From 89d2d050a0c5784b7993eaaa08be21ef93084156 Mon Sep 17 00:00:00 2001
From: David Anderson <dvander@google.com>
Date: Tue, 15 Oct 2019 13:22:20 -0700
Subject: Force merges to complete before wiping data or metadata.

After an OTA is applied, a wipe in recovery may overwrite components of
dynamic partitions living in userdata. If the OTA has not yet begun
merging, we mark the current slot unbootable. If the OTA has begun
merging, we wait for the merge to complete. This logic is encapsulated
in libsnapshot.

Bug: 139156011
Test: manual test
Change-Id: Id6544a1b8583afcbba11559d46214ec2e68ffa40
---
 install/wipe_data.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'install/wipe_data.cpp')

diff --git a/install/wipe_data.cpp b/install/wipe_data.cpp
index 82660bef0..287208583 100644
--- a/install/wipe_data.cpp
+++ b/install/wipe_data.cpp
@@ -27,6 +27,7 @@
 #include <android-base/logging.h>
 #include <android-base/stringprintf.h>
 
+#include "install/snapshot_utils.h"
 #include "otautil/dirutil.h"
 #include "recovery_ui/ui.h"
 #include "recovery_utils/logging.h"
@@ -104,6 +105,12 @@ bool WipeCache(RecoveryUI* ui, const std::function<bool()>& confirm_func) {
 bool WipeData(Device* device, bool convert_fbe) {
   RecoveryUI* ui = device->GetUI();
   ui->Print("\n-- Wiping data...\n");
+
+  if (!FinishPendingSnapshotMerges(device)) {
+    ui->Print("Unable to check update status or complete merge, cannot wipe partitions.\n");
+    return false;
+  }
+
   bool success = device->PreWipeData();
   if (success) {
     success &= EraseVolume(DATA_ROOT, ui, convert_fbe);
-- 
cgit v1.2.3