| "Test posix functions" |
| |
| from test import support |
| from test.support import import_helper |
| from test.support import os_helper |
| from test.support import warnings_helper |
| from test.support.script_helper import assert_python_ok |
| |
| import errno |
| import sys |
| import signal |
| import time |
| import os |
| import platform |
| import stat |
| import tempfile |
| import unittest |
| import warnings |
| import textwrap |
| from contextlib import contextmanager |
| |
| try: |
| import posix |
| except ImportError: |
| import nt as posix |
| |
| try: |
| import pwd |
| except ImportError: |
| pwd = None |
| |
| _DUMMY_SYMLINK = os.path.join(tempfile.gettempdir(), |
| os_helper.TESTFN + '-dummy-symlink') |
| |
| requires_32b = unittest.skipUnless( |
| # Emscripten/WASI have 32 bits pointers, but support 64 bits syscall args. |
| sys.maxsize < 2**32 and not (support.is_emscripten or support.is_wasi), |
| 'test is only meaningful on 32-bit builds' |
| ) |
| |
| def _supports_sched(): |
| if not hasattr(posix, 'sched_getscheduler'): |
| return False |
| try: |
| posix.sched_getscheduler(0) |
| except OSError as e: |
| if e.errno == errno.ENOSYS: |
| return False |
| return True |
| |
| requires_sched = unittest.skipUnless(_supports_sched(), 'requires POSIX scheduler API') |
| |
| |
| class PosixTester(unittest.TestCase): |
| |
| def setUp(self): |
| # create empty file |
| self.addCleanup(os_helper.unlink, os_helper.TESTFN) |
| with open(os_helper.TESTFN, "wb"): |
| pass |
| self.enterContext(warnings_helper.check_warnings()) |
| warnings.filterwarnings('ignore', '.* potential security risk .*', |
| RuntimeWarning) |
| |
| 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", "sync", |
| ] |
| |
| for name in NO_ARG_FUNCTIONS: |
| posix_func = getattr(posix, name, None) |
| if posix_func is not None: |
| with self.subTest(name): |
| posix_func() |
| self.assertRaises(TypeError, posix_func, 1) |
| |
| @unittest.skipUnless(hasattr(posix, 'getresuid'), |
| 'test needs 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) |
| |
| @unittest.skipUnless(hasattr(posix, 'getresgid'), |
| 'test needs 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) |
| |
| @unittest.skipUnless(hasattr(posix, 'setresuid'), |
| 'test needs 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)) |
| |
| @unittest.skipUnless(hasattr(posix, 'setresuid'), |
| 'test needs posix.setresuid()') |
| 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) |
| |
| @unittest.skipUnless(hasattr(posix, 'setresgid'), |
| 'test needs 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)) |
| |
| @unittest.skipUnless(hasattr(posix, 'setresgid'), |
| 'test needs posix.setresgid()') |
| 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()") |
| @unittest.skipUnless(hasattr(pwd, 'getpwuid'), "test needs pwd.getpwuid()") |
| 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: |
| try: |
| name = pwd.getpwuid(posix.getuid()).pw_name |
| except KeyError: |
| # the current UID may not have a pwd entry |
| raise unittest.SkipTest("need a pwd entry") |
| try: |
| posix.initgroups(name, 13) |
| except OSError as e: |
| self.assertEqual(e.errno, errno.EPERM) |
| else: |
| self.fail("Expected OSError to be raised by initgroups") |
| |
| @unittest.skipUnless(hasattr(posix, 'statvfs'), |
| 'test needs posix.statvfs()') |
| def test_statvfs(self): |
| self.assertTrue(posix.statvfs(os.curdir)) |
| |
| @unittest.skipUnless(hasattr(posix, 'fstatvfs'), |
| 'test needs posix.fstatvfs()') |
| def test_fstatvfs(self): |
