diff --git a/cmds/installd/utils.h b/cmds/installd/utils.h
index 4b56f99..54d77f9 100644
--- a/cmds/installd/utils.h
+++ b/cmds/installd/utils.h
@@ -32,6 +32,7 @@
 
 #define MEASURE_DEBUG 0
 #define FIXUP_DEBUG 0
+#define SDK_DEBUG 1
 
 #define BYPASS_QUOTA 0
 #define BYPASS_SDCARDFS 0
@@ -66,6 +67,9 @@
                                                       userid_t userid, const char* package_name);
 std::string create_data_misc_sdk_sandbox_shared_path(const char* volume_uuid, bool isCeData,
                                                      userid_t userid, const char* package_name);
+std::string create_data_misc_sdk_sandbox_sdk_path(const char* volume_uuid, bool isCeData,
+                                                  userid_t userid, const char* package_name,
+                                                  const char* sdk_name, const char* randomSuffix);
 
 std::string create_data_misc_ce_rollback_base_path(const char* volume_uuid, userid_t user);
 std::string create_data_misc_de_rollback_base_path(const char* volume_uuid, userid_t user);
@@ -130,6 +134,8 @@
 bool is_renamed_deleted_dir(const std::string& path);
 int rename_delete_dir_contents_and_dir(const std::string& pathname, bool ignore_if_missing = true);
 
+int foreach_subdir(const std::string& pathname, std::function<void(const std::string&)> fn);
+
 void cleanup_invalid_package_dirs_under_path(const std::string& pathname);
 
 int delete_dir_contents(const char *pathname,