+++ /dev/null
-#!/bin/sh
-
-# set -e
-
-export PATH=/root/usr/bin:/root/usr/sbin:/root/bin:/root/sbin:/usr/bin:/usr/sbin:/bin:/sbin
-
-mountpoint=/cdrom
-
-USERNAME=casper
-USERFULLNAME="Live session user"
-HOST=live
-BUILD_SYSTEM=Custom
-
-mkdir -p $mountpoint
-
-[ -f /etc/casper.conf ] && . /etc/casper.conf
-export USERNAME USERFULLNAME HOST BUILD_SYSTEM
-
-. /scripts/casper-helpers
-
-if [ ! -f /casper.vars ]; then
- touch /casper.vars
-fi
-
-# Pendrivelinux fix
-
-parse_cmdline ()
-{
- PRESEEDS=
- # looking for casper specifics options as kernel parameters
- for x in $(cat /proc/cmdline); do
- case $x in
- userfullname=*)
- export USERFULLNAME=${x#userfullname=}
- export CASPERCONF="changed"
- ;;
- hostname=*)
- export HOSTNAME=${x#hostname=}
- export CASPERCONF="changed"
- ;;
- username=*)
- export USERNAME=${x#username=}
- export CASPERCONF="changed"
- ;;
- netboot*)
- export NETBOOT=${x#netboot=} ;;
- access=*)
- export ACCESS=${x#access=} ;;
- xdebconf)
- export XDEBCONF="Yes" ;;
- toram)
- export TORAM="Yes" ;;
- todisk=*)
- export TODISK=${x#todisk=} ;;
- showmounts)
- export SHOWMOUNTS="Yes" ;;
- persistent)
- export PERSISTENT="Yes" ;;
- nopersistent)
- export PERSISTENT="" ;;
- ip*)
- STATICIP=${x#ip=}
- if [ "${STATICIP}" == "" ]; then
- STATICIP="frommedia"
- fi
- export STATICIP ;;
- casper-getty)
- export CASPERGETTY=1 ;;
- bootfrom=*|live-media=*)
- export LIVEMEDIA=${x#*=} ;;
- live-media-encryption=*|encryption=*)
- export LIVEMEDIA_ENCRYPTION=${x#*=} ;;
- live-media-timeout=*)
- export LIVEMEDIA_TIMEOUT=${x#live-media-timeout=} ;;
- live-media-offset=*)
- export LIVEMEDIA_OFFSET=${x#live-media-offset=} ;;
- locale=*|debian-installer/locale=*)
- export LOCALE=${x#*=} ;;
- keyb=*|kbd-chooser/method=*)
- export KBD=${x#*=} ;;
- klayout=*|console-setup/layoutcode=*)
- export KLAYOUT=${x#*=} ;;
- koptions=*)
- export KOPTIONS=${x#koptions=} ;;
- kvariant=*|console-setup/variantcode=*)
- export KVARIANT=${x#*=} ;;
- kmodel=*|console-setup/modelcode=*)
- export KMODEL=${x#*=} ;;
- module=*)
- export MODULE=${x#module=} ;;
- preseed/file=*|file=*)
- export LOCATION="${x#*=}" ;;
- */*=*)
- question="${x%%=*}"
- value="${x#*=}"
- PRESEEDS="${PRESEEDS}\"${question}=${value}\" "
- ;;
- console=*)
- export DEFCONSOLE="${x#*=}" ;;
- esac
- done
-
- # sort of compatibility with netboot.h from linux docs
- if [ -z "${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=order
- fi
-}
-
-# Pendrivelinux fix ended
-
-is_casper_path() {
- path=$1
- if [ -d "$path/casper" ]; then
- if [ "$(echo $path/casper/*.squashfs)" != "$path/casper/*.squashfs" ] ||
- [ "$(echo $path/casper/*.ext2)" != "$path/casper/*.ext2" ] ||
- [ "$(echo $path/casper/*.dir)" != "$path/casper/*.dir" ]; then
- return 0
- fi
- fi
- return 1
-}
-
-get_backing_device() {
- case "$1" in
- *.squashfs|*.ext2)
- echo $(setup_loop "$1" "loop" "/sys/block/loop*")
- ;;
- *.dir)
- echo "directory"
- ;;
- *)
- panic "Unrecognized casper 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="$2"
- if match_files_in_dir "$directory/casper/*.squashfs" ||
- match_files_in_dir "$directory/casper/*.ext2" ||
- match_files_in_dir "$directory/casper/*.dir"; then
- setup_unionfs "$directory/casper" "$rootmnt"
- else
- :
- fi
-}
-
-is_nice_device() {
