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Diffstat (limited to 'tools/samplevnf-img-dpdk-samplevnf-modify')
| -rwxr-xr-x | tools/samplevnf-img-dpdk-samplevnf-modify | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/tools/samplevnf-img-dpdk-samplevnf-modify b/tools/samplevnf-img-dpdk-samplevnf-modify new file mode 100755 index 00000000..a79fb216 --- /dev/null +++ b/tools/samplevnf-img-dpdk-samplevnf-modify @@ -0,0 +1,194 @@ +#!/bin/bash + +# Copyright (c) 2016-2017 Intel Corporation +# +# 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. + +# samplevnf-img-dpdk-nsb-modify - download and modify a Ubuntu cloud image +# +# The actual customization is done by a script passed with an absolute path as +# the only single argument. The command needs to be invoked as sudo +# +# Example invocation: +# samplevnf-img-dpdk-nsb-modify /home/samplevnf/tools/ubuntu-server-cloudimg-nsb-modify.sh +# +# Warning: the script will create files by default in: +# /tmp/workspace/samplevnf +# the files will be owned by root! +# +# TODO: image resize is needed if the base image is too small +# +set -e +set -x + +die() { + echo "error: $1" >&2 + exit 1 +} + +test $# -eq 1 -o $# -eq 2 || die "no image specific script as argument" +test $(id -u) -eq 0 || die "should invoke using sudo" + +cmd=$1 +RELEASE=$2 +test -x $cmd +mountdir="/mnt/samplevnf" +workspace=${WORKSPACE:-"/tmp/workspace/samplevnf"} +host=${HOST:-"cloud-images.ubuntu.com"} +release=${RELEASE:-"xenial"} +boot_mode="disk1" +YARD_IMG_ARCH="amd64" +if [[ "${YARD_IMG_ARCH}" = "arm64" ]]; then + boot_mode="uefi1" +fi + +image_path="${release}/current/${release}-server-cloudimg-${YARD_IMG_ARCH}-${boot_mode}.img" +image_url=${IMAGE_URL:-"https://${host}/${image_path}"} +sha256sums_path="${release}/current/SHA256SUMS" +sha256sums_url=${SHA256SUMS_URL:-"https://${host}/${sha256sums_path}"} + +imgfile="${workspace}/samplevnf-image.img" +raw_imgfile_basename="samplevnf-${release}-server.raw" +raw_imgfile="${workspace}/${raw_imgfile_basename}" +filename=$(basename $image_url) +YARD_IMG_ARCH="amd64" #Neha added this just for testing +apt-get install -y parted + +# download and checksum base image, conditionally if local copy is outdated +download() { + test -d $workspace || mkdir -p $workspace + cd $workspace + rm -f SHA256SUMS # always download the checksum file to a detect stale image + wget $sha256sums_url + test -e $filename || wget -nc --progress=dot:giga $image_url + grep $filename SHA256SUMS | sha256sum -c || + if [ $? -ne 0 ]; then + rm $filename + wget -nc --progress=dot:giga $image_url + grep $filename SHA256SUMS | sha256sum -c + fi + + for i in $(seq 0 9); do + [ -a /dev/loop$i ] || mknod -m 660 /dev/loop$i b 7 $i + done + + qemu-img convert $filename $raw_imgfile + cd - +} + +# mount image +setup() { +# qemu-img resize $raw_imgfile +5GB + mkdir -p $mountdir + + loopdevice=$(kpartx -l $raw_imgfile | head -1 | cut -f1 -d ' ') + + kpartx -av $raw_imgfile + + # for trouble shooting + sleep 2 + dmsetup ls + fuser -c /dev/loop0 + fuser -f /dev/loop0 + parted -l /dev/${loopdevice:0:5} || true + mount /dev/mapper/$loopdevice $mountdir + mount -t proc none $mountdir/proc + + sudo resize2fs /dev/mapper/$loopdevice + cp $cmd $mountdir/$(basename $cmd) + YARD_IMG_ARCH="amd64" #Neha added this just for testing + if [ "${YARD_IMG_ARCH}" = "arm64" ]; then + cp /usr/bin/qemu-aarch64-static $mountdir/usr/bin + fi +} + +# modify image running a script using in a chrooted environment +modify() { + # resolv.conf does not exist in base image, pass nameserver value from host + nameserver_ip=$(grep -m 1 '^nameserver' \ + /etc/resolv.conf | awk '{ print $2 '}) + + # prevent init scripts from running during install + echo $'#!/bin/sh\nexit 101' >$mountdir/usr/sbin/policy-rc.d + chmod a+x $mountdir/usr/sbin/policy-rc.d + + chroot $mountdir /$(basename $cmd) $nameserver_ip + + rm -rf $mountdir/usr/sbin/policy-rc.d + + umount -f $mountdir/proc + umount -l $mountdir + + qemu-img convert -c -o compat=0.10 -O qcow2 $raw_imgfile $imgfile + + if dmsetup table | grep $loopdevice; then + dmsetup clear $loopdevice || true + fi +} + +# cleanup (umount) the image +cleanup() { + # designed to be idempotent + mount | grep $mountdir/proc && umount -l $mountdir/proc + mount | grep $mountdir && umount -l $mountdir + mount | grep "/mnt/${release}" && umount -l "/mnt/${release}" + + if [ -f "${raw_imgfile}" ]; then + #kpartx -dv $raw_imgfile sometimes failed, we should checked it agein. + #if [ -z "$(kpartx -l $raw_imgfile | grep 'loop deleted')" ]; then + # kpartx -dv $raw_imgfile + #fi + kpartx -dv $raw_imgfile || true + fi + + rm -f $raw_imgfile + rm -rf $mountdir +} + +exitcode="" +error_trap() +{ + local rc=$? + + set +e + + if [ -z "$exitcode" ]; then + exitcode=$rc + fi + + dmesg -T | tail -50 + + cleanup + + echo "Image build failed with $exitcode" + + exit $exitcode +} + +main() { + cleanup + + trap "error_trap" EXIT SIGTERM + + download + setup + modify + + trap - EXIT SIGTERM + cleanup + + echo "the modified image is found here: $imgfile" +} + +main + |