On Thu, 7 Jun 2007, Ulrich Drepper wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Eric Dumazet wrote: > > I am afraid randomization wont really work if /sbin/init or /bin/bash > > for example uses one (or more) unseq fd : > > The 'random base' will be propagated at fork()/exec() time ? > > The base certainly should be reset o fork. Yes, this might expand the > region in which descriptors are allocated due to inherited descriptors. > But I consider this the application's problem and it usually is not > really an issue. Apps have to explicitly request using the new > descriptors and they can use CLOEXEC (CLOFORK) correctly.
This is kinda fishy. We'll end up with very large map with lots of unused space in them. What we can sanily do, is re-random the base if no fds are in there (of course CLOFORK and CLOEXEC do not count). - Davide - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
