include/secure/_stdio.h

   1 /*
   2  * Copyright (c) 2007, 2010 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 _STDIO_H_
  25  #error error "Never use <secure/_stdio.h> directly; include <stdio.h> instead."
  26 #endif
  27
  28 #ifndef _SECURE__STDIO_H_
  29 #define _SECURE__STDIO_H_
  30
  31 #include <secure/_common.h>
  32
  33 #if _USE_FORTIFY_LEVEL > 0
  34
  35 #ifndef __has_builtin
  36 #define _undef__has_builtin
  37 #define __has_builtin(x) 0
  38 #endif
  39
  40 /* sprintf, vsprintf, snprintf, vsnprintf */
  41 #if __has_builtin(__builtin___sprintf_chk) || defined(__GNUC__)
  42 extern int __sprintf_chk (char * __restrict, int, size_t,
  43                           const char * __restrict, ...);
  44
  45 #undef sprintf
  46 #define sprintf(str, ...) \
  47   __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
  48 #endif
  49
  50 #if __DARWIN_C_LEVEL >= 200112L
  51 #if __has_builtin(__builtin___snprintf_chk) || defined(__GNUC__)
  52 extern int __snprintf_chk (char * __restrict, size_t, int, size_t,
  53                            const char * __restrict, ...);
  54
  55 #undef snprintf
  56 #define snprintf(str, len, ...) \
  57   __builtin___snprintf_chk (str, len, 0, __darwin_obsz(str), __VA_ARGS__)
  58 #endif
  59
  60 #if __has_builtin(__builtin___vsprintf_chk) || defined(__GNUC__)
  61 extern int __vsprintf_chk (char * __restrict, int, size_t,
  62                            const char * __restrict, va_list);
  63
  64 #undef vsprintf
  65 #define vsprintf(str, format, ap) \
  66   __builtin___vsprintf_chk (str, 0, __darwin_obsz(str), format, ap)
  67 #endif
  68
  69 #if __has_builtin(__builtin___vsnprintf_chk) || defined(__GNUC__)
  70 extern int __vsnprintf_chk (char * __restrict, size_t, int, size_t,
  71                             const char * __restrict, va_list);
  72
  73 #undef vsnprintf
  74 #define vsnprintf(str, len, format, ap) \
  75   __builtin___vsnprintf_chk (str, len, 0, __darwin_obsz(str), format, ap)
  76 #endif
  77
  78 #endif /* __DARWIN_C_LEVEL >= 200112L */
  79
  80 #ifdef _undef__has_builtin
  81 #undef _undef__has_builtin
  82 #undef __has_builtin
  83 #endif
  84
  85 #endif /* _USE_FORTIFY_LEVEL > 0 */
  86 #endif /* _SECURE__STDIO_H_ */