network: don't delete net devs we didn't create

When we didn't create a net dev we should make sure that we don't delete it.  We
can simply check whether we have index for it. If not, we didn't create it.

Closes #1600.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
This commit is contained in:
Christian Brauner 2017-05-30 10:46:02 +02:00
parent f6104dffa3
commit b316d20945
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@ -2873,7 +2873,8 @@ static int instantiate_veth(struct lxc_handler *handler, struct lxc_netdev *netd
return 0;
out_delete:
lxc_netdev_delete_by_name(veth1);
if (netdev->ifindex != 0)
lxc_netdev_delete_by_name(veth1);
if (!netdev->priv.veth_attr.pair)
free(veth1);
free(veth2);
@ -3201,7 +3202,7 @@ bool lxc_delete_network(struct lxc_handler *handler)
/* Explicitly delete host veth device to prevent lingering
* devices. We had issues in LXD around this.
*/
if (netdev->type == LXC_NET_VETH && !am_unpriv()) {
if (netdev->ifindex != 0 && netdev->type == LXC_NET_VETH && !am_unpriv()) {
char *hostveth;
if (netdev->priv.veth_attr.pair) {
hostveth = netdev->priv.veth_attr.pair;