Merge "Fallback to hard reboot if userspace reboot hasn't started in time" am: 1c146547

}

static void UserspaceRebootWatchdogThread() {

    if (!WaitForProperty("sys.init.userspace_reboot.in_progress", "1", 20s)) {

        // TODO(b/135984674): should we reboot instead?

        LOG(WARNING) << "Userspace reboot didn't start in 20 seconds. Stopping watchdog";

        return;

    auto started_timeout = GetMillisProperty("init.userspace_reboot.started.timeoutmillis", 10s);

    if (!WaitForProperty("sys.init.userspace_reboot.in_progress", "1", started_timeout)) {

        LOG(ERROR) << "Userspace reboot didn't start in " << started_timeout.count()

                   << "ms. Switching to full reboot";

        // Init might be wedged, don't try to write reboot reason into a persistent property and do

        // a dirty reboot.

        PersistRebootReason("userspace_failed,watchdog_triggered,failed_to_start", false);

        RebootSystem(ANDROID_RB_RESTART2, "userspace_failed,watchdog_triggered,failed_to_start");

    }

    LOG(INFO) << "Starting userspace reboot watchdog";

    auto timeout = GetMillisProperty("init.userspace_reboot.watchdog.timeoutmillis", 5min);

    LOG(INFO) << "UserspaceRebootWatchdog timeout: " << timeout.count() << "ms";

    if (!WaitForProperty("sys.boot_completed", "1", timeout)) {

        LOG(ERROR) << "Failed to boot in " << timeout.count() << "ms. Switching to full reboot";

    auto watchdog_timeout = GetMillisProperty("init.userspace_reboot.watchdog.timeoutmillis", 5min);

    LOG(INFO) << "UserspaceRebootWatchdog timeout: " << watchdog_timeout.count() << "ms";

    if (!WaitForProperty("sys.boot_completed", "1", watchdog_timeout)) {

        LOG(ERROR) << "Failed to boot in " << watchdog_timeout.count()

                   << "ms. Switching to full reboot";

        // In this case device is in a boot loop. Only way to recover is to do dirty reboot.

        // Since init might be wedged, don't try to write reboot reason into a persistent property.

        PersistRebootReason("userspace_failed,watchdog_triggered", false);

        RebootSystem(ANDROID_RB_RESTART2, "userspace_failed,watchdog_triggered");

        PersistRebootReason("userspace_failed,watchdog_triggered,failed_to_boot", false);

        RebootSystem(ANDROID_RB_RESTART2, "userspace_failed,watchdog_triggered,failed_to_boot");

    }

    LOG(INFO) << "Device booted, stopping userspace reboot watchdog";

}