From af80178b85984b7a8086ae8892387a94ec77de99 Mon Sep 17 00:00:00 2001
From: "Todd C. Miller" <Todd.Miller@courtesan.com>
Date: Wed, 17 Jan 2001 16:34:36 +0000
Subject: [PATCH] Block all signals in Exit() to avoid a signal race.  There is
 still a tiny window but I'm not going to worry about it.

---
 visudo.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/visudo.c b/visudo.c
index 09f3a19a6..98943b654 100644
--- a/visudo.c
+++ b/visudo.c
@@ -653,6 +653,18 @@ static RETSIGTYPE
 Exit(sig)
     int sig;
 {
+#ifdef POSIX_SIGNALS
+    sigset_t mask;
+
+    sigfillset(&mask);
+    (void) sigprocmask(SIG_BLOCK, &mask, NULL);
+#else
+    unsigned int mask;
+
+    mask = 0xffffffff;
+    (void) sigblock((int) mask);
+#endif /* POSIX_SIGNALS */
+
     (void) unlink(stmp);
 
     if (sig > 0)