1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
5 -- G N A T . S O C K E T S . T H I N --
9 -- Copyright (C) 2001-2009, 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
;
53 type ssize_t
is range -(2 ** (C
.size_t
'Size - 1))
54 .. +(2 ** (C
.size_t
'Size - 1) - 1);
55 -- Signed type of the same size as size_t
57 function Socket_Errno
return Integer;
58 -- Returns last socket error number
60 procedure Set_Socket_Errno
(Errno
: Integer);
61 -- Set last socket error number
63 function Socket_Error_Message
(Errno
: Integer) return C
.Strings
.chars_ptr
;
64 -- Returns the error message string for the error number Errno. If Errno is
65 -- not known, returns "Unknown system error".
67 function Host_Errno
return Integer;
68 pragma Import
(C
, Host_Errno
, "__gnat_get_h_errno");
69 -- Returns last host error number
71 package Host_Error_Messages
is
73 function Host_Error_Message
74 (H_Errno
: Integer) return C
.Strings
.chars_ptr
;
75 -- Returns the error message string for the host error number H_Errno.
76 -- If H_Errno is not known, returns "Unknown system error".
78 end Host_Error_Messages
;
80 --------------------------------
81 -- Standard library functions --
82 --------------------------------
86 Addr
: System
.Address
;
87 Addrlen
: not null access C
.int
) return C
.int
;
91 Name
: System
.Address
;
92 Namelen
: C
.int
) return C
.int
;
95 (Fd
: C
.int
) return C
.int
;
99 Name
: System
.Address
;
100 Namelen
: C
.int
) return C
.int
;
102 function C_Gethostname
103 (Name
: System
.Address
;
104 Namelen
: C
.int
) return C
.int
;
106 function C_Getpeername
108 Name
: System
.Address
;
109 Namelen
: not null access C
.int
) return C
.int
;
111 function C_Getsockname
113 Name
: System
.Address
;
114 Namelen
: not null access C
.int
) return C
.int
;
116 function C_Getsockopt
120 Optval
: System
.Address
;
121 Optlen
: not null access C
.int
) return C
.int
;
123 function Socket_Ioctl
126 Arg
: access C
.int
) return C
.int
;
130 Backlog
: C
.int
) return C
.int
;
134 Msg
: System
.Address
;
136 Flags
: C
.int
) return C
.int
;
140 Msg
: System
.Address
;
143 From
: System
.Address
;
144 Fromlen
: not null access C
.int
) return C
.int
;
148 Msg
: System
.Address
;
149 Flags
: C
.int
) return ssize_t
;
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
;
161 Flags
: C
.int
) return ssize_t
;
165 Msg
: System
.Address
;
169 Tolen
: C
.int
) return C
.int
;
171 function C_Setsockopt
175 Optval
: System
.Address
;
176 Optlen
: C
.int
) return C
.int
;
180 How
: C
.int
) return C
.int
;
185 Protocol
: C
.int
) return C
.int
;
188 (Command
: System
.Address
) return C
.int
;
191 (WS_Version
: Interfaces
.C
.unsigned_short
;
192 WSADataAddress
: System
.Address
) return Interfaces
.C
.int
;
194 -------------------------------------------------------
195 -- Signalling file descriptors for selector abortion --
196 -------------------------------------------------------
198 package Signalling_Fds
is
200 function Create
(Fds
: not null access Fd_Pair
) return C
.int
;
201 pragma Convention
(C
, Create
);
202 -- Create a pair of connected descriptors suitable for use with C_Select
203 -- (used for signalling in Selector objects).
205 function Read
(Rsig
: C
.int
) return C
.int
;
206 pragma Convention
(C
, Read
);
207 -- Read one byte of data from rsig, the read end of a pair of signalling
208 -- fds created by Create_Signalling_Fds.
210 function Write
(Wsig
: C
.int
) return C
.int
;
211 pragma Convention
(C
, Write
);
212 -- Write one byte of data to wsig, the write end of a pair of signalling
213 -- fds created by Create_Signalling_Fds.
215 procedure Close
(Sig
: C
.int
);
216 pragma Convention
(C
, Close
);
217 -- Close one end of a pair of signalling fds (ignoring any error)
221 procedure WSACleanup
;
223 procedure Initialize
;
227 pragma Import
(Stdcall
, C_Accept
, "accept");
228 pragma Import
(Stdcall
, C_Bind
, "bind");
229 pragma Import
(Stdcall
, C_Close
, "closesocket");
230 pragma Import
(Stdcall
, C_Gethostname
, "gethostname");
231 pragma Import
(Stdcall
, C_Getpeername
, "getpeername");
232 pragma Import
(Stdcall
, C_Getsockname
, "getsockname");
233 pragma Import
(Stdcall
, C_Getsockopt
, "getsockopt");
234 pragma Import
(Stdcall
, C_Listen
, "listen");
235 pragma Import
(Stdcall
, C_Recv
, "recv");
236 pragma Import
(Stdcall
, C_Recvfrom
, "recvfrom");
237 pragma Import
(Stdcall
, C_Sendto
, "sendto");
238 pragma Import
(Stdcall
, C_Setsockopt
, "setsockopt");
239 pragma Import
(Stdcall
, C_Shutdown
, "shutdown");
240 pragma Import
(Stdcall
, C_Socket
, "socket");
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
;