[ANNOUNCE] udev 131 release

[ANNOUNCE] udev 131 release

[Kay Sievers]

Here comes a new udev version. Thanks to all who have contributed to
this release.

The tarball can be found here:
 ftp://ftp.kernel.org/pub/linux/utils/kernel/hotplug/

The development repository can be found here:
 http://www.kernel.org/git/?p=linux/hotplug/udev.git;a=summary

The ChangeLog can be found here:
 http://www.kernel.org/git/?p=linux/hotplug/udev.git;a=blob;hb=HEAD;f=ChangeLog

udev 131
====
Bugfixes. (And maybe new bugs. :))

The rule matching engine got converted from a rule list to a token
array which reduced the in-memory rules representation of a full
featured distro with thousands of udev rules from 1.2MB to 0.12 MB.
Limits like 5 ENV and ATTR matches, and one single instance for most
other keys per rule are gone.

The NAME assignment is no longer special cased. If later rules assign
a NAME value again, the former value will be overwritten. As usual
for most other keys, the NAME value can be protected by doing a final
assignment with NAME:="<value>".

All udev code now uses libudev, which is also exported. The library
is still under development, marked as experimental, and its interface
may change as long as the DeviceKit integration is not finished.

Many thanks to Alan Jenkins for his continuous help, and finding and
optimizing some of the computing expensive parts.

Re: [ANNOUNCE] udev 131 release

[Marco d'Itri]

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On Nov 07, Kay Sievers <kay.sievers@vrfy.org> wrote:

> The NAME assignment is no longer special cased. If later rules assign
> a NAME value again, the former value will be overwritten. As usual
> for most other keys, the NAME value can be protected by doing a final
> assignment with NAME:="<value>".
While I like the consistency, I see the potential for user and
package-specific rules to break spectacularly...

-- 
ciao,
Marco

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Re: [ANNOUNCE] udev 131 release

[Scott James Remnant]

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0On Fri, 2008-11-07 at 10:39 +0100, Marco d'Itri wrote:

> On Nov 07, Kay Sievers <kay.sievers@vrfy.org> wrote:
> 
> > The NAME assignment is no longer special cased. If later rules assign
> > a NAME value again, the former value will be overwritten. As usual
> > for most other keys, the NAME value can be protected by doing a final
> > assignment with NAME:="<value>".
> While I like the consistency, I see the potential for user and
> package-specific rules to break spectacularly...
> 
In theory, the changes are largely backwards compatible.

I've already grepped through the Ubuntu source, and didn't find anything
relying on the old behaviour.

In fact, I found a few things that will only work with the *new*
behaviour ;)

Scott
-- 
Scott James Remnant
scott@canonical.com

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