120 lines
3.1 KiB
C
120 lines
3.1 KiB
C
#ifndef _FORTIFY_STDIO_H
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#define _FORTIFY_STDIO_H
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#include_next <stdio.h>
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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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#undef fgets
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#undef fread
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#undef fwrite
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#undef vsprintf
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#undef vsnprintf
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#undef snprintf
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#undef sprintf
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__typeof__(fgets) __fgets_orig __asm__(__USER_LABEL_PREFIX__ "fgets");
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extern __inline __attribute__((__always_inline__,__gnu_inline__,__artificial__))
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char *fgets(char *s, int n, FILE *fp)
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{
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size_t bos = __builtin_object_size(s, 0);
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if ((size_t)n > bos)
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__builtin_trap();
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return __fgets_orig(s, n, fp);
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}
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__typeof__(fread) __fread_orig __asm__(__USER_LABEL_PREFIX__ "fread");
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extern __inline __attribute__((__always_inline__,__gnu_inline__,__artificial__))
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size_t fread(void *dst, size_t n, size_t nmemb, FILE *fp)
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{
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size_t bos = __builtin_object_size(dst, 0);
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if (n != 0 && (n * nmemb) / n != nmemb)
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__builtin_trap();
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if (n * nmemb > bos)
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__builtin_trap();
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return __fread_orig(dst, n, nmemb, fp);
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}
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__typeof__(fwrite) __fwrite_orig __asm__(__USER_LABEL_PREFIX__ "fwrite");
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extern __inline __attribute__((__always_inline__,__gnu_inline__,__artificial__))
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size_t fwrite(const void *dst, size_t n, size_t nmemb, FILE *fp)
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{
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size_t bos = __builtin_object_size(dst, 0);
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if (n != 0 && (n * nmemb) / n != nmemb)
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__builtin_trap();
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if (n * nmemb > bos)
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__builtin_trap();
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return __fwrite_orig(dst, n, nmemb, fp);
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}
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__typeof__(vsnprintf) __vsnprintf_orig __asm__(__USER_LABEL_PREFIX__ "vsnprintf");
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extern __inline __attribute__((__always_inline__,__gnu_inline__,__artificial__))
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int vsnprintf(char *s, size_t n, const char *fmt, __builtin_va_list ap)
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{
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size_t bos = __builtin_object_size(s, 0);
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if (n > bos)
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__builtin_trap();
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return __vsnprintf_orig(s, n, fmt, ap);
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}
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__typeof__(vsprintf) __vsprintf_orig __asm__(__USER_LABEL_PREFIX__ "vsprintf");
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extern __inline __attribute__((__always_inline__,__gnu_inline__,__artificial__))
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int vsprintf(char *s, const char *fmt, __builtin_va_list ap)
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{
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size_t bos = __builtin_object_size(s, 0);
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int r;
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if (bos != (size_t)-1) {
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r = __vsnprintf_orig(s, bos, fmt, ap);
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if (r != -1 && (size_t)r >= bos)
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__builtin_trap();
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} else {
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r = __vsprintf_orig(s, fmt, ap);
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}
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return r;
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}
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__typeof__(snprintf) __snprintf_orig __asm__(__USER_LABEL_PREFIX__ "snprintf");
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extern __inline __attribute__((__always_inline__,__gnu_inline__,__artificial__))
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int snprintf(char *s, size_t n, const char *fmt, ...)
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{
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size_t bos = __builtin_object_size(s, 0);
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if (n > bos)
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__builtin_trap();
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return __snprintf_orig(s, n, fmt, __builtin_va_arg_pack());
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}
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__typeof__(sprintf) __sprintf_orig __asm__(__USER_LABEL_PREFIX__ "sprintf");
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extern __inline __attribute__((__always_inline__,__gnu_inline__,__artificial__))
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int sprintf(char *s, const char *fmt, ...)
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{
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size_t bos = __builtin_object_size(s, 0);
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int r;
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if (bos != (size_t)-1) {
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r = __snprintf_orig(s, bos, fmt, __builtin_va_arg_pack());
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if (r != -1 && (size_t)r >= bos)
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__builtin_trap();
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} else {
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r = __sprintf_orig(s, fmt, __builtin_va_arg_pack());
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}
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return r;
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}
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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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