use size_t for the size of buffers and strings, not int.

sprinkle some bounded attributes while here.

ok deraadt@

2 files changed, 8 insertions, 6 deletions

diff --git a/sys/lib/libkern/getsn.c b/sys/lib/libkern/getsn.c
index 3bb3f218ad7..4342c1024a6 100644
--- a/sys/lib/libkern/getsn.c
+++ b/sys/lib/libkern/getsn.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: getsn.c,v 1.6 2012/12/05 23:20:22 deraadt Exp $	*/
+/*	$OpenBSD: getsn.c,v 1.7 2018/04/25 11:15:58 dlg Exp $	*/
 
 /*
  * Copyright (c) 1996 Theo de Raadt
@@ -29,10 +29,11 @@
 #include <sys/systm.h>
 #include <dev/cons.h>
 
-int
-getsn(char *cp, int size)
+size_t
+getsn(char *cp, size_t size)
 {
-	int len = 0, c;
+	size_t len = 0;
+	int  c;
 	char *lp = cp;
 
 	while (1) {
diff --git a/sys/lib/libkern/libkern.h b/sys/lib/libkern/libkern.h
index d743920ea0b..db020a8ed03 100644
--- a/sys/lib/libkern/libkern.h
+++ b/sys/lib/libkern/libkern.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: libkern.h,v 1.34 2014/07/13 23:49:40 uebayasi Exp $	*/
+/*	$OpenBSD: libkern.h,v 1.35 2018/04/25 11:15:58 dlg Exp $	*/
 /*	$NetBSD: libkern.h,v 1.7 1996/03/14 18:52:08 christos Exp $	*/
 
 /*-
@@ -183,7 +183,8 @@ size_t	 strlcat(char *, const char *, size_t)
 int	 strcmp(const char *, const char *);
 int	 strncmp(const char *, const char *, size_t);
 int	 strncasecmp(const char *, const char *, size_t);
-int	 getsn(char *, int);
+size_t	 getsn(char *, size_t)
+		__attribute__ ((__bounded__(__string__,1,2)));
 char	*strchr(const char *, int);
 char	*strrchr(const char *, int);
 int	 timingsafe_bcmp(const void *, const void *, size_t);