- sysfs_path="${1#/sys}"
- if /lib/udev/path_id "${sysfs_path}" | grep -E -q "ID_PATH=(usb|pci-[^-]*-[ide|scsi|usb])"; then
- return 0
- fi
- return 1
-}
-
-is_supported_fs () {
- # FIXME: do something better like the scan of supported filesystems
- fstype="${1}"
- case ${fstype} in
- vfat|iso9660|udf|ext2|ext3|ntfs)
- return 0
- ;;
- esac
- return 1
-}
-
-copy_live_to() {
- copyfrom="${1}"
- copytodev="${2}"
- copyto="${copyfrom}_swap"
-
- size=$(fs_size "" ${copyfrom} "used")
-
- if [ "${copytodev}" = "ram" ]; then
- # copying to ram:
- freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( cat /proc/meminfo | grep Cached | head -n 1 | awk '/Cached/{print $2}' - ) )
- mount_options="-o size=${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
- [ "$quiet" != "y" ] && log_warning_msg "${copytodev} is not a block device."
- return 1
- fi
- fi
- if [ "${freespace}" -lt "${size}" ] ; then
- [ "$quiet" != "y" ] && log_warning_msg "Not enough free ${free_string} (${freespace}k > ${size}k) to copy live media in ${copytodev}."
- return 1
- fi
-
- # begin copying..
- mkdir "${copyto}"
- echo "mount -t ${fstype} ${mount_options} ${dev} ${copyto}"
- mount -t "${fstype}" ${mount_options} "${dev}" "${copyto}"
-
- # add by penk
- for target in autorun.inf boot boot.catalog casper info initrd.gz logo.ico misc opt vmlinuz; do
- cp -a ${copyfrom}/${target} ${copyto} # "cp -a" from busybox also copies hidden files
- done
-
- umount ${copyfrom}
- mount -r -o move ${copyto} ${copyfrom}
- rmdir ${copyto}
- return 0
-}
-
-do_netmount() {
- rc=1
-
- modprobe "${MP_QUIET}" af_packet # For DHCP
-
- ipconfig ${DEVICE} /tmp/net-${DEVICE}.conf | tee /netboot.config
-
- if [ "${NFSROOT}" = "auto" ]; then
- NFSROOT=${ROOTSERVER}:${ROOTPATH}
- fi
-
- [ "$quiet" != "y" ] && 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
-
- [ "$quiet" != "y" ] && log_end_msg
- return ${rc}
-}
-
-do_nfsmount() {
- rc=1
- modprobe "${MP_QUIET}" nfs
- if [ -z "${NFSOPTS}" ]; then
- NFSOPTS=""
- fi
-
- [ "$quiet" != "y" ] && log_begin_msg "Trying nfsmount -o nolock -o ro ${NFSOPTS} ${NFSROOT} ${mountpoint}"
- # FIXME: This for loop is an ugly HACK round an nfs bug
- for i in 0 1 2 3 4 5 6 7 8 9 a b c d e f 10 11 12 13; do
- nfsmount -o nolock -o ro ${NFSOPTS} "${NFSROOT}" "${mountpoint}" && rc=0 && break
- sleep 1
- done
- return ${rc}
-}
-
-do_cifsmount() {
- rc=1
- if [ -x "/sbin/mount.cifs" ]; then
- if [ -z "${NFSOPTS}" ]; then
- CIFSOPTS="-ouser=root,password="
- else
- CIFSOPTS="${NFSOPTS}"
- fi
-
- [ "$quiet" != "y" ] && log_begin_msg "Trying mount.cifs ${NFSROOT} ${mountpoint} ${CIFSOPTS}"
- modprobe "${MP_QUIET}" 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 "${fromdev}" ]; then
- # look for free mem
- if [ -n "${HOMEMOUNTED}" -a "${snap_type}" = "HOME" ]; then
- todev=$(cat /proc/mounts | grep -s " $(base_path ${todir}) " | awk '{print $1}' )
- freespace=$(df -k | grep -s ${todev} | awk '{print $4}')
- else
- freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( cat /proc/meminfo | grep Cached | head -n 1 | awk '/Cached/{print $2}' - ))
- fi
-
- tomount="/mnt/tmpsnap"
- if [ ! -d "${tomount}" ] ; then
- mkdir -p "${tomount}"
- fi
-
- fstype=$(get_fstype "${fromdev}")
- if [ -n "${fstype}" ]; then
- # Copying stuff...
