diskimage-builder/bin/disk-image-get-kernel
Om Kumar bccffc8bfd Refactor code to select boot kernel
The script to find best kernel from image (used by vm
and baremetal element) is duplicated and is not in sync
with each other. Moving the code to img-functions as a
function will reduce duplicated code and make it reusable
in future.

Since img-functions is not accessible in chroot env,
kernel selection is being moved from finalise.d to
cleanup.d in the vm element.

Change-Id: I8fbccc13a2c61a5191ef9ea5d2a8302a3e43b000
2014-06-13 11:46:39 +05:30

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#!/bin/bash
#
# Copyright 2012 Hewlett-Packard Development Company, L.P.
#
# 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 $0)
SCRIPT_HOME=$(dirname $0)
if [ -d $SCRIPT_HOME/../share/diskimage-builder ]
then
export _PREFIX=$SCRIPT_HOME/../share/diskimage-builder
else
export _PREFIX=$SCRIPT_HOME/..
fi
export _LIB=$_PREFIX/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
}
echo 'DEPRECATED: Please consider using the `baremetal` element.'
echo
TEMP=`getopt -o hd:i:o:x -n $SCRIPTNAME -- "$@"`
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 to $OUT_PFX-vmlinuz and $OUT_PFX-initrd in $OUT_DIR"
ensure_nbd
# sets WORK_DIR
mount_qcow_image $IMAGE_FILE
select_boot_kernel_initrd $WORK_DIR
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