Python os.O_NOCTTY() Examples

The following are code examples for showing how to use os.O_NOCTTY(). They are extracted from open source Python projects. You can vote up the examples you like or vote down the exmaples you don't like. You can also save this page to your account.

Example 1
Project: android3dblendermouse   Author: sketchpunk   File: serialposix.py    (license) View Source Project 5 votes vote down vote up
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 %s: %s" % (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
        if not self._dsrdtr:
            self._update_dtr_state()
        if not self._rtscts:
            self._update_rts_state()
        self.reset_input_buffer() 
Example 2
Project: watchmen   Author: lycclsltt   File: _fork_pty.py    (license) View Source Project 5 votes vote down vote up
def pty_make_controlling_tty(tty_fd):
    '''This makes the pseudo-terminal the controlling tty. This should be
    more portable than the pty.fork() function. Specifically, this should
    work on Solaris. '''

    child_name = os.ttyname(tty_fd)

    # Disconnect from controlling tty, if any.  Raises OSError of ENXIO
    # if there was no controlling tty to begin with, such as when
    # executed by a cron(1) job.
    try:
        fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
        os.close(fd)
    except OSError as err:
        if err.errno != errno.ENXIO:
            raise

    os.setsid()

    # Verify we are disconnected from controlling tty by attempting to open
    # it again.  We expect that OSError of ENXIO should always be raised.
    try:
        fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
        os.close(fd)
        raise ExceptionPexpect("OSError of errno.ENXIO should be raised.")
    except OSError as err:
        if err.errno != errno.ENXIO:
            raise

    # Verify we can open child pty.
    fd = os.open(child_name, os.O_RDWR)
    os.close(fd)

    # Verify we now have a controlling tty.
    fd = os.open("/dev/tty", os.O_WRONLY)
    os.close(fd) 
Example 3
Project: microperi   Author: c0d3st0rm   File: serialposix.py    (license) View Source Project 5 votes vote down vote up
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 %s: %s" % (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
        if not self._dsrdtr:
            self._update_dtr_state()
        if not self._rtscts:
            self._update_rts_state()
        self.reset_input_buffer() 
Example 4
Project: rpi3-webiopi   Author: thortex   File: serial.py    (license) View Source Project 5 votes vote down vote up
def __init__(self, device="/dev/ttyAMA0", baudrate=9600):
        if not device.startswith("/dev/"):
            device = "/dev/%s" % device
        
        if isinstance(baudrate, str):
            baudrate = int(baudrate)

        aname = "B%d" % baudrate
        if not hasattr(termios, aname):
            raise Exception("Unsupported baudrate")
        self.baudrate = baudrate

        Bus.__init__(self, "UART", device, os.O_RDWR | os.O_NOCTTY)
        fcntl.fcntl(self.fd, fcntl.F_SETFL, os.O_NDELAY)
        
        #backup  = termios.tcgetattr(self.fd)
        options = termios.tcgetattr(self.fd)
        # iflag
        options[0] = 0

        # oflag
        options[1] = 0

        # cflag
        options[2] |= (termios.CLOCAL | termios.CREAD)
        options[2] &= ~termios.PARENB
        options[2] &= ~termios.CSTOPB
        options[2] &= ~termios.CSIZE
        options[2] |= termios.CS8

        # lflag
        options[3] = 0

        speed = getattr(termios, aname)
        # input speed
        options[4] = speed
        # output speed
        options[5] = speed
        
        termios.tcsetattr(self.fd, termios.TCSADRAIN, options) 
Example 5
Project: leetcode   Author: thomasyimgit   File: _fork_pty.py    (license) View Source Project 5 votes vote down vote up
def pty_make_controlling_tty(tty_fd):
    '''This makes the pseudo-terminal the controlling tty. This should be
    more portable than the pty.fork() function. Specifically, this should
    work on Solaris. '''

    child_name = os.ttyname(tty_fd)

    # Disconnect from controlling tty, if any.  Raises OSError of ENXIO
    # if there was no controlling tty to begin with, such as when
    # executed by a cron(1) job.
    try:
        fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
        os.close(fd)
    except OSError as err:
        if err.errno != errno.ENXIO:
            raise

    os.setsid()

