#!/bin/sh
# Copyright (C) 2015  Codethink Limited
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

# See strip-device-nodes.configure.help for documentation.

set -eu

case "$STRIP_DEVICE_NODES" in
    yes|Yes|YES|true|True|TRUE|1)
        run=yes ;;
    *)
        run=no ;;
esac

if [ "$run" = "yes" ]; then
    echo "Stripping device nodes"

    root="$1"

    # Be VERY CAREFUL because this runs in the host system as root.
    if [ "$(readlink -f $1)" = / ]; then
        echo "Refusing to remove files from /, as a safety precausion."
        exit 1
    fi

    rm -R "$1"/dev/*
fi