+++ /dev/null
-#!/sbin/runscript
-# Copyright 1999-2012 Gentoo Foundation
-# Distributed under the terms of the GNU General Public License v2
-# $Header: /var/cvsroot/gentoo-x86/sys-fs/cryptsetup/files/dmcrypt.rc,v 1.4 2012/05/11 08:33:01 vapier Exp $
-
-depend() {
- before checkfs fsck
-}
-
-# We support multiple dmcrypt instances based on $SVCNAME
-execute_hook="dm_crypt_execute_dmcrypt"
-# XXX: Should we drop this ?
-# execute_hook="dm_crypt_execute_localmount"
-conf_file="/etc/conf.d/${SVCNAME}"
-
-# Get splash helpers if available.
-if [ -e /sbin/splash-functions.sh ] ; then
- . /sbin/splash-functions.sh
-fi
-
-# Setup mappings for an individual target/swap
-# Note: This relies on variables localized in the main body below.
-dm_crypt_execute_dmcrypt() {
- local dev ret mode foo
-
- if [ -n "${target}" ] ; then
- # let user set options, otherwise leave empty
- : ${options:=' '}
- elif [ -n "${swap}" ] ; then
- if cryptsetup isLuks ${source} 2>/dev/null ; then
- ewarn "The swap you have defined is a LUKS partition. Aborting crypt-swap setup."
- return
- fi
- target=${swap}
- # swap contents do not need to be preserved between boots, luks not required.
- # suspend2 users should have initramfs's init handling their swap partition either way.
- : ${options:='-c aes -h sha1 -d /dev/urandom'}
- : ${pre_mount:='mkswap ${dev}'}
- else
- return
- fi
- if [ -z "${source}" ] && [ ! -e "${source}" ] ; then
- ewarn "source \"${source}\" for ${target} missing, skipping..."
- return
- fi
-
- if [ -n "${loop_file}" ] ; then
- dev="/dev/mapper/${target}"
- ebegin " Setting up loop device ${source}"
- losetup ${source} ${loop_file}
- fi
-
- # cryptsetup:
- # luksOpen <device> <name> # <device> is $source
- # create <name> <device> # <name> is $target
- local arg1="create" arg2="${target}" arg3="${source}" luks=0
-
- cryptsetup isLuks ${source} 2>/dev/null && { arg1="luksOpen"; arg2="${source}"; arg3="${target}"; luks=1; }
-
- # Older versions reported:
- # ${target} is active:
- # Newer versions report:
- # ${target} is active[ and is in use.]
- if cryptsetup status ${target} | egrep -q ' is active' ; then
- einfo "dm-crypt mapping ${target} is already configured"
- return
- fi
- splash svc_input_begin ${SVCNAME} >/dev/null 2>&1
-
- # Handle keys
- if [ -n "${key}" ] ; then
- read_abort() {
- # some colors
- local ans savetty resettty
- [ -z "${NORMAL}" ] && eval $(eval_ecolors)
- einfon " $1? (${WARN}yes${NORMAL}/${GOOD}No${NORMAL}) "
- shift
- # This is ugly as s**t. But POSIX doesn't provide `read -t`, so
- # we end up having to implement our own crap with stty/etc...
- savetty=$(stty -g)
- resettty='stty ${savetty}; trap - EXIT HUP INT TERM'
- trap 'eval "${resettty}"' EXIT HUP INT TERM
- stty -icanon
- [ "${1}" = -t ] && stty min 0 time "$(( $2 * 10 ))"
- ans=$(dd count=1 bs=1 2>/dev/null) || ans=''
- eval "${resettty}"
- if [ -z "${ans}" ] ; then
- printf '\r'
- else
- echo
- fi
- case ${ans} in
- [yY]) return 0;;
- *) return 1;;
- esac
- }
-
- # Notes: sed not used to avoid case where /usr partition is encrypted.
