On Fri, Aug 16, 2013 at 06:01:25PM +0200, Stéphane Graber wrote: > On Fri, Aug 16, 2013 at 10:36:58AM -0500, Serge Hallyn wrote: > > Quoting Stéphane Graber (stgra...@ubuntu.com): > > > initstate/random doesn't work on bionic, srand/rand works on everything, > > > so let's use that. > > > > Is rand_r available on bionic? > > > > rand() isn't thread-safe. > > Unfortunately no, I actually don't think Bionic has any of the _r > functions. > > Is it actually a problem in this case? It looks like the worst that > could happen is that the random number generator gets re-seeded from > urandom between two calls, which would just make it even more random, > no?
I don't think that's a safe assumption. You could have an rand() call overlap with a srand() call, causing rand() to access invalid state which may cause it to return a non-random number. Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :| ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite! It's a free troubleshooting tool designed for production. Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk _______________________________________________ Lxc-devel mailing list Lxc-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-devel