    # Verify we are disconnected from controlling tty by attempting to open
    # it again.  We expect that OSError of ENXIO should always be raised.
    try:
        fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
        os.close(fd)
        raise ExceptionPexpect("OSError of errno.ENXIO should be raised.")
    except OSError as err:
        if err.errno != errno.ENXIO:
            raise

    # Verify we can open child pty.
    fd = os.open(child_name, os.O_RDWR)
    os.close(fd)

    # Verify we now have a controlling tty.
    fd = os.open("/dev/tty", os.O_WRONLY)
    os.close(fd) 
Example 6
Project: microbit-serial   Author: martinohanlon   File: serialposix.py    (license) View Source Project 5 votes vote down vote up
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 %s: %s" % (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
        if not self._dsrdtr:
            self._update_dtr_state()
        if not self._rtscts:
            self._update_rts_state()
        self.reset_input_buffer() 
Example 7
Project: winpexpect   Author: geertj   File: pexpect.py    (license) View Source Project 5 votes vote down vote up
def __pty_make_controlling_tty(self, tty_fd):

        """This makes the pseudo-terminal the controlling tty. This should be
        more portable than the pty.fork() function. Specifically, this should
        work on Solaris. """

        child_name = os.ttyname(tty_fd)

        # Disconnect from controlling tty if still connected.
        fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY);
        if fd >= 0:
            os.close(fd)

        os.setsid()

        # Verify we are disconnected from controlling tty
        try:
            fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY);
            if fd >= 0:
                os.close(fd)
                raise ExceptionPexpect, "Error! We are not disconnected from a controlling tty."
        except:
            # Good! We are disconnected from a controlling tty.
            pass

        # Verify we can open child pty.
        fd = os.open(child_name, os.O_RDWR);
        if fd < 0:
            raise ExceptionPexpect, "Error! Could not open child pty, " + child_name
        else:
            os.close(fd)

        # Verify we now have a controlling tty.
        fd = os.open("/dev/tty", os.O_WRONLY)
        if fd < 0:
            raise ExceptionPexpect, "Error! Could not open controlling tty, /dev/tty"
        else:
            os.close(fd) 
Example 8
Project: Cayenne-Agent   Author: myDevicesIoT   File: serial.py    (license) View Source Project 5 votes vote down vote up
def __init__(self, device="/dev/ttyAMA0", baudrate=9600):
        if not device.startswith("/dev/"):
            device = "/dev/%s" % device
        
        if isinstance(baudrate, str):
            baudrate = int(baudrate)

        aname = "B%d" % baudrate
        if not hasattr(termios, aname):
            raise Exception("Unsupported baudrate")
        self.baudrate = baudrate

        Bus.__init__(self, "UART", device, os.O_RDWR | os.O_NOCTTY)
        fcntl.fcntl(self.fd, fcntl.F_SETFL, os.O_NDELAY)
        
        #backup  = termios.tcgetattr(self.fd)
        options = termios.tcgetattr(self.fd)
        # iflag
        options[0] = 0

        # oflag
        options[1] = 0

        # cflag
        options[2] |= (termios.CLOCAL | termios.CREAD)
        options[2] &= ~termios.PARENB
        options[2] &= ~termios.CSTOPB
        options[2] &= ~termios.CSIZE
        options[2] |= termios.CS8

        # lflag
        options[3] = 0

        speed = getattr(termios, aname)
        # input speed
        options[4] = speed
        # output speed
        options[5] = speed
        
        termios.tcsetattr(self.fd, termios.TCSADRAIN, options) 
Example 9
Project: obsoleted-vpduserv   Author: InfraSIM   File: __init__.py    (license) View Source Project 5 votes vote down vote up
def __pty_make_controlling_tty(self, tty_fd):
        '''This makes the pseudo-terminal the controlling tty. This should be
        more portable than the pty.fork() function. Specifically, this should
        work on Solaris. '''

        child_name = os.ttyname(tty_fd)

        # Disconnect from controlling tty, if any.  Raises OSError of ENXIO
        # if there was no controlling tty to begin with, such as when
        # executed by a cron(1) job.
        try:
            fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
            os.close(fd)
        except OSError as err:
            if err.errno != errno.ENXIO:
                raise

        os.setsid()

