Messages in this thread | | | Date | Sat, 18 May 2002 21:02:18 -0700 | From | Larry McVoy <> | Subject | Re: AUDIT: copy_from_user is a deathtrap. |
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On Sun, May 19, 2002 at 02:01:25PM +1000, Rusty Russell wrote: > But as we all know, it is harder to remove a feature from Linux, than > to get the camel book through the eye of a needle (or something).
It's possible that I'm too tired to have grasped this, but if I have, you're all wet. In all cases, read needs to return the number of bytes successfully moved. If you ask for N and 1/2 of the way through N you are going to get a fault, and you return SEGFAULT, now how can I ever find out that N/2 bytes actually made it out to me? I want to know that. If you are arguing that return N/2 is wrong, you are incorrect. -- --- Larry McVoy lm at bitmover.com http://www.bitmover.com/lm - 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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