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import os
import py
from rpython.tool.udir import udir
if os.name != 'posix':
py.test.skip("fcntl module only available on unix")
def teardown_module(mod):
for i in "abcde":
if os.path.exists(i):
os.unlink(i)
class AppTestFcntl:
spaceconfig = dict(usemodules=('fcntl', 'array', 'struct', 'termios',
'select', 'time'))
def setup_class(cls):
tmpprefix = str(udir.ensure('test_fcntl', dir=1).join('tmp_'))
cls.w_tmp = cls.space.wrap(tmpprefix)
def test_fcntl(self):
import errno
import fcntl
import os
import sys
import struct
class F:
def __init__(self, fn):
self.fn = fn
def fileno(self):
return self.fn
f = open(self.tmp + "b", "w+")
original = fcntl.fcntl(f, 1, 0)
fcntl.fcntl(f, 1)
fcntl.fcntl(F(int(f.fileno())), 1)
raises(TypeError, fcntl.fcntl, "foo")
raises(TypeError, fcntl.fcntl, f, "foo")
exc = raises(TypeError, fcntl.fcntl, F("foo"), 1)
assert str(exc.value) == 'fileno() returned a non-integer'
exc = raises(OverflowError, fcntl.fcntl, 2147483647 + 1, 1, 0)
exc = raises(OverflowError, fcntl.fcntl, F(2147483647 + 1), 1, 0)
exc = raises(OverflowError, fcntl.fcntl, -2147483648 - 1, 1, 0)
exc = raises(OverflowError, fcntl.fcntl, F(-2147483648 - 1), 1, 0)
raises(ValueError, fcntl.fcntl, -1, 1, 0)
raises(ValueError, fcntl.fcntl, F(-1), 1, 0)
raises(ValueError, fcntl.fcntl, F(int(-1)), 1, 0)
assert fcntl.fcntl(f, 1, 0) == original
assert fcntl.fcntl(f, 2, "foo") == b"foo"
assert fcntl.fcntl(f, 2, b"foo") == b"foo"
# This is supposed to work I think, but CPython 3.5 refuses it
# for reasons I don't understand:
# >>> _testcapi.getargs_s_hash(memoryview(b"foo"))
# TypeError: must be read-only bytes-like object, not memoryview
#
# assert fcntl.fcntl(f, 2, memoryview(b"foo")) == b"foo"
try:
os.O_LARGEFILE
except AttributeError:
start_len = "ll"
else:
start_len = "qq"
if any(substring in sys.platform.lower()
for substring in ('netbsd', 'darwin', 'freebsd', 'bsdos',
'openbsd')):
if struct.calcsize('l') == 8:
off_t = 'l'
pid_t = 'i'
else:
off_t = 'lxxxx'
pid_t = 'l'
format = "%s%s%shh" % (off_t, off_t, pid_t)
lockdata = struct.pack(format, 0, 0, 0, fcntl.F_WRLCK, 0)
else:
format = "hh%shh" % start_len
lockdata = struct.pack(format, fcntl.F_WRLCK, 0, 0, 0, 0, 0)
rv = fcntl.fcntl(f.fileno(), fcntl.F_SETLKW, lockdata)
assert rv == lockdata
assert fcntl.fcntl(f, fcntl.F_SETLKW, lockdata) == lockdata
# test duplication of file descriptor
rv = fcntl.fcntl(f, fcntl.F_DUPFD)
assert rv > 2 # > (stdin, stdout, stderr) at least
assert fcntl.fcntl(f, fcntl.F_DUPFD) > rv
assert fcntl.fcntl(f, fcntl.F_DUPFD, 99) == 99
# test descriptor flags
assert fcntl.fcntl(f, fcntl.F_GETFD) == 0
fcntl.fcntl(f, fcntl.F_SETFD, 1)
assert fcntl.fcntl(f, fcntl.F_GETFD, fcntl.FD_CLOEXEC) == 1
# test status flags
assert fcntl.fcntl(f.fileno(), fcntl.F_SETFL, os.O_NONBLOCK) == 0
assert fcntl.fcntl(f.fileno(), fcntl.F_SETFL, os.O_NDELAY) == 0
assert fcntl.fcntl(f, fcntl.F_SETFL, os.O_NONBLOCK) == 0
assert fcntl.fcntl(f, fcntl.F_SETFL, os.O_NDELAY) == 0
if "linux" in sys.platform:
# test managing signals
assert fcntl.fcntl(f, fcntl.F_GETOWN) == 0
fcntl.fcntl(f, fcntl.F_SETOWN, os.getpid())
assert fcntl.fcntl(f, fcntl.F_GETOWN) == os.getpid()
assert fcntl.fcntl(f, fcntl.F_GETSIG) == 0
fcntl.fcntl(f, fcntl.F_SETSIG, 20)
assert fcntl.fcntl(f, fcntl.F_GETSIG) == 20
# test leases
assert fcntl.fcntl(f, fcntl.F_GETLEASE) == fcntl.F_UNLCK
try:
fcntl.fcntl(f, fcntl.F_SETLEASE, fcntl.F_WRLCK)
assert fcntl.fcntl(f, fcntl.F_GETLEASE) == fcntl.F_WRLCK
except IOError as e:
if e.errno != errno.EAGAIN:
raise
else:
# this tests should fail under BSD
# with "Inappropriate ioctl for device"
raises(IOError, fcntl.fcntl, f, fcntl.F_GETOWN)
raises(IOError, fcntl.fcntl, f, fcntl.F_SETOWN, 20)
f.close()
def test_flock(self):
import fcntl
import os
import errno
f = open(self.tmp + "c", "w+")
raises(TypeError, fcntl.flock, "foo")
raises(TypeError, fcntl.flock, f, "foo")
fcntl.flock(f, fcntl.LOCK_EX | fcntl.LOCK_NB)
pid = os.fork()
if pid == 0:
rval = 2
try:
