Implement PartitionUpdateGenerator for partial updates
Implement the logic in PartitionUpdateGenerator. Here's the summary,
1. finds the a/b partitions (both static & dynamic) on the device
For partitions not included in the payload:
2. calculates the partition hash for filesystem verification
3. generates one SOURCE_COPY operation for each static partition
The order of the partitions are sorted. So the update will resume from
the correct operation in case it's interruptted.
Bug: 157778739
Test: run a partial OTA with boot & system_ext
Change-Id: I5683b85e3c6dab813a33d5144aceb996fd8163d4
diff --git a/common/dynamic_partition_control_interface.h b/common/dynamic_partition_control_interface.h
index 58ebfe4..7289dee 100644
--- a/common/dynamic_partition_control_interface.h
+++ b/common/dynamic_partition_control_interface.h
@@ -21,6 +21,7 @@
#include <memory>
#include <string>
+#include <vector>
#include "update_engine/common/action.h"
#include "update_engine/common/cleanup_previous_update_action_delegate.h"
@@ -118,6 +119,17 @@
// progress, while ResetUpdate() forcefully free previously
// allocated space for snapshot updates.
virtual bool ResetUpdate(PrefsInterface* prefs) = 0;
+
+ // Reads the dynamic partitions metadata from the current slot, and puts the
+ // name of the dynamic partitions with the current suffix to |partitions|.
+ // Returns true on success.
+ virtual bool ListDynamicPartitionsForSlot(
+ uint32_t current_slot, std::vector<std::string>* partitions) = 0;
+
+ // Finds a possible location that list all block devices by name; and puts
+ // the result in |path|. Returns true on success.
+ // Sample result: /dev/block/by-name/
+ virtual bool GetDeviceDir(std::string* path) = 0;
};
} // namespace chromeos_update_engine
diff --git a/common/dynamic_partition_control_stub.cc b/common/dynamic_partition_control_stub.cc
index 903b7ee..cde36af 100644
--- a/common/dynamic_partition_control_stub.cc
+++ b/common/dynamic_partition_control_stub.cc
@@ -67,4 +67,13 @@
return false;
}
+bool DynamicPartitionControlStub::ListDynamicPartitionsForSlot(
+ uint32_t current_slot, std::vector<std::string>* partitions) {
+ return true;
+}
+
+bool DynamicPartitionControlStub::GetDeviceDir(std::string* path) {
+ return true;
+}
+
} // namespace chromeos_update_engine
diff --git a/common/dynamic_partition_control_stub.h b/common/dynamic_partition_control_stub.h
index d8e254e..28e3e6a 100644
--- a/common/dynamic_partition_control_stub.h
+++ b/common/dynamic_partition_control_stub.h
@@ -21,6 +21,7 @@
#include <memory>
#include <string>
+#include <vector>
#include "update_engine/common/dynamic_partition_control_interface.h"
@@ -46,6 +47,10 @@
PrefsInterface* prefs,
CleanupPreviousUpdateActionDelegateInterface* delegate) override;
bool ResetUpdate(PrefsInterface* prefs) override;
+
+ bool ListDynamicPartitionsForSlot(
+ uint32_t current_slot, std::vector<std::string>* partitions) override;
+ bool GetDeviceDir(std::string* path) override;
};
} // namespace chromeos_update_engine