go.mod: github.com/Microsoft/hcsshim v0.10.0-rc.7

Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>

vendor/github.com/Microsoft/hcsshim/internal/wclayer/exportlayer.go

@@ -45,6 +45,8 @@ func ExportLayer(ctx context.Context, path string, exportFolderPath string, pare
 type LayerReader interface {
 	// Next advances to the next file and returns the name, size, and file info
 	Next() (string, int64, *winio.FileBasicInfo, error)
+	// LinkInfo returns the number of links and the file identifier for the current file.
+	LinkInfo() (uint32, *winio.FileIDInfo, error)
 	// Read reads data from the current file, in the format of a Win32 backup stream, and
 	// returns the number of bytes read.
 	Read(b []byte) (int, error)
@@ -67,6 +69,11 @@ func NewLayerReader(ctx context.Context, path string, parentLayerPaths []string)
 		trace.StringAttribute("path", path),
 		trace.StringAttribute("parentLayerPaths", strings.Join(parentLayerPaths, ", ")))
 
+	if len(parentLayerPaths) == 0 {
+		// This is a base layer. It gets exported differently.
+		return newBaseLayerReader(path, span), nil
+	}
+
 	exportPath, err := os.MkdirTemp("", "hcs")
 	if err != nil {
 		return nil, err