Libc-1244.1.7.tar.gz

[apple/libc.git] / include / secure / _strings.h

diff --git a/include/secure/_strings.h b/include/secure/_strings.h
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+++ b/include/secure/_strings.h
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+/*
+ * Copyright (c) 2017 Apple Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#ifndef _STRINGS_H_
+# error "Never use <secure/_strings.h> directly; include <strings.h> instead."
+#endif
+
+#ifndef _SECURE__STRINGS_H_
+#define _SECURE__STRINGS_H_
+
+#include <sys/cdefs.h>
+#include <Availability.h>
+#include <secure/_common.h>
+
+#if _USE_FORTIFY_LEVEL > 0
+
+/* bcopy and bzero */
+
+/* Removed in Issue 7 */
+#if !defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE < 200809L
+
+#if __has_builtin(__builtin___memmove_chk) || defined(__GNUC__)
+#undef bcopy
+/* void        bcopy(const void *src, void *dst, size_t len) */
+#define bcopy(src, dest, ...) \
+               __builtin___memmove_chk (dest, src, __VA_ARGS__, __darwin_obsz0 (dest))
+#endif
+
+#if __has_builtin(__builtin___memset_chk) || defined(__GNUC__)
+#undef bzero
+/* void        bzero(void *s, size_t n) */
+#define bzero(dest, ...) \
+               __builtin___memset_chk (dest, 0, __VA_ARGS__, __darwin_obsz0 (dest))
+#endif
+
+#endif
+
+#endif /* _USE_FORTIFY_LEVEL > 0 */
+#endif /* _SECURE__STRINGS_H_ */