smartos-bin/custom_boot.sh

#!/usr/bin/bash

usage()
{
    echo "Usage: $0 [ -d dirname ]" >&2
    echo "ex: $0 -d /zones/boot/boot-20220113T011608Z"
    exit 1
}

while getopts ":d:" opt;
do
    case "$opt" in
        d)
            DIR=$OPTARG
            ;;
        \?)
            echo "Error: Invalid Option: -${OPTARG}" >&2
            usage
            ;;
        :)
            echo "Error: -${OPTARG} requires an argument."
            usage
            ;;
        *)
            usage
            ;;
    esac
done

shift $((OPTIND -1 ))

if [ -z ${DIR} ]; then
    usage
fi

mkdir -p $DIR/bootfs/etc
cp /etc/system $DIR/bootfs/etc/

echo 'set ngroups_max=1024' >> $DIR/bootfs/etc/system

cat << EOF >> $DIR/loader.conf.local
etc_system_load=YES
etc_system_type=file
etc_system_name=/boot/bootfs/etc/system
etc_system_flags="name=/etc/system"
EOF