Python errno.ENOTTY属性代码示例

# 需要导入模块: import errno [as 别名]
# 或者: from errno import ENOTTY [as 别名]
def test_does_not_crash(self):
        """Check if get_terminal_size() returns a meaningful value.

        There's no easy portable way to actually check the size of the
        terminal, so let's check if it returns something sensible instead.
        """
        try:
            size = os.get_terminal_size()
        except OSError as e:
            if sys.platform == "win32" or e.errno in (errno.EINVAL, errno.ENOTTY):
                # Under win32 a generic OSError can be thrown if the
                # handle cannot be retrieved
                self.skipTest("failed to query terminal size")
            raise

        self.assertGreaterEqual(size.columns, 0)
        self.assertGreaterEqual(size.lines, 0) 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import ENOTTY [as 别名]
def test_stty_match(self):
        """Check if stty returns the same results

        stty actually tests stdin, so get_terminal_size is invoked on
        stdin explicitly. If stty succeeded, then get_terminal_size()
        should work too.
        """
        try:
            size = subprocess.check_output(['stty', 'size']).decode().split()
        except (FileNotFoundError, subprocess.CalledProcessError):
            self.skipTest("stty invocation failed")
        expected = (int(size[1]), int(size[0])) # reversed order

        try:
            actual = os.get_terminal_size(sys.__stdin__.fileno())
        except OSError as e:
            if sys.platform == "win32" or e.errno in (errno.EINVAL, errno.ENOTTY):
                # Under win32 a generic OSError can be thrown if the
                # handle cannot be retrieved
                self.skipTest("failed to query terminal size")
            raise
        self.assertEqual(expected, actual) 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import ENOTTY [as 别名]
def _is_daemon():
    # The process group for a foreground process will match the
    # process group of the controlling terminal. If those values do
    # not match, or ioctl() fails on the stdout file handle, we assume
    # the process is running in the background as a daemon.
    # http://www.gnu.org/software/bash/manual/bashref.html#Job-Control-Basics
    try:
        is_daemon = os.getpgrp() != os.tcgetpgrp(sys.stdout.fileno())
    except io.UnsupportedOperation:
        # Could not get the fileno for stdout, so we must be a daemon.
        is_daemon = True
    except OSError as err:
        if err.errno == errno.ENOTTY:
            # Assume we are a daemon because there is no terminal.
            is_daemon = True
        else:
            raise
    return is_daemon 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import ENOTTY [as 别名]
def _add_linux_attr(self, path, st):
        if not get_linux_file_attr: return
        if stat.S_ISREG(st.st_mode) or stat.S_ISDIR(st.st_mode):
            try:
                attr = get_linux_file_attr(path)
                if attr != 0:
                    self.linux_attr = attr
            except OSError, e:
                if e.errno == errno.EACCES:
                    add_error('read Linux attr: %s' % e)
                elif e.errno == errno.ENOTTY: # Inappropriate ioctl for device.
                    add_error('read Linux attr: %s' % e)
                else:
                    raise 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import ENOTTY [as 别名]
def ioctl(self, request, argp):
        raise FdError("Invalid ioctl() operation on Directory", errno.ENOTTY) 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import ENOTTY [as 别名]
def ioctl(self, path, cmd, arg, fip, flags, data):
        raise FuseOSError(errno.ENOTTY) 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import ENOTTY [as 别名]
def can_modify_immutable(path: str = "/var/tmp") -> bool:
        """Check Immutable-Flag Capability

        This checks whether the calling process is allowed to toggle the
        `FS_IMMUTABLE_FL` file flag. This is limited to `CAP_LINUX_IMMUTABLE`
        in the initial user-namespace. Therefore, only highly privileged
        processes can do this.

