/
live
executable file
·1694 lines (1461 loc) · 40.3 KB
/
live
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#!/bin/sh
# set -e
export PATH="/root/usr/bin:/root/usr/sbin:/root/bin:/root/sbin:/usr/bin:/usr/sbin:/bin:/sbin"
echo "/root/lib" >> /etc/ld.so.conf
echo "/root/usr/lib" >> /etc/ld.so.conf
mountpoint="/live/image"
alt_mountpoint="/media"
LIVE_MEDIA_PATH="live"
HOSTNAME="host"
mkdir -p "${mountpoint}"
tried="/tmp/tried"
# Create /etc/mtab for debug purpose and future syncs
if [ ! -d /etc ]
then
mkdir /etc/
fi
if [ ! -f /etc/mtab ]
then
touch /etc/mtab
fi
. /scripts/live-helpers
if [ ! -f /live.vars ]
then
touch /live.vars
fi
is_live_path ()
{
DIRECTORY="${1}"
if [ -d "${DIRECTORY}"/"${LIVE_MEDIA_PATH}" ]
then
for FILESYSTEM in squashfs ext2 ext3 ext4 xfs dir jffs2
do
if [ "$(echo ${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM})" != "${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM}" ]
then
return 0
fi
done
fi
return 1
}
matches_uuid ()
{
if [ "${IGNORE_UUID}" ] || [ ! -e /conf/uuid.conf ]
then
return 0
fi
path="${1}"
uuid="$(cat /conf/uuid.conf)"
for try_uuid_file in "${path}/.disk/live-uuid"*
do
[ -e "${try_uuid_file}" ] || continue
try_uuid="$(cat "${try_uuid_file}")"
if [ "${uuid}" = "${try_uuid}" ]
then
return 0
fi
done
return 1
}
get_backing_device ()
{
case "${1}" in
*.squashfs|*.ext2|*.ext3|*.ext4|*.jffs2)
echo $(setup_loop "${1}" "loop" "/sys/block/loop*" '0' "${LIVE_MEDIA_ENCRYPTION}" "${2}")
;;
*.dir)
echo "directory"
;;
*)
panic "Unrecognized live filesystem: ${1}"
;;
esac
}
match_files_in_dir ()
{
# Does any files match pattern ${1} ?
local pattern="${1}"
if [ "$(echo ${pattern})" != "${pattern}" ]
then
return 0
fi
return 1
}
mount_images_in_directory ()
{
directory="${1}"
rootmnt="${2}"
mac="${3}"
if match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.squashfs" ||
match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext2" ||
match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext3" ||
match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext4" ||
match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.jffs2" ||
match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.dir"
then
[ -n "${mac}" ] && adddirectory="${directory}/${LIVE_MEDIA_PATH}/${mac}"
setup_unionfs "${directory}/${LIVE_MEDIA_PATH}" "${rootmnt}" "${adddirectory}"
else
panic "No supported filesystem images found at /${LIVE_MEDIA_PATH}."
fi
}
is_nice_device ()
{
sysfs_path="${1#/sys}"
if [ -e /lib/udev/path_id ]
then
# squeeze
PATH_ID="/lib/udev/path_id"
else
# wheezy/sid (udev >= 174)
PATH_ID="/sbin/udevadm test-builtin path_id"
fi
if ${PATH_ID} "${sysfs_path}" | egrep -q "ID_PATH=(usb|pci-[^-]*-(ide|sas|scsi|usb|virtio)|platform-sata_mv|platform-orion-ehci|platform-mmc|platform-mxsdhci)"
then
return 0
elif echo "${sysfs_path}" | grep -q '^/block/vd[a-z]$'
then
return 0
elif echo ${sysfs_path} | grep -q "^/block/dm-"
then
return 0
elif echo ${sysfs_path} | grep -q "^/block/mtdblock"
then
return 0
fi
return 1
}
copy_live_to ()
{
copyfrom="${1}"
copytodev="${2}"
copyto="${copyfrom}_swap"
if [ -z "${MODULETORAM}" ]
then
size=$(fs_size "" ${copyfrom}/${LIVE_MEDIA_PATH} "used")
else
MODULETORAMFILE="${copyfrom}/${LIVE_MEDIA_PATH}/${MODULETORAM}"
if [ -f "${MODULETORAMFILE}" ]
then
size=$( expr $(ls -la ${MODULETORAMFILE} | awk '{print $5}') / 1024 + 5000 )
else
log_warning_msg "Error: toram-module ${MODULETORAM} (${MODULETORAMFILE}) could not be read."
