Function SetFileData

Library/OcFileLib/FileProtocol.c:210–267

}

EFI_STATUS
SetFileData (
  IN EFI_FILE_PROTOCOL  *WritableFs OPTIONAL,
  IN CONST CHAR16       *FileName,
  IN CONST VOID         *Buffer,
  IN UINT32             Size
  )
{
  EFI_STATUS         Status;
  EFI_FILE_PROTOCOL  *Fs;
  EFI_FILE_PROTOCOL  *File;
  UINTN              WrittenSize;

  if (WritableFs == NULL) {
    Status = FindWritableFileSystem (&Fs);
    if (EFI_ERROR(Status)) {
      DEBUG ((DEBUG_VERBOSE, "OCFS: WriteFileData can't find writable FS\n"));
      return Status;
    }
  } else {
    Fs = WritableFs;
  }

  Status = SafeFileOpen (
    Fs,
    &File,
    (CHAR16 *) FileName,
    EFI_FILE_MODE_CREATE | EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE,
    0
    );

  if (!EFI_ERROR(Status)) {
    WrittenSize = Size;
    Status = File->Write (File, &WrittenSize, (VOID *) Buffer);
    Fs->Close (File);

    if (EFI_ERROR(Status)) {
      DEBUG ((DEBUG_VERBOSE, "OCFS: WriteFileData file->Write returned %r\n", Status));
    } else if (WrittenSize != Size) {
      DEBUG ((
        DEBUG_VERBOSE,
        "WriteFileData: File->Write truncated %u to %u\n",
        Status,
        Size,
        (UINT32) WrittenSize
        ));
      Status = EFI_BAD_BUFFER_SIZE;
    }
  } else {
    DEBUG ((DEBUG_VERBOSE, "OCFS: WriteFileData Fs->Open of %s returned %r\n", FileName, Status));
  }

  if (WritableFs == NULL) {
    Fs->Close (Fs);
  } 

  return Status;
}