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gh-77046: os.pipe() sets _O_NOINHERIT flag on fds (#113817)

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On Windows, set _O_NOINHERIT flag on file descriptors
created by os.pipe() and io.WindowsConsoleIO.

Add test_pipe_spawnl() to test_os.

Co-authored-by: Zackery Spytz <zspytz@gmail.com>
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Victor Stinner 2024-01-10 23:02:17 +01:00 • committed by GitHub
parent e82b096335
commit 1d75fa43a2
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5 changed files with 68 additions and 6 deletions
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8
Doc/library/msvcrt.rst
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@ -75,10 +75,14 @@ File Operations
.. function:: open_osfhandle(handle, flags)
Create a C runtime file descriptor from the file handle *handle*. The *flags*
parameter should be a bitwise OR of :const:`os.O_APPEND`, :const:`os.O_RDONLY`,
and :const:`os.O_TEXT`. The returned file descriptor may be used as a parameter
parameter should be a bitwise OR of :const:`os.O_APPEND`,
:const:`os.O_RDONLY`, :const:`os.O_TEXT` and :const:`os.O_NOINHERIT`.
The returned file descriptor may be used as a parameter
to :func:`os.fdopen` to create a file object.
The file descriptor is inheritable by default. Pass :const:`os.O_NOINHERIT`
flag to make it non inheritable.
.. audit-event:: msvcrt.open_osfhandle handle,flags msvcrt.open_osfhandle