basic support for "nfs://" dhcp root_path

modules.d/95NFS/install

@@ -0,0 +1,3 @@
+#!/bin/sh
+inst mount.nfs
+inst_hook mount 96 "$moddir/nfs-mount-root.sh"

modules.d/95NFS/nfs-mount-root.sh

@@ -0,0 +1,21 @@
+#!/bin/sh
+set -x
+
+for dev in /net.*.dhcpopts; do 
+    if [ -f "$dev" ]; then 
+	. "$dev"
+	[ -n "$new_root_path" ] && nfsroot="$new_root_path"
+	if [ ! -s /.resume -a "$nfsroot" ]; then
+	    if [ "${nfsroot#nfs://}" != "$nfsroot" ]; then
+		nfsroot="${nfsroot#nfs://}"
+		nfsroot="${nfsroot/\//:/}"
+		#
+		#modprobe nfs
+		#
+		# start rpc.statd ??
+		mount -t nfs "$nfsroot" -o nolock "$NEWROOT" && ROOTFS_MOUNTED=yes
+	    fi
+	fi
+    fi
+done
+