commit ddd6e75e54e7c963202a769b021bbaf0925999f8
author Janis Danisevskis <jdanis@google.com> Mon Feb 22 18:46:55 2021 -0800
committer Janis Danisevskis <jdanis@google.com> Tue Feb 23 09:46:39 2021 -0800
tree f09a1663fcc3dfafb86850938bfbdb77ca38a3b9
parent eed69849e36f7aecaf4e68b9cdbdaea5373c5c20

Keystore 2.0: Implement clear namespace.

Implements the clearing of a specific namespace. This is requered for
uninstalling an app.

Test: Uninstall an app and check that all its keys get deleted.
Bug: 176123105
Change-Id: I519519f9381ee70a3dd2a93d77db92a510aa8427

keystore2/aidl/Android.bp

diff --git a/keystore2/aidl/Android.bp b/keystore2/aidl/Android.bp
index d529fa9..c92417b 100644
--- a/keystore2/aidl/Android.bp
+++ b/keystore2/aidl/Android.bp
@@ -118,6 +118,9 @@
 aidl_interface {
     name: "android.security.usermanager",
     srcs: [ "android/security/usermanager/*.aidl" ],
+    imports: [
+        "android.system.keystore2",
+    ],
     unstable: true,
     backend: {
         java: {

keystore2/aidl/android/security/usermanager/IKeystoreUserManager.aidl

diff --git a/keystore2/aidl/android/security/usermanager/IKeystoreUserManager.aidl b/keystore2/aidl/android/security/usermanager/IKeystoreUserManager.aidl
index 3690b1c..83edb1a 100644
--- a/keystore2/aidl/android/security/usermanager/IKeystoreUserManager.aidl
+++ b/keystore2/aidl/android/security/usermanager/IKeystoreUserManager.aidl
@@ -14,11 +14,14 @@
 
 package android.security.usermanager;
 
+import android.system.keystore2.Domain;
+
 // TODO: mark the interface with @SensitiveData when the annotation is ready (b/176110256).
 
 /**
  * IKeystoreUserManager interface exposes the methods for adding/removing users and changing the
  * user's password.
+ * @hide
  */
 interface IKeystoreUserManager {
 
@@ -31,6 +34,7 @@
      * user id.
      *
      * @param userId - Android user id
+     * @hide
      */
     void onUserAdded(in int userId);
 
@@ -42,6 +46,7 @@
      * `ResponseCode::SYSTEM_ERROR` - if failed to delete the keys of the user being deleted.
      *
      * @param userId - Android user id
+     * @hide
      */
     void onUserRemoved(in int userId);
 
@@ -56,6 +61,18 @@
      *
      * @param userId - Android user id
      * @param password - a secret derived from the synthetic password of the user
+     * @hide
      */
     void onUserPasswordChanged(in int userId, in @nullable byte[] password);
+
+    /**
+     * This function deletes all keys within a namespace. It mainly gets called when an app gets
+     * removed and all resources of this app need to be cleaned up.
+     *
+     * @param domain - One of Domain.APP or Domain.SELINUX.
+     * @param nspace - The UID of the app that is to be cleared if domain is Domain.APP or
+     *                 the SEPolicy namespace if domain is Domain.SELINUX.
+     * @hide
+     */
+     void clearNamespace(Domain domain, long nspace);
 }