lib/w32sock.h

   1 /* w32sock.h --- internal auxilliary functions for Windows socket functions
   2
   3    Copyright (C) 2008-2011 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 Lesser 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 Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 /* Written by Paolo Bonzini */
  19
  20 #include <errno.h>
  21
  22 /* Get O_RDWR and O_BINARY.  */
  23 #include <fcntl.h>
  24
  25 /* Get _get_osfhandle() and _open_osfhandle().  */
  26 #include <io.h>
  27
  28 #define FD_TO_SOCKET(fd)   ((SOCKET) _get_osfhandle ((fd)))
  29 #define SOCKET_TO_FD(fh)   (_open_osfhandle ((long) (fh), O_RDWR | O_BINARY))
  30
  31 static inline void
  32 set_winsock_errno (void)
  33 {
  34   int err = WSAGetLastError ();
  35
  36   /* Map some WSAE* errors to the runtime library's error codes.  */
  37   switch (err)
  38     {
  39     case WSA_INVALID_HANDLE:
  40       errno = EBADF;
  41       break;
  42     case WSA_NOT_ENOUGH_MEMORY:
  43       errno = ENOMEM;
  44       break;
  45     case WSA_INVALID_PARAMETER:
  46       errno = EINVAL;
  47       break;
  48     case WSAEWOULDBLOCK:
  49       errno = EWOULDBLOCK;
  50       break;
  51     case WSAENAMETOOLONG:
  52       errno = ENAMETOOLONG;
  53       break;
  54     case WSAENOTEMPTY:
  55       errno = ENOTEMPTY;
  56       break;
  57     default:
  58       errno = (err > 10000 && err < 10025) ? err - 10000 : err;
  59       break;
  60     }
  61 }