| fp = open(os_helper.TESTFN) |
| try: |
| self.assertTrue(posix.fstatvfs(fp.fileno())) |
| self.assertTrue(posix.statvfs(fp.fileno())) |
| finally: |
| fp.close() |
| |
| @unittest.skipUnless(hasattr(posix, 'ftruncate'), |
| 'test needs posix.ftruncate()') |
| def test_ftruncate(self): |
| fp = open(os_helper.TESTFN, 'w+') |
| try: |
| # we need to have some data to truncate |
| fp.write('test') |
| fp.flush() |
| posix.ftruncate(fp.fileno(), 0) |
| finally: |
| fp.close() |
| |
| @unittest.skipUnless(hasattr(posix, 'truncate'), "test needs posix.truncate()") |
| def test_truncate(self): |
| with open(os_helper.TESTFN, 'w') as fp: |
| fp.write('test') |
| fp.flush() |
| posix.truncate(os_helper.TESTFN, 0) |
| |
| @unittest.skipUnless(getattr(os, 'execve', None) in os.supports_fd, "test needs execve() to support the fd parameter") |
| @support.requires_fork() |
| def test_fexecve(self): |
| fp = os.open(sys.executable, os.O_RDONLY) |
| try: |
| pid = os.fork() |
| if pid == 0: |
| os.chdir(os.path.split(sys.executable)[0]) |
| posix.execve(fp, [sys.executable, '-c', 'pass'], os.environ) |
| else: |
| support.wait_process(pid, exitcode=0) |
| finally: |
| os.close(fp) |
| |
| |
| @unittest.skipUnless(hasattr(posix, 'waitid'), "test needs posix.waitid()") |
| @support.requires_fork() |
| def test_waitid(self): |
| pid = os.fork() |
| if pid == 0: |
| os.chdir(os.path.split(sys.executable)[0]) |
| posix.execve(sys.executable, [sys.executable, '-c', 'pass'], os.environ) |
| else: |
| res = posix.waitid(posix.P_PID, pid, posix.WEXITED) |
| self.assertEqual(pid, res.si_pid) |
| |
| @support.requires_fork() |
| def test_register_at_fork(self): |
| with self.assertRaises(TypeError, msg="Positional args not allowed"): |
| os.register_at_fork(lambda: None) |
| with self.assertRaises(TypeError, msg="Args must be callable"): |
| os.register_at_fork(before=2) |
| with self.assertRaises(TypeError, msg="Args must be callable"): |
| os.register_at_fork(after_in_child="three") |
| with self.assertRaises(TypeError, msg="Args must be callable"): |
| os.register_at_fork(after_in_parent=b"Five") |
| with self.assertRaises(TypeError, msg="Args must not be None"): |
| os.register_at_fork(before=None) |
| with self.assertRaises(TypeError, msg="Args must not be None"): |
| os.register_at_fork(after_in_child=None) |
| with self.assertRaises(TypeError, msg="Args must not be None"): |
| os.register_at_fork(after_in_parent=None) |
| with self.assertRaises(TypeError, msg="Invalid arg was allowed"): |
| # Ensure a combination of valid and invalid is an error. |
| os.register_at_fork(before=None, after_in_parent=lambda: 3) |
| with self.assertRaises(TypeError, msg="At least one argument is required"): |
| # when no arg is passed |
| os.register_at_fork() |
| with self.assertRaises(TypeError, msg="Invalid arg was allowed"): |
| # Ensure a combination of valid and invalid is an error. |
| os.register_at_fork(before=lambda: None, after_in_child='') |
| # We test actual registrations in their own process so as not to |
| # pollute this one. There is no way to unregister for cleanup. |
| code = """if 1: |
| import os |
| |
| r, w = os.pipe() |
| fin_r, fin_w = os.pipe() |
| |
| os.register_at_fork(before=lambda: os.write(w, b'A')) |
| os.register_at_fork(after_in_parent=lambda: os.write(w, b'C')) |
| os.register_at_fork(after_in_child=lambda: os.write(w, b'E')) |
| os.register_at_fork(before=lambda: os.write(w, b'B'), |
| after_in_parent=lambda: os.write(w, b'D'), |
| after_in_child=lambda: os.write(w, b'F')) |
| |
| pid = os.fork() |
