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@@ -0,0 +1,368 @@
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+#!/sbin/openrc-run
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+# Copyright 1999-2015 Gentoo Foundation
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+# Distributed under the terms of the GNU General Public License v2
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+
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+depend() {
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+ use modules
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+ before checkfs fsck
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+ after dev-settle
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+
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+ if grep -qs ^swap= "${conf_file}" ; then
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+ before swap
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+ fi
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+}
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+
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+# We support multiple dmcrypt instances based on $SVCNAME
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+conf_file="/etc/conf.d/${SVCNAME}"
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+
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+# Get splash helpers if available.
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+if [ -e /sbin/splash-functions.sh ] ; then
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+ . /sbin/splash-functions.sh
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+fi
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+
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+# Setup mappings for an individual target/swap
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+# Note: This relies on variables localized in the main body below.
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+dm_crypt_execute() {
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+ local dev ret mode foo source_dev
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+
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+ if [ -z "${target}" -a -z "${swap}" ] ; then
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+ return
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+ fi
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+
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+ # Set up default values.
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+ : ${dmcrypt_key_timeout:=1}
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+ : ${dmcrypt_max_timeout:=300}
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+ : ${dmcrypt_retries:=5}
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+ : ${wait:=5}
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+
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+ # Handle automatic look up of the source path.
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+ if [ -z "${source}" -a -n "${loop_file}" ] ; then
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+ source=$(losetup --show -f "${loop_file}")
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+ fi
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+ case ${source} in
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+ *=*)
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+ i=0
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+ while [ ${i} -lt ${wait} ]; do
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+ if source_dev="$(blkid -l -t "${source}" -o device)"; then
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+ source="${source_dev}"
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+ break
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+ fi
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+ : $((i += 1))
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+ einfo "waiting for source \"${source}\" for ${target}..."
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+ sleep 1
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+ done
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+ ;;
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+ esac
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+ if [ -z "${source}" ] || [ ! -e "${source}" ] ; then
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+ ewarn "source \"${source}\" for ${target} missing, skipping..."
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+ return
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+ fi
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+
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+ if [ -n "${header}" ] ; then
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+ header_opt="--header=${header}"
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+
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+ i=0
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+ while [ ! -e "${header}" ] && [ ${i} -lt ${wait} ] ; do
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+ : $((i += 1))
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+ einfo "Waiting for header ${header} to appear for ${target} ${i}/${dmcrypt_max_timeout} ..."
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+ sleep 1
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+ done
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+ if [ ${i} -gt ${wait} ] || [ ${i} -eq ${wait} ] ; then
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+ ewarn "Waited ${i} times for header file ${header}. Aborting ${target}."
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+ return
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+ fi
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+ else
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+ header_opt=""
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+ fi
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+
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+ if [ -n "${target}" ] ; then
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+ # let user set options, otherwise leave empty
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+ : ${options:=' '}
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+ elif [ -n "${swap}" ] ; then
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+ if cryptsetup ${header_opt} isLuks ${source} 2>/dev/null ; then
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+ ewarn "The swap you have defined is a LUKS partition. Aborting crypt-swap setup."
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+ return
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+ fi
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+ target=${swap}
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+ # swap contents do not need to be preserved between boots, luks not required.
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+ # suspend2 users should have initramfs's init handling their swap partition either way.
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+ : ${options:='-c aes -h sha1 -d /dev/urandom'}
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+ : ${pre_mount:='mkswap ${dev}'}
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+ fi
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+
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+ if [ -n "${loop_file}" ] ; then
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+ dev="/dev/mapper/${target}"
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+ ebegin " Setting up loop device ${source}"
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+ losetup ${source} ${loop_file}
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+ fi
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+
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+ # cryptsetup:
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+ # open <device> <name> # <device> is $source
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+ # create <name> <device> # <name> is $target
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+ local arg1="create" arg2="${target}" arg3="${source}"
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+ if cryptsetup ${header_opt} isLuks ${source} 2>/dev/null ; then
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+ arg1="open"
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+ arg2="${source}"
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+ arg3="${target}"
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+ fi
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+
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+ # Older versions reported:
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+ # ${target} is active:
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+ # Newer versions report:
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+ # ${target} is active[ and is in use.]
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+ if cryptsetup ${header_opt} status ${target} | grep -E -q ' is active' ; then
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+ einfo "dm-crypt mapping ${target} is already configured"
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+ return
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+ fi
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+ splash svc_input_begin ${SVCNAME} >/dev/null 2>&1
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+
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+ # Handle keys
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+ if [ -n "${key}" ] ; then
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+ read_abort() {
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+ # some colors
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+ local ans savetty resettty
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+ [ -z "${NORMAL}" ] && eval $(eval_ecolors)
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+ einfon " $1? (${WARN}yes${NORMAL}/${GOOD}No${NORMAL}) "
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+ shift
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+ # This is ugly as s**t. But POSIX doesn't provide `read -t`, so
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+ # we end up having to implement our own crap with stty/etc...
