_stdio.h (2898B) - Raw
1 /* 2 * Copyright (c) 2007, 2010, 2023 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 <_bounds.h> 32 #include <secure/_common.h> 33 34 _LIBC_SINGLE_BY_DEFAULT() 35 36 #if _USE_FORTIFY_LEVEL > 0 37 38 #ifndef __has_builtin 39 #define _undef__has_builtin 40 #define __has_builtin(x) 0 41 #endif 42 43 /* sprintf, vsprintf, snprintf, vsnprintf */ 44 #if __has_builtin(__builtin___sprintf_chk) || defined(__GNUC__) 45 extern int __sprintf_chk (char * __restrict _LIBC_UNSAFE_INDEXABLE, int, size_t, 46 const char * __restrict, ...); 47 48 #undef sprintf 49 #define sprintf(str, ...) \ 50 __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__) 51 #endif 52 53 #if __DARWIN_C_LEVEL >= 200112L 54 #if __has_builtin(__builtin___snprintf_chk) || defined(__GNUC__) 55 extern int __snprintf_chk (char * __restrict _LIBC_COUNT(__maxlen), size_t __maxlen, int, size_t, 56 const char * __restrict, ...); 57 58 #undef snprintf 59 #define snprintf(str, len, ...) \ 60 __builtin___snprintf_chk (str, len, 0, __darwin_obsz(str), __VA_ARGS__) 61 #endif 62 63 #if __has_builtin(__builtin___vsprintf_chk) || defined(__GNUC__) 64 extern int __vsprintf_chk (char * __restrict _LIBC_UNSAFE_INDEXABLE, int, size_t, 65 const char * __restrict, va_list); 66 67 #undef vsprintf 68 #define vsprintf(str, format, ap) \ 69 __builtin___vsprintf_chk (str, 0, __darwin_obsz(str), format, ap) 70 #endif 71 72 #if __has_builtin(__builtin___vsnprintf_chk) || defined(__GNUC__) 73 extern int __vsnprintf_chk (char * __restrict _LIBC_COUNT(__maxlen), size_t __maxlen, int, size_t, 74 const char * __restrict, va_list); 75 76 #undef vsnprintf 77 #define vsnprintf(str, len, format, ap) \ 78 __builtin___vsnprintf_chk (str, len, 0, __darwin_obsz(str), format, ap) 79 #endif 80 81 #endif /* __DARWIN_C_LEVEL >= 200112L */ 82 83 #ifdef _undef__has_builtin 84 #undef _undef__has_builtin 85 #undef __has_builtin 86 #endif 87 88 #endif /* _USE_FORTIFY_LEVEL > 0 */ 89 #endif /* _SECURE__STDIO_H_ */