Function InitRefitLib

rEFIt_UEFI/refit/lib.cpp:176–215

//

EFI_STATUS InitRefitLib(IN EFI_HANDLE ImageHandle)
{
  EFI_STATUS  Status;
  XStringW    FilePathAsString;
  UINTN       i;
  UINTN                     DevicePathSize;
  EFI_DEVICE_PATH_PROTOCOL* TmpDevicePath;
  
  SelfImageHandle = ImageHandle;
  Status = gBS->HandleProtocol(SelfImageHandle, &gEfiLoadedImageProtocolGuid, (VOID **) &SelfLoadedImage);
  if (CheckFatalError(Status, L"while getting a LoadedImageProtocol handle"))
    return Status;
  
  SelfDeviceHandle = SelfLoadedImage->DeviceHandle;
  TmpDevicePath = DevicePathFromHandle (SelfDeviceHandle);
  DevicePathSize = GetDevicePathSize (TmpDevicePath);
  SelfDevicePath = (__typeof__(SelfDevicePath))AllocateAlignedPages(EFI_SIZE_TO_PAGES(DevicePathSize), 64);
  CopyMem(SelfDevicePath, TmpDevicePath, DevicePathSize);
  
	DBG("SelfDevicePath=%ls @%llX\n", FileDevicePathToXStringW(SelfDevicePath).wc_str(), (uintptr_t)SelfDeviceHandle);
  
  // find the current directory
  FilePathAsString = FileDevicePathToXStringW(SelfLoadedImage->FilePath);
  if (FilePathAsString.notEmpty()) {
    SelfFullDevicePath = FileDevicePath(SelfDeviceHandle, FilePathAsString);
    for (i = FilePathAsString.length(); i > 0 && FilePathAsString[i] != '\\'; i--) ;
    if (i > 0) {
      FilePathAsString = FilePathAsString.subString(0, i);
    } else {
      FilePathAsString = L"\\"_XSW;
    }
  } else {
    FilePathAsString = L"\\"_XSW;
  }
  SelfDirPath = FilePathAsString;
  
  DBG("SelfDirPath = %ls\n", SelfDirPath.wc_str());
  
  return FinishInitRefitLib();
}

VOID UninitRefitLib(VOID)
{