gcc/ada/libgnat/g-socthi__mingw.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                    G N A T . S O C K E T S . T H I N                     --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --                     Copyright (C) 2001-2020, AdaCore                     --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 3,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
  17 --                                                                          --
  18 -- As a special exception under Section 7 of GPL version 3, you are granted --
  19 -- additional permissions described in the GCC Runtime Library Exception,   --
  20 -- version 3.1, as published by the Free Software Foundation.               --
  21 --                                                                          --
  22 -- You should have received a copy of the GNU General Public License and    --
  23 -- a copy of the GCC Runtime Library Exception along with this program;     --
  24 -- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
  25 -- <http://www.gnu.org/licenses/>.                                          --
  26 --                                                                          --
  27 -- GNAT was originally developed  by the GNAT team at  New York University. --
  28 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  29 --                                                                          --
  30 ------------------------------------------------------------------------------
  31
  32 --  This package provides a target dependent thin interface to the sockets
  33 --  layer for use by the GNAT.Sockets package (g-socket.ads). This package
  34 --  should not be directly with'ed by an applications program.
  35
  36 --  This version is for NT
  37
  38 with Interfaces.C;
  39
  40 with GNAT.Sockets.Thin_Common;
  41
  42 with System;
  43 with System.CRTL;
  44
  45 package GNAT.Sockets.Thin is
  46
  47    use Thin_Common;
  48
  49    package C renames Interfaces.C;
  50
  51    function Socket_Errno return Integer;
  52    --  Returns last socket error number
  53
  54    procedure Set_Socket_Errno (Errno : Integer);
  55    --  Set last socket error number
  56
  57    function Socket_Error_Message (Errno : Integer) return String;
  58    --  Returns the error message string for the error number Errno. If Errno is
  59    --  not known, returns "Unknown system error".
  60
  61    function Host_Errno return Integer;
  62    pragma Import (C, Host_Errno, "__gnat_get_h_errno");
  63    --  Returns last host error number
  64
  65    package Host_Error_Messages is
  66
  67       function Host_Error_Message (H_Errno : Integer) return String;
  68       --  Returns the error message string for the host error number H_Errno.
  69       --  If H_Errno is not known, returns "Unknown system error".
  70
  71    end Host_Error_Messages;
  72
  73    --------------------------------
  74    -- Standard library functions --
  75    --------------------------------
  76
  77    function C_Accept
  78      (S       : C.int;
  79       Addr    : System.Address;
  80       Addrlen : not null access C.int) return C.int;
  81
  82    function C_Bind
  83      (S       : C.int;
  84       Name    : System.Address;
  85       Namelen : C.int) return C.int;
  86
  87    function C_Close
  88      (Fd : C.int) return C.int;
  89
  90    function C_Connect
  91      (S       : C.int;
  92       Name    : System.Address;
  93       Namelen : C.int) return C.int;
  94
  95    function C_Gethostname
  96      (Name    : System.Address;
  97       Namelen : C.int) return C.int;
  98
  99    function C_Getpeername
 100      (S       : C.int;
 101       Name    : System.Address;
 102       Namelen : not null access C.int) return C.int;
 103
 104    function C_Getsockname
 105      (S       : C.int;
 106       Name    : System.Address;
 107       Namelen : not null access C.int) return C.int;
 108
 109    function C_Getsockopt
 110      (S       : C.int;
 111       Level   : C.int;
 112       Optname : C.int;
 113       Optval  : System.Address;
 114       Optlen  : not null access C.int) return C.int;
 115
 116    function Socket_Ioctl
 117      (S   : C.int;
 118       Req : SOSC.IOCTL_Req_T;
 119       Arg : access C.int) return C.int;
 120
 121    function C_Listen
 122      (S       : C.int;
 123       Backlog : C.int) return C.int;
 124
 125    function C_Recv
 126      (S     : C.int;
 127       Msg   : System.Address;
 128       Len   : C.int;
 129       Flags : C.int) return C.int;
 130
 131    function C_Recvfrom
 132      (S       : C.int;
 133       Msg     : System.Address;
 134       Len     : C.int;
 135       Flags   : C.int;
 136       From    : System.Address;
 137       Fromlen : not null access C.int) return C.int;
 138
 139    function C_Recvmsg
 140      (S     : C.int;
 141       Msg   : System.Address;
 142       Flags : C.int) return System.CRTL.ssize_t;
 143
 144    function C_Select
 145      (Nfds      : C.int;
 146       Readfds   : access Fd_Set;
 147       Writefds  : access Fd_Set;
 148       Exceptfds : access Fd_Set;
 149       Timeout   : Timeval_Access) return C.int;
 150
 151    function C_Sendmsg
 152      (S     : C.int;
 153       Msg   : System.Address;
 154       Flags : C.int) return System.CRTL.ssize_t;
 155
 156    function C_Sendto
 157      (S     : C.int;
 158       Msg   : System.Address;
 159       Len   : C.int;
 160       Flags : C.int;
 161       To    : System.Address;
 162       Tolen : C.int) return C.int;
 163
 164    function C_Setsockopt
 165      (S       : C.int;
 166       Level   : C.int;
 167       Optname : C.int;
 168       Optval  : System.Address;
 169       Optlen  : C.int) return C.int;
 170
 171    function C_Shutdown
 172      (S   : C.int;
 173       How : C.int) return C.int;
 174
 175    function C_Socket
 176      (Domain   : C.int;
 177       Typ      : C.int;
 178       Protocol : C.int) return C.int;
 179
 180    Default_Socket_Pair_Family : constant := SOSC.AF_INET;
 181    --  Windows has not socketpair system call, and C_Socketpair below is
 182    --  implemented on loopback connected network sockets.
