251 lines
7.9 KiB
Text
251 lines
7.9 KiB
Text
function unmount_image () {
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# unmount from the chroot
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# Don't use TMP_MOUNT_PATH here, it might not have been set.
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sudo umount -f $TMP_BUILD_DIR/mnt/sys || true
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sudo umount -f $TMP_BUILD_DIR/mnt/proc || true
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sudo umount -f $TMP_BUILD_DIR/mnt/dev || true
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sudo umount -f $TMP_BUILD_DIR/mnt/tmp/in_target.d || true
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# give it a second (ok really 5) to umount XXX - why? should instead track
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# the mount data / lsof etc.
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sleep 5
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# oh ya don't want to forget to unmount the image
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sudo umount -f $TMP_BUILD_DIR/mnt || true
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# having disk corruption issues; one possibility is qemu-nbd not flush dirty
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# pages on disconnect?
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sync
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if [ -n "$EXTRA_UNMOUNT" ]; then
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$EXTRA_UNMOUNT
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fi
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}
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function cleanup () {
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unmount_image
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rm -rf $TMP_BUILD_DIR
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}
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function mk_build_dir () {
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export TMP_BUILD_DIR=$(mktemp -t -d image.XXXXXXXX)
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[ $? -eq 0 ] || die "Failed to create tmp directory"
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trap cleanup EXIT
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echo Building in $TMP_BUILD_DIR
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export TMP_IMAGE_PATH=$TMP_BUILD_DIR/image
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export TMP_HOOKS_PATH=$TMP_BUILD_DIR/hooks
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}
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function ensure_nbd () {
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NBD=`which qemu-nbd`
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if [ -z "$NBD" ]; then
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echo "Need qemu-nbd to build qcow2 files."
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sudo apt-get install qemu-utils
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fi
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# prep nbd for mounting
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(lsmod | grep '^nbd ') || sudo modprobe nbd max_part=16
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}
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function ensure_base_available () {
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# TODO: don't cache -current forever.
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if [ ! -f $IMG_PATH/$BASE_IMAGE_FILE ] ; then
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echo "Fetching Base Image"
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wget $CLOUD_IMAGES/$RELEASE/current/$BASE_IMAGE_FILE -O $IMG_PATH/$BASE_IMAGE_FILE.tmp
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mv $IMG_PATH/$BASE_IMAGE_FILE.tmp $IMG_PATH/$BASE_IMAGE_FILE
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fi
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}
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function ensure_sudo () {
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sudo echo "Ensuring sudo is available"
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}
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function mount_tmp_image () {
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mkdir $TMP_BUILD_DIR/mnt
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sudo mount $@ $TMP_BUILD_DIR/mnt
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[ $? -eq 0 ] || die "Failed to mount image"
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export TMP_MOUNT_PATH=$TMP_BUILD_DIR/mnt
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}
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function create_base () {
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# Extract the base image
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sudo tar -C $TMP_MOUNT_PATH -xzf $IMG_PATH/$BASE_IMAGE_FILE
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# Configure Image
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# Setup resolv.conf so we can chroot to install some packages
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# XXXX: Should store the old state rather than unlink; then restore later.
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if [ -L $TMP_MOUNT_PATH/etc/resolv.conf ] ; then
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sudo unlink $TMP_MOUNT_PATH/etc/resolv.conf
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fi
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if [ -f $TMP_MOUNT_PATH/etc/resolv.conf ] ; then
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sudo rm -f $TMP_MOUNT_PATH/etc/resolv.conf
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fi
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# Recreate resolv.conf
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sudo touch $TMP_MOUNT_PATH/etc/resolv.conf
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sudo chmod 777 $TMP_MOUNT_PATH/etc/resolv.conf
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echo nameserver 8.8.8.8 > $TMP_MOUNT_PATH/etc/resolv.conf
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# supporting kernel file systems
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sudo mount -t proc none $TMP_MOUNT_PATH/proc
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sudo mount --bind /dev $TMP_MOUNT_PATH/dev
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sudo mount -t sysfs none $TMP_MOUNT_PATH/sys
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# If we have a network proxy, use it.
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if [ -n "$http_proxy" ] ; then
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sudo dd of=$TMP_MOUNT_PATH/etc/apt/apt.conf.d/60img-build-proxy << _EOF_
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Acquire::http::Proxy "$http_proxy";
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_EOF_
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fi
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}
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# Helper function to run a command inside the chroot
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function run_in_target() {
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# -E to preserve http_proxy
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sudo -E chroot $TMP_MOUNT_PATH "$@"
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}
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function generate_hooks () {
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mkdir -p $TMP_HOOKS_PATH
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for _FLAVOUR in $IMAGE_FLAVOUR ; do
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[ -d $FLAVOURS_DIR/$_FLAVOUR ] || die "The flavour does not exist." ;
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cp -t $TMP_HOOKS_PATH -a $FLAVOURS_DIR/$_FLAVOUR/* ;
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done
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}
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# Check that a real flavour has been chosen (prevents foot-guns)
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function check_flavour () {
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[ -d $TMP_HOOKS_PATH ] || generate_hooks
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}
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# Helper function to run a directory of scripts inside the chroot
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function run_d_in_target() {
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check_flavour
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# If we can find a directory of hooks to run in the target filesystem, bind
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# mount it into the target and then execute run-parts in a chroot
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if [ -d ${TMP_HOOKS_PATH}/$1.d ] ; then
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sudo mkdir $TMP_MOUNT_PATH/tmp/in_target.d
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sudo mount --bind ${TMP_HOOKS_PATH} $TMP_MOUNT_PATH/tmp/in_target.d
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sudo mount -o remount,ro,bind ${TMP_HOOKS_PATH} $TMP_MOUNT_PATH/tmp/in_target.d
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run_in_target run-parts -v /tmp/in_target.d/$1.d
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sudo umount -f $TMP_MOUNT_PATH/tmp/in_target.d
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sudo rmdir $TMP_MOUNT_PATH/tmp/in_target.d
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fi
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}
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# Run a directory of hooks outside the target.
