#!/bin/bash
#
# Run a system upgrade.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License along with this program.  If not, see
# <http://www.gnu.org/licenses/>.

# Parameters
ACTION="$1"
BASENAME="`basename $0`"

# Set sudo config
if [ "`whoami`" != 'root' ]; then
  sudo="sudo"
fi

# Syntax
if [ -z "$ACTION" ]; then
  echo "usage: $BASENAME <start|stop>"
  exit 1
elif [ "$ACTION" != "start" ] && [ "$ACTION" != "stop" ]; then
  echo "options must be either 'start' or 'stop'"
  exit 1
fi

# Iterate
grep -v '#' /etc/crypttab | awk '{ print $1 }' | while read volume; do
  $sudo cryptdisks_${ACTION} $volume
done