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# vim:ft=sh:
# This file contains common functionality for all postgresql server
# package maintainer scripts.
# Most functions accept the version number as first argument and as second
# optional argument a spelling variant of the version number used in package
# names that can be used for flavored package builds.
# arguments: version master package [package package]
_link_manpages() {
VERSION="$1"
NAME="$2"
MANS=$(unset GREP_OPTIONS; dpkg -L $3 $4 $5 2>/dev/null | grep -E "postgresql/$VERSION/man/.*\\.[1-9](\\.gz)?\$" | grep -v "$NAME") || true
[ -n "$MANS" ] || return 0
SLAVES=$(for man in $MANS; do TARGET=$(echo $man | sed -e "s/postgresql\/$VERSION\/man/man/"); echo -n " --slave $TARGET ${man##*/} $man"; done)
# user might have removed the directories, allow u-a to succeed
mkdir -p /usr/share/man/man1 /usr/share/man/man3 /usr/share/man/man7
section=$(echo "$NAME" | sed -e 's/.*\.\(.*\)\..*/man\1/')
case $VERSION in
[89]*) priority=$(echo "$VERSION" | tr -cd 0-9) ;;
*) priority="${VERSION}0" ;;
esac
update-alternatives --install /usr/share/man/$section/$NAME \
$NAME /usr/share/postgresql/$VERSION/man/$section/$NAME \
$priority $SLAVES
}
# Merge postmaster.1.gz (removed in PG16) alternatives with psql.1.gz (248)
relink_postmaster_manpages ()
{
update-alternatives --list postmaster.1.gz >/dev/null 2>&1 || return 0
echo "Merging postmaster.1.gz alternatives into psql.1.gz link group ..."
update-alternatives --remove-all postmaster.1.gz
for dir in /usr/lib/postgresql/*; do
if test -x $dir/bin/psql; then
v=${dir#/usr/lib/postgresql/}
_link_manpages $v psql.1.gz postgresql-client-$v postgresql-$v postgresql-contrib-$v
fi
done
}
# arguments: version master
_unlink_manpages() {
VERSION="$1"
NAME="$2"
# user might have removed the directories, allow u-a to succeed
mkdir -p /usr/share/man/man1 /usr/share/man/man3 /usr/share/man/man7
section=$(echo "$NAME" | sed -e 's/.*\.\(.*\)\..*/man\1/')
update-alternatives --remove $NAME /usr/share/postgresql/$VERSION/man/$section/$NAME
rmdir --ignore-fail-on-non-empty -p /usr/share/man/man1 /usr/share/man/man3 /usr/share/man/man7
}
_remove_tsearch() {
VERSION="$1"
if [ -e /usr/share/postgresql/$VERSION/tsearch_data ]; then
find /usr/share/postgresql/$VERSION/tsearch_data -type l \( -name '*.dict' -o -name '*.affix' \) -exec rm '{}' \;
fi
}
# Determine and set system's default locale; we do not want to trust the
# environment here, as ssh and sudo both propagate the user's locale from
# potentially a remote host, and that might not even exist; also, we want to be
# predictable. /etc/default/locale overrides /etc/environment. Note that
# /etc/environment is not a shell script, so we must be careful with parsing.
set_system_locale() {
loc_vars="LANG LANGUAGE LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY LC_MESSAGES LC_PAPER LC_NAME LC_ADDRESS LC_TELEPHONE LC_MEASUREMENT LC_IDENTIFICATION LC_ALL"
unset $loc_vars
LANG="C.UTF-8" # fallback locale if nothing is configured explicitly
for v in $loc_vars; do
unset val
val=`pam_getenv -l $v` || true
[ -z "$val" ] || export $v="$val"
done
[ -e /etc/default/locale ] && . /etc/default/locale || true
export $loc_vars
}
# arguments: <major version> <most recently configured package version>
configure_version() {
VERSION="$1"
PKG_VER="${3:-$1}"
