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#!/bin/bash
# test a kernel rollback operation
# fail reason: rule
tmpfile=$(mktemp)
if [ ! -w $tmpfile ] ; then
echo "Failed to create tmp file" >&2
exit 0
fi
trap "rm -rf $tmpfile" EXIT # cleanup if aborted
GOOD_RULESET="table ip t {
set t {
type ipv4_addr
elements = { 1.1.1.1 }
}
chain c {
ct state new
tcp dport { 22222 }
ip saddr @t drop
jump other
}
chain other {
}
}"
BAD_RULESET="flush ruleset
table ip t2 {
chain c2 {
this is an invalid rule
}
}"
echo "$GOOD_RULESET" > $tmpfile
$NFT -f $tmpfile
if [ $? -ne 0 ] ; then
echo "E: unable to load good ruleset" >&2
exit 1
fi
echo "$BAD_RULESET" > $tmpfile
$NFT -f $tmpfile 2>/dev/null
if [ $? -eq 0 ] ; then
echo "E: bogus ruleset loaded?" >&2
exit 1
fi
KERNEL_RULESET="$($NFT list ruleset -nn)"
if [ "$GOOD_RULESET" != "$KERNEL_RULESET" ] ; then
DIFF="$(which diff)"
[ -x $DIFF ] && $DIFF -u <(echo "$GOOD_RULESET") <(echo "$KERNEL_RULESET")
exit 1
fi
exit 0
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