SliTaz Repositories

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/mirror-tools/stuff/host/boot/lguest-disk	Sun Aug 08 19:48:39 2010 +0200
     1.3 @@ -0,0 +1,59 @@
     1.4 +#!/bin/sh
     1.5 +
     1.6 +usage()
     1.7 +{
     1.8 +	cat << EOT
     1.9 +resize2fs
    1.10 +usage: 
    1.11 +$0 grow <guest> <size>[MG]
    1.12 +$0 fixmbr <guest>
    1.13 +EOT
    1.14 +	exit 1
    1.15 +}
    1.16 +
    1.17 +grow()
    1.18 +{
    1.19 +	case "$2" in
    1.20 +	*M)	dd if=/dev/zero bs=1M count=${2%M} >> /boot/guests/$1 ;;
    1.21 +	*G)	dd if=/dev/zero bs=1G count=${2%G} >> /boot/guests/$1 ;;
    1.22 +	esac
    1.23 +}
    1.24 +
    1.25 +# write a 32 bits data
    1.26 +# usage: storelong offset data32 file
    1.27 +storelong()
    1.28 +{
    1.29 +	printf "00000  %02X %02X %02X %02X \n" \
    1.30 +		$(( $2 & 255 )) $(( ($2>>8) & 255 )) \
    1.31 +		$(( ($2>>16) & 255 )) $(( ($2>>24) & 255 )) | \
    1.32 +	hexdump -R | dd bs=1 conv=notrunc of=$3 seek=$(( $1 )) 2> /dev/null
    1.33 +}
    1.34 +
    1.35 +# read a 32 bits data
    1.36 +# usage: getlong offset file
    1.37 +getlong()
    1.38 +{
    1.39 +	dd if=$2 bs=1 skip=$(( $1 )) count=4 2> /dev/null | \
    1.40 +		hexdump -e '"" 1/4 "%d" "\n"'
    1.41 +}
    1.42 +
    1.43 +fixmbr()
    1.44 +{
    1.45 +	if [ $(getlong 0x1ea $1) -ne 0 -a $(getlong 0x1fa $1) -ne 0 ]; then
    1.46 +		echo "Parttion 3 & 4 non empty. Abort"
    1.47 +		exit 1
    1.48 +	fi
    1.49 +	if [ $(getlong 0x1da $1) -eq 0 ]; then
    1.50 +		echo "Parttion 2 empty. Abort"
    1.51 +		exit 1
    1.52 +	fi
    1.53 +	size=$(stat -c %s $1)
    1.54 +	new=$(( $size/512 - 32 - $(getlong 0x1ca $1) ))
    1.55 +	storelong 0x1da $new $1
    1.56 +}
    1.57 +
    1.58 +case "$1" in
    1.59 +grow)	shift; grow $@ ; fixmbr $1 ;;
    1.60 +fixmbr) shift; fixmbr $1 ;;
    1.61 +*)	usage ;;
    1.62 +esac