summaryrefslogtreecommitdiffstats
path: root/daemon/ffimodule.h
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--daemon/ffimodule.h36
1 files changed, 36 insertions, 0 deletions
diff --git a/daemon/ffimodule.h b/daemon/ffimodule.h
new file mode 100644
index 0000000..beb1bf1
--- /dev/null
+++ b/daemon/ffimodule.h
@@ -0,0 +1,36 @@
+/* Copyright (C) CZ.NIC, z.s.p.o. <knot-resolver@labs.nic.cz>
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#pragma once
+
+#include "lib/defines.h"
+#include "lib/layer.h"
+#include <lua.h>
+struct engine;
+struct kr_module;
+
+/**
+ * Register Lua module as a FFI module.
+ * This fabricates a standard module interface,
+ * that trampolines to the Lua module methods.
+ *
+ * @note Lua module is loaded in it's own coroutine,
+ * so it's possible to yield and resume at arbitrary
+ * places except deinit()
+ *
+ * @param engine daemon engine
+ * @param module prepared module
+ * @param name module name
+ * @return 0 or an error
+ */
+int ffimodule_register_lua(struct engine *engine, struct kr_module *module, const char *name);
+
+int ffimodule_init(lua_State *L);
+void ffimodule_deinit(lua_State *L);
+
+/** Static storage for faster passing of layer function parameters to lua callbacks.
+ *
+ * We don't need to declare it in a header, but let's give it visibility. */
+KR_EXPORT extern kr_layer_t kr_layer_t_static;
+