes around `$TEMP': they are essential!
eval set -- "$TEMP"
export OUT_DIR=/tmp
export OUT_PFX=baremetal
while true ; do
case "$1" in
-d) export OUT_DIR=$2; shift 2 ;;
-i) export IMAGE_FILE=$2; shift 2 ;;
-o) export OUT_PFX=$2; shift 2 ;;
-h) show_options;;
-x) shift; set -x;;
--) shift ; break ;;
*) echo "Internal error!" ; exit 1 ;;
esac
done
if [[ ! -n "$IMAGE_FILE" ]]; then
die "You must specify an image to read from with -i \$filename"
elif [[ ! -r "$IMAGE_FILE" ]]; then
die "Image file $IMAGE_FILE is not readable"
fi
source $_LIB/img-defaults
source $_LIB/common-functions
source $_LIB/img-functions
echo "Extracting kernel + ramdisk from $IMAGE_FILE and writing them to $OUT_DIR"
# sets WORK_DIR
mount_qcow_image $IMAGE_FILE
# Dig up the initrd and kernel to use.
BOOTDIR="$WORK_DIR/boot"
KERNEL=$(basename `ls -1 $BOOTDIR/vmlinuz*generic | sort -n | tail -1`)
RAMDISK=$(basename `ls -1 $BOOTDIR/initrd*generic | sort -n | tail -1`)
sudo cp $BOOTDIR/$KERNEL $OUT_DIR/$OUT_PFX-vmlinuz
sudo cp $BOOTDIR/$RAMDISK $OUT_DIR/$OUT_PFX-initrd
sudo chmod a+r $OUT_DIR/$OUT_PFX-vmlinuz
sudo chmod a+r $OUT_DIR/$OUT_PFX-initrd
unmount_qcow_image
echo "$OUT_PFX-vmlinuz,$OUT_PFX-initrd"