1 files changed, 74 insertions, 0 deletions
diff --git a/cmd/podman/volumes/prune.go b/cmd/podman/volumes/prune.go
new file mode 100644
index 000000000..197a9da9b
--- /dev/null
+++ b/cmd/podman/volumes/prune.go
@@ -0,0 +1,74 @@
+package volumes
+
+import (
+	"bufio"
+	"context"
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/utils"
+	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+)
+
+var (
+	volumePruneDescription = `Volumes that are not currently owned by a container will be removed.
+
+  The command prompts for confirmation which can be overridden with the --force flag.
+  Note all data will be destroyed.`
+	pruneCommand = &cobra.Command{
+		Use:   "prune",
+		Args:  cobra.NoArgs,
+		Short: "Remove all unused volumes",
+		Long:  volumePruneDescription,
+		RunE:  prune,
+	}
+)
+
+var (
+	pruneOptions entities.VolumePruneOptions
+)
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+		Command: pruneCommand,
+		Parent:  volumeCmd,
+	})
+	flags := pruneCommand.Flags()
+	flags.BoolVarP(&pruneOptions.Force, "force", "f", false, "Do not prompt for confirmation")
+}
+
+func prune(cmd *cobra.Command, args []string) error {
+	var (
+		errs utils.OutputErrors
+	)
+	// Prompt for confirmation if --force is not set
+	if !pruneOptions.Force {
+		reader := bufio.NewReader(os.Stdin)
+		fmt.Println("WARNING! This will remove all volumes not used by at least one container.")
+		fmt.Print("Are you sure you want to continue? [y/N] ")
+		answer, err := reader.ReadString('\n')
+		if err != nil {
+			return errors.Wrapf(err, "error reading input")
+		}
+		if strings.ToLower(answer)[0] != 'y' {
+			return nil
+		}
+	}
+	responses, err := registry.ContainerEngine().VolumePrune(context.Background(), pruneOptions)
+	if err != nil {
+		return err
+	}
+	for _, r := range responses {
+		if r.Err == nil {
+			fmt.Println(r.Id)
+		} else {
+			errs = append(errs, r.Err)
+		}
+	}
+	return errs.PrintErrors()
+}