http://hg.python.org/peps/rev/a9f8eb11b08b changeset: 4708:a9f8eb11b08b user: Victor Stinner <victor.stinner@gmail.com> date: Fri Feb 01 00:48:18 2013 +0100 summary: PEP 433: subprocess clears cloexec flag of pass_fds files: pep-0433.txt | 11 +++-------- 1 files changed, 3 insertions(+), 8 deletions(-) diff --git a/pep-0433.txt b/pep-0433.txt --- a/pep-0433.txt +++ b/pep-0433.txt @@ -174,9 +174,6 @@ should be modified to conform to this PEP. The new ``os.set_cloexec()`` function can be used for example. -XXX Should ``subprocess.Popen`` clear the close-on-exec flag on file -XXX descriptors of the constructor the ``pass_fds`` parameter? - .. note:: See `Close file descriptors after fork`_ for a possible solution for ``fork()`` without ``exec()``. @@ -229,6 +226,9 @@ Add a new command line option ``-e`` and an environment variable ``PYTHONCLOEXEC`` to the set close-on-exec flag by default. +``subprocess`` clears the close-on-exec flag of file descriptors of the +``pass_fds`` parameter. + All functions creating file descriptors in the standard library must respect the default *cloexec* parameter (``sys.getdefaultcloexec()``). @@ -284,11 +284,6 @@ If a file must be inherited by child processes, ``cloexec=False`` parameter can be used. -``subprocess.Popen`` constructor has an ``pass_fds`` parameter to -specify which file descriptors must be inherited. The close-on-exec -flag of these file descriptors must be changed with -``os.set_cloexec()``. - Advantages of setting close-on-exec flag by default: * There are far more programs that are bitten by FD inheritance upon -- Repository URL: http://hg.python.org/peps