return 1
fi
fi
if [ "${copytodev}" = "ram" ]
then
# copying to ram:
freespace=$(awk '/^MemFree:/{f=$2} /^Cached:/{c=$2} END{print f+c}' /proc/meminfo)
mount_options="-o size=${size}k"
free_string="memory"
fstype="tmpfs"
dev="/dev/shm"
else
# it should be a writable block device
if [ -b "${copytodev}" ]
then
dev="${copytodev}"
free_string="space"
fstype=$(get_fstype "${dev}")
freespace=$(fs_size "${dev}")
else
log_warning_msg "${copytodev} is not a block device."
return 1
fi
fi
if [ "${freespace}" -lt "${size}" ]
then
log_warning_msg "Not enough free ${free_string} (${freespace}k free, ${size}k needed) to copy live media in ${copytodev}."
return 1
fi
# Custom ramdisk size
if [ -z "${mount_options}" ] && [ -n "${ramdisk_size}" ]
then
# FIXME: should check for wrong values
mount_options="-o size=${ramdisk_size}"
fi
# begin copying (or uncompressing)
mkdir "${copyto}"
log_begin_msg "mount -t ${fstype} ${mount_options} ${dev} ${copyto}"
mount -t "${fstype}" ${mount_options} "${dev}" "${copyto}"
if [ "${extension}" = "tgz" ]
then
cd "${copyto}"
tar zxf "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
rm -f "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
mount -r -o move "${copyto}" "${rootmnt}"
cd "${OLDPWD}"
else
if [ -n "${MODULETORAMFILE}" ]
then
if [ -x /bin/rsync ]
then
echo " * Copying $MODULETORAMFILE to RAM" 1>/dev/console
rsync -a --progress ${MODULETORAMFILE} ${copyto} 1>/dev/console # copy only the filesystem module
else
cp ${MODULETORAMFILE} ${copyto} # copy only the filesystem module
fi
else
if [ -x /bin/rsync ]
then
echo " * Copying whole medium to RAM" 1>/dev/console
rsync -a --progress ${copyfrom}/* ${copyto} 1>/dev/console # "cp -a" from busybox also copies hidden files
else
mkdir -p ${copyto}/${LIVE_MEDIA_PATH}
cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/* ${copyto}/${LIVE_MEDIA_PATH}
if [ -e ${copyfrom}/${LIVE_MEDIA_PATH}/.disk ]
then
cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/.disk ${copyto}
fi
fi
fi
umount ${copyfrom}
mount -r -o move ${copyto} ${copyfrom}
fi
rmdir ${copyto}
return 0
}
do_netsetup ()
{
modprobe -q af_packet # For DHCP
udevadm trigger
udevadm settle
[ -n "$ETHDEV_TIMEOUT" ] || ETHDEV_TIMEOUT=15
echo "Using timeout of $ETHDEV_TIMEOUT seconds for network configuration."
if [ -z "${NETBOOT}" ] && [ -z "${FETCH}" ] && \
[ -z "${HTTPFS}" ] && [ -z "${FTPFS}" ]
then
# support for Syslinux IPAPPEND parameter
# it sets the BOOTIF variable on the kernel parameter
if [ -n "${BOOTIF}" ]
then
# pxelinux sets BOOTIF to a value based on the mac address of the
# network card used to PXE boot, so use this value for DEVICE rather
# than a hard-coded device name from initramfs.conf. this facilitates
# network booting when machines may have multiple network cards.
# pxelinux sets BOOTIF to 01-$mac_address
# strip off the leading "01-", which isn't part of the mac
# address
temp_mac=${BOOTIF#*-}
# convert to typical mac address format by replacing "-" with ":"
bootif_mac=""
IFS='-'
for x in $temp_mac
do
if [ -z "$bootif_mac" ]
then
bootif_mac="$x"
else
bootif_mac="$bootif_mac:$x"
fi
done
unset IFS
# look for devices with matching mac address, and set DEVICE to
# appropriate value if match is found.
for device in /sys/class/net/*
do
if [ -f "$device/address" ]
then
current_mac=$(cat "$device/address")
if [ "$bootif_mac" = "$current_mac" ]
then
DEVICE=${device##*/}
break
fi
fi
done
fi
# if ethdevice was not specified on the kernel command line
# make sure we try to get a working network configuration
# for *every* present network device (except for loopback of course)
if [ -z "$ETHDEVICE" ] ; then
echo "If you want to boot from a specific device use bootoption ethdevice=..."
