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#!/bin/sh
mount_overlay() {
if ! mount overlay /etc -t overlay -o defaults,lowerdir=/etc,upperdir=/var/persist/etc,workdir=/var/persist/etc-work; then
mount overlay /etc -t overlay -o defaults,lowerdir=/etc:/var/persist/etc
fi
}
if ! mount ubi0:rwfs /var -t ubifs -o defaults; then
if ! mount ubi0:rwfs /var -t ubifs -o defaults,ro; then
mount tmpfs /var -t tmpfs -o defaults
fi
fi
mkdir -p /var/persist/etc /var/persist/etc-work /var/persist/home/root
rm -rf /var/persist/etc-work/*
# rm -rf specifically skips . and .. directories; pipe all output to null to avoid the error message
rm -rf /var/persist/etc-work/.* > /dev/null 2>&1
mount_overlay
# Check if there are any issues accessing the files in /etc after mounting the
# overlay by doing an 'ls' command
error="/var/overlay-error"
cd /var/persist/etc/
for i in *; do
# Only check regular files at the top of the directory
if [[ -f $i ]]; then
ls -i /etc/$i >/dev/null 2>${error};
if [[ -s ${error} ]]; then
# We don't have a way to print this error to the journal, delete it
rm -f ${error}
# Attempt to re-create the overlay by moving out the overlay contents and
# copying them back to /etc, which would create them back in the overlay
cd
umount /etc
rm -rf /var/persist/etc-save
mv /var/persist/etc /var/persist/etc-save
mkdir -p /var/persist/etc
mount_overlay
cp -rp /var/persist/etc-save/* /etc/
rm -rf /var/persist/etc-save
break
fi
fi
done
exec /lib/systemd/systemd
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