Re: [Libusb-devel] Upgrade to Ubuntu 9.04 lost all permission for normal users?

[Eberhard F. <e....@wa...>]

On Samstag, 9. Mai 2009 21:40:13 Greg KH wrote:
> On Sat, May 09, 2009 at 06:37:13PM +0200, Eberhard Fahle wrote:
> > I wrote (just a few minutes ago):
> > > Hi,
> > > is it just that I'm having a bad day or did this happen to anybody
> > > else?
> > >
> > > I upraded to KUbuntu 9.04
> > >
> > > Since Ubuntu 8.04 I'm using this udev rule here to give rw permissions
> > > to all users.
> > >
> > > -------------------
> > > #Set permissions, allowing normal users to have read- and write-access
> > > to the device
> > > ATTRS{idVendor}=="07c0", ATTRS{idProduct}=="1113", MODE="666"
> > > ATTRS{idVendor}=="07c0", ATTRS{idProduct}=="1114", MODE="666"
> > > -------------------
> > >
> > > This used to work fine on both machines I have.
> > > After I did the upgrade the permissions are gone, only running my apps
> > > with sudo works!
> >
> > And now I'm really angry!
>
> Complain to Ubuntu, not to us, there's nothing we can do about this,
> sorry.

I was just angry at the world! 
Sorry never meant to offend anybody.  I filed  a Bug-report on launchpad for 
this issue .

Two things I'd like to add about the issue:

1) I'm really glad that whoever came up with this udev rule for libusb, put 
the comment right next to the rule, otherwise it might have taken 4 days 
instead of 4 hours of investigation to solve the problem. Thank you.

2) As a result of the "new" libusb rule I can now delete my rules for changing 
the permissions for individual devices. By setting the mode to "0666" in the 
rule for non-root access...

# libusb device nodes
SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", 
NAME="bus/usb/$env{BUSNUM}/$env{DEVNUM}", MODE="0666" 

... _ALL_ devices I talk to using libusb have their permissions set to "0666".
This all or nothing approach could turn out as a security problem for some 
people, because it looks like you can either grant permissions for all  
libusb-devices or none.

This is a feature for me (being the only user on the machine) so no bug report 
from me for this...

Thanks for caring 
Eberhard