lttng-ctl: add capture descriptor feature to event rule condition API

[lttng-tools.git] / include / lttng / trigger / trigger.h

diff --git a/include/lttng/trigger/trigger.h b/include/lttng/trigger/trigger.h
index a0c312ddd1e92e2efdb94c6affcbb942696198ff..de4e93d70705bbb9787eb4e2a2e3faa54d152f18 100644 (file)
--- a/include/lttng/trigger/trigger.h
+++ b/include/lttng/trigger/trigger.h
@@ -52,6 +52,9 @@ enum lttng_trigger_firing_policy {
  * The caller retains the ownership of both the condition and action
  * and both must be kept alive for the lifetime of the trigger object.
  *
+ * If the action is a notification action with capture descriptors,
+ * the condition must be an event rule condition.
+ *
  * A trigger must be registered in order to become activate and can
  * be destroyed after its registration.
  *
@@ -94,6 +97,9 @@ extern enum lttng_trigger_status lttng_trigger_get_owner_uid(
 extern struct lttng_condition *lttng_trigger_get_condition(
                struct lttng_trigger *trigger);
 
+const struct lttng_condition *lttng_trigger_get_const_condition(
+               const struct lttng_trigger *trigger);
+
 /*
  * Get the action of a trigger.
  *
@@ -104,6 +110,8 @@ extern struct lttng_condition *lttng_trigger_get_condition(
 extern struct lttng_action *lttng_trigger_get_action(
                struct lttng_trigger *trigger);
 
+const struct lttng_action *lttng_trigger_get_const_action(
+               const struct lttng_trigger *trigger);
 
 /*
  * Get the name of a trigger.
@@ -185,7 +193,20 @@ extern int lttng_register_trigger(struct lttng_trigger *trigger);
  *
  * Return 0 on success, a negative LTTng error code on error.
  */
-extern int lttng_unregister_trigger(struct lttng_trigger *trigger);
+extern int lttng_unregister_trigger(const struct lttng_trigger *trigger);
+
+/*
+ * List triggers for the current user.
+ *
+ * On success, a newly-allocated trigger set is returned.
+ *
+ * The trigger set must be destroyed by the caller (see
+ * lttng_triggers_destroy()).
+ *
+ * Returns LTTNG_OK on success, else a suitable LTTng error code.
+ */
+extern enum lttng_error_code lttng_list_triggers(
+               struct lttng_triggers **triggers);
 
 /*
  * Get a trigger from the set at a given index.