Python os.fdopen() Examples

def bindiff_export(self, sample, is_64_bit = True, timeout = None):
        """
        Load a sample into IDA Pro, perform autoanalysis and export a BinDiff database.
        :param sample: The sample's path
        :param is_64_bit: If the sample needs to be analyzed by the 64 bit version of IDA
        :param timeout: Timeout for the analysis in seconds
        :return: The file name of the exported bindiff database. The file needs
        to be deleted by the caller. Returns None on error.
        """

        data_to_send = {
            "timeout": timeout,
            "is_64_bit": is_64_bit}
        url = "%s/binexport" % next(self._urls)
        log.debug("curl -XPOST --data '%s' '%s'", json.dumps(data_to_send), url)
        response = requests.post(url, data = data_to_send, files = {os.path.basename(sample): open(sample, "rb")})
        if response.status_code == 200:
            handle, output = tempfile.mkstemp(suffix = ".BinExport")
            with os.fdopen(handle, "wb") as f:
                map(f.write, response.iter_content(1024))
            return output
        else:
            log.error("Bindiff server responded with status code %d: %s", response.status_code, response.content)
            return None 

def get_num_triggering_samples(signature, samples):
    """
        Get number of samples triggering ClamAV signature _signature_.
        :param signature: A dictionary with keys 'type' for the signature type
            and 'signature' for the signature string.
        :param samples: A list of sample paths to scan.
        :returns: The number of samples triggering this signature.
    """
    handle, temp_sig = tempfile.mkstemp(suffix = "." + signature["type"])
    try:
        with os.fdopen(handle, "w") as f:
            f.write(signature["signature"])
        proc_clamscan = subprocess.Popen(["clamscan", 
                                          "-d", temp_sig,
                                          "--no-summary", "--infected"] + samples, 
                                         stdout = subprocess.PIPE,
                                         stderr = subprocess.PIPE)
        stdout, stderr = proc_clamscan.communicate()
        if not stdout:
            return 0
        else:
            return len(stdout.strip().split("\n"))
    finally:
        os.unlink(temp_sig) 

def set(self, key, value, timeout=None):
        if timeout is None:
            timeout = int(time() + self.default_timeout)
        elif timeout != 0:
            timeout = int(time() + timeout)
        filename = self._get_filename(key)
        self._prune()
        try:
            fd, tmp = tempfile.mkstemp(suffix=self._fs_transaction_suffix,
                                       dir=self._path)
            with os.fdopen(fd, 'wb') as f:
                pickle.dump(timeout, f, 1)
                pickle.dump(value, f, pickle.HIGHEST_PROTOCOL)
            rename(tmp, filename)
            os.chmod(filename, self._mode)
        except (IOError, OSError):
            return False
        else:
            return True 

def compare(self, primary, secondary, timeout = None):
        """
        Run BinDiff on the two BinDiff databases.
        :param primary: The first BinExport database
        :param secondary: The second BinExport database
        :param timeout: Timeout for the command in seconds
        :returns: The directory name of the directory with the generated data on the shared volume
        """

        url = "%s/compare" % next(self._urls)
        log.debug("curl -XPOST --form 'timeout=%s' --form 'primary=@%s' --form 'secondary=@%s' '%s'", str(timeout), primary, secondary, url)
        response = requests.post(url, data = {"timeout": timeout}, \
                files = {"primary": open(primary, "rb"), "secondary": open(secondary, "rb")})

        if response.status_code == 200:
            handle, path = tempfile.mkstemp(suffix = ".bindiff.sqlite3")
            with os.fdopen(handle, "wb") as f:
                map(f.write, response.iter_content(1024))
            return path
        else:
            log.error("Bindiff server responded with status code %d: %s", response.status_code, response.content)
            return None 

def open_media(scr, epub, src):
    sfx = os.path.splitext(src)[1]
    fd, path = tempfile.mkstemp(suffix=sfx)
    try:
        with os.fdopen(fd, "wb") as tmp:
            tmp.write(epub.file.read(src))
        # run(VWR +" "+ path, shell=True)
        subprocess.call(
            VWR + [path],
            # shell=True,
            stdout=subprocess.DEVNULL,
            stderr=subprocess.DEVNULL
        )
        k = scr.getch()
    finally:
        os.remove(path)
    return k 

