diff options
Diffstat (limited to 'debian/postinst')
| -rw-r--r-- | debian/postinst | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/debian/postinst b/debian/postinst new file mode 100644 index 0000000..4ea6a18 --- /dev/null +++ b/debian/postinst @@ -0,0 +1,101 @@ +#!/bin/sh +set -e + +catdir=/var/cache/man + +ensure_catdir () { + if [ ! -d $catdir ]; then + # Make sure the cat directory exists. + install -d -o man -g man -m 0755 $catdir + fi +} + +run_mandb () { + if [ ! -e /var/lib/man-db/auto-update ]; then + echo "Not building database; man-db/auto-update is not 'true'." >&2 + return 0 + fi + # shellcheck disable=SC3043 + local message="$1" + shift + [ "$message" ] && echo "$message" >&2 + # start-stop-daemon isn't available when running from debootstrap. + if command -v setpriv >/dev/null; then + setpriv --reuid man --regid man --init-groups -- /usr/bin/mandb "$@" || true + else + # runuser isn't ideal here, because it starts a PAM session. + # However, setpriv is only available on Linux. + runuser -u man -- /usr/bin/mandb "$@" || true + fi +} + +if [ "$1" = triggered ]; then + ensure_catdir + # We don't print a status message here, as dpkg already said + # "Processing triggers for man-db ...". + run_mandb "" -pq + exit 0 +fi + +# shellcheck disable=SC1091 +. /usr/share/debconf/confmodule +db_version 2.0 + +[ "$1" = configure ] || exit 0 + +maybesetuid='man mandb' + +db_get man-db/install-setuid + +if [ "$RET" = true ]; then + # man and mandb are to be installed setuid man. + owner=man:man + mode=6755 +else + # man and mandb are not to be installed setuid. + owner=root:root + mode=0755 +fi + +for x in $maybesetuid; do + # No statoverrides available or none exist for us ... + if ! dpkg-statoverride --list "/usr/bin/$x" >/dev/null; then + chown $owner "/usr/bin/$x" || true + chmod $mode "/usr/bin/$x" + fi +done + +ensure_catdir + +# debconf forms the interface used to suppress man-db updates during +# automatic package builds (see https://bugs.debian.org/554914), but we +# cache that value in the file system to avoid having to use debconf when +# processing triggers. +db_get man-db/auto-update +if [ "$RET" = true ]; then + touch /var/lib/man-db/auto-update +else + rm -f /var/lib/man-db/auto-update +fi + +build_db=0 + +if [ ! -f $catdir/index.db ]; then + # Build the database from scratch on fresh installs. + build_db=1 +fi + +if [ $build_db -eq 1 ]; then + # Chances are we're being run from debootstrap, which will have problems + # if mandb runs backgrounded for too long (bug #100616). + run_mandb "Building database of manual pages ..." -cq +else + # Otherwise, just update the database in the foreground. It's unlikely + # to take very long, and configuration needs to cover everything that + # happens when we're triggered. + run_mandb "Updating database of manual pages ..." -pq +fi + +#DEBHELPER# + +exit 0 |