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#!/bin/sh
# arg 1: the new package version
# arg 2: the old package version
post_upgrade() {
# one time stuff for md5sum issue with older pacman versions
if [ "$(vercmp $2 3.0.2)" -lt 0 ]; then
_resetbackups
fi
}
_resetbackups() {
echo ">>> Performing one-time reset of NoUpgrade md5sums. After this reset"
echo ">>> you are able to remove all NoUpgrade lines of already protected"
echo ">>> files from pacman.conf."
echo ">>>"
# path variables
pacconf="/etc/pacman.conf"
dbpath="/var/lib/pacman/local"
# get a list of NoUpgrade files from the user's pacman.conf
echo ">>> Retrieving pacman.conf NoUpgrade list..."
config=$(grep "^NoUpgrade" $pacconf | cut -d'=' -f2)
# add the standard list of files, even if they are already above
config="$config \
etc/passwd etc/group etc/shadow etc/sudoers \
etc/fstab etc/raidtab etc/ld.so.conf \
etc/rc.conf etc/rc.local \
etc/modprobe.conf etc/modules.conf \
etc/lilo.conf boot/grub/menu.lst"
# blank md5sum for use in sed expression
zeroes='00000000000000000000000000000000'
for file in $config; do
echo ">>> -> finding owner of /$file..."
line=$(LC_ALL=C LANG=C pacman -Qo /$file 2>/dev/null)
# if file is owned by a package, go find its incorrectly stored sum
if [ ! -z "$line" ]; then
# get the name and version of the package owning file
name=$(echo $line | awk '{print $5}')
version=$(echo $line | awk '{print $6}')
# set the path to the backup array holding the md5sum
path="$dbpath/$name-$version/files"
# run a sed on the path to reset the line containing $file
# NOTE: literal tab characters in sed expression after $file
echo ">>> -> resetting sum of /$file..."
sed -i "s#$file [0-9a-fA-F]*#$file $zeroes#" $path
else
echo ">>> -> $file is unowned."
fi
done
}
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