| if pid == 0: |
| # At this point, after-forkers have already been executed |
| os.close(w) |
| # Wait for parent to tell us to exit |
| os.read(fin_r, 1) |
| os._exit(0) |
| else: |
| try: |
| os.close(w) |
| with open(r, "rb") as f: |
| data = f.read() |
| assert len(data) == 6, data |
| # Check before-fork callbacks |
| assert data[:2] == b'BA', data |
| # Check after-fork callbacks |
| assert sorted(data[2:]) == list(b'CDEF'), data |
| assert data.index(b'C') < data.index(b'D'), data |
| assert data.index(b'E') < data.index(b'F'), data |
| finally: |
| os.write(fin_w, b'!') |
| """ |
| assert_python_ok('-c', code) |
| |
| @unittest.skipUnless(hasattr(posix, 'lockf'), "test needs posix.lockf()") |
| def test_lockf(self): |
| fd = os.open(os_helper.TESTFN, os.O_WRONLY | os.O_CREAT) |
| try: |
| os.write(fd, b'test') |
| os.lseek(fd, 0, os.SEEK_SET) |
| posix.lockf(fd, posix.F_LOCK, 4) |
| # section is locked |
| posix.lockf(fd, posix.F_ULOCK, 4) |
| finally: |
| os.close(fd) |
| |
| @unittest.skipUnless(hasattr(posix, 'pread'), "test needs posix.pread()") |
| def test_pread(self): |
| fd = os.open(os_helper.TESTFN, os.O_RDWR | os.O_CREAT) |
| try: |
| os.write(fd, b'test') |
| os.lseek(fd, 0, os.SEEK_SET) |
| self.assertEqual(b'es', posix.pread(fd, 2, 1)) |
| # the first pread() shouldn't disturb the file offset |
| self.assertEqual(b'te', posix.read(fd, 2)) |
| finally: |
| os.close(fd) |
| |
| @unittest.skipUnless(hasattr(posix, 'preadv'), "test needs posix.preadv()") |
| def test_preadv(self): |
| fd = os.open(os_helper.TESTFN, os.O_RDWR | os.O_CREAT) |
| try: |
| os.write(fd, b'test1tt2t3t5t6t6t8') |
| buf = [bytearray(i) for i in [5, 3, 2]] |
| self.assertEqual(posix.preadv(fd, buf, 3), 10) |
| self.assertEqual([b't1tt2', b't3t', b'5t'], list(buf)) |
| finally: |
| os.close(fd) |
| |
| @unittest.skipUnless(hasattr(posix, 'preadv'), "test needs posix.preadv()") |
| @unittest.skipUnless(hasattr(posix, 'RWF_HIPRI'), "test needs posix.RWF_HIPRI") |
| def test_preadv_flags(self): |
| fd = os.open(os_helper.TESTFN, os.O_RDWR | os.O_CREAT) |
| try: |
| os.write(fd, b'test1tt2t3t5t6t6t8') |
| buf = [bytearray(i) for i in [5, 3, 2]] |
| self.assertEqual(posix.preadv(fd, buf, 3, os.RWF_HIPRI), 10) |
| self.assertEqual([b't1tt2', b't3t', b'5t'], list(buf)) |
| except NotImplementedError: |
| self.skipTest("preadv2 not available") |
| except OSError as inst: |
| # Is possible that the macro RWF_HIPRI was defined at compilation time |
| # but the option is not supported by the kernel or the runtime libc shared |
| # library. |
| if inst.errno in {errno.EINVAL, errno.ENOTSUP}: |
| raise unittest.SkipTest("RWF_HIPRI is not supported by the current system") |
| else: |
| raise |
| finally: |
| os.close(fd) |
| |
| @unittest.skipUnless(hasattr(posix, 'preadv'), "test needs posix.preadv()") |
| @requires_32b |
| def test_preadv_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.preadv(fd, buf, 0) |
| self.assertEqual(cm.exception.errno, errno.EINVAL) |
| self.assertEqual(bytes(buf[0]), b'\0'* 2**16) |
| finally: |
| os.close(fd) |
| |
| @unittest.skipUnless(hasattr(posix, 'pwrite'), "test needs posix.pwrite()") |
| def test_pwrite(self): |
| fd = os.open(os_helper.TESTFN, os.O_RDWR | os.O_CREAT) |
| try: |
| os.write(fd, b'test') |
| os.lseek(fd, 0, os.SEEK_SET) |
| posix.pwrite(fd, b'xx', 1) |
| self.assertEqual(b'txxt', posix.read(fd, 4)) |
| finally: |
| os.close(fd) |
| |
| @unittest.skipUnless(hasattr(posix, 'pwritev'), "test needs posix.pwritev()") |
| def test_pwritev(self): |
