| "Test posix functions" |
| |
| from test import support |
| |
| # Skip these tests if there is no posix module. |
| posix = support.import_module('posix') |
| |
| import errno |
| import sys |
| import time |
| import os |
| import pwd |
| import shutil |
| import stat |
| import unittest |
| import warnings |
| |
| |
| class PosixTester(unittest.TestCase): |
| |
| def setUp(self): |
| # create empty file |
| fp = open(support.TESTFN, 'w+') |
| fp.close() |
| self._warnings_manager = support.check_warnings() |
| self._warnings_manager.__enter__() |
| warnings.filterwarnings('ignore', '.* potential security risk .*', |
| RuntimeWarning) |
| |
| def tearDown(self): |
| support.unlink(support.TESTFN) |
| self._warnings_manager.__exit__(None, None, None) |
| |
| def testNoArgFunctions(self): |
| # test posix functions which take no arguments and have |
| # no side-effects which we need to cleanup (e.g., fork, wait, abort) |
| NO_ARG_FUNCTIONS = [ "ctermid", "getcwd", "getcwdb", "uname", |
| "times", "getloadavg", |
| "getegid", "geteuid", "getgid", "getgroups", |
| "getpid", "getpgrp", "getppid", "getuid", |
| ] |
| |
| for name in NO_ARG_FUNCTIONS: |
| posix_func = getattr(posix, name, None) |
| if posix_func is not None: |
| posix_func() |
| self.assertRaises(TypeError, posix_func, 1) |
| |
| if hasattr(posix, 'getresuid'): |
| def test_getresuid(self): |
| user_ids = posix.getresuid() |
| self.assertEqual(len(user_ids), 3) |
| for val in user_ids: |
| self.assertGreaterEqual(val, 0) |
| |
| if hasattr(posix, 'getresgid'): |
| def test_getresgid(self): |
| group_ids = posix.getresgid() |
| self.assertEqual(len(group_ids), 3) |
| for val in group_ids: |
| self.assertGreaterEqual(val, 0) |
| |
| if hasattr(posix, 'setresuid'): |
| def test_setresuid(self): |
| current_user_ids = posix.getresuid() |
| self.assertIsNone(posix.setresuid(*current_user_ids)) |
| # -1 means don't change that value. |
| self.assertIsNone(posix.setresuid(-1, -1, -1)) |
| |
| def test_setresuid_exception(self): |
| # Don't do this test if someone is silly enough to run us as root. |
| current_user_ids = posix.getresuid() |
| if 0 not in current_user_ids: |
| new_user_ids = (current_user_ids[0]+1, -1, -1) |
| self.assertRaises(OSError, posix.setresuid, *new_user_ids) |
| |
| if hasattr(posix, 'setresgid'): |
| def test_setresgid(self): |
| current_group_ids = posix.getresgid() |
| self.assertIsNone(posix.setresgid(*current_group_ids)) |
| # -1 means don't change that value. |
| self.assertIsNone(posix.setresgid(-1, -1, -1)) |
| |
| def test_setresgid_exception(self): |
| # Don't do this test if someone is silly enough to run us as root. |
| current_group_ids = posix.getresgid() |
| if 0 not in current_group_ids: |
| new_group_ids = (current_group_ids[0]+1, -1, -1) |
| self.assertRaises(OSError, posix.setresgid, *new_group_ids) |
| |
| @unittest.skipUnless(hasattr(posix, 'initgroups'), |
| "test needs os.initgroups()") |
| def test_initgroups(self): |
| # It takes a string and an integer; check that it raises a TypeError |
| # for other argument lists. |
| self.assertRaises(TypeError, posix.initgroups) |
| self.assertRaises(TypeError, posix.initgroups, None) |
| self.assertRaises(TypeError, posix.initgroups, 3, "foo") |
| self.assertRaises(TypeError, posix.initgroups, "foo", 3, object()) |
| |
| # If a non-privileged user invokes it, it should fail with OSError |
| # EPERM. |
| if os.getuid() != 0: |
| name = pwd.getpwuid(posix.getuid()).pw_name |
| try: |
| posix.initgroups(name, 13) |
| except OSError as e: |
| self.assertEquals(e.errno, errno.EPERM) |
| else: |
| self.fail("Expected OSError to be raised by initgroups") |
| |
| def test_statvfs(self): |
| if hasattr(posix, 'statvfs'): |
