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ÔÚ²»ÓÃÕâ¸öÉ豸ʱ,¿ÉÒÔ½«ËûÐ¶ÔØ.Ö÷ÒªÊÇ´Ó/proc ÖÐÈ¡ÏûÕâ¸öÉ豸µÄÌØÊâÎļþ.¿ÉÓÃÌØ¶¨µÄº¯ÊýʵÏÖ.
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/* 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
define 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_chrde


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#include <stdio.h>
#include <stdlib.h>
int main(int argc, char **argv)
{
printf(”Hello world!\n”);
exit(0);
}
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# gcc -o hello hello.c
# ./hello
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