Help using scripts when USB devices plug-in

[Samuel Díaz García]

In case of /dev/video0, the user logged via gdm is the user must have 
the permissions.

In case of /dev/ttyACM0, all users logged in the machine (locally, 
remote ssh, remote x, local x, etc).

As you explained, perhaps for /dev/video0, the method will be 
console.perms (I don't know how to do it, but i'll take a look in 
google), and for /dev/ttyACM0, the method will be udev (as with 
console.perms, I don't know how to do it).

If somebody can put examples for the two cases, I'll apreciate a lot.

Thanks

Mikkel L. Ellertson escribió:
> Samuel Díaz García wrote:
>> Hi, I'm searching how-to use a script when I connect my webcam or my
>> movil USB cable.
>>
>> For example, when I connect the USB movile cable, I need to put 666
>> permisions on /dev/ttyACM0 detected device, or when I plug-in my webcam
>> into my notebook, I need the same into /dev/video0 device.
>>
>> Where I can add these scripts to allow all users to take control over
>> the pluged-in devices?
>>
>> Thanks
>>
> Your /dev/video0 settings will get probably get overridden by
> /etc/security/console.perms.d/50-default.perms. You could it with a
> udev rule, but the first time you logged in/out with the device
> plugged in, it would get changed. You are better off changing it
> there - probably adding a local rule file. Check "man console.perms"
> for some additional information. You can write a udev rule for USB
> device that controls the permission of /dev/ttyACMx, or you could
> write a console.perms rule that will take set the owner to the
> person logged in at the console.
> 
> It would help if you explained exactly what you are after. You say
> you want all users to be able to take control of the plugged in
> devices. Do you want it to be whoever gets to the device first gets
> control, or would giving control to whoever is logged at the machine
> work out better? The second approach is the way FC5 is set up,
> because you normaly have to be at the local machine to plug things
> in. But I can see where you might want to control a plugged in
> device remotely...
> 
> Mikkel

-- 
    Samuel Díaz García
     Director Gerente
ArcosCom Wireless, S.L.L.

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