Pod Volumes Support

added support for the --volume flag in pods using the new infra container design.
users can specify all volume options they can with regular containers

resolves #10379

Signed-off-by: cdoern <cdoern@redhat.com>

4 files changed, 31 insertions, 4 deletions

diff --git a/pkg/api/handlers/libpod/pods.go b/pkg/api/handlers/libpod/pods.go
index cc686c69d..1f03e121e 100644
--- a/pkg/api/handlers/libpod/pods.go
+++ b/pkg/api/handlers/libpod/pods.go
@@ -52,13 +52,11 @@ func PodCreate(w http.ResponseWriter, r *http.Request) {
 			utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "failed to decode specgen"))
 			return
 		}
-		tempSpec := &specgen.SpecGenerator{} // temporary spec since infra cannot be decoded into
-		err = json.Unmarshal(out, tempSpec)  // unmarhal matching options
+		err = json.Unmarshal(out, psg.InfraContainerSpec) // unmarhal matching options
 		if err != nil {
 			utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "failed to decode specgen"))
 			return
 		}
-		psg.InfraContainerSpec = tempSpec // set infra spec equal to temp
 		// a few extra that do not have the same json tags
 		psg.InfraContainerSpec.Name = psg.InfraName
 		psg.InfraContainerSpec.ConmonPidFile = psg.InfraConmonPidFile
diff --git a/pkg/domain/entities/pods.go b/pkg/domain/entities/pods.go
index d9dd0c532..a74725c63 100644
--- a/pkg/domain/entities/pods.go
+++ b/pkg/domain/entities/pods.go
@@ -131,6 +131,7 @@ type PodCreateOptions struct {
 	Cpus               float64
 	CpusetCpus         string
 	Userns             specgen.Namespace
+	Volume             []string
 }
 
 // PodLogsOptions describes the options to extract pod logs.
diff --git a/pkg/specgen/generate/container_create.go b/pkg/specgen/generate/container_create.go
index f82b2a3c6..1c0c92f4f 100644
--- a/pkg/specgen/generate/container_create.go
+++ b/pkg/specgen/generate/container_create.go
@@ -28,15 +28,27 @@ func MakeContainer(ctx context.Context, rt *libpod.Runtime, s *specgen.SpecGener
 		return nil, nil, nil, err
 	}
 
-	// If joining a pod, retrieve the pod for use.
+	// If joining a pod, retrieve the pod for use, and its infra container
 	var pod *libpod.Pod
+	var cont *libpod.Container
+	var config *libpod.ContainerConfig
 	if s.Pod != "" {
 		pod, err = rt.LookupPod(s.Pod)
 		if err != nil {
 			return nil, nil, nil, errors.Wrapf(err, "error retrieving pod %s", s.Pod)
 		}
+		if pod.HasInfraContainer() {
+			cont, err = pod.InfraContainer()
+			if err != nil {
+				return nil, nil, nil, err
+			}
+			config = cont.Config()
+		}
 	}
 
+	if config != nil && (len(config.NamedVolumes) > 0 || len(config.UserVolumes) > 0 || len(config.ImageVolumes) > 0 || len(config.OverlayVolumes) > 0) {
+		s.VolumesFrom = append(s.VolumesFrom, config.ID)
+	}
 	// Set defaults for unset namespaces
 	if s.PidNS.IsDefault() {
 		defaultNS, err := GetDefaultNamespaceMode("pid", rtc, pod)
diff --git a/pkg/specgen/podspecgen.go b/pkg/specgen/podspecgen.go
index 8872a1321..5f72fc47d 100644
--- a/pkg/specgen/podspecgen.go
+++ b/pkg/specgen/podspecgen.go
@@ -72,6 +72,22 @@ type PodBasicConfig struct {
 	// Any containers created within the pod will inherit the pod's userns settings.
 	// Optional
 	Userns Namespace `json:"userns,omitempty"`
+	// Mounts are mounts that will be added to the pod.
+	// These will supersede Image Volumes and VolumesFrom (WIP) volumes where
+	// there are conflicts.
+	// Optional.
+	Mounts []spec.Mount `json:"mounts,omitempty"`
+	// Volumes are named volumes that will be added to the pod.
+	// These will supersede Image Volumes and VolumesFrom  (WIP) volumes where
+	// there are conflicts.
+	// Optional.
+	Volumes []*NamedVolume `json:"volumes,omitempty"`
+	// Overlay volumes are named volumes that will be added to the pod.
+	// Optional.
+	OverlayVolumes []*OverlayVolume `json:"overlay_volumes,omitempty"`
+	// Image volumes bind-mount a container-image mount into the pod's infra container.
+	// Optional.
+	ImageVolumes []*ImageVolume `json:"image_volumes,omitempty"`
 }
 
 // PodNetworkConfig contains networking configuration for a pod.