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1 : /* Checking macros for socket functions.
2 : Copyright (C) 2005-2018 Free Software Foundation, Inc.
3 : This file is part of the GNU C Library.
4 :
5 : The GNU C Library is free software; you can redistribute it and/or
6 : modify it under the terms of the GNU Lesser General Public
7 : License as published by the Free Software Foundation; either
8 : version 2.1 of the License, or (at your option) any later version.
9 :
10 : The GNU C Library is distributed in the hope that it will be useful,
11 : but WITHOUT ANY WARRANTY; without even the implied warranty of
12 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 : Lesser General Public License for more details.
14 :
15 : You should have received a copy of the GNU Lesser General Public
16 : License along with the GNU C Library; if not, see
17 : <http://www.gnu.org/licenses/>. */
18 :
19 : #ifndef _SYS_SOCKET_H
20 : # error "Never include <bits/socket2.h> directly; use <sys/socket.h> instead."
21 : #endif
22 :
23 : extern ssize_t __recv_chk (int __fd, void *__buf, size_t __n, size_t __buflen,
24 : int __flags);
25 : extern ssize_t __REDIRECT (__recv_alias, (int __fd, void *__buf, size_t __n,
26 : int __flags), recv);
27 : extern ssize_t __REDIRECT (__recv_chk_warn,
28 : (int __fd, void *__buf, size_t __n, size_t __buflen,
29 : int __flags), __recv_chk)
30 : __warnattr ("recv called with bigger length than size of destination "
31 : "buffer");
32 :
33 : __fortify_function ssize_t
34 44817 : recv (int __fd, void *__buf, size_t __n, int __flags)
35 : {
36 44749 : if (__bos0 (__buf) != (size_t) -1)
37 : {
38 0 : if (!__builtin_constant_p (__n))
39 0 : return __recv_chk (__fd, __buf, __n, __bos0 (__buf), __flags);
40 :
41 0 : if (__n > __bos0 (__buf))
42 0 : return __recv_chk_warn (__fd, __buf, __n, __bos0 (__buf), __flags);
43 : }
44 44749 : return __recv_alias (__fd, __buf, __n, __flags);
45 : }
46 :
47 : extern ssize_t __recvfrom_chk (int __fd, void *__restrict __buf, size_t __n,
48 : size_t __buflen, int __flags,
49 : __SOCKADDR_ARG __addr,
50 : socklen_t *__restrict __addr_len);
51 : extern ssize_t __REDIRECT (__recvfrom_alias,
52 : (int __fd, void *__restrict __buf, size_t __n,
53 : int __flags, __SOCKADDR_ARG __addr,
54 : socklen_t *__restrict __addr_len), recvfrom);
55 : extern ssize_t __REDIRECT (__recvfrom_chk_warn,
56 : (int __fd, void *__restrict __buf, size_t __n,
57 : size_t __buflen, int __flags,
58 : __SOCKADDR_ARG __addr,
59 : socklen_t *__restrict __addr_len), __recvfrom_chk)
60 : __warnattr ("recvfrom called with bigger length than size of "
61 : "destination buffer");
62 :
63 : __fortify_function ssize_t
64 1006 : recvfrom (int __fd, void *__restrict __buf, size_t __n, int __flags,
65 : __SOCKADDR_ARG __addr, socklen_t *__restrict __addr_len)
66 : {
67 870 : if (__bos0 (__buf) != (size_t) -1)
68 : {
69 0 : if (!__builtin_constant_p (__n))
70 0 : return __recvfrom_chk (__fd, __buf, __n, __bos0 (__buf), __flags,
71 : __addr, __addr_len);
72 0 : if (__n > __bos0 (__buf))
73 0 : return __recvfrom_chk_warn (__fd, __buf, __n, __bos0 (__buf), __flags,
74 : __addr, __addr_len);
75 : }
76 870 : return __recvfrom_alias (__fd, __buf, __n, __flags, __addr, __addr_len);
77 : }
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