Allow for multiple image outputs from raw source

When uploading images to multiple clouds it is possible that the same
image will be needed in multiple formats to accomodate hypervisors
across clouds. Update disk-image-create's -t flag to take a list of
desired output image formats so that a single disk-image-create can
output all of the desired image formats.

Change-Id: If121b2342ae888855ba435aa3189f039e985b812

bin/disk-image-create

@@ -45,7 +45,8 @@ function show_options () {
     echo "Options:"
     echo "    -a i386|amd64|armhf -- set the architecture of the image(default amd64)"
     echo "    -o imagename -- set the imagename of the output image file(default image)"
-    echo "    -t qcow2|tar -- set the imagetype of the output image file(default qcow2)"
+    echo "    -t qcow2,tar -- set the image types of the output image files (default qcow2)"
+    echo "       File types should be comma separated"
     echo "    -x -- turn on tracing"
     echo "    -u -- uncompressed; do not compress the image - larger but faster"
     echo "    -c -- clear environment before starting work"
@@ -85,6 +86,7 @@ function show_options () {
 }
 
 INSTALL_PACKAGES=""
+IMAGE_TYPES=("qcow2")
 COMPRESS_IMAGE="true"
 DIB_ROOT_LABEL=""
 TEMP=`getopt -o a:ho:t:xucnp: -l no-tmpfs,offline,help,min-tmpfs:,image-size:,image-cache:,max-online-resize:,qemu-img-options:,root-label: -n $SCRIPTNAME -- "$@"`
@@ -97,7 +99,7 @@ while true ; do
     case "$1" in
         -a) export ARCH=$2; shift 2 ;;
         -o) export IMAGE_NAME=$2; shift 2 ;;
-        -t) export IMAGE_TYPE=$2; shift 2 ;;
+        -t) IFS="," read -a IMAGE_TYPES <<< "$2"; export IMAGE_TYPES ; shift 2 ;;
         -h|--help) show_options; exit 0;;
         -x) shift; set -x;;
         -u) shift; export COMPRESS_IMAGE="";;
@@ -137,7 +139,10 @@ fi
 
 arg_to_elements "$@"
 
-export IMAGE_NAME=${IMAGE_NAME%%\.${IMAGE_TYPE}}
+if [ "${#IMAGE_TYPES[@]}" = "1" ]; then
+  export IMAGE_NAME=${IMAGE_NAME%%\.${IMAGE_TYPES[0]}}
+fi
+
 # FS_TYPE isn't available until after we source img-defaults
 if [ -z "$DIB_ROOT_LABEL" ]; then
     # NOTE(bnemec): XFS has a limit of 12 characters for filesystem labels
@@ -207,18 +212,27 @@ mount_proc_dev_sys
 run_d_in_target finalise
 finalise_base
 
-if [ "$IMAGE_TYPE" == "tar" ]; then
-  sudo tar -C ${TMP_BUILD_DIR}/mnt -cf $IMAGE_NAME.tar --exclude ./sys \
-           --exclude ./proc --xattrs --xattrs-include=\* .
-  sudo chown $USER: $IMAGE_NAME.tar
-fi
+for X in ${!IMAGE_TYPES[@]} ; do
+  if [ "${IMAGE_TYPES[$X]}" == "tar" ]; then
+    sudo tar -C ${TMP_BUILD_DIR}/mnt -cf $IMAGE_NAME.tar --exclude ./sys \
+             --exclude ./proc --xattrs --xattrs-include=\* .
+    sudo chown $USER: $IMAGE_NAME.tar
+    unset IMAGE_TYPES[$X]
+  fi
+done
 
 unmount_image
 
-if [ "$IS_RAMDISK" == "0" -a "$IMAGE_TYPE" != "tar" ]; then
-  compress_and_save_image $IMAGE_NAME.$IMAGE_TYPE
+if [ "$IS_RAMDISK" == "0" ]; then
+  for IMAGE_TYPE in ${IMAGE_TYPES[@]} ; do
+    compress_and_save_image $IMAGE_NAME.$IMAGE_TYPE
+  done
+  rm $TMP_IMAGE_PATH
+  cleanup_dirs
 else
   # This is a ramdisk build, we have already extracted the kernel and ramdisk
   # by this point.
   rm $TMP_IMAGE_PATH
 fi
+# All done!
+trap EXIT

elements/ramdisk/post-install.d/99-build-ramdisk

@@ -39,5 +39,8 @@ populate_udev
 SCRIPT_HOME=/tmp/in_target.d/bin TMP_HOOKS_PATH=/tmp/in_target.d run_d ramdisk-install
 finalise_image
 save_image /tmp/ramdisk
+# In the past save_image did this for us. If EXIT handler is not
+# reset ramdisk image builds fail.
+trap EXIT
 cp /boot/vmlinuz-${KERNEL_VERSION} /tmp/kernel
 chmod o+r /tmp/kernel

lib/common-functions

@@ -39,6 +39,7 @@ function mk_build_dir () {
   trap trap_cleanup EXIT
   echo Building in $TMP_BUILD_DIR
   export TMP_IMAGE_PATH=$TMP_IMAGE_DIR/image.raw
+  export OUT_IMAGE_PATH=$TMP_IMAGE_PATH
   export TMP_HOOKS_PATH=$TMP_BUILD_DIR/hooks
 }
 
@@ -49,10 +50,7 @@ function finish_image () {
       mv "$1" "$old_image"
     fi
 
-    mv $TMP_IMAGE_PATH $1
-    cleanup_dirs
-    # All done!
-    trap EXIT
+    mv $OUT_IMAGE_PATH $1
     echo "Image file $1 created..."
 }
 

lib/img-functions

@@ -121,9 +121,8 @@ function compress_and_save_image () {
         EXTRA_OPTIONS=""
     fi
     qemu-img convert ${COMPRESS_IMAGE:+-c} -f raw $TMP_IMAGE_PATH -O $IMAGE_TYPE $EXTRA_OPTIONS $1-new
-    rm $TMP_IMAGE_PATH
 
-    TMP_IMAGE_PATH=$1-new
+    OUT_IMAGE_PATH=$1-new
     finish_image $1
 }