diff options
Diffstat (limited to 'socket')
| -rw-r--r-- | socket/bits/socket2.h | 36 |
1 files changed, 29 insertions, 7 deletions
diff --git a/socket/bits/socket2.h b/socket/bits/socket2.h index 9fac75669c..5c4cb47a6d 100644 --- a/socket/bits/socket2.h +++ b/socket/bits/socket2.h @@ -25,13 +25,23 @@ extern ssize_t __recv_chk (int __fd, void *__buf, size_t __n, size_t __buflen, int __flags); extern ssize_t __REDIRECT (__recv_alias, (int __fd, void *__buf, size_t __n, int __flags), recv); +extern ssize_t __REDIRECT (__recv_chk_warn, + (int __fd, void *__buf, size_t __n, size_t __buflen, + int __flags), __recv_chk) + __warnattr ("recv called with bigger length than size of destination " + "buffer"); __extern_always_inline ssize_t recv (int __fd, void *__buf, size_t __n, int __flags) { - if (__bos0 (__buf) != (size_t) -1 - && (!__builtin_constant_p (__n) || __n > __bos0 (__buf))) - return __recv_chk (__fd, __buf, __n, __bos0 (__buf), __flags); + if (__bos0 (__buf) != (size_t) -1) + { + if (!__builtin_constant_p (__n)) + return __recv_chk (__fd, __buf, __n, __bos0 (__buf), __flags); + + if (__n > __bos0 (__buf)) + return __recv_chk_warn (__fd, __buf, __n, __bos0 (__buf), __flags); + } return __recv_alias (__fd, __buf, __n, __flags); } @@ -43,14 +53,26 @@ extern ssize_t __REDIRECT (__recvfrom_alias, (int __fd, void *__restrict __buf, size_t __n, int __flags, __SOCKADDR_ARG __addr, socklen_t *__restrict __addr_len), recvfrom); +extern ssize_t __REDIRECT (__recvfrom_chk_warn, + (int __fd, void *__restrict __buf, size_t __n, + size_t __buflen, int __flags, + __SOCKADDR_ARG __addr, + socklen_t *__restrict __addr_len), __recvfrom_chk) + __warnattr ("recvfrom called with bigger length than size of " + "destination buffer"); __extern_always_inline ssize_t recvfrom (int __fd, void *__restrict __buf, size_t __n, int __flags, __SOCKADDR_ARG __addr, socklen_t *__restrict __addr_len) { - if (__bos0 (__buf) != (size_t) -1 - && (!__builtin_constant_p (__n) || __n > __bos0 (__buf))) - return __recvfrom_chk (__fd, __buf, __n, __bos0 (__buf), __flags, - __addr, __addr_len); + if (__bos0 (__buf) != (size_t) -1) + { + if (!__builtin_constant_p (__n)) + return __recvfrom_chk (__fd, __buf, __n, __bos0 (__buf), __flags, + __addr, __addr_len); + if (__n > __bos0 (__buf)) + return __recvfrom_chk_warn (__fd, __buf, __n, __bos0 (__buf), __flags, + __addr, __addr_len); + } return __recvfrom_alias (__fd, __buf, __n, __flags, __addr, __addr_len); } |