mirror of https://github.com/python/cpython
2435 lines
98 KiB
Python
2435 lines
98 KiB
Python
"Test posix functions"
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from test import support
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from test.support import is_apple
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from test.support import os_helper
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from test.support import warnings_helper
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from test.support.script_helper import assert_python_ok
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import copy
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import errno
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import sys
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import signal
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import time
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import os
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import platform
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import pickle
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import stat
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import tempfile
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import unittest
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import warnings
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import textwrap
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from contextlib import contextmanager
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try:
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import posix
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except ImportError:
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import nt as posix
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try:
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import pwd
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except ImportError:
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pwd = None
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_DUMMY_SYMLINK = os.path.join(tempfile.gettempdir(),
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os_helper.TESTFN + '-dummy-symlink')
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requires_32b = unittest.skipUnless(
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# Emscripten/WASI have 32 bits pointers, but support 64 bits syscall args.
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sys.maxsize < 2**32 and not (support.is_emscripten or support.is_wasi),
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'test is only meaningful on 32-bit builds'
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)
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def _supports_sched():
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if not hasattr(posix, 'sched_getscheduler'):
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return False
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try:
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posix.sched_getscheduler(0)
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except OSError as e:
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if e.errno == errno.ENOSYS:
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return False
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return True
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requires_sched = unittest.skipUnless(_supports_sched(), 'requires POSIX scheduler API')
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class PosixTester(unittest.TestCase):
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def setUp(self):
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# create empty file
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self.addCleanup(os_helper.unlink, os_helper.TESTFN)
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with open(os_helper.TESTFN, "wb"):
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pass
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self.enterContext(warnings_helper.check_warnings())
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warnings.filterwarnings('ignore', '.* potential security risk .*',
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RuntimeWarning)
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def testNoArgFunctions(self):
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# test posix functions which take no arguments and have
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# no side-effects which we need to cleanup (e.g., fork, wait, abort)
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NO_ARG_FUNCTIONS = [ "ctermid", "getcwd", "getcwdb", "uname",
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"times", "getloadavg",
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"getegid", "geteuid", "getgid", "getgroups",
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"getpid", "getpgrp", "getppid", "getuid", "sync",
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]
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for name in NO_ARG_FUNCTIONS:
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posix_func = getattr(posix, name, None)
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if posix_func is not None:
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with self.subTest(name):
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posix_func()
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self.assertRaises(TypeError, posix_func, 1)
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@unittest.skipUnless(hasattr(posix, 'getresuid'),
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'test needs posix.getresuid()')
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def test_getresuid(self):
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user_ids = posix.getresuid()
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self.assertEqual(len(user_ids), 3)
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for val in user_ids:
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self.assertGreaterEqual(val, 0)
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@unittest.skipUnless(hasattr(posix, 'getresgid'),
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'test needs posix.getresgid()')
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def test_getresgid(self):
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group_ids = posix.getresgid()
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self.assertEqual(len(group_ids), 3)
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for val in group_ids:
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self.assertGreaterEqual(val, 0)
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@unittest.skipUnless(hasattr(posix, 'setresuid'),
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'test needs posix.setresuid()')
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def test_setresuid(self):
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current_user_ids = posix.getresuid()
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self.assertIsNone(posix.setresuid(*current_user_ids))
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# -1 means don't change that value.
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self.assertIsNone(posix.setresuid(-1, -1, -1))
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@unittest.skipUnless(hasattr(posix, 'setresuid'),
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'test needs posix.setresuid()')
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def test_setresuid_exception(self):
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# Don't do this test if someone is silly enough to run us as root.
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current_user_ids = posix.getresuid()
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if 0 not in current_user_ids:
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new_user_ids = (current_user_ids[0]+1, -1, -1)
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self.assertRaises(OSError, posix.setresuid, *new_user_ids)
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@unittest.skipUnless(hasattr(posix, 'setresgid'),
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'test needs posix.setresgid()')
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def test_setresgid(self):
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current_group_ids = posix.getresgid()
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self.assertIsNone(posix.setresgid(*current_group_ids))
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# -1 means don't change that value.
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self.assertIsNone(posix.setresgid(-1, -1, -1))
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@unittest.skipUnless(hasattr(posix, 'setresgid'),
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'test needs posix.setresgid()')
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def test_setresgid_exception(self):
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# Don't do this test if someone is silly enough to run us as root.
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current_group_ids = posix.getresgid()
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if 0 not in current_group_ids:
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new_group_ids = (current_group_ids[0]+1, -1, -1)
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self.assertRaises(OSError, posix.setresgid, *new_group_ids)
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@unittest.skipUnless(hasattr(posix, 'initgroups'),
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"test needs os.initgroups()")
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@unittest.skipUnless(hasattr(pwd, 'getpwuid'), "test needs pwd.getpwuid()")
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def test_initgroups(self):
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# It takes a string and an integer; check that it raises a TypeError
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# for other argument lists.
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self.assertRaises(TypeError, posix.initgroups)
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self.assertRaises(TypeError, posix.initgroups, None)
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self.assertRaises(TypeError, posix.initgroups, 3, "foo")
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self.assertRaises(TypeError, posix.initgroups, "foo", 3, object())
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# If a non-privileged user invokes it, it should fail with OSError
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# EPERM.
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if os.getuid() != 0:
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try:
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name = pwd.getpwuid(posix.getuid()).pw_name
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except KeyError:
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# the current UID may not have a pwd entry
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raise unittest.SkipTest("need a pwd entry")
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try:
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posix.initgroups(name, 13)
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except OSError as e:
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self.assertEqual(e.errno, errno.EPERM)
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else:
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self.fail("Expected OSError to be raised by initgroups")
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@unittest.skipUnless(hasattr(posix, 'statvfs'),
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'test needs posix.statvfs()')
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def test_statvfs(self):
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self.assertTrue(posix.statvfs(os.curdir))
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@unittest.skipUnless(hasattr(posix, 'fstatvfs'),
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'test needs posix.fstatvfs()')
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def test_fstatvfs(self):
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fp = open(os_helper.TESTFN)
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try:
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self.assertTrue(posix.fstatvfs(fp.fileno()))
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self.assertTrue(posix.statvfs(fp.fileno()))
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finally:
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fp.close()
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@unittest.skipUnless(hasattr(posix, 'ftruncate'),
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'test needs posix.ftruncate()')
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def test_ftruncate(self):
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fp = open(os_helper.TESTFN, 'w+')
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try:
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# we need to have some data to truncate
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fp.write('test')
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fp.flush()
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posix.ftruncate(fp.fileno(), 0)
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finally:
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fp.close()
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@unittest.skipUnless(hasattr(posix, 'truncate'), "test needs posix.truncate()")
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def test_truncate(self):
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with open(os_helper.TESTFN, 'w') as fp:
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fp.write('test')
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fp.flush()
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posix.truncate(os_helper.TESTFN, 0)
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@unittest.skipUnless(getattr(os, 'execve', None) in os.supports_fd, "test needs execve() to support the fd parameter")
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@support.requires_fork()
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def test_fexecve(self):
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fp = os.open(sys.executable, os.O_RDONLY)
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try:
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pid = os.fork()
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if pid == 0:
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os.chdir(os.path.split(sys.executable)[0])
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posix.execve(fp, [sys.executable, '-c', 'pass'], os.environ)
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else:
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support.wait_process(pid, exitcode=0)
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finally:
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os.close(fp)
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@unittest.skipUnless(hasattr(posix, 'waitid'), "test needs posix.waitid()")
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@support.requires_fork()
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def test_waitid(self):
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pid = os.fork()
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if pid == 0:
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os.chdir(os.path.split(sys.executable)[0])
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posix.execve(sys.executable, [sys.executable, '-c', 'pass'], os.environ)
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else:
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res = posix.waitid(posix.P_PID, pid, posix.WEXITED)
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self.assertEqual(pid, res.si_pid)
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@support.requires_fork()
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def test_register_at_fork(self):
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with self.assertRaises(TypeError, msg="Positional args not allowed"):
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os.register_at_fork(lambda: None)
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with self.assertRaises(TypeError, msg="Args must be callable"):
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os.register_at_fork(before=2)
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with self.assertRaises(TypeError, msg="Args must be callable"):
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os.register_at_fork(after_in_child="three")
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with self.assertRaises(TypeError, msg="Args must be callable"):
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os.register_at_fork(after_in_parent=b"Five")
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with self.assertRaises(TypeError, msg="Args must not be None"):
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os.register_at_fork(before=None)
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with self.assertRaises(TypeError, msg="Args must not be None"):
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os.register_at_fork(after_in_child=None)
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with self.assertRaises(TypeError, msg="Args must not be None"):
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os.register_at_fork(after_in_parent=None)
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with self.assertRaises(TypeError, msg="Invalid arg was allowed"):
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# Ensure a combination of valid and invalid is an error.
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os.register_at_fork(before=None, after_in_parent=lambda: 3)
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with self.assertRaises(TypeError, msg="At least one argument is required"):
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# when no arg is passed
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os.register_at_fork()
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with self.assertRaises(TypeError, msg="Invalid arg was allowed"):
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# Ensure a combination of valid and invalid is an error.
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os.register_at_fork(before=lambda: None, after_in_child='')
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# We test actual registrations in their own process so as not to
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# pollute this one. There is no way to unregister for cleanup.
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code = """if 1:
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import os
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r, w = os.pipe()
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fin_r, fin_w = os.pipe()
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os.register_at_fork(before=lambda: os.write(w, b'A'))
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os.register_at_fork(after_in_parent=lambda: os.write(w, b'C'))
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os.register_at_fork(after_in_child=lambda: os.write(w, b'E'))
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os.register_at_fork(before=lambda: os.write(w, b'B'),
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after_in_parent=lambda: os.write(w, b'D'),
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after_in_child=lambda: os.write(w, b'F'))
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pid = os.fork()
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if pid == 0:
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# At this point, after-forkers have already been executed
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os.close(w)
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# Wait for parent to tell us to exit
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os.read(fin_r, 1)
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os._exit(0)
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else:
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try:
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os.close(w)
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with open(r, "rb") as f:
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data = f.read()
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assert len(data) == 6, data
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# Check before-fork callbacks
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assert data[:2] == b'BA', data
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# Check after-fork callbacks
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assert sorted(data[2:]) == list(b'CDEF'), data
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assert data.index(b'C') < data.index(b'D'), data
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assert data.index(b'E') < data.index(b'F'), data
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finally:
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os.write(fin_w, b'!')
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"""
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assert_python_ok('-c', code)
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@unittest.skipUnless(hasattr(posix, 'lockf'), "test needs posix.lockf()")
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def test_lockf(self):
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fd = os.open(os_helper.TESTFN, os.O_WRONLY | os.O_CREAT)
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try:
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os.write(fd, b'test')
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os.lseek(fd, 0, os.SEEK_SET)
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posix.lockf(fd, posix.F_LOCK, 4)
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# section is locked
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posix.lockf(fd, posix.F_ULOCK, 4)
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finally:
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os.close(fd)
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@unittest.skipUnless(hasattr(posix, 'pread'), "test needs posix.pread()")
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def test_pread(self):
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fd = os.open(os_helper.TESTFN, os.O_RDWR | os.O_CREAT)
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try:
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os.write(fd, b'test')
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os.lseek(fd, 0, os.SEEK_SET)
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self.assertEqual(b'es', posix.pread(fd, 2, 1))
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# the first pread() shouldn't disturb the file offset
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self.assertEqual(b'te', posix.read(fd, 2))
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finally:
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os.close(fd)
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@unittest.skipUnless(hasattr(posix, 'preadv'), "test needs posix.preadv()")
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def test_preadv(self):
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fd = os.open(os_helper.TESTFN, os.O_RDWR | os.O_CREAT)
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try:
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os.write(fd, b'test1tt2t3t5t6t6t8')
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buf = [bytearray(i) for i in [5, 3, 2]]
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self.assertEqual(posix.preadv(fd, buf, 3), 10)
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self.assertEqual([b't1tt2', b't3t', b'5t'], list(buf))
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finally:
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os.close(fd)
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@unittest.skipUnless(hasattr(posix, 'preadv'), "test needs posix.preadv()")
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@unittest.skipUnless(hasattr(posix, 'RWF_HIPRI'), "test needs posix.RWF_HIPRI")
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def test_preadv_flags(self):
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fd = os.open(os_helper.TESTFN, os.O_RDWR | os.O_CREAT)
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try:
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os.write(fd, b'test1tt2t3t5t6t6t8')
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buf = [bytearray(i) for i in [5, 3, 2]]
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self.assertEqual(posix.preadv(fd, buf, 3, os.RWF_HIPRI), 10)
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self.assertEqual([b't1tt2', b't3t', b'5t'], list(buf))
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except NotImplementedError:
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self.skipTest("preadv2 not available")
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except OSError as inst:
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# Is possible that the macro RWF_HIPRI was defined at compilation time
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# but the option is not supported by the kernel or the runtime libc shared
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# library.
