[src/trunk]: src/sys/kern From Roger Pau Monne: kill(2) called for a zombie p...

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/bbd03eb3e1a4
branches:  trunk
changeset: 780272:bbd03eb3e1a4
user:      christos <christos%NetBSD.org@localhost>
date:      Wed Jul 18 20:30:07 2012 +0000

description:
>From Roger Pau Monne: kill(2) called for a zombie process should return 0,
according to:
    http://pubs.opengroup.org/onlinepubs/9699919799/functions/kill.html

diffstat:

 sys/kern/sys_sig.c |  11 ++++++-----
 1 files changed, 6 insertions(+), 5 deletions(-)

diffs (33 lines):

diff -r e345d384c2ca -r bbd03eb3e1a4 sys/kern/sys_sig.c
--- a/sys/kern/sys_sig.c        Wed Jul 18 20:09:19 2012 +0000
+++ b/sys/kern/sys_sig.c        Wed Jul 18 20:30:07 2012 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: sys_sig.c,v 1.37 2012/02/19 21:06:57 rmind Exp $       */
+/*     $NetBSD: sys_sig.c,v 1.38 2012/07/18 20:30:07 christos Exp $    */
 
 /*-
  * Copyright (c) 2006, 2007, 2008 The NetBSD Foundation, Inc.
@@ -66,7 +66,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: sys_sig.c,v 1.37 2012/02/19 21:06:57 rmind Exp $");
+__KERNEL_RCSID(0, "$NetBSD: sys_sig.c,v 1.38 2012/07/18 20:30:07 christos Exp $");
 
 #include <sys/param.h>
 #include <sys/kernel.h>
@@ -240,10 +240,11 @@
        if (pid > 0) {
                /* kill single process */
                mutex_enter(proc_lock);
-               p = proc_find(pid);
-               if (p == NULL) {
+               p = proc_find_raw(pid);
+               if (p == NULL || (p->p_stat != SACTIVE && p->p_stat != SSTOP)) {
                        mutex_exit(proc_lock);
-                       return ESRCH;
+                       /* IEEE Std 1003.1-2001: return success for zombies */
+                       return p ? 0 : ESRCH;
                }
                mutex_enter(p->p_lock);
                error = kauth_authorize_process(l->l_cred,