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