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if inst.errno in {errno.EINVAL, errno.ENOTSUP}:
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raise unittest.SkipTest("RWF_HIPRI is not supported by the current system")
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else:
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raise
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finally:
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os.close(fd)
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@unittest.skipUnless(hasattr(posix, 'preadv'), "test needs posix.preadv()")
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@requires_32b
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def test_preadv_overflow_32bits(self):
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fd = os.open(os_helper.TESTFN, os.O_RDWR | os.O_CREAT)
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try:
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buf = [bytearray(2**16)] * 2**15
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with self.assertRaises(OSError) as cm:
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os.preadv(fd, buf, 0)
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self.assertEqual(cm.exception.errno, errno.EINVAL)
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self.assertEqual(bytes(buf[0]), b'\0'* 2**16)
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finally:
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os.close(fd)
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@unittest.skipUnless(hasattr(posix, 'pwrite'), "test needs posix.pwrite()")
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def test_pwrite(self):
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fd = os.open(os_helper.TESTFN, os.O_RDWR | os.O_CREAT)
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try:
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os.write(fd, b'test')
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os.lseek(fd, 0, os.SEEK_SET)
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posix.pwrite(fd, b'xx', 1)
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self.assertEqual(b'txxt', posix.read(fd, 4))
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finally:
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os.close(fd)
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@unittest.skipUnless(hasattr(posix, 'pwritev'), "test needs posix.pwritev()")
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def test_pwritev(self):
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fd = os.open(os_helper.TESTFN, os.O_RDWR | os.O_CREAT)
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try:
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os.write(fd, b"xx")
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os.lseek(fd, 0, os.SEEK_SET)
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n = os.pwritev(fd, [b'test1', b'tt2', b't3'], 2)
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self.assertEqual(n, 10)
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os.lseek(fd, 0, os.SEEK_SET)
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self.assertEqual(b'xxtest1tt2t3', posix.read(fd, 100))
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finally:
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os.close(fd)
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@unittest.skipUnless(hasattr(posix, 'pwritev'), "test needs posix.pwritev()")
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@unittest.skipUnless(hasattr(posix, 'os.RWF_SYNC'), "test needs os.RWF_SYNC")
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def test_pwritev_flags(self):
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fd = os.open(os_helper.TESTFN, os.O_RDWR | os.O_CREAT)
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try:
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os.write(fd,b"xx")
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os.lseek(fd, 0, os.SEEK_SET)
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n = os.pwritev(fd, [b'test1', b'tt2', b't3'], 2, os.RWF_SYNC)
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self.assertEqual(n, 10)
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os.lseek(fd, 0, os.SEEK_SET)
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self.assertEqual(b'xxtest1tt2', posix.read(fd, 100))
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finally:
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os.close(fd)
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@unittest.skipUnless(hasattr(posix, 'pwritev'), "test needs posix.pwritev()")
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@requires_32b
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def test_pwritev_overflow_32bits(self):
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fd = os.open(os_helper.TESTFN, os.O_RDWR | os.O_CREAT)
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try:
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with self.assertRaises(OSError) as cm:
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os.pwritev(fd, [b"x" * 2**16] * 2**15, 0)
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self.assertEqual(cm.exception.errno, errno.EINVAL)
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finally:
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os.close(fd)
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@unittest.skipUnless(hasattr(posix, 'posix_fallocate'),
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"test needs posix.posix_fallocate()")
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def test_posix_fallocate(self):
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fd = os.open(os_helper.TESTFN, os.O_WRONLY | os.O_CREAT)
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try:
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posix.posix_fallocate(fd, 0, 10)
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except OSError as inst:
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# issue10812, ZFS doesn't appear to support posix_fallocate,
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# so skip Solaris-based since they are likely to have ZFS.
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# issue33655: Also ignore EINVAL on *BSD since ZFS is also
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# often used there.
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if inst.errno == errno.EINVAL and sys.platform.startswith(
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('sunos', 'freebsd', 'openbsd', 'gnukfreebsd')):
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raise unittest.SkipTest("test may fail on ZFS filesystems")
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elif inst.errno == errno.EOPNOTSUPP and sys.platform.startswith("netbsd"):
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raise unittest.SkipTest("test may fail on FFS filesystems")
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else:
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raise
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finally:
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os.close(fd)
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|
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# issue31106 - posix_fallocate() does not set error in errno.
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@unittest.skipUnless(hasattr(posix, 'posix_fallocate'),
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"test needs posix.posix_fallocate()")
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def test_posix_fallocate_errno(self):
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try:
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posix.posix_fallocate(-42, 0, 10)
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except OSError as inst:
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if inst.errno != errno.EBADF:
|
|
raise
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'posix_fadvise'),
|
|
"test needs posix.posix_fadvise()")
|
|
def test_posix_fadvise(self):
|
|
fd = os.open(os_helper.TESTFN, os.O_RDONLY)
|
|
try:
|
|
posix.posix_fadvise(fd, 0, 0, posix.POSIX_FADV_WILLNEED)
|
|
finally:
|
|
os.close(fd)
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'posix_fadvise'),
|
|
"test needs posix.posix_fadvise()")
|
|
def test_posix_fadvise_errno(self):
|
|
try:
|
|
posix.posix_fadvise(-42, 0, 0, posix.POSIX_FADV_WILLNEED)
|
|
except OSError as inst:
|
|
if inst.errno != errno.EBADF:
|
|
raise
|
|
|
|
@unittest.skipUnless(os.utime in os.supports_fd, "test needs fd support in os.utime")
|
|
def test_utime_with_fd(self):
|
|
now = time.time()
|
|
fd = os.open(os_helper.TESTFN, os.O_RDONLY)
|
|
try:
|
|
posix.utime(fd)
|
|
posix.utime(fd, None)
|
|
self.assertRaises(TypeError, posix.utime, fd, (None, None))
|
|
self.assertRaises(TypeError, posix.utime, fd, (now, None))
|
|
self.assertRaises(TypeError, posix.utime, fd, (None, now))
|
|
posix.utime(fd, (int(now), int(now)))
|
|
posix.utime(fd, (now, now))
|
|
self.assertRaises(ValueError, posix.utime, fd, (now, now), ns=(now, now))
|
|
self.assertRaises(ValueError, posix.utime, fd, (now, 0), ns=(None, None))
|
|
self.assertRaises(ValueError, posix.utime, fd, (None, None), ns=(now, 0))
|
|
posix.utime(fd, (int(now), int((now - int(now)) * 1e9)))
|
|
posix.utime(fd, ns=(int(now), int((now - int(now)) * 1e9)))
|
|
|
|
finally:
|
|
os.close(fd)
|
|
|
|
@unittest.skipUnless(os.utime in os.supports_follow_symlinks, "test needs follow_symlinks support in os.utime")
|
|
def test_utime_nofollow_symlinks(self):
|
|
now = time.time()
|
|
posix.utime(os_helper.TESTFN, None, follow_symlinks=False)
|
|
self.assertRaises(TypeError, posix.utime, os_helper.TESTFN,
|
|
(None, None), follow_symlinks=False)
|
|
self.assertRaises(TypeError, posix.utime, os_helper.TESTFN,
|
|
(now, None), follow_symlinks=False)
|
|
self.assertRaises(TypeError, posix.utime, os_helper.TESTFN,
|
|
(None, now), follow_symlinks=False)
|
|
posix.utime(os_helper.TESTFN, (int(now), int(now)),
|
|
follow_symlinks=False)
|
|
posix.utime(os_helper.TESTFN, (now, now), follow_symlinks=False)
|
|
posix.utime(os_helper.TESTFN, follow_symlinks=False)
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'writev'), "test needs posix.writev()")
|
|
def test_writev(self):
|
|
fd = os.open(os_helper.TESTFN, os.O_RDWR | os.O_CREAT)
|
|
try:
|
|
n = os.writev(fd, (b'test1', b'tt2', b't3'))
|
|
self.assertEqual(n, 10)
|
|
|
|
os.lseek(fd, 0, os.SEEK_SET)
|
|
self.assertEqual(b'test1tt2t3', posix.read(fd, 10))
|
|
|
|
# Issue #20113: empty list of buffers should not crash
|
|
try:
|
|
size = posix.writev(fd, [])
|
|
except OSError:
|
|
# writev(fd, []) raises OSError(22, "Invalid argument")
|
|
# on OpenIndiana
|
|
pass
|
|
else:
|
|
self.assertEqual(size, 0)
|
|
finally:
|
|
os.close(fd)
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'writev'), "test needs posix.writev()")
|
|
@requires_32b
|
|
def test_writev_overflow_32bits(self):
|
|
fd = os.open(os_helper.TESTFN, os.O_RDWR | os.O_CREAT)
|
|
try:
|
|
with self.assertRaises(OSError) as cm:
|
|
os.writev(fd, [b"x" * 2**16] * 2**15)
|
|
self.assertEqual(cm.exception.errno, errno.EINVAL)
|
|
finally:
|
|
os.close(fd)
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'readv'), "test needs posix.readv()")
|
|
def test_readv(self):
|
|
fd = os.open(os_helper.TESTFN, os.O_RDWR | os.O_CREAT)
|
|
try:
|
|
os.write(fd, b'test1tt2t3')
|
|
os.lseek(fd, 0, os.SEEK_SET)
|
|
buf = [bytearray(i) for i in [5, 3, 2]]
|
|
self.assertEqual(posix.readv(fd, buf), 10)
|
|
self.assertEqual([b'test1', b'tt2', b't3'], [bytes(i) for i in buf])
|
|
|
|
# Issue #20113: empty list of buffers should not crash
|
|
try:
|
|
size = posix.readv(fd, [])
|
|
except OSError:
|
|
# readv(fd, []) raises OSError(22, "Invalid argument")
|
|
# on OpenIndiana
|
|
pass
|
|
else:
|
|
self.assertEqual(size, 0)
|
|
finally:
|
|
os.close(fd)
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'readv'), "test needs posix.readv()")
|
|
@requires_32b
|
|
def test_readv_overflow_32bits(self):
|
|
fd = os.open(os_helper.TESTFN, os.O_RDWR | os.O_CREAT)
|
|
try:
|
|
buf = [bytearray(2**16)] * 2**15
|
|
with self.assertRaises(OSError) as cm:
|
|
os.readv(fd, buf)
|
|
self.assertEqual(cm.exception.errno, errno.EINVAL)
|
|
self.assertEqual(bytes(buf[0]), b'\0'* 2**16)
|
|
finally:
|
|
os.close(fd)
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'dup'),
|
|
'test needs posix.dup()')
|
|
@unittest.skipIf(support.is_wasi, "WASI does not have dup()")
|
|
def test_dup(self):
|
|
fp = open(os_helper.TESTFN)
|
|
try:
|
|
fd = posix.dup(fp.fileno())
|
|
self.assertIsInstance(fd, int)
|
|
os.close(fd)
|
|
finally:
|
|
fp.close()
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'confstr'),
|
|
'test needs posix.confstr()')
|
|
@unittest.skipIf(support.is_apple_mobile, "gh-118201: Test is flaky on iOS")
|
|
def test_confstr(self):
|
|
self.assertRaises(ValueError, posix.confstr, "CS_garbage")
|
|
self.assertEqual(len(posix.confstr("CS_PATH")) > 0, True)
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'dup2'),
|
|
'test needs posix.dup2()')
|
|
@unittest.skipIf(support.is_wasi, "WASI does not have dup2()")
|
|
def test_dup2(self):
|
|
fp1 = open(os_helper.TESTFN)
|
|
fp2 = open(os_helper.TESTFN)
|
|
try:
|
|
posix.dup2(fp1.fileno(), fp2.fileno())
|
|
finally:
|
|
fp1.close()
|
|
fp2.close()
|
|
|
|
@unittest.skipUnless(hasattr(os, 'O_CLOEXEC'), "needs os.O_CLOEXEC")
|
|
@support.requires_linux_version(2, 6, 23)
|
|
@support.requires_subprocess()
|
|
def test_oscloexec(self):
|
|
fd = os.open(os_helper.TESTFN, os.O_RDONLY|os.O_CLOEXEC)
|
|
self.addCleanup(os.close, fd)
|
|
self.assertFalse(os.get_inheritable(fd))
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'O_EXLOCK'),
|
|
'test needs posix.O_EXLOCK')
|
|
def test_osexlock(self):
|
|
fd = os.open(os_helper.TESTFN,
|
|
os.O_WRONLY|os.O_EXLOCK|os.O_CREAT)
|
|
self.assertRaises(OSError, os.open, os_helper.TESTFN,
|
|
os.O_WRONLY|os.O_EXLOCK|os.O_NONBLOCK)
|
|
os.close(fd)
|
|
|
|
if hasattr(posix, "O_SHLOCK"):
|
|
fd = os.open(os_helper.TESTFN,
|
|
os.O_WRONLY|os.O_SHLOCK|os.O_CREAT)
|
|
self.assertRaises(OSError, os.open, os_helper.TESTFN,
|
|
os.O_WRONLY|os.O_EXLOCK|os.O_NONBLOCK)
|
|
os.close(fd)
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'O_SHLOCK'),
|
|
'test needs posix.O_SHLOCK')
|
|
def test_osshlock(self):
|
|
fd1 = os.open(os_helper.TESTFN,
|
|
os.O_WRONLY|os.O_SHLOCK|os.O_CREAT)
|
|
fd2 = os.open(os_helper.TESTFN,
|
|
os.O_WRONLY|os.O_SHLOCK|os.O_CREAT)
|
|
os.close(fd2)
|
|
os.close(fd1)
|
|
|
|
if hasattr(posix, "O_EXLOCK"):
|
|
fd = os.open(os_helper.TESTFN,
|
|
os.O_WRONLY|os.O_SHLOCK|os.O_CREAT)
|
|
self.assertRaises(OSError, os.open, os_helper.TESTFN,
|
|
os.O_RDONLY|os.O_EXLOCK|os.O_NONBLOCK)
|
|
os.close(fd)
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'fstat'),
|
|
'test needs posix.fstat()')
|
|
def test_fstat(self):
|
|
fp = open(os_helper.TESTFN)
|
|
try:
|
|
self.assertTrue(posix.fstat(fp.fileno()))
|
|
self.assertTrue(posix.stat(fp.fileno()))
|
|
|
|
self.assertRaisesRegex(TypeError,
|
|
'should be string, bytes, os.PathLike or integer, not',
|
|
posix.stat, float(fp.fileno()))
|
|
finally:
|
|
fp.close()
|
|
|
|
def test_stat(self):
|
|
self.assertTrue(posix.stat(os_helper.TESTFN))
|
|
self.assertTrue(posix.stat(os.fsencode(os_helper.TESTFN)))
|
|
|
|
self.assertRaisesRegex(TypeError,
|
|
'should be string, bytes, os.PathLike or integer, not',
|
|
posix.stat, bytearray(os.fsencode(os_helper.TESTFN)))
|
|
self.assertRaisesRegex(TypeError,
|
|
'should be string, bytes, os.PathLike or integer, not',
|
|
posix.stat, None)
|
|
self.assertRaisesRegex(TypeError,
|
|
'should be string, bytes, os.PathLike or integer, not',
|
|
posix.stat, list(os_helper.TESTFN))
|
|
self.assertRaisesRegex(TypeError,
|
|
'should be string, bytes, os.PathLike or integer, not',
|
|
posix.stat, list(os.fsencode(os_helper.TESTFN)))
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'mkfifo'), "don't have mkfifo()")
|
|
def test_mkfifo(self):
|
|
if sys.platform == "vxworks":
|
|
fifo_path = os.path.join("/fifos/", os_helper.TESTFN)
|
|
else:
|
|
fifo_path = os_helper.TESTFN
|
|
os_helper.unlink(fifo_path)
|
|
self.addCleanup(os_helper.unlink, fifo_path)
|
|
try:
|
|
posix.mkfifo(fifo_path, stat.S_IRUSR | stat.S_IWUSR)
|
|
except PermissionError as e:
|
|
self.skipTest('posix.mkfifo(): %s' % e)
|
|
self.assertTrue(stat.S_ISFIFO(posix.stat(fifo_path).st_mode))
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'mknod') and hasattr(stat, 'S_IFIFO'),
|
|
"don't have mknod()/S_IFIFO")
|
|
def test_mknod(self):