- 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
- return 1
- [ "$quiet" != "y" ] && log_warning_msg "Unable to find the snapshot ${snap_type} medium"
- fi
-}
-
-try_snap ()
-{
- # Look for $snap_label.* in block devices and copy the contents to $snap_mount
- # and remember the device and filename for resync on exit in casper.init
-
- snap_label="${1}"
- snap_mount="${2}"
- snap_type="${3}"
-
- snapdata=$(find_files "${snap_label}.squashfs ${snap_label}.cpio.gz ${snap_label}.ext2")
- if [ ! -z "${snapdata}" ]; then
- snapdev="$(echo ${snapdata} | cut -f1 -d ' ')"
- snapback="$(echo ${snapdata} | cut -f2 -d ' ')"
- snapfile="$(echo ${snapdata} | cut -f3 -d ' ')"
- if echo "${snapfile}" | grep -qs '\(squashfs\|ext2\)'; then
- # squashfs or ext2 snapshot
- dev=$(get_backing_device "${snapback}/${snapfile}")
- if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"; then
- log_warning_msg "Impossible to include the ${snapfile} Snapshot"
- return 1
- fi
- else
- # cpio.gz snapshot
- if ! (cd "${snap_mount}" && zcat "${snapback}/${snapfile}" | cpio -i -u -d 2>/dev/null) ; then
- log_warning_msg "Impossible to include the ${snapfile} Snapshot"
- return 1
- fi
- fi
- umount "${snapback}"
- else
- dev=$(find_cow_device "${snap_label}")
- if [ -b ${dev} ]; then
- if echo "${dev}" | grep -qs loop; then
- # strange things happens, user confused?
- snaploop=$( losetup ${dev} | awk '{print $3}' | tr -d '()' )
- snapfile=$(basename ${snaploop})
- snapdev=$(cat /proc/mounts | awk '{print $2,$1}' | grep -es "^$( dirname ${snaploop} )" | cut -f2 -d ' ')
- else
- snapdev="${dev}"
- fi
- if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}" ; then
- log_warning_msg "Impossible to include the ${snap_label} Snapshot"
- return 1
- else
- if [ -n "${snapfile}" ]; then
- # it was a loop device, user confused
- umount ${snapdev}
- fi
- fi
- else
- log_warning_msg "Impossible to include the ${snap_label} Snapshot"
- return 1
- fi
- fi
- echo "export ${snap_type}SNAP="${snap_mount}":${snapdev}:${snapfile}" >> /etc/casper.conf # for resync on reboot/halt
- return 0
-}
-
-setup_unionfs() {
- image_directory="$1"
- rootmnt="$2"
-
- modprobe squashfs
-
- # run-init can't deal with images in a subdir, but we're going to
- # move all of these away before it runs anyway. No, we're not,
- # put them in / since move-mounting them into / breaks mono and
- # some other apps.
