forked from yamt/midonet-kubernetes
/
utils_linux.go
57 lines (50 loc) · 1.69 KB
/
utils_linux.go
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// Copyright 2015 Tigera Inc
//
// 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 utils
import (
"fmt"
"os"
"github.com/containernetworking/cni/pkg/skel"
"github.com/containernetworking/plugins/pkg/ip"
"github.com/containernetworking/plugins/pkg/ns"
"github.com/sirupsen/logrus"
"github.com/vishvananda/netlink"
)
// CleanUpNamespace deletes the devices in the network namespace.
func CleanUpNamespace(args *skel.CmdArgs, logger *logrus.Entry) error {
// Only try to delete the device if a namespace was passed in.
if args.Netns != "" {
logger.WithFields(logrus.Fields{
"netns": args.Netns,
"iface": args.IfName,
}).Debug("Checking namespace & device exist.")
devErr := ns.WithNetNSPath(args.Netns, func(_ ns.NetNS) error {
_, err := netlink.LinkByName(args.IfName)
return err
})
if devErr == nil {
fmt.Fprintf(os.Stderr, "MidoNet CNI deleting device in netns %s\n", args.Netns)
err := ns.WithNetNSPath(args.Netns, func(_ ns.NetNS) error {
_, err := ip.DelLinkByNameAddr(args.IfName)
return err
})
if err != nil {
return err
}
} else {
logger.WithField("ifName", args.IfName).Info("veth does not exist, no need to clean up.")
}
}
return nil
}