|
|
# Test using mknod() to create a FIFO (the only use specified
|
|
# by POSIX).
|
|
os_helper.unlink(os_helper.TESTFN)
|
|
mode = stat.S_IFIFO | stat.S_IRUSR | stat.S_IWUSR
|
|
try:
|
|
posix.mknod(os_helper.TESTFN, mode, 0)
|
|
except OSError as e:
|
|
# Some old systems don't allow unprivileged users to use
|
|
# mknod(), or only support creating device nodes.
|
|
self.assertIn(e.errno, (errno.EPERM, errno.EINVAL, errno.EACCES))
|
|
else:
|
|
self.assertTrue(stat.S_ISFIFO(posix.stat(os_helper.TESTFN).st_mode))
|
|
|
|
# Keyword arguments are also supported
|
|
os_helper.unlink(os_helper.TESTFN)
|
|
try:
|
|
posix.mknod(path=os_helper.TESTFN, mode=mode, device=0,
|
|
dir_fd=None)
|
|
except OSError as e:
|
|
self.assertIn(e.errno, (errno.EPERM, errno.EINVAL, errno.EACCES))
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'makedev'), 'test needs posix.makedev()')
|
|
def test_makedev(self):
|
|
st = posix.stat(os_helper.TESTFN)
|
|
dev = st.st_dev
|
|
self.assertIsInstance(dev, int)
|
|
self.assertGreaterEqual(dev, 0)
|
|
|
|
major = posix.major(dev)
|
|
self.assertIsInstance(major, int)
|
|
self.assertGreaterEqual(major, 0)
|
|
self.assertEqual(posix.major(dev), major)
|
|
self.assertRaises(TypeError, posix.major, float(dev))
|
|
self.assertRaises(TypeError, posix.major)
|
|
for x in -2, 2**64, -2**63-1:
|
|
self.assertRaises((ValueError, OverflowError), posix.major, x)
|
|
|
|
minor = posix.minor(dev)
|
|
self.assertIsInstance(minor, int)
|
|
self.assertGreaterEqual(minor, 0)
|
|
self.assertEqual(posix.minor(dev), minor)
|
|
self.assertRaises(TypeError, posix.minor, float(dev))
|
|
self.assertRaises(TypeError, posix.minor)
|
|
for x in -2, 2**64, -2**63-1:
|
|
self.assertRaises((ValueError, OverflowError), posix.minor, x)
|
|
|
|
self.assertEqual(posix.makedev(major, minor), dev)
|
|
self.assertRaises(TypeError, posix.makedev, float(major), minor)
|
|
self.assertRaises(TypeError, posix.makedev, major, float(minor))
|
|
self.assertRaises(TypeError, posix.makedev, major)
|
|
self.assertRaises(TypeError, posix.makedev)
|
|
for x in -2, 2**32, 2**64, -2**63-1:
|
|
self.assertRaises((ValueError, OverflowError), posix.makedev, x, minor)
|
|
self.assertRaises((ValueError, OverflowError), posix.makedev, major, x)
|
|
|
|
if sys.platform == 'linux':
|
|
NODEV = -1
|
|
self.assertEqual(posix.major(NODEV), NODEV)
|
|
self.assertEqual(posix.minor(NODEV), NODEV)
|
|
self.assertEqual(posix.makedev(NODEV, NODEV), NODEV)
|
|
|
|
def _test_all_chown_common(self, chown_func, first_param, stat_func):
|
|
"""Common code for chown, fchown and lchown tests."""
|
|
def check_stat(uid, gid):
|
|
if stat_func is not None:
|
|
stat = stat_func(first_param)
|
|
self.assertEqual(stat.st_uid, uid)
|
|
self.assertEqual(stat.st_gid, gid)
|
|
uid = os.getuid()
|
|
gid = os.getgid()
|
|
# test a successful chown call
|
|
chown_func(first_param, uid, gid)
|
|
check_stat(uid, gid)
|
|
chown_func(first_param, -1, gid)
|
|
check_stat(uid, gid)
|
|
chown_func(first_param, uid, -1)
|
|
check_stat(uid, gid)
|
|
|
|
if sys.platform == "vxworks":
|
|
# On VxWorks, root user id is 1 and 0 means no login user:
|
|
# both are super users.
|
|
is_root = (uid in (0, 1))
|
|
else:
|
|
is_root = (uid == 0)
|
|
if support.is_emscripten:
|
|
# Emscripten getuid() / geteuid() always return 0 (root), but
|
|
# cannot chown uid/gid to random value.
|
|
pass
|
|
elif is_root:
|
|
# Try an amusingly large uid/gid to make sure we handle
|
|
# large unsigned values. (chown lets you use any
|
|
# uid/gid you like, even if they aren't defined.)
|
|
#
|
|
# On VxWorks uid_t is defined as unsigned short. A big
|
|
# value greater than 65535 will result in underflow error.
|
|
#
|
|
# This problem keeps coming up:
|
|
# http://bugs.python.org/issue1747858
|
|
# http://bugs.python.org/issue4591
|
|
# http://bugs.python.org/issue15301
|
|
# Hopefully the fix in 4591 fixes it for good!
|
|
#
|
|
# This part of the test only runs when run as root.
|
|
# Only scary people run their tests as root.
|
|
|
|
big_value = (2**31 if sys.platform != "vxworks" else 2**15)
|
|
chown_func(first_param, big_value, big_value)
|
|
check_stat(big_value, big_value)
|
|
chown_func(first_param, -1, -1)
|
|
check_stat(big_value, big_value)
|
|
chown_func(first_param, uid, gid)
|
|
check_stat(uid, gid)
|
|
elif platform.system() in ('HP-UX', 'SunOS'):
|
|
# HP-UX and Solaris can allow a non-root user to chown() to root
|
|
# (issue #5113)
|
|
raise unittest.SkipTest("Skipping because of non-standard chown() "
|
|
"behavior")
|
|
else:
|
|
# non-root cannot chown to root, raises OSError
|
|
self.assertRaises(OSError, chown_func, first_param, 0, 0)
|
|
check_stat(uid, gid)
|
|
self.assertRaises(OSError, chown_func, first_param, 0, -1)
|
|
check_stat(uid, gid)
|
|
if hasattr(os, 'getgroups'):
|
|
if 0 not in os.getgroups():
|
|
self.assertRaises(OSError, chown_func, first_param, -1, 0)
|
|
check_stat(uid, gid)
|
|
# test illegal types
|
|
for t in str, float:
|
|
self.assertRaises(TypeError, chown_func, first_param, t(uid), gid)
|
|
check_stat(uid, gid)
|
|
self.assertRaises(TypeError, chown_func, first_param, uid, t(gid))
|
|
check_stat(uid, gid)
|
|
|
|
@unittest.skipUnless(hasattr(os, "chown"), "requires os.chown()")
|
|
@unittest.skipIf(support.is_emscripten, "getgid() is a stub")
|
|
def test_chown(self):
|
|
# raise an OSError if the file does not exist
|
|
os.unlink(os_helper.TESTFN)
|
|
self.assertRaises(OSError, posix.chown, os_helper.TESTFN, -1, -1)
|
|
|
|
# re-create the file
|
|
os_helper.create_empty_file(os_helper.TESTFN)
|
|
self._test_all_chown_common(posix.chown, os_helper.TESTFN, posix.stat)
|
|
|
|
@os_helper.skip_unless_working_chmod
|
|
@unittest.skipUnless(hasattr(posix, 'fchown'), "test needs os.fchown()")
|
|
@unittest.skipIf(support.is_emscripten, "getgid() is a stub")
|
|
def test_fchown(self):
|
|
os.unlink(os_helper.TESTFN)
|
|
|
|
# re-create the file
|
|
test_file = open(os_helper.TESTFN, 'w')
|
|
try:
|
|
fd = test_file.fileno()
|
|
self._test_all_chown_common(posix.fchown, fd,
|
|
getattr(posix, 'fstat', None))
|
|
finally:
|
|
test_file.close()
|
|
|
|
@os_helper.skip_unless_working_chmod
|
|
@unittest.skipUnless(hasattr(posix, 'lchown'), "test needs os.lchown()")
|
|
def test_lchown(self):
|
|
os.unlink(os_helper.TESTFN)
|
|
# create a symlink
|
|
os.symlink(_DUMMY_SYMLINK, os_helper.TESTFN)
|
|
self._test_all_chown_common(posix.lchown, os_helper.TESTFN,
|
|
getattr(posix, 'lstat', None))
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'chdir'), 'test needs posix.chdir()')
|
|
def test_chdir(self):
|
|
posix.chdir(os.curdir)
|
|
self.assertRaises(OSError, posix.chdir, os_helper.TESTFN)
|
|
|
|
def test_listdir(self):
|
|
self.assertIn(os_helper.TESTFN, posix.listdir(os.curdir))
|
|
|
|
def test_listdir_default(self):
|
|
# When listdir is called without argument,
|
|
# it's the same as listdir(os.curdir).
|
|
self.assertIn(os_helper.TESTFN, posix.listdir())
|
|
|
|
def test_listdir_bytes(self):
|
|
# When listdir is called with a bytes object,
|
|
# the returned strings are of type bytes.
|
|
self.assertIn(os.fsencode(os_helper.TESTFN), posix.listdir(b'.'))
|
|
|
|
def test_listdir_bytes_like(self):
|
|
for cls in bytearray, memoryview:
|
|
with self.assertRaises(TypeError):
|
|
posix.listdir(cls(b'.'))
