https://en.wikipedia.org/wiki/System_time#Operating_systems
Fun chart here.
Linux kernels after 5.10 support dates up to July 2486. The 2038 thing affects
older kernels.
It also may impact a variety of other things that might have stored dates as a
32 bit integer. File system time stamps, database time fields, etc. The time
data type in C was originally 32 bit, and changing it to 64 bit creates
compatibility problems for code which assumed a 32 bit value. If it’s C
compiled recently for a 64 bit system then it maybe probably has a 64 bit time
data type already, but old software may run for a long time. People are
already coding for dates farther into the future than 2038 so the issue would
be with embedded systems that never get replaced or updated. I’m sure there
are innumerable examples, but I suspect most of them are systems that don’t
really care what year it is. If a negative value breaks it, then reset the
clock to 1978 and buy yourself another 50 years to get your upgrade budget
approved.
Interestingly, according to that chart, Windows supports dates past the year
30,000, but the IBM PC BIOS only counts up to 2079. I suppose the next panic
will be when 2079 approaches.
-Adam
From: AF <af-boun...@af.afmug.com> On Behalf Of Bill Prince
Sent: Monday, February 12, 2024 3:54 PM
To: AnimalFarm Microwave Users Group <af@af.afmug.com>
Subject: Re: [AFMUG] OT 2038 Linux
Someone explain to me why the system clock is a signed integer?
We need the IPV6 version of the system clock.
Also please note that David Mills; the inventor of NTP passed away January 17,
2024. He was known as "Father Time".
bp
<part15sbs{at}gmail{dot}com>
On 2/12/2024 11:53 AM, Ken Hohhof wrote:
I’m not President or a Senator or Supreme Court Justice, so in 2038 I plan to
be retired or dead. It will be somebody else’s problem.
From: AF <mailto:af-boun...@af.afmug.com> <af-boun...@af.afmug.com> On Behalf
Of Chuck McCown via AF
Sent: Monday, February 12, 2024 1:02 PM
To: <mailto:af@af.afmug.com> af@af.afmug.com
Cc: <mailto:ch...@go-mtc.com> ch...@go-mtc.com
Subject: [AFMUG] OT 2038 Linux
"The latest time which can be represented like this is 03:14:07 UTC on January
19, 2038," said Zimmie. "Once the timer is incremented from this second, the
value 'overflows' and goes from being a large positive number to being a large
negative number. The next second this counter can represent is 20:45:52 UTC on
December 13, 1901. This is called the Year 2038 Problem."
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