---

---

---

01: /* Checking macros for socket functions.
02:    Copyright (C) 2005, 2007 Free Software Foundation, Inc.
03:    This file is part of the GNU C Library.
04: 
05:    The GNU C Library is free software; you can redistribute it and/or
06:    modify it under the terms of the GNU Lesser General Public
07:    License as published by the Free Software Foundation; either
08:    version 2.1 of the License, or (at your option) any later version.
09: 
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, write to the Free
17:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18:    02111-1307 USA.  */
19: 
20: #ifndef _SYS_SOCKET_H
21: # error "Never include <bits/socket2.h> directly; use <sys/socket.h> instead."
22: #endif
23: 
24: extern ssize_t __recv_chk (int __fd, void *__buf, size_t __n, size_t __buflen,
25:                            int __flags);
26: extern ssize_t __REDIRECT (__recv_alias, (int __fd, void *__buf, size_t __n,
27:                                           int __flags), recv);
28: extern ssize_t __REDIRECT (__recv_chk_warn,
29:                            (int __fd, void *__buf, size_t __n, size_t __buflen,
30:                             int __flags), __recv_chk)
31:      __warnattr ("recv called with bigger length than size of destination "
32:                  "buffer");
33: 
34: __extern_always_inline ssize_t
35: recv (int __fd, void *__buf, size_t __n, int __flags)
36: {
37:   if (__bos0 (__buf) != (size_t) -1)
38:     {
39:       if (!__builtin_constant_p (__n))
40:         return __recv_chk (__fd, __buf, __n, __bos0 (__buf), __flags);
41: 
42:       if (__n > __bos0 (__buf))
43:         return __recv_chk_warn (__fd, __buf, __n, __bos0 (__buf), __flags);
44:     }
45:   return __recv_alias (__fd, __buf, __n, __flags);
46: }
47: 
48: extern ssize_t __recvfrom_chk (int __fd, void *__restrict __buf, size_t __n,
49:                                size_t __buflen, int __flags,
50:                                __SOCKADDR_ARG __addr,
51:                                socklen_t *__restrict __addr_len);
52: extern ssize_t __REDIRECT (__recvfrom_alias,
53:                            (int __fd, void *__restrict __buf, size_t __n,
54:                             int __flags, __SOCKADDR_ARG __addr,
55:                             socklen_t *__restrict __addr_len), recvfrom);
56: extern ssize_t __REDIRECT (__recvfrom_chk_warn,
57:                            (int __fd, void *__restrict __buf, size_t __n,
58:                             size_t __buflen, int __flags,
59:                             __SOCKADDR_ARG __addr,
60:                             socklen_t *__restrict __addr_len), __recvfrom_chk)
61:      __warnattr ("recvfrom called with bigger length than size of "
62:                  "destination buffer");
63: 
64: __extern_always_inline ssize_t
65: recvfrom (int __fd, void *__restrict __buf, size_t __n, int __flags,
66:           __SOCKADDR_ARG __addr, socklen_t *__restrict __addr_len)
67: {
68:   if (__bos0 (__buf) != (size_t) -1)
69:     {
70:       if (!__builtin_constant_p (__n))
71:         return __recvfrom_chk (__fd, __buf, __n, __bos0 (__buf), __flags,
72:                                __addr, __addr_len);
73:       if (__n > __bos0 (__buf))
74:         return __recvfrom_chk_warn (__fd, __buf, __n, __bos0 (__buf), __flags,
75:                                     __addr, __addr_len);
76:     }
77:   return __recvfrom_alias (__fd, __buf, __n, __flags, __addr, __addr_len);
78: }
79: 

---

---

---