I have a program that uses libusb and it only works from root. When I
try
to run as a normal user I get errors like this:

avrdude: usb_open(): cannot read serial number "error sending control
message: Operation not permitted"
avrdude: usb_open(): cannot read product name "error sending control
message: Operation not permitted"
avrdude: usbdev_open(): error setting configuration 1: could not set
config 1: Operation not permitted

I didn't see a usb group in /etc/group or anything like that. Can
anyone
tell me the preferred way to let users run programs that use libusb?

Thanks,
Britton Kerin



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On 09/10/2007 05:39 PM, Britton Kerin wrote:
> I have a program that uses libusb and it only works from root. When I
> try
> to run as a normal user I get errors like this:
>
> avrdude: usb_open(): cannot read serial number "error sending control
> message: Operation not permitted"
> avrdude: usb_open(): cannot read product name "error sending control
> message: Operation not permitted"
> avrdude: usbdev_open(): error setting configuration 1: could not set
> config 1: Operation not permitted
>
> I didn't see a usb group in /etc/group or anything like that. Can
> anyone
> tell me the preferred way to let users run programs that use libusb?

/usr/share/doc/libusb-0.1-4/README.Debian has some mount options that
might be ful in your situation.

--
Kind Regards,
Michael Shuler


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Unfortunately someone on #debian on IRC said that the instructions in
that file are incorrect when then udev-created device is involved. Or
something like that. Sorry, I should have mentioned that originally.

Britton

On Mon, 10 Sep 2007 17:45:58 -0500, "Michael Shuler"
<michael@pbandjelly.org> said:
> On 09/10/2007 05:39 PM, Britton Kerin wrote:
> > I have a program that uses libusb and it only works from root. When I
> > try
> > to run as a normal user I get errors like this:
> >
> > avrdude: usb_open(): cannot read serial number "error sending control
> > message: Operation not permitted"
> > avrdude: usb_open(): cannot read product name "error sending control
> > message: Operation not permitted"
> > avrdude: usbdev_open(): error setting configuration 1: could not set
> > config 1: Operation not permitted
> >
> > I didn't see a usb group in /etc/group or anything like that. Can
> > anyone
> > tell me the preferred way to let users run programs that use libusb?
>
> /usr/share/doc/libusb-0.1-4/README.Debian has some mount options that
> might be ful in your situation.
>
> --
> Kind Regards,
> Michael Shuler
>
>
> --
> To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org
> with a subject of "unsubscribe". Trouble? Contact
> listmaster@lists.debian.org
>



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