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Add shutdown assurance

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If something kills system_server before it completes its shutdown
action, the runtime will just restart giving the illusion that a reboot
for an OTA or something else has happened.

To prevent this, write a system property containing the reboot reason
before initiating the shutdown with all the services. If the
system_server is killed before it completes, the next time the main
thread of system_server starts up, it will immediately execute the
shutdown action.

Bug: 3022556
Change-Id: I81723bac333430f04205e7a7b799914d96f170eb
This commit is contained in:
Kenny Root
2010-09-22 10:36:48 -07:00
parent dfc07279fc
commit f547d679c0
2 changed files with 48 additions and 4 deletions
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19
services/java/com/android/server/SystemServer.java
View File

@@ -17,6 +17,7 @@
package com.android.server;
import com.android.server.am.ActivityManagerService;
import com.android.internal.app.ShutdownThread;
import com.android.internal.os.BinderInternal;
import com.android.internal.os.SamplingProfilerIntegration;
import com.trustedlogic.trustednfc.android.server.NfcService;
@@ -89,6 +90,24 @@ class ServerThread extends Thread {
BinderInternal.disableBackgroundScheduling(true);
android.os.Process.setCanSelfBackground(false);
// Check whether we failed to shut down last time we tried.
{
final String shutdownAction = SystemProperties.get(
ShutdownThread.SHUTDOWN_ACTION_PROPERTY, "");
if (shutdownAction != null && shutdownAction.length() > 0) {
boolean reboot = (shutdownAction.charAt(0) == '1');
final String reason;
if (shutdownAction.length() > 1) {
reason = shutdownAction.substring(1, shutdownAction.length());
} else {
reason = null;
}
ShutdownThread.rebootOrShutdown(reboot, reason);
}
}
String factoryTestStr = SystemProperties.get("ro.factorytest");
int factoryTest = "".equals(factoryTestStr) ? SystemServer.FACTORY_TEST_OFF
: Integer.parseInt(factoryTestStr);