Re: Passing references to kobjects between userland and kernel

[Greg KH <greg@kroah.com>]

On Wed, Jun 14, 2006 at 04:26:38PM +0200, Daniele orlandi wrote:
> 
> Hello,
> 
> I'm trying to figure out what is the correct way to pass references to 
> kobjects between userland and kernel space.

Use the kobject_uevent() call from kernelspace to let userspace know
whatever you want it to.  That is what it is there for :)

> 
> I have my big object hierarchy of kobjects representing a TDM interconnect 
> graph with channels, crossconnectors, physical ports and so on.
> The main objects are nodes and archs; archs connect two nodes together.
> 
> The hierarchy is exported to sysfs.
> 
> From userland I want to tell the kernel "Connect node X to node Y".

Then use the names of the kobjects within your subdirectory.  They have
to be unique so you should be safe.

Or use configfs :)

thanks,

greg k-h