[PATCH openbmc 3/9] obmc-initfs: init: check init is an executable file

[OpenBMC Patches]

From: Milton Miller <miltonm at us.ibm.com>

In init, check the new init is an executable file with non-zero
size in addition to the shell being executable with its shared
libraries.

Signed-off-by: Milton Miller <miltonm at us.ibm.com>
---
 .../common/recipes-phosphor/obmc-phosphor-initfs/files/obmc-init.sh  | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/meta-phosphor/common/recipes-phosphor/obmc-phosphor-initfs/files/obmc-init.sh b/meta-phosphor/common/recipes-phosphor/obmc-phosphor-initfs/files/obmc-init.sh
index 0dc4c35..eed8cf5 100644
--- a/meta-phosphor/common/recipes-phosphor/obmc-phosphor-initfs/files/obmc-init.sh
+++ b/meta-phosphor/common/recipes-phosphor/obmc-phosphor-initfs/files/obmc-init.sh
@@ -69,9 +69,10 @@ mkdir -p $work
 
 mount -t overlay -o lowerdir=$rodir,upperdir=$upper,workdir=$work cow /root
 
-if ! chroot /root /bin/sh -c exit
+if ! chroot /root /bin/sh -c "test -x /sbin/init -a -s /sbin/init"
 then
-	echo 'chroot test failed; invoking emergency shell.'
+	echo "Unable to confirm /sbin/init is an executable non-empty file."
+	echo "Change Root test failed!  Invoking emergency shell."
 	PS1=rescue#\  sulogin
 fi
 
-- 
2.6.4