From 2d45bd539765805d5040c4fff91090a4debc9742 Mon Sep 17 00:00:00 2001
From: Ruslan Tkhakokhov <rthakohov@google.com>
Date: Tue, 2 May 2023 16:30:45 +0000
Subject: [PATCH] Clear calling identity n
 BackupManager#reportDelayedRestoreResult

The method binds BackupTransport, which needs to happen from system
process.

Bug: 280047012
Test: 1. Modify TelephonyBackupAgent to call
         BackupManager#reportDelayedRestoreResult
      2. Observe there's no exception.
Change-Id: I84ee31fa7d08f1f4714e303c33e64ed61503c452
---
 .../com/android/server/backup/BackupManagerService.java  | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/services/backup/java/com/android/server/backup/BackupManagerService.java b/services/backup/java/com/android/server/backup/BackupManagerService.java
index 3a7aa855ea90a..ce9cdc2aeab5a 100644
--- a/services/backup/java/com/android/server/backup/BackupManagerService.java
+++ b/services/backup/java/com/android/server/backup/BackupManagerService.java
@@ -1619,7 +1619,14 @@ public class BackupManagerService extends IBackupManager.Stub {
                         /* caller */ "reportDelayedRestoreResult()");
 
         if (userBackupManagerService != null) {
-            userBackupManagerService.reportDelayedRestoreResult(packageName, results);
+            // Clear as the method binds to BackupTransport, which needs to happen from system
+            // process.
+            final long oldId = Binder.clearCallingIdentity();
+            try {
+                userBackupManagerService.reportDelayedRestoreResult(packageName, results);
+            } finally {
+                Binder.restoreCallingIdentity(oldId);
+            }
         }
     }