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$Id: isc_stdtime.3,v 1.2 2000/07/27 09:43:45 tale Exp $

.Dd Jun 30, 2000 .Dt ISC_STDTIME 3 .Os BIND9 9 .Sh NAME .Nm isc_stdtime_get .Nd get the current date and time .Sh SYNOPSIS .Fd #include <config.h> .Fd #include <sys/time.h> .Fd #include <isc/stdtime.h> .Fd #include <isc/util.h> .Ft void .Fo isc_stdtime_get .Fa "isc_stdtime_t *t" .Fc .Sh DESCRIPTION .Fn isc_stdtime_get sets .Fa t to the number of seconds since the UNIX epoch, 00:00:00 UTC, January 1, 1970. .Sh SEE ALSO .Xr gettimeofday 2 , .Xr isc_time_now 3 . .Sh BUGS A time synchronisation protocol such as NTP is needed to ensure that the kernel's concept of the current time is accurate.

p At 03:14:08 GMT on Tue Jan 19 2038, the number of seconds since the UNIX epoch will overflow a 32-bit signed integer. This may cause unpredictable behaviour on systems which treat these timestamps as 32-bit signed quantities. .Dv isc_stdtime_t is defined as a 32-bit unsigned quantity, which means .Fn isc_stdtime_get should be safe until some time in 2106. Applications that want maximum portability should not assume anything about the size of a .Dv isc_stdtime_t .