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;
122 (Cp : C.Strings.chars_ptr) return C.int;
127 Arg : access C.int) return C.int;
131 Backlog : C.int) return C.int;
135 Iov : System.Address;
136 Iovcnt : C.int) return C.int;
140 Msg : System.Address;
142 Flags : C.int) return C.int;
146 Msg : System.Address;
149 From : Sockaddr_In_Access;
150 Fromlen : not null access C.int) return C.int;
154 Readfds : access Fd_Set;
155 Writefds : access Fd_Set;
156 Exceptfds : access Fd_Set;
157 Timeout : Timeval_Access) return C.int;
161 Msg : System.Address;
164 To : Sockaddr_In_Access;
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 (Errnum : C.int) return C.Strings.chars_ptr;
187 (Command : System.Address) return C.int;
191 Iov : System.Address;
192 Iovcnt : C.int) return 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 -------------------------------------------
222 -- Nonreentrant network databases access --
223 -------------------------------------------
225 function Nonreentrant_Gethostbyname
226 (Name : C.char_array) return Hostent_Access;
228 function Nonreentrant_Gethostbyaddr
229 (Addr : System.Address;
231 Addr_Type : C.int) return Hostent_Access;
233 function Nonreentrant_Getservbyname
234 (Name : C.char_array;
235 Proto : C.char_array) return Servent_Access;
237 function Nonreentrant_Getservbyport
239 Proto : C.char_array) return Servent_Access;
241 procedure Initialize;
246 pragma Import (C, C_Bind, "DECC$BIND");
247 pragma Import (C, C_Close, "DECC$CLOSE");
248 pragma Import (C, C_Gethostname, "DECC$GETHOSTNAME");
249 pragma Import (C, C_Getpeername, "DECC$GETPEERNAME");
250 pragma Import (C, C_Getsockname, "DECC$GETSOCKNAME");
251 pragma Import (C, C_Getsockopt, "DECC$GETSOCKOPT");
252 pragma Import (C, C_Inet_Addr, "DECC$INET_ADDR");
253 pragma Import (C, C_Listen, "DECC$LISTEN");
254 pragma Import (C, C_Select, "DECC$SELECT");
255 pragma Import (C, C_Setsockopt, "DECC$SETSOCKOPT");
256 pragma Import (C, C_Shutdown, "DECC$SHUTDOWN");
257 pragma Import (C, C_Strerror, "DECC$STRERROR");
258 pragma Import (C, C_System, "DECC$SYSTEM");
260 pragma Import (C, Nonreentrant_Gethostbyname, "DECC$GETHOSTBYNAME");
261 pragma Import (C, Nonreentrant_Gethostbyaddr, "DECC$GETHOSTBYADDR");
262 pragma Import (C, Nonreentrant_Getservbyname, "DECC$GETSERVBYNAME");
263 pragma Import (C, Nonreentrant_Getservbyport, "DECC$GETSERVBYPORT");
265 end GNAT.Sockets.Thin;