api.go

package main

import (
	"libcontainer"
	"os"
)

func startContainer() error {
        config, err := loadConfigFromSomewhere()
        if err != nil {
                return err
        }

        factory, err := libcontainer.New(config)
        if err != nil {
                return err
        }

        process := &libcontainer.Process{
                Stdin:  os.Stdin,
                Stdout: os.Stdout,
                Stderr: os.Stderr,
                Args: []string{
                        "/bin/bash",
                },
                Env: []string{
                        "TERM=xterm",
                },
        }

        container, err := factory.Create("container-1", process)
        if err != nil {
                return err
        }
        defer container.Destroy()

        // container is now running
        pids, err := container.Processes()
        if err != nil {
                return err
        }

        // run another bash shell
        pid, exitCode, err := container.Start(process)
        if err != nil {
                return err
        }
        
        go func() {
        	bashExitCode := <-exitCode
        	
        	log.Printf("bash exited with %d", bashExitCode)
        }()

        // freeze everything
        if err := container.Pause(); err != nil {
                return err
        }

        // resume
        if err := container.Resume(); err != nil {
                return err
        }

        stats, err := container.Stats()
        if err != nil {
                return err
        }
        
        if err := container.StartFunc(func() error {
        	return syscall.Mknod(...)
    	}); err != nil {
        	return err
    	}

}