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view docs/html/sdlfreewav.html @ 4355:9b464226e541 SDL-1.2

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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 355632dca928
children
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<HTML
><HEAD
><TITLE
>SDL_FreeWAV</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
"><LINK
REL="HOME"
TITLE="SDL Library Documentation"
HREF="index.html"><LINK
REL="UP"
TITLE="Audio"
HREF="audio.html"><LINK
REL="PREVIOUS"
TITLE="SDL_LoadWAV"
HREF="sdlloadwav.html"><LINK
REL="NEXT"
TITLE="SDL_AudioCVT"
HREF="sdlaudiocvt.html"></HEAD
><BODY
CLASS="REFENTRY"
BGCOLOR="#FFF8DC"
TEXT="#000000"
LINK="#0000ee"
VLINK="#551a8b"
ALINK="#ff0000"
><DIV
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><TABLE
SUMMARY="Header navigation table"
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BORDER="0"
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><TR
><TH
COLSPAN="3"
ALIGN="center"
>SDL Library Documentation</TH
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></TD
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><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><H1
><A
NAME="SDLFREEWAV"
></A
>SDL_FreeWAV</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN6857"
></A
><H2
>Name</H2
>SDL_FreeWAV&nbsp;--&nbsp;Frees previously opened WAV data</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN6860"
></A
><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><A
NAME="AEN6861"
></A
><P
></P
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>void <B
CLASS="FSFUNC"
>SDL_FreeWAV</B
></CODE
>(Uint8 *audio_buf);</CODE
></P
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN6867"
></A
><H2
>Description</H2
><P
>After a WAVE file has been opened with <A
HREF="sdlloadwav.html"
><TT
CLASS="FUNCTION"
>SDL_LoadWAV</TT
></A
> its data can eventually be freed with <TT
CLASS="FUNCTION"
>SDL_FreeWAV</TT
>. <TT
CLASS="PARAMETER"
><I
>audio_buf</I
></TT
> is a pointer to the buffer created by <TT
CLASS="FUNCTION"
>SDL_LoadWAV</TT
>.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN6875"
></A
><H2
>See Also</H2
><P
><A
HREF="sdlloadwav.html"
><TT
CLASS="FUNCTION"
>SDL_LoadWAV</TT
></A
></P
></DIV
><DIV
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SUMMARY="Footer navigation table"
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><A
HREF="sdlloadwav.html"
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>Prev</A
></TD
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><TR
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>