aa.cpp

来自「从dos下装载内核」· C++ 代码 · 共 33 行

// aa.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include <windows.h>
char buffer[100];
int _tmain(int argc, _TCHAR* argv[])
{
	DWORD i=0;
	HANDLE file,file1;
	file=CreateFile(".\\image",FILE_READ_DATA,FILE_SHARE_READ,NULL,OPEN_EXISTING,0,NULL);
	file1=CreateFile(".\\system.img",FILE_ALL_ACCESS,0,NULL,CREATE_ALWAYS,0,NULL);
	OVERLAPPED ol;
	memset(&ol,0,sizeof(ol));
	ol.Offset=0xa00;
	ReadFile(file,buffer,100,&i,&ol);
	WriteFile(file1,buffer,100,&i,NULL);
	while(1){
		ReadFile(file,buffer,100,&i,NULL);
		if(i<100){
			WriteFile(file1,buffer,i,&i,NULL);
			break;
		}else{
			WriteFile(file1,buffer,100,&i,NULL);
		}					
		
	}
	CloseHandle(file);
	CloseHandle(file1);
	return 0;
}