From f4c25ab96c572e0a503bb211a11cd2641ac321a3 Mon Sep 17 00:00:00 2001
From: Scott Moser <smoser@ubuntu.com>
Date: Thu, 3 Mar 2016 16:53:49 -0500
Subject: consume KERNEL_CMDLINE even if set to "". explain 'container'

---
 systemd/cloud-init-generator | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'systemd')

diff --git a/systemd/cloud-init-generator b/systemd/cloud-init-generator
index d976ae0b..b09924ac 100755
--- a/systemd/cloud-init-generator
+++ b/systemd/cloud-init-generator
@@ -8,6 +8,8 @@ ENABLE="enabled"
 DISABLE="disabled"
 CLOUD_SYSTEM_TARGET="/lib/systemd/system/cloud-init.target"
 CLOUD_TARGET_NAME="cloud-init.target"
+# lxc sets 'container', but lets make that explicitly a global
+CONTAINER="${container}"
 
 debug() {
     local lvl="$1"
@@ -30,7 +32,7 @@ etc_file() {
 }
 
 read_proc_cmdline() {
-    if [ "$container" = "lxc" ]; then
+    if [ "$CONTAINER" = "lxc" ]; then
         _RET=""
         return 0
     fi
@@ -45,7 +47,8 @@ read_proc_cmdline() {
 
 kernel_cmdline() {
     local cmdline="" tok=""
-    if [ -n "${KERNEL_CMDLINE+$KERNEL_CMDLINE}" ]; then
+    if [ -n "${KERNEL_CMDLINE+x}" ]; then
+        # use KERNEL_CMDLINE if present in environment even if empty
         cmdline=${KERNEL_CMDLINE}
         debug 1 "kernel command line from env KERNEL_CMDLINE: $cmdline"
     elif read_proc_cmdline; then
-- 
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