Re: [PATCH] Drop O_LARGEFILE from F_GETFL for POSIX compliance

[Andrea Arcangeli <andrea@suse.de>]

On Mon, Mar 22, 2004 at 05:45:12AM +0100, Andi Kleen wrote:
> On Mon, 22 Mar 2004 05:34:54 +0100
> Andrea Arcangeli <andrea@suse.de> wrote:
> 
> 
> > 32bit archs needs to get O_LARGEFILE in return from getfl (if they set
> > it [it's not set implicitly in 32bit archs] they will be able to handle
> > it transparently in glibc too, and I believe they really want it). 64bit
> > archs not, hence the fix.
> 
> If 32bit archs need it then 64bit archs need it too (think 32bit emulated processes
> on 64bit jernels)  But I think in practice it doesn't matter, so I would prefer to be 
> consistent between 32bit and 64bit.
> 
> I don't feel very strongly about this however ...

I agree it'd be a lot simpler to handle 32bit user on 64bit kernel if we
can clear it unconditionally (otherwise we've to trap getfl with a
ia32 wrapper) but I'm afraid the api may break if we clear that bit
unconditionally. I can't tell you for sure by memory though because the
last time I worked on this was one year and half ago and this is really
a matter of API. We should ask the glibc people for another confirmation
before choosing if to clear it only in 64bit archs or in 32bit too.