RFC deprecating the possible action

[Steve Grubb]

Hi,

I was looking at the syscall entry code and was thinking that we could 
eliminate the "possible" action. The code in syscall entry seems to have been 
hard-wired such that every syscall performs the action as if "possible" was 
set. (Unless a never rule evaluates true.)

Since this is now hard-wired into the code, I'd like to eliminate the action 
so that people do not submit rules with "possible" as an action. This would 
help in terms of performance since the system won't be evaluating rules that 
are hard coded.

We currently have 5 syscall rules in the capp.rules file and lspp.rules file 
that would be eliminated by this change. I could always delete them from the 
rule file, but other people will make the mistake of setting possible on some 
rules without studying the kernel code.

What's people's thoughts on this?

-Steve