qubes-installer-qubes-os/anaconda/dracut/fetch-kickstart-net.sh

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#!/bin/bash
# fetch-kickstart-net - fetch kickstart file from the network.
# runs from the "initqueue/online" hook whenever a net interface comes online
# initqueue/online hook passes interface name as $1
netif="$1"
# we already processed the kickstart - exit
[ -e /tmp/ks.cfg.done ] && return 0
# no kickstart requested - exit
[ -n "$kickstart" ] || return 0
# user requested a specific device, but this isn't it - exit
[ -n "$ksdevice" ] && [ "$ksdevice" != "$netif" ] && return 0
command -v getarg >/dev/null || . /lib/dracut-lib.sh
. /lib/url-lib.sh
. /lib/anaconda-lib.sh
if [ "$kickstart" = "nfs:auto" ]; then
# construct kickstart URL from dhcp info
# server is next_server, or the dhcp server itself if missing
. /tmp/net.$netif.dhcpopts
server="${new_next_server:-$new_dhcp_server_identifier}"
# filename is dhcp 'filename' option, or '/kickstart/' if missing
filename="/kickstart/"
# read the dhcp lease file and see if we can find 'filename'
{ while read line; do
val="${line#filename }"
if [ "$val" != "$line" ]; then
eval "filename=$val" # drop quoting and semicolon
fi
done
} < /tmp/net.$netif.lease
kickstart="nfs:$server:$filename"
fi
# NFS kickstart URLs that end in '/' get '$IP_ADDR-kickstart' appended
case "$kickstart" in
nfs*/) kickstart="${kickstart}${new_ip_address}-kickstart" ;;
esac
info "anaconda fetching kickstart from $kickstart"
if fetch_url "$kickstart" /tmp/ks.cfg; then
parse_kickstart /tmp/ks.cfg
run_kickstart
else
warn "failed to fetch kickstart from $kickstart"
fi