Re: [Libusb-devel] Usbdevfs permissions problem with libusb under Linux RH 7.2

[Bertrik S. <be...@zo...>]

I'm running Mandrake 9.0 and it apparently mounts the usbdevfs
for group 'usb'. Simply adding myself to group usb allows me to
use libusb as a user.

I don't know what redhat 7.2 does but you can check it by doing
'ls -la' in one of the subdirs of /proc/bus/usb and see if the
group for the files is 'usb'.

Regards,
Bertrik

Guido Madonini wrote:

> I have compiled an application based upon the libusb library and it 
> works fine if LOGIN as root.  But if I login as a User I get the error 
> message:
>
> Couldn't Retrieve Descriptors
>
> I tried to assign the read/write/execute attributes on the 
> applications files but I couldn't sove the problem.
>
> Can you give me an idea on how to make it run?
> Probably I have a usbdevfs permissions problem.
>
> OS: Linux RedHat 7.2
> Guido Madonini