mirror of
https://github.com/Start9Labs/start-os.git
synced 2026-03-26 02:11:53 +00:00
99 lines
2.8 KiB
Bash
Executable File
99 lines
2.8 KiB
Bash
Executable File
#!/bin/bash
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set -e
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function mktmpfifo () {
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TMP_PATH=$(mktemp)
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rm $TMP_PATH
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mkfifo $TMP_PATH
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echo $TMP_PATH
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}
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if ! which pv > /dev/null; then
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>&2 echo 'This script would like to use `pv` to show a progress indicator, but it is not installed.'
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if which apt-get > /dev/null; then
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read -p "Install? [y/N]" -n 1 -r
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echo
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if [[ "$REPLY" =~ ^[Yy]$ ]]; then
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sudo apt-get install pv
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fi
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elif which pacman > /dev/null; then
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read -p "Install? [y/N]" -n 1 -r
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echo
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if [[ "$REPLY" =~ ^[Yy]$ ]]; then
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sudo pacman -S pv
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fi
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elif which brew > /dev/null; then
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read -p "Install? [y/N]" -n 1 -r
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echo
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if [[ "$REPLY" =~ ^[Yy]$ ]]; then
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brew install pv
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fi
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else
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>&2 echo 'This script does not recognize what package manager you have available on your system.'
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>&2 echo 'Please go install the utility manually if you want progress reporting.'
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fi
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fi
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if [[ "$(uname)" == "Darwin" ]]; then
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>&2 echo 'OSX not supported'
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exit 1
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fi
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if ! test -e /dev/disk/by-label/green; then
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>&2 echo '`green` partition not found'
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exit 1
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fi
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export SOURCE_PARTITION=$(readlink -f /dev/disk/by-label/green)
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if [[ "$SOURCE_PARTITION" =~ ^/dev/loop ]]; then
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>&2 echo 'You are currently ripping from a loop device.'
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>&2 echo 'This is probably a mistake, and usually means you failed to detach a .img file.'
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read -p "Continue anyway? [y/N]" -n 1 -r
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echo
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if ! [[ "$REPLY" =~ ^[Yy]$ ]]; then
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exit 1
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fi
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fi
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sudo e2fsck -f ${SOURCE_PARTITION}
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sudo resize2fs -M ${SOURCE_PARTITION}
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export BLOCK_INFO=$(sudo dumpe2fs ${SOURCE_PARTITION})
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export BLOCK_COUNT=$(echo "$BLOCK_INFO" | grep "Block count:" | sed 's/Block count:\s\+//g')
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export BLOCK_SIZE=$(echo "$BLOCK_INFO" | grep "Block size:" | sed 's/Block size:\s\+//g')
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export FS_SIZE=$[$BLOCK_COUNT*$BLOCK_SIZE]
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echo "Ripping $FS_SIZE bytes from $SOURCE_PARTITION"
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if which pv > /dev/null; then
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sudo cat ${SOURCE_PARTITION} | head -c $FS_SIZE | pv -s $FS_SIZE | sudo dd of=update.img bs=1M iflag=fullblock oflag=direct conv=fsync 2>/dev/null
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else
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sudo cat ${SOURCE_PARTITION} | head -c $FS_SIZE | sudo dd of=update.img bs=1M iflag=fullblock oflag=direct conv=fsync
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fi
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echo Verifying...
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export INPUT_HASH=$(mktemp)
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export OUTPUT_HASH=$(mktemp)
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if which pv > /dev/null; then
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export PV_IN=$(mktmpfifo)
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fi
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sudo cat ${SOURCE_PARTITION} | head -c $FS_SIZE | tee -a $PV_IN | sha256sum > $INPUT_HASH &
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export INPUT_CHILD=$!
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sudo cat update.img | head -c $FS_SIZE | tee -a $PV_IN | sha256sum > $OUTPUT_HASH &
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export OUTPUT_CHILD=$!
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if which pv > /dev/null; then
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pv -s $[$FS_SIZE*2] < $PV_IN > /dev/null &
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fi
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wait $INPUT_CHILD $OUTPUT_CHILD
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if which pv > /dev/null; then
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rm $PV_IN
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fi
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if ! [[ "$(cat $INPUT_HASH)" == "$(cat $OUTPUT_HASH)" ]]; then
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rm $INPUT_HASH $OUTPUT_HASH
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>&2 echo Verification Failed
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exit 1
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fi
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rm $INPUT_HASH $OUTPUT_HASH
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echo "Verification Succeeded"
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sudo e2label update.img red
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echo "Image Relabeled to \"red\""
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