Re: standards/51024 (NetBSD misses the mandatory waitid() syscall)

[christos%zoulas.com@localhost (Christos Zoulas)]

The following reply was made to PR standards/51024; it has been noted by GNATS.

From: christos%zoulas.com@localhost (Christos Zoulas)
To: Joerg Schilling <Joerg.Schilling%fokus.fraunhofer.de@localhost>, <wiz%netbsd.org@localhost>, 
	<standards-manager%netbsd.org@localhost>, <netbsd-bugs%netbsd.org@localhost>, 
	<gnats-bugs%netbsd.org@localhost>, <gnats-admin%netbsd.org@localhost>
Cc: 
Subject: Re: standards/51024 (NetBSD misses the mandatory waitid() syscall)
Date: Mon, 4 Apr 2016 11:21:03 -0400

 On Apr 4, 10:08am, christos%zoulas.com@localhost (Christos Zoulas) wrote:
 -- Subject: Re: standards/51024 (NetBSD misses the mandatory waitid() syscall
 
 | Do you have the reference where it says it needs to preserve all 32 bits
 | of exit code? I have not found one.
 
 The reason I am asking all this is because although FreeBSD has made the
 change to pass all 32 bits in this particular instance, they have overloaded
 the meaning of si_status, so that now the user code needs to understand
 what context we are in to interpret it properly. I.e.
 
 - it could be a full 32 bit exit code
 - it could be a signal number
 - it could be a composite 'wait status' (as it is always now with NetBSD,
   except in the waitid case...).
 
 kern_exit.c:                    siginfo->si_status = WTERMSIG(p->p_xsig);
 kern_exit.c:                    siginfo->si_status = WTERMSIG(p->p_xsig);
 kern_exit.c:                    siginfo->si_status = p->p_xexit;
 kern_exit.c:                            siginfo->si_status = p->p_xsig;
 kern_exit.c:                            siginfo->si_status = p->p_xsig;
 kern_exit.c:                            siginfo->si_status = SIGCONT;
 kern_sig.c:             p->p_ksi->ksi_status = status;
 
 christos