Daylight Saving Time

[Daniel R. Levy]

In article <204 at Unison6.OZ>, rcodi at Unison6.UUCP writes:
>I rekon that the BSD way of keeping the timezone info in the kernel is more
>sensible, as it guarantees uniformity for all processes in the system.  Perhaps
>a cron script particular to each machines' timezone can be used to alter
>DST at appropriate times of the year for those countries that seem
>to keep changing DST (by adb'ing the kernel? - Yuk!)
>			    Ian Donaldson

Why adb the kernel?  A privileged system call would do.  Of course a program
which used the system call to set the time zone details would have to be
invoked every time the machine was rebooted, but that's easy.  And why use
a cron script?  Deep internally the machine would know GMT (say), but would
actually perform transactions in terms of the local time as figured by a
table implanted in the kernel via the aforementioned system call. The
default (prior to system call) could be something reasonable based on data
furnished when the kernel was made.  Surely this has been suggested before?
-- 
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