for device in /sys/class/net/*; do
dev=${device##*/} ;
if [ "$dev" != "lo" ] ; then
ETHDEVICE="$ETHDEVICE $dev"
fi
done
fi
# split args of ethdevice=eth0,eth1 into "eth0 eth1"
for device in $(echo $ETHDEVICE | sed 's/,/ /g') ; do
devlist="$devlist $device"
done
# this is tricky (and ugly) because ipconfig sometimes just hangs/runs into
# an endless loop; iff execution fails give it two further tries, that's
# why we use '$devlist $devlist $devlist' for the other for loop
for dev in $devlist $devlist $devlist ; do
echo "Executing ipconfig -t $ETHDEV_TIMEOUT $dev"
ipconfig -t "$ETHDEV_TIMEOUT" $dev | tee -a /netboot.config &
jobid=$!
sleep "$ETHDEV_TIMEOUT" ; sleep 1
if [ -r /proc/"$jobid"/status ] ; then
echo "Killing job $jobid for device $dev as ipconfig ran into recursion..."
kill -9 $jobid
fi
# if configuration of device worked we should have an assigned
# IP address, iff so let's use the according as $DEVICE for later usage
# simple and primitive approach which seems to work fine
if ifconfig $dev | grep -q 'inet.*addr:' ; then
export DEVICE="$dev"
break
fi
done
else
for interface in ${DEVICE}; do
ipconfig -t "$ETHDEV_TIMEOUT" ${interface} | tee /netboot-${interface}.config
[ -e /tmp/net-${interface}.conf ] && . /tmp/net-${interface}.conf
if [ "$IPV4ADDR" != "0.0.0.0" ]
then
break
fi
done
fi
for interface in ${DEVICE}; do
# source relevant ipconfig output
OLDHOSTNAME=${HOSTNAME}
[ -e /tmp/net-${interface}.conf ] && . /tmp/net-${interface}.conf
[ -z ${HOSTNAME} ] && HOSTNAME=${OLDHOSTNAME}
export HOSTNAME
if [ -n "${interface}" ]
then
HWADDR="$(cat /sys/class/net/${interface}/address)"
fi
if [ ! -e "/etc/resolv.conf" ]
then
echo "Creating /etc/resolv.conf"
if [ -n "${DNSDOMAIN}" ]
then
echo "domain ${DNSDOMAIN}" > /etc/resolv.conf
echo "search ${DNSDOMAIN}" >> /etc/resolv.conf
fi
for i in ${IPV4DNS0} ${IPV4DNS1} ${IPV4DNS1}
do
if [ -n "$i" ] && [ "$i" != 0.0.0.0 ]
then
echo "nameserver $i" >> /etc/resolv.conf
fi
done
fi
# Check if we have a network device at all
if ! ls /sys/class/net/"$interface" > /dev/null 2>&1 && \
! ls /sys/class/net/eth0 > /dev/null 2>&1 && \
! ls /sys/class/net/wlan0 > /dev/null 2>&1 && \
! ls /sys/class/net/ath0 > /dev/null 2>&1 && \
! ls /sys/class/net/ra0 > /dev/null 2>&1
then
panic "No supported network device found, maybe a non-mainline driver is required."
fi
done
}
do_netmount()
{
do_netsetup
if [ "${NFSROOT}" = "auto" ]
then
NFSROOT=${ROOTSERVER}:${ROOTPATH}
fi
rc=1
if ( [ -n "${FETCH}" ] || [ -n "${HTTPFS}" ] || [ -n "${FTPFS}" ] )
then
do_httpmount
return $?
fi
if [ "${NFSROOT#*:}" = "${NFSROOT}" ] && [ "$NETBOOT" != "cifs" ]
then
NFSROOT=${ROOTSERVER}:${NFSROOT}
fi
log_begin_msg "Trying netboot from ${NFSROOT}"
if [ "${NETBOOT}" != "nfs" ] && do_cifsmount
then
rc=0
elif do_nfsmount
then
NETBOOT="nfs"
export NETBOOT
rc=0
fi
log_end_msg
return ${rc}
}
do_iscsi()
{
do_netsetup
#modprobe ib_iser
modprobe iscsi_tcp
local debugopt=""
[ "${DEBUG}" = "Yes" ] && debugopt="-d 8"
#FIXME this name is supposed to be unique - some date + ifconfig hash?
