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exec.go
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exec.go
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// 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 ns
import (
"github.com/vishvananda/netns"
"github.com/flatcar/mantle/system/exec"
)
type Cmd struct {
*exec.ExecCmd
NsHandle netns.NsHandle
}
func Command(ns netns.NsHandle, name string, arg ...string) *Cmd {
return &Cmd{
ExecCmd: exec.Command(name, arg...),
NsHandle: ns,
}
}
func (cmd *Cmd) CombinedOutput() ([]byte, error) {
nsExit, err := Enter(cmd.NsHandle)
if err != nil {
return nil, err
}
defer nsExit()
return cmd.ExecCmd.CombinedOutput()
}
func (cmd *Cmd) Output() ([]byte, error) {
nsExit, err := Enter(cmd.NsHandle)
if err != nil {
return nil, err
}
defer nsExit()
return cmd.ExecCmd.Output()
}
func (cmd *Cmd) Run() error {
nsExit, err := Enter(cmd.NsHandle)
if err != nil {
return err
}
defer nsExit()
return cmd.ExecCmd.Run()
}
func (cmd *Cmd) Start() error {
nsExit, err := Enter(cmd.NsHandle)
if err != nil {
return err
}
defer nsExit()
return cmd.ExecCmd.Start()
}