[QUESTION] which routines must be re-entrant?

[QUESTION] which routines must be re-entrant?

[Dawson Engler]

Is there an easy way to tell which routines must be re-entrant? 
(it doesn't have to be exhaustive, even an incomplete set is useful)

I was going to write a checker to make sure supposedly re-entrant
routines actually were, but was having a hard time figuring out which
ones were supposed to be...

Thanks,
Dawson

Re: [QUESTION] which routines must be re-entrant?

[Kurt Roeckx]

On Thu, May 31, 2001 at 04:01:34PM -0700, Dawson Engler wrote:
> Is there an easy way to tell which routines must be re-entrant? 
> (it doesn't have to be exhaustive, even an incomplete set is useful)
> 
> I was going to write a checker to make sure supposedly re-entrant
> routines actually were, but was having a hard time figuring out which
> ones were supposed to be...

Their was an post on bugtraq a few days ago about this, it had a
list with all system calls which are reentrant safe under
OpenBSD.  The paper was about signals, and is available at

http://razor.bindview.com/publish/papers/signals.txt

OpenBSD had a manpage wich lists all the function which should be
be safe to call from a signal handler.  It might be a nice
place to start.  You should only look at those from section 2
of course.

http://www.openbsd.org/cgi-bin/man.cgi?query=sigaction



Kurt