107 lines
2.9 KiB
Bash
Executable File
107 lines
2.9 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -x
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if [[ "$(id -u)" -ne 0 ]]; then
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>&2 echo "$0: please run this script as root"
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exit 1
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fi
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KICKSTART_BASE="Rocky"
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TODAY="$(TZ='UTC' date +%Y.%m.%d)"
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KICKSTART_FILE="${KICKSTART_BASE}.ks"
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APPLIANCE_NAME="${KICKSTART_BASE}-$(source <(grep VERSION_ID /etc/os-release) && awk -F '.' '{print $1}' <<< $VERSION_ID)-$(uname -m)-minimal-${TODAY}"
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IMAGE_NAME="${APPLIANCE_NAME}.raw"
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COMMANDS_TO_CHECK=('appliance-creator' 'hdparm' 'shasum' 'zstd')
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for COMMAND in "${COMMANDS_TO_CHECK[@]}"; do
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if ! command -v "${COMMAND}" > /dev/null; then
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>&2 echo "$0: ERROR: unable to find command '${COMMAND}' in PATH"
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exit 1
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fi
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done
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if [[ -n "$1" ]]; then
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GUSER="^$1"
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if ! grep $GUSER /etc/shadow > /dev/null; then
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>&2 echo "$0: ERROR: unable to find user '$1'"
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exit 1
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fi
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fi
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function create_new_image {
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UBOOT_MAX_SIZE='64'
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IMAGE_SIZE=$(( $(stat -c '%s' "${IMAGE_NAME}") / 1024 / 1024 ))
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NEW_IMAGE_NAME="${IMAGE_NAME}.new"
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truncate -s "$(( IMAGE_SIZE + UBOOT_MAX_SIZE ))"MiB "${NEW_IMAGE_NAME}"
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LOOPBACK_01=$(losetup -f -P --show "${IMAGE_NAME}")
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LOOPBACK_02=$(losetup -f -P --show "${NEW_IMAGE_NAME}")
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# 1 MiB = 2048 * (1 block/sector (512 bytes))
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UEFI_SECTORS="$(( $(fdisk -l "${LOOPBACK_01}" | grep "${LOOPBACK_01}p1" | awk '{print $4}') + 2048 ))"
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BOOT_SECTORS="$(( $(fdisk -l "${LOOPBACK_01}" | grep "${LOOPBACK_01}p2" | awk '{print $4}') + 4096 ))"
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cat << EOF | fdisk "${LOOPBACK_02}"
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g
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n
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1
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65536
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+${UEFI_SECTORS}
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n
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2
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+${BOOT_SECTORS}
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n
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3
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w
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EOF
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sync; sync; sync; sync;
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sleep 10
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hdparm -z "${LOOPBACK_02}"
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dd bs=4M conv=sync status=progress if="${LOOPBACK_01}p3" of="${LOOPBACK_02}p3"
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dd bs=4M conv=sync status=progress if="${LOOPBACK_01}p2" of="${LOOPBACK_02}p2"
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dd bs=4M conv=sync status=progress if="${LOOPBACK_01}p1" of="${LOOPBACK_02}p1"
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sync; sync; sync; sync;
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sleep 10
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losetup -d "${LOOPBACK_02}"
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losetup -d "${LOOPBACK_01}"
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mv "${NEW_IMAGE_NAME}" "${IMAGE_NAME}"
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sync; sync; sync; sync;
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sleep 10
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}
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script -q -c "appliance-creator \
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--config ${KICKSTART_FILE} \
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--name ${APPLIANCE_NAME} \
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--format raw \
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--outdir ${PWD} \
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--no-compress \
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--debug \
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--cache /root/cache \
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--verbose" | tee "${APPLIANCE_NAME}.log" || exit 1
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# the script command creates a file called typescript
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rm -vf typescript
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if [[ -d "${APPLIANCE_NAME}" ]]; then
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pushd "${APPLIANCE_NAME}" || exit 1
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mv "../${APPLIANCE_NAME}.log" .
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mv "${APPLIANCE_NAME}-sda.raw" "${IMAGE_NAME}"
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create_new_image
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zstd --compress -9 "${IMAGE_NAME}"
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sha512sum -- *.raw* > SHA512SUMS
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sha256sum -- *.raw* > SHA256SUMS
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popd || exit 0
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else
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>&2 echo "$0: ERROR: unable to find the appliance output directory"
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>&2 echo "$0: ${APPLIANCE_NAME}"
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exit 1
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fi
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if [[ -n "$1" ]]; then
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chown "$1":"$1" -vR "${APPLIANCE_NAME}"
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fi
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