嵌教影片部驅程式碼及應用程式程式碼：

********************************************************************

//memdev.c

static const struct file_operations mem_fops =

{

.owner = THIS_MODULE,

.llseek = mem_llseek,

.read = mem_read,

.write = mem_write,

.open = mem_open,

.release = mem_release,

};

**********************************************************************

//app-mem.c

/*打裝置檔案*/

fp0 = fopen("/dev/memdev0","r+");

/*寫入裝置*/

fwrite(Buf, sizeof(Buf), 1, fp0);

/*重新定位檔案位置（思考沒該指令何)*/

fseek(fp0,0,SEEK_SET);//呼叫mem_llseek（）定位

/*讀裝置*/

fread(Buf, sizeof(Buf), 1, fp0);

呼叫函式名與fopen,fwrite,fread,fseek與file_operation指標名open,write.read,llseek核心何知道應該呼叫哪函式