/*
* head file of hello.ko
* location of following files : /usr/src/$(uname -r)/include/
*/
#include<linux/init.h> //module_init(),module_exit()
#include<linux/module.h> //MODULE_AUTHOR(),MODULE_LICENSE()
#include<linux/kernel.h> //KERN_EMERG
hello.c
/*
* source file of hello.ko
* location: /usr/src/$(uname -r)/driver/net/hello/
*/
#include "hello.h" //find head file in current dir
/*
* hello_init : initial function, called when module is installed
* return 0 if succeeded
*/
static int hello_init(void)
{
printk(KERN_EMERG"hello.ko is installed!\n");
return 0;
}
/*
* hello_exit : called when module is uninstalled
*/
static void hello_exit(void)
{
printk(KERN_EMERG"hello.ko is uninstalled!\n");
}
module_init(hello_init);
module_exit(hello_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("zhangsk");
Makefile
obj-m := hello.o
all:
make -C /lib/modules/$(shell uname -r)/build SUBDIRS=$(PWD) modules
clean:
make -C /lib/modules/$(shell uname -r)/build SUBDIRS=$(PWD) clean
然后在当前文目录中输入： insmod hello.ko
OK, 可以看到屏幕中输出： hello.ko is installed!