        # Verify we are disconnected from controlling tty by attempting to open
        # it again.  We expect that OSError of ENXIO should always be raised.
        try:
            fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
            os.close(fd)
            raise ExceptionPexpect("OSError of errno.ENXIO should be raised.")
        except OSError as err:
            if err.errno != errno.ENXIO:
                raise

        # Verify we can open child pty.
        fd = os.open(child_name, os.O_RDWR)
        os.close(fd)

        # Verify we now have a controlling tty.
        fd = os.open("/dev/tty", os.O_WRONLY)
        os.close(fd) 
Example 10
Project: Repobot   Author: Desgard   File: _fork_pty.py    (license) View Source Project 5 votes vote down vote up
def pty_make_controlling_tty(tty_fd):
    '''This makes the pseudo-terminal the controlling tty. This should be
    more portable than the pty.fork() function. Specifically, this should
    work on Solaris. '''

    child_name = os.ttyname(tty_fd)

    # Disconnect from controlling tty, if any.  Raises OSError of ENXIO
    # if there was no controlling tty to begin with, such as when
    # executed by a cron(1) job.
    try:
        fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
        os.close(fd)
    except OSError as err:
        if err.errno != errno.ENXIO:
            raise

    os.setsid()

    # Verify we are disconnected from controlling tty by attempting to open
    # it again.  We expect that OSError of ENXIO should always be raised.
    try:
        fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
        os.close(fd)
        raise ExceptionPexpect("OSError of errno.ENXIO should be raised.")
    except OSError as err:
        if err.errno != errno.ENXIO:
            raise

    # Verify we can open child pty.
    fd = os.open(child_name, os.O_RDWR)
    os.close(fd)

    # Verify we now have a controlling tty.
    fd = os.open("/dev/tty", os.O_WRONLY)
    os.close(fd) 
Example 11
Project: pipenv   Author: pypa   File: _fork_pty.py    (license) View Source Project 5 votes vote down vote up
def pty_make_controlling_tty(tty_fd):
    '''This makes the pseudo-terminal the controlling tty. This should be
    more portable than the pty.fork() function. Specifically, this should
    work on Solaris. '''

    child_name = os.ttyname(tty_fd)

    # Disconnect from controlling tty, if any.  Raises OSError of ENXIO
    # if there was no controlling tty to begin with, such as when
    # executed by a cron(1) job.
    try:
        fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
        os.close(fd)
    except OSError as err:
        if err.errno != errno.ENXIO:
            raise

    os.setsid()

    # Verify we are disconnected from controlling tty by attempting to open
    # it again.  We expect that OSError of ENXIO should always be raised.
    try:
        fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
        os.close(fd)
        raise ExceptionPexpect("OSError of errno.ENXIO should be raised.")
    except OSError as err:
        if err.errno != errno.ENXIO:
            raise

    # Verify we can open child pty.
    fd = os.open(child_name, os.O_RDWR)
    os.close(fd)

    # Verify we now have a controlling tty.
    fd = os.open("/dev/tty", os.O_WRONLY)
    os.close(fd) 
Example 12
Project: ouroboros   Author: pybee   File: test_getpass.py    (license) View Source Project 5 votes vote down vote up
def test_uses_tty_directly(self):
        with mock.patch('os.open') as open, \
                mock.patch('io.FileIO') as fileio, \
                mock.patch('io.TextIOWrapper') as textio:
            # By setting open's return value to None the implementation will
            # skip code we don't care about in this test.  We can mock this out
            # fully if an alternate implementation works differently.
            open.return_value = None
            getpass.unix_getpass()
            open.assert_called_once_with('/dev/tty',
                                         os.O_RDWR | os.O_NOCTTY)
            fileio.assert_called_once_with(open.return_value, 'w+')
            textio.assert_called_once_with(fileio.return_value) 
Example 13
Project: ssh-tunnel   Author: aalku   File: __init__.py    (license) View Source Project 5 votes vote down vote up
def __pty_make_controlling_tty(self, tty_fd):
        '''This makes the pseudo-terminal the controlling tty. This should be
        more portable than the pty.fork() function. Specifically, this should
        work on Solaris. '''

        child_name = os.ttyname(tty_fd)

        # Disconnect from controlling tty, if any.  Raises OSError of ENXIO
        # if there was no controlling tty to begin with, such as when
        # executed by a cron(1) job.
        try:
            fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
            os.close(fd)
        except OSError as err:
            if err.errno != errno.ENXIO:
                raise

        os.setsid()

