From: deraadt <deraadt@openbsd.org>
Date: Wed, 15 Dec 2021 04:01:52 +0000 (+0000)
Subject: getcwd() operates on buffers of PATH_MAX including the NUL, and the +1
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=993f8b84c9ce4be4421cebb4b89dce2fe71fa7b0;p=openbsd

getcwd() operates on buffers of PATH_MAX including the NUL, and the +1
is not unneccesary. Different buffer sizes are actually dangerous, though
major problems are strangely rare.
ok millert
---

diff --git a/bin/ksh/misc.c b/bin/ksh/misc.c
index 672b5416419..3d1e0cd4afb 100644
--- a/bin/ksh/misc.c
+++ b/bin/ksh/misc.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: misc.c,v 1.76 2020/10/26 18:16:51 tb Exp $	*/
+/*	$OpenBSD: misc.c,v 1.77 2021/12/15 04:01:52 deraadt Exp $	*/
 
 /*
  * Miscellaneous functions
@@ -1135,7 +1135,7 @@ ksh_get_wd(char *buf, int bsize)
 	/* Assume getcwd() available */
 	if (!buf) {
 		bsize = PATH_MAX;
-		b = alloc(PATH_MAX + 1, ATEMP);
+		b = alloc(bsize, ATEMP);
 	} else
 		b = buf;