请问这样在2000下获得进程名怎么不行的呀（附代码）？

INT GetProcessFileName(char* buf)
{    
DWORD dwAddress = (DWORD)PsGetCurrentProcess();
if(dwAddress == 0 || dwAddress == 0xFFFFFFFF)
return 1;
dwAddress += 0x1B0;
if((dwAddress = *(DWORD*)dwAddress) == 0) return 1;
dwAddress += 0x10;
if((dwAddress = *(DWORD*)dwAddress) == 0) return 1;
dwAddress += 0x3C;
if((dwAddress = *(DWORD*)dwAddress) == 0) return 1;
KdPrint(("Current Process Full Path Name: %ws\n", (char *)dwAddress));
 
strcpy(buf,(char *)dwAddress);

return 0;
}
我这样在2000下调用是总是过一会就死机的不知道为什