[libvirt] [PATCH] Detect bridge name collisions when defining a virtual network
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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.
Thanks,
Cole
Attachments:
- libvirt-define-bridge-collisions.patch (text/x-diff — 2.3 KB)
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
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Daniel P. Berrange