int ustctl_add_context(int sock, struct lttng_ust_context *ctx,
struct lttng_ust_object_data *obj_data,
struct lttng_ust_object_data **context_data);
int ustctl_add_context(int sock, struct lttng_ust_context *ctx,
struct lttng_ust_object_data *obj_data,
struct lttng_ust_object_data **context_data);