|
|
|
|
@unittest.skipUnless(posix.listdir in os.supports_fd,
|
|
"test needs fd support for posix.listdir()")
|
|
def test_listdir_fd(self):
|
|
f = posix.open(posix.getcwd(), posix.O_RDONLY)
|
|
self.addCleanup(posix.close, f)
|
|
self.assertEqual(
|
|
sorted(posix.listdir('.')),
|
|
sorted(posix.listdir(f))
|
|
)
|
|
# Check that the fd offset was reset (issue #13739)
|
|
self.assertEqual(
|
|
sorted(posix.listdir('.')),
|
|
sorted(posix.listdir(f))
|
|
)
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'access'), 'test needs posix.access()')
|
|
def test_access(self):
|
|
self.assertTrue(posix.access(os_helper.TESTFN, os.R_OK))
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'umask'), 'test needs posix.umask()')
|
|
def test_umask(self):
|
|
old_mask = posix.umask(0)
|
|
self.assertIsInstance(old_mask, int)
|
|
posix.umask(old_mask)
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'strerror'),
|
|
'test needs posix.strerror()')
|
|
def test_strerror(self):
|
|
self.assertTrue(posix.strerror(0))
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'pipe'), 'test needs posix.pipe()')
|
|
def test_pipe(self):
|
|
reader, writer = posix.pipe()
|
|
os.close(reader)
|
|
os.close(writer)
|
|
|
|
@unittest.skipUnless(hasattr(os, 'pipe2'), "test needs os.pipe2()")
|
|
@support.requires_linux_version(2, 6, 27)
|
|
def test_pipe2(self):
|
|
self.assertRaises(TypeError, os.pipe2, 'DEADBEEF')
|
|
self.assertRaises(TypeError, os.pipe2, 0, 0)
|
|
|
|
# try calling with flags = 0, like os.pipe()
|
|
r, w = os.pipe2(0)
|
|
os.close(r)
|
|
os.close(w)
|
|
|
|
# test flags
|
|
r, w = os.pipe2(os.O_CLOEXEC|os.O_NONBLOCK)
|
|
self.addCleanup(os.close, r)
|
|
self.addCleanup(os.close, w)
|
|
self.assertFalse(os.get_inheritable(r))
|
|
self.assertFalse(os.get_inheritable(w))
|
|
self.assertFalse(os.get_blocking(r))
|
|
self.assertFalse(os.get_blocking(w))
|
|
# try reading from an empty pipe: this should fail, not block
|
|
self.assertRaises(OSError, os.read, r, 1)
|
|
# try a write big enough to fill-up the pipe: this should either
|
|
# fail or perform a partial write, not block
|
|
try:
|
|
os.write(w, b'x' * support.PIPE_MAX_SIZE)
|
|
except OSError:
|
|
pass
|
|
|
|
@support.cpython_only
|
|
@unittest.skipUnless(hasattr(os, 'pipe2'), "test needs os.pipe2()")
|
|
@support.requires_linux_version(2, 6, 27)
|
|
def test_pipe2_c_limits(self):
|
|
# Issue 15989
|
|
import _testcapi
|
|
self.assertRaises(OverflowError, os.pipe2, _testcapi.INT_MAX + 1)
|
|
self.assertRaises(OverflowError, os.pipe2, _testcapi.UINT_MAX + 1)
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'utime'), 'test needs posix.utime()')
|
|
def test_utime(self):
|
|
now = time.time()
|
|
posix.utime(os_helper.TESTFN, None)
|
|
self.assertRaises(TypeError, posix.utime,
|
|
os_helper.TESTFN, (None, None))
|
|
self.assertRaises(TypeError, posix.utime,
|
|
os_helper.TESTFN, (now, None))
|
|
self.assertRaises(TypeError, posix.utime,
|
|
os_helper.TESTFN, (None, now))
|
|
posix.utime(os_helper.TESTFN, (int(now), int(now)))
|
|
posix.utime(os_helper.TESTFN, (now, now))
|
|
|
|
def check_chmod(self, chmod_func, target, **kwargs):
|
|
closefd = not isinstance(target, int)
|
|
mode = os.stat(target).st_mode
|
|
try:
|
|
new_mode = mode & ~(stat.S_IWOTH | stat.S_IWGRP | stat.S_IWUSR)
|
|
chmod_func(target, new_mode, **kwargs)
|
|
self.assertEqual(os.stat(target).st_mode, new_mode)
|
|
if stat.S_ISREG(mode):
|
|
try:
|
|
with open(target, 'wb+', closefd=closefd):
|
|
pass
|
|
except PermissionError:
|
|
pass
|
|
new_mode = mode | (stat.S_IWOTH | stat.S_IWGRP | stat.S_IWUSR)
|
|
chmod_func(target, new_mode, **kwargs)
|
|
self.assertEqual(os.stat(target).st_mode, new_mode)
|
|
if stat.S_ISREG(mode):
|
|
with open(target, 'wb+', closefd=closefd):
|
|
pass
|
|
finally:
|
|
chmod_func(target, mode)
|
|
|
|
@os_helper.skip_unless_working_chmod
|
|
def test_chmod_file(self):
|
|
self.check_chmod(posix.chmod, os_helper.TESTFN)
|
|
|
|
def tempdir(self):
|
|
target = os_helper.TESTFN + 'd'
|
|
posix.mkdir(target)
|
|
self.addCleanup(posix.rmdir, target)
|
|
return target
|
|
|
|
@os_helper.skip_unless_working_chmod
|
|
def test_chmod_dir(self):
|
|
target = self.tempdir()
|
|
self.check_chmod(posix.chmod, target)
|
|
|
|
@os_helper.skip_unless_working_chmod
|
|
def test_fchmod_file(self):
|
|
with open(os_helper.TESTFN, 'wb+') as f:
|
|
self.check_chmod(posix.fchmod, f.fileno())
|
|
self.check_chmod(posix.chmod, f.fileno())
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'lchmod'), 'test needs os.lchmod()')
|
|
def test_lchmod_file(self):
|
|
self.check_chmod(posix.lchmod, os_helper.TESTFN)
|
|
self.check_chmod(posix.chmod, os_helper.TESTFN, follow_symlinks=False)
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'lchmod'), 'test needs os.lchmod()')
|
|
def test_lchmod_dir(self):
|
|
target = self.tempdir()
|
|
self.check_chmod(posix.lchmod, target)
|
|
self.check_chmod(posix.chmod, target, follow_symlinks=False)
|
|
|
|
def check_chmod_link(self, chmod_func, target, link, **kwargs):
|
|
target_mode = os.stat(target).st_mode
|
|
link_mode = os.lstat(link).st_mode
|
|
try:
|
|
new_mode = target_mode & ~(stat.S_IWOTH | stat.S_IWGRP | stat.S_IWUSR)
|
|
chmod_func(link, new_mode, **kwargs)
|
|
self.assertEqual(os.stat(target).st_mode, new_mode)
|
|
self.assertEqual(os.lstat(link).st_mode, link_mode)
|
|
new_mode = target_mode | (stat.S_IWOTH | stat.S_IWGRP | stat.S_IWUSR)
|
|
chmod_func(link, new_mode, **kwargs)
|
|
self.assertEqual(os.stat(target).st_mode, new_mode)
|
|
self.assertEqual(os.lstat(link).st_mode, link_mode)
|
|
finally:
|
|
posix.chmod(target, target_mode)
|
|
|
|
def check_lchmod_link(self, chmod_func, target, link, **kwargs):
|
|
target_mode = os.stat(target).st_mode
|
|
link_mode = os.lstat(link).st_mode
|
|
new_mode = link_mode & ~(stat.S_IWOTH | stat.S_IWGRP | stat.S_IWUSR)
|
|
chmod_func(link, new_mode, **kwargs)
|
|
self.assertEqual(os.stat(target).st_mode, target_mode)
|
|
self.assertEqual(os.lstat(link).st_mode, new_mode)
|
|
new_mode = link_mode | (stat.S_IWOTH | stat.S_IWGRP | stat.S_IWUSR)
|
|
chmod_func(link, new_mode, **kwargs)
|
|
self.assertEqual(os.stat(target).st_mode, target_mode)
|
|
self.assertEqual(os.lstat(link).st_mode, new_mode)
|
|
|
|
@os_helper.skip_unless_symlink
|
|
def test_chmod_file_symlink(self):
|
|
target = os_helper.TESTFN
|
|
link = os_helper.TESTFN + '-link'
|
|
os.symlink(target, link)
|
|
self.addCleanup(posix.unlink, link)
|
|
if os.name == 'nt':
|
|
self.check_lchmod_link(posix.chmod, target, link)
|
|
else:
|
|
self.check_chmod_link(posix.chmod, target, link)
|
|
self.check_chmod_link(posix.chmod, target, link, follow_symlinks=True)
|
|
|
|
@os_helper.skip_unless_symlink
|
|
def test_chmod_dir_symlink(self):
|
|
target = self.tempdir()
|
|
link = os_helper.TESTFN + '-link'
|
|
os.symlink(target, link, target_is_directory=True)
|
|
self.addCleanup(posix.unlink, link)
|
|
if os.name == 'nt':
|
|
self.check_lchmod_link(posix.chmod, target, link)
|
|
else:
|
|
self.check_chmod_link(posix.chmod, target, link)
|
|
self.check_chmod_link(posix.chmod, target, link, follow_symlinks=True)
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'lchmod'), 'test needs os.lchmod()')
|
|
@os_helper.skip_unless_symlink
|
|
def test_lchmod_file_symlink(self):
|
|
target = os_helper.TESTFN
|
|
link = os_helper.TESTFN + '-link'
|
|
os.symlink(target, link)
|
|
self.addCleanup(posix.unlink, link)
|
|
self.check_lchmod_link(posix.chmod, target, link, follow_symlinks=False)
|
|
self.check_lchmod_link(posix.lchmod, target, link)
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'lchmod'), 'test needs os.lchmod()')
|
|
@os_helper.skip_unless_symlink
|
|
def test_lchmod_dir_symlink(self):
|
|
target = self.tempdir()
|
|
link = os_helper.TESTFN + '-link'
|
|
os.symlink(target, link)
|
|
self.addCleanup(posix.unlink, link)
|
|
self.check_lchmod_link(posix.chmod, target, link, follow_symlinks=False)
|
|
self.check_lchmod_link(posix.lchmod, target, link)
|
|
|
|
def _test_chflags_regular_file(self, chflags_func, target_file, **kwargs):
|
|
st = os.stat(target_file)
|
|
self.assertTrue(hasattr(st, 'st_flags'))
|
|
|
|
# ZFS returns EOPNOTSUPP when attempting to set flag UF_IMMUTABLE.
|
|
flags = st.st_flags | stat.UF_IMMUTABLE
|
|
try:
|
|
chflags_func(target_file, flags, **kwargs)
|
|
except OSError as err:
|
|
if err.errno != errno.EOPNOTSUPP:
|
|
raise
|
|
msg = 'chflag UF_IMMUTABLE not supported by underlying fs'
|
|
self.skipTest(msg)
|
|
|
|
try:
|
|
new_st = os.stat(target_file)
|
|
self.assertEqual(st.st_flags | stat.UF_IMMUTABLE, new_st.st_flags)
|
|
try:
|
|
fd = open(target_file, 'w+')
|
|
except OSError as e:
|
|
self.assertEqual(e.errno, errno.EPERM)
|
|
finally:
|
|
posix.chflags(target_file, st.st_flags)
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'chflags'), 'test needs os.chflags()')
|
|
def test_chflags(self):
|
|
self._test_chflags_regular_file(posix.chflags, os_helper.TESTFN)
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'lchflags'), 'test needs os.lchflags()')
|
|
def test_lchflags_regular_file(self):
|
|
self._test_chflags_regular_file(posix.lchflags, os_helper.TESTFN)
|
|
self._test_chflags_regular_file(posix.chflags, os_helper.TESTFN,
|
|
follow_symlinks=False)
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'lchflags'), 'test needs os.lchflags()')
|
|
def test_lchflags_symlink(self):
|
|
testfn_st = os.stat(os_helper.TESTFN)
|
|
|
|
self.assertTrue(hasattr(testfn_st, 'st_flags'))
|
|
|
|
self.addCleanup(os_helper.unlink, _DUMMY_SYMLINK)
|
|
os.symlink(os_helper.TESTFN, _DUMMY_SYMLINK)
|
|
dummy_symlink_st = os.lstat(_DUMMY_SYMLINK)
|
|
|
|
def chflags_nofollow(path, flags):
|
|
return posix.chflags(path, flags, follow_symlinks=False)
|
|
|
|
for fn in (posix.lchflags, chflags_nofollow):
|
|
# ZFS returns EOPNOTSUPP when attempting to set flag UF_IMMUTABLE.
|
|
flags = dummy_symlink_st.st_flags | stat.UF_IMMUTABLE
|
|
try:
|
|
fn(_DUMMY_SYMLINK, flags)
|
|
except OSError as err:
|
|
if err.errno != errno.EOPNOTSUPP:
|
|
raise
|
|
msg = 'chflag UF_IMMUTABLE not supported by underlying fs'
|
|
self.skipTest(msg)
|
|
try:
|
|
new_testfn_st = os.stat(os_helper.TESTFN)
|
|
new_dummy_symlink_st = os.lstat(_DUMMY_SYMLINK)
|
|
|
|
self.assertEqual(testfn_st.st_flags, new_testfn_st.st_flags)
|
|
self.assertEqual(dummy_symlink_st.st_flags | stat.UF_IMMUTABLE,
|
|
new_dummy_symlink_st.st_flags)
|
|
finally:
|
|
fn(_DUMMY_SYMLINK, dummy_symlink_st.st_flags)
|
|
|
|
def test_environ(self):
|
|
if os.name == "nt":
|
|
item_type = str
|
|
else:
|
|
item_type = bytes
|
|
for k, v in posix.environ.items():
|
|
self.assertEqual(type(k), item_type)
|
|
self.assertEqual(type(v), item_type)
|
|
|
|
def test_putenv(self):
|
|
with self.assertRaises(ValueError):
|
|
os.putenv('FRUIT\0VEGETABLE', 'cabbage')
|
|
with self.assertRaises(ValueError):
|
|
os.putenv('FRUIT', 'orange\0VEGETABLE=cabbage')
|
|
with self.assertRaises(ValueError):
|
|
os.putenv('FRUIT=ORANGE', 'lemon')
|
|
if os.name == 'posix':
|
|
with self.assertRaises(ValueError):
|
|
os.putenv(b'FRUIT\0VEGETABLE', b'cabbage')
|
|
with self.assertRaises(ValueError):
|
|
os.putenv(b'FRUIT', b'orange\0VEGETABLE=cabbage')
|
|
with self.assertRaises(ValueError):
|
|
os.putenv(b'FRUIT=ORANGE', b'lemon')
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'getcwd'), 'test needs posix.getcwd()')
|
|
def test_getcwd_long_pathnames(self):
|
|
dirname = 'getcwd-test-directory-0123456789abcdef-01234567890abcdef'
|
|
curdir = os.getcwd()
|
|
base_path = os.path.abspath(os_helper.TESTFN) + '.getcwd'
|
|
|
|
try:
|
|
os.mkdir(base_path)
|
|
os.chdir(base_path)
|
|
except:
|
|
# Just returning nothing instead of the SkipTest exception, because
|
|
# the test results in Error in that case. Is that ok?
|
|
# raise unittest.SkipTest("cannot create directory for testing")
|
|
return
|
|
|
|
def _create_and_do_getcwd(dirname, current_path_length = 0):
|
|
try:
|
|
os.mkdir(dirname)
|
|
except:
|
|
raise unittest.SkipTest("mkdir cannot create directory sufficiently deep for getcwd test")
|
|
|
|
os.chdir(dirname)
|
|
try:
|
|
os.getcwd()
|
|
if current_path_length < 1027:
|
|
_create_and_do_getcwd(dirname, current_path_length + len(dirname) + 1)
|
|
finally:
|
|
os.chdir('..')
