func (srv *Server) setHostConfig(container *daemon.Container, hostConfig *runconfig.HostConfig) error { // Validate the HostConfig binds. Make sure that: // the source exists for _, bind := range hostConfig.Binds { splitBind := strings.Split(bind, ":") source := splitBind[0] // ensure the source exists on the host _, err := os.Stat(source) if err != nil && os.IsNotExist(err) { err = os.MkdirAll(source, 0755) if err != nil { return fmt.Errorf("Could not create local directory '%s' for bind mount: %s!", source, err.Error()) } } } // Register any links from the host config before starting the container if err := srv.daemon.RegisterLinks(container, hostConfig); err != nil { return err } container.SetHostConfig(hostConfig) container.ToDisk() return nil }