-
- croot="/"
-
- # Let's just mount the read-only file systems first
- rofsstring=""
- rofslist=""
- if [ "${NETBOOT}" = "nfs" ] ; then
- roopt="nfsro" # go aroung a bug in nfs-unionfs locking
- else
- roopt="ro"
- fi
-
- mkdir -p "${croot}"
- for image_type in "ext2" "squashfs" "dir" ; do
- for image in "${image_directory}"/*."${image_type}"; do
- imagename=$(basename "${image}")
- if [ -d "${image}" ]; then
- # it is a plain directory: do nothing
- rofsstring="${image}=${roopt}:${rofsstring}"
- rofslist="${image} ${rofslist}"
- elif [ -f "${image}" ]; then
- backdev=$(get_backing_device "$image")
- fstype=$(get_fstype "${backdev}")
- if [ "${fstype}" = "unknown" ]; then
- panic "Unknown file system type on ${backdev} (${image})"
- fi
- if [ -z "${fstype}" ]; then
- fstype=squashfs
- fi
- mkdir -p "${croot}/${imagename}"
- mount -t "${fstype}" -o ro "${backdev}" "${croot}/${imagename}" || panic "Can not mount $backdev ($image) on ${croot}/${imagename}" && rofsstring="${croot}/${imagename}=${roopt}:${rofsstring}" && rofslist="${croot}/${imagename} ${rofslist}"
- fi
- done
- done
- rofsstring=${rofsstring%:}
-
- mkdir -p /cow
- cowdevice="tmpfs"
- cow_fstype="tmpfs"
-
- # Looking for "${root_persistence}" device or file
- if [ -n "${PERSISTENT}" ]; then
- cowprobe=$(find_cow_device "${root_persistence}")
- if [ -b "${cowprobe}" ]; then
- cowdevice=${cowprobe}
- cow_fstype=$(get_fstype "${cowprobe}")
- else
- [ "$quiet" != "y" ] && log_warning_msg "Unable to find the persistent medium"
- fi
- fi
-
- mount ${cowdevice} -t ${cow_fstype} -o rw /cow || panic "Can not mount $cowdevice on /cow"
-
- # add by penk
- if grep -q aufs /proc/cmdline; then
- modprobe aufs
- mount -t aufs -o dirs=/cow=rw:$rofsstring unionfs "$rootmnt" || panic "Unionfs (aufs) mount failed"
- else
- modprobe "${MP_QUIET}" -b unionfs
- mount -t unionfs -o dirs=/cow=rw:$rofsstring unionfs "$rootmnt" || panic "Unionfs (unionfs) mount failed"
- fi
-
- # Adding other custom mounts
- if [ -n "${PERSISTENT}" ]; then
- # directly mount /home
- # FIXME: add a custom mounts configurable system
- homecow=$(find_cow_device "${home_persistence}" )
- if [ -b "${homecow}" ]; then
- mount -t $(get_fstype "${homecow}") -o rw "${homecow}" "${rootmnt}/home"
- export HOMEMOUNTED=1 # used to proper calculate free space in do_snap_copy()
- else
- [ "$quiet" != "y" ] && log_warning_msg "Unable to find the persistent home medium"
- fi
- # Look for other snapshots to copy in
- try_snap "${root_snapshot_label}" "${rootmnt}" "ROOT"
- try_snap "${home_snapshot_label}" "${rootmnt}/home" "HOME"
- fi
-
- if [ -n "${SHOWMOUNTS}" ]; then
- for d in ${rofslist}; do
- mkdir -p "${rootmnt}/casper/${d##*/}"
- case d in
- *.dir) # do nothing # mount -o bind "${d}" "${rootmnt}/casper/${d##*/}"
- ;;
- *) mount -o move "${d}" "${rootmnt}/casper/${d##*/}"
- ;;
- esac
- done
- # shows cow fs on /cow for use by casper-snapshot
- mkdir -p "${rootmnt}/cow"
- mount -o bind /cow "${rootmnt}/cow"
- fi
-
- # move the first mount; no head in busybox-initramfs
- for d in $(mount -t squashfs | cut -d\ -f 3); do
- mkdir -p "${rootmnt}/rofs"
- mount -o move "${d}" "${rootmnt}/rofs"
- break
- done
-}
-
-check_dev ()
-{
- sysdev="${1}"
- devname="${2}"
- if [ -z "${devname}" ]; then
- devname=$(sys2dev "${sysdev}")
- fi
-
- if [ -n "${LIVEMEDIA_OFFSET}" ]; then