ISCSI_INITIATORNAME="iqn.1993-08.org.debian.live:01:$(echo "${HWADDR}" | sed -e s/://g)"
export ISCSI_INITIATORNAME
if [ -n "${ISCSI_SERVER}" ] ; then
iscsistart $debugopt -i "${ISCSI_INITIATORNAME}" -t "${ISCSI_TARGET}" -g 1 -a "${ISCSI_SERVER}" -p "${ISCSI_PORT}"
else
iscsistart $debugopt -i "${ISCSI_INITIATORNAME}" -t "${ISCSI_TARGET}" -g 1 -a "${ISCSI_PORTAL}" -p 3260
fi
if [ $? != 0 ]
then
panic "Failed to log into iscsi target"
fi
local host="$(ls -d /sys/class/scsi_host/host*/device/iscsi_host:host* \
/sys/class/scsi_host/host*/device/iscsi_host/host* | sed -e 's:/device.*::' -e 's:.*host::')"
if [ -n "${host}" ]
then
local devices=""
local i=0
while [ -z "${devices}" -a $i -lt 60 ]
do
sleep 1
devices="$(ls -d /sys/class/scsi_device/${host}*/device/block:* \
/sys/class/scsi_device/${host}*/device/block/* | sed -e 's!.*[:/]!!')"
i=$(expr $i + 1)
echo -ne $i\\r
done
for dev in $devices
do
if check_dev "null" "/dev/$dev"
then
NETBOOT="iscsi"
export NETBOOT
return 0;
fi
done
panic "Failed to locate a live device on iSCSI devices (tried: $devices)."
else
panic "Failed to locate iSCSI host in /sys"
fi
}
do_httpmount ()
{
rc=1
for webfile in HTTPFS FTPFS FETCH
do
local url="$(eval echo \"\$\{${webfile}\}\")"
local extension="$(echo "${url}" | sed 's/\(.*\)\.\(.*\)/\2/')"
if [ -n "$url" ]
then
case "${extension}" in
iso|squashfs|tgz|tar)
if [ "${extension}" = "iso" ]
then
mkdir -p "${alt_mountpoint}"
dest="${alt_mountpoint}"
else
local dest="${mountpoint}/${LIVE_MEDIA_PATH}"
mount -t ramfs ram "${mountpoint}"
mkdir -p "${dest}"
fi
if [ "${webfile}" = "FETCH" ]
then
case "$url" in
tftp*)
ip="$(dirname $url | sed -e 's|tftp://||g' -e 's|/.*$||g')"
rfile="$(echo $url | sed -e "s|tftp://$ip||g")"
lfile="$(basename $url)"
log_begin_msg "Trying tftp -g -b 10240 -r $rfile -l ${dest}/$lfile $ip"
tftp -g -b 10240 -r $rfile -l ${dest}/$lfile $ip
;;
*)
log_begin_msg "Trying wget ${url} -O ${dest}/$(basename ${url})"
wget "${url}" -O "${dest}/$(basename ${url})"
;;
esac
else
log_begin_msg "Trying to mount ${url} on ${dest}/$(basename ${url})"
if [ "${webfile}" = "FTPFS" ]
then
FUSE_MOUNT="curlftpfs"
url="$(dirname ${url})"
else
FUSE_MOUNT="httpfs"
fi
modprobe fuse
$FUSE_MOUNT "${url}" "${dest}"
ROOT_PID="$(minips h -C "$FUSE_MOUNT" | { read x y ; echo "$x" ; } )"
fi
[ ${?} -eq 0 ] && rc=0
[ "${extension}" = "tgz" ] && live_dest="ram"
if [ "${extension}" = "iso" ]
then
isoloop=$(setup_loop "${dest}/$(basename "${url}")" "loop" "/sys/block/loop*" "" '')
mount -t iso9660 "${isoloop}" "${mountpoint}"
rc=${?}
fi
break
;;
*)
log_begin_msg "Unrecognized archive extension for ${url}"
;;
esac
fi
done
if [ ${rc} != 0 ]
then
if [ -d "${alt_mountpoint}" ]
then
umount "${alt_mountpoint}"
rmdir "${alt_mountpoint}"
fi
umount "${mountpoint}"
elif [ "${webfile}" != "FETCH" ] ; then
NETBOOT="${webfile}"