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+ savetty=$(stty -g)
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+ resettty='stty ${savetty}; trap - EXIT HUP INT TERM'
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+ trap 'eval "${resettty}"' EXIT HUP INT TERM
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+ stty -icanon
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+ stty min 0 time "$(( $2 * 10 ))"
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+ ans=$(dd count=1 bs=1 2>/dev/null) || ans=''
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+ eval "${resettty}"
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+ if [ -z "${ans}" ] ; then
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+ printf '\r'
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+ else
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+ echo
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+ fi
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+ case ${ans} in
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+ [yY]) return 0;;
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+ *) return 1;;
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+ esac
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+ }
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+
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+ # Notes: sed not used to avoid case where /usr partition is encrypted.
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+ mode=${key##*:} && ( [ "${mode}" = "${key}" ] || [ -z "${mode}" ] ) && mode=reg
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+ key=${key%:*}
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+ case "${mode}" in
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+ gpg|reg)
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+ # handle key on removable device
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+ if [ -n "${remdev}" ] ; then
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+ # temp directory to mount removable device
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+ local mntrem="${RC_SVCDIR}/dm-crypt-remdev.$$"
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+ if [ ! -d "${mntrem}" ] ; then
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+ if ! mkdir -p "${mntrem}" ; then
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+ ewarn "${source} will not be decrypted ..."
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+ einfo "Reason: Unable to create temporary mount point '${mntrem}'"
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+ return
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+ fi
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+ fi
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+ i=0
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+ einfo "Please insert removable device for ${target}"
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+ while [ ${i} -lt ${dmcrypt_max_timeout} ] ; do
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+ foo=""
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+ if mount -n -o ro "${remdev}" "${mntrem}" 2>/dev/null >/dev/null ; then
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+ # keyfile exists?
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+ if [ ! -e "${mntrem}${key}" ] ; then
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+ umount -n "${mntrem}"
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+ rmdir "${mntrem}"
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+ einfo "Cannot find ${key} on removable media."
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+ read_abort "Abort" ${dmcrypt_key_timeout} && return
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+ else
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+ key="${mntrem}${key}"
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+ break
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+ fi
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+ else
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+ [ -e "${remdev}" ] \
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+ && foo="mount failed" \
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+ || foo="mount source not found"
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+ fi
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+ : $((i += 1))
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+ read_abort "Stop waiting after $i attempts (${foo})" -t 1 && return
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+ done
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+ else # keyfile ! on removable device
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+ if [ ! -e "${key}" ] ; then
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+ ewarn "${source} will not be decrypted ..."
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+ einfo "Reason: keyfile ${key} does not exist."
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+ return
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+ fi
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+ fi
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+ ;;
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+ *)
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+ ewarn "${source} will not be decrypted ..."
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+ einfo "Reason: mode ${mode} is invalid."
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+ return
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+ ;;
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+ esac
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+ else
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+ mode=none
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+ fi
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+ ebegin " ${target} using: ${header_opt} ${options} ${arg1} ${arg2} ${arg3}"
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+ if [ "${mode}" = "gpg" ] ; then
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+ : ${gpg_options:='-q -d'}
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+ # gpg available ?
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+ if command -v gpg >/dev/null ; then
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+ i=0
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+ while [ ${i} -lt ${dmcrypt_retries} ] ; do
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+ # paranoid, don't store key in a variable, pipe it so it stays very little in ram unprotected.
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+ # save stdin stdout stderr "values"
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+ timeout ${dmcrypt_max_timeout} gpg ${gpg_options} ${key} 2>/dev/null | \
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+ cryptsetup ${header_opt} --key-file - ${options} ${arg1} ${arg2} ${arg3}
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+ ret=$?
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+ # The timeout command exits 124 when it times out.
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+ [ ${ret} -eq 0 -o ${ret} -eq 124 ] && break
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+ : $(( i += 1 ))
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+ done
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+ eend ${ret} "failure running cryptsetup"
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+ else
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+ ewarn "${source} will not be decrypted ..."
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+ einfo "Reason: cannot find gpg application."
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+ einfo "You have to install app-crypt/gnupg first."
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+ einfo "If you have /usr on its own partition, try copying gpg to /bin ."
