Refactor live-boot argument parser from live into live-helpers.

This will be useful for making it possible to enable persistent during
user-space.

1 files changed, 388 insertions, 0 deletions

diff --git a/scripts/live-helpers b/scripts/live-helpers
index db1eb9f..d4a5316 100644
--- a/scripts/live-helpers
+++ b/scripts/live-helpers
@@ -15,6 +15,394 @@ else
 	udevinfo='udevinfo'
 fi
 
+Arguments ()
+{
+	PRESEEDS=""
+	LOCATIONS=""
+
+	for ARGUMENT in $(cat /proc/cmdline)
+	do
+		case "${ARGUMENT}" in
+			skipconfig)
+				NOACCESSIBILITY="Yes"
+				NOFASTBOOT="Yes"
+				NOFSTAB="Yes"
+				NONETWORKING="Yes"
+
+				export NOACCESSIBILITY NOFASTBOOT NOFSTAB NONETWORKING
+				;;
+
+			access=*)
+				ACCESS="${ARGUMENT#access=}"
+				export ACCESS
+				;;
+
+			console=*)
+				DEFCONSOLE="${ARGUMENT#*=}"
+				export DEFCONSOLE
+				;;
+
+			BOOTIF=*)
+				BOOTIF="${x#BOOTIF=}"
+				;;
+
+			debug)
+				DEBUG="Yes"
+				export DEBUG
+
+				set -x
+				;;
+
+			dhcp)
+				# Force dhcp even while netbooting
+				# Use for debugging in case somebody works on fixing dhclient
+				DHCP="Force";
+				export DHCP
+				;;
+
+			nodhcp)
+				unset DHCP
+				;;
+
+			ethdevice=*)
+				DEVICE="${ARGUMENT#ethdevice=}"
+				ETHDEVICE="${DEVICE}"
+				export DEVICE ETHDEVICE
+				;;
+
+			ethdevice-timeout=*)
+				ETHDEV_TIMEOUT="${ARGUMENT#ethdevice-timeout=}"
+				export ETHDEV_TIMEOUT
+				;;
+
+			fetch=*)
+				FETCH="${ARGUMENT#fetch=}"
+				export FETCH
+				;;
+
+			forcepersistentfsck)
+				FORCEPERSISTENTFSCK="Yes"
+				export FORCEPERSISTENTFSCK
+				;;
+
+			ftpfs=*)
+				FTPFS="${ARGUMENT#ftpfs=}"
+				export FTPFS
+				;;
+
+			httpfs=*)
+				HTTPFS="${ARGUMENT#httpfs=}"
+				export HTTPFS
+				;;
+
+			iscsi=*)
+				ISCSI="${ARGUMENT#iscsi=}"
+				#ip:port - separated by ;
+				ISCSI_PORTAL="${ISCSI%;*}"
+				if echo "${ISCSI_PORTAL}" | grep -q , ; then
+					ISCSI_SERVER="${ISCSI_PORTAL%,*}"
+					ISCSI_PORT="${ISCSI_PORTAL#*,}"
+				fi
+				#target name
+				ISCSI_TARGET="${ISCSI#*;}"
+				export ISCSI ISCSI_PORTAL ISCSI_TARGET ISCSI_SERVER ISCSI_PORT
+				;;
+
+			isofrom=*|fromiso=*)
+				FROMISO="${ARGUMENT#*=}"
+				export FROMISO
+				;;
+
+			ignore_uuid)
+				IGNORE_UUID="Yes"
+				export IGNORE_UUID
+				;;
+
+			integrity-check)
+				INTEGRITY_CHECK="Yes"
+				export INTEGRITY_CHECK
+				;;
+
+			ip=*)
+				STATICIP="${ARGUMENT#ip=}"
+
+				if [ -z "${STATICIP}" ]
+				then
+					STATICIP="frommedia"
+				fi
+
+				export STATICIP
+				;;
+
+			live-getty)
+				LIVE_GETTY="1"
+				export LIVE_GETTY
+				;;
+
+			live-media=*|bootfrom=*)
