--- /dev/null
+#!/sbin/openrc-run
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+depend() {
+ before checkfs fsck
+
+ if grep -qs ^swap= "${conf_file}" ; then
+ before swap
+ fi
+}
+
+# We support multiple dmcrypt instances based on $SVCNAME
+conf_file="/etc/conf.d/${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() {
+ local dev ret mode foo
+
+ if [ -z "${target}" -a -z "${swap}" ] ; then
+ return
+ fi
+
+ # Set up default values.
+ : ${dmcrypt_key_timeout:=1}
+ : ${dmcrypt_max_timeout:=300}
+ : ${dmcrypt_retries:=5}
+
+ # Handle automatic look up of the source path.
+ if [ -z "${source}" -a -n "${loop_file}" ] ; then
+ source=$(losetup --show -f "${loop_file}")
+ fi
+ case ${source} in
+ *=*)
+ source=$(blkid -l -t "${source}" -o device)
+ ;;
+ esac
+ if [ -z "${source}" ] || [ ! -e "${source}" ] ; then
+ ewarn "source \"${source}\" for ${target} missing, skipping..."
+ return
+ fi
+
+ if [ -n "${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 ${dev}'}
+ fi
+
+ if [ -n "${loop_file}" ] ; then
+ dev="/dev/mapper/${target}"
+ ebegin " Setting up loop device ${source}"
+ losetup ${source} ${loop_file}
+ fi
+
+ # cryptsetup:
+ # open <device> <name> # <device> is $source
+ # create <name> <device> # <name> is $target
+ local arg1="create" arg2="${target}" arg3="${source}"
+ if cryptsetup isLuks ${source} 2>/dev/null ; then
+ arg1="open"
+ arg2="${source}"
+ arg3="${target}"
+ fi
+
+ # 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
+ 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 ${dmcrypt_max_timeout} ] ; do
+ foo=""
+ if mount -n -o ro "${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" ${dmcrypt_key_timeout} && return
+ else
+ key="${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 command -v gpg >/dev/null ; then
+ i=0
+ while [ ${i} -lt ${dmcrypt_retries} ] ; do
+ # paranoid, don't store key in a variable, pipe it so it stays very little in ram unprotected.
+ # save stdin stdout stderr "values"
+ timeout ${dmcrypt_max_timeout} gpg ${gpg_options} ${key} 2>/dev/null | \
+ cryptsetup --key-file - ${options} ${arg1} ${arg2} ${arg3}
+ ret=$?
+ # The timeout command exits 124 when it times out.
+ [ ${ret} -eq 0 -o ${ret} -eq 124 ] && break
+ : $(( i += 1 ))
+ 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}"
+ eval ebegin \"" pre_mount: ${pre_mount}"\"
+ eval "${pre_mount}" > /dev/null
+ ewend $? || cryptfs_status=1
+ fi
+ fi
+}
+
+# Lookup optional bootparams
+get_bootparam_val() {
+ # We're given something like:
+ # foo=bar=cow
+ # Return the "bar=cow" part.
+ case $1 in
+ *=*)
+ echo "${1#*=}"
+ ;;
+ 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=*)
+ dmcrypt_key_timeout=$(get_bootparam_val "${x}")
+ ;;
+ esac
+ done
+
+ while read targetline <&3 ; 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 ${targetline} in
+ target=*|swap=*)
+ # If we have a target queued up, then execute it
+ dm_crypt_execute
+
+ # Prepare for the next target/swap by resetting variables
+ unset gpg_options key loop_file target options pre_mount post_mount source swap remdev
+ ;;
+
+ gpg_options=*|remdev=*|key=*|loop_file=*|options=*|pre_mount=*|post_mount=*|source=*)
+ if [ -z "${target}${swap}" ] ; then
+ ewarn "Ignoring setting outside target/swap section: ${targetline}"
+ continue
+ fi
+ ;;
+
+ dmcrypt_*=*)
+ # ignore global options
+ continue
+ ;;
+
+ *)
+ ewarn "Skipping invalid line in ${conf_file}: ${targetline}"
+ ;;
+ esac
+
+ # Queue this setting for the next call to dm_crypt_execute
+ eval "${targetline}"
+ done 3< ${conf_file}
+
+ # If we have a target queued up, then execute it
+ dm_crypt_execute
+
+ 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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