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#! /usr/bin/env python
"""Test program for the fcntl C module.
Roger E. Masse
"""
import struct
import fcntl
import FCNTL
import os
verbose = 0
if __name__ == '__main__':
verbose = 1
filename = '/tmp/delete-me'
# the example from the library docs
f = open(filename,'w')
rv = fcntl.fcntl(f.fileno(), FCNTL.O_NDELAY, 1)
if verbose:
print 'Status from fnctl with O_NDELAY: ', 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)
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