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#!/bin/bash
buildroot="$1"
kernel_base="$2"
blacklist()
{
cat > "$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 "$1" | grep -q '^alias:\s\+net-'; then
mod="${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/"
find "$buildroot/$kernel_base/extra" -name "*.ko*" | \
foreachp check_blacklist
# Many BIOS-es export a PNP-id which causes the floppy driver to autoload
# even though most modern systems don't have a 3.5" floppy driver anymore
# this replaces the old die_floppy_die.patch which removed the PNP-id from
# the module
if [ -f $buildroot/$kernel_base/extra/drivers/block/floppy.ko* ]; then
blacklist "floppy"
fi
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