Distinguish UST return codes from transport return codes

[lttng-ust.git] / include / lttng / ust-ctl.h

diff --git a/include/lttng/ust-ctl.h b/include/lttng/ust-ctl.h
index 10602ee73c4d3cf66433549b213c6c03ca6f2531..c2b255cd6cb6032cc113799754dc2a0b6f1085e7 100644 (file)
--- a/include/lttng/ust-ctl.h
+++ b/include/lttng/ust-ctl.h
@@ -21,6 +21,11 @@
 
 #include <lttng/ust-abi.h>
 
+/*
+ * Error values: all the following functions return:
+ * >= 0: Sucess (LTTNG_UST_OK)
+ * < 0: error code.
+ */
 int ustctl_register_done(int sock);
 int ustctl_create_session(int sock);
 int ustctl_open_metadata(int sock, int session_handle,
@@ -37,6 +42,8 @@ int ustctl_create_event(int sock, struct lttng_ust_event *ev,
 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_set_filter(int sock, struct lttng_ust_filter_bytecode *bytecode,
+               struct lttng_ust_object_data *obj_data);
 
 int ustctl_enable(int sock, struct lttng_ust_object_data *object);
 int ustctl_disable(int sock, struct lttng_ust_object_data *object);
@@ -50,11 +57,26 @@ int ustctl_stop_session(int sock, int handle);
 int ustctl_tracepoint_list(int sock);
 /*
  * ustctl_tracepoint_list_get is used to iterate on the tp list
- * handle. End is iteration is reached when -ENOENT is returned.
+ * handle. End is iteration is reached when -LTTNG_UST_ERR_NOENT is
+ * returned.
  */
 int ustctl_tracepoint_list_get(int sock, int tp_list_handle,
                struct lttng_ust_tracepoint_iter *iter);
 
+/*
+ * ustctl_tracepoint_field_list returns a tracepoint field list handle,
+ * or negative error value.
+ */
+int ustctl_tracepoint_field_list(int sock);
+
+/*
+ * ustctl_tracepoint_field_list_get is used to iterate on the tp field
+ * list handle. End is iteration is reached when -LTTNG_UST_ERR_NOENT is
+ * returned.
+ */
+int ustctl_tracepoint_field_list_get(int sock, int tp_field_list_handle,
+               struct lttng_ust_field_iter *iter);
+
 int ustctl_tracer_version(int sock, struct lttng_ust_tracer_version *v);
 int ustctl_wait_quiescent(int sock);