Added the module_dependency structure.

A module can now define modules it depends on, and they will be automatically
loaded before B_MODULE_INIT is called.
This information will also be evaluated by the boot loader, so that it can
load all needed modules without further hacks.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7316 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/os/drivers/module.h

@@ -10,10 +10,9 @@
 #include <OS.h>
 
 
-/* module info structure
+/* Every module exports a list of module_info structures.
- * Every module exports it - modules are identified
+ * It defines the interface of the module and the name
- * by the name given in this structure.
+ * that is used to access the interface.
- * It exports the functions that the module support.
  */
 
 typedef struct module_info {
@@ -30,6 +29,17 @@ typedef struct module_info {
 #define	B_KEEP_LOADED	0x00000001
 
 
+/* Use the module_dependency structure to let the
+ * kernel automatically load modules yet depend on
+ * before B_MODULE_INIT is called.
+ */
+
+typedef struct module_dependency {
+	const char	*name;
+	module_info	**info;
+} module_dependency;
+
+
 #ifdef __cplusplus
 extern "C" {
 #endif