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https://github.com/CopterExpress/clover.git
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126 lines
4.6 KiB
Bash
Executable File
126 lines
4.6 KiB
Bash
Executable File
#!/bin/bash
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set -e
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echo_bold() {
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# STATIC FUNCTION
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# TEMPLATE: echo_bold <TEXT> <TYPE>
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# TYPE: SUCCESS, ERROR, INFO
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# More info there https://www.shellhacks.com/ru/bash-colors/
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TEXT="$1"
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TEXT="\e[1m$TEXT\e[0m" # BOLD
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case "$2" in
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SUCCESS)
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TEXT="\e[32m${TEXT}\e[0m";; # GREEN
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ERROR)
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TEXT="\e[31m${TEXT}\e[0m";; # RED
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*)
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TEXT="\e[34m${TEXT}\e[0m";; # BLUE
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esac
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echo -e ${TEXT}
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}
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if [ $(whoami) != "root" ]; then
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echo \
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&& echo "********************************************************************" \
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&& echo "******************** This should be run as root ********************" \
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&& echo "********************************************************************" \
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&& echo \
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&& exit 1
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fi
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if [[ -z $1 ]]; then
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echo "================================================================================"
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echo_bold "Automatic Image file resizer"
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echo_bold "Description: This script shrink your image to 10MiB free space"
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echo -e "if you didn't set FREE_SPACE in MiB (see usage below)."
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echo_bold "Authors: Artem Smirnov @urpylka, SirLagz"
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echo
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echo_bold "Usage: ./autosizer.sh PATH_TO_IMAGE FREE_SPACE"
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echo
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echo_bold "Requirements: parted, losetup, e2fsck, resize2fs, bc, truncate"
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echo "================================================================================"
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exit 0
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fi
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echo "================================================================================"
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strImgFile=$1
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echo_bold "Path to image: $strImgFile"
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echo "================================================================================"
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if [[ ! -e $strImgFile ]]; then
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echo_bold "Error: File doesn't exist"
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echo
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exit 1
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fi
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echo "================================================================================"
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partinfo=`parted -m $strImgFile unit B print`
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echo_bold "Partition information:\n$partinfo"
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echo "================================================================================"
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partnumber=`echo "$partinfo" | grep ext4 | awk -F: '{ print $1 }'`
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echo_bold "Partition number: $partnumber"
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echo "================================================================================"
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partstart=`echo "$partinfo" | grep ext4 | awk -F: '{ print substr($2,0,length($2)-1) }'`
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echo_bold "Partition start: $partstart (bytes)"
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echo "================================================================================"
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loopback=`losetup -f --show -o $partstart $strImgFile`
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echo_bold "Loopback device: $loopback"
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echo "================================================================================"
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set +e
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e2fsck -fvy $loopback
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set -e
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echo "================================================================================"
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minsize=`resize2fs -P $loopback | awk -F': ' '{ print $2 }'`
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#minsize=`resize2fs -P $loopback 2> /dev/null | awk -F': ' '{ print $2 }'`
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echo_bold "Minsize: $minsize (4KiB)"
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echo "================================================================================"
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# Default add 10MiB free space to image, if $2 doesn't set
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FREE_SPACE=${2:-10}
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FREE_SPACE=$(($FREE_SPACE*1024*1024/4096))
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minsize=`echo "$minsize+$FREE_SPACE" | bc`
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echo_bold "Minsize + $FREE_SPACE (4KiB): $minsize (4KiB)"
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echo "================================================================================"
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resize2fs -p $loopback $minsize
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sleep 1
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losetup -d $loopback
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echo "================================================================================"
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partnewsize=`echo "$minsize * 4096" | bc`
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echo_bold "New size of part: $minsize (4KiB) = $partnewsize (bytes)"
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echo "================================================================================"
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newpartend=`echo "$partstart + $partnewsize" | bc`
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echo_bold "New end of part (Part start + part new size):"
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echo_bold "$partstart (bytes) + $partnewsize (bytes) = $newpartend (bytes)"
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echo "================================================================================"
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part1=`parted $strImgFile rm 2`
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echo "================================================================================"
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part2=`parted $strImgFile unit B mkpart primary $partstart $newpartend`
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echo "================================================================================"
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endresult=`parted -m $strImgFile unit B print free | tail -1 | awk -F: '{ print substr($2,0,length($2)-1) }'`
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echo_bold "Size of result image: $endresult (bytes)"
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echo "================================================================================"
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truncate -s $endresult $strImgFile
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echo "================================================================================"
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partinfo=`parted -m $strImgFile unit B print`
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echo_bold "Partition information:\n$partinfo"
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echo "================================================================================"
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