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Add realpath() check

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sin 2015-02-24 19:04:02 +00:00
parent eecef18261
commit f05c09fac8
1 changed files with 35 additions and 0 deletions
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35
include/stdlib.h Normal file
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@ -0,0 +1,35 @@
#ifndef FORTIFY_STDLIB_H_
#define FORTIFY_STDLIB_H_
#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
|| defined(_BSD_SOURCE)
#include_next <limits.h>
#endif
#include_next <stdlib.h>
#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
|| defined(_BSD_SOURCE)
static inline __attribute__ ((always_inline))
char *
__fortify_realpath(const char *path, char *resolved)
{
size_t bos;
if (resolved) {
bos = __builtin_object_size(resolved, 0);
if (PATH_MAX > bos)
__builtin_trap();
}
return realpath(path, resolved);
}
#undef realpath
#define realpath(path, resolved) __fortify_realpath(path, resolved)
#endif
#endif
#endif