2015-01-28 15:14:49 +00:00
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#ifndef FORTIFY_STRING_H_
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#define FORTIFY_STRING_H_
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#include_next <string.h>
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#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
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static inline __attribute__ ((always_inline))
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void *__fortify_memcpy(void *__restrict dest, const void *__restrict src, size_t n)
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{
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size_t bos = __builtin_object_size(dest, 0);
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if (bos == (size_t)-1)
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return memcpy(dest, src, n);
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2015-01-28 15:36:44 +00:00
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if (__builtin_constant_p(n) && n > bos)
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__builtin_trap();
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return memcpy(dest, src, n);
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2015-01-28 15:14:49 +00:00
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}
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#undef memcpy
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#define memcpy(dest, src, n) __fortify_memcpy(dest, src, n)
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static inline __attribute__ ((always_inline))
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void *__fortify_memmove(void *__restrict dest, const void *__restrict src, size_t n)
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{
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size_t bos = __builtin_object_size(dest, 0);
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if (bos == (size_t)-1)
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return memmove(dest, src, n);
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2015-01-28 15:36:44 +00:00
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if (__builtin_constant_p(n) && n > bos)
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__builtin_trap();
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return memmove(dest, src, n);
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2015-01-28 15:14:49 +00:00
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}
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#undef memmove
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#define memmove(dest, src, n) __fortify_memmove(dest, src, n)
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static inline __attribute__ ((always_inline))
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void *__fortify_memset(void *dest, int c, size_t n)
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{
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size_t bos = __builtin_object_size(dest, 0);
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if (bos == (size_t)-1)
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return memset(dest, c, n);
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2015-01-28 15:36:44 +00:00
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if (__builtin_constant_p(n) && n > bos)
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__builtin_trap();
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return memset(dest, c, n);
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2015-01-28 15:14:49 +00:00
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}
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#undef memset
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#define memset(dest, src, n) __fortify_memset(dest, src, n)
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static inline __attribute__ ((always_inline))
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char *__fortify_strcat(char *__restrict dest, const char *__restrict src)
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{
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size_t bos = __builtin_object_size(dest, 0);
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if (bos == (size_t)-1)
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return strcat(dest, src);
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2015-01-28 15:36:44 +00:00
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if (strlen(src) + strlen(dest) + 1 > bos)
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__builtin_trap();
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return strcat(dest, src);
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2015-01-28 15:14:49 +00:00
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}
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#undef strcat
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#define strcat(dest, src) __fortify_strcat(dest, src)
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static inline __attribute__ ((always_inline))
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char *__fortify_strcpy(char *__restrict dest, const char *__restrict src)
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{
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size_t bos = __builtin_object_size(dest, 0);
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if (bos == (size_t)-1)
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return strcpy(dest, src);
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2015-01-28 15:36:44 +00:00
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if (strlen(src) + 1 > bos)
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__builtin_trap();
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return strcpy(dest, src);
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2015-01-28 15:14:49 +00:00
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}
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#undef strcpy
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#define strcpy(dest, src) __fortify_strcpy(dest, src)
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static inline __attribute__ ((always_inline))
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char *__fortify_strncat(char *__restrict dest, const char *__restrict src, size_t n)
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{
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size_t bos = __builtin_object_size(dest, 0);
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2015-01-28 15:36:44 +00:00
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size_t slen, dlen;
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2015-01-28 15:14:49 +00:00
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if (bos == (size_t)-1)
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return strncat(dest, src, n);
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2015-01-28 15:36:44 +00:00
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if (__builtin_constant_p(n) && n > bos) {
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slen = strlen(src);
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dlen = strlen(dest);
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if (slen > n)
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slen = n;
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if (slen + dlen + 1 > bos)
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__builtin_trap();
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}
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return strncat(dest, src, n);
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2015-01-28 15:14:49 +00:00
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}
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#undef strncat
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#define strncat(dest, src, n) __fortify_strcat(dest, src, n)
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static inline __attribute__ ((always_inline))
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char *__fortify_strncpy(char *__restrict dest, const char *__restrict src, size_t n)
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{
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size_t bos = __builtin_object_size(dest, 0);
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if (bos == (size_t)-1)
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return strncpy(dest, src, n);
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2015-01-28 15:36:44 +00:00
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if (__builtin_constant_p(n) && n > bos)
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__builtin_trap();
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return strncpy(dest, src, n);
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2015-01-28 15:14:49 +00:00
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}
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#undef strncpy
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#define strncpy(dest, src, n) __fortify_strcpy(dest, src, n)
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#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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static inline __attribute__ ((always_inline))
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size_t __fortify_strlcat(char *__restrict dest, const char *__restrict src, size_t n)
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{
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size_t bos = __builtin_object_size(dest, 0);
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if (bos == (size_t)-1)
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return strlcat(dest, src, n);
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2015-01-28 15:36:44 +00:00
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if (__builtin_constant_p(n) && n > bos)
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__builtin_trap();
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return strlcat(dest, src, n);
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2015-01-28 15:14:49 +00:00
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}
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#undef strlcat
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#define strlcat(dest, src, n) __fortify_strlcat(dest, src, n)
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static inline __attribute__ ((always_inline))
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size_t __fortify_strlcpy(char *__restrict dest, const char *__restrict src, size_t n)
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{
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size_t bos = __builtin_object_size(dest, 0);
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if (bos == (size_t)-1)
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return strlcpy(dest, src, n);
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2015-01-28 15:36:44 +00:00
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if (__builtin_constant_p(n) && n > bos)
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__builtin_trap();
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return strlcpy(dest, src, n);
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2015-01-28 15:14:49 +00:00
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}
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#undef strlcpy
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#define strlcpy(dest, src, n) __fortify_strlcpy(dest, src, n)
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#endif
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#endif
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#endif
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