win2.c

来自「内含纯DOS,WIN32控制台和WIN32 GUI三个版本.它们生成的备份文件可」· C语言 代码 · 共 64 行

#include <stdio.h>
#include <windows.h>

int readWriteDrive(unsigned int cmd, 
				   int devicePar, 
				   unsigned long startSectorPar, 
				   DWORD sectorToDo,
				   BYTE* buf)
{
DWORD deviceGeneric,open;
	
	__int64 startSector=0;
__int64 startbPos;
DWORD sectorHigh;

HANDLE hDev=0;


DWORD bDone;
char device[32];

char startSectorPar2[64];
memset(device,0,32);
/*device.Format("%d",devicePar);*/
strcpy(device,"\\\\.\\PHYSICALDRIVE");
sprintf(device+strlen(device),"%d",devicePar);
memset(startSectorPar2,0,64);

sprintf(startSectorPar2,"%lu",startSectorPar);

startSector=_atoi64(startSectorPar2);
startbPos=startSector*512;
sectorHigh=startbPos>>32;
if(cmd==0x42)
{
deviceGeneric=GENERIC_READ;

open=CREATE_ALWAYS;

}

else if(cmd==0x43)
{
deviceGeneric=GENERIC_WRITE;

open=OPEN_EXISTING;

}

hDev=CreateFile(device,deviceGeneric,FILE_SHARE_WRITE,0,OPEN_EXISTING,0,0);
if(hDev==INVALID_HANDLE_VALUE)
{printf("打开硬盘失败。"); return 0;}


	

SetFilePointer(hDev,startbPos,(LONG *)&sectorHigh,FILE_BEGIN);
	
if(cmd==0x42) ReadFile(hDev,buf,sectorToDo*512,&bDone,0);
else if(cmd==0x43) WriteFile(hDev,buf,sectorToDo*512,&bDone,0);
return 0;

}