- mode=${key/*:/} && ( [ "${mode}" = "${key}" ] || [ -z "${mode}" ] ) && mode=reg
- key=${key/:*/}
- case "${mode}" in
- gpg|reg)
- # handle key on removable device
- if [ -n "${remdev}" ] ; then
- # temp directory to mount removable device
- local mntrem="${RC_SVCDIR}/dm-crypt-remdev.$$"
- if [ ! -d "${mntrem}" ] ; then
- if ! mkdir -p "${mntrem}" ; then
- ewarn "${source} will not be decrypted ..."
- einfo "Reason: Unable to create temporary mount point '${mntrem}'"
- return
- fi
- fi
- i=0
- einfo "Please insert removable device for ${target}"
- while [ ${i} -lt ${dmcrypt_max_timeout:-120} ] ; do
- foo=""
- if mount -n -o ro "${remdev}" "${mntrem}" 2>/dev/null >/dev/null ; then
- # keyfile exists?
- if [ ! -e "${mntrem}${key}" ] ; then
- umount -n "${mntrem}"
- rmdir "${mntrem}"
- einfo "Cannot find ${key} on removable media."
- read_abort "Abort" ${read_timeout:--t 1} && return
- else
- key="${mntrem}${key}"
- break
- fi
- else
- [ -e "${remdev}" ] \
- && foo="mount failed" \
- || foo="mount source not found"
- fi
- : $((i += 1))
- read_abort "Stop waiting after $i attempts (${foo})" -t 1 && return
- done
- else # keyfile ! on removable device
- if [ ! -e "${key}" ] ; then
- ewarn "${source} will not be decrypted ..."
- einfo "Reason: keyfile ${key} does not exist."
- return
- fi
- fi
- ;;
- *)
- ewarn "${source} will not be decrypted ..."
- einfo "Reason: mode ${mode} is invalid."
- return
- ;;
- esac
- else
- mode=none
- fi
- ebegin " ${target} using: ${options} ${arg1} ${arg2} ${arg3}"
- if [ "${mode}" = "gpg" ] ; then
- : ${gpg_options:='-q -d'}
- # gpg available ?
- if type -p gpg >/dev/null ; then
- for i in 0 1 2 ; do
- # paranoid, don't store key in a variable, pipe it so it stays very little in ram unprotected.
- # save stdin stdout stderr "values"
- gpg ${gpg_options} ${key} 2>/dev/null | cryptsetup ${options} ${arg1} ${arg2} ${arg3}
- ret=$?
- [ ${ret} -eq 0 ] && break
- done
- eend ${ret} "failure running cryptsetup"
- else
- ewarn "${source} will not be decrypted ..."
- einfo "Reason: cannot find gpg application."
- einfo "You have to install app-crypt/gnupg first."
- einfo "If you have /usr on its own partition, try copying gpg to /bin ."
- fi
- else
- if [ "${mode}" = "reg" ] ; then
- cryptsetup ${options} -d ${key} ${arg1} ${arg2} ${arg3}
- ret=$?
- eend ${ret} "failure running cryptsetup"
- else
- cryptsetup ${options} ${arg1} ${arg2} ${arg3}
- ret=$?
- eend ${ret} "failure running cryptsetup"
- fi
- fi
- if [ -d "${mntrem}" ] ; then
- umount -n ${mntrem} 2>/dev/null >/dev/null
- rmdir ${mntrem} 2>/dev/null >/dev/null
- fi
- splash svc_input_end ${SVCNAME} >/dev/null 2>&1
-
- if [ ${ret} -ne 0 ] ; then
- cryptfs_status=1
- else
- if [ -n "${pre_mount}" ] ; then
- dev="/dev/mapper/${target}"
- ebegin " pre_mount: ${pre_mount}"
- eval "${pre_mount}" > /dev/null
- ewend $? || cryptfs_status=1
- fi
- fi
-}
-
-# Run any post_mount commands for an individual mount
-#
-# Note: This relies on variables localized in the main body below.
