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#!/usr/bin/env bash
set -eux -o pipefail
readonly self="$(readlink -f "${BASH_SOURCE[0]}")"
readonly script_name="$(basename "${self}")"
usage() {
cat >&2 <<-EOF
Usage: ${script_name} confirm
This script reverts the changes applied by the setup_machine.sh script.
It may be useful for debugging the setup_machine.sh script on new operating systems.
It should be used __only__ by advanced users, who know what this script does.
You need root permissions to run this script.
EOF
exit 1
}
if [[ ${1} != confirm ]]; then
usage >&2
fi
shift
for username in saunafstest_{0..9}; do
if getent passwd ${username} > /dev/null; then
userdel ${username}
fi
done
if getent passwd saunafstest > /dev/null; then
userdel saunafstest
fi
if getent group saunafstest > /dev/null; then
groupdel saunafstest
fi
rm -f /etc/sudoers.d/saunafstest
rm -rf /var/lib/saunafstest
rm -f /etc/security/limits.d/10-saunafstests.conf
rm -f /etc/saunafs_tests.conf
rm -f /etc/sysctl.d/60-ip_port_range.conf
mountpoint /mnt/ramdisk && umount /mnt/ramdisk
rm -rf /mnt/ramdisk
sed -i -e "/### Reload pam limits on sudo - necessary for saunafs tests. ###/d" /etc/pam.d/sudo
sed -i -e "/session required pam_limits.so/d" /etc/pam.d/sudo
sed -i -e "/# Ramdisk used in SaunaFS tests/d" /etc/fstab
sed -i -e "\[ramdisk /mnt/ramdisk tmpfs mode=1777,size=2g[d" /etc/fstab
sed -i -e "/# Loop devices used in SaunaFS tests/d" /etc/fstab
temp_file=$(mktemp -p /tmp revert_setup_machine-etc-fstab.XXXXXXXXXX)
cp /etc/fstab "${temp_file}"
while IFS=$'\n' read -r line ; do
file_system=$(echo "${line}" | awk '{print $1}')
file_system_directory=$(dirname "${file_system}")
mount_point=$(echo "${line}" | awk '{print $2}')
mountpoint "${mount_point}" && umount -d "${mount_point}"
[ -d "${mount_point}" ] && rmdir --ignore-fail-on-non-empty --parents "${mount_point}"
rm -f "${file_system}"
[ -d "${file_system_directory}" ] && rmdir --ignore-fail-on-non-empty --parents "${file_system_directory}"
sed -i -e "\@${line}@d" /etc/fstab
done < <(grep "saunafstest_loop" "${temp_file}")
rm "${temp_file}"
set +x
echo "Reverted successfully"
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