On Thu, 8 Aug 2002, Jason R Thorpe wrote:

> On Fri, Aug 09, 2002 at 09:43:05AM +0900, itojun@iijlab.net wrote:
>
>  > 	we're using GMT on RTC chip, as well as in-kernel clocks (struct timeval
>  > 	time and such) when we use NetBSD.  some filesystems (like flashmemory
>  > 	removed from digital camera) have file timestamps in different timezone
>  > 	(in my case, JST).  so when i mount it with mount_msdos, i will see
>  > 	file timestamps with 9 hours offset.  i would like to see correct
>  > 	timestamps.
>  >
>  > 	in what layer should we convert filesystem timezone?  it should be
>  > 	configurable, so i guess mount option makes the most sense.
>  > 	(pardon me if i'm asking a dumb question, i'm not a filesystem/vm guy)
>
> I would say add an option for a "time offset" on a per-mount point basis,
> translated in the VFS layer.

Sounds good.

I think the only calls this covers are GETATTR and SETATTR. I think there
are few-enough consumers that they can deal w/ timezone offsets. And since
we only need to support it in terms of seconds (well minutes actually),
changing timestamps around won't be hard.

Take care,

Bill