From 048625cf2b36a91bcf04c5a1adc02fc5803491ca Mon Sep 17 00:00:00 2001
From: kinichiro <kinichiro.inoguchi@gmail.com>
Date: Sat, 22 Apr 2017 23:08:17 +0900
Subject: Add freezero support

---
 crypto/CMakeLists.txt    |  5 +++++
 crypto/Makefile.am       |  4 ++++
 crypto/compat/freezero.c | 13 +++++++++++++
 3 files changed, 22 insertions(+)
 create mode 100644 crypto/compat/freezero.c

(limited to 'crypto')

diff --git a/crypto/CMakeLists.txt b/crypto/CMakeLists.txt
index d7b65e2..028d840 100644
--- a/crypto/CMakeLists.txt
+++ b/crypto/CMakeLists.txt
@@ -681,6 +681,11 @@ if(NOT HAVE_ASPRINTF)
 	set(EXTRA_EXPORT ${EXTRA_EXPORT} vasprintf)
 endif()
 
+if(NOT HAVE_FREEZERO)
+	set(CRYPTO_SRC ${CRYPTO_SRC} compat/freezero.c)
+	set(EXTRA_EXPORT ${EXTRA_EXPORT} freezero)
+endif()
+
 if(NOT HAVE_GETPAGESIZE)
 	set(CRYPTO_SRC ${CRYPTO_SRC} compat/getpagesize.c)
 endif()
diff --git a/crypto/Makefile.am b/crypto/Makefile.am
index 04b67aa..0e7f9c8 100644
--- a/crypto/Makefile.am
+++ b/crypto/Makefile.am
@@ -84,6 +84,10 @@ if !HAVE_ASPRINTF
 libcompat_la_SOURCES += compat/bsd-asprintf.c
 endif
 
+if !HAVE_FREEZERO
+libcompat_la_SOURCES += compat/freezero.c
+endif
+
 if !HAVE_GETPAGESIZE
 libcompat_la_SOURCES += compat/getpagesize.c
 endif
diff --git a/crypto/compat/freezero.c b/crypto/compat/freezero.c
new file mode 100644
index 0000000..8becc00
--- /dev/null
+++ b/crypto/compat/freezero.c
@@ -0,0 +1,13 @@
+#include <string.h>
+#include <stdlib.h>
+
+void
+freezero(void *ptr, size_t sz)
+{
+	/* This is legal. */
+	if (ptr == NULL)
+		return;
+
+	explicit_bzero(ptr, sz);
+	free(ptr);
+}
-- 
cgit v1.2.3-55-g6feb