Re: open modes O_DENYREAD and O_DENYWRITE

[Martin Husemann <martin%duskware.de@localhost>]

On Wed, Feb 06, 2013 at 08:19:41AM +0000, David Laight wrote:
> There is a current thread on some of the linux lists and wine-devel
> about the semantice of two more open modes O_DENYREAD and O_DENYWRITE.
> 
> These are being implemented (I think only for nfs and samba at the
> moment) in order to support the equivalent windows open modes.

FYI, the windows modes that match our model are SHARE_DENY_NONE (0) and
SHARE_EXCLUSIVE (O_EXCL), but O_SHLOCK is split into SHARE_DENY_READ and
SHARE_DENY_WRITE.

It kind of makes sense to me, but I don't have an easy example where the
difference would be vital.

Martin