Messages in this thread | | | Subject | Re: [PATCH] get_random_long() and AT_ENTROPY for auxv, kernel 2.6.21.5 | From | Arjan van de Ven <> | Date | Sun, 24 Jun 2007 21:43:03 -0700 |
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On Sun, 2007-06-24 at 22:45 -0500, Matt Mackall wrote: > On Sun, Jun 24, 2007 at 07:45:04PM +0200, Alexander Gabert wrote: > > Hi Linus, > > hi LKML, > > > > i would like to thank LKML and especially Eric (thanks for the per_cpu > > macro tips and design guidelines!) and the other contributors to this idea. > > > > This time the patch is rather big because it also removes > > get_random_int() and introduces get_random_long() throughout the kernel. > > Stop right there. You still haven't answered my original question. > What is the point of this exercise in the first place, please? > > Am I right in thinking you have three unrelated patches here? > > - something to do with aux vector headers
the primary goal is to pass a random value to userspace at process start; this to save glibc from having to open /dev/urandom on ever program start (which it does now for all apps compiled with -fstack-protector, which in various distros is "everything").
> - sweeping change of get_random_int to get_random_long for no obvious reason
and this is because Alexander wants 2 and not 1 random int to be passed for his own glibc proposed change (combined with get_random_int() being designed for only 4 bytes per process ;-)
-- if you want to mail me at work (you don't), use arjan (at) linux.intel.com Test the interaction between Linux and your BIOS via http://www.linuxfirmwarekit.org
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