[RESTRICT AUTOMERGE] Revert "Persist destroyed staged sessions until they are cleaned up"

Revert submission 16575908-dont_abandon_child_qt_dev

Reason for revert:  Reverting CVE-2021-39624 on qt-dev
Reverted Changes:
I4ede6b7a4:Persist destroyed staged sessions until they are c...
Ib0ba9f378:Don't abandon child sessions (1/n)

Change-Id: I50ab96061b2e0fa016a0fbdb5773ccc5f2397ac6

services/core/java/com/android/server/pm/PackageInstallerService.java

@@ -659,7 +659,7 @@ public class PackageInstallerService extends IPackageInstaller.Stub implements
         session = new PackageInstallerSession(mInternalCallback, mContext, mPm, this,
                 mInstallThread.getLooper(), mStagingManager, sessionId, userId,
                 installerPackageName, callingUid, params, createdMillis, stageDir, stageCid, false,
-                false, false, false, null, SessionInfo.INVALID_ID, false, false, false,
+                false, false, null, SessionInfo.INVALID_ID, false, false, false,
                 SessionInfo.STAGED_SESSION_NO_ERROR, "");
 
         synchronized (mSessions) {
@@ -809,7 +809,7 @@ public class PackageInstallerService extends IPackageInstaller.Stub implements
         synchronized (mSessions) {
             final PackageInstallerSession session = mSessions.get(sessionId);
 
-            return (session != null && !(session.isStaged() && session.isDestroyed()))
+            return session != null
                     ? session.generateInfoForCaller(true /*withIcon*/, Binder.getCallingUid())
                     : null;
         }
@@ -830,8 +830,7 @@ public class PackageInstallerService extends IPackageInstaller.Stub implements
         synchronized (mSessions) {
             for (int i = 0; i < mSessions.size(); i++) {
                 final PackageInstallerSession session = mSessions.valueAt(i);
-                if (session.userId == userId && !session.hasParentSessionId()
-                        && !(session.isStaged() && session.isDestroyed())) {
+                if (session.userId == userId && !session.hasParentSessionId()) {
                     result.add(session.generateInfoForCaller(false, callingUid));
                 }
             }

services/core/java/com/android/server/pm/PackageInstallerSession.java

@@ -151,7 +151,6 @@ public class PackageInstallerSession extends IPackageInstallerSession.Stub {
     private static final String ATTR_SESSION_STAGE_CID = "sessionStageCid";
     private static final String ATTR_PREPARED = "prepared";
     private static final String ATTR_COMMITTED = "committed";
-    private static final String ATTR_DESTROYED = "destroyed";
     private static final String ATTR_SEALED = "sealed";
     private static final String ATTR_MULTI_PACKAGE = "multiPackage";
     private static final String ATTR_PARENT_SESSION_ID = "parentSessionId";
@@ -414,8 +413,8 @@ public class PackageInstallerSession extends IPackageInstallerSession.Stub {
             PackageSessionProvider sessionProvider, Looper looper, StagingManager stagingManager,
             int sessionId, int userId,
             String installerPackageName, int installerUid, SessionParams params, long createdMillis,
-            File stageDir, String stageCid, boolean prepared, boolean committed, boolean destroyed,
-            boolean sealed, @Nullable int[] childSessionIds, int parentSessionId, boolean isReady,
+            File stageDir, String stageCid, boolean prepared, boolean committed, boolean sealed,
+            @Nullable int[] childSessionIds, int parentSessionId, boolean isReady,
             boolean isFailed, boolean isApplied, int stagedSessionErrorCode,
             String stagedSessionErrorMessage) {
         mCallback = callback;
@@ -450,7 +449,6 @@ public class PackageInstallerSession extends IPackageInstallerSession.Stub {
 
         mPrepared = prepared;
         mCommitted = committed;
-        mDestroyed = destroyed;
         mStagedSessionReady = isReady;
         mStagedSessionFailed = isFailed;
         mStagedSessionApplied = isApplied;
@@ -561,13 +559,6 @@ public class PackageInstallerSession extends IPackageInstallerSession.Stub {
         }
     }
 
