new flag to stop ENGINE methods being registered

crypto/engine/eng_fat.c

@@ -176,6 +176,7 @@ int ENGINE_register_all_complete(void)
 	ENGINE *e;
 
 	for(e=ENGINE_get_first() ; e ; e=ENGINE_get_next(e))
-		ENGINE_register_complete(e);
+		if (!(e->flags & ENGINE_FLAGS_NO_REGISTER_ALL))
+			ENGINE_register_complete(e);
 	return 1;
 	}

crypto/engine/engine.h

@@ -141,6 +141,13 @@ extern "C" {
  * the existing ENGINE's structural reference count. */
 #define ENGINE_FLAGS_BY_ID_COPY		(int)0x0004
 
+/* This flag if for an ENGINE that does not want its methods registered as 
+ * part of ENGINE_register_all_complete() for example if the methods are
+ * not usable as default methods.
+ */
+
+#define ENGINE_FLAGS_NO_REGISTER_ALL	(int)0x0008
+
 /* ENGINEs can support their own command types, and these flags are used in
  * ENGINE_CTRL_GET_CMD_FLAGS to indicate to the caller what kind of input each
  * command expects. Currently only numeric and string input is supported. If a

engines/e_capi.c

@@ -527,6 +527,7 @@ static int bind_capi(ENGINE *e)
 	{
 	if (!ENGINE_set_id(e, engine_capi_id)
 		|| !ENGINE_set_name(e, engine_capi_name)
+		|| !ENGINE_set_flags(e, ENGINE_FLAGS_NO_REGISTER_ALL)
 		|| !ENGINE_set_init_function(e, capi_init)
 		|| !ENGINE_set_finish_function(e, capi_finish)
 		|| !ENGINE_set_destroy_function(e, capi_destroy)