glibc/debug/recvfrom_chk.c

/* Copyright (C) 2005-2020 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/>.  */

#include <sys/param.h>
#include <sys/socket.h>


ssize_t
__recvfrom_chk (int fd, void *buf, size_t n, size_t buflen, int flags,
		__SOCKADDR_ARG addr, socklen_t *addr_len)
{
  if (n > buflen)
    __chk_fail ();

  return __recvfrom (fd, buf, n, flags, addr, addr_len);
}