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On Aug 8, 2004, at 3:18 AM, hsaliak@kasba.ath.cx wrote:

> My main problem problem here is that  I dont have much idea on how to 
> go about
> designing a efficient way to communicate between such an indexing 
> daemon and my
> fs layer.
> Is there an efficient mechanism already present to achieve this?  Or 
> anything I can base it on, without starting from scratch?

There's not really a generic mechanism for this.  You want to develop a 
message passing interface ... you could use a socket or a character 
special device.  The latter has some prior art: Take a look at the CODA 
file system in the tree, which uses a character device to communicate 
with the userland portion of the file system.  Other FS projects I have 
worked on have also used the character device approach.

         -- Jason R. Thorpe <thorpej@wasabisystems.com>


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