burrow-pi-img/export-noobs/prerun.sh

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2016-05-27 10:56:23 +00:00
#!/bin/bash -e
IMG_FILE="${STAGE_WORK_DIR}/${IMG_DATE}-${IMG_NAME}${IMG_SUFFIX}.img"
NOOBS_DIR="${STAGE_WORK_DIR}/${IMG_DATE}-${IMG_NAME}${IMG_SUFFIX}"
unmount_image ${IMG_FILE}
mkdir -p ${STAGE_WORK_DIR}
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cp ${WORK_DIR}/export-image/${IMG_DATE}-${IMG_NAME}${IMG_SUFFIX}.img ${STAGE_WORK_DIR}/
rm -rf ${STAGE_WORK_DIR}/${IMG_DATE}-${IMG_NAME}${IMG_SUFFIX}
PARTED_OUT=$(parted -s ${IMG_FILE} unit b print)
BOOT_OFFSET=$(echo "$PARTED_OUT" | grep -e '^ 1'| xargs echo -n \
| cut -d" " -f 2 | tr -d B)
BOOT_LENGTH=$(echo "$PARTED_OUT" | grep -e '^ 1'| xargs echo -n \
| cut -d" " -f 4 | tr -d B)
ROOT_OFFSET=$(echo "$PARTED_OUT" | grep -e '^ 2'| xargs echo -n \
| cut -d" " -f 2 | tr -d B)
ROOT_LENGTH=$(echo "$PARTED_OUT" | grep -e '^ 2'| xargs echo -n \
| cut -d" " -f 4 | tr -d B)
BOOT_DEV=$(losetup --show -f -o ${BOOT_OFFSET} --sizelimit ${BOOT_LENGTH} ${IMG_FILE})
ROOT_DEV=$(losetup --show -f -o ${ROOT_OFFSET} --sizelimit ${ROOT_LENGTH} ${IMG_FILE})
echo "/boot: offset $BOOT_OFFSET, length $BOOT_LENGTH"
echo "/: offset $ROOT_OFFSET, length $ROOT_LENGTH"
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mkdir -p ${STAGE_WORK_DIR}/rootfs
mkdir -p ${NOOBS_DIR}
mount $ROOT_DEV ${STAGE_WORK_DIR}/rootfs
mount $BOOT_DEV ${STAGE_WORK_DIR}/rootfs/boot
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bsdtar --format gnutar --use-compress-program pxz -C ${STAGE_WORK_DIR}/rootfs/boot -cpf ${NOOBS_DIR}/boot.tar.xz .
umount ${STAGE_WORK_DIR}/rootfs/boot
bsdtar --format gnutar --use-compress-program pxz -C ${STAGE_WORK_DIR}/rootfs --one-file-system -cpf ${NOOBS_DIR}/root.tar.xz .
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unmount_image ${IMG_FILE}