Re: determining which process triggered an automount

[Fabio Olive Leite <fleite@redhat.com>]

On Thu, Apr 12, 2007 at 07:13:07AM -0700, Peter C. Norton wrote:
> 
> I think a system tap module could get you this, but it will take some
> time investment for you to find out how to use it.
> 
> http://sourceware.org/systemtap/

And it also takes a bit of time to find probe points that have not
been optimized away, auto-inlined, etc. In any case, here's a working
(in FC5) probe that will tell you who requested a directory. It could
be improved to provide a full path, but I'm satisfied by it as is.

probe module("autofs4").function("autofs4_find_wait") {
	printf("%s(%d) requested %s\n", execname(), pid(),
		kernel_string($name))
}

The output is:

$ sudo stap autofs4_notify_daemon.stap
bash(5913) requested foobar
bash(5913) requested foobar
bash(5913) requested foobar
...

Maybe autofs4_find_wait is not the best place, but it works, and I
found the more obvious autofs4_notify_daemon to be auto-inlined.

Hope this helps!
Fábio
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