+
−/* recvfrom.c --- wrappers for Windows recvfrom function
+
−
+
−   Copyright (C) 2008 Free Software Foundation, Inc.
+
−
+
−   This program is free software: you can redistribute it and/or modify
+
−   it under the terms of the GNU General Public License as published by
+
−   the Free Software Foundation; either version 3 of the License, or
+
−   (at your option) any later version.
+
−
+
−   This program 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 General Public License for more details.
+
−
+
−   You should have received a copy of the GNU General Public License
+
−   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
−
+
−/* Written by Paolo Bonzini */
+
−
+
−#include <config.h>
+
−
+
−#define WIN32_LEAN_AND_MEAN
+
−/* Get winsock2.h. */
+
−#include <sys/socket.h>
+
−
+
−/* Get set_winsock_errno, FD_TO_SOCKET etc. */
+
−#include "w32sock.h"
+
−
+
−#undef recvfrom
+
−
+
−int
+
−rpl_recvfrom (int fd, void *buf, int len, int flags, struct sockaddr *from,
+
−	      int *fromlen)
+
−{
+
−  int frombufsize = *fromlen;
+
−  SOCKET sock = FD_TO_SOCKET (fd);
+
−  int r = recvfrom (sock, buf, len, flags, from, fromlen);
+
−
+
−  if (r < 0)
+
−    set_winsock_errno ();
+
−
+
−  /* Winsock recvfrom() only returns a valid 'from' when the socket is
+
−     connectionless.  POSIX gives a valid 'from' for all types of sockets.  */
+
−  else if (*fromlen == frombufsize)
+
−    rpl_getpeername (fd, from, fromlen);
+
−
+
−  return r;
+
−}