framework: Privacy Guard

 * Introduce a new privacy feature which allows the user to run an
   application with reduced visibility into his or her personal data.
 * Adds a per-application flag and simple API to determine if this flag
   is enabled for the current or calling process.
 * This flag can be used by content providers to decide if they should
   return a limited/empty dataset.

Change-Id: Id7c54d728e63acb2b02a2a9322930b54949f6c5d

1 files changed, 10 insertions, 0 deletions

diff --git a/core/java/android/app/ContextImpl.java b/core/java/android/app/ContextImpl.java
index 4d9f11e..21fbc1f 100644
--- a/core/java/android/app/ContextImpl.java
+++ b/core/java/android/app/ContextImpl.java
@@ -1550,6 +1550,16 @@ class ContextImpl extends Context {
     }
 
     @Override
+    public boolean isPrivacyGuardEnabled() {
+        try {
+            return ActivityManagerNative.getDefault().isPrivacyGuardEnabledForProcess(Binder.getCallingPid());
+        } catch (RemoteException e) {
+            Log.e(TAG, e.getMessage(), e);
+        }
+        return false;
+    }
+
+    @Override
     public int checkPermission(String permission, int pid, int uid) {
         if (permission == null) {
             throw new IllegalArgumentException("permission is null");