def set(self, key, value, timeout=None):
        if timeout is None:
            timeout = self.default_timeout
        filename = self._get_filename(key)
        self._prune()
        try:
            fd, tmp = tempfile.mkstemp(suffix=self._fs_transaction_suffix,
                                       dir=self._path)
            f = os.fdopen(fd, 'wb')
            try:
                pickle.dump(int(time() + timeout), f, 1)
                pickle.dump(value, f, pickle.HIGHEST_PROTOCOL)
            finally:
                f.close()
            rename(tmp, filename)
            os.chmod(filename, self._mode)
        except (IOError, OSError):
            pass 

def pickle_export(self, sample, is_64_bit = True, timeout = None):
        """
        Load a sample into IDA Pro, perform autoanalysis and export a pickle file. 
        :param sample: The sample's path
        :param is_64_bit: If the sample needs to be analyzed by the 64 bit version of IDA
        :param timeout: Timeout for the analysis in seconds
        :return: The file name of the exported pickle database. The file needs
        to be deleted by the caller. Returns None on error.
        """

        data_to_send = {
            "timeout": timeout,
            "is_64_bit": is_64_bit}
        url = "%s/pickle" % next(self._urls)
        log.debug("curl -XPOST --data '%s' '%s'", json.dumps(data_to_send), url)
        response = requests.post(url, data = data_to_send, files = {os.path.basename(sample): open(sample, "rb")})
        if response.status_code == 200:
            handle, output = tempfile.mkstemp(suffix = ".pickle")
            with os.fdopen(handle, "wb") as f:
                map(f.write, response.iter_content(1024))
            return output
        else:
            log.error("Bindiff server responded with status code %d: %s", response.status_code, response.content)
            return None 

def _create_file_from_fd(pfd):
    """Validates file description and creates a file-like object"""
    # -1 is returned on error: http://man7.org/linux/man-pages/man2/open.2.html#RETURN_VALUE
    if pfd == -1:
        INVALID_ARG_ERRNO = 22
        errno = ctypes.get_errno()
        if errno == INVALID_ARG_ERRNO:
            raise UnableToOpenPerfEvents('Invalid perf event file descriptor: {}, {}. '
                                         'For cgroup based perf counters it may indicate there is '
                                         'no enough hardware counters for measure all metrics!'
                                         'If traceback shows problem in perf_uncore '
                                         'it could be problem with PERF_FORMAT_GROUP in'
                                         'perf_event_attr structure for perf_event_open syscall.'
                                         'Older kernel cannot handle with extended format group.'
                                         'Kernel cannot be 3.10.0-862.el7.x86_64 or lower.'
                                         ''.format(errno, os.strerror(errno)))
        else:
            raise UnableToOpenPerfEvents('Invalid perf event file descriptor: {}, {}.'
                                         .format(errno, os.strerror(errno)))
    return os.fdopen(pfd, 'rb') 

def __init__(self, cfg):
        old_umask = os.umask(cfg.umask)
        fdir = cfg.worker_tmp_dir
        if fdir and not os.path.isdir(fdir):
            raise RuntimeError("%s doesn't exist. Can't create workertmp." % fdir)
        fd, name = tempfile.mkstemp(prefix="wgunicorn-", dir=fdir)

        # allows the process to write to the file
        util.chown(name, cfg.uid, cfg.gid)
        os.umask(old_umask)

        # unlink the file so we don't leak tempory files
        try:
            if not IS_CYGWIN:
                util.unlink(name)
            self._tmp = os.fdopen(fd, 'w+b', 1)
        except:
            os.close(fd)
            raise

        self.spinner = 0 

def cache_to_tempfile(cls, sequence, delete_on_gc=True):
        """
        Write the given sequence to a temporary file as a pickle
        corpus; and then return a ``PickleCorpusView`` view for that
        temporary corpus file.

        :param delete_on_gc: If true, then the temporary file will be
            deleted whenever this object gets garbage-collected.
        """
        try:
            fd, output_file_name = tempfile.mkstemp('.pcv', 'nltk-')
            output_file = os.fdopen(fd, 'wb')
            cls.write(sequence, output_file)
            output_file.close()
            return PickleCorpusView(output_file_name, delete_on_gc)
        except (OSError, IOError) as e:
            raise ValueError('Error while creating temp file: %s' % e)



######################################################################
#{ Block Readers
###################################################################### 

def write_pid_to_pidfile(pidfile_path):
    """ Write the PID in the named PID file.

