lib/recv.c

   1 /* recv.c --- wrappers for Windows recv function
   2
   3    Copyright (C) 2008-2020 Free Software Foundation, Inc.
   4
   5    This program is free software: you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  17
  18 /* Written by Paolo Bonzini */
  19
  20 #include <config.h>
  21
  22 #define WIN32_LEAN_AND_MEAN
  23 /* Get winsock2.h. */
  24 #include <sys/socket.h>
  25
  26 /* Get set_winsock_errno, FD_TO_SOCKET etc. */
  27 #include "w32sock.h"
  28
  29 #undef recv
  30
  31 ssize_t
  32 rpl_recv (int fd, void *buf, size_t len, int flags)
  33 {
  34   SOCKET sock = FD_TO_SOCKET (fd);
  35
  36   if (sock == INVALID_SOCKET)
  37     {
  38       errno = EBADF;
  39       return -1;
  40     }
  41   else
  42     {
  43       int r = recv (sock, buf, len, flags);
  44       if (r < 0)
  45         set_winsock_errno ();
  46
  47       return r;
  48     }
  49 }