| Damien Miller | 703b98a | 2014-10-01 09:43:07 +1000 | [diff] [blame] | 1 | /* Placed in the public domain. */ |
| 2 | |
| 3 | /* |
| 4 | * _FORTIFY_SOURCE includes a misguided check for FD_SET(n)/FD_ISSET(b) |
| 5 | * where n > FD_SETSIZE. This breaks OpenSSH and other programs that |
| 6 | * explicitly allocate fd_sets. To avoid this, we wrap FD_SET in a |
| 7 | * function compiled without _FORTIFY_SOURCE. |
| 8 | */ |
| 9 | |
| 10 | #include "config.h" |
| 11 | |
| 12 | #if defined(HAVE_FEATURES_H) && defined(_FORTIFY_SOURCE) |
| 13 | # include <features.h> |
| 14 | # if defined(__GNU_LIBRARY__) && defined(__GLIBC_PREREQ) |
| 15 | # if __GLIBC_PREREQ(2, 15) && (_FORTIFY_SOURCE > 0) |
| 16 | # undef _FORTIFY_SOURCE |
| 17 | # undef __USE_FORTIFY_LEVEL |
| 18 | # include <sys/socket.h> |
| 19 | void kludge_FD_SET(int n, fd_set *set) { |
| 20 | FD_SET(n, set); |
| 21 | } |
| 22 | int kludge_FD_ISSET(int n, fd_set *set) { |
| 23 | return FD_ISSET(n, set); |
| 24 | } |
| 25 | # endif /* __GLIBC_PREREQ(2, 15) && (_FORTIFY_SOURCE > 0) */ |
| 26 | # endif /* __GNU_LIBRARY__ && __GLIBC_PREREQ */ |
| 27 | #endif /* HAVE_FEATURES_H && _FORTIFY_SOURCE */ |
| 28 | |