Re: kernel knowledge of localtime (user-level implememntation)

a sun (asun@saul6.u.washington.edu)
Fri, 11 Dec 1998 16:23:52 -0800 (PST)


So -- we make the VFS know about time-zone changes, surely that would
work? We don't even need this to be overly clever, we would just make
it a simple integer offset from UTC (kernel) time and have a userland
daemon re-sync. this when timezones shift (eg. daylight savings
time).

umm, this thread is going in circles. settimeofday(NULL, &tz) provides
the mechanism to do this. in fact, my original post was just a
question about where to stick the user-level bits. i have it in the
update daemon, for example, as it has minimal overhead (most likely
less than a regularly scheduled cron job) and you never need to call
settimeofday unless the timezone actually changes. given that update
runs every 10 seconds, you even get pretty good resolution on a
timezone switch.

so, who is responsible for the update daemon now? i sent an email a
while back to ewt@redhat.com, but that seems to have fallen on deaf
ears.

-a
asun@u.washington.edu

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