go ahead... be a heretic | |
PerlMonks |
Re: is_tainted functionby amarquis (Curate) |
on Sep 20, 2007 at 13:00 UTC ( [id://640111]=note: print w/replies, xml ) | Need Help?? |
As to your main question, sadly, I don't know. But my reading of the Kill function leads me to different conclusions. Kill seems to return the number of processes successfully signaled (processes sent in a list after the signal. The signal zero sends no signals, and there is no list, so that should always return zero. Now, if that eval block gets to the "1;", it is because the join went off without a hitch because the stuff in @_ wasn't tainted. So the eval returns 1, the not turns it into false: the variables were not tainted. If they are tainted, I'm not totally sure what is happening (most of this is guesswork, I'm not that good/experienced with Perl). I'm guessing that the join wets the bed and fails, the "kill" returns 0 (no processes were signaled), the eval grinds to a halt and returns the 0. The not turns that into a true, the variables were in fact tainted. Again, not that experienced, may be way off base here. Edit: Dave swooped in with the correct answer. I'm going to go back to reading "Programming Perl."
In Section
Seekers of Perl Wisdom
|
|