1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
5 -- G N A T . S O C K E T S . T H I N --
9 -- Copyright (C) 2002-2008, 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 is the Alpha/VMS version
40 with Interfaces.C.Strings;
43 with GNAT.Sockets.Thin_Common;
47 package GNAT.Sockets.Thin is
49 -- ??? more comments needed ???
53 package C renames Interfaces.C;
55 function Socket_Errno return Integer renames GNAT.OS_Lib.Errno;
56 -- Returns last socket error number
58 procedure Set_Socket_Errno (Errno : Integer) renames GNAT.OS_Lib.Set_Errno;
59 -- Set last socket error number
61 function Socket_Error_Message (Errno : Integer) return C.Strings.chars_ptr;
62 -- Returns the error message string for the error number Errno. If Errno is
63 -- not known, returns "Unknown system error".
65 function Host_Errno return Integer;
66 pragma Import (C, Host_Errno, "__gnat_get_h_errno");
67 -- Returns last host error number
69 package Host_Error_Messages is
71 function Host_Error_Message
72 (H_Errno : Integer) return C.Strings.chars_ptr;
73 -- Returns the error message string for the host error number H_Errno.
74 -- If H_Errno is not known, returns "Unknown system error".
76 end Host_Error_Messages;
78 --------------------------------
79 -- Standard library functions --
80 --------------------------------
84 Addr : System.Address;
85 Addrlen : not null access C.int) return C.int;
89 Name : System.Address;
90 Namelen : C.int) return C.int;
93 (Fd : C.int) return C.int;
97 Name : System.Address;
98 Namelen : C.int) return C.int;
100 function C_Gethostname
101 (Name : System.Address;
102 Namelen : C.int) return C.int;
104 function C_Getpeername
106 Name : System.Address;
107 Namelen : not null access C.int) return C.int;
109 function C_Getsockname
111 Name : System.Address;
112 Namelen : not null access C.int) return C.int;
114 function C_Getsockopt
118 Optval : System.Address;
119 Optlen : not null access C.int) return C.int;
123 Cp : C.Strings.chars_ptr;
124 Inp : System.Address) return C.int;
129 Arg : access C.int) return C.int;
133 Backlog : C.int) return C.int;
137 Iov : System.Address;
138 Iovcnt : C.int) return C.int;
142 Msg : System.Address;
144 Flags : C.int) return C.int;
148 Msg : System.Address;
151 From : Sockaddr_In_Access;
152 Fromlen : not null access C.int) return C.int;
156 Readfds : access Fd_Set;
157 Writefds : access Fd_Set;
158 Exceptfds : access Fd_Set;
159 Timeout : Timeval_Access) return C.int;
163 Msg : System.Address;
166 To : Sockaddr_In_Access;
167 Tolen : C.int) return C.int;
169 function C_Setsockopt
173 Optval : System.Address;
174 Optlen : C.int) return C.int;
178 How : C.int) return C.int;
183 Protocol : C.int) return C.int;
186 (Errnum : C.int) return C.Strings.chars_ptr;
189 (Command : System.Address) return C.int;
193 Iov : System.Address;
194 Iovcnt : C.int) return C.int;
196 -------------------------------------------------------
197 -- Signalling file descriptors for selector abortion --
198 -------------------------------------------------------
200 package Signalling_Fds is
202 function Create (Fds : not null access Fd_Pair) return C.int;
203 pragma Convention (C, Create);
204 -- Create a pair of connected descriptors suitable for use with C_Select
205 -- (used for signalling in Selector objects).
207 function Read (Rsig : C.int) return C.int;
208 pragma Convention (C, Read);
209 -- Read one byte of data from rsig, the read end of a pair of signalling
210 -- fds created by Create_Signalling_Fds.
212 function Write (Wsig : C.int) return C.int;
213 pragma Convention (C, Write);
214 -- Write one byte of data to wsig, the write end of a pair of signalling
215 -- fds created by Create_Signalling_Fds.
217 procedure Close (Sig : C.int);
218 pragma Convention (C, Close);
219 -- Close one end of a pair of signalling fds (ignoring any error)
223 -------------------------------------------
224 -- Nonreentrant network databases access --
225 -------------------------------------------
227 function Nonreentrant_Gethostbyname
228 (Name : C.char_array) return Hostent_Access;
230 function Nonreentrant_Gethostbyaddr
231 (Addr : System.Address;
233 Addr_Type : C.int) return Hostent_Access;
235 function Nonreentrant_Getservbyname
236 (Name : C.char_array;
237 Proto : C.char_array) return Servent_Access;
239 function Nonreentrant_Getservbyport
241 Proto : C.char_array) return Servent_Access;
243 procedure Initialize;
248 pragma Import (C, C_Bind, "DECC$BIND");
249 pragma Import (C, C_Close, "DECC$CLOSE");
250 pragma Import (C, C_Gethostname, "DECC$GETHOSTNAME");
251 pragma Import (C, C_Getpeername, "DECC$GETPEERNAME");
252 pragma Import (C, C_Getsockname, "DECC$GETSOCKNAME");
253 pragma Import (C, C_Getsockopt, "DECC$GETSOCKOPT");
254 pragma Import (C, C_Listen, "DECC$LISTEN");
255 pragma Import (C, C_Select, "DECC$SELECT");
256 pragma Import (C, C_Setsockopt, "DECC$SETSOCKOPT");
257 pragma Import (C, C_Shutdown, "DECC$SHUTDOWN");
258 pragma Import (C, C_Strerror, "DECC$STRERROR");
259 pragma Import (C, C_System, "DECC$SYSTEM");
261 pragma Import (C, Nonreentrant_Gethostbyname, "DECC$GETHOSTBYNAME");
262 pragma Import (C, Nonreentrant_Gethostbyaddr, "DECC$GETHOSTBYADDR");
263 pragma Import (C, Nonreentrant_Getservbyname, "DECC$GETSERVBYNAME");
264 pragma Import (C, Nonreentrant_Getservbyport, "DECC$GETSERVBYPORT");
266 end GNAT.Sockets.Thin;