void **user_payload_buf, void **user_cmd_header_buf,
size_t *user_cmd_header_len);
+/*
+ * Sends the lttcomm message to the session daemon and fills the reply payload.
+ *
+ * Return the size of the received data on success or else a negative lttng
+ * error code.
+ */
+LTTNG_HIDDEN
+int lttng_ctl_ask_sessiond_payload(struct lttng_payload_view *message,
+ struct lttng_payload *reply);
+
/*
* Calls lttng_ctl_ask_sessiond_fds_varlen() with no expected command header.
*/