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/* Checking macros for socket functions.
Copyright (C) 2005-2021 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
<https://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);
}