On Fri, Aug 08, 2008 at 10:14:33PM +0200, Tomasz Chmielewski wrote:
> open("/dev/rtc", O_RDONLY|O_LARGEFILE) = 3
> ioctl(3, RTC_UIE_ON, 0) = -1 ENOTTY (Inappropriate ioctl for device)
> ioctl(3, RTC_RD_TIME, {tm_sec=0, tm_min=0, tm_hour=0, tm_mday=0, tm_mon=-1, tm_year=100, ...}) = 0
> ioctl(3, RTC_RD_TIME, {tm_sec=0, tm_min=0, tm_hour=0, tm_mday=0, tm_mon=-1, tm_year=100, ...}) = 0
> ioctl(3, RTC_RD_TIME, {tm_sec=0, tm_min=0, tm_hour=0, tm_mday=0, tm_mon=-1, tm_year=100, ...}) = 0
> ioctl(3, RTC_RD_TIME, {tm_sec=0, tm_min=0, tm_hour=0, tm_mday=0, tm_mon=-1, tm_year=100, ...}) = 0
> ioctl(3, RTC_RD_TIME, {tm_sec=0, tm_min=0, tm_hour=0, tm_mday=0, tm_mon=-1, tm_year=100, ...}) = 0
> ioctl(3, RTC_RD_TIME, {tm_sec=0, tm_min=0, tm_hour=0, tm_mday=0, tm_mon=-1, tm_year=100, ...}) = 0
> ioctl(3, RTC_RD_TIME, {tm_sec=0, tm_min=0, tm_hour=0, tm_mday=0, tm_mon=-1, tm_year=100, ...}) = 0
> ioctl(3, RTC_RD_TIME, {tm_sec=0, tm_min=0, tm_hour=0, tm_mday=0, tm_mon=-1, tm_year=100, ...}) = 0
> ioctl(3, RTC_RD_TIME, {tm_sec=0, tm_min=0, tm_hour=0, tm_mday=0, tm_mon=-1, tm_year=100, ...}) = 0
> ioctl(3, RTC_RD_TIME, {tm_sec=0, tm_min=0, tm_hour=0, tm_mday=0, tm_mon=-1, tm_year=100, ...}) = 0
> ioctl(3, RTC_RD_TIME, {tm_sec=0, tm_min=0, tm_hour=0, tm_mday=0, tm_mon=-1, tm_year=100, ...}) = 0
> ioctl(3, RTC_RD_TIME, {tm_sec=0, tm_min=0, tm_hour=0, tm_mday=0, tm_mon=-1, tm_year=100, ...}) = 0
> ioctl(3, RTC_RD_TIME, {tm_sec=0, tm_min=0, tm_hour=0, tm_mday=0, tm_mon=-1, tm_year=100, ...}) = 0
> ioctl(3, RTC_RD_TIME, {tm_sec=0, tm_min=0, tm_hour=0, tm_mday=0, tm_mon=-1, tm_year=100, ...}) = 0
> (...)
Yeah, our synchronize_to_clock_tick() :-)
hwclock/rtc.c, busywait_for_rtc_clock_tick():
for (i = 0;
(rc = do_rtc_read_ioctl(rtc_fd, &nowtime)) == 0
&& start_time.tm_sec == nowtime.tm_sec;
i++)
if (i >= 1000000) {
fprintf(stderr, _("Timed out waiting for time change.\n"));
return 2;
}
Karel
--
Karel Zak <kzak@xxxxxxxxxx>
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