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A utility script to extract the root filesystem from an sdcard image for use in mobile phone chroots.

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Cyteen 2017-11-15 18:28:16 +00:00
parent 6919b20d0c
commit f2339566b4
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extract_chroot_image.sh Normal file
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# Extract an image from devuan released images for use in mobile phone chroots.
# Fetch the image, for Samsung S4 we need a armhf image.
#https://files.devuan.org/devuan_jessie/embedded/devuan_jessie_1.0.0_armhf_sunxi.img.xz
#https://files.devuan.org/devuan_jessie/embedded/devuan_jessie_1.0.0_armhf_raspi2.img.xz
#https://files.devuan.org/devuan_jessie/embedded/devuan_jessie_1.0.0_armhf_odroidxu.img.xz
#https://files.devuan.org/devuan_jessie/embedded/devuan_jessie_1.0.0_armhf_n900.img.xz
#https://files.devuan.org/devuan_jessie/embedded/devuan_jessie_1.0.0_armhf_chromeveyron.img.xz
#https://files.devuan.org/devuan_jessie/embedded/devuan_jessie_1.0.0_armhf_chromeacer.img.xz
FILE_URL=https://files.devuan.org/devuan_jessie/embedded
XZIMAGE=$1|devuan_jessie_1.0.0_armhf_sunxi.img.xz
IMAGE=${XZIMAGE%\.*}
wget -c ${FILE_URL}/${XZIMAGE}
# uncompress
unxz ${XZIMAGE}
# Mount the partitions
apt-get install -y kpartx
kpartx -a -v ${IMAGE}
TMP_MNT=/tmp/kpartx-mnt
mkdir -p ${TMP_MNT}
mount /dev/mapper/loop0p2 ${TMP_MNT}
tar czvf linux-rootfs.tar.gz -C ${TMP_MNT} .
umount ${TMP_MNT}
rm ${IMAGE}