build_image: publish kernel along with base image for generating updates

build_library/build_image_util.sh

@@ -282,6 +282,7 @@ finish_image() {
   local disk_layout="$2"
   local root_fs_dir="$3"
   local image_contents="$4"
+  local image_kernel="$5"
   local install_grub=0
 
   local disk_img="${BUILD_DIR}/${image_name}"
@@ -364,6 +365,13 @@ finish_image() {
 	   "${root_fs_dir}/boot/coreos/vmlinuz-a"
   fi
 
+  if [[ -n "${image_kernel}" ]]; then
+    # copying kernel from vfat so ignore the permissions
+    cp --no-preserve=mode \
+        "${root_fs_dir}/boot/coreos/vmlinuz-a" \
+        "${BUILD_DIR}/${image_kernel}"
+  fi
+
   ${BUILD_LIBRARY_DIR}/generate_kernel_hash.sh "${root_fs_dir}/boot/coreos/vmlinuz-a" ${COREOS_VERSION} >${pcr_dir}/kernel.config
   rm -rf "${BUILD_DIR}"/configroot
   cleanup_mounts "${root_fs_dir}"

build_library/prod_image_util.sh

@@ -66,6 +66,7 @@ create_prod_image() {
   local image_contents="${image_name%.bin}_contents.txt"
   local image_packages="${image_name%.bin}_packages.txt"
   local image_licenses="${image_name%.bin}_licenses.txt"
+  local image_kernel="${image_name%.bin}.vmlinuz"
   local image_pcr_policy="${image_name%.bin}_pcr_policy.zip"
 
   start_image "${image_name}" "${disk_layout}" "${root_fs_dir}" "${update_group}"
@@ -112,11 +113,12 @@ EOF
   sudo mv -n ${root_fs_dir}/etc/pam.d/* ${root_fs_dir}/usr/lib/pam.d/
   sudo rmdir ${root_fs_dir}/etc/pam.d
 
-  finish_image "${image_name}" "${disk_layout}" "${root_fs_dir}" "${image_contents}"
+  finish_image "${image_name}" "${disk_layout}" "${root_fs_dir}" "${image_contents}" "${image_kernel}"
 
   upload_image -d "${BUILD_DIR}/${image_name}.bz2.DIGESTS" \
       "${BUILD_DIR}/${image_contents}" \
       "${BUILD_DIR}/${image_packages}" \
       "${BUILD_DIR}/${image_name}" \
+      "${BUILD_DIR}/${image_kernel}" \
       "${BUILD_DIR}/${image_pcr_policy}"
 }