mirror of https://github.com/python/cpython
29 lines
653 B
Python
29 lines
653 B
Python
#! /usr/bin/env python
|
|
"""Test program for the fcntl C module.
|
|
Roger E. Masse
|
|
"""
|
|
import struct
|
|
import fcntl
|
|
import FCNTL
|
|
import os
|
|
from test_support import verbose
|
|
|
|
filename = '/tmp/delete-me'
|
|
|
|
# the example from the library docs
|
|
f = open(filename,'w')
|
|
rv = fcntl.fcntl(f.fileno(), FCNTL.F_SETFL, os.O_NONBLOCK)
|
|
if verbose:
|
|
print 'Status from fnctl with O_NONBLOCK: ', rv
|
|
|
|
lockdata = struct.pack('hhllhh', FCNTL.F_WRLCK, 0, 0, 0, 0, 0)
|
|
if verbose:
|
|
print 'struct.pack: ', `lockdata`
|
|
|
|
rv = fcntl.fcntl(f.fileno(), FCNTL.F_SETLKW, lockdata)
|
|
if verbose:
|
|
print 'String from fcntl with F_SETLKW: ', `rv`
|
|
|
|
f.close()
|
|
os.unlink(filename)
|