| fd = os.open(os_helper.TESTFN, os.O_RDWR | os.O_CREAT) |
| try: |
| os.write(fd, b"xx") |
| os.lseek(fd, 0, os.SEEK_SET) |
| n = os.pwritev(fd, [b'test1', b'tt2', b't3'], 2) |
| self.assertEqual(n, 10) |
| |
| os.lseek(fd, 0, os.SEEK_SET) |
| self.assertEqual(b'xxtest1tt2t3', posix.read(fd, 100)) |
| finally: |
| os.close(fd) |
| |
| @unittest.skipUnless(hasattr(posix, 'pwritev'), "test needs posix.pwritev()") |
| @unittest.skipUnless(hasattr(posix, 'os.RWF_SYNC'), "test needs os.RWF_SYNC") |
| def test_pwritev_flags(self): |
| fd = os.open(os_helper.TESTFN, os.O_RDWR | os.O_CREAT) |
| try: |
| os.write(fd,b"xx") |
| os.lseek(fd, 0, os.SEEK_SET) |
| n = os.pwritev(fd, [b'test1', b'tt2', b't3'], 2, os.RWF_SYNC) |
| self.assertEqual(n, 10) |
| |
| os.lseek(fd, 0, os.SEEK_SET) |
| self.assertEqual(b'xxtest1tt2', posix.read(fd, 100)) |
| finally: |
| os.close(fd) |
| |
| @unittest.skipUnless(hasattr(posix, 'pwritev'), "test needs posix.pwritev()") |
| @requires_32b |
| def test_pwritev_overflow_32bits(self): |
| fd = os.open(os_helper.TESTFN, os.O_RDWR | os.O_CREAT) |
| try: |
| with self.assertRaises(OSError) as cm: |
| os.pwritev(fd, [b"x" * 2**16] * 2**15, 0) |
| self.assertEqual(cm.exception.errno, errno.EINVAL) |
| finally: |
| os.close(fd) |
| |
| @unittest.skipUnless(hasattr(posix, 'posix_fallocate'), |
| "test needs posix.posix_fallocate()") |
| def test_posix_fallocate(self): |
| fd = os.open(os_helper.TESTFN, os.O_WRONLY | os.O_CREAT) |
| try: |
| posix.posix_fallocate(fd, 0, 10) |
| except OSError as inst: |
| # issue10812, ZFS doesn't appear to support posix_fallocate, |
| # so skip Solaris-based since they are likely to have ZFS. |
| # issue33655: Also ignore EINVAL on *BSD since ZFS is also |
| # often used there. |
| if inst.errno == errno.EINVAL and sys.platform.startswith( |
| ('sunos', 'freebsd', 'netbsd', 'openbsd', 'gnukfreebsd')): |
| raise unittest.SkipTest("test may fail on ZFS filesystems") |
| else: |
| raise |
| finally: |
| os.close(fd) |
| |
| # issue31106 - posix_fallocate() does not set error in errno. |
| @unittest.skipUnless(hasattr(posix, 'posix_fallocate'), |
| "test needs posix.posix_fallocate()") |
| def test_posix_fallocate_errno(self): |
| try: |
| posix.posix_fallocate(-42, 0, 10) |
| except OSError as inst: |
| 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()') |
| 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) |
| self.assertRaises((ValueError, OverflowError), posix.major, -1) |
| |
| 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) |
| self.assertRaises((ValueError, OverflowError), posix.minor, -1) |
| |
| 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) |
| |
| 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 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) |
| |
| @os_helper.skip_unless_working_chmod |
| @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 _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) |
| # OSX evidently just returns 15 without checking the argument. |
| if sys.platform != "darwin": |
| 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 OSError as e: |
| if e.errno != errno.EPERM: |
| raise |
| 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 OSError as e: |
| if e.errno != errno.EPERM: |
| raise |
| 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) |
| |
| @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) |
| self.assertRaises(OSError, posix.sched_setaffinity, 0, []) |
| 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) |
| |
| @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") |
