2 files changed, 17 insertions, 0 deletions
diff --git a/core/java/android/os/image/DynamicSystemManager.java b/core/java/android/os/image/DynamicSystemManager.java
index 7f01cad940ec..e8e47857ecba 100644
--- a/core/java/android/os/image/DynamicSystemManager.java
+++ b/core/java/android/os/image/DynamicSystemManager.java
@@ -269,4 +269,16 @@ public class DynamicSystemManager {
             throw new RuntimeException(e.toString());
         }
     }
+
+    /**
+     * Returns the suggested scratch partition size for overlayFS.
+     */
+    @RequiresPermission(android.Manifest.permission.MANAGE_DYNAMIC_SYSTEM)
+    public long suggestScratchSize() {
+        try {
+            return mService.suggestScratchSize();
+        } catch (RemoteException e) {
+            throw new RuntimeException(e.toString());
+        }
+    }
 }
diff --git a/core/java/android/os/image/IDynamicSystemService.aidl b/core/java/android/os/image/IDynamicSystemService.aidl
index df0a69b47225..a5a40ad55853 100644
--- a/core/java/android/os/image/IDynamicSystemService.aidl
+++ b/core/java/android/os/image/IDynamicSystemService.aidl
@@ -125,4 +125,9 @@ interface IDynamicSystemService
      *                      valid VBMeta block to retrieve the AVB key from.
      */
     boolean getAvbPublicKey(out AvbPublicKey dst);
+
+    /**
+     * Returns the suggested scratch partition size for overlayFS.
+     */
+    long suggestScratchSize();
 }