        Get the numeric process ID (“PID”) of the current process
        and write it to the named file as a line of text.

        """
    open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
    open_mode = 0o644
    pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
    pidfile = os.fdopen(pidfile_fd, 'w')

    # According to the FHS 2.3 section on PID files in /var/run:
    #
    #   The file must consist of the process identifier in
    #   ASCII-encoded decimal, followed by a newline character. For
    #   example, if crond was process number 25, /var/run/crond.pid
    #   would contain three characters: two, five, and newline.

    pid = os.getpid()
    pidfile.write("%s\n" % pid)
    pidfile.close() 

def dump(self, filename=None):
        """
        Save a pickle dump of the crashing object on filename.
        If filename is None, the crash dump is saved on a file created by
        the tempfile module.
        Return the filename.
        """
        if filename is None:
            # This 'temporary file' should actually stay 'forever', i.e. until
            # deleted by the user.
            (fd, filename)=_tempfile.mkstemp(suffix=".pic", prefix="MDPcrash_")
            fl = _os.fdopen(fd, 'w+b', -1)
        else:
            fl = open(filename, 'w+b', -1)
        _cPickle.dump(self.crashing_obj, fl)
        fl.close()
        return filename 

def comparebinaries(path1, path2):
	basepath1 = os.path.basename(path1)
	dirpath1 = os.path.dirname(path1)
	basepath2 = os.path.basename(path2)
	dirpath2 = os.path.dirname(path2)
	## binaries are identical
	if gethash(dirpath1, basepath1) == gethash(dirpath2, basepath2):
		return 0
	difftmp = tempfile.mkstemp()
	os.fdopen(difftmp[0]).close()
	p = subprocess.Popen(["bsdiff", path1, path2, difftmp[1]], stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=True)
	## cleanup
	(stanout, stanerr) = p.communicate()
	diffsize = os.stat(difftmp[1]).st_size
	os.unlink(difftmp[1])
	return diffsize 

def unpackXOR(filename, sig, tempdir=None):
	tmpdir = fwunpack.unpacksetup(tempdir)
	tmpfile = tempfile.mkstemp(dir=tmpdir)
	os.fdopen(tmpfile[0]).close()

	fwunpack.unpackFile(filename, 0, tmpfile[1], tmpdir, modify=True)
	datafile = open(filename)
	datafile.seek(0)
	data = datafile.read(1000000)

	## read data, XOR, write data out again
	f2 = open(tmpfile[1], 'w')
	counter = 0
	while data != '':
		for i in data:
			f2.write(chr(ord(i) ^ ord(signatures[sig][counter])))
			counter = (counter+1)%len(signatures[sig])
		data = datafile.read(1000000)
	f2.close()
	datafile.close()
	return tmpdir 

def __run(self):
        """Runs vulture"""
        errTmp = tempfile.mkstemp()
        errStream = os.fdopen(errTmp[0])
        process = Popen(['vulture', self.__path],
                        stdin=PIPE,
                        stdout=PIPE, stderr=errStream)
        process.stdin.close()
        processStdout = process.stdout.read()
        process.stdout.close()
        errStream.seek(0)
        err = errStream.read()
        errStream.close()
        process.wait()
        try:
            os.unlink(errTmp[1])
        except:
            pass
        return processStdout.decode(DEFAULT_ENCODING), err.strip() 

def write_pid_to_pidfile(pidfile_path):
    """ Write the PID in the named PID file.

        Get the numeric process ID (“PID”) of the current process
        and write it to the named file as a line of text.

        """
    open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
    open_mode = 0o644
    pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
    pidfile = os.fdopen(pidfile_fd, 'w')

    # According to the FHS 2.3 section on PID files in /var/run:
    #
    #   The file must consist of the process identifier in
    #   ASCII-encoded decimal, followed by a newline character. For
    #   example, if crond was process number 25, /var/run/crond.pid
    #   would contain three characters: two, five, and newline.