|
|
os.rmdir(dirname)
|
|
|
|
_create_and_do_getcwd(dirname)
|
|
|
|
finally:
|
|
os.chdir(curdir)
|
|
os_helper.rmtree(base_path)
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'getgrouplist'), "test needs posix.getgrouplist()")
|
|
@unittest.skipUnless(hasattr(pwd, 'getpwuid'), "test needs pwd.getpwuid()")
|
|
@unittest.skipUnless(hasattr(os, 'getuid'), "test needs os.getuid()")
|
|
def test_getgrouplist(self):
|
|
user = pwd.getpwuid(os.getuid())[0]
|
|
group = pwd.getpwuid(os.getuid())[3]
|
|
self.assertIn(group, posix.getgrouplist(user, group))
|
|
|
|
|
|
@unittest.skipUnless(hasattr(os, 'getegid'), "test needs os.getegid()")
|
|
@unittest.skipUnless(hasattr(os, 'popen'), "test needs os.popen()")
|
|
@support.requires_subprocess()
|
|
def test_getgroups(self):
|
|
with os.popen('id -G 2>/dev/null') as idg:
|
|
groups = idg.read().strip()
|
|
ret = idg.close()
|
|
|
|
try:
|
|
idg_groups = set(int(g) for g in groups.split())
|
|
except ValueError:
|
|
idg_groups = set()
|
|
if ret is not None or not idg_groups:
|
|
raise unittest.SkipTest("need working 'id -G'")
|
|
|
|
# Issues 16698: OS X ABIs prior to 10.6 have limits on getgroups()
|
|
if sys.platform == 'darwin':
|
|
import sysconfig
|
|
dt = sysconfig.get_config_var('MACOSX_DEPLOYMENT_TARGET') or '10.3'
|
|
if tuple(int(n) for n in dt.split('.')[0:2]) < (10, 6):
|
|
raise unittest.SkipTest("getgroups(2) is broken prior to 10.6")
|
|
|
|
# 'id -G' and 'os.getgroups()' should return the same
|
|
# groups, ignoring order, duplicates, and the effective gid.
|
|
# #10822/#26944 - It is implementation defined whether
|
|
# posix.getgroups() includes the effective gid.
|
|
symdiff = idg_groups.symmetric_difference(posix.getgroups())
|
|
self.assertTrue(not symdiff or symdiff == {posix.getegid()})
|
|
|
|
@unittest.skipUnless(hasattr(signal, 'SIGCHLD'), 'CLD_XXXX be placed in si_code for a SIGCHLD signal')
|
|
@unittest.skipUnless(hasattr(os, 'waitid_result'), "test needs os.waitid_result")
|
|
def test_cld_xxxx_constants(self):
|
|
os.CLD_EXITED
|
|
os.CLD_KILLED
|
|
os.CLD_DUMPED
|
|
os.CLD_TRAPPED
|
|
os.CLD_STOPPED
|
|
os.CLD_CONTINUED
|
|
|
|
requires_sched_h = unittest.skipUnless(hasattr(posix, 'sched_yield'),
|
|
"don't have scheduling support")
|
|
requires_sched_affinity = unittest.skipUnless(hasattr(posix, 'sched_setaffinity'),
|
|
"don't have sched affinity support")
|
|
|
|
@requires_sched_h
|
|
def test_sched_yield(self):
|
|
# This has no error conditions (at least on Linux).
|
|
posix.sched_yield()
|
|
|
|
@requires_sched_h
|
|
@unittest.skipUnless(hasattr(posix, 'sched_get_priority_max'),
|
|
"requires sched_get_priority_max()")
|
|
def test_sched_priority(self):
|
|
# Round-robin usually has interesting priorities.
|
|
pol = posix.SCHED_RR
|
|
lo = posix.sched_get_priority_min(pol)
|
|
hi = posix.sched_get_priority_max(pol)
|
|
self.assertIsInstance(lo, int)
|
|
self.assertIsInstance(hi, int)
|
|
self.assertGreaterEqual(hi, lo)
|
|
# Apple platforms return 15 without checking the argument.
|
|
if not is_apple:
|
|
self.assertRaises(OSError, posix.sched_get_priority_min, -23)
|
|
self.assertRaises(OSError, posix.sched_get_priority_max, -23)
|
|
|
|
@requires_sched
|
|
def test_get_and_set_scheduler_and_param(self):
|
|
possible_schedulers = [sched for name, sched in posix.__dict__.items()
|
|
if name.startswith("SCHED_")]
|
|
mine = posix.sched_getscheduler(0)
|
|
self.assertIn(mine, possible_schedulers)
|
|
try:
|
|
parent = posix.sched_getscheduler(os.getppid())
|
|
except PermissionError:
|
|
# POSIX specifies EPERM, but Android returns EACCES. Both errno
|
|
# values are mapped to PermissionError.
|
|
pass
|
|
else:
|
|
self.assertIn(parent, possible_schedulers)
|
|
self.assertRaises(OSError, posix.sched_getscheduler, -1)
|
|
self.assertRaises(OSError, posix.sched_getparam, -1)
|
|
param = posix.sched_getparam(0)
|
|
self.assertIsInstance(param.sched_priority, int)
|
|
|
|
# POSIX states that calling sched_setparam() or sched_setscheduler() on
|
|
# a process with a scheduling policy other than SCHED_FIFO or SCHED_RR
|
|
# is implementation-defined: NetBSD and FreeBSD can return EINVAL.
|
|
if not sys.platform.startswith(('freebsd', 'netbsd')):
|
|
try:
|
|
posix.sched_setscheduler(0, mine, param)
|
|
posix.sched_setparam(0, param)
|
|
except PermissionError:
|
|
pass
|
|
self.assertRaises(OSError, posix.sched_setparam, -1, param)
|
|
|
|
self.assertRaises(OSError, posix.sched_setscheduler, -1, mine, param)
|
|
self.assertRaises(TypeError, posix.sched_setscheduler, 0, mine, None)
|
|
self.assertRaises(TypeError, posix.sched_setparam, 0, 43)
|
|
param = posix.sched_param(None)
|
|
self.assertRaises(TypeError, posix.sched_setparam, 0, param)
|
|
large = 214748364700
|
|
param = posix.sched_param(large)
|
|
self.assertRaises(OverflowError, posix.sched_setparam, 0, param)
|
|
param = posix.sched_param(sched_priority=-large)
|
|
self.assertRaises(OverflowError, posix.sched_setparam, 0, param)
|
|
|
|
@requires_sched
|
|
def test_sched_param(self):
|
|
param = posix.sched_param(1)
|
|
for proto in range(pickle.HIGHEST_PROTOCOL+1):
|
|
newparam = pickle.loads(pickle.dumps(param, proto))
|
|
self.assertEqual(newparam, param)
|
|
newparam = copy.copy(param)
|
|
self.assertIsNot(newparam, param)
|
|
self.assertEqual(newparam, param)
|
|
newparam = copy.deepcopy(param)
|
|
self.assertIsNot(newparam, param)
|
|
self.assertEqual(newparam, param)
|
|
newparam = copy.replace(param)
|
|
self.assertIsNot(newparam, param)
|
|
self.assertEqual(newparam, param)
|
|
newparam = copy.replace(param, sched_priority=0)
|
|
self.assertNotEqual(newparam, param)
|
|
self.assertEqual(newparam.sched_priority, 0)
|
|
|
|
@unittest.skipUnless(hasattr(posix, "sched_rr_get_interval"), "no function")
|
|
def test_sched_rr_get_interval(self):
|
|
try:
|
|
interval = posix.sched_rr_get_interval(0)
|
|
except OSError as e:
|
|
# This likely means that sched_rr_get_interval is only valid for
|
|
# processes with the SCHED_RR scheduler in effect.
|
|
if e.errno != errno.EINVAL:
|
|
raise
|
|
self.skipTest("only works on SCHED_RR processes")
|
|
self.assertIsInstance(interval, float)
|
|
# Reasonable constraints, I think.
|
|
self.assertGreaterEqual(interval, 0.)
|
|
self.assertLess(interval, 1.)
|
|
|
|
@requires_sched_affinity
|
|
def test_sched_getaffinity(self):
|
|
mask = posix.sched_getaffinity(0)
|
|
self.assertIsInstance(mask, set)
|
|
self.assertGreaterEqual(len(mask), 1)
|
|
if not sys.platform.startswith("freebsd"):
|
|
# bpo-47205: does not raise OSError on FreeBSD
|
|
self.assertRaises(OSError, posix.sched_getaffinity, -1)
|
|
for cpu in mask:
|
|
self.assertIsInstance(cpu, int)
|
|
self.assertGreaterEqual(cpu, 0)
|
|
self.assertLess(cpu, 1 << 32)
|
|
|
|
@requires_sched_affinity
|
|
def test_sched_setaffinity(self):
|
|
mask = posix.sched_getaffinity(0)
|
|
self.addCleanup(posix.sched_setaffinity, 0, list(mask))
|
|
|
|
if len(mask) > 1:
|
|
# Empty masks are forbidden
|
|
mask.pop()
|
|
posix.sched_setaffinity(0, mask)
|
|
self.assertEqual(posix.sched_getaffinity(0), mask)
|
|
|
|
try:
|
|
posix.sched_setaffinity(0, [])
|
|
# gh-117061: On RHEL9, sched_setaffinity(0, []) does not fail
|
|
except OSError:
|
|
# sched_setaffinity() manual page documents EINVAL error
|
|
# when the mask is empty.
|
|
pass
|
|
|
|
self.assertRaises(ValueError, posix.sched_setaffinity, 0, [-10])
|
|
self.assertRaises(ValueError, posix.sched_setaffinity, 0, map(int, "0X"))
|
|
self.assertRaises(OverflowError, posix.sched_setaffinity, 0, [1<<128])
|
|
if not sys.platform.startswith("freebsd"):
|
|
# bpo-47205: does not raise OSError on FreeBSD
|
|
self.assertRaises(OSError, posix.sched_setaffinity, -1, mask)
|
|
|
|
@unittest.skipIf(support.is_wasi, "No dynamic linking on WASI")
|
|
@unittest.skipUnless(os.name == 'posix', "POSIX-only test")
|
|
def test_rtld_constants(self):
|
|
# check presence of major RTLD_* constants
|
|
posix.RTLD_LAZY
|
|
posix.RTLD_NOW
|
|
posix.RTLD_GLOBAL
|
|
posix.RTLD_LOCAL
|
|
|
|
@unittest.skipUnless(hasattr(os, 'SEEK_HOLE'),
|
|
"test needs an OS that reports file holes")
|
|
def test_fs_holes(self):
|
|
# Even if the filesystem doesn't report holes,
|
|
# if the OS supports it the SEEK_* constants
|
|
# will be defined and will have a consistent
|
|
# behaviour:
|
|
# os.SEEK_DATA = current position
|
|
# os.SEEK_HOLE = end of file position
|
|
with open(os_helper.TESTFN, 'r+b') as fp:
|
|
fp.write(b"hello")
|
|
fp.flush()
|
|
size = fp.tell()
|
|
fno = fp.fileno()
|
|
try :
|
|
for i in range(size):
|
|
self.assertEqual(i, os.lseek(fno, i, os.SEEK_DATA))
|
|
self.assertLessEqual(size, os.lseek(fno, i, os.SEEK_HOLE))
|
|
self.assertRaises(OSError, os.lseek, fno, size, os.SEEK_DATA)
|
|
self.assertRaises(OSError, os.lseek, fno, size, os.SEEK_HOLE)
|
|
except OSError :
|
|
# Some OSs claim to support SEEK_HOLE/SEEK_DATA
|
|
# but it is not true.
|
|
# For instance:
|
|
# http://lists.freebsd.org/pipermail/freebsd-amd64/2012-January/014332.html
|
|
raise unittest.SkipTest("OSError raised!")
|
|
|
|
def test_path_error2(self):
|
|
"""
|
|
Test functions that call path_error2(), providing two filenames in their exceptions.
|
|
"""
|
|
for name in ("rename", "replace", "link"):
|
|
function = getattr(os, name, None)
|
|
if function is None:
|
|
continue
|
|
|
|
for dst in ("noodly2", os_helper.TESTFN):
|
|
try:
|
|
function('doesnotexistfilename', dst)
|
|
except OSError as e:
|
|
self.assertIn("'doesnotexistfilename' -> '{}'".format(dst), str(e))
|
|
break
|
|
else:
|
|
self.fail("No valid path_error2() test for os." + name)
|
|
|
|
def test_path_with_null_character(self):
|
|
fn = os_helper.TESTFN
|
|
fn_with_NUL = fn + '\0'
|
|
self.addCleanup(os_helper.unlink, fn)
|
|
os_helper.unlink(fn)
|
|
fd = None
|
|
try:
|
|
with self.assertRaises(ValueError):
|
|
fd = os.open(fn_with_NUL, os.O_WRONLY | os.O_CREAT) # raises
|
|
finally:
|
|
if fd is not None:
|
|
os.close(fd)
|
|
self.assertFalse(os.path.exists(fn))
|
|
self.assertRaises(ValueError, os.mkdir, fn_with_NUL)
|
|
self.assertFalse(os.path.exists(fn))
|
|
open(fn, 'wb').close()
|
|
self.assertRaises(ValueError, os.stat, fn_with_NUL)
|
|
|
|
def test_path_with_null_byte(self):
|
|
fn = os.fsencode(os_helper.TESTFN)
|
|
fn_with_NUL = fn + b'\0'
|
|
self.addCleanup(os_helper.unlink, fn)
|
|
os_helper.unlink(fn)
|
|
fd = None
|
|
try:
|
|
with self.assertRaises(ValueError):
|
|
fd = os.open(fn_with_NUL, os.O_WRONLY | os.O_CREAT) # raises
|
|
finally:
|
|
if fd is not None:
|
|
os.close(fd)
|
|
self.assertFalse(os.path.exists(fn))
|
|
self.assertRaises(ValueError, os.mkdir, fn_with_NUL)
|
|
self.assertFalse(os.path.exists(fn))
|
|
open(fn, 'wb').close()
|
|
self.assertRaises(ValueError, os.stat, fn_with_NUL)
|
|
|
|
@unittest.skipUnless(hasattr(os, "pidfd_open"), "pidfd_open unavailable")
|
|
def test_pidfd_open(self):
|
|
with self.assertRaises(OSError) as cm:
|
|
os.pidfd_open(-1)
|
|
if cm.exception.errno == errno.ENOSYS:
|
|
self.skipTest("system does not support pidfd_open")
|
|
if isinstance(cm.exception, PermissionError):
|
|
self.skipTest(f"pidfd_open syscall blocked: {cm.exception!r}")
|
|
self.assertEqual(cm.exception.errno, errno.EINVAL)
|
|
os.close(os.pidfd_open(os.getpid(), 0))
|
|
|
|
|
|
# tests for the posix *at functions follow
|
|
class TestPosixDirFd(unittest.TestCase):
|
|
count = 0
|
|
|
|
@contextmanager
|
|
def prepare(self):
|
|
TestPosixDirFd.count += 1
|
|
name = f'{os_helper.TESTFN}_{self.count}'
|
|
base_dir = f'{os_helper.TESTFN}_{self.count}base'
|
|
posix.mkdir(base_dir)
|
|
self.addCleanup(posix.rmdir, base_dir)
|
|
fullname = os.path.join(base_dir, name)
|
|
assert not os.path.exists(fullname)
|
|
with os_helper.open_dir_fd(base_dir) as dir_fd:
|
|
yield (dir_fd, name, fullname)
|
|
|
|
@contextmanager
|
|
def prepare_file(self):
|
|
with self.prepare() as (dir_fd, name, fullname):
|
|
os_helper.create_empty_file(fullname)
|
|
self.addCleanup(posix.unlink, fullname)
|
|
yield (dir_fd, name, fullname)
|
|
|
|
@unittest.skipUnless(os.access in os.supports_dir_fd, "test needs dir_fd support for os.access()")
|
|
def test_access_dir_fd(self):
|
|
with self.prepare_file() as (dir_fd, name, fullname):
|
|
self.assertTrue(posix.access(name, os.R_OK, dir_fd=dir_fd))
|
|
|
|
@unittest.skipUnless(os.chmod in os.supports_dir_fd, "test needs dir_fd support in os.chmod()")
|
|
def test_chmod_dir_fd(self):
|
|
with self.prepare_file() as (dir_fd, name, fullname):
|
|
posix.chmod(fullname, stat.S_IRUSR)
|
|
posix.chmod(name, stat.S_IRUSR | stat.S_IWUSR, dir_fd=dir_fd)
|
|
s = posix.stat(fullname)
|
|
self.assertEqual(s.st_mode & stat.S_IRWXU,
|
|
stat.S_IRUSR | stat.S_IWUSR)
|
|
|
|
@unittest.skipUnless(hasattr(os, 'chown') and (os.chown in os.supports_dir_fd),
|
|
"test needs dir_fd support in os.chown()")
|
|
@unittest.skipIf(support.is_emscripten, "getgid() is a stub")
|
|
def test_chown_dir_fd(self):
|
|
with self.prepare_file() as (dir_fd, name, fullname):
|
|
posix.chown(name, os.getuid(), os.getgid(), dir_fd=dir_fd)
|
|
|
|
@unittest.skipUnless(os.stat in os.supports_dir_fd, "test needs dir_fd support in os.stat()")
|
|
def test_stat_dir_fd(self):
|
|
with self.prepare() as (dir_fd, name, fullname):
|
|
with open(fullname, 'w') as outfile:
|
|
outfile.write("testline\n")
|
|
self.addCleanup(posix.unlink, fullname)
|
|
|
|
s1 = posix.stat(fullname)
|
|
s2 = posix.stat(name, dir_fd=dir_fd)
|
|
self.assertEqual(s1, s2)
|
|
s2 = posix.stat(fullname, dir_fd=None)
|
|
self.assertEqual(s1, s2)
|
|
|
|
self.assertRaisesRegex(TypeError, 'should be integer or None, not',
|
|
posix.stat, name, dir_fd=posix.getcwd())
|
|
self.assertRaisesRegex(TypeError, 'should be integer or None, not',
|
|
posix.stat, name, dir_fd=float(dir_fd))
|
|
self.assertRaises(OverflowError,
|
|
posix.stat, name, dir_fd=10**20)
|
|
|
|
for fd in False, True:
|
|
with self.assertWarnsRegex(RuntimeWarning,
|
|
'bool is used as a file descriptor') as cm:
|
|
with self.assertRaises(OSError):
|
|
posix.stat('nonexisting', dir_fd=fd)
|
|
self.assertEqual(cm.filename, __file__)
|
|
|
|
@unittest.skipUnless(os.utime in os.supports_dir_fd, "test needs dir_fd support in os.utime()")
|
|
def test_utime_dir_fd(self):
|
|
with self.prepare_file() as (dir_fd, name, fullname):
|
|
now = time.time()
|
|
posix.utime(name, None, dir_fd=dir_fd)
|
|
posix.utime(name, dir_fd=dir_fd)
|
|
self.assertRaises(TypeError, posix.utime, name,
|
|
now, dir_fd=dir_fd)
|
|
self.assertRaises(TypeError, posix.utime, name,
|
|
(None, None), dir_fd=dir_fd)
|
|
self.assertRaises(TypeError, posix.utime, name,
|
|
(now, None), dir_fd=dir_fd)
|
|
self.assertRaises(TypeError, posix.utime, name,
|
|
(None, now), dir_fd=dir_fd)
|
|
self.assertRaises(TypeError, posix.utime, name,
|
|
(now, "x"), dir_fd=dir_fd)
|
|
posix.utime(name, (int(now), int(now)), dir_fd=dir_fd)
|
|
posix.utime(name, (now, now), dir_fd=dir_fd)
|
|
posix.utime(name,
|
|
(int(now), int((now - int(now)) * 1e9)), dir_fd=dir_fd)
|
|
posix.utime(name, dir_fd=dir_fd,
|
|
times=(int(now), int((now - int(now)) * 1e9)))
|
|
|
|
# try dir_fd and follow_symlinks together
|
|
if os.utime in os.supports_follow_symlinks:
|
|
try:
|
|
posix.utime(name, follow_symlinks=False, dir_fd=dir_fd)
|
|
except ValueError:
|
|
# whoops! using both together not supported on this platform.
|
|
pass
|
|
|
|
@unittest.skipIf(
|
|
support.is_wasi,
|
|
"WASI: symlink following on path_link is not supported"
|
|
)
|
|
@unittest.skipUnless(
|
|
hasattr(os, "link") and os.link in os.supports_dir_fd,
|
|
"test needs dir_fd support in os.link()"
|
|
)
|
|
def test_link_dir_fd(self):
|
|
with self.prepare_file() as (dir_fd, name, fullname), \
|
|
self.prepare() as (dir_fd2, linkname, fulllinkname):
|
|
try:
|
|
posix.link(name, linkname, src_dir_fd=dir_fd, dst_dir_fd=dir_fd2)
|
|
except PermissionError as e:
|
|
self.skipTest('posix.link(): %s' % e)
|
|
self.addCleanup(posix.unlink, fulllinkname)
|
|
# should have same inodes
|
|
self.assertEqual(posix.stat(fullname)[1],
|
|
posix.stat(fulllinkname)[1])
|
|
|
|
@unittest.skipUnless(os.mkdir in os.supports_dir_fd, "test needs dir_fd support in os.mkdir()")
|
|
def test_mkdir_dir_fd(self):
|
|
with self.prepare() as (dir_fd, name, fullname):
|
|
posix.mkdir(name, dir_fd=dir_fd)
|
|
self.addCleanup(posix.rmdir, fullname)
|
|
posix.stat(fullname) # should not raise exception
|
|
|
|
@unittest.skipUnless(hasattr(os, 'mknod')
|
|
and (os.mknod in os.supports_dir_fd)
|
|
and hasattr(stat, 'S_IFIFO'),
|
|
"test requires both stat.S_IFIFO and dir_fd support for os.mknod()")
|
|
def test_mknod_dir_fd(self):
|
|
# Test using mknodat() to create a FIFO (the only use specified
|
|
# by POSIX).
|
|
with self.prepare() as (dir_fd, name, fullname):
|
|
mode = stat.S_IFIFO | stat.S_IRUSR | stat.S_IWUSR
|
|
try:
|
|
posix.mknod(name, mode, 0, dir_fd=dir_fd)
|
|
except OSError as e:
|
|
# Some old systems don't allow unprivileged users to use
|
|
# mknod(), or only support creating device nodes.
|
|
self.assertIn(e.errno, (errno.EPERM, errno.EINVAL, errno.EACCES))
|
|
else:
|
|
self.addCleanup(posix.unlink, fullname)
|
|
self.assertTrue(stat.S_ISFIFO(posix.stat(fullname).st_mode))
|
|
|
|
@unittest.skipUnless(os.open in os.supports_dir_fd, "test needs dir_fd support in os.open()")
|
|
def test_open_dir_fd(self):
|
|
with self.prepare() as (dir_fd, name, fullname):
|
|
with open(fullname, 'wb') as outfile:
|
|
outfile.write(b"testline\n")
|
|
self.addCleanup(posix.unlink, fullname)
|
|
fd = posix.open(name, posix.O_RDONLY, dir_fd=dir_fd)
|
|
try:
|
|
res = posix.read(fd, 9)
|
|
self.assertEqual(b"testline\n", res)
|
|
finally:
|
|
posix.close(fd)
|
|
|
|
@unittest.skipUnless(hasattr(os, 'readlink') and (os.readlink in os.supports_dir_fd),
|
|
"test needs dir_fd support in os.readlink()")
|
|
def test_readlink_dir_fd(self):
|
|
with self.prepare() as (dir_fd, name, fullname):
|
|
os.symlink('symlink', fullname)
|
|
self.addCleanup(posix.unlink, fullname)
|
|
self.assertEqual(posix.readlink(name, dir_fd=dir_fd), 'symlink')
|
|
|
|
@unittest.skipUnless(os.rename in os.supports_dir_fd, "test needs dir_fd support in os.rename()")
|
|
def test_rename_dir_fd(self):
|
|
with self.prepare_file() as (dir_fd, name, fullname), \
|
|
self.prepare() as (dir_fd2, name2, fullname2):
|
|
posix.rename(name, name2,
|
|
src_dir_fd=dir_fd, dst_dir_fd=dir_fd2)
|
|
posix.stat(fullname2) # should not raise exception
|
|
posix.rename(fullname2, fullname)
|
|
|
|
@unittest.skipUnless(os.symlink in os.supports_dir_fd, "test needs dir_fd support in os.symlink()")
|
|
def test_symlink_dir_fd(self):
|
|
with self.prepare() as (dir_fd, name, fullname):
|
|
posix.symlink('symlink', name, dir_fd=dir_fd)
|
|
self.addCleanup(posix.unlink, fullname)
|
|
self.assertEqual(posix.readlink(fullname), 'symlink')
|
|
|
|
@unittest.skipUnless(os.unlink in os.supports_dir_fd, "test needs dir_fd support in os.unlink()")
|
|
def test_unlink_dir_fd(self):
|
|
with self.prepare() as (dir_fd, name, fullname):
|
|
os_helper.create_empty_file(fullname)
|
|
posix.stat(fullname) # should not raise exception
|
|
try:
|
|
posix.unlink(name, dir_fd=dir_fd)
|
|
self.assertRaises(OSError, posix.stat, fullname)
|
|
except:
|
|
self.addCleanup(posix.unlink, fullname)
|
|
raise
|
|
|
|
@unittest.skipUnless(hasattr(os, 'mkfifo') and os.mkfifo in os.supports_dir_fd, "test needs dir_fd support in os.mkfifo()")
|
|
def test_mkfifo_dir_fd(self):
|
|
with self.prepare() as (dir_fd, name, fullname):
|
|
try:
|
|
posix.mkfifo(name, stat.S_IRUSR | stat.S_IWUSR, dir_fd=dir_fd)
|
|
except PermissionError as e:
|
|
self.skipTest('posix.mkfifo(): %s' % e)
|
|
self.addCleanup(posix.unlink, fullname)
|
|
self.assertTrue(stat.S_ISFIFO(posix.stat(fullname).st_mode))
|
|
|
|
|
|
class PosixGroupsTester(unittest.TestCase):
|
|
|
|
def setUp(self):
|
|
if posix.getuid() != 0:
|
|
raise unittest.SkipTest("not enough privileges")
|
|
if not hasattr(posix, 'getgroups'):
|
|
raise unittest.SkipTest("need posix.getgroups")
|
|
if sys.platform == 'darwin':
|
|
raise unittest.SkipTest("getgroups(2) is broken on OSX")
|
|
self.saved_groups = posix.getgroups()
|
|
|
|
def tearDown(self):
|
|
if hasattr(posix, 'setgroups'):
|
|
posix.setgroups(self.saved_groups)
|
|
elif hasattr(posix, 'initgroups'):
|
|
name = pwd.getpwuid(posix.getuid()).pw_name
|
|
posix.initgroups(name, self.saved_groups[0])
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'initgroups'),
|
|
"test needs posix.initgroups()")
|
|
def test_initgroups(self):
|
|
# find missing group
|
|
|
|
g = max(self.saved_groups or [0]) + 1
|
|
name = pwd.getpwuid(posix.getuid()).pw_name
|
|
posix.initgroups(name, g)
|
|
self.assertIn(g, posix.getgroups())
|
|
|
|
@unittest.skipUnless(hasattr(posix, 'setgroups'),
|
|
"test needs posix.setgroups()")
|
|
def test_setgroups(self):
|
|
for groups in [[0], list(range(16))]:
|
|
posix.setgroups(groups)
|
|
self.assertListEqual(groups, posix.getgroups())
|
|
|
|
|
|
class _PosixSpawnMixin:
|
|
# Program which does nothing and exits with status 0 (success)
|
|
NOOP_PROGRAM = (sys.executable, '-I', '-S', '-c', 'pass')
|
|
spawn_func = None
|
|
|
|
def python_args(self, *args):
