From: Russ Cox <rsc@golang.org>
Date: Fri, 15 Feb 2013 18:13:19 +0000 (-0500)
Subject: runtime: check rt_sigaction return values on linux
X-Git-Tag: go1.1rc2~1002
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=d3d89ae7d21d8253626aebf212a63d670561f659;p=gostls13.git

runtime: check rt_sigaction return values on linux

(If the mask size is wrong the system call fails.)

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7305097
---

diff --git a/src/pkg/runtime/signal_linux_386.c b/src/pkg/runtime/signal_linux_386.c
index 8b9c5e43a5..1fdb03f572 100644
--- a/src/pkg/runtime/signal_linux_386.c
+++ b/src/pkg/runtime/signal_linux_386.c
@@ -128,7 +128,8 @@ runtime·setsig(int32 i, void (*fn)(int32, Siginfo*, void*, G*), bool restart)
 	// under nohup and do not set explicit handler.
 	if(i == SIGHUP) {
 		runtime·memclr((byte*)&sa, sizeof sa);
-		runtime·rt_sigaction(i, nil, &sa, sizeof(sa.sa_mask));
+		if(runtime·rt_sigaction(i, nil, &sa, sizeof(sa.sa_mask)) != 0)
+			runtime·throw("rt_sigaction read failure");
 		if(sa.k_sa_handler == SIG_IGN)
 			return;
 	}
diff --git a/src/pkg/runtime/signal_linux_arm.c b/src/pkg/runtime/signal_linux_arm.c
index e2b1500934..577ac29bfa 100644
--- a/src/pkg/runtime/signal_linux_arm.c
+++ b/src/pkg/runtime/signal_linux_arm.c
@@ -144,7 +144,8 @@ runtime·setsig(int32 i, void (*fn)(int32, Siginfo*, void*, G*), bool restart)
 	// under nohup and do not set explicit handler.
 	if(i == SIGHUP) {
 		runtime·memclr((byte*)&sa, sizeof sa);
-		runtime·rt_sigaction(i, nil, &sa, sizeof(sa.sa_mask));
+		if(runtime·rt_sigaction(i, nil, &sa, sizeof(sa.sa_mask)) != 0)
+			runtime·throw("rt_sigaction read failure");
 		if(sa.sa_handler == SIG_IGN)
 			return;
 	}