69 lines
2 KiB
Bash
Executable file
69 lines
2 KiB
Bash
Executable file
#!/bin/bash -e
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IMG_FILE="${STAGE_WORK_DIR}/${IMG_FILENAME}${IMG_SUFFIX}.img"
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unmount_image "${IMG_FILE}"
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rm -f "${IMG_FILE}"
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rm -rf "${ROOTFS_DIR}"
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mkdir -p "${ROOTFS_DIR}"
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BOOT_SIZE=$(du --apparent-size -s "${EXPORT_ROOTFS_DIR}/boot" --block-size=1 | cut -f 1)
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TOTAL_SIZE=$(du --apparent-size -s "${EXPORT_ROOTFS_DIR}" --exclude var/cache/apt/archives --block-size=1 | cut -f 1)
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ROUND_SIZE="$((4 * 1024 * 1024))"
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ROUNDED_ROOT_SECTOR=$(((2 * BOOT_SIZE + ROUND_SIZE) / ROUND_SIZE * ROUND_SIZE / 512 + 8192))
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IMG_SIZE=$(((BOOT_SIZE + TOTAL_SIZE + (800 * 1024 * 1024) + ROUND_SIZE - 1) / ROUND_SIZE * ROUND_SIZE))
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truncate -s "${IMG_SIZE}" "${IMG_FILE}"
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fdisk -H 255 -S 63 "${IMG_FILE}" <<EOF
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o
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n
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8192
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+$((BOOT_SIZE * 2 /512))
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p
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t
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c
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n
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${ROUNDED_ROOT_SECTOR}
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p
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w
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EOF
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PARTED_OUT=$(parted -s "${IMG_FILE}" unit b print)
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BOOT_OFFSET=$(echo "$PARTED_OUT" | grep -e '^ 1'| xargs echo -n \
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| cut -d" " -f 2 | tr -d B)
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BOOT_LENGTH=$(echo "$PARTED_OUT" | grep -e '^ 1'| xargs echo -n \
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| cut -d" " -f 4 | tr -d B)
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ROOT_OFFSET=$(echo "$PARTED_OUT" | grep -e '^ 2'| xargs echo -n \
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| cut -d" " -f 2 | tr -d B)
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ROOT_LENGTH=$(echo "$PARTED_OUT" | grep -e '^ 2'| xargs echo -n \
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| cut -d" " -f 4 | tr -d B)
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BOOT_DEV=$(losetup --show -f -o "${BOOT_OFFSET}" --sizelimit "${BOOT_LENGTH}" "${IMG_FILE}")
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ROOT_DEV=$(losetup --show -f -o "${ROOT_OFFSET}" --sizelimit "${ROOT_LENGTH}" "${IMG_FILE}")
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echo "/boot: offset $BOOT_OFFSET, length $BOOT_LENGTH"
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echo "/: offset $ROOT_OFFSET, length $ROOT_LENGTH"
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ROOT_FEATURES="^huge_file"
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for FEATURE in metadata_csum 64bit; do
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if grep -q "$FEATURE" /etc/mke2fs.conf; then
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ROOT_FEATURES="^$FEATURE,$ROOT_FEATURES"
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fi
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done
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mkdosfs -n boot -F 32 -v "$BOOT_DEV" > /dev/null
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mkfs.ext4 -L rootfs -O "$ROOT_FEATURES" "$ROOT_DEV" > /dev/null
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mount -v "$ROOT_DEV" "${ROOTFS_DIR}" -t ext4
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mkdir -p "${ROOTFS_DIR}/boot"
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mount -v "$BOOT_DEV" "${ROOTFS_DIR}/boot" -t vfat
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rsync -aHAXx --exclude var/cache/apt/archives "${EXPORT_ROOTFS_DIR}/" "${ROOTFS_DIR}/"
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