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function run_d() {
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check_flavour
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if [ -d ${TMP_HOOKS_PATH}/$1.d ] ; then
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run-parts ${TMP_HOOKS_PATH}/$1.d
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fi
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}
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function prepare_first_boot () {
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if [ -d ${TMP_HOOKS_PATH}/first-boot.d ] ; then
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sudo cp -t $TMP_MOUNT_PATH/etc/ -a $TMP_HOOKS_PATH/first-boot.d
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run_in_target mv /etc/rc.local /etc/rc.local.REAL
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sudo dd of=$TMP_MOUNT_PATH/etc/rc.local <<EOF
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#!/bin/bash
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set -e
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set -o xtrace
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run-parts -v /etc/first-boot.d
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rm -fr /etc/first-boot.d
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mv /etc/rc.local.REAL /etc/rc.local
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exit 0
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EOF
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run_in_target chmod 755 /etc/rc.local
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fi
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}
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function finalise_base () {
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# Undo our proxy support
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sudo rm -f $TMP_MOUNT_PATH/etc/apt/apt.conf.d/60img-build-proxy
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# Now remove the resolv.conf we created above
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sudo rm -f $TMP_MOUNT_PATH/etc/resolv.conf
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# The we need to recreate it as a link
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sudo ln -sf ../run/resolvconf/resolv.conf $TMP_MOUNT_PATH/etc/resolv.conf
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}
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function compress_image () {
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# Recreate our image to throw away unnecessary data
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qemu-img convert -c $TMP_IMAGE_PATH -O qcow2 $TMP_IMAGE_PATH-new
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rm $TMP_IMAGE_PATH
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mv $TMP_IMAGE_PATH-new $TMP_IMAGE_PATH
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}
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function save_image () {
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# TODO: this really should rename the old file
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if [ -f $1 ] ; then
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echo "Old Image file Found REMOVING"
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rm -f $1
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fi
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cp $TMP_IMAGE_PATH $1
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rm -r $TMP_BUILD_DIR
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# All done!
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trap EXIT
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echo "Image file $1 created..."
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}
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function block_apt_translations () {
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# Configure APT not to fetch translations files
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sudo dd of=$TMP_MOUNT_PATH/etc/apt/apt.conf.d/95no-translations <<EOF
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APT::Acquire::Languages "none";
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EOF
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# And now make sure that we don't fall foul of Debian bug 641967
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find $TMP_MOUNT_PATH/var/lib/apt/lists/ -type f -name '*_i18n_Translation-*' -exec sudo rm -f {} \;
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}
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function block_daemons () {
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# Prevent package installs from starting daemons
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sudo mv $TMP_MOUNT_PATH/sbin/start-stop-daemon $TMP_MOUNT_PATH/sbin/start-stop-daemon.REAL
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sudo dd of=$TMP_MOUNT_PATH/sbin/start-stop-daemon <<EOF
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#!/bin/sh
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echo
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echo "Warning: Fake start-stop-daemon called, doing nothing"
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EOF
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sudo chmod 755 $TMP_MOUNT_PATH/sbin/start-stop-daemon
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sudo mv $TMP_MOUNT_PATH/sbin/initctl $TMP_MOUNT_PATH/sbin/initctl.REAL
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sudo dd of=$TMP_MOUNT_PATH/sbin/initctl <<EOF
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#!/bin/sh
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echo "initctl (tripleo 1.0)"
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echo "Warning: Fake initctl called, doing nothing"
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EOF
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sudo chmod 755 $TMP_MOUNT_PATH/sbin/initctl
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sudo mv $TMP_MOUNT_PATH/usr/sbin/invoke-rc.d $TMP_MOUNT_PATH/usr/sbin/invoke-rc.d.REAL
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sudo dd of=$TMP_MOUNT_PATH/usr/sbin/invoke-rc.d <<EOF
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#!/bin/sh
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echo "invoke-rc.d (tripleo 1.0)"
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echo "Warning: Fake inovke-rc.d called, doing nothing"
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EOF
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sudo chmod 755 $TMP_MOUNT_PATH/usr/sbin/invoke-rc.d
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}
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function unblock_daemons () {
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sudo mv $TMP_MOUNT_PATH/sbin/start-stop-daemon.REAL $TMP_MOUNT_PATH/sbin/start-stop-daemon
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sudo mv $TMP_MOUNT_PATH/sbin/initctl.REAL $TMP_MOUNT_PATH/sbin/initctl
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sudo mv $TMP_MOUNT_PATH/usr/sbin/invoke-rc.d.REAL $TMP_MOUNT_PATH/usr/sbin/invoke-rc.d
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}
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function do_pre_install () {
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block_daemons
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block_apt_translations
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# Install baseline packages and tools
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run_in_target apt-get -y update
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run_in_target apt-get -y install python-software-properties
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run_in_target add-apt-repository -y ppa:tripleo/demo
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# Uncomment to get the bleeding edge - this should be a flavour thing.
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# run_in_target add-apt-repository -y ppa:tripleo/demo-staging
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# Run pre-install scripts. These do things that prepare the chroot for package installs
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run_d_in_target pre-install
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run_in_target apt-get -y update
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}
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function do_install () {
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# These are useful, or at worst not harmful, for all imges we build.
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run_in_target apt-get -y install linux-image-generic vlan open-iscsi
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# Call install scripts to pull in the software users want.
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run_d_in_target install
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unblock_daemons
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}
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