test_fcntl.py revision 3661908a6ac75026e4504d9f62a6ac2e2fb2ec5e
1#! /usr/bin/env python 2"""Test program for the fcntl C module. 3 Roger E. Masse 4""" 5import struct 6import fcntl 7import FCNTL 8import os, sys 9from test_support import verify, verbose, TESTFN 10 11filename = TESTFN 12 13# the example from the library docs 14f = open(filename, 'w') 15rv = fcntl.fcntl(f.fileno(), FCNTL.F_SETFL, os.O_NONBLOCK) 16if verbose: 17 print 'Status from fnctl with O_NONBLOCK: ', rv 18 19if sys.platform in ('netbsd1', 'Darwin1.2', 20 'freebsd2', 'freebsd3', 'freebsd4', 'freebsd5', 21 'bsdos2', 'bsdos3', 'bsdos4', 22 'openbsd', 'openbsd2'): 23 lockdata = struct.pack('lxxxxlxxxxlhh', 0, 0, 0, FCNTL.F_WRLCK, 0) 24elif sys.platform in ['aix3', 'aix4', 'hp-uxB']: 25 lockdata = struct.pack('hhlllii', FCNTL.F_WRLCK, 0, 0, 0, 0, 0, 0) 26else: 27 lockdata = struct.pack('hhllhh', FCNTL.F_WRLCK, 0, 0, 0, 0, 0) 28if verbose: 29 print 'struct.pack: ', `lockdata` 30 31rv = fcntl.fcntl(f.fileno(), FCNTL.F_SETLKW, lockdata) 32if verbose: 33 print 'String from fcntl with F_SETLKW: ', `rv` 34 35f.close() 36os.unlink(filename) 37