1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT COMPILER COMPONENTS                         --
4--                                                                          --
5--                    G N A T . S O C K E T S . T H I N                     --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--                     Copyright (C) 2002-2018, AdaCore                     --
10--                                                                          --
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.                                     --
17--                                                                          --
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.               --
21--                                                                          --
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/>.                                          --
26--                                                                          --
27-- GNAT was originally developed  by the GNAT team at  New York University. --
28-- Extensive contributions were provided by Ada Core Technologies Inc.      --
29--                                                                          --
30------------------------------------------------------------------------------
31
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.
35
36--  This is the version for VxWorks
37
38with Interfaces.C;
39
40with GNAT.OS_Lib;
41with GNAT.Sockets.Thin_Common;
42
43with System;
44with System.CRTL;
45
46package GNAT.Sockets.Thin is
47
48   use Thin_Common;
49
50   package C renames Interfaces.C;
51
52   function Socket_Errno return Integer renames GNAT.OS_Lib.Errno;
53   --  Returns last socket error number
54
55   procedure Set_Socket_Errno (Errno : Integer) renames GNAT.OS_Lib.Set_Errno;
56   --  Set last socket error number
57
58   function Socket_Error_Message (Errno : Integer) return String;
59   --  Returns the error message string for the error number Errno. If Errno is
60   --  not known, returns "Unknown system error".
61
62   function Host_Errno return Integer;
63   pragma Import (C, Host_Errno, "__gnat_get_h_errno");
64   --  Returns last host error number
65
66   package Host_Error_Messages is
67
68      function Host_Error_Message (H_Errno : Integer) return String;
69      --  Returns the error message string for the host error number H_Errno.
70      --  If H_Errno is not known, returns "Unknown system error".
71
72   end Host_Error_Messages;
73
74   --------------------------------
75   -- Standard library functions --
76   --------------------------------
77
78   function C_Accept
79     (S       : C.int;
80      Addr    : System.Address;
81      Addrlen : not null access C.int) return C.int;
82
83   function C_Bind
84     (S       : C.int;
85      Name    : System.Address;
86      Namelen : C.int) return C.int;
87
88   function C_Close
89     (Fd : C.int) return C.int;
90
91   function C_Connect
92     (S       : C.int;
93      Name    : System.Address;
94      Namelen : C.int) return C.int;
95
96   function C_Gethostname
97     (Name    : System.Address;
98      Namelen : C.int) return C.int;
99
100   function C_Getpeername
101     (S       : C.int;
102      Name    : System.Address;
103      Namelen : not null access C.int) return C.int;
104
105   function C_Getsockname
106     (S       : C.int;
107      Name    : System.Address;
108      Namelen : not null access C.int) return C.int;
109
110   function C_Getsockopt
111     (S       : C.int;
112      Level   : C.int;
113      Optname : C.int;
114      Optval  : System.Address;
115      Optlen  : not null access C.int) return C.int;
116
117   function Socket_Ioctl
118     (S   : C.int;
119      Req : SOSC.IOCTL_Req_T;
120      Arg : access C.int) return C.int;
121
122   function C_Listen
123     (S       : C.int;
124      Backlog : C.int) return C.int;
125
126   function C_Recv
127     (S     : C.int;
128      Msg   : System.Address;
129      Len   : C.int;
130      Flags : C.int) return C.int;
131
132   function C_Recvfrom
133     (S       : C.int;
134      Msg     : System.Address;
135      Len     : C.int;
136      Flags   : C.int;
137      From    : System.Address;
138      Fromlen : not null access C.int) return C.int;
139
140   function C_Recvmsg
141     (S     : C.int;
142      Msg   : System.Address;
143      Flags : C.int) return System.CRTL.ssize_t;
144
145   function C_Select
146     (Nfds      : C.int;
147      Readfds   : access Fd_Set;
148      Writefds  : access Fd_Set;
149      Exceptfds : access Fd_Set;
150      Timeout   : Timeval_Access) return C.int;
151
152   function C_Sendmsg
153     (S     : C.int;
154      Msg   : System.Address;
155      Flags : C.int) return System.CRTL.ssize_t;
156
157   function C_Sendto
158     (S     : C.int;
159      Msg   : System.Address;
160      Len   : C.int;
161      Flags : C.int;
162      To    : System.Address;
163      Tolen : C.int) return C.int;
164
165   function C_Setsockopt
166     (S       : C.int;
167      Level   : C.int;
168      Optname : C.int;
169      Optval  : System.Address;
170      Optlen  : C.int) return C.int;
171
172   function C_Shutdown
173     (S   : C.int;
174      How : C.int) return C.int;
175
176   function C_Socket
177     (Domain   : C.int;
178      Typ      : C.int;
179      Protocol : C.int) return C.int;
180
181   function C_System
182     (Command : System.Address) return C.int;
183
184   -------------------------------------------------------
185   -- Signalling file descriptors for selector abortion --
186   -------------------------------------------------------
187
188   package Signalling_Fds is
189
190      function Create (Fds : not null access Fd_Pair) return C.int;
191      pragma Convention (C, Create);
192      --  Create a pair of connected descriptors suitable for use with C_Select
193      --  (used for signalling in Selector objects).
194
195      function Read (Rsig : C.int) return C.int;
196      pragma Convention (C, Read);
197      --  Read one byte of data from rsig, the read end of a pair of signalling
198      --  fds created by Create_Signalling_Fds.
199
200      function Write (Wsig : C.int) return C.int;
201      pragma Convention (C, Write);
202      --  Write one byte of data to wsig, the write end of a pair of signalling
203      --  fds created by Create_Signalling_Fds.
204
205      procedure Close (Sig : C.int);
206      pragma Convention (C, Close);
207      --  Close one end of a pair of signalling fds (ignoring any error)
208
209   end Signalling_Fds;
210
211   procedure Initialize;
212   procedure Finalize;
213
214private
215   pragma Import (C, C_Bind, "bind");
216   pragma Import (C, C_Close, "close");
217   pragma Import (C, C_Gethostname, "gethostname");
218   pragma Import (C, C_Getpeername, "getpeername");
219   pragma Import (C, C_Getsockname, "getsockname");
220   pragma Import (C, C_Getsockopt, "getsockopt");
221   pragma Import (C, C_Listen, "listen");
222   pragma Import (C, C_Select, "select");
223   pragma Import (C, C_Setsockopt, "setsockopt");
224   pragma Import (C, C_Shutdown, "shutdown");
225   pragma Import (C, C_System, "system");
226end GNAT.Sockets.Thin;
227