update_engine: Change DLC metadata path
Change the location of the DLC metadata from /var/lib/dlc to
/var/lib/update_engine/dlc_prefs/ to make update_engine the owner of
metadata.
BUG=chromium:912666
TEST=cros_workon_make update_engine --test
TEST=install and uninstall DLCs on DUT. Check new prefs path.
Change-Id: I75f5506eee1abc834ad89a7cf363f42e384b695b
Reviewed-on: https://chromium-review.googlesource.com/c/aosp/platform/system/update_engine/+/2140007
Tested-by: Andrew Lassalle <andrewlassalle@chromium.org>
Commit-Queue: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Jae Hoon Kim <kimjae@chromium.org>
Reviewed-by: Amin Hassani <ahassani@chromium.org>
diff --git a/common/constants.cc b/common/constants.cc
index 793ce97..25aa9a8 100644
--- a/common/constants.cc
+++ b/common/constants.cc
@@ -18,8 +18,7 @@
namespace chromeos_update_engine {
-// TODO(andrewlassalle): Move this to the prefs directory.
-const char kDlcMetadataRootpath[] = "/var/lib/dlc/";
+const char kDlcPrefsSubDir[] = "dlc";
const char kPowerwashSafePrefsSubDirectory[] = "update_engine/prefs";