[src/trunk]: src/sys/compat/linux32/common ignore signal 64 for now (go uses it)

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

details:   https://anonhg.NetBSD.org/src/rev/672afd388186
branches:  trunk
changeset: 828861:672afd388186
user:      christos <christos%NetBSD.org@localhost>
date:      Sun Jan 07 21:16:00 2018 +0000

description:
ignore signal 64 for now (go uses it)
XXX: pullup-8

diffstat:

 sys/compat/linux32/common/linux32_signal.c |  13 +++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)

diffs (34 lines):

diff -r b42fd9a541fc -r 672afd388186 sys/compat/linux32/common/linux32_signal.c
--- a/sys/compat/linux32/common/linux32_signal.c        Sun Jan 07 21:14:38 2018 +0000
+++ b/sys/compat/linux32/common/linux32_signal.c        Sun Jan 07 21:16:00 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: linux32_signal.c,v 1.18 2015/03/08 17:10:44 christos Exp $ */
+/*     $NetBSD: linux32_signal.c,v 1.19 2018/01/07 21:16:00 christos Exp $ */
 
 /*-
  * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved.
@@ -32,7 +32,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: linux32_signal.c,v 1.18 2015/03/08 17:10:44 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: linux32_signal.c,v 1.19 2018/01/07 21:16:00 christos Exp $");
 
 #include <sys/param.h>
 #include <sys/ucred.h>
@@ -299,6 +299,15 @@
        }
 
        sig = SCARG(uap, signum);
+       /*
+        * XXX: Linux has 33 realtime signals, the go binary wants to
+        * reset all of them; nothing else uses the last RT signal, so for
+        * now ignore it.
+        */
+       if (sig == LINUX__NSIG) {
+               uprintf("%s: setting signal %d ignored\n", __func__, sig);
+               sig--;  /* back to 63 which is ignored */
+       }
        if (sig < 0 || sig >= LINUX32__NSIG) {
                DPRINTF(("rt_sigaction: Bad signal number %d %d\n", 
                    sig, LINUX32__NSIG));