miscdevice驱动程序

#include
#include
#include
#include
 
static ssize_t read(struct file *file, char __user *user,
      size_t size, loff_t *o)
{
return 0;
}
 
static ssize_t write(struct file *file, const char __user *in,
       size_t size, loff_t *off)
{
return 0;
}
 
static struct file_operations mymisc_fops = {
.owner  = THIS_MODULE,
.write  = write,
.read  = read,
};
 
static struct miscdevice mymisc_dev = {
.minor = MISC_DYNAMIC_MINOR,
.name = "mymisc",
.fops = &mymisc_fops,
};
 
int __init mymisc_device_init(void)
{
return misc_register(&mymisc_dev);
}
 
void __exit mymisc_device_remove(void)
{
misc_deregister(&mymisc_dev);
}
 
module_init(mymisc_device_init);
module_exit(mymisc_device_remove);
 
MODULE_LICENSE("Dual BSD/GPL");