From a345cf3c3d7c15cfca5735c531f825062235c135 Mon Sep 17 00:00:00 2001
From: Hannes Reinecke <hare@suse.de>
Date: Wed, 2 Jul 2014 11:20:22 +0200
Subject: Implement shortcut 'ip=<ifname>:static' for static configuration

To simplify static configurate we should be pulling in the
existing 'ifcfg' files when running in hostonly mode.
With that we can implement the shortcut 'ip=<ifname>:static'
to use the existing configuration from the ifcfg file.

Signed-off-by: Hannes Reinecke <hare@suse.de>
---
 modules.d/40network/ifup.sh          | 14 +++++++++++++-
 modules.d/40network/module-setup.sh  |  4 ++++
 modules.d/40network/parse-ip-opts.sh |  8 +++++++-
 3 files changed, 24 insertions(+), 2 deletions(-)

Index: dracut-042/modules.d/40network/ifup.sh
===================================================================
--- dracut-042.orig/modules.d/40network/ifup.sh	2015-06-24 18:02:12.961576972 +0200
+++ dracut-042/modules.d/40network/ifup.sh	2015-06-24 18:02:13.849627528 +0200
@@ -399,6 +399,18 @@ for p in $(getargs ip=); do
     [ "$use_bridge" != 'true' ] && \
     [ "$use_vlan" != 'true' ] && continue
 
+    if [ "$autoconf" = "static" ] &&
+        [ -e /etc/sysconfig/network/ifcfg-${netif} ] ; then
+        # Pull in existing static configuration
+        . /etc/sysconfig/network/ifcfg-${netif}
+        ip=${IPADDR}
+        mask=${PREFIXLEN}
+        mtu=${MTU}
+        server=${REMOTE_IPADDR}
+        gw=${GATEWAY}
+        autoconf=${BOOTPROTO}
+    fi
+
     # setup nameserver
     namesrv="$dns1 $dns2 $(getargs nameserver)"
     for s in $namesrv; do
@@ -412,7 +424,7 @@ for p in $(getargs ip=); do
 
     for autoopt in $(str_replace "$autoconf" "," " "); do
         case $autoopt in
-            dhcp|on|any)
+            dhcp4|dhcp|on|any)
                 do_dhcp -4 ;;
             dhcp6)
                 load_ipv6
Index: dracut-042/modules.d/40network/module-setup.sh
===================================================================
--- dracut-042.orig/modules.d/40network/module-setup.sh	2015-06-24 18:02:05.949177762 +0200
+++ dracut-042/modules.d/40network/module-setup.sh	2015-06-24 18:02:13.849627528 +0200
@@ -51,6 +51,10 @@ install() {
 
     _arch=$(uname -m)
 
+    [[ $hostonly ]] && {
+        inst_multiple /etc/sysconfig/network/ifcfg-*
+    }
+
     inst_libdir_file {"tls/$_arch/",tls/,"$_arch/",}"libnss_dns.so.*" \
         {"tls/$_arch/",tls/,"$_arch/",}"libnss_mdns4_minimal.so.*"
 
Index: dracut-042/modules.d/40network/parse-ip-opts.sh
===================================================================
--- dracut-042.orig/modules.d/40network/parse-ip-opts.sh	2015-06-11 17:39:47.000000000 +0200
+++ dracut-042/modules.d/40network/parse-ip-opts.sh	2015-06-24 18:02:13.849627528 +0200
@@ -67,7 +67,13 @@ for p in $(getargs ip=); do
     for autoopt in $(str_replace "$autoconf" "," " "); do
         case $autoopt in
             error) die "Error parsing option 'ip=$p'";;
-            bootp|rarp|both) die "Sorry, ip=$autoopt is currenty unsupported";;
+            bootp|rarp|both) die "Sorry, ip=$autoopt is currently unsupported";;
+            static)
+		if [ ! -e /etc/sysconfig/network/ifcfg-${dev} ] ; then
+                    warn "No ifcfg configuration present for interface $dev, skipping"
+                    continue
+		fi
+            ;;
             none|off)
                 [ -z "$ip" ] && \
                     die "For argument 'ip=$p'\nValue '$autoopt' without static configuration does not make sense"