Re: kern/48449: y2038 shortcomings of ffsv1

[David Holland <dholland-bugs%netbsd.org@localhost>]

The following reply was made to PR kern/48449; it has been noted by GNATS.

From: David Holland <dholland-bugs%netbsd.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/48449: y2038 shortcomings of ffsv1
Date: Thu, 10 Jun 2021 05:26:00 +0000

 On Sun, Dec 15, 2013 at 07:25:00AM +0000, dholland%NetBSD.org@localhost wrote:
  > >Fix:
  > 
  > When 32-bit times are read in, instead of just sign-extending them as
  > currently appears to happen, paste on the top half of the current
  > 64-bit time and then possibly adjust up or down by 0x100000000.
 
 Or, much more simply, store a 64-bit epoch in the superblock (this
 lets you pick it at newfs time) and add the 32-bit times to it. This
 requires adding a superblock field but we can probably afford that.
 
 -- 
 David A. Holland
 dholland%netbsd.org@localhost