1 /*
2 * Copyright (C) 2017 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the
13 * distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #ifndef _SYS_SOCKET_H_
30 #error "Never include this file directly; instead, include <sys/socket.h>"
31 #endif
32
33 extern ssize_t __sendto_chk(int, const void* _Nonnull, size_t, size_t, int, const struct sockaddr* _Nullable,
34 socklen_t) __INTRODUCED_IN(26);
35 ssize_t __recvfrom_chk(int, void* _Nullable, size_t, size_t, int, struct sockaddr* _Nullable, socklen_t* _Nullable);
36
37 #if defined(__BIONIC_FORTIFY)
38
39 __BIONIC_FORTIFY_INLINE
recvfrom(int fd,void * _Nullable const buf __pass_object_size0,size_t len,int flags,struct sockaddr * _Nullable src_addr,socklen_t * _Nullable addr_len)40 ssize_t recvfrom(int fd, void* _Nullable const buf __pass_object_size0, size_t len, int flags, struct sockaddr* _Nullable src_addr, socklen_t* _Nullable addr_len)
41 __overloadable
42 __clang_error_if(__bos_unevaluated_lt(__bos0(buf), len),
43 "'recvfrom' called with size bigger than buffer") {
44 #if __ANDROID_API__ >= 24 && __BIONIC_FORTIFY_RUNTIME_CHECKS_ENABLED
45 size_t bos = __bos0(buf);
46
47 if (!__bos_trivially_ge(bos, len)) {
48 return __recvfrom_chk(fd, buf, len, bos, flags, src_addr, addr_len);
49 }
50 #endif
51 return __call_bypassing_fortify(recvfrom)(fd, buf, len, flags, src_addr, addr_len);
52 }
53
54 __BIONIC_FORTIFY_INLINE
sendto(int fd,const void * _Nonnull const buf __pass_object_size0,size_t len,int flags,const struct sockaddr * _Nullable dest_addr,socklen_t addr_len)55 ssize_t sendto(int fd, const void* _Nonnull const buf __pass_object_size0, size_t len, int flags, const struct sockaddr* _Nullable dest_addr, socklen_t addr_len)
56 __overloadable
57 __clang_error_if(__bos_unevaluated_lt(__bos0(buf), len),
58 "'sendto' called with size bigger than buffer") {
59 #if __ANDROID_API__ >= 26 && __BIONIC_FORTIFY_RUNTIME_CHECKS_ENABLED
60 size_t bos = __bos0(buf);
61
62 if (!__bos_trivially_ge(bos, len)) {
63 return __sendto_chk(fd, buf, len, bos, flags, dest_addr, addr_len);
64 }
65 #endif
66 return __call_bypassing_fortify(sendto)(fd, buf, len, flags, dest_addr, addr_len);
67 }
68
69 __BIONIC_FORTIFY_INLINE
recv(int socket,void * _Nullable const buf __pass_object_size0,size_t len,int flags)70 ssize_t recv(int socket, void* _Nullable const buf __pass_object_size0, size_t len, int flags)
71 __overloadable
72 __clang_error_if(__bos_unevaluated_lt(__bos0(buf), len),
73 "'recv' called with size bigger than buffer") {
74 return recvfrom(socket, buf, len, flags, NULL, 0);
75 }
76
77 __BIONIC_FORTIFY_INLINE
send(int socket,const void * _Nonnull const buf __pass_object_size0,size_t len,int flags)78 ssize_t send(int socket, const void* _Nonnull const buf __pass_object_size0, size_t len, int flags)
79 __overloadable
80 __clang_error_if(__bos_unevaluated_lt(__bos0(buf), len),
81 "'send' called with size bigger than buffer") {
82 return sendto(socket, buf, len, flags, NULL, 0);
83 }
84
85 #endif /* __BIONIC_FORTIFY */
86