/* * import.c -- a module using a symbol from export.c * * Copyright (C) 2001 Alessandro Rubini and Jonathan Corbet * Copyright (C) 2001 O'Reilly & Associates * * The source code in this file can be freely used, adapted, * and redistributed in source or binary form, so long as an * acknowledgment appears in derived source files.  The citation * should list that the code comes from the book "Linux Device * Drivers" by Alessandro Rubini and Jonathan Corbet, published * by O'Reilly & Associates.   No warranty is attached; * we cannot take responsibility for errors or fitness for use. * */#ifndef __KERNEL__#  define __KERNEL__#endif#ifndef MODULE#  define MODULE#endif/* * Use versioning if needed */#include <linux/config.h> /* retrieve the CONFIG_* macros */#ifdef CONFIG_MODVERSIONS#   undef MODVERSIONS /* it might be defined */#   define MODVERSIONS#endif#ifdef MODVERSIONS#  include <linux/modversions.h>#  include "export.ver"#endif#include <linux/module.h>#include <linux/kernel.h>#include "sysdep.h"extern int export_function(int, int);int import_init(void){    int i = export_function(2,2);    printk("import: my mate tells that 2+2 = %i\n",i);    return 0;}void import_cleanup(void){}module_init(import_init);module_exit(import_cleanup);