1 files changed, 65 insertions, 0 deletions
diff --git a/cmd/podman/export.go b/cmd/podman/export.go
new file mode 100644
index 000000000..9b498562e
--- /dev/null
+++ b/cmd/podman/export.go
@@ -0,0 +1,65 @@
+package main
+
+import (
+	"os"
+
+	"github.com/pkg/errors"
+	"github.com/sirupsen/logrus"
+	"github.com/urfave/cli"
+)
+
+var (
+	exportFlags = []cli.Flag{
+		cli.StringFlag{
+			Name:  "output, o",
+			Usage: "Write to a file, default is STDOUT",
+			Value: "/dev/stdout",
+		},
+	}
+	exportDescription = "Exports container's filesystem contents as a tar archive" +
+		" and saves it on the local machine."
+	exportCommand = cli.Command{
+		Name:        "export",
+		Usage:       "Export container's filesystem contents as a tar archive",
+		Description: exportDescription,
+		Flags:       exportFlags,
+		Action:      exportCmd,
+		ArgsUsage:   "CONTAINER",
+	}
+)
+
+// exportCmd saves a container to a tarball on disk
+func exportCmd(c *cli.Context) error {
+	if err := validateFlags(c, exportFlags); err != nil {
+		return err
+	}
+
+	runtime, err := getRuntime(c)
+	if err != nil {
+		return errors.Wrapf(err, "could not get runtime")
+	}
+	defer runtime.Shutdown(false)
+
+	args := c.Args()
+	if len(args) == 0 {
+		return errors.Errorf("container id must be specified")
+	}
+	if len(args) > 1 {
+		return errors.Errorf("too many arguments given, need 1 at most.")
+	}
+
+	output := c.String("output")
+	if output == "/dev/stdout" {
+		file := os.Stdout
+		if logrus.IsTerminal(file) {
+			return errors.Errorf("refusing to export to terminal. Use -o flag or redirect")
+		}
+	}
+
+	ctr, err := runtime.LookupContainer(args[0])
+	if err != nil {
+		return errors.Wrapf(err, "error looking up container %q", args[0])
+	}
+
+	return ctr.Export(output)
+}