00 NTSTATUS NewNtLoadDriver(IN PUNICODE_STRING DriverServiceName)
01 {
02   NTSTATUS status=STATUS_SUCCESS;
03
04   if (KeGetPreviousMode()!=KernelMode)
05   {
06     WCHAR *buffer=NULL;
07
08     __try
09     {
10       ProbeForRead(DriverServiceName,sizeof(UNICODE_STRING),1);
11
12       SIZE_T name_len=DriverServiceName->Length/sizeof(WCHAR);
13       ProbeForRead(DriverServiceName->Buffer,name_len*sizeof(WCHAR),2);
14
15       SIZET_T buf_len=(name_len+1)*sizeof(WCHAR);
16       buffer=(WCHAR*)ExAllocatePoolWithTag(NonPagedPool,buf_len,POOL_TAG);
17       if (buffer)
18       {
19         RtlZeroMemory(buffer,buf_len);
20         RtlCopyMemory(buffer,DriverServiceName->buffer,name_len*sizeof(WCHAR));
21
22         WCHAR *drv_name=wcsrchr(buffer,L“\\“);
23         if (drv_name) drv_name++;
24         else drv_name=buffer;
25
26         SIZE_T drv_len=wcslen(drv_name);
27
28         PWSTR pattern=L“Ovladac“;
29         SIZE_T pat_len=wcslen(pattern);
30
31         if (pat_len==drv_len)
32         {
33           UNICODE_STRING pattern_name;
34           RtlInitUnicodeString(&pattern_name,pattern);
35
36           UNICODE_STRING driver_name;
37           RtlInitUnicodeString(&driver_name,drv_name);
38
39           if (RtlCompareUnicodeString(&pattern_name,&driver_name,TRUE)==0)
40             status=STATUS_ACCESS_DENIED;
41         }
42       } else status=STATUS_INSUFFICIENT_RESOURCES;
43     } __except (EXCEPTION_EXECUTE_HANDLER)
44     {
45       status=STATUS_INVALID_PARAMETER;
46     }
47
48     if (buffer)
49       ExFreePoolWithTag(buffer);
50
51     if (!NT_SUCCESS(status))
52       return status;
53   }
54
55   status=OldNtLoadDriver(DriverServiceName);
56
57   return status;
58 }