1 /* Checking macros for socket functions. 2 Copyright (C) 2005, 2007 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, 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
