Support per-partition timestamps
update_engine is heading toward supporting partial updates, which an OTA
update can update just a subset of all partitions. In this context, a
single max_timestamp in OTA manifest is insufficient for checking
potential downgrades, as different partitions can have different
timestamps. This CL adds per-partition timestamp support on
update_engine side. update_engine will accept a payload with
per-partition timestamps and reject the update if any partition has an
older timestamp.
Changes made:
1. Add new version field to PartitionUpdate protobuf message.
2. Add new methods to HardwareInterface for fetching/checking
timestamp of each partition.
3. Update delta_performer to invoke new APIs in 2 properly.
4. Add relevant testcases.
Test: unittest
Bug: 162553432
Change-Id: I767343e003fd35ce0d22197b15040488cf30be30
diff --git a/hardware_chromeos.h b/hardware_chromeos.h
index e14ae9a..49fed88 100644
--- a/hardware_chromeos.h
+++ b/hardware_chromeos.h
@@ -63,6 +63,10 @@
bool GetFirstActiveOmahaPingSent() const override;
bool SetFirstActiveOmahaPingSent() override;
void SetWarmReset(bool warm_reset) override;
+ std::string GetVersionForLogging(
+ const std::string& partition_name) const override;
+ bool IsPartitionUpdateValid(const std::string& partition_name,
+ const std::string& new_version) const override;
private:
friend class HardwareChromeOSTest;