include/secure/_strings.h

   1 /*
   2  * Copyright (c) 2017 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 #ifndef _STRINGS_H_
  25 # error "Never use <secure/_strings.h> directly; include <strings.h> instead."
  26 #endif
  27
  28 #ifndef _SECURE__STRINGS_H_
  29 #define _SECURE__STRINGS_H_
  30
  31 #include <sys/cdefs.h>
  32 #include <Availability.h>
  33 #include <secure/_common.h>
  34
  35 #if _USE_FORTIFY_LEVEL > 0
  36
  37 /* bcopy and bzero */
  38
  39 /* Removed in Issue 7 */
  40 #if !defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE < 200809L
  41
  42 #if __has_builtin(__builtin___memmove_chk) || defined(__GNUC__)
  43 #undef bcopy
  44 /* void bcopy(const void *src, void *dst, size_t len) */
  45 #define bcopy(src, dest, ...) \
  46                 __builtin___memmove_chk (dest, src, __VA_ARGS__, __darwin_obsz0 (dest))
  47 #endif
  48
  49 #if __has_builtin(__builtin___memset_chk) || defined(__GNUC__)
  50 #undef bzero
  51 /* void bzero(void *s, size_t n) */
  52 #define bzero(dest, ...) \
  53                 __builtin___memset_chk (dest, 0, __VA_ARGS__, __darwin_obsz0 (dest))
  54 #endif
  55
  56 #endif
  57
  58 #endif /* _USE_FORTIFY_LEVEL > 0 */
  59 #endif /* _SECURE__STRINGS_H_ */