Edit: socket2.h
/* Checking macros for socket functions. Copyright (C) 2005-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ #ifndef _SYS_SOCKET_H # error "Never include <bits/socket2.h> directly; use <sys/socket.h> instead." #endif extern ssize_t __recv_chk (int __fd, void *__buf, size_t __n, size_t __buflen, int __flags); extern ssize_t __REDIRECT (__recv_alias, (int __fd, void *__buf, size_t __n, int __flags), recv); extern ssize_t __REDIRECT (__recv_chk_warn, (int __fd, void *__buf, size_t __n, size_t __buflen, int __flags), __recv_chk) __warnattr ("recv called with bigger length than size of destination " "buffer"); __fortify_function ssize_t recv (int __fd, void *__buf, size_t __n, int __flags) { size_t sz = __glibc_objsize0 (__buf); if (__glibc_safe_or_unknown_len (__n, sizeof (char), sz)) return __recv_alias (__fd, __buf, __n, __flags); if (__glibc_unsafe_len (__n, sizeof (char), sz)) return __recv_chk_warn (__fd, __buf, __n, sz, __flags); return __recv_chk (__fd, __buf, __n, sz, __flags); } extern ssize_t __recvfrom_chk (int __fd, void *__restrict __buf, size_t __n, size_t __buflen, int __flags, __SOCKADDR_ARG __addr, socklen_t *__restrict __addr_len); extern ssize_t __REDIRECT (__recvfrom_alias, (int __fd, void *__restrict __buf, size_t __n, int __flags, __SOCKADDR_ARG __addr, socklen_t *__restrict __addr_len), recvfrom); extern ssize_t __REDIRECT (__recvfrom_chk_warn, (int __fd, void *__restrict __buf, size_t __n, size_t __buflen, int __flags, __SOCKADDR_ARG __addr, socklen_t *__restrict __addr_len), __recvfrom_chk) __warnattr ("recvfrom called with bigger length than size of " "destination buffer"); __fortify_function ssize_t recvfrom (int __fd, void *__restrict __buf, size_t __n, int __flags, __SOCKADDR_ARG __addr, socklen_t *__restrict __addr_len) { size_t sz = __glibc_objsize0 (__buf); if (__glibc_safe_or_unknown_len (__n, sizeof (char), sz)) return __recvfrom_alias (__fd, __buf, __n, __flags, __addr, __addr_len); if (__glibc_unsafe_len (__n, sizeof (char), sz)) return __recvfrom_chk_warn (__fd, __buf, __n, sz, __flags, __addr, __addr_len); return __recvfrom_chk (__fd, __buf, __n, sz, __flags, __addr, __addr_len); }
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