export NETBOOT
fi
return ${rc}
}
do_nfsmount ()
{
rc=1
modprobe -q nfs
if [ -n "${NFSOPTS}" ]
then
NFSOPTS="-o ${NFSOPTS}"
fi
log_begin_msg "Trying nfsmount -o nolock -o ro ${NFSOPTS} ${NFSROOT} ${mountpoint}"
# FIXME: This while loop is an ugly HACK round an nfs bug
i=0
while [ "$i" -lt 60 ]
do
nfsmount -o nolock -o ro ${NFSOPTS} "${NFSROOT}" "${mountpoint}" && rc=0 && break
sleep 1
i="$(($i + 1))"
done
return ${rc}
}
do_cifsmount ()
{
rc=1
if [ -x "/sbin/mount.cifs" ]
then
if [ -z "${NFSOPTS}" ]
then
CIFSOPTS="-ouser=root,password="
else
CIFSOPTS="-o ${NFSOPTS}"
fi
log_begin_msg "Trying mount.cifs ${NFSROOT} ${mountpoint} ${CIFSOPTS}"
modprobe -q cifs
if mount.cifs "${NFSROOT}" "${mountpoint}" "${CIFSOPTS}"
then
rc=0
fi
fi
return ${rc}
}
do_snap_copy ()
{
fromdev="${1}"
todir="${2}"
snap_type="${3}"
size=$(fs_size "${fromdev}" "" "used")
if [ -b "${fromdev}" ]
then
log_success_msg "Copying snapshot ${fromdev} to ${todir}..."
# look for free mem
if [ -n "${HOMEMOUNTED}" -a "${snap_type}" = "HOME" ]
then
todev=$(awk -v pat="$(base_path ${todir})" '$2 == pat { print $1 }' /proc/mounts)
freespace=$(df -k | awk '/'${todev}'/{print $4}')
else
freespace=$(awk '/^MemFree:/{f=$2} /^Cached:/{c=$2} END{print f+c}' /proc/meminfo)
fi
tomount="/mnt/tmpsnap"
if [ ! -d "${tomount}" ]
then
mkdir -p "${tomount}"
fi
fstype=$(get_fstype "${fromdev}")
if [ -n "${fstype}" ]
then
# Copying stuff...
mount -o ro -t "${fstype}" "${fromdev}" "${tomount}" || log_warning_msg "Error in mount -t ${fstype} -o ro ${fromdev} ${tomount}"
cp -a "${tomount}"/* ${todir}
umount "${tomount}"
else
log_warning_msg "Unrecognized fstype: ${fstype} on ${fromdev}:${snap_type}"
fi
rmdir "${tomount}"
if echo ${fromdev} | grep -qs loop
then
losetup -d "${fromdev}"
fi
return 0
else
log_warning_msg "Unable to find the snapshot ${snap_type} medium"
return 1
fi
}
try_snap ()
{
# copy the contents of previously found snapshot to ${snap_mount}
# and remember the device and filename for resync on exit in live-boot.init
snapdata="${1}"
snap_mount="${2}"
snap_type="${3}"
snap_relpath="${4}"
if [ -z "${snap_relpath}" ]
then
# root snapshot, default usage
snap_relpath="/"
else
# relative snapshot (actually used just for "/home" snapshots)
snap_mount="${2}${snap_relpath}"
fi
if [ -n "${snapdata}" ] && [ ! -b "${snapdata}" ]
then
log_success_msg "found snapshot: ${snapdata}"
snapdev="$(echo ${snapdata} | cut -f1 -d ' ')"
snapback="$(echo ${snapdata} | cut -f2 -d ' ')"
snapfile="$(echo ${snapdata} | cut -f3 -d ' ')"
if ! try_mount "${snapdev}" "${snapback}" "ro"
then
break
fi
RES="0"
if echo "${snapfile}" | grep -qs '\(squashfs\|ext2\|ext3\|ext4\|jffs2\)'
then
# squashfs, jffs2 or ext2/ext3/ext4 snapshot
dev=$(get_backing_device "${snapback}/${snapfile}")
do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
RES="$?"