    pid = os.getpid()
    pidfile.write("%s\n" % pid)
    pidfile.close() 

def run_py(executable, *code):
    """Run the given python code with the given executable."""
    if os.name == 'nt' and len(code) > 1:
        # Windows can't do newlines in arguments...
        oshandle, filename = tempfile.mkstemp()
        with os.fdopen(oshandle, 'w') as f:
            f.write('\n'.join(code))
        cmd = [executable, filename]
        try:
            ret = subprocess.run(cmd, universal_newlines=True, check=True,
                                 stdout=subprocess.PIPE).stdout
        finally:
            os.remove(filename)
    else:
        cmd = [executable, '-c', '\n'.join(code)]
        ret = subprocess.run(cmd, universal_newlines=True, check=True,
                             stdout=subprocess.PIPE).stdout
    return ret.rstrip() 

def _secure_open_write(filename, fmode):
    # We only want to write to this file, so open it in write only mode
    flags = os.O_WRONLY

    # os.O_CREAT | os.O_EXCL will fail if the file already exists, so we only
    #  will open *new* files.
    # We specify this because we want to ensure that the mode we pass is the
    # mode of the file.
    flags |= os.O_CREAT | os.O_EXCL

    # Do not follow symlinks to prevent someone from making a symlink that
    # we follow and insecurely open a cache file.
    if hasattr(os, "O_NOFOLLOW"):
        flags |= os.O_NOFOLLOW

    # On Windows we'll mark this file as binary
    if hasattr(os, "O_BINARY"):
        flags |= os.O_BINARY

    # Before we open our file, we want to delete any existing file that is
    # there
    try:
        os.remove(filename)
    except (IOError, OSError):
        # The file must not exist already, so we can just skip ahead to opening
        pass

    # Open our file, the use of os.O_CREAT | os.O_EXCL will ensure that if a
    # race condition happens between the os.remove and this line, that an
    # error will be raised. Because we utilize a lockfile this should only
    # happen if someone is attempting to attack us.
    fd = os.open(filename, flags, fmode)
    try:
        return os.fdopen(fd, "wb")
    except:
        # An error occurred wrapping our FD in a file object
        os.close(fd)
        raise 

def __init__(self, output_dir):
    if sys.stdout.isatty():
      # stdout needs to be unbuffered since the output is interactive.
      if isinstance(sys.stdout, io.TextIOWrapper):
        # workaround for https://bugs.python.org/issue17404
        sys.stdout = io.TextIOWrapper(sys.stdout.detach(),
                                      line_buffering=True,
                                      write_through=True,
                                      newline='\n')
      else:
        sys.stdout = os.fdopen(sys.stdout.fileno(), 'w', 0)

    self.output_dir = output_dir

    self.total_tasks = 0
    self.finished_tasks = 0
    self.out = Outputter(sys.stdout)
    self.stdout_lock = threading.Lock() 

def _create_ssh_key(keyfile):
    """ Create the public and private ssh keys.

    The specified file name will be the private key and the public one will
    be in a similar file name ending with a '.pub'.

    """
    private_key = rsa.generate_private_key(
        public_exponent=65537, key_size=4096, backend=default_backend()
    )

    private_pem = private_key.private_bytes(
        encoding=serialization.Encoding.PEM,
        format=serialization.PrivateFormat.TraditionalOpenSSL,
        encryption_algorithm=serialization.NoEncryption(),
    )
    with os.fdopen(
        os.open(keyfile, os.O_WRONLY | os.O_CREAT | os.O_EXCL, 0o600), "wb"
    ) as stream:
        stream.write(private_pem)

    public_key = private_key.public_key()
    public_pem = _serialize_public_ssh_key(public_key)
    if public_pem:
        with open(keyfile + ".pub", "wb") as stream:
            stream.write(public_pem) 

def edit(self, text):
        import tempfile

        text = text or ''
        if text and not text.endswith('\n'):
            text += '\n'

        fd, name = tempfile.mkstemp(prefix='editor-', suffix=self.extension)
        try:
            if WIN:
                encoding = 'utf-8-sig'
                text = text.replace('\n', '\r\n')
            else:
                encoding = 'utf-8'
            text = text.encode(encoding)

            f = os.fdopen(fd, 'wb')
            f.write(text)
            f.close()
            timestamp = os.path.getmtime(name)

            self.edit_file(name)

            if self.require_save \
               and os.path.getmtime(name) == timestamp:
                return None

            f = open(name, 'rb')
            try:
                rv = f.read()
            finally:
                f.close()
            return rv.decode('utf-8-sig').replace('\r\n', '\n')
        finally:
            os.unlink(name) 

def _secure_open_write(filename, fmode):
    # We only want to write to this file, so open it in write only mode
    flags = os.O_WRONLY

