Re: [RFC] subclasses in sysfs to solve world peace

Dmitry Torokhov
2005-09-16T02:03:49Z

On Thursday 15 September 2005 20:54, Kay Sievers wrote:
> On Thu, Sep 15, 2005 at 08:23:43PM -0500, Dmitry Torokhov wrote:
> > On Thursday 15 September 2005 20:04, Kay Sievers wrote:
> > > I like that the child devices are actually below the parent device
> > > and represent the logical structure. I prefer that compared to the
> > > symlink-representation between the classes at the same directory
> > > level which the input patches propose.
> >
> > Why don't we take it a step further and abandon classes altogether?
> > This way everything will grow from their respective hardware devices.
>
> Not everything is hardware. :)
>
> > Class represent a set of objects with similar characteristics. In
> > this regard event0 is no "lesser" than input0. Although they are
> > linked they are objects of the same importance. I do want to see
> > all input interfaces without scanning bunch of directories.
>
> No problem, how about this:
> /sys/class/input/
> |-- input0
> | |-- event0
> | | `-- dev
> | `-- mouse0
> | | `-- dev
> |-- input1
> | |-- event1
> | | `-- dev
> | `-- ts0
> | | `-- dev
> |-- mice
> | `-- dev
> `-- interfaces
> |-- event0 ->·../input0/event0
> |-- event1 ->·../input1/event1
> |-- mouse0 ->·../input0/mouse0
> |-- mice -> ../mice
> `-- ts0 -> ../input1/ts0
>

I am thinking... the rule would be - when adding a class device if it
has a class_device parent then it gets added to parent's directory and
symlinked into class. Otherwise it gets added into class directory.

I do not want to have a separate subclass_device structure...

--
Dmitry