[src/trunk]: src/sys/arch/news68k/news68k Fix y2k bug in inittod().

[tsutsui <tsutsui%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/d6e4700c9475
branches:  trunk
changeset: 480331:d6e4700c9475
user:      tsutsui <tsutsui%NetBSD.org@localhost>
date:      Sun Jan 09 15:56:52 2000 +0000

description:
Fix y2k bug in inittod().

I misunderstood that "bad date in battery clock" message was
caused by dead-battery NVRAM. *sigh*

diffstat:

 sys/arch/news68k/news68k/clock.c |  9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diffs (34 lines):

diff -r 2aa576a48b5d -r d6e4700c9475 sys/arch/news68k/news68k/clock.c
--- a/sys/arch/news68k/news68k/clock.c  Sun Jan 09 15:56:37 2000 +0000
+++ b/sys/arch/news68k/news68k/clock.c  Sun Jan 09 15:56:52 2000 +0000
@@ -1,4 +1,4 @@
-/*      $NetBSD: clock.c,v 1.1 1999/12/09 14:53:16 tsutsui Exp $       */
+/*      $NetBSD: clock.c,v 1.2 2000/01/09 15:56:52 tsutsui Exp $       */
 
 /*
  * Copyright (c) 1992, 1993
@@ -205,12 +205,13 @@
        day = FROMBCD(day);
        mon = FROMBCD(mon);
        year = FROMBCD(year);
+       year = year + (year >= 70 ? 1900 : 2000);
 
        /* simple sanity checks */
-       if (year < 70 || mon < 1 || mon > 12 || day < 1 || day > 31)
+       if (mon < 1 || mon > 12 || day < 1 || day > 31)
                return (0);
        days = 0;
-       for (yr = 70; yr < year; yr++)
+       for (yr = 1970; yr < year; yr++)
                days += LEAPYEAR(yr) ? 366 : 365;
        days += dayyr[mon - 1] + day - 1;
        if (LEAPYEAR(yr) && mon > 2)
@@ -237,6 +238,8 @@
                 t2 -= LEAPYEAR(t) ? 366 : 365;
         }
         c->year = t;
+       if (c->year >= 100)
+               c->year -= 100;
 
         /* t3 = month + day; separate */
         t = LEAPYEAR(t);