else
# cpio.gz snapshot
# Unfortunately klibc's cpio is incompatible with the
# rest of the world; everything else requires -u -d,
# while klibc doesn't implement them. Try to detect
# whether it's in use.
cpiopath="$(which cpio)" || true
if [ "$cpiopath" ] && grep -aq /lib/klibc "$cpiopath"
then
cpioargs=
else
cpioargs='--unconditional --make-directories'
fi
if [ -s "${snapback}/${snapfile}" ]
then
BEFOREDIR="$(pwd)"
cd "${snap_mount}" && zcat "${snapback}/${snapfile}" | $cpiopath $cpioargs --extract --preserve-modification-time --no-absolute-filenames --sparse 2>/dev/null
RES="$?"
cd "${BEFOREDIR}"
else
log_warning_msg "${snapback}/${snapfile} is empty, adding it for sync on reboot."
RES="0"
fi
if [ "${RES}" != "0" ]
then
log_warning_msg "failure to \"zcat ${snapback}/${snapfile} | $cpiopath $cpioargs --extract --preserve-modification-time --no-absolute-filenames --sparse\""
fi
fi
umount "${snapback}" || log_warning_msg "failure to \"umount ${snapback}\""
if [ "${RES}" != "0" ]
then
log_warning_msg "Impossible to include the ${snapfile} Snapshot file"
fi
elif [ -b "${snapdata}" ]
then
# Try to find if it could be a snapshot partition
dev="${snapdata}"
log_success_msg "found snapshot ${snap_type} device on ${dev}"
if echo "${dev}" | grep -qs loop
then
# strange things happens, user confused?
snaploop=$( losetup ${dev} | awk '{print $3}' | tr -d '()' )
snapfile=$(basename ${snaploop})
snapdev=$(awk -v pat="$( dirname ${snaploop})" '$2 == pat { print $1 }' /proc/mounts)
else
snapdev="${dev}"
fi
if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
then
log_warning_msg "Impossible to include the ${snap_type} Snapshot (i)"
return 1
else
if [ -n "${snapfile}" ]
then
# it was a loop device, user confused
umount ${snapdev}
fi
fi
else
log_warning_msg "Impossible to include the ${snap_type} Snapshot (o)"
return 1
fi
if [ -z ${PERSISTENCE_READONLY} ]
then
echo "export ${snap_type}SNAP=${snap_relpath}:${snapdev}:${snapfile}" >> snapshot.conf # for resync on reboot/halt
fi
return 0
}
setup_unionfs ()
{
image_directory="${1}"
rootmnt="${2}"
addimage_directory="${3}"
case ${UNIONTYPE} in
aufs|unionfs|overlayfs)
modprobe -q -b ${UNIONTYPE}
if ! cut -f2 /proc/filesystems | grep -q "^${UNIONTYPE}\$" && [ -x /bin/unionfs-fuse ]
then
echo "${UNIONTYPE} not available, falling back to unionfs-fuse."
echo "This might be really slow."
UNIONTYPE="unionfs-fuse"
fi
;;
esac
if [ "${UNIONTYPE}" = unionfs-fuse ]
