------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- G N A T . S O C K E T S . T H I N -- -- -- -- S p e c -- -- -- -- Copyright (C) 2001-2024, AdaCore -- -- -- -- GNAT is free software; you can redistribute it and/or modify it under -- -- terms of the GNU General Public License as published by the Free Soft- -- -- ware Foundation; either version 3, or (at your option) any later ver- -- -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- -- or FITNESS FOR A PARTICULAR PURPOSE. -- -- -- -- As a special exception under Section 7 of GPL version 3, you are granted -- -- additional permissions described in the GCC Runtime Library Exception, -- -- version 3.1, as published by the Free Software Foundation. -- -- -- -- You should have received a copy of the GNU General Public License and -- -- a copy of the GCC Runtime Library Exception along with this program; -- -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- -- . -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ -- This package provides a target dependent thin interface to the sockets -- layer for use by the GNAT.Sockets package (g-socket.ads). This package -- should not be directly with'ed by an applications program. -- This version is for NT with Interfaces.C; with GNAT.Sockets.Thin_Common; with System; with System.CRTL; package GNAT.Sockets.Thin is use Thin_Common; package C renames Interfaces.C; function Socket_Errno return Integer; -- Returns last socket error number procedure Set_Socket_Errno (Errno : Integer); -- Set last socket error number function Socket_Error_Message (Errno : Integer) return String; -- Returns the error message string for the error number Errno. If Errno is -- not known, returns "Unknown system error". function Host_Errno return Integer; pragma Import (C, Host_Errno, "__gnat_get_h_errno"); -- Returns last host error number package Host_Error_Messages is function Host_Error_Message (H_Errno : Integer) return String; -- Returns the error message string for the host error number H_Errno. -- If H_Errno is not known, returns "Unknown system error". end Host_Error_Messages; -------------------------------- -- Standard library functions -- -------------------------------- function C_Accept (S : C.int; Addr : System.Address; Addrlen : not null access C.int) return C.int; function C_Bind (S : C.int; Name : System.Address; Namelen : C.int) return C.int; function C_Close (Fd : C.int) return C.int; function C_Connect (S : C.int; Name : System.Address; Namelen : C.int) return C.int; function C_Gethostname (Name : System.Address; Namelen : C.int) return C.int; function C_Getpeername (S : C.int; Name : System.Address; Namelen : not null access C.int) return C.int; function C_Getsockname (S : C.int; Name : System.Address; Namelen : not null access C.int) return C.int; function C_Getsockopt (S : C.int; Level : C.int; Optname : C.int; Optval : System.Address; Optlen : not null access C.int) return C.int; function Socket_Ioctl (S : C.int; Req : SOSC.IOCTL_Req_T; Arg : access C.int) return C.int; function C_Listen (S : C.int; Backlog : C.int) return C.int; function C_Recv (S : C.int; Msg : System.Address; Len : C.int; Flags : C.int) return C.int; function C_Recvfrom (S : C.int; Msg : System.Address; Len : C.int; Flags : C.int; From : System.Address; Fromlen : not null access C.int) return C.int; function C_Recvmsg (S : C.int; Msg : System.Address; Flags : C.int) return System.CRTL.ssize_t; function C_Select (Nfds : C.int; Readfds : access Fd_Set; Writefds : access Fd_Set; Exceptfds : access Fd_Set; Timeout : Timeval_Access) return C.int; function C_Sendmsg (S : C.int; Msg : System.Address; Flags : C.int) return System.CRTL.ssize_t; function C_Sendto (S : C.int; Msg : System.Address; Len : C.int; Flags : C.int; To : System.Address; Tolen : C.int) return C.int; function C_Setsockopt (S : C.int; Level : C.int; Optname : C.int; Optval : System.Address; Optlen : C.int) return C.int; function C_Shutdown (S : C.int; How : C.int) return C.int; function C_Socket (Domain : C.int; Typ : C.int; Protocol : C.int) return C.int; Default_Socket_Pair_Family : constant := SOSC.AF_INET; -- Windows has not socketpair system call, and C_Socketpair below is -- implemented on loopback connected network sockets. function C_Socketpair (Domain : C.int; Typ : C.int; Protocol : C.int; Fds : not null access Fd_Pair) return C.int; -- Creates pair of connected sockets function C_System (Command : System.Address) return C.int; function WSAStartup (WS_Version : Interfaces.C.unsigned_short; WSADataAddress : System.Address) return Interfaces.C.int; ------------------------------------------------------- -- Signalling file descriptors for selector abortion -- ------------------------------------------------------- package Signalling_Fds is function Create (Fds : not null access Fd_Pair) return C.int; pragma Convention (C, Create); -- Create a pair of connected descriptors suitable for use with C_Select -- (used for signalling in Selector objects). function Read (Rsig : C.int) return C.int; pragma Convention (C, Read); -- Read one byte of data from rsig, the read end of a pair of signalling -- fds created by Create_Signalling_Fds. function Write (Wsig : C.int) return C.int; pragma Convention (C, Write); -- Write one byte of data to wsig, the write end of a pair of signalling -- fds created by Create_Signalling_Fds. procedure Close (Sig : C.int); pragma Convention (C, Close); -- Close one end of a pair of signalling fds (ignoring any error) end Signalling_Fds; procedure WSACleanup; procedure Initialize; procedure Finalize; private pragma Import (Stdcall, C_Accept, "accept"); pragma Import (Stdcall, C_Bind, "bind"); pragma Import (Stdcall, C_Close, "closesocket"); pragma Import (Stdcall, C_Gethostname, "gethostname"); pragma Import (Stdcall, C_Getpeername, "getpeername"); pragma Import (Stdcall, C_Getsockname, "getsockname"); pragma Import (Stdcall, C_Getsockopt, "getsockopt"); pragma Import (Stdcall, C_Listen, "listen"); pragma Import (Stdcall, C_Recv, "recv"); pragma Import (Stdcall, C_Recvfrom, "recvfrom"); pragma Import (Stdcall, C_Sendto, "sendto"); pragma Import (Stdcall, C_Setsockopt, "setsockopt"); pragma Import (Stdcall, C_Shutdown, "shutdown"); pragma Import (Stdcall, C_Socket, "socket"); pragma Import (C, C_System, "_system"); pragma Import (Stdcall, Socket_Errno, "WSAGetLastError"); pragma Import (Stdcall, Set_Socket_Errno, "WSASetLastError"); pragma Import (Stdcall, WSAStartup, "WSAStartup"); pragma Import (Stdcall, WSACleanup, "WSACleanup"); end GNAT.Sockets.Thin;