        # Verify we are disconnected from controlling tty by attempting to open
        # it again.  We expect that OSError of ENXIO should always be raised.
        try:
            fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
            os.close(fd)
            raise ExceptionPexpect("OSError of errno.ENXIO should be raised.")
        except OSError as err:
            if err.errno != errno.ENXIO:
                raise

        # Verify we can open child pty.
        fd = os.open(child_name, os.O_RDWR)
        os.close(fd)

        # Verify we now have a controlling tty.
        fd = os.open("/dev/tty", os.O_WRONLY)
        os.close(fd) 
Example 14
Project: zenchmarks   Author: squeaky-pl   File: test_process.py    (license) View Source Project 5 votes vote down vote up
def __init__(self):
        """
        Initialize data structures.
        """
        self.actions = []
        self.closed = []
        self.pipeCount = 0
        self.O_RDWR = -1
        self.O_NOCTTY = -2
        self.WNOHANG = -4
        self.WEXITSTATUS = lambda x: 0
        self.WIFEXITED = lambda x: 1
        self.seteuidCalls = []
        self.setegidCalls = [] 
Example 15
Project: kbe_server   Author: xiaohaoppy   File: test_getpass.py    (license) View Source Project 5 votes vote down vote up
def test_uses_tty_directly(self):
        with mock.patch('os.open') as open, \
                mock.patch('io.FileIO') as fileio, \
                mock.patch('io.TextIOWrapper') as textio:
            # By setting open's return value to None the implementation will
            # skip code we don't care about in this test.  We can mock this out
            # fully if an alternate implementation works differently.
            open.return_value = None
            getpass.unix_getpass()
            open.assert_called_once_with('/dev/tty',
                                         os.O_RDWR | os.O_NOCTTY)
            fileio.assert_called_once_with(open.return_value, 'w+')
            textio.assert_called_once_with(fileio.return_value) 
Example 16
Project: pwning-tools   Author: peternguyen93   File: Pwn.py    (license) View Source Project 5 votes vote down vote up
def pty_make_controlling_tty(self,tty_fd):
		# borrow this code from pwntools
		child_name = os.ttyname(tty_fd)
		# Disconnect from controlling tty. Harmless if not already connected.
		try:
			fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
			if fd >= 0:
				os.close(fd)
			# which exception, shouldnt' we catch explicitly .. ?
		except OSError:
			# Already disconnected. This happens if running inside cron.
			pass

		os.setsid()

		# Verify we are disconnected from controlling tty
		# by attempting to open it again.
		try:
			fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
			if fd >= 0:
				os.close(fd)
				raise Exception('Failed to disconnect from ' +
						'controlling tty. It is still possible to open /dev/tty.')
		# which exception, shouldnt' we catch explicitly .. ?
		except OSError:
			# Good! We are disconnected from a controlling tty.
			pass
		
		# Verify we can open child pty.
		fd = os.open(child_name, os.O_RDWR)
		if fd < 0:
			raise Exception("Could not open child pty, " + child_name)
		else:
			os.close(fd)

		# Verify we now have a controlling tty.
		fd = os.open("/dev/tty", os.O_WRONLY)
		if fd < 0:
			raise Exception("Could not open controlling tty, /dev/tty")
		else:
			os.close(fd) 
Example 17
Project: yatta_reader   Author: sound88   File: _fork_pty.py    (license) View Source Project 5 votes vote down vote up
def pty_make_controlling_tty(tty_fd):
    '''This makes the pseudo-terminal the controlling tty. This should be
    more portable than the pty.fork() function. Specifically, this should
    work on Solaris. '''

    child_name = os.ttyname(tty_fd)

    # Disconnect from controlling tty, if any.  Raises OSError of ENXIO
    # if there was no controlling tty to begin with, such as when
    # executed by a cron(1) job.
    try:
        fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
        os.close(fd)
    except OSError as err:
        if err.errno != errno.ENXIO:
            raise

    os.setsid()

    # Verify we are disconnected from controlling tty by attempting to open
    # it again.  We expect that OSError of ENXIO should always be raised.
    try:
        fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
        os.close(fd)
        raise ExceptionPexpect("OSError of errno.ENXIO should be raised.")
    except OSError as err:
        if err.errno != errno.ENXIO:
            raise

