gcc/ada/g-socthi-vxworks.ads

   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) 2002-2009, 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 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.                                              --
  21 --                                                                          --
  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.                                      --
  28 --                                                                          --
  29 -- GNAT was originally developed  by the GNAT team at  New York University. --
  30 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  31 --                                                                          --
  32 ------------------------------------------------------------------------------
  33
  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.
  37
  38 --  This is the version for VxWorks
  39
  40 with Interfaces.C.Strings;
  41
  42 with GNAT.OS_Lib;
  43 with GNAT.Sockets.Thin_Common;
  44
  45 with System;
  46 with System.CRTL;
  47
  48 package GNAT.Sockets.Thin is
  49
  50    use Thin_Common;
  51
  52    package C renames Interfaces.C;
  53
  54    use type System.CRTL.ssize_t;
  55
  56    function Socket_Errno return Integer renames GNAT.OS_Lib.Errno;
  57    --  Returns last socket error number
  58
  59    procedure Set_Socket_Errno (Errno : Integer) renames GNAT.OS_Lib.Set_Errno;
  60    --  Set last socket error number
  61
  62    function Socket_Error_Message (Errno : Integer) return C.Strings.chars_ptr;
  63    --  Returns the error message string for the error number Errno. If Errno is
  64    --  not known, returns "Unknown system error".
  65
  66    function Host_Errno return Integer;
  67    pragma Import (C, Host_Errno, "__gnat_get_h_errno");
  68    --  Returns last host error number
  69
  70    package Host_Error_Messages is
  71
  72       function Host_Error_Message
  73         (H_Errno : Integer) return C.Strings.chars_ptr;
  74       --  Returns the error message string for the host error number H_Errno.
  75       --  If H_Errno is not known, returns "Unknown system error".
  76
  77    end Host_Error_Messages;
  78
  79    --------------------------------
  80    -- Standard library functions --
  81    --------------------------------
  82
  83    function C_Accept
  84      (S       : C.int;
  85       Addr    : System.Address;
  86       Addrlen : not null access C.int) return C.int;
  87
  88    function C_Bind
  89      (S       : C.int;
  90       Name    : System.Address;
  91       Namelen : C.int) return C.int;
  92
  93    function C_Close
  94      (Fd : C.int) return C.int;
  95
  96    function C_Connect
  97      (S       : C.int;
  98       Name    : System.Address;
  99       Namelen : C.int) return C.int;
 100
 101    function C_Gethostname
 102      (Name    : System.Address;
 103       Namelen : C.int) return C.int;
 104
 105    function C_Getpeername
 106      (S       : C.int;
 107       Name    : System.Address;
 108       Namelen : not null access C.int) return C.int;
 109
 110    function C_Getsockname
 111      (S       : C.int;
 112       Name    : System.Address;
 113       Namelen : not null access C.int) return C.int;
 114
 115    function C_Getsockopt
 116      (S       : C.int;
 117       Level   : C.int;
 118       Optname : C.int;
 119       Optval  : System.Address;
 120       Optlen  : not null access C.int) return C.int;
 121
 122    function Socket_Ioctl
 123      (S   : C.int;
 124       Req : C.int;
 125       Arg : access C.int) return C.int;
 126
 127    function C_Listen
 128      (S       : C.int;
 129       Backlog : C.int) return C.int;
 130
 131    function C_Recv
 132      (S     : C.int;
 133       Msg   : System.Address;
 134       Len   : C.int;
 135       Flags : C.int) return C.int;
 136
 137    function C_Recvfrom
 138      (S       : C.int;
 139       Msg     : System.Address;
 140       Len     : C.int;
 141       Flags   : C.int;
 142       From    : System.Address;
 143       Fromlen : not null access C.int) return C.int;
 144
 145    function C_Recvmsg
 146      (S     : C.int;
 147       Msg   : System.Address;
 148       Flags : C.int) return System.CRTL.ssize_t;
 149
 150    function C_Select
 151      (Nfds      : C.int;
 152       Readfds   : access Fd_Set;
 153       Writefds  : access Fd_Set;
 154       Exceptfds : access Fd_Set;
 155       Timeout   : Timeval_Access) return C.int;
 156
 157    function C_Sendmsg
 158      (S     : C.int;
 159       Msg   : System.Address;
 160       Flags : C.int) return System.CRTL.ssize_t;
 161
 162    function C_Sendto
 163      (S     : C.int;
 164       Msg   : System.Address;
 165       Len   : C.int;
 166       Flags : C.int;
 167       To    : System.Address;
 168       Tolen : C.int) return C.int;
 169
 170    function C_Setsockopt
 171      (S       : C.int;
 172       Level   : C.int;
 173       Optname : C.int;
 174       Optval  : System.Address;
 175       Optlen  : C.int) return C.int;
 176
 177    function C_Shutdown
 178      (S   : C.int;
 179       How : C.int) return C.int;
 180
 181    function C_Socket
 182      (Domain   : C.int;
 183       Typ      : C.int;
 184       Protocol : C.int) return C.int;
 185
 186    function C_System
 187      (Command : System.Address) return C.int;
 188
 189    -------------------------------------------------------
 190    -- Signalling file descriptors for selector abortion --
 191    -------------------------------------------------------
 192
 193    package Signalling_Fds is
 194
 195       function Create (Fds : not null access Fd_Pair) return C.int;
 196       pragma Convention (C, Create);
 197       --  Create a pair of connected descriptors suitable for use with C_Select
 198       --  (used for signalling in Selector objects).
 199
 200       function Read (Rsig : C.int) return C.int;
 201       pragma Convention (C, Read);
 202       --  Read one byte of data from rsig, the read end of a pair of signalling
 203       --  fds created by Create_Signalling_Fds.
 204
 205       function Write (Wsig : C.int) return C.int;
 206       pragma Convention (C, Write);
 207       --  Write one byte of data to wsig, the write end of a pair of signalling
 208       --  fds created by Create_Signalling_Fds.
 209
 210       procedure Close (Sig : C.int);
 211       pragma Convention (C, Close);
 212       --  Close one end of a pair of signalling fds (ignoring any error)
 213
 214    end Signalling_Fds;
 215
 216    procedure Initialize;
 217    procedure Finalize;
 218
 219 private
 220    pragma Import (C, C_Bind, "bind");
 221    pragma Import (C, C_Close, "close");
 222    pragma Import (C, C_Gethostname, "gethostname");
 223    pragma Import (C, C_Getpeername, "getpeername");
 224    pragma Import (C, C_Getsockname, "getsockname");
 225    pragma Import (C, C_Getsockopt, "getsockopt");
 226    pragma Import (C, C_Listen, "listen");
 227    pragma Import (C, C_Select, "select");
 228    pragma Import (C, C_Setsockopt, "setsockopt");
 229    pragma Import (C, C_Shutdown, "shutdown");
 230    pragma Import (C, C_System, "system");
 231 end GNAT.Sockets.Thin;