func RunIn(containerName string, nsPid int, args []string, env []string) (int, error) {
container, err := createContainer(containerName, nsPid, args, env)
if err != nil {
return -1, fmt.Errorf("error creating container %s", err)
}
pid, err := namespaces.ExecIn(container, container.Command)
if err != nil {
return -1, fmt.Errorf("error execin container %s", err)
}
exitcode, err := utils.WaitOnPid(pid)
if err != nil {
return -1, fmt.Errorf("error waiting on child %s", err)
}
return exitcode, nil
}
func JoinContainer(containerName string, nsPid int, args []string, env []string) error {
container, err := CreateContainer(containerName, nsPid, args, env)
if err != nil {
return fmt.Errorf("error creating container %s", err)
}
pid, err := namespaces.ExecIn(container, container.Command)
if err != nil {
return fmt.Errorf("error exexin container %s", err)
}
exitcode, err := utils.WaitOnPid(pid)
if err != nil {
return fmt.Errorf("error waiting on child %s", err)
}
os.Exit(exitcode)
return nil
}
func execIn(container *libcontainer.Container) error {
f, err := os.Open("/root/nsroot/test")
if err != nil {
return err
}
container.NetNsFd = f.Fd()
pid, err := namespaces.ExecIn(container, &libcontainer.Command{
Env: container.Command.Env,
Args: []string{
newCommand,
},
})
if err != nil {
return fmt.Errorf("error exexin container %s", err)
}
exitcode, err := utils.WaitOnPid(pid)
if err != nil {
return fmt.Errorf("error waiting on child %s", err)
}
os.Exit(exitcode)
return nil
}
