/* a module of a character device */
/* some include files*/
#include"param.h"
#include"user.h"
#include"tty.h"
#include"dir.h"
#include”fs.h"
/* the include files modules need*/
#include"Linux/kernel.h"
#include"Linux/module.h"
#if CONFIG_MODBERSIONS==1
degine MODBERSIONS
#include" Linux.modversions.h"
#endif
#difine devicename mydevice
/* the init funcion*/
int init_module()
{
int tag=module_register_chrdev(0，mydevice，&Fops);
if (tag<0)
{
printk("the device init is erro!\n");
return 1;
}
return 0;
}
/*the funcion which the device will be used */
int device_open ()
{
…….
}
int device_read ()
{
…….
}
int device_write ()
{
…….
}
int device_ioctl ()
{
…….
}
……
/* the deltter function of this module*/
int cleanup_module()
{
int re=module_unregister_chrdev(tag，mydevice);
if( re<0)
{
printk("erro unregister the module !!\n");
return 1;
}
return 0;
}
收藏
推荐
评论(0条)