# Create a main cluster for given version ($VERSION) if no cluster already exists
# for that version and we are installing from scratch.
[ "$VERSION" ] || { echo "Error: configure_version: need version parameter" >&2; exit 1; }
if [ ! -d "/etc/postgresql/$VERSION" ] || [ -z "$(ls /etc/postgresql/$VERSION)" ] || \
[ -z "$(ls /etc/postgresql/$VERSION/*/postgresql.conf 2>/dev/null)" ]; then
# skip creating the main cluster when this is not the first install, or
# when explicitly disabled ($create is on/off/"")
create=$(pg_conftool /etc/postgresql-common/createcluster.conf show -bs create_main_cluster || :)
if [ -z "$2" ] && [ "$create" != "off" ]; then
set_system_locale
pg_createcluster -u postgres --no-status $VERSION main ||
echo "Error: could not create default cluster. Please create it manually with
pg_createcluster $VERSION main --start
or a similar command (see 'man pg_createcluster')." >&2
fi
fi
relink_postmaster_manpages
_link_manpages "$VERSION" psql.1.gz "postgresql-client-$PKG_VER" "postgresql-$PKG_VER" "postgresql-contrib-$PKG_VER"
# check if our catalog version changed
postinst_check_catversion "$VERSION"
# done with debconf
db_stop
# update list of packages not to apt-autoremove
/usr/share/postgresql-common/pg_updateaptconfig
# reload systemd to let the generator pick up the new unit
if [ -d /run/systemd/system ]; then
systemctl daemon-reload
fi
invoke-rc.d postgresql start $VERSION # systemd: argument ignored, starts all versions
}
stop_version() {
VERSION="$1"
if [ -d /run/systemd/system ]; then
# cannot use invoke-rc.d here because jessie's version doesn't like patterns
deb-systemd-invoke stop "postgresql@$VERSION-*"
else
invoke-rc.d postgresql stop $VERSION
fi
}
remove_version() {
VERSION="$1"
PKG_VER="${2:-$1}"
# we still want to retain the alternatives for the client packages
_link_manpages "$VERSION" psql.1.gz "postgresql-client-$PKG_VER"
_remove_tsearch "$VERSION"
# update list of packages not to apt-autoremove
/usr/share/postgresql-common/pg_updateaptconfig
}
configure_client_version() {
VERSION="$1"
PKG_VER="${3:-$1}"
relink_postmaster_manpages
_link_manpages "$VERSION" psql.1.gz "postgresql-client-$PKG_VER" "postgresql-$PKG_VER" "postgresql-contrib-$PKG_VER"
}
remove_client_version() {
VERSION="$1"
_unlink_manpages "$VERSION" psql.1.gz
}
configure_contrib_version() {
VERSION="$1"
PKG_VER="${3:-$1}"
relink_postmaster_manpages
_link_manpages "$VERSION" psql.1.gz "postgresql-client-$PKG_VER" "postgresql-$PKG_VER" "postgresql-contrib-$PKG_VER"
}
remove_contrib_version() {
VERSION="$1"
PKG_VER="${2:-$1}"
# we still want to retain the alternatives for the server packages
_link_manpages "$VERSION" psql.1.gz "postgresql-client-$1" "postgresql-$PKG_VER"
}
configure_doc_version() {
VERSION="$1"
PKG_VER="${3:-$1}"
_link_manpages "$VERSION" SPI_connect.3.gz "postgresql-doc-$PKG_VER"
}
remove_doc_version() {
VERSION="$1"
_unlink_manpages "$VERSION" SPI_connect.3.gz
}
# Compare the catalog version number of the installed package and the new
# package. When differing, check if any clusters present are using the old
# catalog version. If so, copy a minimal set of files from the old package to
# /var/tmp to enable pg_upgrade to upgrade to the new version.
preinst_check_catversion()
{
MAJOR_VER="$1"
NEW_CATVERSION="$2"
case $NEW_CATVERSION in
*CATVERSION*) echo "BUG: override_dh_installdeb failed to set CATVERSION" >&2
return ;;
esac
CATFILE="/usr/share/postgresql/$MAJOR_VER/catalog_version"
[ -f "$CATFILE" ] || return 0 # file introduced in 9.6
OLD_CATVERSION="$(cat $CATFILE)"
[ -z "$OLD_CATVERSION" ] && return
[ "$OLD_CATVERSION" = "$NEW_CATVERSION" ] && return # no change, nothing to do
PGCONTROLDATA="/usr/lib/postgresql/$MAJOR_VER/bin/pg_controldata"
[ -x "$PGCONTROLDATA" ] || return 0
echo "PostgreSQL $MAJOR_VER catalog version number changed from $OLD_CATVERSION to $NEW_CATVERSION, checking for clusters using the old version ..."