    # os.O_CREAT | os.O_EXCL will fail if the file already exists, so we only
    #  will open *new* files.
    # We specify this because we want to ensure that the mode we pass is the
    # mode of the file.
    flags |= os.O_CREAT | os.O_EXCL

    # Do not follow symlinks to prevent someone from making a symlink that
    # we follow and insecurely open a cache file.
    if hasattr(os, "O_NOFOLLOW"):
        flags |= os.O_NOFOLLOW

    # On Windows we'll mark this file as binary
    if hasattr(os, "O_BINARY"):
        flags |= os.O_BINARY

    # Before we open our file, we want to delete any existing file that is
    # there
    try:
        os.remove(filename)
    except (IOError, OSError):
        # The file must not exist already, so we can just skip ahead to opening
        pass

    # Open our file, the use of os.O_CREAT | os.O_EXCL will ensure that if a
    # race condition happens between the os.remove and this line, that an
    # error will be raised. Because we utilize a lockfile this should only
    # happen if someone is attempting to attack us.
    fd = os.open(filename, flags, fmode)
    try:
        return os.fdopen(fd, "wb")
    except:
        # An error occurred wrapping our FD in a file object
        os.close(fd)
        raise 

def set(self, key, value, timeout=None, mgmt_element=False):
        # Management elements have no timeout
        if mgmt_element:
            timeout = 0

        # Don't prune on management element update, to avoid loop
        else:
            self._prune()

        timeout = self._normalize_timeout(timeout)
        filename = self._get_filename(key)
        try:
            fd, tmp = tempfile.mkstemp(
                suffix=self._fs_transaction_suffix, dir=self._path
            )
            with os.fdopen(fd, "wb") as f:
                pickle.dump(timeout, f, 1)
                pickle.dump(value, f, pickle.HIGHEST_PROTOCOL)
            rename(tmp, filename)
            os.chmod(filename, self._mode)
        except (IOError, OSError):
            return False
        else:
            # Management elements should not count towards threshold
            if not mgmt_element:
                self._update_count(delta=1)
            return True 

def save(self, session):
        fn = self.get_session_filename(session.sid)
        fd, tmp = tempfile.mkstemp(suffix=_fs_transaction_suffix, dir=self.path)
        f = os.fdopen(fd, "wb")
        try:
            dump(dict(session), f, HIGHEST_PROTOCOL)
        finally:
            f.close()
        try:
            rename(tmp, fn)
            os.chmod(fn, self.mode)
        except (IOError, OSError):
            pass 

def make_temp_file(suffix='', prefix='', text=True):
    if not hasattr(_tdata, 'tempdir'):
        _tdata.tempdir = tempfile.mkdtemp()
        _tmpdirs.append(_tdata.tempdir)
    fid, name = tempfile.mkstemp(suffix=suffix,
                                 prefix=prefix,
                                 dir=_tdata.tempdir,
                                 text=text)
    fo = os.fdopen(fid, 'w')
    return fo, name

# Hooks for colored terminal output.
# See also https://web.archive.org/web/20100314204946/http://www.livinglogic.de/Python/ansistyle 

def start_reading_pty(protocol, pty_fd):
    """
    Make asyncio to read file descriptor of Pty

    :param protocol: protocol of subprocess speaking via Pty
    :param pty_fd: file descriptor of Pty (dialog with subprocess goes that way)
    :return:
    """
    loop, its_new = thread_secure_get_event_loop()

    # Create Protocol classes
    class PtyFdProtocol(asyncio.Protocol):
        def connection_made(self, transport):
            if hasattr(protocol, 'on_pty_open'):
                protocol.on_pty_open()

        def data_received(self, data, recv_time):
            if hasattr(protocol, 'data_received'):
                protocol.data_received(data)

        def connection_lost(self, exc):
            if hasattr(protocol, 'on_pty_close'):
                protocol.on_pty_close(exc)

    # Add the pty's to the read loop
    # Also store the transport, protocol tuple for each call to
    # connect_read_pipe, to prevent the destruction of the protocol
    # class instance, otherwise no data is received.
    fd_transport, fd_protocol = await loop.connect_read_pipe(PtyFdProtocol, os.fdopen(pty_fd, 'rb', 0))
    protocol.pty_fd_transport = fd_transport
    protocol.pty_fd_protocol = fd_protocol 

def __write_token(self):
        """
        Write the current auth_token to the local token file.
        """
        # check if rucio temp directory is there. If not create it with permissions only for the current user
        if not path.isdir(self.token_path):
            try:
                LOG.debug('rucio token folder \'%s\' not found. Create it.' % self.token_path)
                makedirs(self.token_path, 0o700)
            except Exception:
                raise