-    /** {@hide} */
-    boolean isDestroyed() {
-        synchronized (mLock) {
-            return mDestroyed;
-        }
-    }
-
     /** Returns true if a staged session has reached a final state and can be forgotten about  */
     public boolean isStagedAndInTerminalState() {
         synchronized (mLock) {
@@ -2430,7 +2421,7 @@ public class PackageInstallerSession extends IPackageInstallerSession.Stub {
      */
     void write(@NonNull XmlSerializer out, @NonNull File sessionsDir) throws IOException {
         synchronized (mLock) {
-            if (mDestroyed && !params.isStaged) {
+            if (mDestroyed) {
                 return;
             }
 
@@ -2452,7 +2443,6 @@ public class PackageInstallerSession extends IPackageInstallerSession.Stub {
             }
             writeBooleanAttribute(out, ATTR_PREPARED, isPrepared());
             writeBooleanAttribute(out, ATTR_COMMITTED, isCommitted());
-            writeBooleanAttribute(out, ATTR_DESTROYED, isDestroyed());
             writeBooleanAttribute(out, ATTR_SEALED, isSealed());
 
             writeBooleanAttribute(out, ATTR_MULTI_PACKAGE, params.isMultiPackage);
@@ -2554,7 +2544,6 @@ public class PackageInstallerSession extends IPackageInstallerSession.Stub {
         final String stageCid = readStringAttribute(in, ATTR_SESSION_STAGE_CID);
         final boolean prepared = readBooleanAttribute(in, ATTR_PREPARED, true);
         final boolean committed = readBooleanAttribute(in, ATTR_COMMITTED);
-        final boolean destroyed = readBooleanAttribute(in, ATTR_DESTROYED);
         final boolean sealed = readBooleanAttribute(in, ATTR_SEALED);
         final int parentSessionId = readIntAttribute(in, ATTR_PARENT_SESSION_ID,
                 SessionInfo.INVALID_ID);
@@ -2642,8 +2631,8 @@ public class PackageInstallerSession extends IPackageInstallerSession.Stub {
         return new PackageInstallerSession(callback, context, pm, sessionProvider,
                 installerThread, stagingManager, sessionId, userId, installerPackageName,
                 installerUid, params, createdMillis, stageDir, stageCid, prepared, committed,
-                destroyed, sealed, childSessionIdsArray, parentSessionId, isReady, isFailed,
-                isApplied, stagedSessionErrorCode, stagedSessionErrorMessage);
+                sealed, childSessionIdsArray, parentSessionId, isReady, isFailed, isApplied,
+                stagedSessionErrorCode, stagedSessionErrorMessage);
     }
 
     /**

services/core/java/com/android/server/pm/StagingManager.java

@@ -99,9 +99,6 @@ public class StagingManager {
         synchronized (mStagedSessions) {
             for (int i = 0; i < mStagedSessions.size(); i++) {
                 final PackageInstallerSession stagedSession = mStagedSessions.valueAt(i);
-                if (stagedSession.isDestroyed()) {
-                    continue;
-                }
                 result.add(stagedSession.generateInfoForCaller(false /*icon*/, callingUid));
             }
         }

services/tests/servicestests/src/com/android/server/pm/PackageInstallerSessionTest.java

@@ -168,7 +168,6 @@ public class PackageInstallerSessionTest {
                 /* stageCid */ null,
                 /* prepared */ true,
                 /* committed */ true,
-                /* destroyed */ staged ? true : false,
                 /* sealed */ false,  // Setting to true would trigger some PM logic.
                 /* childSessionIds */ childSessionIds != null ? childSessionIds : new int[0],
                 /* parentSessionId */ parentSessionId,