Re: something chmod'ing /dev/null

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On Wed, 2010-11-17 at 10:45 -0800, Joe Pruett wrote:
> 
> On 11/17/2010 10:35 AM, Robert Heller wrote:
> > At Wed, 17 Nov 2010 10:16:51 -0800 CentOS mailing list <centos@xxxxxxxxxx> wrote:
> >
> >> it looks like one of the recent updates will sometimes chmod /dev/null
> >> to 600.  out of 20 machines i've updated, 3 of them had the odd
> >> /dev/null perms afterwards.  i haven't tried to identify what it doing
> >> it yet, but wanted to give a heads up to others that might start seeing
> >> weird behavior.
> > Look in /etc/udev/rules.d/50-udev.rules.  My copy has the line:
> >
> > KERNEL=="null",                 MODE="0666", OPTIONS="last_rule"
> >
> > You haven't managed to mess with this rule?  
> no changes to udev rules.  and this happens immediately after the update
> is run, no reboot required.  what is weird is that the config on the
> systems i run are pretty close to each other, so why only a few got hit
> by this is odd.  i had one happen yesterday and thought i had just done
> something stupid, but then more popped up today immediately after doing
> updates, so that is why the warning.
----
Ok now for some work...  Gather up a list of your RPMs you updated and
well check them all for /dev/null changes for te culprit.

[ethan@midnight ~]$ rpm -q --scripts kernel-rt
postinstall scriptlet (using /bin/sh):
/sbin/new-kernel-pkg --package kernel-rt --banner "EM2Grid Enterprise
Linux (realtime)" --mkinitrd --depmod --install 2.6.24.7-149.el5rt ||
exit $?
preuninstall scriptlet (using /bin/sh):
/sbin/new-kernel-pkg --rminitrd --rmmoddep --remove 2.6.24.7-149.el5rt
|| exit $?
postinstall scriptlet (using /bin/sh):
/sbin/new-kernel-pkg --package kernel-rt --banner "EM2Grid Enterprise
Linux (realtime)" --mkinitrd --depmod --install 2.6.24.7-161.el5rt ||
exit $?
preuninstall scriptlet (using /bin/sh):
/sbin/new-kernel-pkg --rminitrd --rmmoddep --remove 2.6.24.7-161.el5rt
|| exit $?


John

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