| class TestPosixSpawn(unittest.TestCase, _PosixSpawnMixin): |
| spawn_func = getattr(posix, 'posix_spawn', None) |
| |
| |
| @unittest.skipUnless(hasattr(os, 'posix_spawnp'), "test needs os.posix_spawnp") |
| 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) |
| |
| |
| @unittest.skipUnless(sys.platform == "darwin", "test weak linking on macOS") |
| class TestPosixWeaklinking(unittest.TestCase): |
| # These test cases verify that weak linking support on macOS works |
| # as expected. These cases only test new behaviour introduced by weak linking, |
| # regular behaviour is tested by the normal test cases. |
| # |
| # See the section on Weak Linking in Mac/README.txt for more information. |
| def setUp(self): |
| import sysconfig |
| import platform |
| |
| config_vars = sysconfig.get_config_vars() |
| self.available = { nm for nm in config_vars if nm.startswith("HAVE_") and config_vars[nm] } |
| self.mac_ver = tuple(int(part) for part in platform.mac_ver()[0].split(".")) |
| |
| def _verify_available(self, name): |
| if name not in self.available: |
| raise unittest.SkipTest(f"{name} not weak-linked") |
| |
| def test_pwritev(self): |
| self._verify_available("HAVE_PWRITEV") |
| if self.mac_ver >= (10, 16): |
| self.assertTrue(hasattr(os, "pwritev"), "os.pwritev is not available") |
| self.assertTrue(hasattr(os, "preadv"), "os.readv is not available") |
| |
| else: |
| self.assertFalse(hasattr(os, "pwritev"), "os.pwritev is available") |
| self.assertFalse(hasattr(os, "preadv"), "os.readv is available") |
| |
| def test_stat(self): |
| self._verify_available("HAVE_FSTATAT") |
| if self.mac_ver >= (10, 10): |
| self.assertIn("HAVE_FSTATAT", posix._have_functions) |
| |
| else: |
| self.assertNotIn("HAVE_FSTATAT", posix._have_functions) |
| |
| with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): |
| os.stat("file", dir_fd=0) |
| |
| def test_access(self): |
| self._verify_available("HAVE_FACCESSAT") |
| if self.mac_ver >= (10, 10): |
| self.assertIn("HAVE_FACCESSAT", posix._have_functions) |
| |
| else: |
| self.assertNotIn("HAVE_FACCESSAT", posix._have_functions) |
| |
| with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): |
| os.access("file", os.R_OK, dir_fd=0) |
| |
| with self.assertRaisesRegex(NotImplementedError, "follow_symlinks unavailable"): |
| os.access("file", os.R_OK, follow_symlinks=False) |
| |
| with self.assertRaisesRegex(NotImplementedError, "effective_ids unavailable"): |
| os.access("file", os.R_OK, effective_ids=True) |
| |
| def test_chmod(self): |
| self._verify_available("HAVE_FCHMODAT") |
| if self.mac_ver >= (10, 10): |
| self.assertIn("HAVE_FCHMODAT", posix._have_functions) |
| |
| else: |
| self.assertNotIn("HAVE_FCHMODAT", posix._have_functions) |
| self.assertIn("HAVE_LCHMOD", posix._have_functions) |
| |
| with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): |
| os.chmod("file", 0o644, dir_fd=0) |
| |
| def test_chown(self): |
| self._verify_available("HAVE_FCHOWNAT") |
| if self.mac_ver >= (10, 10): |
| self.assertIn("HAVE_FCHOWNAT", posix._have_functions) |
| |
| else: |
| self.assertNotIn("HAVE_FCHOWNAT", posix._have_functions) |
| self.assertIn("HAVE_LCHOWN", posix._have_functions) |
| |
| with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): |
| os.chown("file", 0, 0, dir_fd=0) |
| |
| def test_link(self): |
| self._verify_available("HAVE_LINKAT") |
| if self.mac_ver >= (10, 10): |
| self.assertIn("HAVE_LINKAT", posix._have_functions) |
| |
| else: |
| self.assertNotIn("HAVE_LINKAT", posix._have_functions) |
| |
