[PATCH 1/1] rootfs-postcommands.bbclass: Print a warning when login with root is disabled

["Robert Yang" <liezhi.yang@windriver.com>]

Fixed:
EXTRA_IMAGE_FEATURES_remove = "debug-tweaks"
$ bitbake core-image-minimal

Then we can't login to the system with root without any messages. Add a warning
makes it easy to debug.

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
---
 meta/classes/rootfs-postcommands.bbclass | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/meta/classes/rootfs-postcommands.bbclass b/meta/classes/rootfs-postcommands.bbclass
index 1f27a3d07a..e4fe416ac9 100644
--- a/meta/classes/rootfs-postcommands.bbclass
+++ b/meta/classes/rootfs-postcommands.bbclass
@@ -147,7 +147,11 @@ read_only_rootfs_hook () {
 zap_empty_root_password () {
 	if [ -e ${IMAGE_ROOTFS}/etc/shadow ]; then
 		sed -i 's%^root::%root:*:%' ${IMAGE_ROOTFS}/etc/shadow
-        fi
+		grep -q '^root:*:' ${IMAGE_ROOTFS}/etc/shadow
+		if [ $? -eq 0 ]; then
+			bbwarn "Login with root user is disabled since zap_empty_root_password is enabled"
+		fi
+	fi
 	if [ -e ${IMAGE_ROOTFS}/etc/passwd ]; then
 		sed -i 's%^root::%root:*:%' ${IMAGE_ROOTFS}/etc/passwd
 	fi
-- 
2.17.1