Linux操作系统内核和设备文件对话2

ex chardev.c 







/* chardev.c 



* 



* Create an input/output character device 



*/ 











/* Copyright (C) 1998-99 by Ori Pomerantz */ 















/* The necessary header files */ 







/* Standard in kernel modules */ 



#include /* Were doing kernel work */ 



#include /* Specifically, a module */ 







/* Deal with CONFIG_MODVERSIONS */ 



#if CONFIG_MODVERSIONS==1 



#define MODVERSIONS 



#include 



#endif 







/* For character devices */ 







/* The character device definitions are here */ 



#include 







/* A wrapper which does next to nothing at 



* at present, but may help for compatibility 



* with future versions of Linux */ 



#include 











/* Our own ioctl numbers */ 
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