| with self.assertRaisesRegex(NotImplementedError, "src_dir_fd unavailable"): |
| os.link("source", "target", src_dir_fd=0) |
| |
| with self.assertRaisesRegex(NotImplementedError, "dst_dir_fd unavailable"): |
| os.link("source", "target", dst_dir_fd=0) |
| |
| with self.assertRaisesRegex(NotImplementedError, "src_dir_fd unavailable"): |
| os.link("source", "target", src_dir_fd=0, dst_dir_fd=0) |
| |
| # issue 41355: !HAVE_LINKAT code path ignores the follow_symlinks flag |
| with os_helper.temp_dir() as base_path: |
| link_path = os.path.join(base_path, "link") |
| target_path = os.path.join(base_path, "target") |
| source_path = os.path.join(base_path, "source") |
| |
| with open(source_path, "w") as fp: |
| fp.write("data") |
| |
| os.symlink("target", link_path) |
| |
| # Calling os.link should fail in the link(2) call, and |
| # should not reject *follow_symlinks* (to match the |
| # behaviour you'd get when building on a platform without |
| # linkat) |
| with self.assertRaises(FileExistsError): |
| os.link(source_path, link_path, follow_symlinks=True) |
| |
| with self.assertRaises(FileExistsError): |
| os.link(source_path, link_path, follow_symlinks=False) |
| |
| |
| def test_listdir_scandir(self): |
| self._verify_available("HAVE_FDOPENDIR") |
| if self.mac_ver >= (10, 10): |
| self.assertIn("HAVE_FDOPENDIR", posix._have_functions) |
| |
| else: |
| self.assertNotIn("HAVE_FDOPENDIR", posix._have_functions) |
| |
| with self.assertRaisesRegex(TypeError, "listdir: path should be string, bytes, os.PathLike or None, not int"): |
| os.listdir(0) |
| |
| with self.assertRaisesRegex(TypeError, "scandir: path should be string, bytes, os.PathLike or None, not int"): |
| os.scandir(0) |
| |
| def test_mkdir(self): |
| self._verify_available("HAVE_MKDIRAT") |
| if self.mac_ver >= (10, 10): |
| self.assertIn("HAVE_MKDIRAT", posix._have_functions) |
| |
| else: |
| self.assertNotIn("HAVE_MKDIRAT", posix._have_functions) |
| |
| with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): |
| os.mkdir("dir", dir_fd=0) |
| |
| def test_mkfifo(self): |
| self._verify_available("HAVE_MKFIFOAT") |
| if self.mac_ver >= (13, 0): |
| self.assertIn("HAVE_MKFIFOAT", posix._have_functions) |
| |
| else: |
| self.assertNotIn("HAVE_MKFIFOAT", posix._have_functions) |
| |
| with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): |
| os.mkfifo("path", dir_fd=0) |
| |
| def test_mknod(self): |
| self._verify_available("HAVE_MKNODAT") |
| if self.mac_ver >= (13, 0): |
| self.assertIn("HAVE_MKNODAT", posix._have_functions) |
| |
| else: |
| self.assertNotIn("HAVE_MKNODAT", posix._have_functions) |
| |
| with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): |
| os.mknod("path", dir_fd=0) |
| |
| def test_rename_replace(self): |
| self._verify_available("HAVE_RENAMEAT") |
| if self.mac_ver >= (10, 10): |
| self.assertIn("HAVE_RENAMEAT", posix._have_functions) |
| |
| else: |
| self.assertNotIn("HAVE_RENAMEAT", posix._have_functions) |
| |
| with self.assertRaisesRegex(NotImplementedError, "src_dir_fd and dst_dir_fd unavailable"): |
| os.rename("a", "b", src_dir_fd=0) |
| |
| with self.assertRaisesRegex(NotImplementedError, "src_dir_fd and dst_dir_fd unavailable"): |
| os.rename("a", "b", dst_dir_fd=0) |
| |
| with self.assertRaisesRegex(NotImplementedError, "src_dir_fd and dst_dir_fd unavailable"): |
| os.replace("a", "b", src_dir_fd=0) |
| |
| with self.assertRaisesRegex(NotImplementedError, "src_dir_fd and dst_dir_fd unavailable"): |
| os.replace("a", "b", dst_dir_fd=0) |
| |
| def test_unlink_rmdir(self): |
