oci: Add volumes field to Container

We add a ContainerVolume struct and store a list of volumes
in the Container object for quick retrieval.

Signed-off-by: Mrunal Patel <mrunalp@gmail.com>

oci/container.go

@@ -45,6 +45,14 @@ type Container struct {
 	stopSignal string
 	imageName  string
 	imageRef   string
+	volumes    []ContainerVolume
+}
+
+// ContainerVolume is a bind mount for the container.
+type ContainerVolume struct {
+	ContainerPath string `json:"container_path"`
+	HostPath      string `json:"host_path"`
+	Readonly      bool   `json:"readonly"`
 }
 
 // ContainerState represents the status of a container.
@@ -198,3 +206,14 @@ func (c *Container) State() *ContainerState {
 	defer c.opLock.Unlock()
 	return c.state
 }
+
+// AddVolume adds a volume to list of container volumes.
+func (c *Container) AddVolume(v ContainerVolume) {
+	c.volumes = append(c.volumes, v)
+}
+
+// Volumes returns the list of container volumes.
+func (c *Container) Volumes() []ContainerVolume {
+	return c.volumes
+
+}

pkg/annotations/annotations.go

@@ -69,6 +69,9 @@ const (
 
 	// StdinOnce is the stdin_once annotation
 	StdinOnce = "io.kubernetes.cri-o.StdinOnce"
+
+	// Volumes is the volumes annotatoin
+	Volumes = "io.kubernetes.cri-o.Volumes"
 )
 
 // ContainerType values