+				LIVE_MEDIA="${ARGUMENT#*=}"
+				export LIVE_MEDIA
+				;;
+
+			live-media-encryption=*|encryption=*)
+				LIVE_MEDIA_ENCRYPTION="${ARGUMENT#*=}"
+				export LIVE_MEDIA_ENCRYPTION
+				;;
+
+			live-media-offset=*)
+				LIVE_MEDIA_OFFSET="${ARGUMENT#live-media-offset=}"
+				export LIVE_MEDIA_OFFSET
+				;;
+
+			live-media-path=*)
+				LIVE_MEDIA_PATH="${ARGUMENT#live-media-path=}"
+				export LIVE_MEDIA_PATH
+				;;
+
+			live-media-timeout=*)
+				LIVE_MEDIA_TIMEOUT="${ARGUMENT#live-media-timeout=}"
+				export LIVE_MEDIA_TIMEOUT
+				;;
+
+			module=*)
+				MODULE="${ARGUMENT#module=}"
+				export MODULE
+				;;
+
+			netboot=*)
+				NETBOOT="${ARGUMENT#netboot=}"
+				export NETBOOT
+				;;
+
+			nfsopts=*)
+				NFSOPTS="${ARGUMENT#nfsopts=}"
+				export NFSOPTS
+				;;
+
+			nfscow=*)
+				NFS_COW="${ARGUMENT#nfscow=}"
+				export NFS_COW
+				;;
+
+			noaccessibility)
+				NOACCESSIBILITY="Yes"
+				export NOACCESSIBILITY
+				;;
+
+			nofastboot)
+				NOFASTBOOT="Yes"
+				export NOFASTBOOT
+				;;
+
+			nofstab)
+				NOFSTAB="Yes"
+				export NOFSTAB
+				;;
+
+			nonetworking)
+				NONETWORKING="Yes"
+				export NONETWORKING
+				;;
+
+			ramdisk-size=*)
+				ramdisk_size="${ARGUMENT#ramdisk-size=}"
+				;;
+
+			swapon)
+				SWAPON="Yes"
+				export SWAPON
+				;;
+
+			persistent)
+				PERSISTENT="Yes"
+				export PERSISTENT
+				;;
+
+			persistent-encryption=*)
+				PERSISTENT_ENCRYPTION="${ARGUMENT#*=}"
+				export PERSISTENT_ENCRYPTION
+				;;
+
+			persistent-media=*)
+				PERSISTENT_MEDIA="${ARGUMENT#*=}"
+				export PERSISTENT_MEDIA
+				;;
+			persistent-method=*)
+				PERSISTENT_METHOD="${ARGUMENT#*=}"
+				export PERSISTENT_METHOD
+				;;
+
+			persistent-path=*)
+				PERSISTENT_PATH="${ARGUMENT#persistent-path=}"
+				export PERSISTENT_PATH
+				;;
+			persistent-read-only)
+				PERSISTENT_READONLY="Yes"
+				export PERSISTENT_READONLY
+				;;
+
+			persistent-storage=*)
+				PERSISTENT_STORAGE="${ARGUMENT#persistent-storage=}"
+				export PERSISTENT_STORAGE
+				;;
+
+			persistent-subtext=*)
+				root_overlay_label="${root_overlay_label}-${ARGUMENT#persistent-subtext=}"
+				custom_overlay_label="${custom_overlay_label}-${ARGUMENT#persistent-subtext=}"
+				root_snapshot_label="${root_snapshot_label}-${ARGUMENT#persistent-subtext=}"
+				home_snapshot_label="${home_snapshot_label}-${ARGUMENT#persistent-subtext=}"
+				;;
+
+			nopersistent)
+				NOPERSISTENT="Yes"
+				export NOPERSISTENT
+				;;
+
+			noprompt)
+				NOPROMPT="Yes"
+				export NOPROMPT
+				;;
+
+			noprompt=*)
+				NOPROMPT="${ARGUMENT#noprompt=}"
