Method test_mknod_dir_fd

Lib/test/test_os/test_posix.py:1798–1811

(self)

                         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):