PREUN

/bin/sh

if [ "$1" = "0" ]; then
 echo undo prelinking, it might take some time
 /usr/sbin/prelink -ua 2> /dev/null
fi

POSTIN

/bin/sh

/usr/share/rpm-helper/create-file prelink $1 /var/lib/misc/prelink.full root root 644 
/usr/share/rpm-helper/create-file prelink $1 /var/lib/misc/prelink.force root root 644 
/usr/share/rpm-helper/create-file prelink $1 /var/log/prelink.log root root 600