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Document that multiprocessing treats local same-user processes as trusted #149001

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9 changes: 9 additions & 0 deletions Doc/library/multiprocessing.rst
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Expand Up @@ -2917,6 +2917,15 @@

Suitable authentication keys can also be generated by using :func:`os.urandom`.

This authentication protects :class:`Listener` and :func:`Client` connections,

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py:class reference target not found: Queue [ref.class]

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py:func reference target not found: Pipe [ref.func]
which are reachable by address. It is not applied to the anonymous pipes
created by :func:`Pipe` or used internally by :class:`Queue`.
:mod:`multiprocessing` treats all local processes running as the same user as
trusted; on most operating systems such processes can access each other's pipe
file descriptors regardless. Applications that require isolation between
processes of the same user must arrange it at the operating-system level --
for example, by running workers under a different user account or in a sandbox.


Logging
^^^^^^^
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