lib/sockets.h

   1 /* sockets.h - wrappers for Windows socket functions
   2
   3    Copyright (C) 2008-2024 Free Software Foundation, Inc.
   4
   5    This file is free software: you can redistribute it and/or modify
   6    it under the terms of the GNU Lesser General Public License as
   7    published by the Free Software Foundation; either version 2.1 of the
   8    License, or (at your option) any later version.
   9
  10    This file 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 <https://www.gnu.org/licenses/>.  */
  17
  18 /* Written by Simon Josefsson */
  19
  20 #ifndef SOCKETS_H
  21 #define SOCKETS_H 1
  22
  23 /* This file uses _GL_ATTRIBUTE_CONST.  */
  24 #if !_GL_CONFIG_H_INCLUDED
  25  #error "Please include config.h first."
  26 #endif
  27
  28 #define SOCKETS_1_0 0x0001
  29 #define SOCKETS_1_1 0x0101
  30 #define SOCKETS_2_0 0x0002
  31 #define SOCKETS_2_1 0x0102
  32 #define SOCKETS_2_2 0x0202
  33
  34 int gl_sockets_startup (int version)
  35 #ifndef WINDOWS_SOCKETS
  36   _GL_ATTRIBUTE_CONST
  37 #endif
  38   ;
  39
  40 int gl_sockets_cleanup (void)
  41 #ifndef WINDOWS_SOCKETS
  42   _GL_ATTRIBUTE_CONST
  43 #endif
  44   ;
  45
  46 /* This function is useful it you create a socket using gnulib's
  47    Winsock wrappers but needs to pass on the socket handle to some
  48    other library that only accepts sockets. */
  49 #ifdef WINDOWS_SOCKETS
  50
  51 # include <sys/socket.h>
  52
  53 # if GNULIB_MSVC_NOTHROW
  54 #  include "msvc-nothrow.h"
  55 # else
  56 #  include <io.h>
  57 # endif
  58
  59 static inline SOCKET
  60 gl_fd_to_handle (int fd)
  61 {
  62   return _get_osfhandle (fd);
  63 }
  64
  65 #else
  66
  67 # define gl_fd_to_handle(x) (x)
  68
  69 #endif /* WINDOWS_SOCKETS */
  70
  71 #endif /* SOCKETS_H */