Blacklist versions as part of Rollback along with unittests.
This CL adds version blacklisting as part of AU Rollback. A few additional
things:
1) Since this pref must persist across rollback I have introduced a
powerwash_safe_prefs as part of system_state that will persist across
powerwashes.
2) Fixed bug where we needed to read the device policy (which is read during an
update_check before Rollback would work).
3) Some refactoring to move pref constants to constants.
4) Passing keepimg into our powerwash command so we don't wipe the old
partitions.
BUG=chromium:252589 chromium:254217
TEST=Unittests + test on device + using rollback with and without powerwash
checking preserve state.
Change-Id: I991fad944594944425fd9941e10b30a919f2b83b
Reviewed-on: https://gerrit.chromium.org/gerrit/59518
Reviewed-by: Chris Sosa <sosa@chromium.org>
Tested-by: Chris Sosa <sosa@chromium.org>
Commit-Queue: Chris Sosa <sosa@chromium.org>
diff --git a/constants.h b/constants.h
index f2dfc5a..dc39d5a 100644
--- a/constants.h
+++ b/constants.h
@@ -17,6 +17,12 @@
// The contents of the powerwash marker file.
extern const char kPowerwashCommand[];
+// Directory for AU prefs that are preserved across powerwash.
+extern const char kPowerwashSafePrefsDir[];
+
+// The location where we store the AU preferences (state etc).
+extern const char kPrefsDirectory[];
+
// Path to the stateful partition on the root filesystem.
extern const char kStatefulPartition[];
@@ -37,6 +43,7 @@
extern const char kPrefsPayloadAttemptNumber[];
extern const char kPrefsPreviousVersion[];
extern const char kPrefsResumedUpdateFailures[];
+extern const char kPrefsRollbackVersion[];
extern const char kPrefsSystemUpdatedMarker[];
extern const char kPrefsTotalBytesDownloaded[];
extern const char kPrefsUpdateCheckCount[];