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build: add resize img

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Signed-off-by: AuxXxilium <info@auxxxilium.tech>
This commit is contained in:
AuxXxilium 2023-11-04 11:06:23 +01:00
parent 92b38f4c54
commit ce153408a8
1 changed files with 32 additions and 0 deletions
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32
scripts/func.sh
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@ -237,4 +237,36 @@ function repackInitrd() {
sudo find . 2>/dev/null | sudo cpio -o -H newc -R root:root | xz --check=crc32 >"${OUTPUT_PATH}"
) || true
sudo rm -rf "${RDXZ_PATH}"
}
# resizeimg
# $1 input file
# $2 changsize MB eg: +50M -50M
# $3 output file
function resizeImg() {
INPUT_FILE="${1}"
CHANGE_SIZE="${2}"
OUTPUT_FILE="${3:-${INPUT_FILE}}"
[ -z "${INPUT_FILE}" -o ! -f "${INPUT_FILE}" ] && exit 1
[ -z "${CHANGE_SIZE}" ] && exit 1
INPUT_FILE="$(readlink -f "${INPUT_FILE}")"
OUTPUT_FILE="$(readlink -f "${OUTPUT_FILE}")"
SIZE=$(($(du -m "${INPUT_FILE}" | awk '{print $1}')$(echo "${CHANGE_SIZE}" | sed 's/M//g; s/b//g')))
[ -z "${SIZE}" -o "${SIZE}" -lt 0 ] && exit 1
if [ ! "${INPUT_FILE}" = "${OUTPUT_FILE}" ]; then
sudo cp -f "${INPUT_FILE}" "${OUTPUT_FILE}"
fi
sudo truncate -s ${SIZE}M "${OUTPUT_FILE}"
echo -e "d\n\nn\n\n\n\n\nn\nw" | sudo fdisk "${OUTPUT_FILE}"
LOOPX=$(sudo losetup -f)
sudo losetup -P ${LOOPX} "${OUTPUT_FILE}"
sudo e2fsck -fp $(ls ${LOOPX}* | sort -n | tail -1)
sudo resize2fs $(ls ${LOOPX}* | sort -n | tail -1)
sudo losetup -d ${LOOPX}
}