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bpo-46016: fcntl module add FreeBSD's F_DUP2FD_CLOEXEC flag support. #29993

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Merged
merged 2 commits into from
Dec 8, 2021
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bpo-46016: fcntl module add FreeBSD's F_DUP2FD_CLOEXEC flag support. #29993

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c4b1775
fcntl module add FreeBSD's F_DUP2FD_CLOEXEC flag support.
devnexen Dec 8, 2021
fbaeb28
📜🤖 Added by blurb_it.
blurb-it[bot] Dec 8, 2021
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5 changes: 5 additions & 0 deletions Doc/library/fcntl.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,11 @@ descriptor.
``F_SETPIPE_SZ`` constants, which allow to check and modify a pipe's size
respectively.

.. versionchanged:: 3.11
On FreeBSD, the fcntl module exposes the ``F_DUP2FD`` and ``F_DUP2FD_CLOEXEC``
constants, which allow to duplicate a file descriptor, the latter setting
``FD_CLOEXEC`` flag in addition.

The module defines the following functions:


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8 changes: 8 additions & 0 deletions Doc/whatsnew/3.11.rst
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Expand Up @@ -329,6 +329,14 @@ unicodedata
* The Unicode database has been updated to version 14.0.0. (:issue:`45190`).


fcntl
-----

* On FreeBSD, the `F_DUP2FD` and `F_DUP2FD_CLOEXEC` flags respectively
are supported, the former equals to ``dup2`` usage while the latter set
the ``FD_CLOEXEC`` flag in addition.


Optimizations
=============

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1 change: 1 addition & 0 deletions Misc/NEWS.d/next/Library/2021-12-08-19-15-03.bpo-46016.s9PuyF.rst
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@@ -0,0 +1 @@
Adding `F_DUP2FD` and `F_DUP2FD_CLOEXEC` constants from FreeBSD into the fcntl module.
8 changes: 8 additions & 0 deletions Modules/fcntlmodule.c
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Expand Up @@ -581,6 +581,14 @@ all_ins(PyObject* m)
if (PyModule_AddIntMacro(m, F_NOCACHE)) return -1;
#endif

/* FreeBSD specifics */
#ifdef F_DUP2FD
if (PyModule_AddIntMacro(m, F_DUP2FD)) return -1;
#endif
#ifdef F_DUP2FD_CLOEXEC
if (PyModule_AddIntMacro(m, F_DUP2FD_CLOEXEC)) return -1;
#endif

/* For F_{GET|SET}FL */
#ifdef FD_CLOEXEC
if (PyModule_AddIntMacro(m, FD_CLOEXEC)) return -1;
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