only add the nandupgrade method when /sbin/upgraded exists

Signed-off-by: John Crispin <blogic@openwrt.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/system.c b/system.c
index 2110035..29ca656 100644
--- a/system.c
+++ b/system.c
@@ -342,6 +342,8 @@ static const struct ubus_method system_methods[] = {
 	UBUS_METHOD_NOARG("upgrade", system_upgrade),
 	UBUS_METHOD("watchdog", watchdog_set, watchdog_policy),
 	UBUS_METHOD("signal", proc_signal, signal_policy),
+
+	/* must remain at the end as it ia not always loaded */
 	UBUS_METHOD("nandupgrade", nand_set, nand_policy),
 };
 
@@ -371,8 +373,12 @@ procd_bcast_event(char *event, struct blob_attr *msg)
 
 void ubus_init_system(struct ubus_context *ctx)
 {
+	struct stat s;
 	int ret;
 
+	if (stat("/sbin/upgraded", &s))
+		system_object.n_methods -= 1;
+
 	_ctx = ctx;
 	ret = ubus_add_object(ctx, &system_object);
 	if (ret)