[yocto] [PATCH 2/2] sato: Throw warning when building ISO image without unionfs enabled

[Yang Shi]

[YOCTO #1487]

For the liveCD image, interactive bootup is needed, but psplash prevents from
booting interactively. In such case ISO image is not usable, so throw warning
info when building ISO image without unionfs enabled in kernel.

Signed-off-by: Yang Shi <yang.shi at windriver.com>
---
 meta/recipes-sato/images/core-image-sato.bb |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/meta/recipes-sato/images/core-image-sato.bb b/meta/recipes-sato/images/core-image-sato.bb
index 11c3318..871b227 100644
--- a/meta/recipes-sato/images/core-image-sato.bb
+++ b/meta/recipes-sato/images/core-image-sato.bb
@@ -9,3 +9,17 @@ IMAGE_FEATURES += "apps-console-core ${SATO_IMAGE_FEATURES}"
 LICENSE = "MIT"
 
 inherit core-image
+
+LIVE = "${@base_contains('IMAGE_FSTYPES', 'live', 'yes', 'no', d)}"
+
+do_check_unionfs() {
+        if [ "${NOISO}" = "1" ]; then
+                return
+        fi
+
+        if [ "${LIVE}" = "yes" ] && ! grep -q "CONFIG_UNION_FS=y" ${STAGING_KERNEL_DIR}/.config; then
+                bbwarn "Building LIVE CD without UNION FS enabled in kernel"
+        fi
+}
+
+addtask check_unionfs before do_build after do_bootimg
-- 
1.7.5.4