tools: Add support for caching VirtioFS artefacts

Let's add support for caching VirtioFS artefacts that are generated using
the kata-deploy local-build scripts.

Right now those are not used, but we'll switch to using them very soon
as part of upcoming changes of how we build the components we test in
our CI.

Fixes: #6480

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
Signed-off-by: Gabriela Cervantes <gabriela.cervantes.tellez@intel.com>

tools/packaging/scripts/lib.sh

@@ -180,3 +180,24 @@ get_shim_v2_image_name() {
 	shim_v2_script_dir="${repo_root_dir}/tools/packaging/static-build/shim-v2"
 	echo "${BUILDER_REGISTRY}:shim-v2-go-$(get_from_kata_deps "languages.golang.meta.newest-version")-rust-$(get_from_kata_deps "languages.rust.meta.newest-version")-$(get_last_modification ${shim_v2_script_dir})-$(uname -m)"
 }
+
+get_virtiofsd_image_name() {
+	ARCH=$(uname -m)
+	case ${ARCH} in
+	        "aarch64")
+	                libc="musl"
+	                ;;
+	        "ppc64le")
+	                libc="gnu"
+	                ;;
+	        "s390x")
+	                libc="gnu"
+	                ;;
+	        "x86_64")
+	                libc="musl"
+	                ;;
+	esac
+
+	virtiofsd_script_dir="${repo_root_dir}/tools/packaging/static-build/virtiofsd"
+	echo "${BUILDER_REGISTRY}:virtiofsd-$(get_from_kata_deps "externals.virtiofsd.toolchain")-${libc}-$(get_last_modification ${virtiofsd_script_dir})-$(uname -m)"
+}

tools/packaging/static-build/cache_components_main.sh

@@ -74,6 +74,13 @@ cache_shim_v2_artifacts() {
 	create_cache_asset "${shim_v2_tarball_name}" "${current_shim_v2_version}" "${current_shim_v2_image}"
 }
 
+cache_virtiofsd_artifacts() {
+	local virtiofsd_tarball_name="kata-static-virtiofsd.tar.xz"
+	local current_virtiofsd_version="$(get_from_kata_deps "externals.virtiofsd.version")-$(get_from_kata_deps "externals.virtiofsd.toolchain")"
+	local current_virtiofsd_image="$(get_virtiofsd_image_name)"
+	create_cache_asset "${virtiofsd_tarball_name}" "${current_virtiofsd_version}" "${current_virtiofsd_image}"
+}
+
 create_cache_asset() {
 	local component_name="${1}"
 	local component_version="${2}"
@@ -106,6 +113,7 @@ Usage: $0 "[options]"
 			* Export ROOTFS_IMAGE_TYPE="image|initrd" for one of those two types
 			  The default ROOTFS_IMAGE_TYPE value is "image"
 		-s	Shim v2 cache
+		-v	VirtioFS cache
 		-h	Shows help
 EOF
 )"
@@ -119,8 +127,9 @@ main() {
 	local qemu_component="${qemu_component:-}"
 	local rootfs_component="${rootfs_component:-}"
 	local shim_v2_component="${shim_v2_component:-}"
+	local virtiofsd_component="${virtiofsd_component:-}"
 	local OPTIND
-	while getopts ":cFknqrsh:" opt
+	while getopts ":cFknqrsvh:" opt
 	do
 		case "$opt" in
 		c)
@@ -144,6 +153,9 @@ main() {
 		s)
 			shim_v2_component="1"
 			;;
+		v)
+			virtiofsd_component="1"
+			;;
 		h)
 			help
 			exit 0;
@@ -164,6 +176,7 @@ main() {
 	[[ -z "${qemu_component}" ]] && \
 	[[ -z "${rootfs_component}" ]] && \
 	[[ -z "${shim_v2_component}" ]] && \
+	[[ -z "${virtiofsd_component}" ]] && \
 		help && die "Must choose at least one option"
 
 	mkdir -p "${WORKSPACE}/artifacts"
@@ -177,6 +190,7 @@ main() {
 	[ "${qemu_component}" == "1" ] && cache_qemu_artifacts
 	[ "${rootfs_component}" == "1" ] && cache_rootfs_artifacts
 	[ "${shim_v2_component}" == "1" ] && cache_shim_v2_artifacts
+	[ "${virtiofsd_component}" == "1" ] && cache_virtiofsd_artifacts
 
 	ls -la "${WORKSPACE}/artifacts/"
 	popd

tools/packaging/static-build/virtiofsd/build.sh

@@ -48,7 +48,7 @@ case ${ARCH} in
 		;;
 esac
 
-container_image="${VIRTIOFSD_CONTAINER_BUILDER:-${BUILDER_REGISTRY}:virtiofsd-${virtiofsd_toolchain}-${libc}-$(get_last_modification ${script_dir})-$(uname -m)}"
+container_image="${VIRTIOFSD_CONTAINER_BUILDER:-$(get_virtiofsd_image_name)}"
 
 sudo docker pull ${container_image} || \
 	(sudo docker build \