X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=include%2Flttng%2Fust-tracepoint-event.h;h=d12e8bb71779dbff8ee1dd7196f52126c4465ba9;hb=0b5389bbeb5da342a12a195d34ea8c6d0db55a04;hp=8140b9df78c32425e0ea97f6185a4844bda9cfc7;hpb=edef8b5fa8703886471390be50a5c06584f02c59;p=lttng-ust.git

diff --git a/include/lttng/ust-tracepoint-event.h b/include/lttng/ust-tracepoint-event.h
index 8140b9df..d12e8bb7 100644
--- a/include/lttng/ust-tracepoint-event.h
+++ b/include/lttng/ust-tracepoint-event.h
@@ -520,10 +520,24 @@ size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args))      \
 	__chan->ops->event_write(&__ctx, _src,				\
 		sizeof(_type) * __get_dynamic_len(dest));
 
+/*
+ * __chan->ops->u.has_strcpy is a flag letting us know if the LTTng-UST
+ * tracepoint provider ABI implements event_strcpy. This dynamic check
+ * can be removed when the tracepoint provider ABI moves to 2.
+ */
+#if (LTTNG_UST_PROVIDER_MAJOR > 1)
+#error "Tracepoint probe provider major version has changed. Please remove dynamic check for has_strcpy."
+#endif
+
 #undef _ctf_string
 #define _ctf_string(_item, _src, _nowrite)			        \
 	lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src)));	\
-	__chan->ops->event_write(&__ctx, _src, __get_dynamic_len(dest));
+	if (__chan->ops->u.has_strcpy)					\
+		__chan->ops->event_strcpy(&__ctx, _src,			\
+			__get_dynamic_len(dest));			\
+	else								\
+		__chan->ops->event_write(&__ctx, _src,			\
+			__get_dynamic_len(dest));
 
 /* Beware: this get len actually consumes the len value */
 #undef __get_dynamic_len