On Tue, Nov 04, 2008 at 03:26:55AM +0100, Bruno Haible wrote: > Hi, Hi - sorry, I went on holiday just after you posted this, hence the late response ...
> Richard W.M. Jones wrote: > > This patch adds a 'random' module which implements: > > > > - random > > - srandom > > - initstate > > - setstate > > This is welcome! > > > and replaces: > > > > - rand > > - srand > > - RAND_MAX > > It shouldn't do that. The random/srandom/initstate/setstate and > rand/srand/RAND_MAX facilities are unrelated. See > <http://www.opengroup.org/susv3/functions/random.html> > <http://www.opengroup.org/susv3/functions/rand.html> Interesting ... Good that random doesn't use RAND_MAX. It seems to indicate a bug of sorts in glibc (or at least, in the man pages) though. [...] > If you want to provide an override for the rand() function, it should IMO > 1. not be automatically enabled by the 'random' or 'random_r' modules, > 2. explain in the doc what you mean by not "high quality" of some > implementations (a period less than 2^32? lower bits that are easy to > guess?), and which implementations are affected. My take from this is we need separate modules, rand and random, is that right? The existing random_r module is folded into random. 'rand' is a new module which is advisory for those platforms that believe they may have a losing rand() implementation, eg. ancient versions of Solaris. Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://et.redhat.com/~rjones/virt-df/
