#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/cdev.h>
static dev_t hello_dev;
struct cdev hello_cdev;
static char buffer[64];
struct file_operations hello_fops = {
.owner = THIS_MODULE,
};
static int __init hello_module_init(void)
{
printk(KERN_INFO "Loading HelloWorld_module.\n");
alloc_chrdev_region(&hello_dev, 0, 1, "hello_dev");
printk(KERN_INFO "%s\n", format_dev_t(buffer, hello_dev));
cdev_init(&hello_cdev, &hello_fops);
hello_cdev.owner = THIS_MODULE;
cdev_add(&hello_cdev, hello_dev, 1);
return 0;
}
static void __exit hello_module_cleanup(void)
{
printk(KERN_INFO "Cleaning-up hello_dev.\n");
cdev_del(&hello_cdev);
unregister_chrdev_region(hello_dev, 1);
}
module_init(hello_module_init);
module_exit(hello_module_cleanup);
MODULE_AUTHOR("Your Name");
MODULE_LICENSE("GPL");
This page: |
Created: | Fri Jun 16 10:29:18 2023 |
|
From: |
17383.tmp/hello.c |