On Thu, 24 Jan 2008, Freeman Liu wrote:
>
> > > >
> > > In this phase, only sadasupport open it by ldi_ interface. And in the
> > > future, both user land applications and
> > > sadasupport will use it. I feel this solution can avoid unexpected effect
> > > as well as make the future migration
> > > smooth.
> >
> > So in this case there is no userland program that will ever need to open
> > /dev/dsp ? If so then I think the best option is not to create it at all
> > even as /dev/private/dsp.
> From this point of view, you are right. While from another point of view,
> since the visibility of this interface will be promoted in following phases,
> we feel the current approach is a simple one without too much risk. Anyway, if
> any serious concern emerges which we have overlooked, making
> it a internal node will be a good approach.
>
It seems to me that the best answer is for phase 1 apps to open the
/devices/ name and not create the /dev/ link. When you want to
promote it, effectively all you need to do is create the link. Apps
that hunt for it in /devices will still continue to work, and there is
no rename problem. Seems like the lowest risk to me.
---- Randy
