1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
5 -- G N A T . S O C K E T S . T H I N --
9 -- Copyright (C) 2001-2008, AdaCore --
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 2, 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. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
20 -- Boston, MA 02110-1301, USA. --
22 -- As a special exception, if other files instantiate generics from this --
23 -- unit, or you link this unit with other files to produce an executable, --
24 -- this unit does not by itself cause the resulting executable to be --
25 -- covered by the GNU General Public License. This exception does not --
26 -- however invalidate any other reasons why the executable file might be --
27 -- covered by the GNU Public License. --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
34 -- This package provides a target dependent thin interface to the sockets
35 -- layer for use by the GNAT.Sockets package (g-socket.ads). This package
36 -- should not be directly with'ed by an applications program.
38 -- This version is for NT
40 with Interfaces.C.Strings;
42 with GNAT.Sockets.Thin_Common;
46 package GNAT.Sockets.Thin is
50 package C renames Interfaces.C;
52 function Socket_Errno return Integer;
53 -- Returns last socket error number
55 procedure Set_Socket_Errno (Errno : Integer);
56 -- Set last socket error number
58 function Socket_Error_Message (Errno : Integer) return C.Strings.chars_ptr;
59 -- Returns the error message string for the error number Errno. If Errno is
60 -- not known, returns "Unknown system error".
62 function Host_Errno return Integer;
63 pragma Import (C, Host_Errno, "__gnat_get_h_errno");
64 -- Returns last host error number
66 package Host_Error_Messages is
68 function Host_Error_Message
69 (H_Errno : Integer) return C.Strings.chars_ptr;
70 -- Returns the error message string for the host error number H_Errno.
71 -- If H_Errno is not known, returns "Unknown system error".
73 end Host_Error_Messages;
75 --------------------------------
76 -- Standard library functions --
77 --------------------------------
81 Addr : System.Address;
82 Addrlen : not null access C.int) return C.int;
86 Name : System.Address;
87 Namelen : C.int) return C.int;
90 (Fd : C.int) return C.int;
94 Name : System.Address;
95 Namelen : C.int) return C.int;
97 function C_Gethostname
98 (Name : System.Address;
99 Namelen : C.int) return C.int;
101 function C_Getpeername
103 Name : System.Address;
104 Namelen : not null access C.int) return C.int;
106 function C_Getsockname
108 Name : System.Address;
109 Namelen : not null access C.int) return C.int;
111 function C_Getsockopt
115 Optval : System.Address;
116 Optlen : not null access C.int) return C.int;
121 Arg : access C.int) return C.int;
125 Backlog : C.int) return C.int;
129 Iov : System.Address;
130 Iovcnt : C.int) return C.int;
134 Msg : System.Address;
136 Flags : C.int) return C.int;
140 Msg : System.Address;
143 From : Sockaddr_In_Access;
144 Fromlen : not null access C.int) return C.int;
148 Readfds : access Fd_Set;
149 Writefds : access Fd_Set;
150 Exceptfds : access Fd_Set;
151 Timeout : Timeval_Access) return C.int;
155 Msg : System.Address;
158 To : Sockaddr_In_Access;
159 Tolen : C.int) return C.int;
161 function C_Setsockopt
165 Optval : System.Address;
166 Optlen : C.int) return C.int;
170 How : C.int) return C.int;
175 Protocol : C.int) return C.int;
178 (Errnum : C.int) return C.Strings.chars_ptr;
181 (Command : System.Address) return C.int;
185 Iov : System.Address;
186 Iovcnt : C.int) return C.int;
189 (WS_Version : Interfaces.C.int;
190 WSADataAddress : System.Address) return Interfaces.C.int;
192 -------------------------------------------------------
193 -- Signalling file descriptors for selector abortion --
194 -------------------------------------------------------
196 package Signalling_Fds is
198 function Create (Fds : not null access Fd_Pair) return C.int;
199 pragma Convention (C, Create);
200 -- Create a pair of connected descriptors suitable for use with C_Select
201 -- (used for signalling in Selector objects).
203 function Read (Rsig : C.int) return C.int;
204 pragma Convention (C, Read);
205 -- Read one byte of data from rsig, the read end of a pair of signalling
206 -- fds created by Create_Signalling_Fds.
208 function Write (Wsig : C.int) return C.int;
209 pragma Convention (C, Write);
210 -- Write one byte of data to wsig, the write end of a pair of signalling
211 -- fds created by Create_Signalling_Fds.
213 procedure Close (Sig : C.int);
214 pragma Convention (C, Close);
215 -- Close one end of a pair of signalling fds (ignoring any error)
219 procedure WSACleanup;
221 procedure Initialize;
225 pragma Import (Stdcall, C_Accept, "accept");
226 pragma Import (Stdcall, C_Bind, "bind");
227 pragma Import (Stdcall, C_Close, "closesocket");
228 pragma Import (Stdcall, C_Gethostname, "gethostname");
229 pragma Import (Stdcall, C_Getpeername, "getpeername");
230 pragma Import (Stdcall, C_Getsockname, "getsockname");
231 pragma Import (Stdcall, C_Getsockopt, "getsockopt");
232 pragma Import (Stdcall, C_Ioctl, "ioctlsocket");
233 pragma Import (Stdcall, C_Listen, "listen");
234 pragma Import (Stdcall, C_Recv, "recv");
235 pragma Import (Stdcall, C_Recvfrom, "recvfrom");
236 pragma Import (Stdcall, C_Sendto, "sendto");
237 pragma Import (Stdcall, C_Setsockopt, "setsockopt");
238 pragma Import (Stdcall, C_Shutdown, "shutdown");
239 pragma Import (Stdcall, C_Socket, "socket");
240 pragma Import (C, C_Strerror, "strerror");
241 pragma Import (C, C_System, "_system");
242 pragma Import (Stdcall, Socket_Errno, "WSAGetLastError");
243 pragma Import (Stdcall, Set_Socket_Errno, "WSASetLastError");
244 pragma Import (Stdcall, WSAStartup, "WSAStartup");
245 pragma Import (Stdcall, WSACleanup, "WSACleanup");
247 end GNAT.Sockets.Thin;