X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=scripts%2Flive;h=e2489373255df46c1b698cc500fa3f8c5619af6c;hb=f7b2f82c34ad572bbf178da3a18ccaa317332196;hp=5af7ad8e93dedb6047859ce68f4c3eea56c12851;hpb=c44e830d8c1ef4e8aa2db197c098a32333fecff0;p=live-boot-grml.git diff --git a/scripts/live b/scripts/live index 5af7ad8..e248937 100755 --- a/scripts/live +++ b/scripts/live @@ -11,11 +11,6 @@ mountpoint="/live/image" alt_mountpoint="/media" LIVE_MEDIA_PATH="live" -root_persistence="live-rw" -home_persistence="home-rw" -root_snapshot_label="live-sn" -home_snapshot_label="home-sn" - USERNAME="user" USERFULLNAME="Live user" HOSTNAME="host" @@ -41,394 +36,6 @@ then touch /live.vars 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="${ARGUMENT#persistent-storage=}" - export PERSISTENT_STORAGE - ;; - - persistent-subtext=*) - root_persistence="${root_persistence}-${ARGUMENT#persistent-subtext=}" - home_persistence="${home_persistence}-${ARGUMENT#persistent-subtext=}" - root_snapshot_label="${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 ${PERSISTENT_ENCRYPTION} | grep -qe "\" - then - if ! modprobe dm-crypt - then - log_warning_msg "Unable to load module dm-crypt" - PERSISTENT_ENCRYPTION=$(echo ${PERSISTENT_ENCRYPTION} | sed -e 's/\" then - overlays="${root_persistence} ${home_persistence}" + overlays="${root_overlay_label} ${old_root_overlay_label} ${old_home_overlay_label} ${custom_overlay_label}" fi if echo ${PERSISTENT_METHOD} | grep -qe "\" @@ -1413,41 +1009,55 @@ setup_unionfs () snapshots="${root_snapshot_label} ${home_snapshot_label}" fi - - for media in $(find_persistent_media "${overlays}" "${snapshots}" "${blacklistdev}" "${whitelistdev}") + local root_snapdata="" + local home_snapshot_label="" + local root_overlay_label="" + local overlay_devices="" + for media in $(find_persistent_media "${overlays}" "${snapshots}" "${whitelistdev}") do media="$(echo ${media} | tr ":" " ")" case ${media} in - ${root_persistence}=*) - cowprobe="${media#*=}" - ;; - ${home_persistence}=*) - homecow="${media#*=}" - ;; - ${root_snapshot_label}=*) - root_snapdata="${media#*=}" + ${root_snapshot_label}=*|${old_root_snapshot_label}=*) + if [ -z "${root_snapdata}" ] + then + root_snapdata="${media#*=}" + fi ;; ${home_snapshot_label}=*) # This second type should be removed when snapshot will get smarter, # hence when "/etc/live-snapshot*list" will be supported also by # ext2|ext3|ext4|jffs2 snapshot types. - home_snapdata="${media#*=}" + if [ -z "${home_snapdata}" ] + then + home_snapdata="${media#*=}" + fi ;; - *) + ${root_overlay_label}=*|${old_root_overlay_label}=*) + if [ -z "${root_overlay_device}" ] + then + device="${media#*=}" + root_overlay_device="${device}" + fi + ;; + ${old_home_overlay_label}=*) + device="${media#*=}" + fix_home_rw_compatibility ${device} + overlay_devices="${overlay_devices} ${device}" + ;; + ${custom_overlay_label}=*) + device="${media#*=}" + overlay_devices="${overlay_devices} ${device}" ;; esac done - if [ -b "${cowprobe}" ] || [ -b "${homecow}" ] + if [ -b "${root_overlay_device}" ] then PERSISTENCE_IS_ON="1" export PERSISTENCE_IS_ON - fi - if [ -b "${cowprobe}" ] - then - cowdevice=${cowprobe} - cow_fstype=$(get_fstype "${cowprobe}") + cowdevice=${root_overlay_device} + cow_fstype=$(get_fstype "${root_overlay_device}") if [ -z "${PERSISTENT_READONLY}" ] then cow_mountopt="rw,noatime" @@ -1498,26 +1108,28 @@ setup_unionfs () then if [ -n "${PERSISTENT_READONLY}" ] then - persistent_root="/$(basename ${cowdevice})-backing" - mkdir -p ${persistent_root} + mount -t