fortify-headers

standalone fortify-source implementation
git clone git://git.2f30.org/fortify-headers
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socket.h (2484B)

      1 /*
      2  * Copyright (C) 2015-2016 Dimitris Papastamos <sin@2f30.org>
      3  * Copyright (C) 2022 q66 <q66@chimera-linux.org>
      4  *
      5  * Permission to use, copy, modify, and/or distribute this software for any
      6  * purpose with or without fee is hereby granted.
      7  *
      8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
      9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     15  */
     16 
     17 #ifndef _FORTIFY_SYS_SOCKET_H
     18 #define _FORTIFY_SYS_SOCKET_H
     19 
     20 #if !defined(__cplusplus) && !defined(__clang__)
     21 __extension__
     22 #endif
     23 #include_next <sys/socket.h>
     24 
     25 #if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
     26 #include "../fortify-headers.h"
     27 
     28 #ifdef __cplusplus
     29 extern "C" {
     30 #endif
     31 
     32 #undef recv
     33 #undef recvfrom
     34 #undef send
     35 #undef sendto
     36 
     37 __fh_access(write_only, 2, 3)
     38 _FORTIFY_FN(recv) ssize_t recv(int __f, void * _FORTIFY_POS0 __s, size_t __n,
     39                                int __fl)
     40 {
     41 	__fh_size_t __b = __fh_bos(__s, 0);
     42 
     43 	if (__n > __b)
     44 		__builtin_trap();
     45 	return __orig_recv(__f, __s, __n, __fl);
     46 }
     47 
     48 __fh_access(write_only, 2, 3)
     49 _FORTIFY_FN(recvfrom) ssize_t recvfrom(int __f, void * _FORTIFY_POS0 __s,
     50                                        size_t __n, int __fl,
     51                                        struct sockaddr *__a, socklen_t *__l)
     52 {
     53 	__fh_size_t __b = __fh_bos(__s, 0);
     54 
     55 	if (__n > __b)
     56 		__builtin_trap();
     57 	return __orig_recvfrom(__f, __s, __n, __fl, __a, __l);
     58 }
     59 
     60 __fh_access(read_only, 2, 3)
     61 _FORTIFY_FN(send) ssize_t send(int __f, const void * _FORTIFY_POS0 __s,
     62                                size_t __n, int __fl)
     63 {
     64 	__fh_size_t __b = __fh_bos(__s, 0);
     65 
     66 	if (__n > __b)
     67 		__builtin_trap();
     68 	return __orig_send(__f, __s, __n, __fl);
     69 }
     70 
     71 __fh_access(read_only, 2, 3)
     72 _FORTIFY_FN(sendto) ssize_t sendto(int __f, const void * _FORTIFY_POS0 __s,
     73                                    size_t __n, int __fl,
     74                                    const struct sockaddr *__a, socklen_t __l)
     75 {
     76 	__fh_size_t __b = __fh_bos(__s, 0);
     77 
     78 	if (__n > __b)
     79 		__builtin_trap();
     80 	return __orig_sendto(__f, __s, __n, __fl, __a, __l);
     81 }
     82 
     83 #ifdef __cplusplus
     84 }
     85 #endif
     86 
     87 #endif
     88 
     89 #endif