+				export NOPROMPT
+				;;
+
+			quickusbmodules)
+				QUICKUSBMODULES="Yes"
+				export QUICKUSBMODULES
+				;;
+
+			preseed/file=*|file=*)
+				LOCATIONS="${ARGUMENT#*=} ${LOCATIONS}"
+				export LOCATIONS
+				;;
+
+			nopreseed)
+				NOPRESEED="Yes"
+				export NOPRESEED
+				;;
+
+			*/*=*)
+				question="${ARGUMENT%%=*}"
+				value="${ARGUMENT#*=}"
+				PRESEEDS="${PRESEEDS}\"${question}=${value}\" "
+				export PRESEEDS
+				;;
+
+			showmounts)
+				SHOWMOUNTS="Yes"
+				export SHOWMOUNTS
+				;;
+
+			silent)
+				SILENT="Yes"
+				export SILENT
+				;;
+
+			todisk=*)
+				TODISK="${ARGUMENT#todisk=}"
+				export TODISK
+				;;
+
+			toram)
+				TORAM="Yes"
+				export TORAM
+				;;
+
+			toram=*)
+				TORAM="Yes"
+				MODULETORAM="${ARGUMENT#toram=}"
+				export TORAM MODULETORAM
+				;;
+
+			exposedroot)
+				EXPOSED_ROOT="Yes"
+				export EXPOSED_ROOT
+				;;
+
+			plainroot)
+				PLAIN_ROOT="Yes"
+				export PLAIN_ROOT
+				;;
+
+			skipunion)
+				SKIP_UNION_MOUNTS="Yes"
+				export SKIP_UNION_MOUNTS
+				;;
+
+			root=*)
+				ROOT="${ARGUMENT#root=}"
+				export ROOT
+				;;
+
+			union=*)
+				UNIONTYPE="${ARGUMENT#union=}"
+				export UNIONTYPE
+				;;
+		esac
+	done
+
+	# sort of compatibility with netboot.h from linux docs
+	if [ -z "${NETBOOT}" ]
+	then
+		if [ "${ROOT}" = "/dev/nfs" ]
+		then
+			NETBOOT="nfs"
+			export NETBOOT
+		elif [ "${ROOT}" = "/dev/cifs" ]
+		then
+			NETBOOT="cifs"
+			export NETBOOT
+		fi
+	fi
+
+	if [ -z "${MODULE}" ]
+	then
+		MODULE="filesystem"
+		export MODULE
+	fi
+
+	if [ -z "${UNIONTYPE}" ]
+	then
+		UNIONTYPE="aufs"
+		export UNIONTYPE
+	fi
+
+	if [ -z "${PERSISTENT_ENCRYPTION}" ]
+	then
+		PERSISTENT_ENCRYPTION="none"
+		export PERSISTENT_ENCRYPTION
+	elif echo ${PERSISTENT_ENCRYPTION} | grep -qe "\<luks\>"
+	then
+		if ! modprobe dm-crypt
+		then
+			log_warning_msg "Unable to load module dm-crypt"
+			PERSISTENT_ENCRYPTION=$(echo ${PERSISTENT_ENCRYPTION} | sed -e 's/\<luks,\|,\?luks$//g')
+			export PERSISTENT_ENCRYPTION
+		fi
+
+		if [ ! -x /lib/cryptsetup/askpass ] || [ ! -x /sbin/cryptsetup ]
+		then
+			log_warning_msg "cryptsetup in unavailable"
+			PERSISTENT_ENCRYPTION=$(echo ${PERSISTENT_ENCRYPTION} | sed -e 's/\<luks,\|,\?luks$//g')
+			export PERSISTENT_ENCRYPTION
+		fi
+	fi
+
+	if [ -z "${PERSISTENT_METHOD}" ]
+	then
+		PERSISTENT_METHOD="snapshot,overlay"
+		export PERSISTENT_METHOD
+	fi
+
+	if [ -z "${PERSISTENT_STORAGE}" ]
+	then
+		PERSISTENT_STORAGE="filesystem,file"
+		export PERSISTENT_STORAGE
+	fi
+}
+
 sys2dev ()
 {
 	sysdev=${1#/sys}