 183
 184    function C_Socketpair
 185      (Domain   : C.int;
 186       Typ      : C.int;
 187       Protocol : C.int;
 188       Fds      : not null access Fd_Pair) return C.int;
 189    --  Creates pair of connected sockets
 190
 191    function C_System
 192      (Command : System.Address) return C.int;
 193
 194    function WSAStartup
 195      (WS_Version     : Interfaces.C.unsigned_short;
 196       WSADataAddress : System.Address) return Interfaces.C.int;
 197
 198    -------------------------------------------------------
 199    -- Signalling file descriptors for selector abortion --
 200    -------------------------------------------------------
 201
 202    package Signalling_Fds is
 203
 204       function Create (Fds : not null access Fd_Pair) return C.int;
 205       pragma Convention (C, Create);
 206       --  Create a pair of connected descriptors suitable for use with C_Select
 207       --  (used for signalling in Selector objects).
 208
 209       function Read (Rsig : C.int) return C.int;
 210       pragma Convention (C, Read);
 211       --  Read one byte of data from rsig, the read end of a pair of signalling
 212       --  fds created by Create_Signalling_Fds.
 213
 214       function Write (Wsig : C.int) return C.int;
 215       pragma Convention (C, Write);
 216       --  Write one byte of data to wsig, the write end of a pair of signalling
 217       --  fds created by Create_Signalling_Fds.
 218
 219       procedure Close (Sig : C.int);
 220       pragma Convention (C, Close);
 221       --  Close one end of a pair of signalling fds (ignoring any error)
 222
 223    end Signalling_Fds;
 224
 225    procedure WSACleanup;
 226
 227    procedure Initialize;
 228    procedure Finalize;
 229
 230 private
 231    pragma Import (Stdcall, C_Accept, "accept");
 232    pragma Import (Stdcall, C_Bind, "bind");
 233    pragma Import (Stdcall, C_Close, "closesocket");
 234    pragma Import (Stdcall, C_Gethostname, "gethostname");
 235    pragma Import (Stdcall, C_Getpeername, "getpeername");
 236    pragma Import (Stdcall, C_Getsockname, "getsockname");
 237    pragma Import (Stdcall, C_Getsockopt, "getsockopt");
 238    pragma Import (Stdcall, C_Listen, "listen");
 239    pragma Import (Stdcall, C_Recv, "recv");
 240    pragma Import (Stdcall, C_Recvfrom, "recvfrom");
 241    pragma Import (Stdcall, C_Sendto, "sendto");
 242    pragma Import (Stdcall, C_Setsockopt, "setsockopt");
 243    pragma Import (Stdcall, C_Shutdown, "shutdown");
 244    pragma Import (Stdcall, C_Socket, "socket");
 245    pragma Import (C, C_System, "_system");
 246    pragma Import (Stdcall, Socket_Errno, "WSAGetLastError");
 247    pragma Import (Stdcall, Set_Socket_Errno, "WSASetLastError");
 248    pragma Import (Stdcall, WSAStartup, "WSAStartup");
 249    pragma Import (Stdcall, WSACleanup, "WSACleanup");
 250
 251 end GNAT.Sockets.Thin;