FM / python

/usr/lib/python3/dist-packages/twisted/python/

/usr/lib/python3/dist-packages/twisted/python

Name	Size	Mode	Actions
test/	-	0755	rm
_pydoctortemplates/	-	0755	rm
__pycache__/	-	0755	rm
compat.py	23194	0644	edit dl rm
components.py	14295	0644	edit dl rm
constants.py	544	0644	edit dl rm
context.py	4024	0644	edit dl rm
deprecate.py	26775	0644	edit dl rm
failure.py	26638	0644	edit dl rm
fakepwd.py	6138	0644	edit dl rm
filepath.py	58887	0644	edit dl rm
formmethod.py	11460	0644	edit dl rm
htmlizer.py	3541	0644	edit dl rm
lockfile.py	7718	0644	edit dl rm
log.py	22472	0644	edit dl rm
logfile.py	10083	0644	edit dl rm
modules.py	27141	0644	edit dl rm
monkey.py	2227	0644	edit dl rm
procutils.py	1419	0644	edit dl rm
randbytes.py	3959	0644	edit dl rm
rebuild.py	9268	0644	edit dl rm
reflect.py	19477	0644	edit dl rm
release.py	1192	0644	edit dl rm
roots.py	7404	0644	edit dl rm
runtime.py	6270	0644	edit dl rm
sendmsg.py	3420	0644	edit dl rm
shortcut.py	2253	0644	edit dl rm
syslog.py	3730	0644	edit dl rm
systemd.py	2834	0644	edit dl rm
text.py	5482	0644	edit dl rm
threadable.py	3297	0644	edit dl rm
threadpool.py	9840	0644	edit dl rm
twisted-completion.zsh	1371	0644	edit dl rm
url.py	244	0644	edit dl rm
urlpath.py	9084	0644	edit dl rm
usage.py	35010	0644	edit dl rm
util.py	27931	0644	edit dl rm
versions.py	322	0644	edit dl rm
win32.py	4317	0644	edit dl rm
zippath.py	9237	0644	edit dl rm
zipstream.py	9757	0644	edit dl rm
_appdirs.py	788	0644	edit dl rm
_inotify.py	3455	0644	edit dl rm
_oldstyle.py	2593	0644	edit dl rm
_release.py	18548	0644	edit dl rm
_setup.py	12953	0644	edit dl rm
_shellcomp.py	24830	0644	edit dl rm
_textattributes.py	9079	0644	edit dl rm
_tzhelper.py	3192	0644	edit dl rm
_url.py	253	0644	edit dl rm
__init__.py	674	0644	edit dl rm

Edit: /usr/lib/python3/dist-packages/twisted/python/_inotify.py (3455B)

# -*- test-case-name: twisted.internet.test.test_inotify -*-
# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.

"""
Very low-level ctypes-based interface to Linux inotify(7).

ctypes and a version of libc which supports inotify system calls are
required.
"""

import ctypes
import ctypes.util

class INotifyError(Exception):
    """
    Unify all the possible exceptions that can be raised by the INotify API.
    """

def init():
    """
    Create an inotify instance and return the associated file descriptor.
    """
    fd = libc.inotify_init()
    if fd < 0:
        raise INotifyError("INotify initialization error.")
    return fd

def add(fd, path, mask):
    """
    Add a watch for the given path to the inotify file descriptor, and return
    the watch descriptor.

@param fd: The file descriptor returned by C{libc.inotify_init}.
    @type fd: L{int}

@param path: The path to watch via inotify.
    @type path: L{twisted.python.filepath.FilePath}

@param mask: Bitmask specifying the events that inotify should monitor.
    @type mask: L{int}
    """
    wd = libc.inotify_add_watch(fd, path.asBytesMode().path, mask)
    if wd < 0:
        raise INotifyError("Failed to add watch on '%r' - (%r)" % (path, wd))
    return wd

def remove(fd, wd):
    """
    Remove the given watch descriptor from the inotify file descriptor.
    """
    # When inotify_rm_watch returns -1 there's an error:
    # The errno for this call can be either one of the following:
    #  EBADF: fd is not a valid file descriptor.
    #  EINVAL: The watch descriptor wd is not valid; or fd is
    #          not an inotify file descriptor.
    #
    # if we can't access the errno here we cannot even raise
    # an exception and we need to ignore the problem, one of
    # the most common cases is when you remove a directory from
    # the filesystem and that directory is observed. When inotify
    # tries to call inotify_rm_watch with a non existing directory
    # either of the 2 errors might come up because the files inside
    # it might have events generated way before they were handled.
    # Unfortunately only ctypes in Python 2.6 supports accessing errno:
    #  http://bugs.python.org/issue1798 and in order to solve
    # the problem for previous versions we need to introduce
    # code that is quite complex:
    #  http://stackoverflow.com/questions/661017/access-to-errno-from-python
    #
    # See #4310 for future resolution of this issue.
    libc.inotify_rm_watch(fd, wd)

def initializeModule(libc):
    """
    Initialize the module, checking if the expected APIs exist and setting the
    argtypes and restype for C{inotify_init}, C{inotify_add_watch}, and
    C{inotify_rm_watch}.
    """
    for function in ("inotify_add_watch", "inotify_init", "inotify_rm_watch"):
        if getattr(libc, function, None) is None:
            raise ImportError("libc6 2.4 or higher needed")
    libc.inotify_init.argtypes = []
    libc.inotify_init.restype = ctypes.c_int

libc.inotify_rm_watch.argtypes = [
        ctypes.c_int, ctypes.c_int]
    libc.inotify_rm_watch.restype = ctypes.c_int

libc.inotify_add_watch.argtypes = [
        ctypes.c_int, ctypes.c_char_p, ctypes.c_uint32]
    libc.inotify_add_watch.restype = ctypes.c_int

name = ctypes.util.find_library('c')
if not name:
    raise ImportError("Can't find C library.")
libc = ctypes.cdll.LoadLibrary(name)
initializeModule(libc)

cmd: