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Fixed bug #855 Ludwig Nussel 2009-10-18 06:31:52 PDT an mprotect call was added to fix bug 528. However that results in a buffer that allows writing and code execution. Ie the no-execute security features of modern operating systems are defeated this way. Two mprotect calls are needed. One to make the buffer executable but not writeable when done and another one to make the buffer writeable again if the content needs to be changed.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 18 Oct 2009 17:31:37 +0000
parents c6a447c98584
children
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<!DOCTYPE HTML PUBLIC "-//Norman Walsh//DTD DocBook HTML 1.0//EN">
<HTML>
<HEAD><TITLE>Simple DirectMedia Layer Introduction</TITLE></HEAD>
<BODY BGCOLOR="#FFF8DC" TEXT="#000000" LINK="#0000ee" VLINK="#551a8b" ALINK="#ff0000">
<DIV CLASS="NAVHEADER">
<HR ALIGN="LEFT" WIDTH="100%">
</DIV>
<DIV CLASS="PREFACE">
<H2><A NAME="AEN8">Simple DirectMedia Layer Introduction</A></H2>
<P>
This library is designed to make it easy to write games that run on many
different platforms using the various native high-performance media interfaces,
(for video, audio, etc) and presenting a single source-code level API to
your application.  This is a fairly low level API, but using this, completely
portable applications can be written with a great deal of flexibility.
</P><P>
An introduction to SDL can be found online at:
<A HREF="http://www.libsdl.org/intro.php" TARGET="_top">
         http://www.libsdl.org/intro.php</A>
</P><P>
Tutorials on a variety of topics can be found online at:
<A HREF="http://www.libsdl.org/tutorials.php" TARGET="_top">
         http://www.libsdl.org/tutorials.php</A>
</P><P>
Documentation in Wiki form can be found online at:
<A HREF="http://www.libsdl.org/cgi/docwiki.cgi/" TARGET="_top">
         http://www.libsdl.org/cgi/docwiki.cgi/</A>
</P><P>
Enjoy!
</P><P>
&nbsp;&nbsp;&nbsp; Sam Lantinga
<TT CLASS="EMAIL">&#60;<A HREF="mailto:slouken@libsdl.org"><A HREF="mailto:slouken@libsdl.org" TARGET="_top" >slouken@libsdl.org</A></A>&#62;</TT>
</P> <P>
<br><br><HR>
<H1>Table of Contents</H1>
<UL>
<LI><A HREF="html/index.html">Full Table of Contents</A></LI>
<LI><A HREF="html/guide.html">The SDL Guide</A></LI>
<LI><A HREF="html/reference.html">The SDL Reference</A></LI>
<UL>
<LI><A HREF="html/general.html">Initialization</A></LI>
<LI><A HREF="html/video.html">Video</A></LI>
<LI><A HREF="html/wm.html">Window Manager</A></LI>
<LI><A HREF="html/event.html">Event Handling</A></LI>
<LI><A HREF="html/joystick.html">Joystick</A></LI>
<LI><A HREF="html/audio.html">Audio</A></LI>
<LI><A HREF="html/cdrom.html">CDROM</A></LI>
<LI><A HREF="html/thread.html">Threads</A></LI>
<LI><A HREF="html/time.html">Timers</A></LI>
</UL>
</UL>
</DIV
></BODY
></HTML
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