diskimage-builder/elements/opensuse/root.d/10-opensuse-cloud-image

105 lines
3.7 KiB
Plaintext
Raw Normal View History

#!/bin/bash
set -eu
set -o pipefail
function find_free_nbd_device () {
# Return first free nbd device
return_device=''
for chk_device in /sys/class/block/nbd*; do
# find free nbd device by checking size field
size_chk=`cat $chk_device/size`
if [ "$size_chk" = "0" ]; then
# device looks free. lets use it.
return_device=$chk_device
break
fi
done
echo $return_device
}
[ -n "$ARCH" ]
[ -n "$TARGET_ROOT" ]
if [ 'amd64' = "$ARCH" ] ; then
ARCH="x86_64"
fi
if [ 'i386' = "$ARCH" ] ; then
ARCH="i586"
fi
DIB_CLOUD_IMAGES=${DIB_CLOUD_IMAGES:-http://download.opensuse.org/repositories/Cloud:/Images/images/}
DIB_RELEASE=${DIB_RELEASE:-13.1}
# FIXME: Hard coded build numbers, versions, etc.
# NOTE: Actual file name seems unstable, and has changed several times.
BASE_IMAGE_NAME=${BASE_IMAGE_NAME:-openSUSE-$DIB_RELEASE-OS-guest.$ARCH-0.0.2-Build3.1}
if [ -z "$DIB_OFFLINE" ] ; then
# XXX: Try to extract the filename of the current built from the index
# page. As there is one built available in the repo at a given time, this
# should work. This is a tempoary workaround until the fix for
# https://bugzilla.novell.com/show_bug.cgi?id=853882 is deployed
echo "Looking up current built of Base Image ($BASE_IMAGE_NAME):"
BASE_IMAGE_FILE=${BASE_IMAGE_FILE:-$(curl $DIB_CLOUD_IMAGES | \
sed -n "s/^.*\<a\ href\=\"\($BASE_IMAGE_NAME.*\.tar\.bz2\)\".*$/\1/p")}
if [ -n "$BASE_IMAGE_FILE" ]; then
echo "Using base image: $DIB_CLOUD_IMAGES/$BASE_IMAGE_FILE"
else
echo -e "Failed to extract image file name from $DIB_CLOUD_IMAGES" \
"\nPlease set BASE_IMAGE_FILE manually and retry."
exit 1
fi
else
BASE_IMAGE_FILE=${BASE_IMAGE_FILE:-$BASE_IMAGE_NAME-raw.tar.bz2}
fi
# FIXME: either check the checksums into git or verify the signature
# on the checksums. We should not be trusting checksums we download
# over HTTP
SHA256SUMS=${SHA256SUMS:-$DIB_CLOUD_IMAGES/$BASE_IMAGE_FILE.sha256}
CACHED_FILE=$DIB_IMAGE_CACHE/$BASE_IMAGE_FILE
if [ -n "$DIB_OFFLINE" -a -f "$CACHED_FILE" ] ; then
echo "Not checking freshness of cached $CACHED_FILE."
else
echo "Fetching Base Image"
$TMP_HOOKS_PATH/bin/cache-url $SHA256SUMS $DIB_IMAGE_CACHE/SHA256SUMS.openSUSE.$DIB_RELEASE.$ARCH
$TMP_HOOKS_PATH/bin/cache-url $DIB_CLOUD_IMAGES/$BASE_IMAGE_FILE $CACHED_FILE
pushd $DIB_IMAGE_CACHE
grep "$BASE_IMAGE_FILE" SHA256SUMS.openSUSE.$DIB_RELEASE.$ARCH | sha256sum --check -
popd
fi
# Extract the qcow2 image and qcow2.sha256 files.
# to make life easier create a temp directory to unzip the files.
# TODO(NobodyCam): validate qcow2 with sha256 file
UNTAR_TO_LOCATION=$TMP_MOUNT_PATH/openSUSE/Untar
mkdir -p $UNTAR_TO_LOCATION
sudo tar -C $UNTAR_TO_LOCATION -xjf $DIB_IMAGE_CACHE/$BASE_IMAGE_FILE
# mount qcow
nbd_device=$(find_free_nbd_device)
mount_device=/dev/`basename $nbd_device`
sudo qemu-nbd -c $mount_device $UNTAR_TO_LOCATION/$BASE_IMAGE_NAME.qcow2
# Ensure that $mount_device is a block device.
if [ -b $mount_device ]; then
org_dir=`pwd`
# make a mount point for the image
mkdir $UNTAR_TO_LOCATION/mnt
# mount the images root partition
sudo mount ${mount_device}p1 $UNTAR_TO_LOCATION/mnt
# copy contents to the build area
cd $UNTAR_TO_LOCATION/mnt
sudo find . -print | sudo cpio -padmu $TARGET_ROOT
# ensure we are not in the directory about to be unmounted
cd $org_dir
echo "Copied $UNTAR_TO_LOCATION/mnt to $TARGET_ROOT"
# unmount and remove the device used for the copy
sudo umount $UNTAR_TO_LOCATION/mnt
sudo qemu-nbd -d $mount_device
else
echo "Unable to extract openSuSe Image."
exit 1
fi
# remove the temp directory
sudo rm -rf $UNTAR_TO_LOCATION