Merge "Prevent committing session while in progress" into tm-qpr-dev am: 98a754b382

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20394007

Change-Id: I34438e2eb3e4f2407aac46afb24f3ca05c1e2726
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

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

@@ -366,6 +366,14 @@ public class PackageInstallerSession extends IPackageInstallerSession.Stub {
     @GuardedBy("mLock")
     private boolean mStageDirInUse = false;
 
+    /**
+     * True if the installation is already in progress. This is used to prevent the caller
+     * from {@link #commit(IntentSender, boolean) committing} the session again while the
+     * installation is still in progress.
+     */
+    @GuardedBy("mLock")
+    private boolean mInstallationInProgress = false;
+
     /** Permissions have been accepted by the user (see {@link #setPermissionsResult}) */
     @GuardedBy("mLock")
     private boolean mPermissionsManuallyAccepted = false;
@@ -1661,6 +1669,14 @@ public class PackageInstallerSession extends IPackageInstallerSession.Stub {
             }
         }
 
+        synchronized (mLock) {
+            if (mInstallationInProgress) {
+                throw new IllegalStateException("Installation is already in progress. Don't "
+                        + "commit session=" + sessionId + " again.");
+            }
+            mInstallationInProgress = true;
+        }
+
         dispatchSessionSealed();
     }