pg_lsclusters -h | \
while read version cluster port status owner pgdata logfile; do
[ "$version" = "$MAJOR_VER" ] || continue
[ -d "$pgdata" ] || continue
DB_CATVERSION=$(LC_ALL=C $PGCONTROLDATA $pgdata 2>/dev/null | sed -ne 's/^Catalog version number: *\([0-9]\+\)/\1/p')
if [ "$DB_CATVERSION" = "$OLD_CATVERSION" ]; then
echo "Cluster $MAJOR_VER/$cluster is using catalog version $DB_CATVERSION"
VARTMPDIR="/var/tmp/postgresql-$MAJOR_VER-$OLD_CATVERSION"
if [ ! -d "$VARTMPDIR" ]; then
echo "Saving binaries for PostgreSQL $MAJOR_VER catalog version $OLD_CATVERSION in $VARTMPDIR ..."
mkdir "$VARTMPDIR" # will fail&exit if (potentially rogue) file exists
cp -a /usr/lib/postgresql/$MAJOR_VER/bin /usr/lib/postgresql/$MAJOR_VER/lib "$VARTMPDIR"
fi
fi
done
}
postinst_check_catversion()
{
MAJOR_VER="$1"
CATFILE="/usr/share/postgresql/$MAJOR_VER/catalog_version"
[ -f "$CATFILE" ] || return 0 # file introduced in 9.6
NEW_CATVERSION="$(cat $CATFILE)"
[ -z "$NEW_CATVERSION" ] && return
PGCONTROLDATA="/usr/lib/postgresql/$MAJOR_VER/bin/pg_controldata"
[ -x "$PGCONTROLDATA" ] || return 0
for cluster in $(pg_lsclusters -h | awk "/^$MAJOR_VER / { print \$2 }"); do
pgdata=$(pg_conftool -s $MAJOR_VER $cluster show data_directory) || continue
[ -d "$pgdata" ] || continue
DB_CATVERSION=$(LC_ALL=C $PGCONTROLDATA $pgdata | sed -ne 's/^Catalog version number: *\([0-9]\+\)/\1/p')
[ -z "$DB_CATVERSION" ] && continue
[ "$DB_CATVERSION" = "$NEW_CATVERSION" ] && continue
VARTMPDIR="/var/tmp/postgresql-$MAJOR_VER-$DB_CATVERSION"
[ -d "$VARTMPDIR" ] || continue
[ -O "$VARTMPDIR" ] || continue # test if owned by root
# tell the user about it
cat <<-EOF
Cluster $MAJOR_VER $cluster needs upgrading due to catalog version change:
pg_renamecluster ${MAJOR_VER} ${cluster} ${cluster}.old
pg_upgradecluster ${MAJOR_VER} ${cluster}.old --rename ${cluster} -m upgrade -v ${MAJOR_VER} --old-bindir=${VARTMPDIR}/bin
pg_dropcluster ${MAJOR_VER} ${cluster}.old
rm -rf ${VARTMPDIR}
EOF
db_fset postgresql-common/catversion-bump seen false
db_subst postgresql-common/catversion-bump version $MAJOR_VER
db_subst postgresql-common/catversion-bump cluster $cluster
db_subst postgresql-common/catversion-bump db_catversion $DB_CATVERSION
db_subst postgresql-common/catversion-bump new_catversion $NEW_CATVERSION
db_subst postgresql-common/catversion-bump vartmpdir $VARTMPDIR
db_input high postgresql-common/catversion-bump || true
db_go || true
done
}
# start debconf if we are in the server's postinst (can't run from a function)
if [ "${DPKG_MAINTSCRIPT_NAME:-}" = "postinst" ] && [ "$1" = "configure" ]; then
case $DPKG_MAINTSCRIPT_PACKAGE in
postgresql-[89].?|postgresql-[1-9]?|postgresql-[1-9]???) # -9.6 -15 -15ee
. /usr/share/debconf/confmodule
;;
esac
fi