        # if the file exists check if the stored token is valid. If not request a new one and overwrite the file. Otherwise use the one from the file
        try:
            file_d, file_n = mkstemp(dir=self.token_path)
            with fdopen(file_d, "w") as f_token:
                f_token.write(self.auth_token)
            move(file_n, self.token_file)
            if self.auth_type == 'oidc' and self.token_exp_epoch and self.auth_oidc_refresh_active:
                file_d, file_n = mkstemp(dir=self.token_path)
                with fdopen(file_d, "w") as f_exp_epoch:
                    f_exp_epoch.write(str(self.token_exp_epoch))
                move(file_n, self.token_exp_epoch_file)
        except IOError as error:
            print("I/O error({0}): {1}".format(error.errno, error.strerror))
        except Exception:
            raise 

def update_etc_hosts(overcloud):
    """
    Rewrites /etc/hosts, adding fresh entries for each overcloud node.
    """
    etc_hosts = '/etc/hosts'
    etc_file = open(etc_hosts, 'r')

    new_fd, new_hosts = tempfile.mkstemp()
    new_file = os.fdopen(new_fd, 'w')

    marker = '# Overcloud entries generated by update_ssh_config.py\n'

    # Generate a clean hosts file with old entries removed
    for line in etc_file.readlines():
        words = line.split()
        if ((line == marker) or
                (len(words) == 3 and words[1] in overcloud.keys())):

            continue
        new_file.write(line)

    etc_file.close()

    # Add new entries for the overcloud nodes
    new_file.write(marker)
    for node in sorted(overcloud.keys()):
        new_file.write('{}\n'.format(overcloud[node]))

    new_file.close()
    os.chmod(new_hosts, 0644)
    os.system('sudo mv {} {}'.format(new_hosts, etc_hosts))
    os.system('sudo chown root:root {}'.format(etc_hosts)) 

def acquire(self, blocking=True):
        """Acquire the lock if possible.

        If the lock is in use and ``blocking`` is ``False``, return
        ``False``.

        Otherwise, check every `self.delay` seconds until it acquires
        lock or exceeds `self.timeout` and raises an exception.

        """
        start = time.time()
        while True:
            try:
                fd = os.open(self.lockfile, os.O_CREAT | os.O_EXCL | os.O_RDWR)
                with os.fdopen(fd, 'w') as fd:
                    fd.write('{0}'.format(os.getpid()))
                break
            except OSError as err:
                if err.errno != errno.EEXIST:  # pragma: no cover
                    raise
                if self.timeout and (time.time() - start) >= self.timeout:
                    raise AcquisitionError('Lock acquisition timed out.')
                if not blocking:
                    return False
                time.sleep(self.delay)

        self._locked = True
        return True 

def parsepython((filedir, filepath, unpackdir)):
	comments = []
	strings = []
	pathname = os.path.join(filedir, filepath)

	returndict = {}

	parseiterator = open(pathname, 'r').readline

	parsetokens = tokenize.generate_tokens(parseiterator)

	for p in parsetokens:
	        if p[0] == tokenize.COMMENT:
			comments.append(p[1])
	        elif p[0] == tokenize.STRING:
			strings.append(p[1])

	if comments != [] or strings != []:
		commentsfile = None
		stringsfile = None
		if comments != []:
			## there are comments, so print them to a file
			commentsfile = tempfile.mkstemp(dir=unpackdir)
			for c in comments:
				os.write(commentsfile[0], c)
				os.write(commentsfile[0], "\n")
			os.fdopen(commentsfile[0]).close()
			commentsfile = os.path.basename(commentsfile[1])
		if strings != []:
			## there are comments, so print them to a file
			stringsfile = tempfile.mkstemp(dir=unpackdir)
			for c in strings:
				os.write(stringsfile[0], c)
				os.write(stringsfile[0], "\n")
			os.fdopen(stringsfile[0]).close()
			stringsfile = os.path.basename(stringsfile[1])
		returndict = {'unpackdir': unpackdir, 'commentsfile': commentsfile, 'stringsfile': stringsfile}
		return (filedir, filepath, returndict)
	return None

## walk the Linux kernel directory and process all the Makefiles