On Mon, Aug 23, 2010 at 12:59:16PM +0200, Soren Hansen wrote:
On 23-08-2010 12:42, Daniel P. Berrange wrote:
+ /* + * At the moment, the only thing that populates keepfd is + * umlBuildCommandLineChr. We want to close every fd it opens. + */ + openmax = sysconf (_SC_OPEN_MAX); + for (i = 0; i < openmax; i++) + if (FD_ISSET(i, &keepfd)) + close(i); + Unfortunately fdset is one of those limited types that can't represent all possible values. So you need to use FD_SETSIZE instead of _SC_OPEN_MAX here
Ok, I'll fix that up, but just so that I understand: Your concern is that there might be an open file descriptor between FD_SETSIZE and _SC_OPEN_MAX that we don't want to close?
No, its that if you try to run FD_ISSET for i > FD_SETSIZE, you'll likely have an array overflow / out of bounds, so just stop at FD_SETSIZE. When we switch to the new virCommandPtr apis we'll remove this limitation. Regards, Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://deltacloud.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|