runtime-tools/generate: adjust LinuxNamespaces

Signed-off-by: Etienne Champetier <e.champetier@ateme.com>

pkg/runtime-tools/generate/generate.go

@@ -117,6 +117,9 @@ func (g *Generator) Adjust(adjust *nri.ContainerAdjustment) error {
 	g.AdjustDevices(adjust.GetLinux().GetDevices())
 	g.AdjustCgroupsPath(adjust.GetLinux().GetCgroupsPath())
 	g.AdjustOomScoreAdj(adjust.GetLinux().GetOomScoreAdj())
+	if err := g.AdjustNamespaces(adjust.GetLinux().GetNamespaces()); err != nil {
+		return err
+	}
 
 	resources := adjust.GetLinux().GetResources()
 	if err := g.AdjustResources(resources); err != nil {
@@ -332,6 +335,25 @@ func (g *Generator) AdjustOomScoreAdj(score *nri.OptionalInt) {
 	}
 }
 
+// AdjustNamespaces adds or replaces namespaces in the OCI Spec.
+func (g *Generator) AdjustNamespaces(namespaces []*nri.LinuxNamespace) error {
+	for _, n := range namespaces {
+		if n == nil {
+			continue
+		}
+		if key, marked := n.IsMarkedForRemoval(); marked {
+			if err := g.RemoveLinuxNamespace(key); err != nil {
+				return err
+			}
+		} else {
+			if err := g.AddOrReplaceLinuxNamespace(n.Type, n.Path); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
 // AdjustDevices adjusts the (Linux) devices in the OCI Spec.
 func (g *Generator) AdjustDevices(devices []*nri.LinuxDevice) {
 	for _, d := range devices {