[src/trunk]: src/sys/kern set the signal flag when the signal was sent to eve...

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

details:   https://anonhg.NetBSD.org/src/rev/3ad8ce860e7d
branches:  trunk
changeset: 349309:3ad8ce860e7d
user:      christos <christos%NetBSD.org@localhost>
date:      Mon Dec 05 22:07:16 2016 +0000

description:
set the signal flag when the signal was sent to every lwp, not to just an
individual one.

diffstat:

 sys/kern/sys_ptrace_common.c |  13 ++++++++++---
 1 files changed, 10 insertions(+), 3 deletions(-)

diffs (34 lines):

diff -r 5dda52ea86fa -r 3ad8ce860e7d sys/kern/sys_ptrace_common.c
--- a/sys/kern/sys_ptrace_common.c      Mon Dec 05 22:05:53 2016 +0000
+++ b/sys/kern/sys_ptrace_common.c      Mon Dec 05 22:07:16 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: sys_ptrace_common.c,v 1.5 2016/11/19 19:06:12 christos Exp $   */
+/*     $NetBSD: sys_ptrace_common.c,v 1.6 2016/12/05 22:07:16 christos Exp $   */
 
 /*-
  * Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
@@ -118,7 +118,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: sys_ptrace_common.c,v 1.5 2016/11/19 19:06:12 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: sys_ptrace_common.c,v 1.6 2016/12/05 22:07:16 christos Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_ptrace.h"
@@ -891,7 +891,14 @@
                if (lt) {
                        lwp_addref(lt);
                        pl.pl_lwpid = lt->l_lid;
-                       if (lt->l_lid == t->p_sigctx.ps_lwp)
+                       /*
+                        * If we match the lwp, or it was sent to every lwp,
+                        * we set PL_EVENT_SIGNAL.
+                        * XXX: ps_lwp == 0 means everyone and noone, so
+                        * check ps_signo too.
+                        */
+                       if (lt->l_lid == t->p_sigctx.ps_lwp
+                           || (t->p_sigctx.ps_lwp == 0 && t->p_sigctx.ps_signo))
                                pl.pl_event = PL_EVENT_SIGNAL;
                }
                mutex_exit(t->p_lock);