From: kettenis <kettenis@openbsd.org>
Date: Wed, 26 Oct 2022 13:31:06 +0000 (+0000)
Subject: Fix handling of PGIDs in wait4(2) that I broke with the previous commit.
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=ddb514ca016cb1a2d62dcd3156f0baac624f22fd;p=openbsd

Fix handling of PGIDs in wait4(2) that I broke with the previous commit.

ok anton@, millert@
---

diff --git a/sys/kern/kern_exit.c b/sys/kern/kern_exit.c
index b14a0350b2b..a298ba55747 100644
--- a/sys/kern/kern_exit.c
+++ b/sys/kern/kern_exit.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: kern_exit.c,v 1.205 2022/10/25 16:08:26 kettenis Exp $	*/
+/*	$OpenBSD: kern_exit.c,v 1.206 2022/10/26 13:31:06 kettenis Exp $	*/
 /*	$NetBSD: kern_exit.c,v 1.39 1996/04/22 01:38:25 christos Exp $	*/
 
 /*
@@ -639,10 +639,13 @@ sys_wait4(struct proc *q, void *v, register_t *retval)
 	
 	if (SCARG(uap, pid) == WAIT_MYPGRP) {
 		idtype = P_PGID;
-		id = -q->p_p->ps_pgid;
+		id = q->p_p->ps_pgid;
 	} else if (SCARG(uap, pid) == WAIT_ANY) {
 		idtype = P_ALL;
 		id = 0;
+	} else if (pid < 0) {
+		idtype = P_PGID;
+		id = -pid;
 	} else {
 		idtype = P_PID;
 		id = pid;