+ trigger->creds = *creds;
+}
+
+enum lttng_trigger_status lttng_trigger_set_owner_uid(
+ struct lttng_trigger *trigger, uid_t uid)
+{
+ enum lttng_trigger_status ret = LTTNG_TRIGGER_STATUS_OK;
+ const struct lttng_credentials creds = {
+ .uid = LTTNG_OPTIONAL_INIT_VALUE(uid),
+ .gid = LTTNG_OPTIONAL_INIT_UNSET,
+ };
+
+ if (!trigger) {
+ ret = LTTNG_TRIGGER_STATUS_INVALID;
+ goto end;
+ }
+
+ /* Client-side validation only to report a clearer error. */
+ if (geteuid() != 0) {
+ ret = LTTNG_TRIGGER_STATUS_PERMISSION_DENIED;
+ goto end;
+ }
+
+ lttng_trigger_set_credentials(trigger, &creds);
+
+end:
+ return ret;
+}
+
+enum lttng_trigger_status lttng_trigger_get_owner_uid(
+ const struct lttng_trigger *trigger, uid_t *uid)
+{
+ enum lttng_trigger_status ret = LTTNG_TRIGGER_STATUS_OK;
+ const struct lttng_credentials *creds = NULL;
+
+ if (!trigger || !uid ) {
+ ret = LTTNG_TRIGGER_STATUS_INVALID;
+ goto end;
+ }
+
+ if (!trigger->creds.uid.is_set ) {
+ ret = LTTNG_TRIGGER_STATUS_UNSET;
+ goto end;
+ }
+
+ creds = lttng_trigger_get_credentials(trigger);
+ *uid = lttng_credentials_get_uid(creds);
+
+end:
+ return ret;