kc3-lang/gnulib/lib/recvfrom.c

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• Hash : d60f3b0c
  Author :
  Date : 2011-01-01T20:17:23
  

  maint: update almost all copyright ranges to include 2011
  
  Run the new "make update-copyright" rule.
  

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• lib/recvfrom.c

• /* recvfrom.c --- wrappers for Windows recvfrom function
  
     Copyright (C) 2008-2011 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
  
  ssize_t
  rpl_recvfrom (int fd, void *buf, size_t len, int flags, struct sockaddr *from,
                socklen_t *fromlen)
  {
    int frombufsize = (from != NULL ? *fromlen : 0);
    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 (from != NULL && *fromlen == frombufsize)
      rpl_getpeername (fd, from, fromlen);
  
    return r;
  }
  

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