then
modprobe fuse
fi
# run-init can't deal with images in a subdir, but we're going to
# move all of these away before it runs anyway. No, we're not,
# put them in / since move-mounting them into / breaks mono and
# some other apps.
croot="/"
# Let's just mount the read-only file systems first
rofslist=""
if [ -z "${PLAIN_ROOT}" ]
then
# Read image names from ${MODULE}.module if it exists
if [ -e "${image_directory}/filesystem.${MODULE}.module" ]
then
for IMAGE in $(cat ${image_directory}/filesystem.${MODULE}.module)
do
image_string="${image_string} ${image_directory}/${IMAGE}"
done
elif [ -e "${image_directory}/${MODULE}.module" ]
then
for IMAGE in $(cat ${image_directory}/${MODULE}.module)
do
image_string="${image_string} ${image_directory}/${IMAGE}"
done
else
# ${MODULE}.module does not exist, create a list of images
for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
do
for IMAGE in "${image_directory}"/*."${FILESYSTEM}"
do
if [ -e "${IMAGE}" ]
then
image_string="${image_string} ${IMAGE}"
fi
done
done
if [ -n "${addimage_directory}" ] && [ -d "${addimage_directory}" ]
then
for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
do
for IMAGE in "${addimage_directory}"/*."${FILESYSTEM}"
do
if [ -e "${IMAGE}" ]
then
image_string="${image_string} ${IMAGE}"
fi
done
done
fi
# Now sort the list
image_string="$(echo ${image_string} | sed -e 's/ /\n/g' | sort )"
fi
[ -n "${MODULETORAMFILE}" ] && image_string="${image_directory}/$(basename ${MODULETORAMFILE})"
mkdir -p "${croot}"
for image in ${image_string}
do
imagename=$(basename "${image}")
export image devname
maybe_break live-realpremount
log_begin_msg "Running /scripts/live-realpremount"
run_scripts /scripts/live-realpremount
log_end_msg
if [ -d "${image}" ]
then
# it is a plain directory: do nothing
rofslist="${image} ${rofslist}"
elif [ -f "${image}" ]
then
if losetup --help 2>&1 | grep -q -- "-r\b"
then
backdev=$(get_backing_device "${image}" "-r")
else
backdev=$(get_backing_device "${image}")
fi
fstype=$(get_fstype "${backdev}")
if [ "${fstype}" = "unknown" ]
then
panic "Unknown file system type on ${backdev} (${image})"
fi
if [ -z "${fstype}" ]
then
fstype="${imagename##*.}"
log_warning_msg "Unknown file system type on ${backdev} (${image}), assuming ${fstype}."
fi
if [ "${UNIONTYPE}" != "unionmount" ]
then
mpoint="${croot}/${imagename}"
rofslist="${mpoint} ${rofslist}"
else
mpoint="${rootmnt}"
rofslist="${rootmnt} ${rofslist}"
fi
mkdir -p "${mpoint}"
log_begin_msg "Mounting \"${image}\" on \"${mpoint}\" via \"${backdev}\""
mount -t "${fstype}" -o ro,noatime "${backdev}" "${mpoint}" || panic "Can not mount ${backdev} (${image}) on ${mpoint}"
log_end_msg
fi
done
else
# we have a plain root system
mkdir -p "${croot}/filesystem"
log_begin_msg "Mounting \"${image_directory}\" on \"${croot}/filesystem\""
mount -t $(get_fstype "${image_directory}") -o ro,noatime "${image_directory}" "${croot}/filesystem" || \
panic "Can not mount ${image_directory} on ${croot}/filesystem" && \
rofslist="${croot}/filesystem ${rofslist}"
# probably broken:
mount -o bind ${croot}/filesystem $mountpoint
log_end_msg
fi
# tmpfs file systems
touch /etc/fstab
mkdir -p /live
mount -t tmpfs tmpfs /live
mkdir -p /live/overlay
# Looking for persistence devices or files
if [ -n "${PERSISTENCE}" ] && [ -z "${NOPERSISTENCE}" ]
then
if [ -z "${QUICKUSBMODULES}" ]
then
# Load USB modules
num_block=$(ls -l /sys/block | wc -l)
for module in sd_mod uhci-hcd ehci-hcd ohci-hcd usb-storage
do
modprobe -q -b ${module}
done
udevadm trigger
udevadm settle
# For some reason, udevsettle does not block in this scenario,
# so we sleep for a little while.
#
# See https://bugs.launchpad.net/ubuntu/+source/casper/+bug/84591
for timeout in 5 4 3 2 1
do
sleep 1
if [ $(ls -l /sys/block | wc -l) -gt ${num_block} ]
then
break
fi
done
fi
case "${PERSISTENCE_MEDIA}" in
removable)
whitelistdev="$(removable_dev)"
;;
removable-usb)
whitelistdev="$(removable_usb_dev)"
;;
*)
whitelistdev=""