From: Gregory P. Smith <greg@krypto.org>
Date: Sun, 25 Mar 2018 17:27:59 +0000 (-0700)
Subject: Clarify fd inheritance when close_fds=False. (GH-6240)
X-Git-Tag: v3.8.0a1~2040
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=dfb6e54dd8dbd735f55109ad8ee9dfcb6178ede9;p=thirdparty%2FPython%2Fcpython.git

Clarify fd inheritance when close_fds=False. (GH-6240)

Clarify the subprocess documentation.
---

diff --git a/Doc/library/subprocess.rst b/Doc/library/subprocess.rst
index db7a88af6bea..fbf2c3d9fac9 100644
--- a/Doc/library/subprocess.rst
+++ b/Doc/library/subprocess.rst
@@ -459,7 +459,10 @@ functions.
       common use of *preexec_fn* to call os.setsid() in the child.
 
    If *close_fds* is true, all file descriptors except :const:`0`, :const:`1` and
-   :const:`2` will be closed before the child process is executed.
+   :const:`2` will be closed before the child process is executed.  Otherwise
+   when *close_fds* is false, file descriptors obey their inheritable flag
+   as described in :ref:`fd_inheritance`.
+
    On Windows, if *close_fds* is true then no handles will be inherited by the
    child process unless explicitly passed in the ``handle_list`` element of
    :attr:`STARTUPINFO.lpAttributeList`, or by standard handle redirection.