/etc/powernap/actions/kernel_module is in powernap-common 2.18-0ubuntu2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 | #!/bin/sh
#
# kernel_module: Loads/unloads kernel modules
#
# Copyright (C) 2011 Canonical Ltd.
#
# Authors: Bryce Harrington <bryce@canonoical.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, version 3 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
RUNDIR="/var/run/powernap"
MODULES="${RUNDIR}/modules"
unload_module() {
module_name=$1
lsmod | grep "^$module_name " >/dev/null
if [ $? != 1 ]; then
rmmod ${module_name}
mkdir -p ${MODULES}
echo 'UNLOADED' > ${MODULES}/${module_name}
fi
}
reload_module() {
module_name=$1
lsmod | grep "^${module_name} " >/dev/null
if [ $? = 1 ] && \
[ -e ${MODULES}/${module_name} ]; then
modprobe ${module_name}
echo 'LOADED' > ${MODULES}/${module_name}
fi
}
help() {
echo "Usage: $0 <true|false> <module>"
echo "Ensure given kernel module is [not] loaded"
}
case $1 in
true)
unload_module $2 ;;
false)
reload_module $2 ;;
help)
help ;;
*)
exit $NA ;;
esac
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