Messages in this thread | | | Date | Thu, 27 Aug 2009 07:22:19 -0700 | From | Ulrich Drepper <> | Subject | Re: [PATCH] open: introduce O_NOSTD |
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On 08/27/2009 06:54 AM, Eric Blake wrote: > I hope that my example shows why doing it in the kernel is desirable - > there is no safe way to keep the pre-O_CLOEXEC efficiency using just the > library, but there IS a way to do it with kernel support:
You're describing a very special case where the performance implications are really minimal and try to argue that is a good enough reason? I don't think so.
If a program really has to do thousands of these safe open calls then it can invest time into opening /dev/null for any of the unallocated descriptors < 3. You can even embed this logic in the safer_open function.
-- ➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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