Method copyBytes

java/com/facebook/soloader/SysUtil.java:315–326

Copy up to byteLimit bytes from the input stream to the output stream. @param os Destination stream @param is Input stream @param byteLimit Maximum number of bytes to copy @param buffer IO buffer to use @return Number of bytes actually copied

(RandomAccessFile os, InputStream is, int byteLimit, byte[] buffer)

   * @return Number of bytes actually copied
   */
  static int copyBytes(RandomAccessFile os, InputStream is, int byteLimit, byte[] buffer)
      throws IOException {
    // Yes, this method is exactly the same as the above, just with a different type for `os'.
    int bytesCopied = 0;
    int nrRead;
    while (bytesCopied < byteLimit
        && (nrRead = is.read(buffer, 0, Math.min(buffer.length, byteLimit - bytesCopied))) != -1) {
      os.write(buffer, 0, nrRead);
      bytesCopied += nrRead;
    }
    return bytesCopied;
  }

  public static void fsyncAll(File fileName) throws IOException {
    Stack<File> filesStack = new Stack<>();