mirror of https://github.com/python/cpython
73 lines
2.4 KiB
Python
73 lines
2.4 KiB
Python
import unittest
|
|
from test.test_support import run_unittest, import_module, get_attribute
|
|
import os, struct
|
|
fcntl = import_module('fcntl')
|
|
termios = import_module('termios')
|
|
get_attribute(termios, 'TIOCGPGRP') #Can't run tests without this feature
|
|
|
|
try:
|
|
tty = open("/dev/tty", "r")
|
|
except IOError:
|
|
raise unittest.SkipTest("Unable to open /dev/tty")
|
|
else:
|
|
# Skip if another process is in foreground
|
|
r = fcntl.ioctl(tty, termios.TIOCGPGRP, " ")
|
|
tty.close()
|
|
rpgrp = struct.unpack("i", r)[0]
|
|
if rpgrp not in (os.getpgrp(), os.getsid(0)):
|
|
raise unittest.SkipTest("Neither the process group nor the session "
|
|
"are attached to /dev/tty")
|
|
del tty, r, rpgrp
|
|
|
|
try:
|
|
import pty
|
|
except ImportError:
|
|
pty = None
|
|
|
|
class IoctlTests(unittest.TestCase):
|
|
def test_ioctl(self):
|
|
# If this process has been put into the background, TIOCGPGRP returns
|
|
# the session ID instead of the process group id.
|
|
ids = (os.getpgrp(), os.getsid(0))
|
|
tty = open("/dev/tty", "r")
|
|
r = fcntl.ioctl(tty, termios.TIOCGPGRP, " ")
|
|
rpgrp = struct.unpack("i", r)[0]
|
|
self.assertIn(rpgrp, ids)
|
|
|
|
def test_ioctl_mutate(self):
|
|
import array
|
|
buf = array.array('i', [0])
|
|
ids = (os.getpgrp(), os.getsid(0))
|
|
tty = open("/dev/tty", "r")
|
|
r = fcntl.ioctl(tty, termios.TIOCGPGRP, buf, 1)
|
|
rpgrp = buf[0]
|
|
self.assertEquals(r, 0)
|
|
self.assertIn(rpgrp, ids)
|
|
|
|
def test_ioctl_signed_unsigned_code_param(self):
|
|
if not pty:
|
|
raise unittest.SkipTest('pty module required')
|
|
mfd, sfd = pty.openpty()
|
|
try:
|
|
if termios.TIOCSWINSZ < 0:
|
|
set_winsz_opcode_maybe_neg = termios.TIOCSWINSZ
|
|
set_winsz_opcode_pos = termios.TIOCSWINSZ & 0xffffffffL
|
|
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_main():
|
|
run_unittest(IoctlTests)
|
|
|
|
if __name__ == "__main__":
|
|
test_main()
|