best way to audit in vfs

[Chris Wright]

* Timothy R. Chavez (chavezt at gmail.com) wrote:
> I've been kind of thinking about this.  Presumably, we want to audit
> both failed and successful attempts in whatever vfs function we happen
> to be in.  For instance, if we fall out of vfs_mkdir because
> may_create returned an error, we'd like to receive an audit message
> that said something like, "filename=myfile syscall= mkdir()
> error=<errno>.....", but, would I want to do this by hooking each
> conditional statement?  Is there a better approach?  The only other
> one I can think of would be to have one exit point in the functions
> and audit right before we exit...

You already get syscall entry/exit with audit.  So all you need is the
intermediate step.

thanks,
-chris
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