[issue4708] os.pipe should return inheritable descriptors (Windows)

STINNER Victor added the comment: The PEP 446 has been implemented in Python 3.4 and all file descriptors and sockets are now created non-inheritable by default. Use os.set_inheritable() to make the pipe fds inheritable. -- resolution: -> fixed status: open -> closed

[issue4708] os.pipe should return inheritable descriptors (Windows)

STINNER Victor added the comment: os.pipe() creates non-inheritable pipes on Windows, whereas it creates inheritable pipes on UNIX. IMO the reason is an implementation artifact: os.pipe() calls CreatePipe() on Windows (native API), whereas it calls pipe() on UNIX (POSIX API). The call to Creat

[issue4708] os.pipe should return inheritable descriptors (Windows)

Changes by Tim Golden : -- assignee: tim.golden -> ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.

[issue4708] os.pipe should return inheritable descriptors (Windows)

STINNER Victor added the comment: Changing the default inheritance value of os.pipe() is not acceptable because it would break backward compatibility. Giving access to Windows extra parameter is nice, but we have to find a way to propose a portable API. That's what I'm trying to do with the PE

[issue4708] os.pipe should return inheritable descriptors (Windows)

Richard Oudkerk added the comment: Oops. I confused os.popen() with os.spawn*(). os.spawnv() IS still implemented using spawnv() in Python 3. -- ___ Python tracker ___

[issue4708] os.pipe should return inheritable descriptors (Windows)

Richard Oudkerk added the comment: > - would improve POSIX compatibility, it mimics what os.pipe() > does on those OS I disagree. On Windows fds can only be inherited if you start processes using the spanwn*() family of functions. If you start them using CreateProcess() then the underlying *

[issue4708] os.pipe should return inheritable descriptors (Windows)

Changes by Antoine Pitrou : -- nosy: +sbt ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org

[issue4708] os.pipe should return inheritable descriptors (Windows)

Christian Heimes added the comment: Victor, this fits nicely with your recent PEP. -- nosy: +christian.heimes, haypo versions: +Python 3.4 -Python 2.6, Python 2.7, Python 3.0, Python 3.1 ___ Python tracker _

[issue4708] os.pipe should return inheritable descriptors (Windows)

Changes by Daniel Goertzen : -- nosy: +Daniel.Goertzen ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: http://ma

[issue4708] os.pipe should return inheritable descriptors (Windows)

Changes by Tim Golden : -- assignee: -> tim.golden nosy: +tim.golden ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscr

[issue4708] os.pipe should return inheritable descriptors (Windows)

Changes by Jesse Noller : -- nosy: +jnoller ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.o

[issue4708] os.pipe should return inheritable descriptors (Windows)

Aaron Brady added the comment: This is currently accomplished in 'multiprocessing.forking' with a 'duplicate' function. Use (line #213): rfd, wfd = os.pipe() # get handle for read end of the pipe and make it inheritable rhandle = duplicate(msvcrt.get_osfhandle(rfd), inheritable

[issue4708] os.pipe should return inheritable descriptors (Windows)

Gabriel Genellina added the comment: Patch to posixmodule.c including test case and documentation updates. Note: I've only run the tests on Windows. -- keywords: +patch Added file: http://bugs.python.org/file12460/inheritable_pipes.diff ___ Python tr

[issue4708] os.pipe should return inheritable descriptors (Windows)

Gabriel Genellina added the comment: >From the thread in c.l.p: Pros (of changing os.pipe() to return inheritable pipes): - as it isn't explicitely documented whether os.pipe() returns inheritable pipes or not, both versions are "right" according to the documentation. - if someone relies

[issue4708] os.pipe should return inheritable descriptors (Windows)

New submission from Aaron Brady : os.pipe should return inheritable descriptors on Windows. Patch below, test attached. New pipe() returns descriptors, which cannot be inherited. However, their permissions are set correctly, so msvcrt.get_osfhandle and msvcrt.open_osfhandle can be used to obta