|
|
# Disable site module to avoid side effects. For example,
|
|
# on Fedora 28, if the HOME environment variable is not set,
|
|
# site._getuserbase() calls pwd.getpwuid() which opens
|
|
# /var/lib/sss/mc/passwd but then leaves the file open which makes
|
|
# test_close_file() to fail.
|
|
return (sys.executable, '-I', '-S', *args)
|
|
|
|
def test_returns_pid(self):
|
|
pidfile = os_helper.TESTFN
|
|
self.addCleanup(os_helper.unlink, pidfile)
|
|
script = f"""if 1:
|
|
import os
|
|
with open({pidfile!r}, "w") as pidfile:
|
|
pidfile.write(str(os.getpid()))
|
|
"""
|
|
args = self.python_args('-c', script)
|
|
pid = self.spawn_func(args[0], args, os.environ)
|
|
support.wait_process(pid, exitcode=0)
|
|
with open(pidfile, encoding="utf-8") as f:
|
|
self.assertEqual(f.read(), str(pid))
|
|
|
|
def test_no_such_executable(self):
|
|
no_such_executable = 'no_such_executable'
|
|
try:
|
|
pid = self.spawn_func(no_such_executable,
|
|
[no_such_executable],
|
|
os.environ)
|
|
# bpo-35794: PermissionError can be raised if there are
|
|
# directories in the $PATH that are not accessible.
|
|
except (FileNotFoundError, PermissionError) as exc:
|
|
self.assertEqual(exc.filename, no_such_executable)
|
|
else:
|
|
pid2, status = os.waitpid(pid, 0)
|
|
self.assertEqual(pid2, pid)
|
|
self.assertNotEqual(status, 0)
|
|
|
|
def test_specify_environment(self):
|
|
envfile = os_helper.TESTFN
|
|
self.addCleanup(os_helper.unlink, envfile)
|
|
script = f"""if 1:
|
|
import os
|
|
with open({envfile!r}, "w", encoding="utf-8") as envfile:
|
|
envfile.write(os.environ['foo'])
|
|
"""
|
|
args = self.python_args('-c', script)
|
|
pid = self.spawn_func(args[0], args,
|
|
{**os.environ, 'foo': 'bar'})
|
|
support.wait_process(pid, exitcode=0)
|
|
with open(envfile, encoding="utf-8") as f:
|
|
self.assertEqual(f.read(), 'bar')
|
|
|
|
def test_none_file_actions(self):
|
|
pid = self.spawn_func(
|
|
self.NOOP_PROGRAM[0],
|
|
self.NOOP_PROGRAM,
|
|
os.environ,
|
|
file_actions=None
|
|
)
|
|
support.wait_process(pid, exitcode=0)
|
|
|
|
def test_empty_file_actions(self):
|
|
pid = self.spawn_func(
|
|
self.NOOP_PROGRAM[0],
|
|
self.NOOP_PROGRAM,
|
|
os.environ,
|
|
file_actions=[]
|
|
)
|
|
support.wait_process(pid, exitcode=0)
|
|
|
|
def test_resetids_explicit_default(self):
|
|
pid = self.spawn_func(
|
|
sys.executable,
|
|
[sys.executable, '-c', 'pass'],
|
|
os.environ,
|
|
resetids=False
|
|
)
|
|
support.wait_process(pid, exitcode=0)
|
|
|
|
def test_resetids(self):
|
|
pid = self.spawn_func(
|
|
sys.executable,
|
|
[sys.executable, '-c', 'pass'],
|
|
os.environ,
|
|
resetids=True
|
|
)
|
|
support.wait_process(pid, exitcode=0)
|
|
|
|
def test_setpgroup(self):
|
|
pid = self.spawn_func(
|
|
sys.executable,
|
|
[sys.executable, '-c', 'pass'],
|
|
os.environ,
|
|
setpgroup=os.getpgrp()
|
|
)
|
|
support.wait_process(pid, exitcode=0)
|
|
|
|
def test_setpgroup_wrong_type(self):
|
|
with self.assertRaises(TypeError):
|
|
self.spawn_func(sys.executable,
|
|
[sys.executable, "-c", "pass"],
|
|
os.environ, setpgroup="023")
|
|
|
|
@unittest.skipUnless(hasattr(signal, 'pthread_sigmask'),
|
|
'need signal.pthread_sigmask()')
|
|
def test_setsigmask(self):
|
|
code = textwrap.dedent("""\
|
|
import signal
|
|
signal.raise_signal(signal.SIGUSR1)""")
|
|
|
|
pid = self.spawn_func(
|
|
sys.executable,
|
|
[sys.executable, '-c', code],
|
|
os.environ,
|
|
setsigmask=[signal.SIGUSR1]
|
|
)
|
|
support.wait_process(pid, exitcode=0)
|
|
|
|
def test_setsigmask_wrong_type(self):
|
|
with self.assertRaises(TypeError):
|
|
self.spawn_func(sys.executable,
|
|
[sys.executable, "-c", "pass"],
|
|
os.environ, setsigmask=34)
|
|
with self.assertRaises(TypeError):
|
|
self.spawn_func(sys.executable,
|
|
[sys.executable, "-c", "pass"],
|
|
os.environ, setsigmask=["j"])
|
|
with self.assertRaises(ValueError):
|
|
self.spawn_func(sys.executable,
|
|
[sys.executable, "-c", "pass"],
|
|
os.environ, setsigmask=[signal.NSIG,
|
|
signal.NSIG+1])
|
|
|
|
def test_setsid(self):
|
|
rfd, wfd = os.pipe()
|
|
self.addCleanup(os.close, rfd)
|
|
try:
|
|
os.set_inheritable(wfd, True)
|
|
|
|
code = textwrap.dedent(f"""
|
|
import os
|
|
fd = {wfd}
|
|
sid = os.getsid(0)
|
|
os.write(fd, str(sid).encode())
|
|
""")
|
|
|
|
try:
|
|
pid = self.spawn_func(sys.executable,
|
|
[sys.executable, "-c", code],
|
|
os.environ, setsid=True)
|
|
except NotImplementedError as exc:
|
|
self.skipTest(f"setsid is not supported: {exc!r}")
|
|
except PermissionError as exc:
|
|
self.skipTest(f"setsid failed with: {exc!r}")
|
|
finally:
|
|
os.close(wfd)
|
|
|
|
support.wait_process(pid, exitcode=0)
|
|
|
|
output = os.read(rfd, 100)
|
|
child_sid = int(output)
|
|
parent_sid = os.getsid(os.getpid())
|
|
self.assertNotEqual(parent_sid, child_sid)
|
|
|
|
@unittest.skipUnless(hasattr(signal, 'pthread_sigmask'),
|
|
'need signal.pthread_sigmask()')
|
|
def test_setsigdef(self):
|
|
original_handler = signal.signal(signal.SIGUSR1, signal.SIG_IGN)
|
|
code = textwrap.dedent("""\
|
|
import signal
|
|
signal.raise_signal(signal.SIGUSR1)""")
|
|
try:
|
|
pid = self.spawn_func(
|
|
sys.executable,
|
|
[sys.executable, '-c', code],
|
|
os.environ,
|
|
setsigdef=[signal.SIGUSR1]
|
|
)
|
|
finally:
|
|
signal.signal(signal.SIGUSR1, original_handler)
|
|
|
|
support.wait_process(pid, exitcode=-signal.SIGUSR1)
|
|
|
|
def test_setsigdef_wrong_type(self):
|
|
with self.assertRaises(TypeError):
|
|
self.spawn_func(sys.executable,
|
|
[sys.executable, "-c", "pass"],
|
|
os.environ, setsigdef=34)
|
|
with self.assertRaises(TypeError):
|
|
self.spawn_func(sys.executable,
|
|
[sys.executable, "-c", "pass"],
|
|
os.environ, setsigdef=["j"])
|
|
with self.assertRaises(ValueError):
|
|
self.spawn_func(sys.executable,
|
|
[sys.executable, "-c", "pass"],
|
|
os.environ, setsigdef=[signal.NSIG, signal.NSIG+1])
|
|
|
|
@requires_sched
|
|
@unittest.skipIf(sys.platform.startswith(('freebsd', 'netbsd')),
|
|
"bpo-34685: test can fail on BSD")
|
|
def test_setscheduler_only_param(self):
|
|
policy = os.sched_getscheduler(0)
|
|
priority = os.sched_get_priority_min(policy)
|
|
code = textwrap.dedent(f"""\
|
|
import os, sys
|
|
if os.sched_getscheduler(0) != {policy}:
|
|
sys.exit(101)
|
|
if os.sched_getparam(0).sched_priority != {priority}:
|
|
sys.exit(102)""")
|
|
pid = self.spawn_func(
|
|
sys.executable,
|
|
[sys.executable, '-c', code],
|
|
os.environ,
|
|
scheduler=(None, os.sched_param(priority))
|
|
)
|
|
support.wait_process(pid, exitcode=0)
|
|
|
|
@requires_sched
|
|
@unittest.skipIf(sys.platform.startswith(('freebsd', 'netbsd')),
|
|
"bpo-34685: test can fail on BSD")
|
|
def test_setscheduler_with_policy(self):
|
|
policy = os.sched_getscheduler(0)
|
|
priority = os.sched_get_priority_min(policy)
|
|
code = textwrap.dedent(f"""\
|
|
import os, sys
|
|
if os.sched_getscheduler(0) != {policy}:
|
|
sys.exit(101)
|
|
if os.sched_getparam(0).sched_priority != {priority}:
|
|
sys.exit(102)""")
|
|
pid = self.spawn_func(
|
|
sys.executable,
|
|
[sys.executable, '-c', code],
|
|
os.environ,
|
|
scheduler=(policy, os.sched_param(priority))
|
|
)
|
|
support.wait_process(pid, exitcode=0)
|
|
|
|
def test_multiple_file_actions(self):
|
|
file_actions = [
|
|
(os.POSIX_SPAWN_OPEN, 3, os.path.realpath(__file__), os.O_RDONLY, 0),
|
|
(os.POSIX_SPAWN_CLOSE, 0),
|
|
(os.POSIX_SPAWN_DUP2, 1, 4),
|
|
]
|
|
pid = self.spawn_func(self.NOOP_PROGRAM[0],
|
|
self.NOOP_PROGRAM,
|
|
os.environ,
|
|
file_actions=file_actions)
|
|
support.wait_process(pid, exitcode=0)
|
|
|
|
def test_bad_file_actions(self):
|
|
args = self.NOOP_PROGRAM
|
|
with self.assertRaises(TypeError):
|
|
self.spawn_func(args[0], args, os.environ,
|
|
file_actions=[None])
|
|
with self.assertRaises(TypeError):
|
|
self.spawn_func(args[0], args, os.environ,
|
|
file_actions=[()])
|
|
with self.assertRaises(TypeError):
|
|
self.spawn_func(args[0], args, os.environ,
|
|
file_actions=[(None,)])
|
|
with self.assertRaises(TypeError):
|
|
self.spawn_func(args[0], args, os.environ,
|
|
file_actions=[(12345,)])
|
|
with self.assertRaises(TypeError):
|
|
self.spawn_func(args[0], args, os.environ,
|
|
file_actions=[(os.POSIX_SPAWN_CLOSE,)])
|
|
with self.assertRaises(TypeError):
|
|
self.spawn_func(args[0], args, os.environ,
|
|
file_actions=[(os.POSIX_SPAWN_CLOSE, 1, 2)])
|
|
with self.assertRaises(TypeError):
|
|
self.spawn_func(args[0], args, os.environ,
|
|
file_actions=[(os.POSIX_SPAWN_CLOSE, None)])
|
|
with self.assertRaises(ValueError):
|
|
self.spawn_func(args[0], args, os.environ,
|
|
file_actions=[(os.POSIX_SPAWN_OPEN,
|
|
3, __file__ + '\0',
|
|
os.O_RDONLY, 0)])
|
|
|
|
def test_open_file(self):
|
|
outfile = os_helper.TESTFN
|
|
self.addCleanup(os_helper.unlink, outfile)
|
|
script = """if 1:
|
|
import sys
|
|
sys.stdout.write("hello")
|
|
"""
|
|
file_actions = [
|
|
(os.POSIX_SPAWN_OPEN, 1, outfile,
|
|
os.O_WRONLY | os.O_CREAT | os.O_TRUNC,
|
|
stat.S_IRUSR | stat.S_IWUSR),
|
|
]
|
|
args = self.python_args('-c', script)
|
|
pid = self.spawn_func(args[0], args, os.environ,
|
|
file_actions=file_actions)
|
|
|
|
support.wait_process(pid, exitcode=0)
|
|
with open(outfile, encoding="utf-8") as f:
|
|
self.assertEqual(f.read(), 'hello')
|
|
|
|
def test_close_file(self):
|
|
closefile = os_helper.TESTFN
|
|
self.addCleanup(os_helper.unlink, closefile)
|
|
script = f"""if 1:
|
|
import os
|
|
try:
|
|
os.fstat(0)
|
|
except OSError as e:
|
|
with open({closefile!r}, 'w', encoding='utf-8') as closefile:
|
|
closefile.write('is closed %d' % e.errno)
|
|
"""
|
|
args = self.python_args('-c', script)
|
|
pid = self.spawn_func(args[0], args, os.environ,
|
|
file_actions=[(os.POSIX_SPAWN_CLOSE, 0)])
|
|
|
|
support.wait_process(pid, exitcode=0)
|
|
with open(closefile, encoding="utf-8") as f:
|
|
self.assertEqual(f.read(), 'is closed %d' % errno.EBADF)
|
|
|
|
def test_dup2(self):
|
|
dupfile = os_helper.TESTFN
|
|
self.addCleanup(os_helper.unlink, dupfile)
|
|
script = """if 1:
|
|
import sys
|
|
sys.stdout.write("hello")
|
|
"""
|
|
with open(dupfile, "wb") as childfile:
|
|
file_actions = [
|
|
(os.POSIX_SPAWN_DUP2, childfile.fileno(), 1),
|
|
]
|
|
args = self.python_args('-c', script)
|
|
pid = self.spawn_func(args[0], args, os.environ,
|
|
file_actions=file_actions)
|
|
support.wait_process(pid, exitcode=0)
|
|
with open(dupfile, encoding="utf-8") as f:
|
|
self.assertEqual(f.read(), 'hello')
|
|
|
|
|
|
@unittest.skipUnless(hasattr(os, 'posix_spawn'), "test needs os.posix_spawn")
|
|
@support.requires_subprocess()
|
|
class TestPosixSpawn(unittest.TestCase, _PosixSpawnMixin):
|
|
spawn_func = getattr(posix, 'posix_spawn', None)
|
|
|
|
|
|
@unittest.skipUnless(hasattr(os, 'posix_spawnp'), "test needs os.posix_spawnp")
|
|
@support.requires_subprocess()
|
|
class TestPosixSpawnP(unittest.TestCase, _PosixSpawnMixin):
|
|
spawn_func = getattr(posix, 'posix_spawnp', None)
|
|
|
|
@os_helper.skip_unless_symlink
|
|
def test_posix_spawnp(self):
|
|
# Use a symlink to create a program in its own temporary directory
|
|
temp_dir = tempfile.mkdtemp()
|
|
self.addCleanup(os_helper.rmtree, temp_dir)
|
|
|
|
program = 'posix_spawnp_test_program.exe'
|
|
program_fullpath = os.path.join(temp_dir, program)
|
|
os.symlink(sys.executable, program_fullpath)
|
|
|
|
try:
|
|
path = os.pathsep.join((temp_dir, os.environ['PATH']))
|
|
except KeyError:
|
|
path = temp_dir # PATH is not set
|
|
|
|
spawn_args = (program, '-I', '-S', '-c', 'pass')
|
|
code = textwrap.dedent("""
|
|
import os
|
|
from test import support
|
|
|
|
args = %a
|
|
pid = os.posix_spawnp(args[0], args, os.environ)
|
|
|
|
support.wait_process(pid, exitcode=0)
|
|
""" % (spawn_args,))
