398     Slice prefixSlice;  in NewSequentialFile()  local
404       status = underlying->Read(prefixLength, &prefixSlice, prefixBuf.BufferStart());  in NewSequentialFile()
412     status = provider_->CreateCipherStream(fname, options, prefixSlice, &stream);  in NewSequentialFile()
436     Slice prefixSlice;  in NewRandomAccessFile()  local
442       status = underlying->Read(0, prefixLength, &prefixSlice, prefixBuf.BufferStart());  in NewRandomAccessFile()
450     status = provider_->CreateCipherStream(fname, options, prefixSlice, &stream);  in NewRandomAccessFile()
474     Slice prefixSlice;  in NewWritableFile()  local
482       prefixSlice = Slice(prefixBuf.BufferStart(), prefixBuf.CurrentSize());  in NewWritableFile()
484       status = underlying->Append(prefixSlice);  in NewWritableFile()
491     status = provider_->CreateCipherStream(fname, options, prefixSlice, &stream);  in NewWritableFile()
521     Slice prefixSlice;  in ReopenWritableFile()  local
529       prefixSlice = Slice(prefixBuf.BufferStart(), prefixBuf.CurrentSize());  in ReopenWritableFile()
531       status = underlying->Append(prefixSlice);  in ReopenWritableFile()
538     status = provider_->CreateCipherStream(fname, options, prefixSlice, &stream);  in ReopenWritableFile()
563     Slice prefixSlice;  in ReuseWritableFile()  local
571       prefixSlice = Slice(prefixBuf.BufferStart(), prefixBuf.CurrentSize());  in ReuseWritableFile()
573       status = underlying->Append(prefixSlice);  in ReuseWritableFile()
580     status = provider_->CreateCipherStream(fname, options, prefixSlice, &stream);  in ReuseWritableFile()
611     Slice prefixSlice;  in NewRandomRWFile()  local
618         status = underlying->Read(0, prefixLength, &prefixSlice, prefixBuf.BufferStart());  in NewRandomRWFile()
627         prefixSlice = Slice(prefixBuf.BufferStart(), prefixBuf.CurrentSize());  in NewRandomRWFile()
629         status = underlying->Write(0, prefixSlice);  in NewRandomRWFile()
637     status = provider_->CreateCipherStream(fname, options, prefixSlice, &stream);  in NewRandomRWFile()