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| author | Daniel Baumann <daniel@debian.org> | 2007-09-23 14:46:36 +0200 |
|---|---|---|
| committer | Daniel Baumann <daniel@debian.org> | 2011-03-09 17:25:50 +0100 |
| commit | 9fc9e2a1a11b0edada38cb501fefe4f58aa414ac (patch) | |
| tree | 7d2d89ecfbd394b41854937ec2342bc7ae530cf5 /scripts/casper | |
| parent | 4bdaa2237c6ae923d1dd068e9024ebceca3f40d9 (diff) | |
| download | live-boot-9fc9e2a1a11b0edada38cb501fefe4f58aa414ac.tar.gz live-boot-9fc9e2a1a11b0edada38cb501fefe4f58aa414ac.zip | |
Adding live-initramfs 1.87.2-1.
Diffstat (limited to 'scripts/casper')
| -rwxr-xr-x | scripts/casper | 549 |
1 files changed, 0 insertions, 549 deletions
diff --git a/scripts/casper b/scripts/casper deleted file mode 100755 index a4c78b3..0000000 --- a/scripts/casper +++ /dev/null @@ -1,549 +0,0 @@ -#!/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=/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 - -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}" - cp -a ${copyfrom}/* ${copyto} # "cp -a" from busybox also copies hidden files - umount ${copyfrom} - mount -r -o move ${copyto} ${copyfrom} - rmdir ${copyto} - return 0 -} - -do_netmount() { - rc=1 - - modprobe "${MP_QUIET}" af_packet # For DHCP - - udevtrigger - udevsettle - - 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="$2" - - modprobe "${MP_QUIET}" -b unionfs - - # 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 - 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 $cowdevice on /cow" - - mount -t unionfs -o dirs=/cow=rw:$rofsstring unionfs "$rootmnt" || panic "Unionfs mount failed" - - # Adding other custom mounts - if [ -n "${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}.${fstype}" - return 0 - fi - done - return 1 -} - -pulsate() { - if [ -x /sbin/usplash_write ]; then - /sbin/usplash_write "PULSATE" - fi -} - -set_usplash_timeout() { - if [ -x /sbin/usplash_write ]; then - /sbin/usplash_write "TIMEOUT 120" - fi -} - -mountroot() { - exec 6>&1 - exec 7>&2 - exec > casper.log - exec 2>&1 - - set_usplash_timeout - [ "$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="${mountpoint}" - else - panic "Unable to find a live file system on the network" - fi - else - # Scan local devices for the image - for i in 0 1 2 3 4 5 6 7 8 9 a b c d e f 10 11 12 13; do - livefs_root=$(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/" -} |