    # Verify we can open child pty.
    fd = os.open(child_name, os.O_RDWR)
    os.close(fd)

    # Verify we now have a controlling tty.
    fd = os.open("/dev/tty", os.O_WRONLY)
    os.close(fd) 
Example 18
Project: tools   Author: InfraSIM   File: __init__.py    (license) View Source Project 5 votes vote down vote up
def __pty_make_controlling_tty(self, tty_fd):
        '''This makes the pseudo-terminal the controlling tty. This should be
        more portable than the pty.fork() function. Specifically, this should
        work on Solaris. '''

        child_name = os.ttyname(tty_fd)

        # Disconnect from controlling tty, if any.  Raises OSError of ENXIO
        # if there was no controlling tty to begin with, such as when
        # executed by a cron(1) job.
        try:
            fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
            os.close(fd)
        except OSError as err:
            if err.errno != errno.ENXIO:
                raise

        os.setsid()

        # Verify we are disconnected from controlling tty by attempting to open
        # it again.  We expect that OSError of ENXIO should always be raised.
        try:
            fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
            os.close(fd)
            raise ExceptionPexpect("OSError of errno.ENXIO should be raised.")
        except OSError as err:
            if err.errno != errno.ENXIO:
                raise

        # Verify we can open child pty.
        fd = os.open(child_name, os.O_RDWR)
        os.close(fd)

        # Verify we now have a controlling tty.
        fd = os.open("/dev/tty", os.O_WRONLY)
        os.close(fd) 
Example 19
Project: sardana   Author: sardana-org   File: pexpect23.py    (license) View Source Project 5 votes vote down vote up
def __pty_make_controlling_tty(self, tty_fd):
        """This makes the pseudo-terminal the controlling tty. This should be
        more portable than the pty.fork() function. Specifically, this should
        work on Solaris. """

        child_name = os.ttyname(tty_fd)

        # Disconnect from controlling tty if still connected.
        fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
        if fd >= 0:
            os.close(fd)

        os.setsid()

        # Verify we are disconnected from controlling tty
        try:
            fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
            if fd >= 0:
                os.close(fd)
                raise ExceptionPexpect, "Error! We are not disconnected from a controlling tty."
        except:
            # Good! We are disconnected from a controlling tty.
            pass

        # Verify we can open child pty.
        fd = os.open(child_name, os.O_RDWR)
        if fd < 0:
            raise ExceptionPexpect, "Error! Could not open child pty, " + child_name
        else:
            os.close(fd)

        # Verify we now have a controlling tty.
        fd = os.open("/dev/tty", os.O_WRONLY)
        if fd < 0:
            raise ExceptionPexpect, "Error! Could not open controlling tty, /dev/tty"
        else:
            os.close(fd) 
Example 20
Project: gcodeplot   Author: arpruss   File: serialposix.py    (license) View Source Project 4 votes vote down vote up
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) 
Example 21
Project: bitio   Author: whaleygeek   File: serialposix.py    (license) View Source Project 4 votes vote down vote up
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) 
Example 22
Project: pwndemo   Author: zh-explorer   File: process.py    (license) View Source Project 4 votes vote down vote up
def __pty_make_controlling_tty(self, tty_fd):
        '''This makes the pseudo-terminal the controlling tty. This should be
        more portable than the pty.fork() function. Specifically, this should
        work on Solaris. '''

        child_name = os.ttyname(tty_fd)

        # Disconnect from controlling tty. Harmless if not already connected.
        try:
            fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
            if fd >= 0:
                os.close(fd)
        # which exception, shouldnt' we catch explicitly .. ?
        except OSError:
            # Already disconnected. This happens if running inside cron.
            pass

        os.setsid()

        # Verify we are disconnected from controlling tty
        # by attempting to open it again.
        try:
            fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
            if fd >= 0:
                os.close(fd)
                raise Exception('Failed to disconnect from ' +
                    'controlling tty. It is still possible to open /dev/tty.')
        # which exception, shouldnt' we catch explicitly .. ?
        except OSError:
            # Good! We are disconnected from a controlling tty.
            pass

        # Verify we can open child pty.
        fd = os.open(child_name, os.O_RDWR)
        if fd < 0:
            raise Exception("Could not open child pty, " + child_name)
        else:
            os.close(fd)

