First we define our user-callable functions in the function_entry table: Since we are going to be using a resource, make sure we have it declared as a static and then we define a destructor function. It is pretty simple, it just calls the libstocks free_stocks() function on the top pointer in the linked list. top); }]]> Now in our MINIT function we register the destructor by attaching it to the le_stocks resource: We have nothing special to do in any of the shutdown functions, so the next step is to write our actual get_quotes() function.