- loopdevname=$(setup_loop "${devname}" "loop" "/sys/block/loop*" "${LIVEMEDIA_OFFSET}")
- devname="${loopdevname}"
- fi
-
- fstype=$(get_fstype "${devname}")
- if is_supported_fs ${fstype}; then
- mount -t ${fstype} -o ro "${devname}" $mountpoint || continue
- if is_casper_path $mountpoint; then
- echo $mountpoint
- return 0
- else
- umount $mountpoint
- fi
- fi
-
- if [ -n "${LIVEMEDIA_OFFSET}" ]; then
- losetup -d "${loopdevname}"
- fi
- return 1
-}
-
-find_livefs() {
- timeout="${1}"
- # first look at the one specified in the command line
- if [ ! -z "${LIVEMEDIA}" ]; then
- if check_dev "null" "${LIVEMEDIA}"; then
- return 0
- fi
- fi
- # don't start autodetection before timeout has expired
- if [ -n "${LIVEMEDIA_TIMEOUT}" ]; then
- if [ "${timeout}" -lt "${LIVEMEDIA_TIMEOUT}" ]; then
- return 1
- fi
- fi
- # or do the scan of block devices
- for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -v loop | grep -v ram); do
- devname=$(sys2dev "${sysblock}")
- fstype=$(get_fstype "${devname}")
- if /lib/udev/cdrom_id ${devname} > /dev/null; then
- if check_dev "null" "${devname}" ; then
- return 0
- fi
- elif is_nice_device "${sysblock}" ; then
- for dev in $(subdevices "${sysblock}"); do
- if check_dev "${dev}" ; then
- return 0
- fi
- done
- elif [ "${fstype}" = "squashfs" -o \
- "${fstype}" = "ext3" -o \
- "${fstype}" = "ext2" ]; then
- # This is an ugly hack situation, the block device has
- # an image directly on it. It's hopefully
- # casper, so take it and run with it.
- ln -s "${devname}" "${devname}.${fstype}"
- echo "${devname}.${fstype}"
- return 0
- fi
- done
- return 1
-}
-
-pulsate() {
- if [ -x /sbin/usplash_write ]; then
- /sbin/usplash_write "PULSATE"
- fi
-}
-
-set_usplash_timeout() {
- if [ -x /sbin/usplash_write ]; then
- /sbin/usplash_write "TIMEOUT 120"
- fi
-}
-
-mountroot() {
- exec 6>&1
- exec 7>&2
- exec > casper.log
- exec 2>&1
-
- # add by penk
- parse_cmdline
-
- set_usplash_timeout
- [ "$quiet" != "y" ] && log_begin_msg "Running /scripts/casper-premount"
- pulsate
- run_scripts /scripts/casper-premount
- [ "$quiet" != "y" ] && log_end_msg
-
- # Needed here too because some things (*cough* udev *cough*)
- # changes the timeout
-
- set_usplash_timeout
-
- if [ ! -z "${NETBOOT}" ]; then
- if do_netmount ; then
- livefs_root="${mountpoint}"
- else
- panic "Unable to find a the network rootfs live file system"
- fi
- else
- # Scan local devices for the image
- for i in 0 1 2 3 4 5 6 7 8 9 a b c d e f 10 11 12 13; do
- livefs_root=$(find_livefs $i)
- if [ "${livefs_root}" ]; then
- break
- fi
- sleep 1
- done
- fi
-
- if [ -z "${livefs_root}" ]; then
- panic "Unable to find a medium containing a live file system"
- fi
-
- if [ "${TORAM}" ]; then
- live_dest="ram"
- elif [ "${TODISK}" ]; then
- live_dest="${TODISK}"
- fi
- if [ "${live_dest}" ]; then
- log_begin_msg "Copying live_media to ${live_dest}"
- copy_live_to "${livefs_root}" "${live_dest}"
- log_end_msg
- fi
-
- mount_images_in_directory "${livefs_root}" "${rootmnt}"
-
- log_end_msg
-
- maybe_break casper-bottom
- [ "$quiet" != "y" ] && log_begin_msg "Running /scripts/casper-bottom"
-
- pulsate
- run_scripts /scripts/casper-bottom
- [ "$quiet" != "y" ] && log_end_msg
-
- exec 1>&6 6>&-
- exec 2>&7 7>&-
- cp casper.log "${rootmnt}/var/log/"
-}
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