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gh-119770: Make termios ioctl() constants positive (#119840)

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Victor Stinner 2024-05-31 17:18:40 +02:00 • committed by GitHub
parent bcc1be39cb
commit 64ff1e217d
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4 changed files with 32 additions and 18 deletions
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22
Lib/test/test_ioctl.py
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@ -66,23 +66,15 @@ class IoctlTests(unittest.TestCase):
# Test with a larger buffer, just for the record.
self._check_ioctl_mutate_len(2048)
def test_ioctl_signed_unsigned_code_param(self):
if not pty:
raise unittest.SkipTest('pty module required')
@unittest.skipIf(pty is None, 'pty module required')
def test_ioctl_set_window_size(self):
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)
# (rows, columns, xpixel, ypixel)
our_winsz = struct.pack("HHHH", 20, 40, 0, 0)
result = fcntl.ioctl(mfd, termios.TIOCSWINSZ, our_winsz)
new_winsz = struct.unpack("HHHH", result)
self.assertEqual(new_winsz[:2], (20, 40))
finally:
os.close(mfd)
os.close(sfd)