[libvirt] [PATCH] Detect bridge name collisions when defining a virtual network
Daniel P. Berrange
berrange at redhat.com
Tue Feb 17 11:27:10 UTC 2009
On Mon, Feb 16, 2009 at 06:39:54PM -0500, Cole Robinson wrote:
> The attached patch is a partial fix for rhbz 479622. If a virtual
> network is defined with an explicit bridge name, make sure it doesn't
> collide with other virtual network bridge names.
> +int virNetworkBridgeInUse(const virNetworkObjListPtr nets,
> + const char *bridge)
> +{
> + unsigned int i;
> +
> + for (i = 0 ; i < nets->count ; i++) {
> + if (nets->objs[i]->def->bridge &&
> + STREQ(nets->objs[i]->def->bridge, bridge))
> + return 1;
> + }
> +
This isn't thread-safe - you need to use virNetworkObjLock/Unlock
around each access, and mandate that the network driver is locked
before calling this.
Daniel
--
|: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :|
|: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :|
|: http://autobuild.org -o- http://search.cpan.org/~danberr/ :|
|: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|
More information about the libvir-list
mailing list