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) 2001-2013, 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
38with Interfaces.C;
39
40with GNAT.Sockets.Thin_Common;
41
42with System;
43with System.CRTL;
44
45package GNAT.Sockets.Thin is
46
47   use Thin_Common;
48
49   package C renames Interfaces.C;
50
51   use type System.CRTL.ssize_t;
52
53   function Socket_Errno return Integer;
54   --  Returns last socket error number
55
56   procedure Set_Socket_Errno (Errno : Integer);
57   --  Set last socket error number
58
59   function Socket_Error_Message (Errno : Integer) return String;
60   --  Returns the error message string for the error number Errno. If Errno is
61   --  not known, returns "Unknown system error".
62
63   function Host_Errno return Integer;
64   pragma Import (C, Host_Errno, "__gnat_get_h_errno");
65   --  Returns last host error number
66
67   package Host_Error_Messages is
68
69      function Host_Error_Message (H_Errno : Integer) return String;
70      --  Returns the error message string for the host error number H_Errno.
71      --  If H_Errno is not known, returns "Unknown system error".
72
73   end Host_Error_Messages;
74
75   --------------------------------
76   -- Standard library functions --
77   --------------------------------
78
79   function C_Accept
80     (S       : C.int;
81      Addr    : System.Address;
82      Addrlen : not null access C.int) return C.int;
83
84   function C_Bind
85     (S       : C.int;
86      Name    : System.Address;
87      Namelen : C.int) return C.int;
88
89   function C_Close
90     (Fd : C.int) return C.int;
91
92   function C_Connect
93     (S       : C.int;
94      Name    : System.Address;
95      Namelen : C.int) return C.int;
96
97   function C_Gethostname
98     (Name    : System.Address;
99      Namelen : C.int) return C.int;
100
101   function C_Getpeername
102     (S       : C.int;
103      Name    : System.Address;
104      Namelen : not null access C.int) return C.int;
105
106   function C_Getsockname
107     (S       : C.int;
108      Name    : System.Address;
109      Namelen : not null access C.int) return C.int;
110
111   function C_Getsockopt
112     (S       : C.int;
113      Level   : C.int;
114      Optname : C.int;
115      Optval  : System.Address;
116      Optlen  : not null access C.int) return C.int;
117
118   function Socket_Ioctl
119     (S   : C.int;
120      Req : SOSC.IOCTL_Req_T;
121      Arg : access C.int) return C.int;
122
123   function C_Listen
124     (S       : C.int;
125      Backlog : C.int) return C.int;
126
127   function C_Recv
128     (S     : C.int;
129      Msg   : System.Address;
130      Len   : C.int;
131      Flags : C.int) return C.int;
132
133   function C_Recvfrom
134     (S       : C.int;
135      Msg     : System.Address;
136      Len     : C.int;
137      Flags   : C.int;
138      From    : System.Address;
139      Fromlen : not null access C.int) return C.int;
140
141   function C_Recvmsg
142     (S     : C.int;
143      Msg   : System.Address;
144      Flags : C.int) return System.CRTL.ssize_t;
145
146   function C_Select
147     (Nfds      : C.int;
148      Readfds   : access Fd_Set;
149      Writefds  : access Fd_Set;
150      Exceptfds : access Fd_Set;
151      Timeout   : Timeval_Access) return C.int;
152
153   function C_Sendmsg
154     (S     : C.int;
155      Msg   : System.Address;
156      Flags : C.int) return System.CRTL.ssize_t;
157
158   function C_Sendto
159     (S     : C.int;
160      Msg   : System.Address;
161      Len   : C.int;
162      Flags : C.int;
163      To    : System.Address;
164      Tolen : C.int) return C.int;
165
166   function C_Setsockopt
167     (S       : C.int;
168      Level   : C.int;
169      Optname : C.int;
170      Optval  : System.Address;
171      Optlen  : C.int) return C.int;
172
173   function C_Shutdown
174     (S   : C.int;
175      How : C.int) return C.int;
176
177   function C_Socket
178     (Domain   : C.int;
179      Typ      : C.int;
180      Protocol : C.int) return C.int;
181
182   function C_System
183     (Command : System.Address) return C.int;
184
185   function WSAStartup
186     (WS_Version     : Interfaces.C.unsigned_short;
187      WSADataAddress : System.Address) return Interfaces.C.int;
188
189   -------------------------------------------------------
190   -- Signalling file descriptors for selector abortion --
191   -------------------------------------------------------
192
193   package Signalling_Fds is
194
195      function Create (Fds : not null access Fd_Pair) return C.int;
196      pragma Convention (C, Create);
197      --  Create a pair of connected descriptors suitable for use with C_Select
198      --  (used for signalling in Selector objects).
199
200      function Read (Rsig : C.int) return C.int;
201      pragma Convention (C, Read);
202      --  Read one byte of data from rsig, the read end of a pair of signalling
203      --  fds created by Create_Signalling_Fds.
204
205      function Write (Wsig : C.int) return C.int;
206      pragma Convention (C, Write);
207      --  Write one byte of data to wsig, the write end of a pair of signalling
208      --  fds created by Create_Signalling_Fds.
209
210      procedure Close (Sig : C.int);
211      pragma Convention (C, Close);
212      --  Close one end of a pair of signalling fds (ignoring any error)
213
214   end Signalling_Fds;
215
216   procedure WSACleanup;
217
218   procedure Initialize;
219   procedure Finalize;
220
221private
222   pragma Import (Stdcall, C_Accept, "accept");
223   pragma Import (Stdcall, C_Bind, "bind");
224   pragma Import (Stdcall, C_Close, "closesocket");
225   pragma Import (Stdcall, C_Gethostname, "gethostname");
226   pragma Import (Stdcall, C_Getpeername, "getpeername");
227   pragma Import (Stdcall, C_Getsockname, "getsockname");
228   pragma Import (Stdcall, C_Getsockopt, "getsockopt");
229   pragma Import (Stdcall, C_Listen, "listen");
230   pragma Import (Stdcall, C_Recv, "recv");
231   pragma Import (Stdcall, C_Recvfrom, "recvfrom");
232   pragma Import (Stdcall, C_Sendto, "sendto");
233   pragma Import (Stdcall, C_Setsockopt, "setsockopt");
234   pragma Import (Stdcall, C_Shutdown, "shutdown");
235   pragma Import (Stdcall, C_Socket, "socket");
236   pragma Import (C, C_System, "_system");
237   pragma Import (Stdcall, Socket_Errno, "WSAGetLastError");
238   pragma Import (Stdcall, Set_Socket_Errno, "WSASetLastError");
239   pragma Import (Stdcall, WSAStartup, "WSAStartup");
240   pragma Import (Stdcall, WSACleanup, "WSACleanup");
241
242end GNAT.Sockets.Thin;
243