44 lines
933 B
C
44 lines
933 B
C
#ifndef _FORTIFY_STDLIB_H
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#define _FORTIFY_STDLIB_H
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#include_next <stdlib.h>
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#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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#include_next <limits.h>
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#endif
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#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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#undef realpath
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__typeof__(realpath) __realpath_orig __asm__(__USER_LABEL_PREFIX__ "realpath");
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extern __inline __attribute__((__always_inline__,__gnu_inline__,__artificial__))
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char *realpath(const char *path, char *resolved)
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{
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size_t bos;
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if (resolved) {
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#ifndef PATH_MAX
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#error PATH_MAX unset. A fortified realpath will not work.
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#else
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bos = __builtin_object_size(resolved, 0);
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if (PATH_MAX > bos)
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__builtin_trap();
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#endif
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}
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return __realpath_orig(path, resolved);
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}
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#endif
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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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