qubes-installer-qubes-os/anaconda/dracut/fetch-kickstart-disk

#!/bin/bash
# fetch-kickstart-disk - fetch kickstart from a block device

command -v getarg >/dev/null || . /lib/dracut-lib.sh
. /lib/anaconda-lib.sh

dev="$1"
path="${2:-/ks.cfg}"

[ -e /tmp/ks.cfg.done ] && exit 1
[ -b "$dev" ] || exit 1

info "anaconda: fetching kickstart from $dev:$path"
mnt="$(find_mount $dev)"

if [ -n "$mnt" ]; then
    cp $mnt$path /tmp/ks.cfg 2>&1
else
    tmpmnt="$(mkuniqdir /run/install tmpmnt)"
    if mount -o ro $dev $tmpmnt; then
        cp $tmpmnt/$path /tmp/ks.cfg 2>&1
        umount $tmpmnt
        rmdir $tmpmnt
    fi
fi


# if we're waiting for a cdrom kickstart, tell the user so they can swap discs
if str_starts "$kickstart" "cdrom"; then
    if [ ! -f /tmp/ks.cfg ]; then
        tell_user "Please insert CDROM containing '$path'..."
        exit 0
    elif [ -f /tmp/anaconda-on-cdrom ]; then
        tell_user "Kickstart loaded. Please re-insert installation media."
    fi
fi

if [ -f /tmp/ks.cfg ]; then
    parse_kickstart /tmp/ks.cfg
    run_kickstart
else
    warn "Can't get kickstart from $dev:$path"
fi