On Fri, 11 Apr 2008, Rene Herman wrote:
> On 11-04-08 13:34, Robert P. J. Day wrote:
>
> > > Historically, no way. The driver just gets everything for its
> > > registered major and has to switch on minor itself. That is, no such
> > > thing as "allocated" minors as far as the system is concerned.
> >
> > just to be pedantic here, when you say there are no such things as
> > "allocated" minors, i'm assuming that what you mean is that it's
> > always up to a loaded module to choose what minors it wants to try to
> > allocate and register, right? or, put another way, there are no such
> > things as *pre*-allocated minors. am i parsing that the right way?
>
> No, really no such thing as allocated minors. You don't register
> them with anything historically. I've attached a very minimal char
> driver using The Olden Ways and you see that it itself checks in its
> open method -- doesn't register a minor anyhere and gets called for
> every minor; only the major is significant to the system.
yes, i'm starting to appreciate that my original question was kind of
meaningless. so let's just forget i asked it and carry on. :-)
rday
--
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Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry:
Have classroom, will lecture.
http://crashcourse.ca Waterloo, Ontario, CANADA
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