boxdd: Fix linux permission

experimental/boxdd/insecure_mode_authorize_linux.go

@@ -0,0 +1,24 @@
+//go:build linux
+
+package main
+
+import (
+	"os"
+
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+func authorizeDisableInsecureMode(identity peerIdentity) error {
+	ownerUserID, err := loadOwner()
+	if err != nil {
+		if os.IsNotExist(err) {
+			return status.Error(codes.PermissionDenied, "the service has no owner")
+		}
+		return err
+	}
+	if ownerUserID != identity.UserID {
+		return status.Error(codes.PermissionDenied, "the service is owned by another user")
+	}
+	return nil
+}