#!/bin/sh . ./init_functions.sh source_deviceinfo mount_loopback_device() { loopback_img=postmarketOS.img partitions="/dev/mmcblk0p29 /dev/mmcblk0p30 /dev/mmcblk0p31" mkdir /tmpmnt for part in $partitions; do mount -o ro $part /tmpmnt if [ -f "/tmpmnt/$loopback_img" ]; then mount -o remount,rw /tmpmnt loopback_device=$(losetup -f) losetup $loopback_device "/tmpmnt/$loopback_img" kpartx -afs $loopback_device return 0 fi umount /tmpmnt done } mount_loopback_device