code: def symlink(self, linkname, existing_file):
          
          log.info("***SYMLINK* %s (link) -> %s (existing)", linkname, existing_file)
          sourcepath = os.path.abspath(existing_file)
          if not os.path.exists(sourcepath): # broken symlink
              raise OSError(errno.ENOENT, '')
          try:
              with open(sourcepath) as sourcefile:
                  self.client.up(linkname, sourcefile)
                  return ESUCCESS
          except Exception as e:
              log.exception(e)
  
          raise OSError(errno.ENOENT, '')
docs: Called to create a symlink `target -> source` (e.g. ln -s existing_file linkname). In jottafuse, we upload the _contents_ of source.
  
          This is a handy shortcut for streaming uploads directly from disk, without reading the file
          into memory first