code: def set_close_exec(fd):
      flags = fcntl.fcntl(fd, fcntl.F_GETFD)
      fcntl.fcntl(fd, fcntl.F_SETFD, flags | fcntl.FD_CLOEXEC)
  
file_path: catboost/contrib/python/tornado/tornado-4/tornado/platform/posix.py
imports: from __future__ import absolute_import, division, print_function
  import fcntl
  import os
  from tornado.platform import common, interface
label_desc: Use image node_id 1 for calling a global function with example usage: set_close_exec(fd) without return types