move dependencies to vendor

vendor/github.com/opencontainers/runc/checkpoint.go

@@ -0,0 +1,66 @@
+// +build linux
+
+package main
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	"github.com/codegangsta/cli"
+	"github.com/opencontainers/runc/libcontainer"
+)
+
+var checkpointCommand = cli.Command{
+	Name:  "checkpoint",
+	Usage: "checkpoint a running container",
+	Flags: []cli.Flag{
+		cli.StringFlag{Name: "image-path", Value: "", Usage: "path for saving criu image files"},
+		cli.StringFlag{Name: "work-path", Value: "", Usage: "path for saving work files and logs"},
+		cli.BoolFlag{Name: "leave-running", Usage: "leave the process running after checkpointing"},
+		cli.BoolFlag{Name: "tcp-established", Usage: "allow open tcp connections"},
+		cli.BoolFlag{Name: "ext-unix-sk", Usage: "allow external unix sockets"},
+		cli.BoolFlag{Name: "shell-job", Usage: "allow shell jobs"},
+		cli.StringFlag{Name: "page-server", Value: "", Usage: "ADDRESS:PORT of the page server"},
+		cli.BoolFlag{Name: "file-locks", Usage: "handle file locks, for safety"},
+	},
+	Action: func(context *cli.Context) {
+		container, err := getContainer(context)
+		if err != nil {
+			fatal(err)
+		}
+		options := criuOptions(context)
+		// these are the mandatory criu options for a container
+		setPageServer(context, options)
+		if err := container.Checkpoint(options); err != nil {
+			fatal(err)
+		}
+	},
+}
+
+func getCheckpointImagePath(context *cli.Context) string {
+	imagePath := context.String("image-path")
+	if imagePath == "" {
+		imagePath = getDefaultImagePath(context)
+	}
+	return imagePath
+}
+
+func setPageServer(context *cli.Context, options *libcontainer.CriuOpts) {
+	// xxx following criu opts are optional
+	// The dump image can be sent to a criu page server
+	if psOpt := context.String("page-server"); psOpt != "" {
+		addressPort := strings.Split(psOpt, ":")
+		if len(addressPort) != 2 {
+			fatal(fmt.Errorf("Use --page-server ADDRESS:PORT to specify page server"))
+		}
+		port_int, err := strconv.Atoi(addressPort[1])
+		if err != nil {
+			fatal(fmt.Errorf("Invalid port number"))
+		}
+		options.PageServer = libcontainer.CriuPageServerInfo{
+			Address: addressPort[0],
+			Port:    int32(port_int),
+		}
+	}
+}