Ensure the system boots with a halfway sane time/date
Just in case the kernel or vendor glue don't initialize the system time
sensibly, we now make sure the current time at boot is at least up to the
build time of the system disk image.
Bug 36736983
Test: manual
Change-Id: I46f776300ca4f5ad01396fc17c83fc833e1713f9
diff --git a/services/core/java/com/android/server/AlarmManagerService.java b/services/core/java/com/android/server/AlarmManagerService.java
index 8b32c16..21dae4f 100644
--- a/services/core/java/com/android/server/AlarmManagerService.java
+++ b/services/core/java/com/android/server/AlarmManagerService.java
@@ -36,6 +36,7 @@
import android.net.Uri;
import android.os.Binder;
import android.os.Bundle;
+import android.os.Environment;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
@@ -949,6 +950,16 @@
// because kernel doesn't keep this after reboot
setTimeZoneImpl(SystemProperties.get(TIMEZONE_PROPERTY));
+ // Also sure that we're booting with a halfway sensible current time
+ if (mNativeData != 0) {
+ final long systemBuildTime = Environment.getRootDirectory().lastModified();
+ if (System.currentTimeMillis() < systemBuildTime) {
+ Slog.i(TAG, "Current time only " + System.currentTimeMillis()
+ + ", advancing to build time " + systemBuildTime);
+ setKernelTime(mNativeData, systemBuildTime);
+ }
+ }
+
PowerManager pm = (PowerManager) getContext().getSystemService(Context.POWER_SERVICE);
mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "*alarm*");