freebsd-skq/etc/rc.d/geli
Ben Woods 217df2da08 geli attach multiple providers
Allow attaching of multiple geli providers at once if they use same
passphrase and keyfiles.

This is helpful when the providers being attached are not used for boot,
and therefore the existing code to first try the cached password when
tasting the providers during boot does not apply.

Multiple providers with the same passphrase and keyfiles can be attached
at the same time during system start-up by adding the following to
rc.conf:
  geli_groups="storage backup"
  geli_storage_flags="-k /etc/geli/storage.keys"
  geli_storage_devices="ada0 ada1"
  geli_backup_flags="-j /etc/geli/backup.passfile -k /etc/geli/backup.keys"
  geli_backup_devices="ada2 ada3"

Reviewed by:	wblock, delphij, jilles
Approved by:	sobomax (src), bcr (doc)
Differential Revision:	https://reviews.freebsd.org/D12644
2018-06-26 18:07:16 +00:00

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#!/bin/sh
#
# Copyright (c) 2005 Pawel Jakub Dawidek <pjd@FreeBSD.org>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD$
#
# PROVIDE: disks
# KEYWORD: nojail
. /etc/rc.subr
name="geli"
desc="GELI disk encryption"
start_precmd='[ -n "$(geli_make_list)" -o -n "${geli_groups}" ]'
start_cmd="geli_start"
stop_cmd="geli_stop"
required_modules="geom_eli:g_eli"
geli_start()
{
devices=`geli_make_list`
if [ -z "${geli_tries}" ]; then
if [ -n "${geli_attach_attempts}" ]; then
# Compatibility with rc.d/gbde.
geli_tries=${geli_attach_attempts}
else
geli_tries=`${SYSCTL_N} kern.geom.eli.tries`
fi
fi
for provider in ${devices}; do
provider_=`ltr ${provider} '/-' '_'`
eval "flags=\${geli_${provider_}_flags}"
if [ -z "${flags}" ]; then
flags=${geli_default_flags}
fi
if [ -e "/dev/${provider}" -a ! -e "/dev/${provider}.eli" ]; then
echo "Configuring Disk Encryption for ${provider}."
count=1
while [ ${count} -le ${geli_tries} ]; do
geli attach ${flags} ${provider}
if [ -e "/dev/${provider}.eli" ]; then
break
fi
echo "Attach failed; attempt ${count} of ${geli_tries}."
count=$((count+1))
done
fi
done
for group in ${geli_groups}; do
group_=`ltr ${group} '/-' '_'`
eval "flags=\${geli_${group_}_flags}"
if [ -z "${flags}" ]; then
flags=${geli_default_flags}
fi
eval "providers=\${geli_${group_}_devices}"
if [ -z "${providers}" ]; then
echo "No devices listed in geli group ${group}."
continue
fi
if [ -e "/dev/${providers%% *}" -a ! -e "/dev/${providers%% *}.eli" ]; then
echo "Configuring Disk Encryption for geli group ${group}, containing ${providers}."
count=1
while [ ${count} -le ${geli_tries} ]; do
geli attach ${flags} ${providers}
if [ -e "/dev/${providers%% *}.eli" ]; then
break
fi
echo "Attach failed; attempt ${count} of ${geli_tries}."
count=$((count+1))
done
fi
done
}
geli_stop()
{
devices=`geli_make_list`
for group in ${geli_groups}; do
group_=`ltr ${group} '/-' '_'`
eval "providers=\${geli_${group_}_devices}"
devices="${devices} ${providers}"
done
for provider in ${devices}; do
if [ -e "/dev/${provider}.eli" ]; then
umount "/dev/${provider}.eli" 2>/dev/null
geli detach "${provider}"
fi
done
}
load_rc_config $name
run_rc_command "$1"