#! /bin/sh /usr/share/dpatch/dpatch-run
## 11_dhcphostname.dpatch by Andreas Thienemann <andreas@bawue.net>
## and Michael Prokop <mika@grml.org>
##
## All lines beginning with `## DP:' are a description of the patch.
## DP: Support disabling setting hostname via DNS info

@DPATCH@

Support 'nodhcphostname' option which will disable setting the
hostname of the booted system according to the DNS information.
This patch takes care of the netboot case.

diff --git a/scripts/live-bottom/23networking b/scripts/live-bottom/23networking
index 9554b77..9270e9c 100755
--- a/scripts/live-bottom/23networking
+++ b/scripts/live-bottom/23networking
@@ -135,6 +135,19 @@ ${rc_server1}
 EOF
 
 			cat /root/etc/resolv.conf >> /root/var/log/netboot.config
+
+			if [ -z "$NODHCPHOSTNAME" ]
+			then
+				dhcp_address=$(cat netboot.config | awk '/address:/{print $2}')
+				dhcp_hostname=$(busybox nslookup ${dhcp_address} ${rc_server0#nameserver }| awk \
+					'/Address 1: '${dhcp_address}'/{ print $4 }')
+
+				if [ -n "$dhcp_hostname" ]
+				then
+					echo $dhcp_hostname > /root/etc/hostname
+				fi
+				unset dhcp_address dhcp_hostname dhcp_hostname
+			fi
 		fi
 	fi
 fi
--- a/scripts/live
+++ b/scripts/live
@@ -216,6 +216,11 @@ Arguments ()
 				export NOACCESSIBILITY
 				;;
 
+			nodhcphostname)
+				NODHCPHOSTNAME="Yes"
+				export NODHCPHOSTNAME
+				;;
+
 			nofastboot)
 				NOFASTBOOT="Yes"
 				export NOFASTBOOT