Lantao Liu 2955d63c95 Handle empty netns in DEL for loopback and host-device.
Signed-off-by: Lantao Liu <lantaol@google.com>
2018-10-10 10:49:06 -07:00

84 lines
2.0 KiB
Go

// Copyright 2016 CNI authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"fmt"
"github.com/containernetworking/cni/pkg/skel"
"github.com/containernetworking/cni/pkg/types/current"
"github.com/containernetworking/cni/pkg/version"
"github.com/containernetworking/plugins/pkg/ns"
"github.com/vishvananda/netlink"
)
func cmdAdd(args *skel.CmdArgs) error {
args.IfName = "lo" // ignore config, this only works for loopback
err := ns.WithNetNSPath(args.Netns, func(_ ns.NetNS) error {
link, err := netlink.LinkByName(args.IfName)
if err != nil {
return err // not tested
}
err = netlink.LinkSetUp(link)
if err != nil {
return err // not tested
}
return nil
})
if err != nil {
return err // not tested
}
result := current.Result{}
return result.Print()
}
func cmdDel(args *skel.CmdArgs) error {
if args.Netns == "" {
return nil
}
args.IfName = "lo" // ignore config, this only works for loopback
err := ns.WithNetNSPath(args.Netns, func(ns.NetNS) error {
link, err := netlink.LinkByName(args.IfName)
if err != nil {
return err // not tested
}
err = netlink.LinkSetDown(link)
if err != nil {
return err // not tested
}
return nil
})
if err != nil {
return err // not tested
}
return nil
}
func main() {
// TODO: implement plugin version
skel.PluginMain(cmdAdd, cmdGet, cmdDel, version.All, "TODO")
}
func cmdGet(args *skel.CmdArgs) error {
// TODO: implement
return fmt.Errorf("not implemented")
}