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jeremybenn |
------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- GNAT.SOCKETS.THIN.SOCKET_ERROR_MESSAGE --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 2007-2009, AdaCore --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. --
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-- --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception, --
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-- version 3.1, as published by the Free Software Foundation. --
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-- --
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-- You should have received a copy of the GNU General Public License and --
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-- a copy of the GCC Runtime Library Exception along with this program; --
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-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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-- <http://www.gnu.org/licenses/>. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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-- This is the default implementation of this unit, using the standard C
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-- library's strerror(3) function. It is used on all platforms except Windows,
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-- since on that platform socket errno values are distinct from the system
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-- ones: there is a specific variant of this function in g-socthi-mingw.adb.
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with System.CRTL.Runtime;
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separate (GNAT.Sockets.Thin)
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--------------------------
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-- Socket_Error_Message --
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--------------------------
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function Socket_Error_Message
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(Errno : Integer) return C.Strings.chars_ptr
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is
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use type Interfaces.C.Strings.chars_ptr;
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C_Msg : constant C.Strings.chars_ptr :=
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System.CRTL.Runtime.strerror (Errno);
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begin
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if C_Msg = C.Strings.Null_Ptr then
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return Unknown_System_Error;
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else
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return C_Msg;
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end if;
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end Socket_Error_Message;
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