[Review] Remove procfs dependency of truss

[Alfred Perlstein]

* Howard Su <howard0su at gmail.com> [070404 01:20] wrote:
> Following the suggestion in idea page, I proposed the attached patch.
> I didn't change any kernel part because I think PTRACE(2) is
> functional although man page didn't document it.
> 
> I tested the patch under i386 and amd64 box. The help on testing and
> code review will be appreciated.

wow, well done!  any draw backs to using ptrace over procfs?

have you tested performance?

-Alfred