1From 98a3b77cfa775c87010159d49f5b17d84fe1aa7b Mon Sep 17 00:00:00 2001
 2From: Michael Forney <mforney@mforney.org>
 3Date: Tue, 10 Oct 2017 03:07:56 -0700
 4Subject: [PATCH] Add standalone freezero
 5
 6---
 7 lib/libc/stdlib/freezero.c | 32 ++++++++++++++++++++++++++++++++
 8 1 file changed, 32 insertions(+)
 9 create mode 100644 lib/libc/stdlib/freezero.c
10
11diff --git a/lib/libc/stdlib/freezero.c b/lib/libc/stdlib/freezero.c
12new file mode 100644
13index 00000000000..31face3828b
14--- /dev/null
15+++ b/lib/libc/stdlib/freezero.c
16@@ -0,0 +1,32 @@
17+/*
18+ * Copyright (c) 2008, 2010, 2011, 2016 Otto Moerbeek <otto@drijf.net>
19+ * Copyright (c) 2012 Matthew Dempsky <matthew@openbsd.org>
20+ * Copyright (c) 2008 Damien Miller <djm@openbsd.org>
21+ * Copyright (c) 2000 Poul-Henning Kamp <phk@FreeBSD.org>
22+ *
23+ * Permission to use, copy, modify, and distribute this software for any
24+ * purpose with or without fee is hereby granted, provided that the above
25+ * copyright notice and this permission notice appear in all copies.
26+ *
27+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
28+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
29+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
30+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
31+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
32+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
33+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
34+ */
35+
36+#include <string.h>
37+#include <stdlib.h>
38+
39+void
40+freezero(void *ptr, size_t sz)
41+{
42+	/* This is legal. */
43+	if (ptr == NULL)
44+		return;
45+
46+	explicit_bzero(ptr, sz);
47+	free(ptr);
48+}
49-- 
502.14.2
51