#include <linux/kernel.h>
#include <linux/printk.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/stat.h>

static char *your_name = "Taro";
module_param(your_name, charp, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);

static int return_value = 0;
module_param(return_value, int, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);

/*
 * Tutorial hello world module init.
 * @return int == 0: Success. 
 *             < 0:  Fail, negative errno number.
 */
static int __init hello_world_init(void)
{	printk(KERN_INFO "%s: Hello %s san. return_value=%d\n", __func__, your_name, return_value);
	return return_value;
}

/*
 * Tutorial hello world module exit.
 * @return void
 */
static void __exit hello_world_exit(void)
{	printk(KERN_INFO "%s: Goodbye %s san.\n", __func__, your_name);
}

module_init(hello_world_init);
module_exit(hello_world_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Tutorial hello you.");
MODULE_AUTHOR("Your name or email address.");