Windows: Block pulling uplevel images

Signed-off-by: John Howard <jhoward@microsoft.com>

1 files changed, 13 insertions, 2 deletions

diff --git a/plugin/backend_linux.go b/plugin/backend_linux.go
index c86b11f61a..000ee996dc 100644
--- a/plugin/backend_linux.go
+++ b/plugin/backend_linux.go
@@ -33,6 +33,7 @@ import (
 	"github.com/docker/docker/plugin/v2"
 	refstore "github.com/docker/docker/reference"
 	digest "github.com/opencontainers/go-digest"
+	specs "github.com/opencontainers/image-spec/specs-go/v1"
 	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 	"golang.org/x/net/context"
@@ -146,10 +147,15 @@ func (s *tempConfigStore) Get(d digest.Digest) ([]byte, error) {
 	return s.config, nil
 }
 
-func (s *tempConfigStore) RootFSAndOSFromConfig(c []byte) (*image.RootFS, string, error) {
+func (s *tempConfigStore) RootFSFromConfig(c []byte) (*image.RootFS, error) {
 	return configToRootFS(c)
 }
 
+func (s *tempConfigStore) PlatformFromConfig(c []byte) (*specs.Platform, error) {
+	// TODO: LCOW/Plugins. This will need revisiting. For now use the runtime OS
+	return &specs.Platform{OS: runtime.GOOS}, nil
+}
+
 func computePrivileges(c types.PluginConfig) types.PluginPrivileges {
 	var privileges types.PluginPrivileges
 	if c.Network.Type != "null" && c.Network.Type != "bridge" && c.Network.Type != "" {
@@ -534,10 +540,15 @@ func (s *pluginConfigStore) Get(d digest.Digest) ([]byte, error) {
 	return ioutil.ReadAll(rwc)
 }
 
-func (s *pluginConfigStore) RootFSAndOSFromConfig(c []byte) (*image.RootFS, string, error) {
+func (s *pluginConfigStore) RootFSFromConfig(c []byte) (*image.RootFS, error) {
 	return configToRootFS(c)
 }
 
+func (s *pluginConfigStore) PlatformFromConfig(c []byte) (*specs.Platform, error) {
+	// TODO: LCOW/Plugins. This will need revisiting. For now use the runtime OS
+	return &specs.Platform{OS: runtime.GOOS}, nil
+}
+
 type pluginLayerProvider struct {
 	pm     *Manager
 	plugin *v2.Plugin