Re: [Bluez-devel] Permission flags (chmod) for /dev/rfcomm*

[Marcel Holtmann <marcel@holtmann.org>]

Hi Thomas,

> We have a bunch of small robots that we can access via bluetooth. For  
> each robot, we added an entry in the /etc/bluetooth/rfcomm.conf file.  
> These entries look as follows:
> 	rfcommXX {
> 		bind yes;
> 		device HARDWARE_ADDRESS;
> 		channel 1;
> 	}
> 
> When we start the bluetooth service, the following line is executed  
> (as root)
> 	rfcomm bind all
> which creates a /dev/rfcommXX for each robot. There are two issues  
> with these files:
> 
> 1) All devices are created with chmod 600 (crw-------). This is a  
> problem for us because we want several users to be able to access  
> them. Is there a way of configuring the chmod mask in the rfcomm.conf  
> file?
> (Note that launching a "chmod 666 /dev/rfcomm*" after "rfcomm bind  
> all" is not a good solution since the devices are created with some  
> delay.)
> 
> 2) These devices belong to the locally logged in user, not root. Why?  
> Is there a way to configure that (user and group ownership)?

both are udev related questions and in both cases the udev configuration
is the answer.

Regards

Marcel




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