NtPathToDosPath

bool NtPathToDosPath(const wchar_t* ntPath, wchar_t* buffer, size_t length)
{
    wchar_t device_name[3] = L"A:";
    wchar_t target_path[128];

    for (wchar_t i = L'A'; i <= L'Z'; ++i)
    {
        device_name[0] = i;

        if (QueryDosDeviceW(device_name, target_path, 128))
        {
            size_t target_length = wcslen(target_path);

            if (!_wcsnicmp(ntPath, target_path, target_length))
            {
                wcscpy_s(buffer, length, device_name);
                wcscat_s(buffer, length, ntPath + target_length);

                return true;
            }
        }
    }

    return false;
}