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Commit | Line | Data |
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1 | #ifndef BANNED_H | |
2 | #define BANNED_H | |
3 | ||
4 | /* | |
5 | * This header lists functions that have been banned from our code base, | |
6 | * because they're too easy to misuse (and even if used correctly, | |
7 | * complicate audits). Including this header turns them into compile-time | |
8 | * errors. | |
9 | */ | |
10 | ||
11 | #define BANNED(func) sorry_##func##_is_a_banned_function | |
12 | ||
13 | #undef strcpy | |
14 | #define strcpy(x,y) BANNED(strcpy) | |
15 | #undef strcat | |
16 | #define strcat(x,y) BANNED(strcat) | |
17 | #undef strncpy | |
18 | #define strncpy(x,y,n) BANNED(strncpy) | |
19 | #undef strncat | |
20 | #define strncat(x,y,n) BANNED(strncat) | |
21 | ||
22 | #undef sprintf | |
23 | #undef vsprintf | |
24 | #ifdef HAVE_VARIADIC_MACROS | |
25 | #define sprintf(...) BANNED(sprintf) | |
26 | #define vsprintf(...) BANNED(vsprintf) | |
27 | #else | |
28 | #define sprintf(buf,fmt,arg) BANNED(sprintf) | |
29 | #define vsprintf(buf,fmt,arg) BANNED(sprintf) | |
30 | #endif | |
31 | ||
32 | #endif /* BANNED_H */ |