1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
5 -- G N A T . S O C K E T S . T H I N --
9 -- Copyright (C) 2002-2009, 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 is the version for VxWorks
40 with Interfaces
.C
.Strings
;
43 with GNAT
.Sockets
.Thin_Common
;
47 package GNAT
.Sockets
.Thin
is
51 package C
renames Interfaces
.C
;
54 type ssize_t
is range -(2 ** (C
.size_t
'Size - 1))
55 .. +(2 ** (C
.size_t
'Size - 1) - 1);
56 -- Signed type of the same size as size_t
58 function Socket_Errno
return Integer renames GNAT
.OS_Lib
.Errno
;
59 -- Returns last socket error number
61 procedure Set_Socket_Errno
(Errno
: Integer) renames GNAT
.OS_Lib
.Set_Errno
;
62 -- Set last socket error number
64 function Socket_Error_Message
(Errno
: Integer) return C
.Strings
.chars_ptr
;
65 -- Returns the error message string for the error number Errno. If Errno is
66 -- not known, returns "Unknown system error".
68 function Host_Errno
return Integer;
69 pragma Import
(C
, Host_Errno
, "__gnat_get_h_errno");
70 -- Returns last host error number
72 package Host_Error_Messages
is
74 function Host_Error_Message
75 (H_Errno
: Integer) return C
.Strings
.chars_ptr
;
76 -- Returns the error message string for the host error number H_Errno.
77 -- If H_Errno is not known, returns "Unknown system error".
79 end Host_Error_Messages
;
81 --------------------------------
82 -- Standard library functions --
83 --------------------------------
87 Addr
: System
.Address
;
88 Addrlen
: not null access C
.int
) return C
.int
;
92 Name
: System
.Address
;
93 Namelen
: C
.int
) return C
.int
;
96 (Fd
: C
.int
) return C
.int
;
100 Name
: System
.Address
;
101 Namelen
: C
.int
) return C
.int
;
103 function C_Gethostname
104 (Name
: System
.Address
;
105 Namelen
: C
.int
) return C
.int
;
107 function C_Getpeername
109 Name
: System
.Address
;
110 Namelen
: not null access C
.int
) return C
.int
;
112 function C_Getsockname
114 Name
: System
.Address
;
115 Namelen
: not null access C
.int
) return C
.int
;
117 function C_Getsockopt
121 Optval
: System
.Address
;
122 Optlen
: not null access C
.int
) return C
.int
;
124 function Socket_Ioctl
127 Arg
: access C
.int
) return C
.int
;
131 Backlog
: C
.int
) return C
.int
;
135 Msg
: System
.Address
;
137 Flags
: C
.int
) return C
.int
;
141 Msg
: System
.Address
;
144 From
: System
.Address
;
145 Fromlen
: not null access C
.int
) return C
.int
;
149 Msg
: System
.Address
;
150 Flags
: C
.int
) return ssize_t
;
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
;
162 Flags
: C
.int
) return ssize_t
;
166 Msg
: System
.Address
;
170 Tolen
: C
.int
) return C
.int
;
172 function C_Setsockopt
176 Optval
: System
.Address
;
177 Optlen
: C
.int
) return C
.int
;
181 How
: C
.int
) return C
.int
;
186 Protocol
: C
.int
) return C
.int
;
189 (Command
: System
.Address
) return C
.int
;
191 -------------------------------------------------------
192 -- Signalling file descriptors for selector abortion --
193 -------------------------------------------------------
195 package Signalling_Fds
is
197 function Create
(Fds
: not null access Fd_Pair
) return C
.int
;
198 pragma Convention
(C
, Create
);
199 -- Create a pair of connected descriptors suitable for use with C_Select
200 -- (used for signalling in Selector objects).
202 function Read
(Rsig
: C
.int
) return C
.int
;
203 pragma Convention
(C
, Read
);
204 -- Read one byte of data from rsig, the read end of a pair of signalling
205 -- fds created by Create_Signalling_Fds.
207 function Write
(Wsig
: C
.int
) return C
.int
;
208 pragma Convention
(C
, Write
);
209 -- Write one byte of data to wsig, the write end of a pair of signalling
210 -- fds created by Create_Signalling_Fds.
212 procedure Close
(Sig
: C
.int
);
213 pragma Convention
(C
, Close
);
214 -- Close one end of a pair of signalling fds (ignoring any error)
218 procedure Initialize
;
222 pragma Import
(C
, C_Bind
, "bind");
223 pragma Import
(C
, C_Close
, "close");
224 pragma Import
(C
, C_Gethostname
, "gethostname");
225 pragma Import
(C
, C_Getpeername
, "getpeername");
226 pragma Import
(C
, C_Getsockname
, "getsockname");
227 pragma Import
(C
, C_Getsockopt
, "getsockopt");
228 pragma Import
(C
, C_Listen
, "listen");
229 pragma Import
(C
, C_Select
, "select");
230 pragma Import
(C
, C_Setsockopt
, "setsockopt");
231 pragma Import
(C
, C_Shutdown
, "shutdown");
232 pragma Import
(C
, C_System
, "system");
233 end GNAT
.Sockets
.Thin
;