Merge "Fix issue with acquiring singleton content provider from another user" into sc-dev am: a575e65fdb

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14463094

Change-Id: I7d406948f0e2c212e3658498fdab3bb5768e2cbd

services/core/java/com/android/server/am/ContentProviderConnection.java

@@ -19,6 +19,7 @@ package com.android.server.am;
 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_PROVIDER;
 import static com.android.server.am.ActivityManagerDebugConfig.TAG_AM;
 
+import android.annotation.UserIdInt;
 import android.os.Binder;
 import android.os.SystemClock;
 import android.util.Slog;
@@ -52,15 +53,21 @@ public final class ContentProviderConnection extends Binder {
     // The provider of this connection is now dead.
     public boolean dead;
 
+    // The original user id when this connection was requested, it could be different from
+    // the client's user id because the client could request to access a content provider
+    // living in a different user if it has the permission.
+    @UserIdInt final int mExpectedUserId;
+
     // For debugging.
     private int mNumStableIncs;
     private int mNumUnstableIncs;
 
     public ContentProviderConnection(ContentProviderRecord _provider, ProcessRecord _client,
-            String _clientPackage) {
+            String _clientPackage, @UserIdInt int _expectedUserId) {
         provider = _provider;
         client = _client;
         clientPackage = _clientPackage;
+        mExpectedUserId = _expectedUserId;
         createTime = SystemClock.elapsedRealtime();
     }
 

services/core/java/com/android/server/am/ContentProviderHelper.java

@@ -150,6 +150,7 @@ public class ContentProviderHelper {
         ContentProviderConnection conn = null;
         ProviderInfo cpi = null;
         boolean providerRunning = false;
+        final int expectedUserId = userId;
         synchronized (mService) {
             long startTime = SystemClock.uptimeMillis();
 
@@ -239,7 +240,8 @@ public class ContentProviderHelper {
 
                     // Return the provider instance right away since it already exists.
                     conn = incProviderCountLocked(r, cpr, token, callingUid, callingPackage,
-                            callingTag, stable, true, startTime, mService.mProcessList);
+                            callingTag, stable, true, startTime, mService.mProcessList,
+                            expectedUserId);
 
                     checkTime(startTime, "getContentProviderImpl: before updateOomAdj");
                     final int verifiedAdj = cpr.proc.mState.getVerifiedAdj();
@@ -490,7 +492,7 @@ public class ContentProviderHelper {
 
                 mProviderMap.putProviderByName(name, cpr);
                 conn = incProviderCountLocked(r, cpr, token, callingUid, callingPackage, callingTag,
-                        stable, false, startTime, mService.mProcessList);
+                        stable, false, startTime, mService.mProcessList, expectedUserId);
                 if (conn != null) {
                     conn.waiting = true;
                 }
@@ -1286,7 +1288,7 @@ public class ContentProviderHelper {
     private ContentProviderConnection incProviderCountLocked(ProcessRecord r,
             final ContentProviderRecord cpr, IBinder externalProcessToken, int callingUid,
             String callingPackage, String callingTag, boolean stable, boolean updateLru,
-            long startTime, ProcessList processList) {
+            long startTime, ProcessList processList, @UserIdInt int expectedUserId) {
         if (r == null) {
             cpr.addExternalProcessHandleLocked(externalProcessToken, callingUid, callingTag);
             return null;
@@ -1303,7 +1305,8 @@ public class ContentProviderHelper {
         }
 
         // Create a new ContentProviderConnection.  The reference count is known to be 1.
-        ContentProviderConnection conn = new ContentProviderConnection(cpr, r, callingPackage);
+        ContentProviderConnection conn = new ContentProviderConnection(cpr, r, callingPackage,
+                expectedUserId);
         conn.startAssociationIfNeeded();
         conn.initializeCount(stable);
         cpr.connections.add(conn);

services/core/java/com/android/server/am/ContentProviderRecord.java

@@ -189,7 +189,6 @@ final class ContentProviderRecord implements ComponentName.WithComponentName {
      */
     void onProviderPublishStatusLocked(boolean status) {
         final int numOfConns = connections.size();
-        final int userId = UserHandle.getUserId(appInfo.uid);
         for (int i = 0; i < numOfConns; i++) {
             final ContentProviderConnection conn = connections.get(i);
             if (conn.waiting && conn.client != null) {
@@ -201,7 +200,7 @@ final class ContentProviderRecord implements ComponentName.WithComponentName {
                                 + appInfo.uid + " for provider "
                                 + info.authority + ": launching app became null");
                         EventLogTags.writeAmProviderLostProcess(
-                                userId,
+                                UserHandle.getUserId(appInfo.uid),
                                 appInfo.packageName,
                                 appInfo.uid, info.authority);
                     } else {
@@ -217,7 +216,7 @@ final class ContentProviderRecord implements ComponentName.WithComponentName {
                     try {
                         thread.notifyContentProviderPublishStatus(
                                 newHolder(status ? conn : null, false),
-                                info.authority, userId, status);
+                                info.authority, conn.mExpectedUserId, status);
                     } catch (RemoteException e) {
                     }
                 }

services/tests/mockingservicestests/src/com/android/server/am/MockingOomAdjusterTests.java

@@ -2078,7 +2078,7 @@ public class MockingOomAdjusterTests {
             doReturn(hasExternalProviders).when(record).hasExternalProcessHandles();
         }
         ContentProviderConnection conn = spy(new ContentProviderConnection(record, client,
-                client.info.packageName));
+                client.info.packageName, UserHandle.getUserId(client.uid)));
         record.connections.add(conn);
         client.mProviders.addProviderConnection(conn);
         return record;