Re: kernel apm code

[David Balazic]

John Fremlin wrote:
> 
>  David Balazic <[e-mail]> writes:
> 
> > The newer version has among other things support for
> > the APM_IOC_REJECT ioctl which is useful for example
> > when implementing "run /sbin/shutdown -h when the power
> > button is pressed".
> >
> > While isn't this merged into the official kernel ?
> 
> The maintainer hasn't the time to do it. He promised me he would in
> February, when I telephone, but hasn't bothered to do anything
> AFAICS. I hacked together the following patch for it a while ago,
> which updated APM_IOC_REJECT for slightly more recent kernels (be
> warned, I think I made some mistakes)
 
It uses the same version number ( 1.15 ) as the "official" apm.c
( at linuxcare.com.au/apm ). I don't think that is a good idea.
Maybe 1.14b ?

>------------------------------------------------------------
> 
> I made a (IMHO) better version called pmpolicy, based on different
> principles. More information is available at
> 
>         http://john.snoop.dk/programs/linux/offbutton/

To implement off-button you only need the APM_IOC_REJECT ioctl and apmd 3.0
and a slight change to the apm_proxy script.
It must be changed to execute "poweroff" and return a value of 1 ( so that
the apmd/kernel/apm-driver reject the event ) in case of "system suspend" event.
The only problem might be synchronization  ( "poweroff" might kill apmd
before is sends the REJECT call to kernel ).

-- 
David Balazic
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"Be excellent to each other." - Bill & Ted
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