程序代码:
struct timespec ts;
ts = current_kernel_time();
printk(KERN_ALERT "%ld %ld\n", ts.tv_sec, ts.tv_nsec);
struct timeval tv;
/*获取时间*/
do_gettimeofday(&tv);
printk(KERN_ALERT "now: %ld %ld\n", tv.tv_sec, tv.tv_usec);
/*设置时间, 时钟调后5小时*/
ts.tv_sec = tv.tv_sec + 3600*5;
do_settimeofday(&ts);
printk(KERN_ALERT "after 5 hours: %ld %ld\n", tv.tv_sec, tv.tv_usec);
输出日志:
Jun 30 23:17:29 localhost kernel: now: 1309447049 608761
Jun 30 23:17:29 localhost kernel: after 5 hours: 1309447049 608761
Jun 30 23:18:13 localhost kernel: Goodbye, cruel world
Jul 1 04:18:22 localhost kernel: Hello, world
Jul 1 04:18:22 localhost kernel: 1309447102 738475231
Jul 1 04:18:22 localhost kernel: now: 1309447102 739073
Jul 1 04:18:22 localhost kernel: after 5 hours: 1309447102 739073
阅读(10556) | 评论(0) | 转发(2) |