package main import ( "fmt" "os" "github.com/containers/libpod/cmd/podman/cliconfig" "github.com/containers/libpod/cmd/podman/libpodruntime" "github.com/containers/libpod/libpod" "github.com/pkg/errors" "github.com/sirupsen/logrus" "github.com/spf13/cobra" ) var ( startCommand cliconfig.StartValues startDescription = ` podman start Starts one or more containers. The container name or ID can be used. ` _startCommand = &cobra.Command{ Use: "start", Short: "Start one or more containers", Long: startDescription, RunE: func(cmd *cobra.Command, args []string) error { startCommand.InputArgs = args startCommand.GlobalFlags = MainGlobalOpts return startCmd(&startCommand) }, Example: `podman start --latest podman start 860a4b231279 5421ab43b45 podman start --interactive --attach imageID`, } ) func init() { startCommand.Command = _startCommand startCommand.SetUsageTemplate(UsageTemplate()) flags := startCommand.Flags() flags.BoolVarP(&startCommand.Attach, "attach", "a", false, "Attach container's STDOUT and STDERR") flags.StringVar(&startCommand.DetachKeys, "detach-keys", "", "Override the key sequence for detaching a container. Format is a single character [a-Z] or ctrl- where is one of: a-z, @, ^, [, , or _") flags.BoolVarP(&startCommand.Interactive, "interactive", "i", false, "Keep STDIN open even if not attached") flags.BoolVarP(&startCommand.Latest, "latest", "l", false, "Act on the latest container podman is aware of") flags.BoolVar(&startCommand.SigProxy, "sig-proxy", true, "Proxy received signals to the process (default true if attaching, false otherwise)") } func startCmd(c *cliconfig.StartValues) error { args := c.InputArgs if len(args) < 1 && !c.Latest { return errors.Errorf("you must provide at least one container name or id") } attach := c.Attach if len(args) > 1 && attach { return errors.Errorf("you cannot start and attach multiple containers at once") } sigProxy := c.SigProxy if sigProxy && !attach { if c.Flag("sig-proxy").Changed { return errors.Wrapf(libpod.ErrInvalidArg, "you cannot use sig-proxy without --attach") } else { sigProxy = false } } runtime, err := libpodruntime.GetRuntime(&c.PodmanCommand) if err != nil { return errors.Wrapf(err, "error creating libpod runtime") } defer runtime.Shutdown(false) if c.Latest { lastCtr, err := runtime.GetLatestContainer() if err != nil { return errors.Wrapf(err, "unable to get latest container") } args = append(args, lastCtr.ID()) } ctx := getContext() var lastError error for _, container := range args { ctr, err := runtime.LookupContainer(container) if err != nil { if lastError != nil { fmt.Fprintln(os.Stderr, lastError) } lastError = errors.Wrapf(err, "unable to find container %s", container) continue } ctrState, err := ctr.State() if err != nil { return errors.Wrapf(err, "unable to get container state") } ctrRunning := ctrState == libpod.ContainerStateRunning if attach { inputStream := os.Stdin if !c.Interactive { inputStream = nil } // attach to the container and also start it not already running // If the container is in a pod, also set to recursively start dependencies err = startAttachCtr(ctr, os.Stdout, os.Stderr, inputStream, c.DetachKeys, sigProxy, !ctrRunning, ctr.PodID() != "") if errors.Cause(err) == libpod.ErrDetach { // User manually detached // Exit cleanly immediately exitCode = 0 return nil } if ctrRunning { return err } if err != nil { return errors.Wrapf(err, "unable to start container %s", ctr.ID()) } if ecode, err := ctr.Wait(); err != nil { if errors.Cause(err) == libpod.ErrNoSuchCtr { // The container may have been removed // Go looking for an exit file ctrExitCode, err := readExitFile(runtime.GetConfig().TmpDir, ctr.ID()) if err != nil { logrus.Errorf("Cannot get exit code: %v", err) exitCode = 127 } else { exitCode = ctrExitCode } } } else { exitCode = int(ecode) } return nil } if ctrRunning { fmt.Println(ctr.ID()) continue } // Handle non-attach start // If the container is in a pod, also set to recursively start dependencies if err := ctr.Start(ctx, ctr.PodID() != ""); err != nil { if lastError != nil { fmt.Fprintln(os.Stderr, lastError) } lastError = errors.Wrapf(err, "unable to start container %q", container) continue } fmt.Println(container) } return lastError }