88 lines
1.8 KiB
Go
88 lines
1.8 KiB
Go
|
// Copyright 2015 CoreOS, 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 main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"os"
|
||
|
|
"path/filepath"
|
||
|
|
"strings"
|
||
|
|
|
||
|
|
"github.com/containernetworking/cni/libcni"
|
||
|
|
)
|
||
|
|
|
||
|
|
const (
|
||
|
|
EnvCNIPath = "CNI_PATH"
|
||
|
|
EnvNetDir = "NETCONFPATH"
|
||
|
|
|
||
|
|
DefaultNetDir = "/etc/cni/net.d"
|
||
|
|
|
||
|
|
CmdAdd = "add"
|
||
|
|
CmdDel = "del"
|
||
|
|
)
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
if len(os.Args) < 3 {
|
||
|
|
usage()
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
netdir := os.Getenv(EnvNetDir)
|
||
|
|
if netdir == "" {
|
||
|
|
netdir = DefaultNetDir
|
||
|
|
}
|
||
|
|
netconf, err := libcni.LoadConf(netdir, os.Args[2])
|
||
|
|
if err != nil {
|
||
|
|
exit(err)
|
||
|
|
}
|
||
|
|
|
||
|
|
netns := os.Args[3]
|
||
|
|
|
||
|
|
cninet := &libcni.CNIConfig{
|
||
|
|
Path: strings.Split(os.Getenv(EnvCNIPath), ":"),
|
||
|
|
}
|
||
|
|
|
||
|
|
rt := &libcni.RuntimeConf{
|
||
|
|
ContainerID: "cni",
|
||
|
|
NetNS: netns,
|
||
|
|
IfName: "eth0",
|
||
|
|
}
|
||
|
|
|
||
|
|
switch os.Args[1] {
|
||
|
|
case CmdAdd:
|
||
|
|
_, err := cninet.AddNetwork(netconf, rt)
|
||
|
|
exit(err)
|
||
|
|
case CmdDel:
|
||
|
|
exit(cninet.DelNetwork(netconf, rt))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func usage() {
|
||
|
|
exe := filepath.Base(os.Args[0])
|
||
|
|
|
||
|
|
fmt.Fprintf(os.Stderr, "%s: Add or remove network interfaces from a network namespace\n", exe)
|
||
|
|
fmt.Fprintf(os.Stderr, " %s %s <net> <netns>\n", exe, CmdAdd)
|
||
|
|
fmt.Fprintf(os.Stderr, " %s %s <net> <netns>\n", exe, CmdDel)
|
||
|
|
os.Exit(1)
|
||
|
|
}
|
||
|
|
|
||
|
|
func exit(err error) {
|
||
|
|
if err != nil {
|
||
|
|
fmt.Fprintf(os.Stderr, "%s\n", err)
|
||
|
|
os.Exit(1)
|
||
|
|
}
|
||
|
|
os.Exit(0)
|
||
|
|
}
|