|
|
|
|
# Use a subprocess to test os.posix_spawnp() with a modified PATH
|
|
# environment variable: posix_spawnp() uses the current environment
|
|
# to locate the program, not its environment argument.
|
|
args = ('-c', code)
|
|
assert_python_ok(*args, PATH=path)
|
|
|
|
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@unittest.skipUnless(sys.platform == "darwin", "test weak linking on macOS")
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class TestPosixWeaklinking(unittest.TestCase):
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# These test cases verify that weak linking support on macOS works
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# as expected. These cases only test new behaviour introduced by weak linking,
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# regular behaviour is tested by the normal test cases.
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#
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# See the section on Weak Linking in Mac/README.txt for more information.
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def setUp(self):
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import sysconfig
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import platform
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config_vars = sysconfig.get_config_vars()
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self.available = { nm for nm in config_vars if nm.startswith("HAVE_") and config_vars[nm] }
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self.mac_ver = tuple(int(part) for part in platform.mac_ver()[0].split("."))
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def _verify_available(self, name):
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if name not in self.available:
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raise unittest.SkipTest(f"{name} not weak-linked")
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def test_pwritev(self):
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self._verify_available("HAVE_PWRITEV")
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if self.mac_ver >= (10, 16):
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self.assertTrue(hasattr(os, "pwritev"), "os.pwritev is not available")
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self.assertTrue(hasattr(os, "preadv"), "os.readv is not available")
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else:
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self.assertFalse(hasattr(os, "pwritev"), "os.pwritev is available")
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self.assertFalse(hasattr(os, "preadv"), "os.readv is available")
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def test_stat(self):
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self._verify_available("HAVE_FSTATAT")
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if self.mac_ver >= (10, 10):
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self.assertIn("HAVE_FSTATAT", posix._have_functions)
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else:
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self.assertNotIn("HAVE_FSTATAT", posix._have_functions)
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with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"):
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os.stat("file", dir_fd=0)
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def test_ptsname_r(self):
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self._verify_available("HAVE_PTSNAME_R")
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if self.mac_ver >= (10, 13, 4):
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self.assertIn("HAVE_PTSNAME_R", posix._have_functions)
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else:
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self.assertNotIn("HAVE_PTSNAME_R", posix._have_functions)
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def test_access(self):
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self._verify_available("HAVE_FACCESSAT")
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if self.mac_ver >= (10, 10):
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self.assertIn("HAVE_FACCESSAT", posix._have_functions)
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else:
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self.assertNotIn("HAVE_FACCESSAT", posix._have_functions)
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with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"):
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os.access("file", os.R_OK, dir_fd=0)
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with self.assertRaisesRegex(NotImplementedError, "follow_symlinks unavailable"):
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os.access("file", os.R_OK, follow_symlinks=False)
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with self.assertRaisesRegex(NotImplementedError, "effective_ids unavailable"):
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os.access("file", os.R_OK, effective_ids=True)
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def test_chmod(self):
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self._verify_available("HAVE_FCHMODAT")
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if self.mac_ver >= (10, 10):
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self.assertIn("HAVE_FCHMODAT", posix._have_functions)
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else:
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self.assertNotIn("HAVE_FCHMODAT", posix._have_functions)
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self.assertIn("HAVE_LCHMOD", posix._have_functions)
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with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"):
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os.chmod("file", 0o644, dir_fd=0)
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def test_chown(self):
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self._verify_available("HAVE_FCHOWNAT")
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if self.mac_ver >= (10, 10):
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self.assertIn("HAVE_FCHOWNAT", posix._have_functions)
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else:
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self.assertNotIn("HAVE_FCHOWNAT", posix._have_functions)
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self.assertIn("HAVE_LCHOWN", posix._have_functions)
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with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"):
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os.chown("file", 0, 0, dir_fd=0)
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def test_link(self):
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self._verify_available("HAVE_LINKAT")
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if self.mac_ver >= (10, 10):
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self.assertIn("HAVE_LINKAT", posix._have_functions)
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else:
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self.assertNotIn("HAVE_LINKAT", posix._have_functions)
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with self.assertRaisesRegex(NotImplementedError, "src_dir_fd unavailable"):
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os.link("source", "target", src_dir_fd=0)
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with self.assertRaisesRegex(NotImplementedError, "dst_dir_fd unavailable"):
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os.link("source", "target", dst_dir_fd=0)
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with self.assertRaisesRegex(NotImplementedError, "src_dir_fd unavailable"):
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os.link("source", "target", src_dir_fd=0, dst_dir_fd=0)
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# issue 41355: !HAVE_LINKAT code path ignores the follow_symlinks flag
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with os_helper.temp_dir() as base_path:
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link_path = os.path.join(base_path, "link")
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target_path = os.path.join(base_path, "target")
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source_path = os.path.join(base_path, "source")
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with open(source_path, "w") as fp:
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fp.write("data")
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os.symlink("target", link_path)
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# Calling os.link should fail in the link(2) call, and
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# should not reject *follow_symlinks* (to match the
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# behaviour you'd get when building on a platform without
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# linkat)
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with self.assertRaises(FileExistsError):
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os.link(source_path, link_path, follow_symlinks=True)
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with self.assertRaises(FileExistsError):
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os.link(source_path, link_path, follow_symlinks=False)
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def test_listdir_scandir(self):
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self._verify_available("HAVE_FDOPENDIR")
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if self.mac_ver >= (10, 10):
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self.assertIn("HAVE_FDOPENDIR", posix._have_functions)
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else:
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self.assertNotIn("HAVE_FDOPENDIR", posix._have_functions)
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with self.assertRaisesRegex(TypeError, "listdir: path should be string, bytes, os.PathLike or None, not int"):
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os.listdir(0)
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with self.assertRaisesRegex(TypeError, "scandir: path should be string, bytes, os.PathLike or None, not int"):
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os.scandir(0)
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def test_mkdir(self):
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self._verify_available("HAVE_MKDIRAT")
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if self.mac_ver >= (10, 10):
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self.assertIn("HAVE_MKDIRAT", posix._have_functions)
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else:
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self.assertNotIn("HAVE_MKDIRAT", posix._have_functions)
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with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"):
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os.mkdir("dir", dir_fd=0)
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def test_mkfifo(self):
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self._verify_available("HAVE_MKFIFOAT")
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if self.mac_ver >= (13, 0):
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self.assertIn("HAVE_MKFIFOAT", posix._have_functions)
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else:
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self.assertNotIn("HAVE_MKFIFOAT", posix._have_functions)
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with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"):
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os.mkfifo("path", dir_fd=0)
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def test_mknod(self):
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self._verify_available("HAVE_MKNODAT")
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if self.mac_ver >= (13, 0):
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self.assertIn("HAVE_MKNODAT", posix._have_functions)
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else:
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self.assertNotIn("HAVE_MKNODAT", posix._have_functions)
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with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"):
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os.mknod("path", dir_fd=0)
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def test_rename_replace(self):
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self._verify_available("HAVE_RENAMEAT")
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if self.mac_ver >= (10, 10):
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self.assertIn("HAVE_RENAMEAT", posix._have_functions)
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else:
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self.assertNotIn("HAVE_RENAMEAT", posix._have_functions)
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with self.assertRaisesRegex(NotImplementedError, "src_dir_fd and dst_dir_fd unavailable"):
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os.rename("a", "b", src_dir_fd=0)
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with self.assertRaisesRegex(NotImplementedError, "src_dir_fd and dst_dir_fd unavailable"):
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os.rename("a", "b", dst_dir_fd=0)
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with self.assertRaisesRegex(NotImplementedError, "src_dir_fd and dst_dir_fd unavailable"):
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os.replace("a", "b", src_dir_fd=0)
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with self.assertRaisesRegex(NotImplementedError, "src_dir_fd and dst_dir_fd unavailable"):
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os.replace("a", "b", dst_dir_fd=0)
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def test_unlink_rmdir(self):
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self._verify_available("HAVE_UNLINKAT")
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if self.mac_ver >= (10, 10):
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self.assertIn("HAVE_UNLINKAT", posix._have_functions)
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else:
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self.assertNotIn("HAVE_UNLINKAT", posix._have_functions)
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with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"):
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os.unlink("path", dir_fd=0)
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with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"):
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os.rmdir("path", dir_fd=0)
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def test_open(self):
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self._verify_available("HAVE_OPENAT")
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if self.mac_ver >= (10, 10):
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self.assertIn("HAVE_OPENAT", posix._have_functions)
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else:
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self.assertNotIn("HAVE_OPENAT", posix._have_functions)
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with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"):
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os.open("path", os.O_RDONLY, dir_fd=0)
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def test_readlink(self):
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self._verify_available("HAVE_READLINKAT")
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if self.mac_ver >= (10, 10):
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self.assertIn("HAVE_READLINKAT", posix._have_functions)
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else:
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self.assertNotIn("HAVE_READLINKAT", posix._have_functions)
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with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"):
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os.readlink("path", dir_fd=0)
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def test_symlink(self):
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self._verify_available("HAVE_SYMLINKAT")
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if self.mac_ver >= (10, 10):
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self.assertIn("HAVE_SYMLINKAT", posix._have_functions)
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else:
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self.assertNotIn("HAVE_SYMLINKAT", posix._have_functions)
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with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"):
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os.symlink("a", "b", dir_fd=0)
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def test_utime(self):
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self._verify_available("HAVE_FUTIMENS")
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self._verify_available("HAVE_UTIMENSAT")
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if self.mac_ver >= (10, 13):
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self.assertIn("HAVE_FUTIMENS", posix._have_functions)
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self.assertIn("HAVE_UTIMENSAT", posix._have_functions)
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else:
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self.assertNotIn("HAVE_FUTIMENS", posix._have_functions)
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self.assertNotIn("HAVE_UTIMENSAT", posix._have_functions)
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with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"):
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os.utime("path", dir_fd=0)
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class NamespacesTests(unittest.TestCase):
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"""Tests for os.unshare() and os.setns()."""
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@unittest.skipUnless(hasattr(os, 'unshare'), 'needs os.unshare()')
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@unittest.skipUnless(hasattr(os, 'setns'), 'needs os.setns()')
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@unittest.skipUnless(os.path.exists('/proc/self/ns/uts'), 'need /proc/self/ns/uts')
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@support.requires_linux_version(3, 0, 0)
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def test_unshare_setns(self):
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code = """if 1:
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import errno
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import os
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import sys
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fd = os.open('/proc/self/ns/uts', os.O_RDONLY)
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try:
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original = os.readlink('/proc/self/ns/uts')
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try:
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os.unshare(os.CLONE_NEWUTS)
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except OSError as e:
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if e.errno == errno.ENOSPC:
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# skip test if limit is exceeded
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sys.exit()
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raise
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new = os.readlink('/proc/self/ns/uts')
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if original == new:
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raise Exception('os.unshare failed')
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os.setns(fd, os.CLONE_NEWUTS)
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restored = os.readlink('/proc/self/ns/uts')
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if original != restored:
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raise Exception('os.setns failed')
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except PermissionError:
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# The calling process did not have the required privileges
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# for this operation
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pass
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except OSError as e:
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# Skip the test on these errors:
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# - ENOSYS: syscall not available
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# - EINVAL: kernel was not configured with the CONFIG_UTS_NS option
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# - ENOMEM: not enough memory
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if e.errno not in (errno.ENOSYS, errno.EINVAL, errno.ENOMEM):
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raise
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finally:
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os.close(fd)
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"""
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assert_python_ok("-c", code)
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def tearDownModule():
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support.reap_children()
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if __name__ == '__main__':
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unittest.main()
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