Add "podman volume" command

Add support for podman volume and its subcommands.
The commands supported are:
	podman volume create
	podman volume inspect
	podman volume ls
	podman volume rm
	podman volume prune

This is a tool to manage volumes used by podman. For now it only handle
named volumes, but eventually it will handle all volumes used by podman.

Signed-off-by: umohnani8 <umohnani@redhat.com>

1 files changed, 80 insertions, 0 deletions

diff --git a/libpod/options.go b/libpod/options.go
index 3e43d73f0..352e6a506 100644
--- a/libpod/options.go
+++ b/libpod/options.go
@@ -327,6 +327,22 @@ func WithNamespace(ns string) RuntimeOption {
 	}
 }
 
+// WithVolumePath sets the path under which all named volumes
+// should be created.
+// The path changes based on whethe rthe user is running as root
+// or not.
+func WithVolumePath(volPath string) RuntimeOption {
+	return func(rt *Runtime) error {
+		if rt.valid {
+			return ErrRuntimeFinalized
+		}
+
+		rt.config.VolumePath = volPath
+
+		return nil
+	}
+}
+
 // WithDefaultInfraImage sets the infra image for libpod.
 // An infra image is used for inter-container kernel
 // namespace sharing within a pod. Typically, an infra
@@ -1125,6 +1141,70 @@ func withIsInfra() CtrCreateOption {
 	}
 }
 
+// Volume Creation Options
+
+// WithVolumeName sets the name of the volume.
+func WithVolumeName(name string) VolumeCreateOption {
+	return func(volume *Volume) error {
+		if volume.valid {
+			return ErrVolumeFinalized
+		}
+
+		// Check the name against a regex
+		if !nameRegex.MatchString(name) {
+			return errors.Wrapf(ErrInvalidArg, "name must match regex [a-zA-Z0-9_-]+")
+		}
+		volume.config.Name = name
+
+		return nil
+	}
+}
+
+// WithVolumeLabels sets the labels of the volume.
+func WithVolumeLabels(labels map[string]string) VolumeCreateOption {
+	return func(volume *Volume) error {
+		if volume.valid {
+			return ErrVolumeFinalized
+		}
+
+		volume.config.Labels = make(map[string]string)
+		for key, value := range labels {
+			volume.config.Labels[key] = value
+		}
+
+		return nil
+	}
+}
+
+// WithVolumeDriver sets the driver of the volume.
+func WithVolumeDriver(driver string) VolumeCreateOption {
+	return func(volume *Volume) error {
+		if volume.valid {
+			return ErrVolumeFinalized
+		}
+
+		volume.config.Driver = driver
+
+		return nil
+	}
+}
+
+// WithVolumeOptions sets the options of the volume.
+func WithVolumeOptions(options map[string]string) VolumeCreateOption {
+	return func(volume *Volume) error {
+		if volume.valid {
+			return ErrVolumeFinalized
+		}
+
+		volume.config.Options = make(map[string]string)
+		for key, value := range options {
+			volume.config.Options[key] = value
+		}
+
+		return nil
+	}
+}
+
 // Pod Creation Options
 
 // WithPodName sets the name of the pod.