Verify the extents for untouched dynamic partitions during partial update
For partial updates, the metadata for untouched dynamic partitions
are just copied over to the target slot. So, verifying the extents
of these partitions in the target metadata should be sufficient for
correctness. This saves the work to read & hash the bytes on these
partitions for each resumed update.
Bug: 151088567
Test: unit tests pass, apply a partial update
Change-Id: I9d40ed2643e145a1546ea17b146fcdcfb91f213f
diff --git a/payload_consumer/filesystem_verifier_action.h b/payload_consumer/filesystem_verifier_action.h
index 7d179df..6a8823a 100644
--- a/payload_consumer/filesystem_verifier_action.h
+++ b/payload_consumer/filesystem_verifier_action.h
@@ -57,8 +57,13 @@
class FilesystemVerifierAction : public InstallPlanAction {
public:
- FilesystemVerifierAction()
- : verity_writer_(verity_writer::CreateVerityWriter()) {}
+ explicit FilesystemVerifierAction(
+ DynamicPartitionControlInterface* dynamic_control)
+ : verity_writer_(verity_writer::CreateVerityWriter()),
+ dynamic_control_(dynamic_control) {
+ CHECK(dynamic_control_);
+ }
+
~FilesystemVerifierAction() override = default;
void PerformAction() override;
@@ -123,6 +128,9 @@
// Write verity data of the current partition.
std::unique_ptr<VerityWriterInterface> verity_writer_;
+ // Verifies the untouched dynamic partitions for partial updates.
+ DynamicPartitionControlInterface* dynamic_control_{nullptr};
+
// Reads and hashes this many bytes from the head of the input stream. When
// the partition starts to be hashed, this field is initialized from the
// corresponding InstallPlan::Partition size which is the total size