Re: unify sysfs device tree

Dmitry Torokhov
2006-01-13T04:24:52Z

On Thursday 12 January 2006 20:56, Kay Sievers wrote:
> Here is for illustration the "input" layer as a flat /sys/class directory. All
> devices point to /sys/devices which exposes the device hierarchy if userspace
> wants to know that:
>         /sys/class/
>         ...
>         |-- input
>         |   |-- input0 -> ../../devices/platform/i8042/serio1/input0
>         |   |-- input1 -> ../../devices/platform/i8042/serio0/input1
>         |   |-- input3 -> ../../devices/platform/i8042/serio0/serio2/input3
>         |   |-- input4 -> ../../devices/pci0000:00/0000:00:1d.1/usb3/3-2/3-2:1.0/input4
>         |   |-- mice -> ../../devices/mice
>         |   |-- mouse0 -> ../../devices/platform/i8042/serio0/input1/mouse0
>         |   |-- mouse1 -> ../../devices/pci0000:00/0000:00:1d.1/usb3/3-2/3-2:1.0/input4/mouse1
>         |   `-- mouse2 -> ../../devices/platform/i8042/serio0/serio2/input3/mouse2

Looks nice with exception of my standard argument that inputX and
mouseX are objects of different (but related) classes.

I believe this also relies on overriding class' methods (release, uevent)
by individual devices and inability for class to define standard attributes
for such devices. Pretty yucky...

--
Dmitry