From e32497c6de3f5ec3d494474da9c7ad04db76ef79 Mon Sep 17 00:00:00 2001
From: Andres Morales <anmorales@google.com>
Date: Wed, 13 Jan 2016 15:28:54 -0800
Subject: [PATCH] Track ro.flash.locked bit to enable/disable OEM unlocking
 pref

if the device is OEM unlocked already, disable the OEM
unlocking pref. If it's locked, enable.

Bug: 26039090
Change-Id: I915f3cf57deef8f5775d466dec59c891c1546b1b
---
 src/com/android/settings/DevelopmentSettings.java | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/com/android/settings/DevelopmentSettings.java b/src/com/android/settings/DevelopmentSettings.java
index a1d97508384..b0a685c4a90 100644
--- a/src/com/android/settings/DevelopmentSettings.java
+++ b/src/com/android/settings/DevelopmentSettings.java
@@ -203,6 +203,7 @@ public class DevelopmentSettings extends SettingsPreferenceFragment
     private static final int RESULT_MOCK_LOCATION_APP = 1001;
 
     private static final String PERSISTENT_DATA_BLOCK_PROP = "ro.frp.pst";
+    private static final String FLASH_LOCKED_PROP = "ro.boot.flash.locked";
 
     private static final int REQUEST_CODE_ENABLE_OEM_UNLOCK = 0;
 
@@ -703,6 +704,7 @@ public class DevelopmentSettings extends SettingsPreferenceFragment
         updateForceResizableOptions();
         updateEnableFreeformWindowsSupportOptions();
         updateWebViewProviderOptions();
+        updateOemUnlockOptions();
         if (mColorTemperaturePreference != null) {
             updateColorTemperature();
         }
@@ -967,6 +969,17 @@ public class DevelopmentSettings extends SettingsPreferenceFragment
         return !SystemProperties.get(PERSISTENT_DATA_BLOCK_PROP).equals("");
     }
 
+    private static boolean enableOemUnlockPreference() {
+        String flashLocked = SystemProperties.get(FLASH_LOCKED_PROP);
+        return !"0".equals(flashLocked);
+    }
+
+    private void updateOemUnlockOptions() {
+        if (mEnableOemUnlock != null) {
+            mEnableOemUnlock.setEnabled(enableOemUnlockPreference());
+        }
+    }
+
     private void updateBugreportOptions() {
         mBugreport.setEnabled(true);
         mBugreportInPower.setEnabled(true);