        There is no reliable way to check whether we can do this. The only
        possible check is to see whether we can temporarily toggle the flag
        or not. Since this is highly dependent on the file-system that file
        is on, you can optionally pass in the path where to test this. Since
        shmem/tmpfs on linux does not support this, the default is `/var/tmp`.
        """

        with tempfile.TemporaryFile(dir=path) as f:
            # First try whether `FS_IOC_GETFLAGS` is actually implemented
            # for the filesystem we test on. If it is not, lets assume we
            # cannot modify the flag and make callers skip their tests.
            try:
                b = linux.ioctl_get_immutable(f.fileno())
            except OSError as e:
                if e.errno in [errno.EACCES, errno.ENOTTY, errno.EPERM]:
                    return False
                raise

            # Verify temporary files are not marked immutable by default.
            assert not b

            # Try toggling the immutable flag. Make sure we always reset it
            # so the cleanup code can actually drop the temporary object.
            try:
                linux.ioctl_toggle_immutable(f.fileno(), True)
                linux.ioctl_toggle_immutable(f.fileno(), False)
            except OSError as e:
                if e.errno in [errno.EACCES, errno.EPERM]:
                    return False
                raise

        return True 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import ENOTTY [as 别名]
def syscall_ioctl( s, arg0, arg1, arg2 ):
  fd  = arg0
  req = arg1

  if s.debug.enabled( "syscalls" ):
    print "syscall_ioctl( fd=%x, req=%x )" % ( fd, req ),

  # TODO: not sure what this does... return errno 0
  result     = -errno.ENOTTY if fd >= 0 else -errno.EBADF
  return result, 0 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import ENOTTY [as 别名]
def open(self):
        """\
        Open port with current settings. This may throw a SerialException
        if the port cannot be opened."""
        if self._port is None:
            raise SerialException("Port must be configured before it can be used.")
        if self.is_open:
            raise SerialException("Port is already open.")
        self.fd = None
        # open
        try:
            self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
        except OSError as msg:
            self.fd = None
            raise SerialException(msg.errno, "could not open port {0}: {1}".format(self._port, msg))
        #~ fcntl.fcntl(self.fd, fcntl.F_SETFL, 0)  # set blocking

        try:
            self._reconfigure_port(force_update=True)
        except:
            try:
                os.close(self.fd)
            except:
                # ignore any exception when closing the port
                # also to keep original exception that happened when setting up
                pass
            self.fd = None
            raise
        else:
            self.is_open = True
        try:
            if not self._dsrdtr:
                self._update_dtr_state()
            if not self._rtscts:
                self._update_rts_state()
        except IOError as e:
            if e.errno in (errno.EINVAL, errno.ENOTTY):
                # ignore Invalid argument and Inappropriate ioctl
                pass
            else:
                raise
        self.reset_input_buffer()
        self.pipe_abort_read_r, self.pipe_abort_read_w = os.pipe()
        self.pipe_abort_write_r, self.pipe_abort_write_w = os.pipe()
        fcntl.fcntl(self.pipe_abort_read_r, fcntl.F_SETFL, os.O_NONBLOCK)
        fcntl.fcntl(self.pipe_abort_write_r, fcntl.F_SETFL, os.O_NONBLOCK) 

# 需要导入模块: import errno [as 别名]
# 或者: from errno import ENOTTY [as 别名]
def open(self):
        """\
        Open port with current settings. This may throw a SerialException
        if the port cannot be opened."""
        if self._port is None:
            raise SerialException("Port must be configured before it can be used.")
        if self.is_open:
            raise SerialException("Port is already open.")
        self.fd = None
        # open
        try:
            self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
        except OSError as msg:
            self.fd = None
            raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
        #~ fcntl.fcntl(self.fd, fcntl.F_SETFL, 0)  # set blocking

        try:
            self._reconfigure_port(force_update=True)
        except:
            try:
                os.close(self.fd)
            except:
                # ignore any exception when closing the port
                # also to keep original exception that happened when setting up
                pass
            self.fd = None
            raise
        else:
            self.is_open = True
        try:
            if not self._dsrdtr:
                self._update_dtr_state()
            if not self._rtscts:
                self._update_rts_state()
        except IOError as e:
            if e.errno in (errno.EINVAL, errno.ENOTTY):
                # ignore Invalid argument and Inappropriate ioctl
                pass
            else:
                raise
        self.reset_input_buffer()
        self.pipe_abort_read_r, self.pipe_abort_read_w = os.pipe()
        self.pipe_abort_write_r, self.pipe_abort_write_w = os.pipe()
        fcntl.fcntl(self.pipe_abort_read_r, fcntl.F_SETFL, os.O_NONBLOCK)
        fcntl.fcntl(self.pipe_abort_write_r, fcntl.F_SETFL, os.O_NONBLOCK)