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;
120 Cp : C.Strings.chars_ptr;
121 Inp : System.Address) return C.int;
126 Arg : access C.int) return C.int;
130 Backlog : C.int) return C.int;
134 Iov : System.Address;
135 Iovcnt : C.int) return C.int;
139 Msg : System.Address;
141 Flags : C.int) return C.int;
145 Msg : System.Address;
148 From : Sockaddr_In_Access;
149 Fromlen : not null access C.int) return C.int;
153 Readfds : access Fd_Set;
154 Writefds : access Fd_Set;
155 Exceptfds : access Fd_Set;
156 Timeout : Timeval_Access) return C.int;
160 Msg : System.Address;
163 To : Sockaddr_In_Access;
164 Tolen : C.int) return C.int;
166 function C_Setsockopt
170 Optval : System.Address;
171 Optlen : C.int) return C.int;
175 How : C.int) return C.int;
180 Protocol : C.int) return C.int;
183 (Errnum : C.int) return C.Strings.chars_ptr;
186 (Command : System.Address) return C.int;
190 Iov : System.Address;
191 Iovcnt : C.int) return C.int;
194 (WS_Version : Interfaces.C.int;
195 WSADataAddress : System.Address) return Interfaces.C.int;
197 -------------------------------------------------------
198 -- Signalling file descriptors for selector abortion --
199 -------------------------------------------------------
201 package Signalling_Fds is
203 function Create (Fds : not null access Fd_Pair) return C.int;
204 pragma Convention (C, Create);
205 -- Create a pair of connected descriptors suitable for use with C_Select
206 -- (used for signalling in Selector objects).
208 function Read (Rsig : C.int) return C.int;
209 pragma Convention (C, Read);
210 -- Read one byte of data from rsig, the read end of a pair of signalling
211 -- fds created by Create_Signalling_Fds.
213 function Write (Wsig : C.int) return C.int;
214 pragma Convention (C, Write);
215 -- Write one byte of data to wsig, the write end of a pair of signalling
216 -- fds created by Create_Signalling_Fds.
218 procedure Close (Sig : C.int);
219 pragma Convention (C, Close);
220 -- Close one end of a pair of signalling fds (ignoring any error)
224 procedure WSACleanup;
226 procedure Initialize;
230 pragma Import (Stdcall, C_Accept, "accept");
231 pragma Import (Stdcall, C_Bind, "bind");
232 pragma Import (Stdcall, C_Close, "closesocket");
233 pragma Import (Stdcall, C_Gethostname, "gethostname");
234 pragma Import (Stdcall, C_Getpeername, "getpeername");
235 pragma Import (Stdcall, C_Getsockname, "getsockname");
236 pragma Import (Stdcall, C_Getsockopt, "getsockopt");
237 pragma Import (Stdcall, Inet_Pton, "__gnat_inet_pton");
238 pragma Import (Stdcall, C_Ioctl, "ioctlsocket");
239 pragma Import (Stdcall, C_Listen, "listen");
240 pragma Import (Stdcall, C_Recv, "recv");
241 pragma Import (Stdcall, C_Recvfrom, "recvfrom");
242 pragma Import (Stdcall, C_Sendto, "sendto");
243 pragma Import (Stdcall, C_Setsockopt, "setsockopt");
244 pragma Import (Stdcall, C_Shutdown, "shutdown");
245 pragma Import (Stdcall, C_Socket, "socket");
246 pragma Import (C, C_Strerror, "strerror");
247 pragma Import (C, C_System, "_system");
248 pragma Import (Stdcall, Socket_Errno, "WSAGetLastError");
249 pragma Import (Stdcall, Set_Socket_Errno, "WSASetLastError");
250 pragma Import (Stdcall, WSAStartup, "WSAStartup");
251 pragma Import (Stdcall, WSACleanup, "WSACleanup");
253 end GNAT.Sockets.Thin;