Hi Michael,
thank you foer the fast reply!
On Sun, May 13, 2018 at 01:14:19PM +0200, Michael Kerrisk (man-pages) wrote:
> It's pretty clear that there are some missing EINVAL cases
> in the manual page. However, I think the case should rather
> be documented as
>
> (tv.tv_set < 0 || tv.tv_usec < 0 || tv.tv_usec >= 1000000)
>
> giving EINVAL. But, perhaps I miss your point. What values
> were you specifying to settimeofday() that led to EINVAL?
I agree that the obvious case does not need to be docu-
mented. But the problem was that we were (accidentally)
trying to set the system time to e.g. 37 seconds after
the epoch (i.e. tv.tv_sec = 37 and tv.tv_nsec = 0) when
the system already had been up for several minutes. We
were puzzled to get a failure from settimeofday() before
realizing that you obviously can't set the system ime to
anything nearer to the epoch than the current value of
the uptime. Which makes a certain amount of sense as
otherwise 'uptime -s' would have to report a time be-
fore the start of the epoch.
But, obviously, my attempt at describing the case in
the patch wasn't very clear, so I probably better give
it another try;-)
I guess (but haven't tried yet) that the same will be
the case for clock_settime().
Best regards, Jens
--
\ Jens Thoms Toerring ________ jt@xxxxxxxxxxx
\_______________________________ http://toerring.de
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