-dm_crypt_execute_localmount() {
- local mount_point
-
- [ -z "${target}" ] && [ -z "${post_mount}" ] && return
-
- if ! cryptsetup status ${target} | egrep -q '\<active:' ; then
- ewarn "Skipping unmapped target ${target}"
- cryptfs_status=1
- return
- fi
-
- mount_point=$(grep "/dev/mapper/${target}" /proc/mounts | cut -d' ' -f2)
- if [ -z "${mount_point}" ] ; then
- ewarn "Failed to find mount point for ${target}, skipping"
- cryptfs_status=1
- fi
-
- if [ -n "${post_mount}" ] ; then
- ebegin "Running post_mount commands for target ${target}"
- eval "${post_mount}" >/dev/null
- eend $? || cryptfs_status=1
- fi
-}
-
-# Lookup optional bootparams
-get_bootparam_val() {
- # We're given something like:
- # foo=bar=cow
- # Return the "bar=cow" part.
- case $1 in
- *\=*)
- local key=$(echo "$1" | cut -f1 -d=)
- echo "$1" | cut -c $(( ${#key} + 2 ))
- ;;
- esac
-}
-
-start() {
- local header=true cryptfs_status=0
- local gpg_options key loop_file target targetline options pre_mount post_mount source swap remdev
-
- local x
- for x in $(cat /proc/cmdline) ; do
- case "${x}" in
- key_timeout\=*)
- local KEY_TIMEOUT=$(get_bootparam_val "${x}")
- if [ ${KEY_TIMEOUT} -gt 0 ] ; then
- read_timeout="-t ${KEY_TIMEOUT}"
- fi
- ;;
- esac
- done
-
- while read -u 3 targetline ; do
- case ${targetline} in
- # skip comments and blank lines
- ""|"#"*) continue ;;
- # skip service-specific openrc configs #377927
- rc_*) continue ;;
- esac
-
- ${header} && ebegin "Setting up dm-crypt mappings"
- header=false
-
- # check for the start of a new target/swap
- case ${targetline} in
- target=*|swap=*)
- # If we have a target queued up, then execute it
- ${execute_hook}
-
- # Prepare for the next target/swap by resetting variables
- unset gpg_options key loop_file target options pre_mount post_mount source swap remdev
- ;;
-
- gpg_options=*|remdev=*|key=*|loop_file=*|options=*|pre_mount=*|post_mount=*|source=*)
- if [ -z "${target}${swap}" ] ; then
- ewarn "Ignoring setting outside target/swap section: ${targetline}"
- continue
- fi
- ;;
-
- dmcrypt_max_timeout=*)
- # ignore global options
- continue
- ;;
-
- *)
- ewarn "Skipping invalid line in ${conf_file}: ${targetline}"
- ;;
- esac
-
- # Queue this setting for the next call to dm_crypt_execute_xxx
- eval "${targetline}"
- done 3< ${conf_file}
-
- # If we have a target queued up, then execute it
- ${execute_hook}
-
- ewend ${cryptfs_status} "Failed to setup dm-crypt devices"
-}
-
-stop() {
- local line header
-
- # Break down all mappings
- header=true
- egrep "^(target|swap)=" ${conf_file} | \
- while read line ; do
- ${header} && einfo "Removing dm-crypt mappings"
- header=false
-
- target= swap=
- eval ${line}
-
- [ -n "${swap}" ] && target=${swap}
- if [ -z "${target}" ] ; then
- ewarn "invalid line in ${conf_file}: ${line}"
- continue
- fi
-
- ebegin " ${target}"
- cryptsetup remove ${target}
- eend $?
- done
-
- # Break down loop devices
- header=true
- grep '^source=./dev/loop' ${conf_file} | \
- while read line ; do
- ${header} && einfo "Detaching dm-crypt loop devices"
- header=false
-
- source=
- eval ${line}
-
- ebegin " ${source}"
- losetup -d "${source}"
- eend $?
- done
-
- return 0
-}
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