X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=components%2F9990-misc-helpers.sh;h=fba3d43bcf6433b83c3eaf253e878dcdab23c82e;hb=4574758abec5d6f661742567c14a89c240ccd0b3;hp=70f907a86b647c647b0591f511fe85aa525957e2;hpb=44e7b72fa71425b02ec770b1f3429b27a5cf6c51;p=live-boot-grml.git diff --git a/components/9990-misc-helpers.sh b/components/9990-misc-helpers.sh index 70f907a..fba3d43 100755 --- a/components/9990-misc-helpers.sh +++ b/components/9990-misc-helpers.sh @@ -114,7 +114,7 @@ check_dev () ISO_DEVICE=$(dirname ${ISO_DEVICE}) [ -b "$ISO_DEVICE" ] && break i=$(($i -1)) - done + done fi if [ "$ISO_DEVICE" = "/" ] @@ -420,6 +420,12 @@ is_supported_fs () return 1 fi + # get_fstype might report "unknown" or "swap", ignore it as no such kernel module exists + if [ "${fstype}" = "unknown" ] || [ "${fstype}" = "swap" ] + then + return 1 + fi + # Try to look if it is already supported by the kernel if grep -q ${fstype} /proc/filesystems then @@ -449,7 +455,7 @@ is_supported_fs () get_fstype () { - /sbin/blkid -s TYPE -o value $1 2>/dev/null + blkid -s TYPE -o value $1 2>/dev/null } where_is_mounted () @@ -507,7 +513,7 @@ base_path () { testpath="${1}" mounts="$(awk '{print $2}' /proc/mounts)" - testpath="$(busybox realpath ${testpath})" + testpath="$(realpath ${testpath})" while true do @@ -625,7 +631,7 @@ setup_loop () echo "${passphrase}" > /tmp/passphrase unset passphrase exec 9/dev/null + if ! mount -o move ${old_backing} ${backing} >/dev/null then [ -z "${probe}" ] && log_warning_msg "Failed to move persistence media ${device}" rmdir "${backing}" @@ -772,7 +778,7 @@ close_persistence_media () if is_active_luks_mapping ${device} then - /sbin/cryptsetup luksClose ${device} + cryptsetup luksClose ${device} fi } @@ -786,7 +792,7 @@ open_luks_device () opts="${opts} --readonly" fi - if /sbin/cryptsetup status "${name}" >/dev/null 2>&1 + if cryptsetup status "${name}" >/dev/null 2>&1 then re="^[[:space:]]*device:[[:space:]]*\([^[:space:]]*\)$" opened_dev=$(cryptsetup status ${name} 2>/dev/null | grep "${re}" | sed "s|${re}|\1|") @@ -827,7 +833,7 @@ open_luks_device () while true do $cryptkeyscript "$cryptkeyprompt" | \ - /sbin/cryptsetup -T 1 luksOpen ${dev} ${name} ${opts} + cryptsetup -T 1 luksOpen ${dev} ${name} ${opts} if [ 0 -eq ${?} ] then @@ -868,14 +874,14 @@ get_gpt_name () { local dev dev="${1}" - /sbin/blkid -s PART_ENTRY_NAME -p -o value ${dev} 2>/dev/null + blkid -s PART_ENTRY_NAME -p -o value ${dev} 2>/dev/null } is_gpt_device () { local dev dev="${1}" - [ "$(/sbin/blkid -s PART_ENTRY_SCHEME -p -o value ${dev} 2>/dev/null)" = "gpt" ] + [ "$(blkid -s PART_ENTRY_SCHEME -p -o value ${dev} 2>/dev/null)" = "gpt" ] } probe_for_gpt_name () @@ -915,7 +921,7 @@ probe_for_fs_label () for label in ${overlays} do - if [ "$(/sbin/blkid -s LABEL -o value $dev 2>/dev/null)" = "${label}" ] + if [ "$(blkid -s LABEL -o value $dev 2>/dev/null)" = "${label}" ] then echo "${label}=${dev}" fi @@ -1074,18 +1080,18 @@ find_persistence_media () result=$(probe_for_file_name "${overlays}" ${dev}) if [ -n "${result}" ] then - local loopdevice + local loopdevice loopdevice=${result##*=} - if is_in_comma_sep_list luks ${PERSISTENCE_ENCRYPTION} && is_luks_partition ${loopdevice} + if is_in_comma_sep_list luks ${PERSISTENCE_ENCRYPTION} && is_luks_partition ${loopdevice} then - local luksfile + local luksfile luksfile="" if luksfile=$(open_luks_device "${loopdevice}") then - result=${result%%=*} + result=${result%%=*} result="${result}=${luksfile}" else - losetup -d $loopdevice + losetup -d $loopdevice result="" fi fi @@ -1108,7 +1114,7 @@ find_persistence_media () # Close luks device if it isn't used if [ -z "${result}" ] && [ -n "${luks_device}" ] && is_active_luks_mapping "${luks_device}" then - /sbin/cryptsetup luksClose "${luks_device}" + cryptsetup luksClose "${luks_device}" fi done @@ -1139,13 +1145,13 @@ get_mac () is_luks_partition () { device="${1}" - /sbin/cryptsetup isLuks "${device}" 1>/dev/null 2>&1 + cryptsetup isLuks "${device}" 1>/dev/null 2>&1 } is_active_luks_mapping () { device="${1}" - /sbin/cryptsetup status "${device}" 1>/dev/null 2>&1 + cryptsetup status "${device}" 1>/dev/null 2>&1 } get_luks_backing_device () @@ -1163,6 +1169,10 @@ removable_dev () for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)") do + if [ ! -d "${sysblock}" ]; then + continue + fi + dev_ok= if [ "$(cat ${sysblock}/removable)" = "1" ] then @@ -1208,6 +1218,10 @@ non_removable_dev () for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)") do + if [ ! -d "${sysblock}" ]; then + continue + fi + if [ "$(cat ${sysblock}/removable)" = "0" ] then case "${output_format}" in @@ -1292,23 +1306,8 @@ do_union () rw_opt="rw" ro_opt="rr+wh" noxino_opt="noxino" - ;; - - unionfs-fuse) - rw_opt="RW" - ro_opt="RO" - ;; - - *) - rw_opt="rw" - ro_opt="ro" - ;; - esac - 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_opt}" + unionmountopts="-o noatime,${noxino_opt},dirs=${unionrw}=${rw_opt}" if [ -n "${unionro}" ] then for rofs in ${unionro} @@ -1316,38 +1315,28 @@ do_union () unionmountopts="${unionmountopts}:${rofs}=${ro_opt}" done fi - ( 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 ) ;; overlay) - # XXX: can multiple unionro be used? (overlay only handles two dirs, but perhaps they can be chained?) - # XXX: and can unionro be optional? i.e. can overlay skip lowerdir? - if echo ${unionro} | grep -q " " - then - panic "Multiple lower filesystems are currently not supported with overlay (unionro = ${unionro})." - elif [ -z "${unionro}" ] + # XXX: can unionro be optional? i.e. can overlay skip lowerdir? + if [ -z "${unionro}" ] then panic "overlay needs at least one lower filesystem (read-only branch)." fi - unionmountopts="-o noatime,lowerdir=${unionro},upperdir=${unionrw}" - mount -t ${UNIONTYPE} ${unionmountopts} ${UNIONTYPE} "${unionmountpoint}" - ;; - - *) - unionmountopts="-o noatime,${noxino_opt},dirs=${unionrw}=${rw_opt}" - if [ -n "${unionro}" ] - then - for rofs in ${unionro} - do - unionmountopts="${unionmountopts}:${rofs}=${ro_opt}" - done - fi - mount -t ${UNIONTYPE} ${unionmountopts} ${UNIONTYPE} "${unionmountpoint}" + # Multiple lower layers can now be given using the the colon (":") as a + # separator character between the directory names. + unionro="$(echo ${unionro} | sed -e 's| |:|g')" + # overlayfs requires: + # + a workdir to become mounted + # + workdir and upperdir to reside under the same mount + # + workdir and upperdir to be in separate directories + mkdir "${unionrw}/rw" + mkdir "${unionrw}/work" + unionmountopts="-o noatime,lowerdir=${unionro},upperdir=${unionrw}/rw,workdir=${unionrw}/work" ;; esac + + mount -t ${UNIONTYPE} ${unionmountopts} ${UNIONTYPE} "${unionmountpoint}" } get_custom_mounts () @@ -1609,7 +1598,7 @@ activate_custom_mounts () do_union ${dest} ${source} ${rootfs_dest_backing} elif [ -n "${opt_bind}" ] && [ -z "${PERSISTENCE_READONLY}" ] then - mount --bind "${source}" "${dest}" + mount -o bind "${source}" "${dest}" elif [ -n "${opt_bind}" -o -n "${opt_union}" ] && [ -n "${PERSISTENCE_READONLY}" ] then # bind-mount and union mount are handled the same @@ -1626,6 +1615,13 @@ activate_custom_mounts () mkdir -p ${cow_dir} chown_ref "${source}" "${cow_dir}" chmod_ref "${source}" "${cow_dir}" + if [ "${UNIONTYPE}" = "overlay" ] + then + # When we use overlay we add the "/rw" postfix to our source when using it + # as upper layer. Therefore we also have to add it here when using it as + # the lower layer. + source="${source}/rw" + fi do_union ${dest} ${cow_dir} ${source} ${rootfs_dest_backing} fi