test.c

在Linux下实现文件的拷贝

#include <stdio.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>

#define DEVICE_NAME zjdev
#define OPENSPK 1
#define CLOSESPK 2
char buf[128];
int main()
{
 int f=open(DEVICE_NAME,O_RDONLY);
 if(f==-1)
   return 1;
 printf("\nHit enter key to read device...");
 read(f,buf,128);
 printf(buf);
 printf("\nHit entr key to write device...");
 write(f,"test",4);
 close(f);
 }