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sin 2015-01-28 15:14:49 +00:00
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21
LICENSE Normal file
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MIT/X Consortium License
© 2015 Dimitris Papastamos <sin@2f30.org>
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.

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Makefile Normal file
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PREFIX = /usr/local
install:
mkdir -p $(DESTDIR)$(PREFIX)/include/fortify
cp -f include/* $(DESTDIR)$(PREFIX)/include/fortify
.PHONY:
install

238
include/string.h Normal file
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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