        # Verify we now have a controlling tty.
        fd = os.open("/dev/tty", os.O_WRONLY)
        if fd < 0:
            raise Exception("Could not open controlling tty, /dev/tty")
        else:
            os.close(fd) 
Example 23
Project: ddt4all   Author: cedricp   File: serialposix.py    (license) View Source Project 4 votes vote down vote up
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) 
Example 24
Project: mt7687-serial-uploader   Author: will127534   File: serialposix.py    (license) View Source Project 4 votes vote down vote up
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 == 22:  # ignore Invalid argument
                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) 
Example 25
Project: Jackal_Velodyne_Duke   Author: MengGuo   File: serialposix.py    (license) View Source Project 4 votes vote down vote up
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) 
Example 26
Project: Jackal_Velodyne_Duke   Author: MengGuo   File: serialposix.py    (license) View Source Project 4 votes vote down vote up
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) 
Example 27
Project: black_zone   Author: zh-explorer   File: process.py    (license) View Source Project 4 votes vote down vote up
def __pty_make_controlling_tty(self, tty_fd):
        '''This makes the pseudo-terminal the controlling tty. This should be
        more portable than the pty.fork() function. Specifically, this should
        work on Solaris. '''

        child_name = os.ttyname(tty_fd)

        # Disconnect from controlling tty. Harmless if not already connected.
        try:
            fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
            if fd >= 0:
                os.close(fd)
        # which exception, shouldnt' we catch explicitly .. ?
        except OSError:
            # Already disconnected. This happens if running inside cron.
            pass

        os.setsid()

        # Verify we are disconnected from controlling tty
        # by attempting to open it again.
        try:
            fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
            if fd >= 0:
                os.close(fd)
                raise Exception('Failed to disconnect from ' +
                    'controlling tty. It is still possible to open /dev/tty.')
        # which exception, shouldnt' we catch explicitly .. ?
        except OSError:
            # Good! We are disconnected from a controlling tty.
            pass

        # Verify we can open child pty.
        fd = os.open(child_name, os.O_RDWR)
        if fd < 0:
            raise Exception("Could not open child pty, " + child_name)
        else:
            os.close(fd)

        # Verify we now have a controlling tty.
        fd = os.open("/dev/tty", os.O_WRONLY)
        if fd < 0:
            raise Exception("Could not open controlling tty, /dev/tty")
        else:
            os.close(fd) 
Example 28
Project: ftcommunity-apps   Author: ftCommunity   File: serialposix.py    (license) View Source Project 4 votes vote down vote up
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 (22, 25):  # 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) 
Example 29
Project: ptterm   Author: jonathanslenders   File: posix_utils.py    (license) View Source Project 4 votes vote down vote up
def pty_make_controlling_tty(tty_fd):
    """
    This makes the pseudo-terminal the controlling tty. This should be
    more portable than the pty.fork() function. Specifically, this should
    work on Solaris.

    Thanks to pexpect:
    http://pexpect.sourceforge.net/pexpect.html
    """
    child_name = os.ttyname(tty_fd)

    # Disconnect from controlling tty. Harmless if not already connected.
    try:
        fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
        if fd >= 0:
            os.close(fd)
    # which exception, shouldnt' we catch explicitly .. ?
    except:
        # Already disconnected. This happens if running inside cron.
        pass

    os.setsid()

    # Verify we are disconnected from controlling tty
    # by attempting to open it again.
    try:
        fd = os.open("/dev/tty", os.O_RDWR | os.O_NOCTTY)
        if fd >= 0:
            os.close(fd)
            raise Exception('Failed to disconnect from controlling '
                            'tty. It is still possible to open /dev/tty.')
    # which exception, shouldnt' we catch explicitly .. ?
    except:
        # Good! We are disconnected from a controlling tty.
        pass

    # Verify we can open child pty.
    fd = os.open(child_name, os.O_RDWR)
    if fd < 0:
        raise Exception("Could not open child pty, " + child_name)
    else:
        os.close(fd)

    # Verify we now have a controlling tty.
    if os.name != 'posix':
        # Skip this on BSD-like systems since it will break.
        fd = os.open("/dev/tty", os.O_WRONLY)
        if fd < 0:
            raise Exception("Could not open controlling tty, /dev/tty")
        else:
            os.close(fd)