===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/mesg/mesg.c,v
retrieving revision 1.12
retrieving revision 1.13
diff -u -r1.12 -r1.13
--- src/usr.bin/mesg/mesg.c	2016/07/07 09:26:26	1.12
+++ src/usr.bin/mesg/mesg.c	2018/08/03 06:57:34	1.13
@@ -1,4 +1,4 @@
-/*	$OpenBSD: mesg.c,v 1.12 2016/07/07 09:26:26 semarie Exp $	*/
+/*	$OpenBSD: mesg.c,v 1.13 2018/08/03 06:57:34 deraadt Exp $	*/
 /*	$NetBSD: mesg.c,v 1.4 1994/12/23 07:16:32 jtc Exp $	*/
 
 /*
@@ -52,9 +52,6 @@
 	char *tty;
 	int ch;
 
-	if (pledge("stdio rpath fattr", NULL) == -1)
-		err(2, "pledge");
-
 	while ((ch = getopt(argc, argv, "")) != -1)
 		switch (ch) {
 		case '?':
@@ -66,6 +63,12 @@
 
 	if ((tty = ttyname(STDERR_FILENO)) == NULL)
 		err(2, "ttyname");
+
+	if (unveil(tty, "rw") == -1)
+		err(1, "unveil");
+	if (pledge("stdio rpath fattr", NULL) == -1)
+		err(1, "unveil");
+
 	if (stat(tty, &sb) < 0)
 		err(2, "%s", tty);