toolbox: uptime: use clock_gettime() on devices without /dev/alarm

        sprintf(buffer, "%02d:%02d:%02d", hours, minutes, seconds);

}

int64_t elapsedRealtime()

static int elapsedRealtimeAlarm(struct timespec *ts)

{

    struct timespec ts;

    int fd, result;

    fd = open("/dev/alarm", O_RDONLY);

    if (fd < 0)

        return fd;

   result = ioctl(fd, ANDROID_ALARM_GET_TIME(ANDROID_ALARM_ELAPSED_REALTIME), &ts);

    result = ioctl(fd, ANDROID_ALARM_GET_TIME(ANDROID_ALARM_ELAPSED_REALTIME), ts);

    close(fd);

    return result;

}

int64_t elapsedRealtime()

{

    struct timespec ts;

    int result = elapsedRealtimeAlarm(&ts);

    if (result < 0)

        result = clock_gettime(CLOCK_BOOTTIME, &ts);

    if (result == 0)

        return ts.tv_sec;

    return -1;