What is Idmap?

IdmapResMap::Lookup

Who calls ApkAssets::LoadOverlay()?

  // Represents a Runtime Resource Overlay that overlays resources in the logical package.
  struct ConfiguredOverlay {
      // The set of package groups that overlay this package group.
      IdmapResMap overlay_res_maps_;

      // The cookie of the overlay assets.
      ApkAssetsCookie cookie;
  };

What is a ApkAssets?

AssetManager2::BuildDynamicRefTable()

AssetManager2::GetNonSystemOverlays()

LoadedIdmap::Load

createIdmap

com.android.server.om.IdmapDaemon#createIdmap

/home/andy/aosp13/frameworks/base/cmds/idmap2

Idmap::FromContainers

removeIdmap

todo:
/home/andy/aosp13/system/libziparchive

std::function :

bool ForEachFile(const std::string& root_path,
const std::function<void(const StringPiece&, FileType)>& f) const override;

std::ofstream fout(idmap_path);

reinterpret_cast