Move creation of /data etc. from optee_client.mk to S30optee

For some reason Raspberry Pi 3 with NFS root doesn't allow
tee-supplicant to create a working folder for user 'tee' under the /data
folder. We have found a workaround which is to create the /data
hierarchy and set its permissions in S30optee rather than in the root fs
definition in optee_client.mk.

Fixes: https://github.com/OP-TEE/optee_os/issues/2773



Signed-off-by: Joakim Bech <joakim.bech@linaro.org>
Tested-by: Joakim Bech <joakim.bech@linaro.org> (RPi3, RPi3+NFS)
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>

br-ext/package/optee_client/S30optee

@@ -19,6 +19,10 @@ case "$1" in
 			chown root:ion /dev/ion && chmod 0660 /dev/ion
 			[ $? = 0 ] && echo "OK" || echo "FAIL"
 		fi
+		printf "Create and set permissions on /data... "
+		mkdir -p /data/tee && chown -R tee:tee /data/tee && \
+			chmod 0770 /data/tee
+		[ $? = 0 ] && echo "OK" || echo "FAIL"
 		printf "Starting tee-supplicant... "
 		su tee -c '/usr/sbin/tee-supplicant -d'
 		[ $? = 0 ] && echo "OK" || echo "FAIL"

br-ext/package/optee_client/optee_client.mk

@@ -28,9 +28,4 @@ define OPTEE_CLIENT_USERS
 	test -1 test -1 - - /bin/sh teeclnt,ion Test user, may run TEE client applications
 endef
 
-define OPTEE_CLIENT_PERMISSIONS
-	/data d 755 root root - - - - -
-	/data/tee d 770 tee tee - - - - -
-endef
-
 $(eval $(cmake-package))