PC Welt 2006 November (DVD)/PCWELT_11_2006.ISO/casper/filesystem.squashfs/lib/partman/auto-shared.sh

Text File | 2006-07-03 | 4.7 KB | 188 lines

## this file contains a bunch of shared code between partman-auto
## and partman-auto-lvm.

wipe_disk() {
    cd $dev

    open_dialog LABEL_TYPES
    types=$(read_list)
    close_dialog

    label_type=$(default_disk_label)

    if ! expr "$types" : ".*${label_type}.*" >/dev/null; then
        label_type=msdos # most widely used
    fi

    # Use gpt instead of msdos disklabel for disks larger than 2TB
    if expr "$types" : ".*gpt.*" >/dev/null; then
        if [ "$label_type" = msdos ] ; then
            disksize=$(cat size)
            if $(longint_le $(human2longint 2TB) $disksize) ; then
                label_type=gpt
            fi
        fi
    fi

    if [ "$label_type" = sun ]; then
        db_input critical partman/confirm_write_new_label
        db_go || exit 0
        db_get partman/confirm_write_new_label
        if [ "$RET" = false ]; then
            db_reset partman/confirm_write_new_label
            exit 1
        fi
        db_reset partman/confirm_write_new_label
        # XXX hack of death. This will make sure that the partiton label is cleared
        # and only on sun labels otherwise bad things can happen.
        dddevice=$(cat device)
        log-output -t auto-shared dd if=/dev/zero of=$dddevice bs=512 count=1
    fi

    open_dialog NEW_LABEL "$label_type"
    close_dialog

    if [ "$label_type" = sun ]; then
        # write the partition table to the disk
        disable_swap
        open_dialog COMMIT
        close_dialog
        sync
        # reread it from there
        open_dialog UNDO
        close_dialog
        enable_swap
    fi

    # Different types partition tables support different visuals.  Some
    # have partition names other don't have, some have extended and
    # logical partitions, others don't.  Hence we have to regenerate the
    # list of the visuals
    rm -f visuals

    free_space=''
    open_dialog PARTITIONS
    while { read_line num id size type fs path name; [ "$id" ]; }; do
        if [ "$fs" = free ]; then
            free_space=$id
            free_size=$size
            free_type=$type
        fi
    done
    close_dialog
}

### XXXX: i am not 100% sure if this is exactly what this code is doing.
### XXXX: rename is of course an option. Just remember to do it here, in
### XXXX: perform_recipe and in partman-auto-lvm
create_primary_partitions() {

    cd $dev

    while
        [ "$free_type" = pri/log ] \
        && echo $scheme | grep '\$primary{' >/dev/null
    do
        pull_primary
        set -- $primary
        open_dialog NEW_PARTITION primary $4 $free_space beginning ${1}000001
        read_line num id size type fs path name
        close_dialog
        if [ -z "$id" ]; then
        db_progress STOP
        autopartitioning_failed
        fi
        neighbour=$(partition_after $id)
        if [ "$neighbour" ]; then
        open_dialog PARTITION_INFO $neighbour
        read_line x1 new_free_space x2 new_free_type fs x3 x4
        close_dialog
        fi
        if
        [ -z "$neighbour" -o "$fs" != free \
          -o "$new_free_type" = primary -o "$new_free_type" = unusable ]
        then
        open_dialog DELETE_PARTITION $id
        close_dialog
        open_dialog NEW_PARTITION primary $4 $free_space end ${1}000001
        read_line num id size type fs path name
        close_dialog
        if [ -z "$id" ]; then
            db_progress STOP
            autopartitioning_failed
        fi
        neighbour=$(partition_before $id)
        if [ "$neighbour" ]; then
            open_dialog PARTITION_INFO $neighbour
            read_line x1 new_free_space x2 new_free_type fs x3 x4
            close_dialog
        fi
        if
            [ -z "$neighbour" -o "$fs" != free -o "$new_free_type" = unusable ]
        then
            open_dialog DELETE_PARTITION $id
            close_dialog
            break
        fi
        fi
        shift; shift; shift; shift
        setup_partition $id $*
        primary=''
        scheme="$logical"
        free_space=$new_free_space
        free_type="$new_free_type"
    done
}

create_partitions() {
foreach_partition '
    if [ -z "$free_space" ]; then
        db_progress STOP
    autopartitioning_failed
    fi
    open_dialog PARTITION_INFO $free_space
    read_line x1 free_space x2 free_type fs x3 x4
    close_dialog
    if [ "$fs" != free ]; then
        free_type=unusable
    fi
    case "$free_type" in
    primary|logical)
        type="$free_type"
        ;;
    pri/log)
        type=logical
        ;;
    unusable)
            db_progress STOP
        autopartitioning_failed
        ;;
    esac
    if [ "$last" = yes ]; then
        open_dialog NEW_PARTITION $type $4 $free_space full ${1}000001
    else
        open_dialog NEW_PARTITION $type $4 $free_space beginning ${1}000001
    fi
    read_line num id size type fs path name
    close_dialog
    if [ -z "$id" ]; then
        db_progress STOP
    autopartitioning_failed
    fi
    # Mark the partition LVM only if it is actually LVM and add it to vgpath
    if echo "$*" | grep -q "method{ lvm }"; then
    devfspv_devices="$devfspv_devices $path"
    open_dialog GET_FLAGS $id
    flags=$(read_paragraph)
    close_dialog
    open_dialog SET_FLAGS $id
    write_line "$flags"
    write_line lvm
    write_line NO_MORE
    close_dialog
    fi
    shift; shift; shift; shift
    setup_partition $id $*
    free_space=$(partition_after $id)'
}