mirror of https://github.com/CIRCL/Circlean
47 lines
1.6 KiB
Bash
Executable File
47 lines
1.6 KiB
Bash
Executable File
#!/bin/bash
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# This script will mount a given image in loop mode.
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# Make sure to change the path and offsets for the image you use. You can get
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# the correct offsets using `file $PATH_TO_IMAGE` or fdisk.
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# To make debugging easier
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echo "KittenGroomer: in mount_image.sh" 1>&2
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if [ "$(id -u)" != "0" ]; then
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echo "This script must be run as root" 1>&2
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exit 1
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fi
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set -e
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set -x
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# Double check the path and offsets as noted above!
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# Path to the image
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IMAGE='2018-01-29_CIRCLean.img'
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# Start sector of boot (first) partition
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BOOT_START=`sfdisk -J ${IMAGE} | grep img1 | sed -n 's/.*"start": \([[:digit:]]*\).*/\1/p'`
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# Amount of sectors of boot (first) partition
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BOOT_SIZE=`sfdisk -J ${IMAGE} | grep img1 | sed -n 's/.*"size": \([[:digit:]]*\).*/\1/p'`
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# Start sector of root (second) partition
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ROOT_START=`sfdisk -J ${IMAGE} | grep img2 | sed -n 's/.*"start": \([[:digit:]]*\).*/\1/p'`
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# Amount of sectors of root (second) partition
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ROOT_SIZE=`sfdisk -J ${IMAGE} | grep img2 | sed -n 's/.*"size": \([[:digit:]]*\).*/\1/p'`
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# Locations you'd like the partitions mounted
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BOOT_PATH='/mnt/rpi-boot'
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ROOTFS_PATH='/mnt/rpi-root'
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# Calculate offsets for each partition
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offset_boot=$((${BOOT_START} * 512))
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sizelimit_boot=$((${BOOT_SIZE} * 512))
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offset_rootfs=$((${ROOT_START} * 512))
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sizelimit_rootfs=$((${ROOT_SIZE} * 512))
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# TODO: add logic for creating directories if they aren't already there
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mkdir -p ${BOOT_PATH}
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mkdir -p ${ROOTFS_PATH}
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# Mount each partition in loop mode
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mount -o loop,offset=${offset_boot},sizelimit=${sizelimit_boot} ${IMAGE} ${BOOT_PATH}
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mount -o loop,offset=${offset_rootfs},sizelimit=${sizelimit_rootfs} ${IMAGE} ${ROOTFS_PATH}
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echo "Image mounted" 1>&2
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