[Mageia-dev] dropping /proc/bus/sub (Re: [changelog] [RPM] cauldron core/release systemd-189-2.mga3)

Thierry Vignaud thierry.vignaud at gmail.com
Wed Aug 29 16:06:50 CEST 2012


On 29 August 2012 15:46, Colin Guthrie <mageia at colin.guthr.ie> wrote:
>> Is there any migration to do in drakx and ldetect because of this?
>
> Oh yeah I meant to send a message to the list about this.
>
> Yeah because we're now on kernel 3.5 we can no longer do certain things
> relating to this mount point.
>
> IIRC some ldetect stuff used it and some of the 3G and/or
> printer/scanner stuff might also depend on it and need to be migrated
> too. I don't know that code very well, but I know some folks complained
> when we stopped mounting it by default, so I've no doubt that it's use
> is lurking somewhere!
>
> I would guess that in some cases /dev/bus/usb/ might be sufficient for
> what is needed.

Humm...
I've still around a patch making ldetect using libusb.
Sadly, we're missing some data...
Basically we would miss the kernel driver name binded with each usb device.

We cannot workaround it since libusb misses with the ability to either
query the sysfs device path or to got the Port number
("Port" in /proc/bus/usb/devices).
(I miss the Port number in order to compute the
/sys/bus/devices/usb/foobar path)

W/o that I cannot retrieve the modalias which would help me to get the kernel
driver name.

I guess I'll have to resurect that work and try harder to find some
workaround...

See you


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