| self.assertTrue(posix.statvfs(os.curdir)) |
| |
| def test_fstatvfs(self): |
| if hasattr(posix, 'fstatvfs'): |
| fp = open(support.TESTFN) |
| try: |
| self.assertTrue(posix.fstatvfs(fp.fileno())) |
| finally: |
| fp.close() |
| |
| def test_ftruncate(self): |
| if hasattr(posix, 'ftruncate'): |
| fp = open(support.TESTFN, 'w+') |
| try: |
| # we need to have some data to truncate |
| fp.write('test') |
| fp.flush() |
| posix.ftruncate(fp.fileno(), 0) |
| finally: |
| fp.close() |
| |
| def test_dup(self): |
| if hasattr(posix, 'dup'): |
| fp = open(support.TESTFN) |
| try: |
| fd = posix.dup(fp.fileno()) |
| self.assertIsInstance(fd, int) |
| os.close(fd) |
| finally: |
| fp.close() |
| |
| def test_confstr(self): |
| if hasattr(posix, 'confstr'): |
| self.assertRaises(ValueError, posix.confstr, "CS_garbage") |
| self.assertEqual(len(posix.confstr("CS_PATH")) > 0, True) |
| |
| def test_dup2(self): |
| if hasattr(posix, 'dup2'): |
| fp1 = open(support.TESTFN) |
| fp2 = open(support.TESTFN) |
| try: |
| posix.dup2(fp1.fileno(), fp2.fileno()) |
| finally: |
| fp1.close() |
| fp2.close() |
| |
| def test_osexlock(self): |
| if hasattr(posix, "O_EXLOCK"): |
| fd = os.open(support.TESTFN, |
| os.O_WRONLY|os.O_EXLOCK|os.O_CREAT) |
| self.assertRaises(OSError, os.open, support.TESTFN, |
| os.O_WRONLY|os.O_EXLOCK|os.O_NONBLOCK) |
| os.close(fd) |
| |
| if hasattr(posix, "O_SHLOCK"): |
| fd = os.open(support.TESTFN, |
| os.O_WRONLY|os.O_SHLOCK|os.O_CREAT) |
| self.assertRaises(OSError, os.open, support.TESTFN, |
| os.O_WRONLY|os.O_EXLOCK|os.O_NONBLOCK) |
| os.close(fd) |
| |
| def test_osshlock(self): |
| if hasattr(posix, "O_SHLOCK"): |
| fd1 = os.open(support.TESTFN, |
| os.O_WRONLY|os.O_SHLOCK|os.O_CREAT) |
| fd2 = os.open(support.TESTFN, |
| os.O_WRONLY|os.O_SHLOCK|os.O_CREAT) |
| os.close(fd2) |
| os.close(fd1) |
| |
| if hasattr(posix, "O_EXLOCK"): |
| fd = os.open(support.TESTFN, |
| os.O_WRONLY|os.O_SHLOCK|os.O_CREAT) |
| self.assertRaises(OSError, os.open, support.TESTFN, |
| os.O_RDONLY|os.O_EXLOCK|os.O_NONBLOCK) |
| os.close(fd) |
| |
| def test_fstat(self): |
| if hasattr(posix, 'fstat'): |
| fp = open(support.TESTFN) |
| try: |
| self.assertTrue(posix.fstat(fp.fileno())) |
| finally: |
| fp.close() |
| |
| def test_stat(self): |
| if hasattr(posix, 'stat'): |
| self.assertTrue(posix.stat(support.TESTFN)) |
| |
| @unittest.skipUnless(hasattr(posix, 'mkfifo'), "don't have mkfifo()") |
| def test_mkfifo(self): |
| support.unlink(support.TESTFN) |
| posix.mkfifo(support.TESTFN, stat.S_IRUSR | stat.S_IWUSR) |
| self.assertTrue(stat.S_ISFIFO(posix.stat(support.TESTFN).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). |
| support.unlink(support.TESTFN) |
| mode = stat.S_IFIFO | stat.S_IRUSR | stat.S_IWUSR |
| try: |
| posix.mknod(support.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)) |
| else: |
| self.assertTrue(stat.S_ISFIFO(posix.stat(support.TESTFN).st_mode)) |
| |
| def _test_all_chown_common(self, chown_func, first_param): |
| """Common code for chown, fchown and lchown tests.""" |
| if os.getuid() == 0: |
| try: |
| # Many linux distros have a nfsnobody user as MAX_UID-2 |
| # that makes a good test case for signedness issues. |
| # http://bugs.python.org/issue1747858 |
| # This part of the test only runs when run as root. |
| # Only scary people run their tests as root. |
| ent = pwd.getpwnam('nfsnobody') |
| chown_func(first_param, ent.pw_uid, ent.pw_gid) |
| except KeyError: |
| pass |
| else: |
| # non-root cannot chown to root, raises OSError |
| self.assertRaises(OSError, chown_func, |
| first_param, 0, 0) |
| # test a successful chown call |
| chown_func(first_param, os.getuid(), os.getgid()) |
| |
| @unittest.skipUnless(hasattr(posix, 'chown'), "test needs os.chown()") |
