1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
#ifndef _FORTIFY_STDIO_H
#define _FORTIFY_STDIO_H
#include_next <stdio.h>
#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
#ifdef __cplusplus
extern "C" {
#endif
#undef fgets
#undef fread
#undef fwrite
#undef vsprintf
#undef vsnprintf
#undef snprintf
#undef sprintf
extern char *__fgets_orig(char *, int, FILE *)
__asm__(__USER_LABEL_PREFIX__ "fgets");
extern __inline __attribute__((__always_inline__,__gnu_inline____,__artificial__))
char *fgets(char *s, int n, FILE *fp)
{
size_t bos = __builtin_object_size(s, 0);
if ((size_t)n > bos)
__builtin_trap();
return __fgets_orig(s, n, fp);
}
extern size_t __fread_orig(void *, size_t, size_t, FILE *)
__asm__(__USER_LABEL_PREFIX__ "fread");
extern __inline __attribute__((__always_inline__,__gnu_inline__,__artificial__))
size_t fread(void *dst, size_t n, size_t nmemb, FILE *fp)
{
size_t bos = __builtin_object_size(dst, 0);
if (n != 0 && (n * nmemb) / n != nmemb)
__builtin_trap();
if (n * nmemb > bos)
__builtin_trap();
return __fread_orig(dst, n, nmemb, fp);
}
extern size_t __fwrite_orig(const void *, size_t, size_t, FILE *)
__asm__(__USER_LABEL_PREFIX__ "fwrite");
extern __inline __attribute__((__always_inline__,__gnu_inline__,__artificial__))
size_t fwrite(const void *dst, size_t n, size_t nmemb, FILE *fp)
{
size_t bos = __builtin_object_size(dst, 0);
if (n != 0 && (n * nmemb) / n != nmemb)
__builtin_trap();
if (n * nmemb > bos)
__builtin_trap();
return __fwrite_orig(dst, n, nmemb, fp);
}
extern int __vsnprintf_orig(char *, size_t, const char *, __builtin_va_list)
__asm__(__USER_LABEL_PREFIX__ "vsnprintf");
extern __inline __attribute__((__always_inline__,__gnu_inline__,__artificial__))
int vsnprintf(char *s, size_t n, const char *fmt, __builtin_va_list ap)
{
size_t bos = __builtin_object_size(s, 0);
if (n > bos)
__builtin_trap();
return __vsnprintf_orig(s, n, fmt, ap);
}
extern int __vsprintf_orig(char *, const char *, __builtin_va_list)
__asm__(__USER_LABEL_PREFIX__ "vsprintf");
extern __inline __attribute__((__always_inline__,__gnu_inline__,__artificial__))
int vsprintf(char *s, const char *fmt, __builtin_va_list ap)
{
size_t bos = __builtin_object_size(s, 0);
int r;
if (bos != (size_t)-1) {
r = __vsnprintf_orig(s, bos, fmt, ap);
if (r != -1 && (size_t)r >= bos)
__builtin_trap();
} else {
r = __vsprintf_orig(s, fmt, ap);
}
return r;
}
extern int __snprintf_orig(char *, size_t, const char *, ...)
__asm__(__USER_LABEL_PREFIX__ "snprintf");
extern __inline __attribute__((__always_inline__,__gnu_inline__,__artificial__))
int snprintf(char *s, size_t n, const char *fmt, ...)
{
size_t bos = __builtin_object_size(s, 0);
if (n > bos)
__builtin_trap();
return __snprintf_orig(s, n, fmt, __builtin_va_arg_pack());
}
extern int __sprintf_orig(char *, const char *, ...)
__asm__(__USER_LABEL_PREFIX__ "sprintf");
extern __inline __attribute__((__always_inline__,__gnu_inline__,__artificial__))
int sprintf(char *s, const char *fmt, ...)
{
size_t bos = __builtin_object_size(s, 0);
int r;
if (bos != (size_t)-1) {
r = __snprintf_orig(s, bos, fmt, __builtin_va_arg_pack());
if (r != -1 && (size_t)r >= bos)
__builtin_trap();
} else {
r = __sprintf_orig(s, fmt, __builtin_va_arg_pack());
}
return r;
}
#ifdef __cplusplus
}
#endif
#endif
#endif
|
