72 lines
3.0 KiB
C
72 lines
3.0 KiB
C
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/* Checking macros for socket functions.
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Copyright (C) 2005-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _SYS_SOCKET_H
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# error "Never include <bits/socket2.h> directly; use <sys/socket.h> instead."
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#endif
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extern ssize_t __recv_chk (int __fd, void *__buf, size_t __n, size_t __buflen,
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int __flags);
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extern ssize_t __REDIRECT (__recv_alias, (int __fd, void *__buf, size_t __n,
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int __flags), recv);
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extern ssize_t __REDIRECT (__recv_chk_warn,
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(int __fd, void *__buf, size_t __n, size_t __buflen,
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int __flags), __recv_chk)
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__warnattr ("recv called with bigger length than size of destination "
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"buffer");
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__fortify_function ssize_t
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recv (int __fd, void *__buf, size_t __n, int __flags)
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{
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size_t sz = __glibc_objsize0 (__buf);
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if (__glibc_safe_or_unknown_len (__n, sizeof (char), sz))
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return __recv_alias (__fd, __buf, __n, __flags);
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if (__glibc_unsafe_len (__n, sizeof (char), sz))
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return __recv_chk_warn (__fd, __buf, __n, sz, __flags);
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return __recv_chk (__fd, __buf, __n, sz, __flags);
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}
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extern ssize_t __recvfrom_chk (int __fd, void *__restrict __buf, size_t __n,
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size_t __buflen, int __flags,
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__SOCKADDR_ARG __addr,
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socklen_t *__restrict __addr_len);
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extern ssize_t __REDIRECT (__recvfrom_alias,
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(int __fd, void *__restrict __buf, size_t __n,
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int __flags, __SOCKADDR_ARG __addr,
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socklen_t *__restrict __addr_len), recvfrom);
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extern ssize_t __REDIRECT (__recvfrom_chk_warn,
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(int __fd, void *__restrict __buf, size_t __n,
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size_t __buflen, int __flags,
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__SOCKADDR_ARG __addr,
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socklen_t *__restrict __addr_len), __recvfrom_chk)
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__warnattr ("recvfrom called with bigger length than size of "
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"destination buffer");
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__fortify_function ssize_t
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recvfrom (int __fd, void *__restrict __buf, size_t __n, int __flags,
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__SOCKADDR_ARG __addr, socklen_t *__restrict __addr_len)
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{
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size_t sz = __glibc_objsize0 (__buf);
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if (__glibc_safe_or_unknown_len (__n, sizeof (char), sz))
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return __recvfrom_alias (__fd, __buf, __n, __flags, __addr, __addr_len);
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if (__glibc_unsafe_len (__n, sizeof (char), sz))
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return __recvfrom_chk_warn (__fd, __buf, __n, sz, __flags, __addr,
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__addr_len);
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return __recvfrom_chk (__fd, __buf, __n, sz, __flags, __addr, __addr_len);
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}
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