Pod Volumes From Support

added support for a volumes from container. this flag just required movement of the volumes-from flag declaration
out of the !IsInfra block, and minor modificaions to container_create.go

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

3 files changed, 19 insertions, 0 deletions

diff --git a/libpod/define/pod_inspect.go b/libpod/define/pod_inspect.go
index bc2c1d81f..97e7ffdfb 100644
--- a/libpod/define/pod_inspect.go
+++ b/libpod/define/pod_inspect.go
@@ -63,6 +63,8 @@ type InspectPodData struct {
 	Devices []InspectDevice `json:"devices,omitempty"`
 	// BlkioDeviceReadBps contains the Read/Access limit for the pod's devices
 	BlkioDeviceReadBps []InspectBlkioThrottleDevice `json:"device_read_bps,omitempty"`
+	// VolumesFrom contains the containers that the pod inherits mounts from
+	VolumesFrom []string `json:"volumes_from,omitempty"`
 }
 
 // InspectPodInfraConfig contains the configuration of the pod's infra
diff --git a/libpod/pod.go b/libpod/pod.go
index c0b0a974b..068a835f6 100644
--- a/libpod/pod.go
+++ b/libpod/pod.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"sort"
+	"strings"
 	"time"
 
 	"github.com/containers/podman/v3/libpod/define"
@@ -200,6 +201,21 @@ func (p *Pod) UserNSMode() string {
 	return ""
 }
 
+// CPUQuota returns the pod CPU quota
+func (p *Pod) VolumesFrom() []string {
+	if p.state.InfraContainerID == "" {
+		return nil
+	}
+	infra, err := p.runtime.GetContainer(p.state.InfraContainerID)
+	if err != nil {
+		return nil
+	}
+	if ctrs, ok := infra.config.Spec.Annotations[define.InspectAnnotationVolumesFrom]; ok {
+		return strings.Split(ctrs, ",")
+	}
+	return nil
+}
+
 // Labels returns the pod's labels
 func (p *Pod) Labels() map[string]string {
 	labels := make(map[string]string)
diff --git a/libpod/pod_api.go b/libpod/pod_api.go
index 05349aff5..4ae02fb40 100644
--- a/libpod/pod_api.go
+++ b/libpod/pod_api.go
@@ -668,6 +668,7 @@ func (p *Pod) Inspect() (*define.InspectPodData, error) {
 		Mounts:             inspectMounts,
 		Devices:            devices,
 		BlkioDeviceReadBps: deviceLimits,
+		VolumesFrom:        p.VolumesFrom(),
 	}
 
 	return &inspectData, nil