1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
5 -- G N A T . S O C K E T S . T H I N --
9 -- Copyright (C) 2001-2012, 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 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. --
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. --
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/>. --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
30 ------------------------------------------------------------------------------
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.
36 -- This version is for NT
38 with Interfaces
.C
.Strings
;
40 with GNAT
.Sockets
.Thin_Common
;
45 package GNAT
.Sockets
.Thin
is
49 package C
renames Interfaces
.C
;
51 use type System
.CRTL
.ssize_t
;
53 function Socket_Errno
return Integer;
54 -- Returns last socket error number
56 procedure Set_Socket_Errno
(Errno
: Integer);
57 -- Set last socket error number
59 function Socket_Error_Message
(Errno
: Integer) return C
.Strings
.chars_ptr
;
60 -- Returns the error message string for the error number Errno. If Errno is
61 -- not known, returns "Unknown system error".
63 function Host_Errno
return Integer;
64 pragma Import
(C
, Host_Errno
, "__gnat_get_h_errno");
65 -- Returns last host error number
67 package Host_Error_Messages
is
69 function Host_Error_Message
70 (H_Errno
: Integer) return C
.Strings
.chars_ptr
;
71 -- Returns the error message string for the host error number H_Errno.
72 -- If H_Errno is not known, returns "Unknown system error".
74 end Host_Error_Messages
;
76 --------------------------------
77 -- Standard library functions --
78 --------------------------------
82 Addr
: System
.Address
;
83 Addrlen
: not null access C
.int
) return C
.int
;
87 Name
: System
.Address
;
88 Namelen
: C
.int
) return C
.int
;
91 (Fd
: C
.int
) return C
.int
;
95 Name
: System
.Address
;
96 Namelen
: C
.int
) return C
.int
;
98 function C_Gethostname
99 (Name
: System
.Address
;
100 Namelen
: C
.int
) return C
.int
;
102 function C_Getpeername
104 Name
: System
.Address
;
105 Namelen
: not null access C
.int
) return C
.int
;
107 function C_Getsockname
109 Name
: System
.Address
;
110 Namelen
: not null access C
.int
) return C
.int
;
112 function C_Getsockopt
116 Optval
: System
.Address
;
117 Optlen
: not null access C
.int
) return C
.int
;
119 function Socket_Ioctl
121 Req
: SOSC
.IOCTL_Req_T
;
122 Arg
: access C
.int
) return C
.int
;
126 Backlog
: C
.int
) return C
.int
;
130 Msg
: System
.Address
;
132 Flags
: C
.int
) return C
.int
;
136 Msg
: System
.Address
;
139 From
: System
.Address
;
140 Fromlen
: not null access C
.int
) return C
.int
;
144 Msg
: System
.Address
;
145 Flags
: C
.int
) return System
.CRTL
.ssize_t
;
149 Readfds
: access Fd_Set
;
150 Writefds
: access Fd_Set
;
151 Exceptfds
: access Fd_Set
;
152 Timeout
: Timeval_Access
) return C
.int
;
156 Msg
: System
.Address
;
157 Flags
: C
.int
) return System
.CRTL
.ssize_t
;
161 Msg
: System
.Address
;
165 Tolen
: C
.int
) return C
.int
;
167 function C_Setsockopt
171 Optval
: System
.Address
;
172 Optlen
: C
.int
) return C
.int
;
176 How
: C
.int
) return C
.int
;
181 Protocol
: C
.int
) return C
.int
;
184 (Command
: System
.Address
) return C
.int
;
187 (WS_Version
: Interfaces
.C
.unsigned_short
;
188 WSADataAddress
: System
.Address
) return Interfaces
.C
.int
;
190 -------------------------------------------------------
191 -- Signalling file descriptors for selector abortion --
192 -------------------------------------------------------
194 package Signalling_Fds
is
196 function Create
(Fds
: not null access Fd_Pair
) return C
.int
;
197 pragma Convention
(C
, Create
);
198 -- Create a pair of connected descriptors suitable for use with C_Select
199 -- (used for signalling in Selector objects).
201 function Read
(Rsig
: C
.int
) return C
.int
;
202 pragma Convention
(C
, Read
);
203 -- Read one byte of data from rsig, the read end of a pair of signalling
204 -- fds created by Create_Signalling_Fds.
206 function Write
(Wsig
: C
.int
) return C
.int
;
207 pragma Convention
(C
, Write
);
208 -- Write one byte of data to wsig, the write end of a pair of signalling
209 -- fds created by Create_Signalling_Fds.
211 procedure Close
(Sig
: C
.int
);
212 pragma Convention
(C
, Close
);
213 -- Close one end of a pair of signalling fds (ignoring any error)
217 procedure WSACleanup
;
219 procedure Initialize
;
223 pragma Import
(Stdcall
, C_Accept
, "accept");
224 pragma Import
(Stdcall
, C_Bind
, "bind");
225 pragma Import
(Stdcall
, C_Close
, "closesocket");
226 pragma Import
(Stdcall
, C_Gethostname
, "gethostname");
227 pragma Import
(Stdcall
, C_Getpeername
, "getpeername");
228 pragma Import
(Stdcall
, C_Getsockname
, "getsockname");
229 pragma Import
(Stdcall
, C_Getsockopt
, "getsockopt");
230 pragma Import
(Stdcall
, C_Listen
, "listen");
231 pragma Import
(Stdcall
, C_Recv
, "recv");
232 pragma Import
(Stdcall
, C_Recvfrom
, "recvfrom");
233 pragma Import
(Stdcall
, C_Sendto
, "sendto");
234 pragma Import
(Stdcall
, C_Setsockopt
, "setsockopt");
235 pragma Import
(Stdcall
, C_Shutdown
, "shutdown");
236 pragma Import
(Stdcall
, C_Socket
, "socket");
237 pragma Import
(C
, C_System
, "_system");
238 pragma Import
(Stdcall
, Socket_Errno
, "WSAGetLastError");
239 pragma Import
(Stdcall
, Set_Socket_Errno
, "WSASetLastError");
240 pragma Import
(Stdcall
, WSAStartup
, "WSAStartup");
241 pragma Import
(Stdcall
, WSACleanup
, "WSACleanup");
243 end GNAT
.Sockets
.Thin
;