From 7d3202650d8c8ef9d982159f5451f5ba2eb18a20 Mon Sep 17 00:00:00 2001
From: Keun-young Park <keunyoung@google.com>
Date: Fri, 17 Feb 2017 17:48:56 -0800
Subject: [PATCH] set ro.boottime.persistent_properties when persisted props
 are restored

- allows components relying on persisted props to wait for this property.

bug: 35178781
Test: reboots
Change-Id: I06cbf2a6b375654fcc277a2699fceeb23846a241
---
 init/property_service.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/init/property_service.cpp b/init/property_service.cpp
index 04bcb1862..decd6445c 100644
--- a/init/property_service.cpp
+++ b/init/property_service.cpp
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
@@ -49,6 +50,7 @@
 
 #include <fs_mgr.h>
 #include <android-base/file.h>
+#include <android-base/stringprintf.h>
 #include <android-base/strings.h>
 #include "bootimg.h"
 
@@ -57,6 +59,8 @@
 #include "util.h"
 #include "log.h"
 
+using android::base::StringPrintf;
+
 #define PERSISTENT_PROPERTY_DIR  "/data/property"
 #define FSTAB_PREFIX "/fstab."
 #define RECOVERY_MOUNT_POINT "/recovery"
@@ -605,6 +609,8 @@ void load_persist_props(void) {
     load_override_properties();
     /* Read persistent properties after all default values have been loaded. */
     load_persistent_properties();
+    uint64_t start_ns = boot_clock::now().time_since_epoch().count();
+    property_set("ro.boottime.persistent_properties", StringPrintf("%" PRIu64, start_ns).c_str());
 }
 
 void load_recovery_id_prop() {