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

Text File | 2006-05-23 | 4.6 KB | 187 lines

# Sets $virtual; used by other functions here.
check_virtual () {
    open_dialog VIRTUAL $oldid
    read_line virtual
    close_dialog
}

get_ntfs_resize_range () {
    local backupdev num bdev size
    open_dialog GET_VIRTUAL_RESIZE_RANGE $oldid
    read_line minsize cursize maxsize
    close_dialog
    # A weird way to get the real device path.  The partition numbers
    # in parted_server may be changed and the partition table is still
    # not commited to the disk
    backupdev=/var/lib/partman/backup/${dev#/var/lib/partman/devices/}
    if [ -f $backupdev/$oldid/view -a -f $backupdev/device ]; then
    num=$(sed 's/^[^0-9]*\([0-9]*\)[^0-9].*/\1/' $backupdev/$oldid/view)
    bdev=$(cat $backupdev/device)
    case $bdev in
        */disc)
        bdev=${bdev%/disc}/part$num
        ;;
        /dev/[hs]d[a-z])
        bdev=$bdev$num
        ;;
        *)
        log "get_ntfs_resize_range: strange device name $bdev"
        return
        ;;
    esac
    if [ -b $bdev ]; then
        size=$(ntfsresize -f -i $bdev \
        | grep '^You might resize at' \
        | sed 's/^You might resize at \([0-9]*\) bytes.*/\1/' \
        | grep '^[0-9]*$')
        if [ "$size" ]; then
        minsize=$size
        fi
    fi
    fi
}

get_resize_range () {
    open_dialog GET_RESIZE_RANGE $oldid
    read_line minsize cursize maxsize
    close_dialog
}

human_resize_range () {
    hminsize=$(longint2human $minsize)
    hcursize=$(longint2human $cursize)
    hmaxsize=$(longint2human $maxsize)
    minpercent=$((100 * $minsize / $maxsize))
}

ask_for_size () {
    local noninteractive digits minmb
    noninteractive=true
    while true; do
    newsize=''
    while [ ! "$newsize" ]; do
        db_set partman-partitioning/new_size "$hcursize"
        db_subst partman-partitioning/new_size MINSIZE "$hminsize"
        db_subst partman-partitioning/new_size MAXSIZE "$hmaxsize"
        db_subst partman-partitioning/new_size PERCENT "$minpercent%"
        db_input critical partman-partitioning/new_size || $noninteractive
        noninteractive="return 1"
        db_go || return 1
        db_get partman-partitioning/new_size
        case "$RET" in
        max)
            newsize=$maxsize
            ;;
        *%)
            digits=$(expr "$RET" : '\([1-9][0-9]*\) *%$')
            if [ "$digits" ]; then
            maxmb=$(expr 0000000"$maxsize" : '0*\(..*\)......$')
            newsize=$(($digits * $maxmb / 100))000000
            fi
            ;;
        *)
            if valid_human "$RET"; then
            newsize=$(human2longint "$RET")
            fi
            ;;
        esac
        if [ -z "$newsize" ]; then
        db_input high partman-partitioning/bad_new_size || true
        db_go || true
        elif ! longint_le "$newsize" "$maxsize"; then
        db_input high partman-partitioning/big_new_size || true
        db_go || true
        newsize=''
        elif ! longint_le "$minsize" "$newsize"; then
        db_input high partman-partitioning/small_new_size || true
        db_go || true
        newsize=''
        fi
    done
    if perform_resizing; then break; fi
    done
    return 0
}

perform_resizing () {
    if [ "$virtual" = no ]; then
    for s in /lib/partman/commit.d/*; do
        if [ -x $s ]; then
        $s || {
            db_input high partman-partitioning/new_size_commit_failed || true
            db_go || true
            for s in /lib/partman/init.d/*; do
            if [ -x $s ]; then
                $s || exit 100
            fi
            done
            exit 100
        }
        fi
    done
    fi

    disable_swap

    if \
    [ "$virtual" = no ] \
    && [ -f $oldid/detected_filesystem ] \
    && [ "$(cat $oldid/detected_filesystem)" = ntfs ]
    then
    # resize NTFS
    if longint_le "$cursize" "$newsize"; then
        open_dialog VIRTUAL_RESIZE_PARTITION $oldid $newsize
        read_line newid
        close_dialog
        open_dialog COMMIT
        close_dialog
        open_dialog PARTITION_INFO $newid
        read_line x1 x2 x3 x4 x5 path x7
        close_dialog
        echo y | ntfsresize -f $path
    else
        open_dialog COMMIT
        close_dialog
        open_dialog PARTITION_INFO $oldid
        read_line x1 x2 x3 x4 x5 path x7
        close_dialog
        if echo y | ntfsresize -f --size "$newsize" $path; then
        open_dialog VIRTUAL_RESIZE_PARTITION $oldid $newsize
        read_line newid
        close_dialog
        echo y | ntfsresize -f $path
        fi
    fi
    else
    # resize virtual partitions, ext2, ext3, swap, fat16, fat32
    # and probably reiserfs
    name_progress_bar partman-partitioning/progress_resizing
    open_dialog RESIZE_PARTITION $oldid $newsize
    read_line newid
    close_dialog
    fi

    if [ -n "$newid" -a "$newid" != "$oldid" ]; then
    [ ! -e "$newid" ] || rm -rf $newid
    mkdir $newid
    cp -r $oldid/* $newid/
    fi
    if [ "$virtual" = no ]; then
    for s in /lib/partman/init.d/*; do
        if [ -x $s ]; then
        $s || exit 100
        fi
    done
    else
    partitions=''
    open_dialog PARTITIONS
    while { read_line num part size type fs path name; [ "$part" ]; }; do
        partitions="$partitions $part"
    done
    close_dialog
    for part in $partitions; do
        update_partition $dev $part
    done
    fi
}