Function MyCreateFileMapping

src/pakpatch.cc:300–335

}

HANDLE WINAPI MyCreateFileMapping(_In_ HANDLE hFile,
                                  _In_opt_ LPSECURITY_ATTRIBUTES lpAttributes,
                                  _In_ DWORD flProtect,
                                  _In_ DWORD dwMaximumSizeHigh,
                                  _In_ DWORD dwMaximumSizeLow,
                                  _In_opt_ LPCTSTR lpName) {
  if (IsResourcesPak(hFile)) {
    // Force copy-on-write so the mapped view can be patched in memory.
    resources_pak_map =
        RawCreateFileMapping(hFile, lpAttributes, PAGE_WRITECOPY,
                             dwMaximumSizeHigh, dwMaximumSizeLow, lpName);

    // No more hook needed.
    DetourTransactionBegin();
    DetourUpdateThread(GetCurrentThread());
    DetourDetach(reinterpret_cast<LPVOID*>(&RawCreateFileMapping),
                 reinterpret_cast<void*>(MyCreateFileMapping));
    auto status = DetourTransactionCommit();
    if (status != NO_ERROR) {
      DebugLog(L"Unhook RawCreateFileMapping failed {}", status);
    }

    DetourTransactionBegin();
    DetourUpdateThread(GetCurrentThread());
    DetourAttach(reinterpret_cast<LPVOID*>(&RawMapViewOfFile),
                 reinterpret_cast<void*>(MyMapViewOfFile));
    status = DetourTransactionCommit();
    if (status != NO_ERROR) {
      DebugLog(L"Hook RawMapViewOfFile failed {}", status);
    }

    return resources_pak_map;
  }
  return RawCreateFileMapping(hFile, lpAttributes, flProtect, dwMaximumSizeHigh,
                              dwMaximumSizeLow, lpName);
}

}  // namespace