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#ifndef FORTIFY_STRING_H_
#define FORTIFY_STRING_H_
#include_next <string.h>
#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
static inline __attribute__ ((always_inline))
void *__memcpy_chk(void *__restrict dest, const void *__restrict src, size_t ssize,
size_t dsize)
{
if (ssize > dsize)
__builtin_trap();
return memcpy(dest, src, ssize);
}
static inline __attribute__ ((always_inline))
void *__fortify_memcpy(void *__restrict dest, const void *__restrict src, size_t n)
{
size_t bos = __builtin_object_size(dest, 0);
if (bos == (size_t)-1)
return memcpy(dest, src, n);
if (__builtin_constant_p(n))
if (n <= bos)
return memcpy(dest, src, n);
return __memcpy_chk(dest, src, n, bos);
}
#undef memcpy
#define memcpy(dest, src, n) __fortify_memcpy(dest, src, n)
static inline __attribute__ ((always_inline))
void *__memmove_chk(void *__restrict dest, const void *__restrict src, size_t ssize,
size_t dsize)
{
if (ssize > dsize)
__builtin_trap();
return memmove(dest, src, ssize);
}
static inline __attribute__ ((always_inline))
void *__fortify_memmove(void *__restrict dest, const void *__restrict src, size_t n)
{
size_t bos = __builtin_object_size(dest, 0);
if (bos == (size_t)-1)
return memmove(dest, src, n);
if (__builtin_constant_p(n))
if (n <= bos)
return memmove(dest, src, n);
return __memmove_chk(dest, src, n, bos);
}
#undef memmove
#define memmove(dest, src, n) __fortify_memmove(dest, src, n)
static inline __attribute__ ((always_inline))
void *__memset_chk(void *dest, int c, size_t n, size_t dsize)
{
if (n > dsize)
__builtin_trap();
return memset(dest, c, n);
}
static inline __attribute__ ((always_inline))
void *__fortify_memset(void *dest, int c, size_t n)
{
size_t bos = __builtin_object_size(dest, 0);
if (bos == (size_t)-1)
return memset(dest, c, n);
if (__builtin_constant_p(n))
if (n <= bos)
return memset(dest, c, n);
return __memset_chk(dest, c, n, bos);
}
#undef memset
#define memset(dest, src, n) __fortify_memset(dest, src, n)
static inline __attribute__ ((always_inline))
char *__strcat_chk(char *__restrict dest, const char *__restrict src, size_t n)
{
size_t slen = strlen(src);
size_t dlen = strlen(dest);
if (slen + dlen + 1 > n)
__builtin_trap();
return strcat(dest, src);
}
static inline __attribute__ ((always_inline))
char *__fortify_strcat(char *__restrict dest, const char *__restrict src)
{
size_t bos = __builtin_object_size(dest, 0);
if (bos == (size_t)-1)
return strcat(dest, src);
return __strcat_chk(dest, src, bos);
}
#undef strcat
#define strcat(dest, src) __fortify_strcat(dest, src)
static inline __attribute__ ((always_inline))
char *__strcpy_chk(char *__restrict dest, const char *__restrict src, size_t n)
{
size_t slen = strlen(src);
if (slen + 1 > n)
__builtin_trap();
return strcpy(dest, src);
}
static inline __attribute__ ((always_inline))
char *__fortify_strcpy(char *__restrict dest, const char *__restrict src)
{
size_t bos = __builtin_object_size(dest, 0);
if (bos == (size_t)-1)
return strcpy(dest, src);
return __strcpy_chk(dest, src, bos);
}
#undef strcpy
#define strcpy(dest, src) __fortify_strcpy(dest, src)
static inline __attribute__ ((always_inline))
char *__strncat_chk(char *__restrict dest, const char *__restrict src, size_t n,
size_t dsize)
{
size_t slen = strlen(src);
size_t dlen = strlen(dest);
if (slen > n) slen = n;
if (slen + dlen + 1 > dsize)
__builtin_trap();
return strncat(dest, src, n);
}
static inline __attribute__ ((always_inline))
char *__fortify_strncat(char *__restrict dest, const char *__restrict src, size_t n)
{
size_t bos = __builtin_object_size(dest, 0);
if (bos == (size_t)-1)
return strncat(dest, src, n);
if (__builtin_constant_p(n))
if (n <= bos)
return strncat(dest, src, n);
return __strncat_chk(dest, src, n, bos);
}
#undef strncat
#define strncat(dest, src, n) __fortify_strcat(dest, src, n)
static inline __attribute__ ((always_inline))
char *__strncpy_chk(char *__restrict dest, const char *__restrict src, size_t n,
size_t dsize)
{
if (n > dsize)
__builtin_trap();
return strncpy(dest, src, n);
}
static inline __attribute__ ((always_inline))
char *__fortify_strncpy(char *__restrict dest, const char *__restrict src, size_t n)
{
size_t bos = __builtin_object_size(dest, 0);
if (bos == (size_t)-1)
return strncpy(dest, src, n);
if (__builtin_constant_p(n))
if (n <= bos)
return strncpy(dest, src, n);
return __strncpy_chk(dest, src, n, bos);
}
#undef strncpy
#define strncpy(dest, src, n) __fortify_strcpy(dest, src, n)
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
static inline __attribute__ ((always_inline))
size_t __strlcat_chk(char *__restrict dest, const char *__restrict src, size_t n,
size_t dsize)
{
if (n > dsize)
__builtin_trap();
return strlcat(dest, src, n);
}
static inline __attribute__ ((always_inline))
size_t __fortify_strlcat(char *__restrict dest, const char *__restrict src, size_t n)
{
size_t bos = __builtin_object_size(dest, 0);
if (bos == (size_t)-1)
return strlcat(dest, src, n);
if (__builtin_constant_p(n)) {
if (n <= bos)
return strlcat(dest, src, n);
}
return __strlcat_chk(dest, src, n, bos);
}
#undef strlcat
#define strlcat(dest, src, n) __fortify_strlcat(dest, src, n)
static inline __attribute__ ((always_inline))
size_t __strlcpy_chk(char *__restrict dest, const char *__restrict src, size_t n,
size_t dsize)
{
if (n > dsize)
__builtin_trap();
return strlcpy(dest, src, n);
}
static inline __attribute__ ((always_inline))
size_t __fortify_strlcpy(char *__restrict dest, const char *__restrict src, size_t n)
{
size_t bos = __builtin_object_size(dest, 0);
if (bos == (size_t)-1)
return strlcpy(dest, src, n);
if (__builtin_constant_p(n)) {
if (n <= bos)
return strlcpy(dest, src, n);
}
return __strlcpy_chk(dest, src, n, bos);
}
#undef strlcpy
#define strlcpy(dest, src, n) __fortify_strlcpy(dest, src, n)
#endif
#endif
#endif
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