tmpfs -o rw,noatime,mode=755 tmpfs "/cow" + root_backing="${rootmnt}/live/persistent/$(basename ${cowdevice})-root" + mkdir -p ${root_backing} else - persistent_root="/cow" + root_backing="/cow" fi if [ "${cow_fstype}" = "nfs" ] then log_begin_msg \ - "Trying nfsmount ${nfs_cow_opts} ${cowdevice} ${persistent_root}" - nfsmount ${nfs_cow_opts} ${cowdevice} ${persistent_root} || \ - panic "Can not mount ${cowdevice} (n: ${cow_fstype}) on ${persistent_root}" + "Trying nfsmount ${nfs_cow_opts} ${cowdevice} ${root_backing}" + nfsmount ${nfs_cow_opts} ${cowdevice} ${root_backing} || \ + panic "Can not mount ${cowdevice} (n: ${cow_fstype}) on ${root_backing}" else - mount -t ${cow_fstype} -o ${cow_mountopt} ${cowdevice} ${persistent_root} || \ - panic "Can not mount ${cowdevice} (o: ${cow_fstype}) on ${persistent_root}" + mount -t ${cow_fstype} -o ${cow_mountopt} ${cowdevice} ${root_backing} || \ + panic "Can not mount ${cowdevice} (o: ${cow_fstype}) on ${root_backing}" fi fi rofscount=$(echo ${rofslist} |wc -w) + # XXX: we now ensure that there can only be one read-only filesystem. Should this be inside the EXPOSED_ROOT if? if [ ${rofscount} -ne 1 ] then panic "only one RO file system supported with exposedroot: ${rofslist}" @@ -1545,48 +1157,26 @@ setup_unionfs () #panic "unionmount does not support subunions (${cow_dirs})." fi - unionmountopts="" - unionmountpoint="" - for dir in ${cow_dirs}; do - mkdir -p /cow${dir} - unionmountpoint="${rootmnt}${dir}" - unionrw="/cow${dir}" - unionro="${rofs}${dir}" - # We don't handle spaces and other junk gracefully here, hopefully not needed. - case "${UNIONTYPE}" in - unionfs-fuse) - unionmountopts="-o cow -o noinitgroups -o default_permissions -o allow_other -o use_ino -o suid" - unionmountopts="${unionmountopts} ${unionrw}=RW:${unionro}=RO" - ( sysctl -w fs.file-max=391524 ; ulimit -HSn 16384 - unionfs-fuse ${unionmountopts} "${unionmountpoint}" ) && \ - ( mkdir -p /run/sendsigs.omit.d - pidof unionfs-fuse >> /run/sendsigs.omit.d/unionfs-fuse || true ) - ;; - - unionmount) - unionmountopts="-t ${cow_fstype} -o noatime,union,${cow_mountopt} ${cowdevice}" - mount_full $unionmountopts "${unionmountpoint}" - ;; - - overlayfs) - unionmountopts="-o noatime,${noxino_opt},lowerdir=${unionro},upperdir=${unionrw}" - mount -t ${UNIONTYPE} ${unionmountopts} ${UNIONTYPE} "${unionmountpoint}" - ;; - - *) - if [ -n "${PERSISTENT_READONLY}" ] - then - mount -t tmpfs -o rw,noatime,mode=755 tmpfs "${unionrw}" - unionmountopts="-o noatime,${noxino_opt}dirs=${unionrw}=rw:${persistent_root}=${roopt}:${unionro}=${roopt}" - else - unionmountopts="-o noatime,${noxino_opt}dirs=${unionrw}=rw:${unionro}=${roopt}" - fi - mount -t ${UNIONTYPE} ${unionmountopts} ${UNIONTYPE} "${unionmountpoint}" - ;; - esac || \ - panic "mount ${UNIONTYPE} on ${unionmountpoint} failed with option ${unionmountopts}" + mkdir -p ${unionmountpoint} + if [ "${UNIONTYPE}" = "unionmount" ] + then + # FIXME: handle PERSISTENT_READONLY + unionmountopts="-t ${cow_fstype} -o noatime,union,${cow_mountopt} ${cowdevice}" + mount_full $unionmountopts "${unionmountpoint}" + else + cow_dir="/cow${dir}" + rofs_dir="${rofs}${dir}" + mkdir -p ${cow_dir} + if [ -n "${PERSISTENT_READONLY}" ] && [ "${cowdevice}" != "tmpfs" ] + then + #mount -t tmpfs -o rw,noatime,mode=755 tmpfs "${cow_dir}" + do_union ${unionmountpoint} ${cow_dir} ${root_backing} ${rofs_dir} + else + do_union ${unionmountpoint} ${cow_dir} ${rofs_dir} + fi + fi || panic "mount ${UNIONTYPE} on ${unionmountpoint} failed with option ${unionmountopts}" done # Correct the permissions of /: @@ -1597,55 +1187,28 @@ setup_unionfs () mkdir -p "${rootmnt}/live" mount -t tmpfs tmpfs ${rootmnt}/live - # Adding other custom mounts - if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ] - then - # directly mount /home - # FIXME: add a custom mounts configurable system - - if [ -b "${homecow}" ] - then - if [ -z "${PERSISTENT_READONLY}" ] - then - mount -t $(get_fstype "${homecow}") -o rw,noatime "${homecow}" "${rootmnt}/home" - else - homerw="/cow/home" - homero="/$(basename ${homecow})-backing" - homemountpoint="${rootmnt}/home" - mkdir -p ${homerw} ${homero} ${homemountpoint} - mount -t $(get_fstype "${homecow}") -o ro "${homecow}" "${homero}" - mount -t "${UNIONTYPE}" -o "noatime,${noxino_opt}dirs=${homerw}=rw:${homero}=${roopt}" "${UNIONTYPE}" "${homemountpoint}" - fi - export HOMEMOUNTED=1 # used to proper calculate free space in do_snap_copy() - else - log_warning_msg "Unable to find the persistent home medium" - fi - - # Look for other snapshots to copy in - try_snap "${root_snapdata}" "${rootmnt}" "ROOT" - # This second type should be removed when snapshot grow smarter - try_snap "${home_snapdata}" "${rootmnt}" "HOME" "/home" - fi - - if [ -n "${SHOWMOUNTS}" ] + live_rofs_list="" + # SHOWMOUNTS is necessary for custom mounts with the union option + # Since we may want to do custom mounts in user-space it's best to always enable SHOWMOUNTS + if true #[ -n "${SHOWMOUNTS}" ] || ( [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ] 1) then + # XXX: is the for loop really necessary? rofslist can only contain one item (see above XXX about EXPOSEDROOT) and this is also assumed elsewhere above (see use of $rofs above). for d in ${rofslist} do - mkdir -p "${rootmnt}/live/${d##*/}" - + live_rofs="${rootmnt}/live/rofs/${d##*/}" + live_rofs_list="${live_rofs_list} ${live_rofs}" + mkdir -p "${live_rofs}" case d in *.dir) - # do nothing # mount -o bind "${d}" "${rootmnt}/live/${d##*/}" + # do nothing # mount -o bind "${d}" "${live_rofs}" ;; - *) case "${UNIONTYPE}" in unionfs-fuse) - mount -o bind "${d}" "${rootmnt}/live/${d##*/}" + mount -o bind "${d}" "${live_rofs}" ;; - *) - mount -o move "${d}" "${rootmnt}/live/${d##*/}" + mount -o move "${d}" "${live_rofs}" ;; esac ;; @@ -1653,6 +1216,37 @@ setup_unionfs () done fi + # Adding custom persistent + if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ] + then + local custom_mounts="/tmp/custom_mounts.list" + rm -rf ${custom_mounts} 2> /dev/null + + # Gather information about custom mounts from devies detected as overlays + get_custom_mounts ${custom_mounts} ${overlay_devices} + + [ -n "${DEBUG}" ] && cp ${custom_mounts} "${rootmnt}/live/persistent" + + # Now we do the actual mounting (and symlinking) + local used_overlays="" + used_overlays=$(activate_custom_mounts ${custom_mounts}) + rm ${custom_mounts} + + # Close unused overlays (e.g. due to missing $persistence_list) + for overlay in ${overlay_devices} + do + if echo ${used_overlays} | grep -qve "^\(.* \)\?${device}\( .*\)\?$" + then + close_persistent_media ${overlay} + fi + done + + # Look for other snapshots to copy in + try_snap "${root_snapdata}" "${rootmnt}" "ROOT" + # This second type should be removed when snapshot grow smarter + try_snap "${home_snapdata}" "${rootmnt}" "HOME" "/home" + fi + # shows cow fs on /cow for use by live-snapshot mkdir -p "${rootmnt}/live/cow" mount -o move /cow "${rootmnt}/live/cow" >/dev/null 2>&1 || mount -o bind /cow "${rootmnt}/live/cow" || log_warning_msg "Unable to move or bind /cow to ${rootmnt}/live/cow"