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kernel/SOURCES/mod-extra-blacklist.sh

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#!/bin/bash
list="$1"
buildroot=${list%/*}
blacklist()
{
cat > "$buildroot/etc/modprobe.d/$1-blacklist.conf" <<-__EOF__
# This kernel module can be automatically loaded by non-root users. To
# enhance system security, the module is blacklisted by default to ensure
# system administrators make the module available for use as needed.
# See https://access.redhat.com/articles/3760101 for more details.
#
# Remove the blacklist by adding a comment # at the start of the line.
blacklist $1
__EOF__
}
check_blacklist()
{
if modinfo "$buildroot/$1" | grep -q '^alias:\s\+net-'; then
mod="${1##*/}"
mod="${mod%.ko*}"
echo "$mod has an alias that allows auto-loading. Blacklisting."
blacklist "$mod"
fi
}
foreachp()
{
P=$(nproc)
bgcount=0
while read mod; do
$1 "$mod" &
bgcount=$((bgcount + 1))
if [ $bgcount -eq $P ]; then
wait -n
bgcount=$((bgcount - 1))
fi
done
wait
}
[ -d "$buildroot/etc/modprobe.d/" ] || mkdir -p "$buildroot/etc/modprobe.d/"
if [ -s $list ]; then
cat $list | foreachp check_blacklist
if ls $buildroot/etc/modprobe.d/* >& /dev/null ; then
echo "%defattr(-,root,root)" >> $list
echo "%config(noreplace) /etc/modprobe.d/*-blacklist.conf" >> $list
fi
else
# If modules-extra.list is empty the %files section will throw an
# error. Add a dummy entry to workaround the problem.
echo "%defattr(-,root,root)" >> $list
fi