Re: [ros-users] Nodes with root privileges

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Author: Josh Faust
Date:  
To: taylor, ros-users
Subject: Re: [ros-users] Nodes with root privileges
>
> I would like to run privileged code from within the callbacks, how can
> I do this? Are the callbacks being executed from a separate thread
> which does not have privileges? What am I missing here?
>


Callbacks are made from whatever thread you're calling spin()/spinOnce()
from.


>
> Or is there a better, different method to run a node with root privileges?
>
>
> The pr2_etherCAT (http://www.ros.org/wiki/pr2_etherCAT) node uses root
> privelges. A program called pr2_grant runs the chmod command similar
> to what I did. But pr2_etherCAT does not subscribe to any topics, nor
> does it include <sys/io.h> so I couldn't get more help there.
>


pr2_etherCAT loads plugins which do subscribe to many topics.

Josh