/usr/share/bilibop/make_unpersistent_rules is in bilibop-rules 0.4.20.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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set -e
# /usr/share/bilibop/make_unpersistent_rules
# Remove some persistent udev rules files (cd & net) and replace them by links
# to unpersistent files (in /run/udev/rules.d); ...or restore them.
# This is made because these persistent rules files are cumulative, and so are
# not very adapted for an operating system on external hard disk or usb key.
### BEGIN ###
PATH="/sbin:/bin:/usr/bin"
PROG="${0##*/}"
SOPTS="ho:rsv"
LOPTS="help,only:,restore,status,verbose"
ETC_RULES_DIR="/etc/udev/rules.d"
RUN_RULES_DIR="/run/udev/rules.d"
if [ -f /etc/udev/udev.conf ]; then
. /etc/udev/udev.conf
fi
udev_root="${udev_root:-/dev}"
udev_root="${udev_root%/}"
status=""
restore=""
verbose=""
only=""
TYPE=""
SKIP=""
short_usage() {
cat <<EOF
Usage:
${PROG} -h|--help
${PROG} -s|--status
${PROG} [-v|--verbose] [-r|--restore] [-o|--only cd|net]
EOF
}
usage() {
cat <<EOF
${PROG} replaces some persistent udev rules files by
links to unpersistent files (in ${RUN_RULES_DIR}).
This is done to avoid cumulative informations about optical drives
and network interfaces.
Usage: ${PROG} [OPTIONS]
OPTIONS:
-h, --help
Display this help and exit.
-o TYPE, --only TYPE
Apply actions only for the specified TYPE of rules (cd or net).
-r, --restore
Remove links to unpersistent rules files and restore persistent
(static) udev rules files.
-s, --status
Display the status of each rules file and exit.
-v, --verbose
Be verbose.
EOF
}
execute() {
if [ -n "${verbose}" ]; then
echo "> ${@}"
fi
"${@}"
}
set +e
### Parse options ##############################################################
ARGS="$(getopt -o ${SOPTS} --long ${LOPTS} -n ${PROG} -- "${@}")"
if [ "${?}" != "0" ]; then
short_usage >&2
exit 1
else
eval set -- "${ARGS}"
fi
################################################################################
set -e
while true; do
case "${1}" in
-h|--help)
usage
exit 0
;;
-o|--only)
only="${2}"
shift 2
;;
-r|--restore)
restore="true"
shift
;;
-s|--status)
status="true"
shift
;;
-v|--verbose)
verbose="-v"
shift
;;
--)
shift
break
;;
*)
unknown_argument "${1}" >&2
short_usage >&2
exit 1
;;
esac
done
if [ "${status}" = "true" ]; then
for rules in 70-persistent-cd.rules 70-persistent-net.rules; do
printf "%s\t" "${rules}"
if [ -h "${ETC_RULES_DIR}/${rules}" ]; then
printf "%s " ":link: ->"
readlink -f ${ETC_RULES_DIR}/${rules}
elif [ -f "${ETC_RULES_DIR}/${rules}" ]; then
printf "%s " ":file: =="
ls ${ETC_RULES_DIR}/${rules}
else
printf "%s\n" ":none: ()"
fi
done
exit 0
fi
# Now, analyse the results.
case "${only}" in
cd)
TYPE="cd"
SKIP="net"
;;
net)
TYPE="net"
SKIP="cd"
;;
"")
TYPE="cd net"
SKIP=""
;;
*)
unknown_argument "${only}" >&2
short_usage >&2
exit 1
;;
esac
make_regular() {
persistent="${ETC_RULES_DIR}/70-persistent-${1}.rules"
if [ -h "${persistent}" ]; then
unpersistent="$(readlink -f ${persistent})"
execute rm ${verbose} ${persistent}
if [ -f "${unpersistent}" ]; then
execute mv ${verbose} ${unpersistent} ${persistent}
else
execute touch ${persistent}
fi
elif [ ! -f "${persistent}" ]; then
unpersistent="${RUN_RULES_DIR}/70-persistent-${1}.rules"
if [ -f "${unpersistent}" ]; then
execute mv ${verbose} ${unpersistent} ${persistent}
else
execute touch ${persistent}
fi
fi
}
make_symlink() {
persistent="${ETC_RULES_DIR}/70-persistent-${1}.rules"
unpersistent="${RUN_RULES_DIR}/70-persistent-${1}.rules"
if [ -h "${persistent}" ]; then
target="$(readlink -f ${persistent})"
if [ "${target}" = "${unpersistent}" ]; then
[ -f "${target}" ] || execute touch ${target}
# nothing else to do:
continue
else
#[ -d "${RUN_RULES_DIR}" ] || execute mkdir -p ${RUN_RULES_DIR}
[ -f "${target}" ] && execute mv ${verbose} ${target} ${unpersistent}
execute rm ${verbose} ${persistent}
fi
elif [ -f "${persistent}" ]; then
#[ -d "${RUN_RULES_DIR}" ] || execute mkdir -p ${RUN_RULES_DIR}
execute mv ${verbose} ${persistent} ${unpersistent}
fi
#[ -e "${persistent}" ] && execute rm ${verbose} ${persistent}
[ -e "${unpersistent}" ] || execute touch ${unpersistent}
execute ln -s ${verbose} ${unpersistent} ${persistent}
}
# And run...
if [ "${restore}" = "true" ]; then
for i in ${TYPE}; do
make_regular ${i}
done
for i in ${SKIP}; do
make_symlink ${i}
done
else
for i in ${TYPE}; do
make_symlink ${i}
done
for i in ${SKIP}; do
make_regular ${i}
done
fi
### END ###
# vim: ts=4 sts=4 sw=4
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