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#! /bin/sh
get_old_bins() {
# Look for existing postgresql binaries, for the previous release, and
# copy them into a safe location, so that they will be preserved when
# postgresql is replaced by a new release.
if [ ! -d /usr/lib/postgresql/dumpall/$1 ]
then
install -d /usr/lib/postgresql/dumpall/$1
fi
cp /usr/lib/postgresql/lib/libpq.so.1.* /usr/lib/postgresql/dumpall/$1 &&
( cd /usr/lib/postgresql/dumpall/$1
ln -sf libpq.so.1.* libpq.so.1
ln -sf libpq.so.1 libpq.so )
}
SHELL=/bin/sh
current=%PG_VERSION%
lastinstall=`echo $2 | cut -d\- -f1 | cut -d. -f1-2`
operation=$1
if [ -r /etc/postgresql/postgresql.env ]
then
set -a
. /etc/postgresql/postgresql.env
set +a
fi
echo
if [ -d ${PGDATA:=/var/postgres/data} ]
then
installed=`cat ${PGDATA}/PG_VERSION 2>/dev/null`
if [ -n "${installed}" ]
then
if [ A"${installed}" != A${current} ]
then
# This is where we should end up for an existing Debian package that
# conflicts with this one and for a non-Debian installation that
# happens to be in our standard location
if [ A"${lastinstall}" = A${installed} ]
then
get_old_bins ${installed}
fi
fi
fi
else
# there was no database where we are going to put the new one,
# but the executables of an older package might be left around
# and might be needed to do a dump
if [ -d /usr/lib/postgresql/bin -a "$1" != upgrade ]
then
get_old_bins unknown
fi
fi
#DEBHELPER#
exit 0
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