| self._verify_available("HAVE_UNLINKAT") |
| if self.mac_ver >= (10, 10): |
| self.assertIn("HAVE_UNLINKAT", posix._have_functions) |
| |
| else: |
| self.assertNotIn("HAVE_UNLINKAT", posix._have_functions) |
| |
| with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): |
| os.unlink("path", dir_fd=0) |
| |
| with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): |
| os.rmdir("path", dir_fd=0) |
| |
| def test_open(self): |
| self._verify_available("HAVE_OPENAT") |
| if self.mac_ver >= (10, 10): |
| self.assertIn("HAVE_OPENAT", posix._have_functions) |
| |
| else: |
| self.assertNotIn("HAVE_OPENAT", posix._have_functions) |
| |
| with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): |
| os.open("path", os.O_RDONLY, dir_fd=0) |
| |
| def test_readlink(self): |
| self._verify_available("HAVE_READLINKAT") |
| if self.mac_ver >= (10, 10): |
| self.assertIn("HAVE_READLINKAT", posix._have_functions) |
| |
| else: |
| self.assertNotIn("HAVE_READLINKAT", posix._have_functions) |
| |
| with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): |
| os.readlink("path", dir_fd=0) |
| |
| def test_symlink(self): |
| self._verify_available("HAVE_SYMLINKAT") |
| if self.mac_ver >= (10, 10): |
| self.assertIn("HAVE_SYMLINKAT", posix._have_functions) |
| |
| else: |
| self.assertNotIn("HAVE_SYMLINKAT", posix._have_functions) |
| |
| with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): |
| os.symlink("a", "b", dir_fd=0) |
| |
| def test_utime(self): |
| self._verify_available("HAVE_FUTIMENS") |
| self._verify_available("HAVE_UTIMENSAT") |
| if self.mac_ver >= (10, 13): |
| self.assertIn("HAVE_FUTIMENS", posix._have_functions) |
| self.assertIn("HAVE_UTIMENSAT", posix._have_functions) |
| |
| else: |
| self.assertNotIn("HAVE_FUTIMENS", posix._have_functions) |
| self.assertNotIn("HAVE_UTIMENSAT", posix._have_functions) |
| |
| with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): |
| os.utime("path", dir_fd=0) |
| |
| |
| class NamespacesTests(unittest.TestCase): |
| """Tests for os.unshare() and os.setns().""" |
| |
| @unittest.skipUnless(hasattr(os, 'unshare'), 'needs os.unshare()') |
| @unittest.skipUnless(hasattr(os, 'setns'), 'needs os.setns()') |
| @unittest.skipUnless(os.path.exists('/proc/self/ns/uts'), 'need /proc/self/ns/uts') |
| @support.requires_linux_version(3, 0, 0) |
| def test_unshare_setns(self): |
| code = """if 1: |
| import errno |
| import os |
| import sys |
| fd = os.open('/proc/self/ns/uts', os.O_RDONLY) |
| try: |
| original = os.readlink('/proc/self/ns/uts') |
| try: |
| os.unshare(os.CLONE_NEWUTS) |
| except OSError as e: |
| if e.errno == errno.ENOSPC: |
| # skip test if limit is exceeded |
| sys.exit() |
| raise |
| new = os.readlink('/proc/self/ns/uts') |
| if original == new: |
| raise Exception('os.unshare failed') |
| os.setns(fd, os.CLONE_NEWUTS) |
| restored = os.readlink('/proc/self/ns/uts') |
| if original != restored: |
| raise Exception('os.setns failed') |
| except PermissionError: |
| # The calling process did not have the required privileges |
| # for this operation |
| pass |
| except OSError as e: |
| # Skip the test on these errors: |
| # - ENOSYS: syscall not available |
| # - EINVAL: kernel was not configured with the CONFIG_UTS_NS option |
| # - ENOMEM: not enough memory |
| if e.errno not in (errno.ENOSYS, errno.EINVAL, errno.ENOMEM): |
| raise |
| finally: |
| os.close(fd) |
| """ |
| |
| assert_python_ok("-c", code) |
| |
| |
| def tearDownModule(): |
| support.reap_children() |
| |
| |
| if __name__ == '__main__': |
| unittest.main() |