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+ fi
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+ else
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+ if [ "${mode}" = "reg" ] ; then
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+ cryptsetup ${header_opt} ${options} -d ${key} ${arg1} ${arg2} ${arg3}
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+ ret=$?
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+ eend ${ret} "failure running cryptsetup"
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+ else
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+ cryptsetup ${header_opt} ${options} ${arg1} ${arg2} ${arg3}
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+ ret=$?
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+ eend ${ret} "failure running cryptsetup"
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+ fi
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+ fi
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+ if [ -d "${mntrem}" ] ; then
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+ umount -n ${mntrem} 2>/dev/null >/dev/null
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+ rmdir ${mntrem} 2>/dev/null >/dev/null
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+ fi
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+ splash svc_input_end ${SVCNAME} >/dev/null 2>&1
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+
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+ if [ ${ret} -ne 0 ] ; then
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+ cryptfs_status=1
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+ else
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+ if [ -n "${pre_mount}" ] ; then
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+ dev="/dev/mapper/${target}"
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+ eval ebegin \"" pre_mount: ${pre_mount}"\"
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+ eval "${pre_mount}" > /dev/null
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+ ewend $? || cryptfs_status=1
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+ fi
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+ fi
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+}
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+
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+# Lookup optional bootparams
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+get_bootparam_val() {
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+ # We're given something like:
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+ # foo=bar=cow
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+ # Return the "bar=cow" part.
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+ case $1 in
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+ *=*)
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+ echo "${1#*=}"
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+ ;;
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+ esac
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+}
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+
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+start() {
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+ local print_header=true cryptfs_status=0
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+ local gpg_options key loop_file target targetline options pre_mount post_mount source swap remdev
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+
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+ local x
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+ for x in $(cat /proc/cmdline) ; do
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+ case "${x}" in
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+ key_timeout=*)
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+ dmcrypt_key_timeout=$(get_bootparam_val "${x}")
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+ ;;
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+ esac
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+ done
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+
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+ while read targetline <&3 ; do
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+ case ${targetline} in
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+ # skip comments and blank lines
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+ ""|"#"*) continue ;;
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+ # skip service-specific openrc configs #377927
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+ rc_*) continue ;;
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+ esac
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+
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+ ${print_header} && ebegin "Setting up dm-crypt mappings"
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+ print_header=false
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+
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+ # check for the start of a new target/swap
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+ case ${targetline} in
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+ target=*|swap=*)
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+ # If we have a target queued up, then execute it
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+ dm_crypt_execute
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+
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+ # Prepare for the next target/swap by resetting variables
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+ unset gpg_options key loop_file target options pre_mount post_mount source swap remdev wait header header_opt
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+ ;;
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+
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+ gpg_options=*|remdev=*|key=*|loop_file=*|options=*|pre_mount=*|post_mount=*|wait=*|source=*|header=*)
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+ if [ -z "${target}${swap}" ] ; then
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+ ewarn "Ignoring setting outside target/swap section: ${targetline}"
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+ continue
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+ fi
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+ ;;
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+
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+ dmcrypt_*=*)
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+ # ignore global options
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+ continue
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+ ;;
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+
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+ *)
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+ ewarn "Skipping invalid line in ${conf_file}: ${targetline}"
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+ ;;
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+ esac
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+
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+ # Queue this setting for the next call to dm_crypt_execute
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+ eval "${targetline}"
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+ done 3< ${conf_file}
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+
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+ # If we have a target queued up, then execute it
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+ dm_crypt_execute
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+
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+ ewend ${cryptfs_status} "Failed to setup dm-crypt devices"
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+}
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+
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+stop() {
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+ local line print_header
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+
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+ # Break down all mappings
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+ print_header=true
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+ grep -E "^(target|swap)=" ${conf_file} | \
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+ while read line ; do
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+ ${print_header} && einfo "Removing dm-crypt mappings"
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+ print_header=false
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+
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+ target= swap=
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+ eval ${line}
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+
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+ [ -n "${swap}" ] && target=${swap}
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+ if [ -z "${target}" ] ; then
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+ ewarn "invalid line in ${conf_file}: ${line}"
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+ continue
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+ fi
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+
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+ ebegin " ${target}"
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+ cryptsetup ${header_opt} remove ${target}
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+ eend $?
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+ done
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+
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+ # Break down loop devices
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+ print_header=true
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+ grep '^source=./dev/loop' ${conf_file} | \
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+ while read line ; do
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+ ${print_header} && einfo "Detaching dm-crypt loop devices"
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+ print_header=false
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+
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+ source=
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+ eval ${line}
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+
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+ ebegin " ${source}"
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+ losetup -d "${source}"
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+ eend $?
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+ done
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+
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+ return 0
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+}
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Sergei Ilinykh