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#!/bin/bash
#
# Copied from tripleo-image-element's sysctl element
#
# Validate and manage setting sysctl settings.
#
# The script is called with name/value pairs which are stored
# in the system default sysctl.d directory. Before adding new
# settings a validation is done to ensure that conflicting
# sysctl settings have not been requested. Once finished sysctl
# is used to activate the changes.
if [ ${DIB_DEBUG_TRACE:-0} -gt 0 ]; then
set -x
fi
set -eu
set -o pipefail
NAME=${1:-}
VALUE=${2:-}
# Optional comment used to describe the setting
COMMENT=${3:-"This file was created by diskimage-builder."}
if [ -z "$NAME" -o -z "$VALUE" ]; then
echo "NAME and VALUE are required."
exit 1
fi
FILENAME="/etc/sysctl.d/${NAME}.conf"
if [ -f $FILENAME ]; then
# check to make sure the settings match... otherwise fail
if ! grep -q "^$NAME = $VALUE" $FILENAME; then
echo "Conflicting sysctl.conf setting for $NAME == $VALUE. Found:"
grep "^$NAME" $FILENAME
exit 1
fi
else
if ! sysctl -a | grep -q "^$NAME"; then
echo "Invalid sysctl key: $NAME"
exit 1
fi
sysctl-write-value $NAME "$VALUE" "$COMMENT"
sysctl -p $FILENAME
fi
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