Schematize vold system properties

Properties accessed across partitions are now schematized and will
become APIs to make explicit interfaces among partitions.

Bug: 117924132
Test: m -j
Change-Id: I8e04f643197b6c8a60cc38c6979e41c5de3469f5
Merged-In: Iedfd3c1dda665006ea5410ee787c3ca447ac7db1
(cherry picked from commit c1246e6c36)

Android.bp

@@ -621,6 +621,8 @@ java_defaults {
         "core/java/com/android/server/DropboxLogTags.logtags",
         "core/java/org/chromium/arc/EventLogTags.logtags",
 
+        ":platform-properties",
+
         ":framework-statslog-gen",
     ],
 

core/java/android/os/storage/StorageManager.java

@@ -52,6 +52,7 @@ import android.os.ServiceManager;
 import android.os.ServiceManager.ServiceNotFoundException;
 import android.os.SystemProperties;
 import android.provider.Settings;
+import android.sysprop.VoldProperties;
 import android.system.ErrnoException;
 import android.system.Os;
 import android.system.OsConstants;
@@ -1465,7 +1466,7 @@ public class StorageManager {
      * framework, so no service needs to check for changes during their lifespan
      */
     public static boolean isBlockEncrypting() {
-        final String state = SystemProperties.get("vold.encrypt_progress", "");
+        final String state = VoldProperties.encrypt_progress().orElse("");
         return !"".equalsIgnoreCase(state);
     }
 
@@ -1481,7 +1482,7 @@ public class StorageManager {
      * framework, so no service needs to check for changes during their lifespan
      */
     public static boolean inCryptKeeperBounce() {
-        final String status = SystemProperties.get("vold.decrypt");
+        final String status = VoldProperties.decrypt().orElse("");
         return "trigger_restart_min_framework".equals(status);
     }
 

packages/SystemUI/src/com/android/systemui/statusbar/policy/EncryptionHelper.java

@@ -16,7 +16,7 @@
 
 package com.android.systemui.statusbar.policy;
 
-import android.os.SystemProperties;
+import android.sysprop.VoldProperties;
 
 /**
  * Helper for determining whether the phone is decrypted yet.
@@ -26,7 +26,7 @@ public class EncryptionHelper {
     public static final boolean IS_DATA_ENCRYPTED = isDataEncrypted();
 
     private static boolean isDataEncrypted() {
-        String voldState = SystemProperties.get("vold.decrypt");
+        String voldState = VoldProperties.decrypt().orElse("");
         return "1".equals(voldState) || "trigger_restart_min_framework".equals(voldState);
     }
 }

services/core/java/com/android/server/StorageManagerService.java

@@ -99,6 +99,7 @@ import android.os.storage.VolumeInfo;
 import android.os.storage.VolumeRecord;
 import android.provider.MediaStore;
 import android.provider.Settings;
+import android.sysprop.VoldProperties;
 import android.text.TextUtils;
 import android.text.format.DateUtils;
 import android.util.ArrayMap;
@@ -973,7 +974,7 @@ class StorageManagerService extends IStorageManager.Stub
 
         // On an encrypted device we can't see system properties yet, so pull
         // the system locale out of the mount service.
-        if ("".equals(SystemProperties.get("vold.encrypt_progress"))) {
+        if ("".equals(VoldProperties.encrypt_progress().orElse(""))) {
             copyLocaleFromMountService();
         }
     }

services/core/java/com/android/server/am/ActivityManagerService.java

@@ -364,6 +364,7 @@ import android.provider.Downloads;
 import android.provider.Settings;
 import android.service.voice.IVoiceInteractionSession;
 import android.service.voice.VoiceInteractionManagerInternal;
+import android.sysprop.VoldProperties;
 import android.telecom.TelecomManager;
 import android.text.TextUtils;
 import android.text.format.DateUtils;
@@ -7958,8 +7959,8 @@ public class ActivityManagerService extends IActivityManager.Stub
             SystemProperties.set("sys.boot_completed", "1");
 
             // And trigger dev.bootcomplete if we are not showing encryption progress
-            if (!"trigger_restart_min_framework".equals(SystemProperties.get("vold.decrypt"))
-                    || "".equals(SystemProperties.get("vold.encrypt_progress"))) {
+            if (!"trigger_restart_min_framework".equals(VoldProperties.decrypt().orElse(""))
+                    || "".equals(VoldProperties.encrypt_progress().orElse(""))) {
                 SystemProperties.set("dev.bootcomplete", "1");
             }
             mUserController.sendBootCompleted(

services/java/com/android/server/SystemServer.java

@@ -49,6 +49,7 @@ import android.os.SystemProperties;
 import android.os.Trace;
 import android.os.UserHandle;
 import android.os.storage.IStorageManager;
+import android.sysprop.VoldProperties;
 import android.util.DisplayMetrics;
 import android.util.EventLog;
 import android.util.Slog;
@@ -626,7 +627,7 @@ public final class SystemServer {
         traceEnd();
 
         // Only run "core" apps if we're encrypting the device.
-        String cryptState = SystemProperties.get("vold.decrypt");
+        String cryptState = VoldProperties.decrypt().orElse("");
         if (ENCRYPTING_STATE.equals(cryptState)) {
             Slog.w(TAG, "Detected encryption in progress - only parsing core apps");
             mOnlyCore = true;