| def test_chown(self): |
| # raise an OSError if the file does not exist |
| os.unlink(support.TESTFN) |
| self.assertRaises(OSError, posix.chown, support.TESTFN, -1, -1) |
| |
| # re-create the file |
| open(support.TESTFN, 'w').close() |
| self._test_all_chown_common(posix.chown, support.TESTFN) |
| |
| @unittest.skipUnless(hasattr(posix, 'fchown'), "test needs os.fchown()") |
| def test_fchown(self): |
| os.unlink(support.TESTFN) |
| |
| # re-create the file |
| test_file = open(support.TESTFN, 'w') |
| try: |
| fd = test_file.fileno() |
| self._test_all_chown_common(posix.fchown, fd) |
| finally: |
| test_file.close() |
| |
| @unittest.skipUnless(hasattr(posix, 'lchown'), "test needs os.lchown()") |
| def test_lchown(self): |
| os.unlink(support.TESTFN) |
| # create a symlink |
| os.symlink('/tmp/dummy-symlink-target', support.TESTFN) |
| self._test_all_chown_common(posix.lchown, support.TESTFN) |
| |
| def test_chdir(self): |
| if hasattr(posix, 'chdir'): |
| posix.chdir(os.curdir) |
| self.assertRaises(OSError, posix.chdir, support.TESTFN) |
| |
| def test_listdir(self): |
| if hasattr(posix, 'listdir'): |
| self.assertTrue(support.TESTFN in posix.listdir(os.curdir)) |
| |
| def test_listdir_default(self): |
| # When listdir is called without argument, it's the same as listdir(os.curdir) |
| if hasattr(posix, 'listdir'): |
| self.assertTrue(support.TESTFN in posix.listdir()) |
| |
| def test_access(self): |
| if hasattr(posix, 'access'): |
| self.assertTrue(posix.access(support.TESTFN, os.R_OK)) |
| |
| def test_umask(self): |
| if hasattr(posix, 'umask'): |
| old_mask = posix.umask(0) |
| self.assertIsInstance(old_mask, int) |
| posix.umask(old_mask) |
| |
| def test_strerror(self): |
| if hasattr(posix, 'strerror'): |
| self.assertTrue(posix.strerror(0)) |
| |
| def test_pipe(self): |
| if hasattr(posix, 'pipe'): |
| reader, writer = posix.pipe() |
| os.close(reader) |
| os.close(writer) |
| |
| def test_utime(self): |
| if hasattr(posix, 'utime'): |
| now = time.time() |
| posix.utime(support.TESTFN, None) |
| self.assertRaises(TypeError, posix.utime, support.TESTFN, (None, None)) |
| self.assertRaises(TypeError, posix.utime, support.TESTFN, (now, None)) |
| self.assertRaises(TypeError, posix.utime, support.TESTFN, (None, now)) |
| posix.utime(support.TESTFN, (int(now), int(now))) |
| posix.utime(support.TESTFN, (now, now)) |
| |
| def test_chflags(self): |
| if hasattr(posix, 'chflags'): |
| st = os.stat(support.TESTFN) |
| if hasattr(st, 'st_flags'): |
| posix.chflags(support.TESTFN, st.st_flags) |
| |
| def test_lchflags(self): |
| if hasattr(posix, 'lchflags'): |
| st = os.stat(support.TESTFN) |
| if hasattr(st, 'st_flags'): |
| posix.lchflags(support.TESTFN, 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_getcwd_long_pathnames(self): |
| if hasattr(posix, 'getcwd'): |
| dirname = 'getcwd-test-directory-0123456789abcdef-01234567890abcdef' |
| curdir = os.getcwd() |
| base_path = os.path.abspath(support.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) |
| support.rmtree(base_path) |
| |
| def test_getgroups(self): |
| with os.popen('id -G') as idg: |
| groups = idg.read().strip() |
| |
| if not groups: |
| raise unittest.SkipTest("need working 'id -G'") |
| |
| # 'id -G' and 'os.getgroups()' should return the same |
| # groups, ignoring order and duplicates. |
| self.assertEqual( |
| set([int(x) for x in groups.split()]), |
| set(posix.getgroups())) |
| |
| 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) + 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()) |
| |
| |
| def test_main(): |
| support.run_unittest(PosixTester, PosixGroupsTester) |
| |
| if __name__ == '__main__': |
| test_main() |