daemon: added config syntax sugar for ‘modules’

example:
modules.hints = ‘{“input”:”/etc/hosts”}’
.. is equal to ..
modules.load(‘hints’)
hints.config(‘{“input”:”/etc/hosts”}’)

daemon/daemon.mk

@@ -8,7 +8,7 @@ kresolved_SOURCES := \
 	daemon/main.c
 
 # Embed resources
-daemon/engine.o: daemon/lua/init.inc
+daemon/engine.o: daemon/lua/init.inc daemon/lua/config.inc
 %.inc: %.lua
 	@$(call quiet,XXD,$<) -i < $< > $@
 	@echo ', 0x00' >> $@

daemon/lua/config.lua

+-- Default configuration
+cache.open('.', 10485760)

daemon/lua/init.lua

--- Default configuration
-cache.open('.', 10485760)
+-- Syntactic sugar for module loading
+-- `modules.<name> = <config>`
+local modules_mt = {
+	__newindex = function (t,k,v)
+		modules.load(k)
+		_G[k]['config'](v)
+	end
+}
+setmetatable(modules, modules_mt)
\ No newline at end of file

lib/module.h

@@ -36,18 +36,23 @@ struct kr_prop;
 typedef uint32_t (module_api_cb)(void);
 typedef int (module_init_cb)(struct kr_module *);
 typedef int (module_deinit_cb)(struct kr_module *);
-typedef int (module_config_cb)(struct kr_module *, void *);
+typedef int (module_config_cb)(struct kr_module *, const char *);
 typedef const knot_layer_api_t* (module_layer_cb)(void);
 typedef struct kr_prop *(module_prop_cb)(void);
 
 #define KR_MODULE_API ((uint32_t) 0x20150401)
 
+/**
+ * Property callback.
+ */
+typedef char *(kr_prop_cb)(void *, struct kr_module *, const char *);
+
 /**
  * Module property (named callable).
  * A module property has a free-form JSON output (and optional input).
  */
 struct kr_prop {
-    char *(*cb)(void *, struct kr_module *, const char *);
+    kr_prop_cb *cb;
     const char *name;
     const char *info;
 };