init(8): fix signal handler boolean type and qualifier

The variable "clang" is modified from a signal handler.  Change it
from an 'int' to a 'sig_atomic_t' and mark it 'volatile', as we
recommend in signal(3).

ok millert@ kn@

diff --git a/sbin/init/init.c b/sbin/init/init.c
index 9d9b599..cf7ed60 100644 (file)
--- a/sbin/init/init.c
+++ b/sbin/init/init.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: init.c,v 1.71 2021/10/24 21:24:21 deraadt Exp $       */
+/*     $OpenBSD: init.c,v 1.72 2022/09/10 00:49:47 cheloha Exp $       */
 /*     $NetBSD: init.c,v 1.22 1996/05/15 23:29:33 jtc Exp $    */
 
 /*-
@@ -176,7 +176,8 @@ void setsecuritylevel(int);
 void setprocresources(char *);
 int getsecuritylevel(void);
 int setupargv(session_t *, struct ttyent *);
-int clang;
+
+volatile sig_atomic_t clang;
 
 void clear_session_logs(session_t *);