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moby--moby/daemon/copy.go

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package daemon
import (
"io"
"github.com/docker/docker/engine"
)
func (daemon *Daemon) ContainerCopy(job *engine.Job) engine.Status {
if len(job.Args) != 2 {
return job.Errorf("Usage: %s CONTAINER RESOURCE\n", job.Name)
}
var (
name = job.Args[0]
resource = job.Args[1]
)
if container := daemon.Get(name); container != nil {
data, err := container.Copy(resource)
if err != nil {
return job.Error(err)
}
defer data.Close()
if _, err := io.Copy(job.Stdout, data); err != nil {
return job.Error(err)
}
return engine.StatusOK
}
return job.Errorf("No such container: %s", name)
}