1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- GNAT.SOCKETS.THIN.SOCKET_ERROR_MESSAGE -- 6-- -- 7-- B o d y -- 8-- -- 9-- Copyright (C) 2007-2009, 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 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 is the default implementation of this unit, using the standard C 33-- library's strerror(3) function. It is used on all platforms except Windows, 34-- since on that platform socket errno values are distinct from the system 35-- ones: there is a specific variant of this function in g-socthi-mingw.adb. 36 37with System.CRTL.Runtime; 38 39separate (GNAT.Sockets.Thin) 40 41-------------------------- 42-- Socket_Error_Message -- 43-------------------------- 44 45function Socket_Error_Message 46 (Errno : Integer) return C.Strings.chars_ptr 47is 48 use type Interfaces.C.Strings.chars_ptr; 49 C_Msg : constant C.Strings.chars_ptr := 50 System.CRTL.Runtime.strerror (Errno); 51 52begin 53 if C_Msg = C.Strings.Null_Ptr then 54 return Unknown_System_Error; 55 else 56 return C_Msg; 57 end if; 58end Socket_Error_Message; 59