Author: Armin Rigo <ar...@tunes.org> Branch: Changeset: r2394:56d35f3de7ca Date: 2015-11-14 19:44 +0100 http://bitbucket.org/cffi/cffi/changeset/56d35f3de7ca/
Log: Document the SELinux issue with callbacks diff --git a/doc/source/using.rst b/doc/source/using.rst --- a/doc/source/using.rst +++ b/doc/source/using.rst @@ -514,6 +514,16 @@ discouraged: using this a style, we are more likely to forget the callback object too early, when it is still in use. +.. warning:: + + **SELinux** requires that the setting ``deny_execmem`` is left to + its default setting of ``off`` to use callbacks. A fix in cffi was + attempted (see the ``ffi_closure_alloc`` branch), but this branch is + not merged because it creates potential memory corruption with + ``fork()``. For more information, `see here.`__ + +.. __: https://bugzilla.redhat.com/show_bug.cgi?id=1249685 + *New in version 1.2:* If you want to be sure to catch all exceptions, use ``ffi.callback(..., onerror=func)``. If an exception occurs and ``onerror`` is specified, then ``onerror(exception, exc_value, _______________________________________________ pypy-commit mailing list pypy-commit@python.org https://mail.python.org/mailman/listinfo/pypy-commit
