sys-fs/cryptsetup : version bump

1 files changed, 368 insertions, 0 deletions

diff --git a/sys-fs/cryptsetup/files/2.4.3-dmcrypt.rc b/sys-fs/cryptsetup/files/2.4.3-dmcrypt.rc
new file mode 100644
index 00000000..ea9a5ca4
--- /dev/null
+++ b/sys-fs/cryptsetup/files/2.4.3-dmcrypt.rc
@@ -0,0 +1,368 @@
+#!/sbin/openrc-run
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+depend() {
+	use modules
+	before checkfs fsck
+	after dev-settle
+
+	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 source_dev
+
+	if [ -z "${target}" -a -z "${swap}" ] ; then
+		return
+	fi
+
+	# Set up default values.
+	: ${dmcrypt_key_timeout:=1}
+	: ${dmcrypt_max_timeout:=300}
+	: ${dmcrypt_retries:=5}
+	: ${wait:=5}
+
+	# Handle automatic look up of the source path.
+	if [ -z "${source}" -a -n "${loop_file}" ] ; then
+		source=$(losetup --show -f "${loop_file}")
+	fi
+	case ${source} in
+	*=*)
+		i=0
+		while [ ${i} -lt ${wait} ]; do
+			if source_dev="$(blkid -l -t "${source}" -o device)"; then
+				source="${source_dev}"
+				break
+			fi
+			: $((i += 1))
+			einfo "waiting for source \"${source}\" for ${target}..."
+			sleep 1
+		done
+		;;
+	esac
+	if [ -z "${source}" ] || [ ! -e "${source}" ] ; then
+		ewarn "source \"${source}\" for ${target} missing, skipping..."
+		return
+	fi
+
+	if [ -n "${header}" ] ; then
+		header_opt="--header=${header}"
+
+		i=0
+		while [ ! -e "${header}" ] && [ ${i} -lt ${wait} ] ; do
+			: $((i += 1))
+			einfo "Waiting for header ${header} to appear for ${target} ${i}/${dmcrypt_max_timeout} ..."
+			sleep 1
+		done
+		if [ ${i} -gt ${wait} ] || [ ${i} -eq ${wait} ] ; then
+			ewarn "Waited ${i} times for header file ${header}. Aborting ${target}."
+			return
+		fi
+	else
+		header_opt=""
+	fi
+
+	if [ -n "${target}" ] ; then
+		# let user set options, otherwise leave empty
+		: ${options:=' '}
+	elif [ -n "${swap}" ] ; then
+		if cryptsetup ${header_opt} 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 ${header_opt} 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 ${header_opt} status ${target} | grep -E -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: ${header_opt} ${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 ${header_opt} --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 ${header_opt} ${options} -d ${key} ${arg1} ${arg2} ${arg3}
+			ret=$?
+			eend ${ret} "failure running cryptsetup"
+		else
+			cryptsetup ${header_opt} ${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 print_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
+
+		${print_header} && ebegin "Setting up dm-crypt mappings"
+		print_header=false
+
+		# check for the start of a new target/swap
+		case ${targetline} in
+		target=*|swap=*)
+			# If we have a target queued up, then execute it
+			dm_crypt_execute
+
+			# Prepare for the next target/swap by resetting variables
+			unset gpg_options key loop_file target options pre_mount post_mount source swap remdev wait header header_opt
+			;;
+
+		gpg_options=*|remdev=*|key=*|loop_file=*|options=*|pre_mount=*|post_mount=*|wait=*|source=*|header=*)
+			if [ -z "${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 print_header
+
+	# Break down all mappings
+	print_header=true
+	grep -E "^(target|swap)=" ${conf_file} | \
+	while read line ; do
+		${print_header} && einfo "Removing dm-crypt mappings"
+		print_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 ${header_opt} remove ${target}
+		eend $?
+	done
+
+	# Break down loop devices
+	print_header=true
+	grep '^source=./dev/loop' ${conf_file} | \
+	while read line ; do
+		${print_header} && einfo "Detaching dm-crypt loop devices"
+		print_header=false
+
+		source=
+		eval ${line}
+
+		ebegin "  ${source}"
+		losetup -d "${source}"
+		eend $?
+	done
+
+	return 0
+}