Current File : //lib/calibre/calibre/utils/socket_inheritance.py
#!/usr/bin/env python3
'''
Created on 29 Nov 2013
@author: charles
Code taken from https://mail.python.org/pipermail/python-dev/2007-June/073745.html
modified to make it work
'''
def get_socket_inherit(s):
'''
Returns True if the socket has been set to allow inheritance across
forks and execs to child processes, otherwise False
'''
try:
return s.get_inheritable()
except Exception:
import traceback
traceback.print_exc()
def set_socket_inherit(s, inherit=False):
'''
Mark a socket as inheritable or non-inheritable to child processes.
This should be called right after socket creation if you want
to prevent the socket from being inherited by child processes.
Note that for sockets, a new socket returned from accept() will be
inheritable even if the listener socket was not; so you should call
set_socket_inherit for the new socket as well.
'''
try:
s.set_inheritable(inherit)
except Exception:
import traceback
traceback.print_exc()
def test():
import socket
s = socket.socket()
orig = get_socket_inherit(s)
set_socket_inherit(s, orig ^ True)
if orig == get_socket_inherit(s):
raise RuntimeError('Failed to change socket inheritance status')
print('OK!')
if __name__ == '__main__':
test()
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