mirror of
https://github.com/python/cpython.git
synced 2025-10-31 13:41:24 +00:00
5a53fdeee8
svn+ssh://pythondev@svn.python.org/python/trunk ........ r78678 | benjamin.peterson | 2010-03-04 21:07:59 -0600 (Thu, 04 Mar 2010) | 1 line set svn:eol-style ........ r78680 | benjamin.peterson | 2010-03-04 21:15:07 -0600 (Thu, 04 Mar 2010) | 1 line set svn:eol-style on Lib files ........ r78682 | benjamin.peterson | 2010-03-04 21:20:06 -0600 (Thu, 04 Mar 2010) | 1 line remove the svn:executable property from files that don't have shebang lines ........
103 lines
3.2 KiB
Python
103 lines
3.2 KiB
Python
"""Test program for the fcntl C module.
|
|
|
|
OS/2+EMX doesn't support the file locking operations.
|
|
|
|
"""
|
|
import os
|
|
import struct
|
|
import sys
|
|
import unittest
|
|
from test.support import verbose, TESTFN, unlink, run_unittest, import_module
|
|
|
|
# Skip test if no fnctl module.
|
|
fcntl = import_module('fcntl')
|
|
|
|
|
|
# TODO - Write tests for flock() and lockf().
|
|
|
|
def get_lockdata():
|
|
try:
|
|
os.O_LARGEFILE
|
|
except AttributeError:
|
|
start_len = "ll"
|
|
else:
|
|
start_len = "qq"
|
|
|
|
if sys.platform in ('netbsd1', 'netbsd2', 'netbsd3',
|
|
'Darwin1.2', 'darwin',
|
|
'freebsd2', 'freebsd3', 'freebsd4', 'freebsd5',
|
|
'freebsd6', 'freebsd7', 'freebsd8',
|
|
'bsdos2', 'bsdos3', 'bsdos4',
|
|
'openbsd', 'openbsd2', 'openbsd3', 'openbsd4'):
|
|
if struct.calcsize('l') == 8:
|
|
off_t = 'l'
|
|
pid_t = 'i'
|
|
else:
|
|
off_t = 'lxxxx'
|
|
pid_t = 'l'
|
|
lockdata = struct.pack(off_t + off_t + pid_t + 'hh', 0, 0, 0,
|
|
fcntl.F_WRLCK, 0)
|
|
elif sys.platform in ['aix3', 'aix4', 'hp-uxB', 'unixware7']:
|
|
lockdata = struct.pack('hhlllii', fcntl.F_WRLCK, 0, 0, 0, 0, 0, 0)
|
|
elif sys.platform in ['os2emx']:
|
|
lockdata = None
|
|
else:
|
|
lockdata = struct.pack('hh'+start_len+'hh', fcntl.F_WRLCK, 0, 0, 0, 0, 0)
|
|
if lockdata:
|
|
if verbose:
|
|
print('struct.pack: ', repr(lockdata))
|
|
return lockdata
|
|
|
|
lockdata = get_lockdata()
|
|
|
|
class TestFcntl(unittest.TestCase):
|
|
|
|
def setUp(self):
|
|
self.f = None
|
|
|
|
def tearDown(self):
|
|
if self.f and not self.f.closed:
|
|
self.f.close()
|
|
unlink(TESTFN)
|
|
|
|
def test_fcntl_fileno(self):
|
|
# the example from the library docs
|
|
self.f = open(TESTFN, 'w')
|
|
rv = fcntl.fcntl(self.f.fileno(), fcntl.F_SETFL, os.O_NONBLOCK)
|
|
if verbose:
|
|
print('Status from fcntl with O_NONBLOCK: ', rv)
|
|
if sys.platform not in ['os2emx']:
|
|
rv = fcntl.fcntl(self.f.fileno(), fcntl.F_SETLKW, lockdata)
|
|
if verbose:
|
|
print('String from fcntl with F_SETLKW: ', repr(rv))
|
|
self.f.close()
|
|
|
|
def test_fcntl_file_descriptor(self):
|
|
# again, but pass the file rather than numeric descriptor
|
|
self.f = open(TESTFN, 'w')
|
|
rv = fcntl.fcntl(self.f, fcntl.F_SETFL, os.O_NONBLOCK)
|
|
if sys.platform not in ['os2emx']:
|
|
rv = fcntl.fcntl(self.f, fcntl.F_SETLKW, lockdata)
|
|
self.f.close()
|
|
|
|
def test_fcntl_64_bit(self):
|
|
# Issue #1309352: fcntl shouldn't fail when the third arg fits in a
|
|
# C 'long' but not in a C 'int'.
|
|
try:
|
|
cmd = fcntl.F_NOTIFY
|
|
# This flag is larger than 2**31 in 64-bit builds
|
|
flags = fcntl.DN_MULTISHOT
|
|
except AttributeError:
|
|
self.skipTest("F_NOTIFY or DN_MULTISHOT unavailable")
|
|
fd = os.open(os.path.dirname(os.path.abspath(TESTFN)), os.O_RDONLY)
|
|
try:
|
|
fcntl.fcntl(fd, cmd, flags)
|
|
finally:
|
|
os.close(fd)
|
|
|
|
|
|
def test_main():
|
|
run_unittest(TestFcntl)
|
|
|
|
if __name__ == '__main__':
|
|
test_main()
|