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view docs/html/sdlnumjoysticks.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_NumJoysticks</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="Joystick"
HREF="joystick.html"><LINK
REL="PREVIOUS"
TITLE="Joystick"
HREF="joystick.html"><LINK
REL="NEXT"
TITLE="SDL_JoystickName"
HREF="sdljoystickname.html"></HEAD
><BODY
CLASS="REFENTRY"
BGCOLOR="#FFF8DC"
TEXT="#000000"
LINK="#0000ee"
VLINK="#551a8b"
ALINK="#ff0000"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>SDL Library Documentation</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="joystick.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
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VALIGN="bottom"
><A
HREF="sdljoystickname.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><H1
><A
NAME="SDLNUMJOYSTICKS"
></A
>SDL_NumJoysticks</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN6039"
></A
><H2
>Name</H2
>SDL_NumJoysticks&nbsp;--&nbsp;Count available joysticks.</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN6042"
></A
><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><A
NAME="AEN6043"
></A
><P
></P
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>int <B
CLASS="FSFUNC"
>SDL_NumJoysticks</B
></CODE
>(void);</CODE
></P
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN6049"
></A
><H2
>Description</H2
><P
>Counts the number of joysticks attached to the system.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN6052"
></A
><H2
>Return Value</H2
><P
>Returns the number of attached joysticks</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN6055"
></A
><H2
>See Also</H2
><P
><A
HREF="sdljoystickname.html"
><TT
CLASS="FUNCTION"
>SDL_JoystickName</TT
></A
>,
<A
HREF="sdljoystickopen.html"
><TT
CLASS="FUNCTION"
>SDL_JoystickOpen</TT
></A
></P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
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><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="joystick.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
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><A
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ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
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><A
HREF="sdljoystickname.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
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>Joystick</TD
><TD
WIDTH="34%"
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><A
HREF="joystick.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>SDL_JoystickName</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>