Call access(2) on all files/dirs modified by Mtp

External sdcards are accessed through /mnt/media_rw,
so access() each touched file for sdcardfs to update
its metadata.

Java handles single object renames directly so that
is the only place where it is needed.

Bug: 77849654
Test: use mtp with emulated sdcard
Change-Id: Ie460398010f1fe74d8084808a6333b121674362c

1 files changed, 10 insertions, 0 deletions

diff --git a/media/java/android/mtp/MtpDatabase.java b/media/java/android/mtp/MtpDatabase.java
index 7976f67c64a8..e568ef79b4cc 100755
--- a/media/java/android/mtp/MtpDatabase.java
+++ b/media/java/android/mtp/MtpDatabase.java
@@ -35,6 +35,9 @@ import android.provider.MediaStore;
 import android.provider.MediaStore.Audio;
 import android.provider.MediaStore.Files;
 import android.provider.MediaStore.MediaColumns;
+import android.system.ErrnoException;
+import android.system.Os;
+import android.system.OsConstants;
 import android.util.Log;
 import android.view.Display;
 import android.view.WindowManager;
@@ -560,6 +563,13 @@ public class MtpDatabase implements AutoCloseable {
             return MtpConstants.RESPONSE_GENERAL_ERROR;
         Path newPath = obj.getPath();
         boolean success = oldPath.toFile().renameTo(newPath.toFile());
+        try {
+            Os.access(oldPath.toString(), OsConstants.F_OK);
+            Os.access(newPath.toString(), OsConstants.F_OK);
+        } catch (ErrnoException e) {
+            // Ignore. Could fail if the metadata was already updated.
+        }
+
         if (!mManager.endRenameObject(obj, oldPath.getFileName().toString(), success)) {
             Log.e(TAG, "Failed to end rename object");
         }