[issue15159] Add failover for follow_symlinks and effective_ids where possible

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

I don't like this idea. Normally the system calls wrapped by the os module are fairly atomic. Here you're introducing the possibility for potentially nasty race conditions and exploits.

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nosy: +neologix

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue15159>
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