186   std::unique_ptr<FileInterface> old_file = File::FOpen(old_filename, O_RDONLY);  in bspatch()  local
187   if (!old_file) {  in bspatch()
198     old_file.reset(new ExtentsFile(std::move(old_file), parsed_old_extents));  in bspatch()
226   return bspatch(old_file, new_file, patch_data, patch_size);  in bspatch()
236   std::unique_ptr<FileInterface> old_file(new MemoryFile(old_data, old_size));  in bspatch()  local
239   return bspatch(old_file, new_file, patch_data, patch_size);  in bspatch()
244 int bspatch(const std::unique_ptr<FileInterface>& old_file,  in bspatch()  argument
255   if (!old_file->GetSize(&old_file_size)) {  in bspatch()
297         !old_file->Seek(seek_offset)) {  in bspatch()
308       if (!old_file->Read(old_buf.data(), bytes_to_read, &read_bytes)) {  in bspatch()
371   old_file->Close();  in bspatch()