+/*
+ * A given trigger needs a tracer notifier if
+ * it has an event-rule condition,
+ * AND
+ * it has one or more sessiond-execution action.
+ */
+LTTNG_HIDDEN
+bool lttng_trigger_needs_tracer_notifier(const struct lttng_trigger *trigger);
+
+LTTNG_HIDDEN
+void lttng_trigger_set_as_registered(struct lttng_trigger *trigger);
+
+LTTNG_HIDDEN
+void lttng_trigger_set_as_unregistered(struct lttng_trigger *trigger);
+
+/*
+ * The trigger must be locked before calling lttng_trigger_is_registered.
+ *
+ * The lock is necessary since a trigger can be unregistered at any time.
+ *
+ * Manipulations requiring that the trigger be registered must always acquire
+ * the trigger lock for the duration of the manipulation using
+ * `lttng_trigger_lock` and `lttng_trigger_unlock`.
+ */
+LTTNG_HIDDEN
+bool lttng_trigger_is_registered(struct lttng_trigger *trigger);
+
+LTTNG_HIDDEN
+void lttng_trigger_lock(struct lttng_trigger *trigger);
+
+LTTNG_HIDDEN
+void lttng_trigger_unlock(struct lttng_trigger *trigger);
+
+LTTNG_HIDDEN
+enum lttng_trigger_status lttng_trigger_add_error_results(
+ const struct lttng_trigger *trigger,
+ struct lttng_error_query_results *results);
+
+LTTNG_HIDDEN
+enum lttng_trigger_status lttng_trigger_add_action_error_query_results(
+ struct lttng_trigger *trigger,
+ struct lttng_error_query_results *results);
+
+/*
+ * Set the trigger name.
+ *
+ * A name is optional.
+ * A name will be assigned on trigger registration if no name is set.
+ *
+ * The name is copied.
+ *
+ * Return LTTNG_TRIGGER_STATUS_OK on success, LTTNG_TRIGGER_STATUS_INVALID
+ * if invalid parameters are passed.
+ */
+LTTNG_HIDDEN
+enum lttng_trigger_status lttng_trigger_set_name(
+ struct lttng_trigger *trigger, const char *name);
+