From: Szabolcs Nagy <nsz@port70.net>
Date: Sat, 20 Aug 2016 15:04:44 +0000 (+0200)
Subject: add SS_AUTODISARM sigaltstack ss_flags from linux v4.7 to signal.h
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=9680e1d03a794b0e0d5815c749478228ed40a36d;p=musl

add SS_AUTODISARM sigaltstack ss_flags from linux v4.7 to signal.h

only matters if swapcontext is used in a signal handler running on an
altstack, new in linux commit 2a74213838104a41588d86fd5e8d344972891ace
---

diff --git a/include/signal.h b/include/signal.h
index a16094c5..2c8b3d55 100644
--- a/include/signal.h
+++ b/include/signal.h
@@ -239,6 +239,8 @@ void (*sigset(int, void (*)(int)))(int);
 #define POLL_HUP 6
 #define SS_ONSTACK    1
 #define SS_DISABLE    2
+#define SS_AUTODISARM (1U << 31)
+#define SS_FLAG_BITS SS_AUTODISARM
 #endif
 
 #if defined(_BSD_SOURCE) || defined(_GNU_SOURCE)