HDAPS

2006-02-28T13:08:21Z

Batist: /* Games */

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=== HDAPS - IBM Active Protection System Linux Driver ===
This is the Linux driver for monitoring the acceleratometer known as [[Active Protection System|IBM Active Protection System]].

The driver only enables reading of the acceleration data. It does '''not''' perform [[#Harddisk Protection|automatic disk head parking]]. But there are already some other useful [[#Applications|applications]] for HDAPS, using the {{path|/sys}} interface it provides.
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=== Features ===
*provides accelerometer values via sysfs
*provides a joystick type input device

=== Project Homepage / Availability ===
*[http://hdaps.sourceforge.net/ Project Homepage]
*The driver is included in the 2.6-mm series of kernels since August, 26th 2005.
*The driver is now in the mainline (2.6.14).

=== Status ===
A driver is included in recent Linux kernels and is actively maintained.

=== Harddisk Protection ===
As mentioned above, the hdaps kernel driver is only responsible for reading the accelerometer data and exporting it through the sysfs interface. In order to use this information to protect the disk, some additional steps are required.

See [[How to protect the harddisk through APS]].

=== Input device support ===
It seems ([http://lkml.org/lkml/2005/9/22/217], [http://lkml.org/lkml/2005/11/22/129]) that (with kernels from 2.6.14?) the hdaps driver also exports a joystick type input device. (This hasn't been verifyed so far.)

=== Applications ===
====Disk head parking====
* Kernel patch
**[http://lwn.net/Articles/154923/ disk park patch] <tt>an experimental patch for parking the disk (Linux 2.6.14 for 2.6.15 see below)</tt>
**[http://jenster.dyndns.org/files/blk_freeze-01-nodetection-for-2.6.14.patch disk park patch adapted for the t41p model] <tt> kernel 2.6.14 *([http://sourceforge.net/mailarchive/message.php?msg_id=13214288 capability detection disabled], no libata support)</tt>
**[http://jenster.dyndns.org/files/blk_freeze-01-nodetection-for-2.6.15.patch disk park patch adapted for the t41p model] <tt> kernel 2.6.15 *([http://sourceforge.net/mailarchive/message.php?msg_id=13214288 capability detection disabled], no libata support)</tt>
**[http://www.dresco.co.uk/hdaps/hdaps_protect.20060118.patch Latest sata/ide disk protection patch for 2.6.15]
*Userspace daemon
**[http://www.dresco.co.uk/hdaps/hdapsd-20060121-1.c Latest userspace parking daemon]
*GUI monitoring
**[http://www.oakcourt.dyndns.org/projects/khdapsmon/ khdapsmon] <tt>KDE System Tray app similar to the Windows one (also at [http://www.kde-apps.org/content/show.php?content=34134 kde-apps.org])</tt>
**[http://www.dresco.co.uk/hdaps/gnome-hdaps-applet-20060120.tar.gz gnome-hdaps-applet] <tt>visual display of disk protection status in gnome panel</tt>
See [[How to protect the harddisk through APS]] for more information.

====Security & safety====
*[[Script for theft alarm using HDAPS]]

====Tilt monitoring====
*[http://www.mulliner.org/collin/gkibm-acpi.php gkhdaps] <tt>a GKrellM applet displaying tilt data</tt>
*[http://rlove.org/log/2005082203.html gnome-tilt] <tt>a gnome applet showing tilt data</tt>

====Visualisation (of ThinkPad orientation)====
*[http://rlove.org/log/2005082401.html hdaps-gl] <tt>a little app animating a 3D-ThinkPad</tt>
*[https://sourceforge.net/project/showfiles.php?group_id=138242 hdapsgl-applet] <tt> a GNOME applet animating a 3D-ThinkPad</tt>
*[https://sourceforge.net/project/showfiles.php?group_id=138242 wmadhps] <tt>a WindowMaker DockApp animating a 3D-ThinkPad</tt>
*[http://www.cs.cmu.edu/~ecc/gyro.tar.gz OpenGL gyroscope hack] <tt>keeps your display levelled when tilting the ThinkPad</tt>

====Games====
*Use the HDAPS driver as a joystick and experience games like never before. Download [http://icculus.org/neverball/ Neverball] and enable joystick support in {{path|.neverball/neverballrc}}.

=== Interesting links related to this project ===
* [https://lists.sourceforge.net/lists/listinfo/hdaps-devel HDAPS mailinglist and its archive]
* #hdaps channel on irc.freenode.org
* [https://sourceforge.net/projects/hdaps/ hdaps projects] overview of userspace programs using hdaps
* [http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=TPAD-HDFIRM IBM ThinkPads hardware drive firmware site]
* [http://www.paul.sladen.org/thinkpad-r31/accelerometer.html http://www.paul.sladen.org/thinkpad-r31/accelerometer/]
* http://bugs.gentoo.org/show_bug.cgi?id=100167 Gentoo ebuild for hdaps driver and daemon including a initscript

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HDAPS