fcntl.flock(open(f.name, f.mode), fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError as e:
if e.errno not in (errno.EACCES, errno.EAGAIN):
raise
rval = 0
else:
rval = 1
finally:
os._exit(rval)
assert pid > 0
(pid, status) = os.waitpid(pid, 0)
assert os.WIFEXITED(status) == True
assert os.WEXITSTATUS(status) == 0
fcntl.flock(f, fcntl.LOCK_UN)
f.close()
def test_lockf(self):
import fcntl
import os
import errno
f = open(self.tmp + "d", "w+")
raises(TypeError, fcntl.lockf, f, "foo")
raises(TypeError, fcntl.lockf, f, fcntl.LOCK_UN, "foo")
raises(ValueError, fcntl.lockf, f, -256)
raises(ValueError, fcntl.lockf, f, 256)
fcntl.lockf(f, fcntl.LOCK_EX | fcntl.LOCK_NB)
pid = os.fork()
if pid == 0:
rval = 2
try:
fcntl.lockf(open(f.name, f.mode), fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError as e:
if e.errno not in (errno.EACCES, errno.EAGAIN):
raise
rval = 0
else:
rval = 1
finally:
os._exit(rval)
assert pid > 0
(pid, status) = os.waitpid(pid, 0)
assert os.WIFEXITED(status) == True
assert os.WEXITSTATUS(status) == 0
fcntl.lockf(f, fcntl.LOCK_UN)
f.close()
def test_ioctl(self):
import fcntl
import array
import os
import pty
import time
try:
from termios import TIOCGPGRP
except ImportError:
skip("don't know how to test ioctl() on this platform")
raises(TypeError, fcntl.ioctl, "foo")
raises(TypeError, fcntl.ioctl, 0, "foo")
#raises(TypeError, fcntl.ioctl, 0, TIOCGPGRP, float(0))
raises(TypeError, fcntl.ioctl, 0, TIOCGPGRP, 1, "foo", "bar")
child_pid, mfd = pty.fork()
if child_pid == 0:
# We're the child
time.sleep(1)
os._exit(0)
try:
# We're the parent, we want TIOCGPGRP calls after child started but before it dies
time.sleep(0.5)
buf = array.array('i', [0])
res = fcntl.ioctl(mfd, TIOCGPGRP, buf, True)
assert res == 0
assert buf[0] != 0
expected = buf.tobytes()
buf = array.array('i', [0])
res = fcntl.ioctl(mfd, TIOCGPGRP, buf)
assert res == 0
assert buf.tobytes() == expected
buf = array.array('i', [0])
res = fcntl.ioctl(mfd, TIOCGPGRP, memoryview(buf))
assert res == 0
assert buf.tobytes() == expected
raises(TypeError, fcntl.ioctl, mfd, TIOCGPGRP, (), False)
res = fcntl.ioctl(mfd, TIOCGPGRP, buf, False)
assert res == expected
# xxx this fails on CPython 3.5, that's a minor bug
#raises(TypeError, fcntl.ioctl, mfd, TIOCGPGRP, "\x00\x00", True)
res = fcntl.ioctl(mfd, TIOCGPGRP, "\x00\x00\x00\x00")
assert res == expected
finally:
os.close(mfd)
def test_ioctl_int(self):
import os
import fcntl
import pty
try:
from termios import TCFLSH, TCIOFLUSH
except ImportError:
skip("don't know how to test ioctl() on this platform")
mfd, sfd = pty.openpty()
try:
assert fcntl.ioctl(mfd, TCFLSH, TCIOFLUSH) == 0
finally:
os.close(mfd)
os.close(sfd)
def test_ioctl_signed_unsigned_code_param(self):
import fcntl
import os
import pty
import struct
import termios
mfd, sfd = pty.openpty()
try:
if termios.TIOCSWINSZ < 0:
set_winsz_opcode_maybe_neg = termios.TIOCSWINSZ
set_winsz_opcode_pos = termios.TIOCSWINSZ & 0xffffffff
else:
set_winsz_opcode_pos = termios.TIOCSWINSZ
set_winsz_opcode_maybe_neg, = struct.unpack("i",
struct.pack("I", termios.TIOCSWINSZ))
our_winsz = struct.pack("HHHH",80,25,0,0)
# test both with a positive and potentially negative ioctl code
new_winsz = fcntl.ioctl(mfd, set_winsz_opcode_pos, our_winsz)
new_winsz = fcntl.ioctl(mfd, set_winsz_opcode_maybe_neg, our_winsz)
finally:
os.close(mfd)
os.close(sfd)
def test_ioctl_use_mask_on_op(self):
import os
import fcntl
import pty
try:
from termios import TCFLSH, TCIOFLUSH
except ImportError:
skip("don't know how to test ioctl() on this platform")
mfd, sfd = pty.openpty()
try:
assert fcntl.ioctl(mfd, TCFLSH | 0x1000000000000000000000, TCIOFLUSH) == 0
finally:
os.close(mfd)
os.close(sfd)
def test_large_flag(self):
import sys
if any(plat in sys.platform
for plat in ('darwin', 'openbsd', 'freebsd')):
skip("Mac OS doesn't have any large flag in fcntl.h")
import fcntl, sys
if sys.maxsize == 2147483647:
assert fcntl.DN_MULTISHOT == -2147483648
else:
assert fcntl.DN_MULTISHOT == 2147483648
fcntl.fcntl(0, fcntl.F_NOTIFY, fcntl.DN_MULTISHOT)
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