123 lines
3.0 KiB
C
123 lines
3.0 KiB
C
/*
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* Copyright (C) 2015 Dimitris Papastamos <sin@2f30.org>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _FORTIFY_STDIO_H
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#define _FORTIFY_STDIO_H
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#include_next <stdio.h>
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#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
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#include "fortify-headers.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#undef fgets
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#undef fread
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#undef fwrite
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#undef vsprintf
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#undef vsnprintf
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#undef snprintf
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#undef sprintf
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_FORTIFY_FN(fgets) char *fgets(char *__s, int __n, FILE *__f)
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{
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size_t __b = __builtin_object_size(__s, 0);
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if ((size_t)__n > __b)
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__builtin_trap();
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return __orig_fgets(__s, __n, __f);
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}
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_FORTIFY_FN(fread) size_t fread(void *__d, size_t __n, size_t __m, FILE *__f)
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{
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size_t __b = __builtin_object_size(__d, 0);
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if (__n != 0 && (__n * __m) / __n != __m)
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__builtin_trap();
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if (__n * __m > __b)
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__builtin_trap();
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return __orig_fread(__d, __n, __m, __f);
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}
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_FORTIFY_FN(fwrite) size_t fwrite(const void *__d, size_t __n, size_t __m, FILE *__f)
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{
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size_t __b = __builtin_object_size(__d, 0);
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if (__n != 0 && (__n * __m) / __n != __m)
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__builtin_trap();
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if (__n * __m > __b)
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__builtin_trap();
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return __orig_fwrite(__d, __n, __m, __f);
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}
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_FORTIFY_FN(vsnprintf) int vsnprintf(char *__s, size_t __n, const char *__f,
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__builtin_va_list __v)
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{
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size_t __b = __builtin_object_size(__s, 0);
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if (__n > __b)
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__builtin_trap();
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return __orig_vsnprintf(__s, __n, __f, __v);
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}
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_FORTIFY_FN(vsprintf) int vsprintf(char *__s, const char *__f, __builtin_va_list __v)
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{
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size_t __b = __builtin_object_size(__s, 0);
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int __r;
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if (__b != (size_t)-1) {
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__r = __orig_vsnprintf(__s, __b, __f, __v);
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if (__r != -1 && (size_t)__r >= __b)
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__builtin_trap();
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} else {
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__r = __orig_vsprintf(__s, __f, __v);
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}
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return __r;
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}
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_FORTIFY_FN(snprintf) int snprintf(char *__s, size_t __n, const char *__f, ...)
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{
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size_t __b = __builtin_object_size(__s, 0);
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if (__n > __b)
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__builtin_trap();
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return __orig_snprintf(__s, __n, __f, __builtin_va_arg_pack());
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}
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_FORTIFY_FN(sprintf) int sprintf(char *__s, const char *__f, ...)
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{
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size_t __b = __builtin_object_size(__s, 0);
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int __r;
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if (__b != (size_t)-1) {
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__r = __orig_snprintf(__s, __b, __f, __builtin_va_arg_pack());
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if (__r != -1 && (size_t)__r >= __b)
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__builtin_trap();
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} else {
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__r = __orig_sprintf(__s, __f, __builtin_va_arg_pack());
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}
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return __r;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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#endif
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