Hotplug-Perl?

Hotplug-Perl?

[raid517]

Hi, are you guys aware of hotplug-perl? 
http://opensource.idealcorp.com/hotplug-perl/ This seems like a very 
promising improvement on the original hotplug and promises a significant 
speed enhancement. Would anyone consider including it as part of Udev? 
Is this even possible?

GJ


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Re: Hotplug-Perl?

[Kay Sievers]

On Mon, Oct 17, 2005 at 10:20:05PM +0000, raid517 wrote:
> Hi, are you guys aware of hotplug-perl? 
> http://opensource.idealcorp.com/hotplug-perl/ This seems like a very 
> promising improvement on the original hotplug and promises a significant 
> speed enhancement. Would anyone consider including it as part of Udev? 
> Is this even possible?

This is no longer needed. The whole "hotplug" package is almost dead, as nobody
needs to parse *.map files these days to load a module. The kernel exports
the MODALIAS string in sysfs and the event environment, which can be
natively handled by modprobe. No need for _any_ magic script.
The remaining part of the "hotplug" package is mostly converted to udev
rules. We are currently working on getting rid of the coldplug *.rc scripts
as well.

Kay


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Re: Hotplug-Perl?

[Olivier Blin]

Kay Sievers <kay.sievers@vrfy.org> writes:

> This is no longer needed. The whole "hotplug" package is almost dead, as nobody
> needs to parse *.map files these days to load a module. The kernel exports
> the MODALIAS string in sysfs and the event environment, which can be
> natively handled by modprobe. No need for _any_ magic script.

This map feature is still appreciated to detect PTP cameras and
scanners for example. Module loading isn't required for these devices,
but a script may have to be run to alert desktop applications.

-- 
Olivier Blin
Mandriva



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Re: Hotplug-Perl?

[Marco d'Itri]

On Oct 27, Olivier Blin <oblin@mandriva.com> wrote:

> This map feature is still appreciated to detect PTP cameras and
> scanners for example. Module loading isn't required for these devices,
> but a script may have to be run to alert desktop applications.
So what? Look at the debian package for e.g. libsane, eciadsl or
libgphoto. There is a script which generates a rules file with the RUN
rules needed for all devices supported.
There is no reason at all to use maps.

-- 
ciao,
Marco


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Re: Hotplug-Perl?

[Olivier Blin]

md@Linux.IT (Marco d'Itri) writes:

> On Oct 27, Olivier Blin <oblin@mandriva.com> wrote:
>
>> This map feature is still appreciated to detect PTP cameras and
>> scanners for example. Module loading isn't required for these devices,
>> but a script may have to be run to alert desktop applications.
> So what? Look at the debian package for e.g. libsane, eciadsl or
> libgphoto. There is a script which generates a rules file with the RUN
> rules needed for all devices supported.

I did the same for Mandriva, see
http://cvs.mandriva.com/cgi-bin/cvsweb.cgi/SPECS/udev/udev_import_usermap?rev=1.5&content-type=text/x-cvsweb-markup

> There is no reason at all to use maps.

No, but we should provide a tool to convert maps in the udev package.
The script you use in Debian is quite similar to mine, but it's
duplicated among all your packages.

-- 
Olivier Blin
Mandriva



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Re: Hotplug-Perl?

[Marco d'Itri]

On Oct 27, Olivier Blin <oblin@mandriva.com> wrote:

> No, but we should provide a tool to convert maps in the udev package.
No, we should tell upstream maintainers that it's about time they fix
their packages to properly support udev.

> The script you use in Debian is quite similar to mine, but it's
> duplicated among all your packages.
Because they are different packages with different needs and providing
the data about the devices they support in different formats...

-- 
ciao,
Marco


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Re: Hotplug-Perl?

[Olivier Blin]

md@Linux.IT (Marco d'Itri) writes:

> On Oct 27, Olivier Blin <oblin@mandriva.com> wrote:
>
>> No, but we should provide a tool to convert maps in the udev package.
> No, we should tell upstream maintainers that it's about time they fix
> their packages to properly support udev.

This does not prevent the udev team to provide a tool to help upstream
maintainers.

>> The script you use in Debian is quite similar to mine, but it's
>> duplicated among all your packages.
> Because they are different packages with different needs and providing
> the data about the devices they support in different formats...

It's not much work to provide a generic tool that handles that.
I think it's really worth the maintainance cost needed to port other
packages.

-- 
Olivier Blin
Mandriva



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Re: Hotplug-Perl?

[Kay Sievers]

On Thu, Oct 27, 2005 at 12:03:33PM +0200, Olivier Blin wrote:
> Kay Sievers <kay.sievers@vrfy.org> writes:
> 
> > This is no longer needed. The whole "hotplug" package is almost dead, as nobody
> > needs to parse *.map files these days to load a module. The kernel exports
> > the MODALIAS string in sysfs and the event environment, which can be
> > natively handled by modprobe. No need for _any_ magic script.
> 
> This map feature is still appreciated to detect PTP cameras and
> scanners for example. Module loading isn't required for these devices,
> but a script may have to be run to alert desktop applications.

That is what HAL is used for today. You really want to do more than
running a "notification program". HAL has all the data for scanners
and cameras available along with all the other device properties,
userspace is interested in.

Kay


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