From 9d6852a84c2cd70a499cf43761b06bc6277cfcb1 Mon Sep 17 00:00:00 2001
From: Jonathan Bauer
Date: Fri, 5 Jun 2020 17:31:15 +0200
Subject: [dnbd3-rootfs] KCL > SLX_DNBD3_IMAGE

---
 .../dnbd3-rootfs/hooks/prepare-root-partition.sh   | 23 +++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/modules.d/dnbd3-rootfs/hooks/prepare-root-partition.sh b/modules.d/dnbd3-rootfs/hooks/prepare-root-partition.sh
index 0e86cce0..a56e5c10 100755
--- a/modules.d/dnbd3-rootfs/hooks/prepare-root-partition.sh
+++ b/modules.d/dnbd3-rootfs/hooks/prepare-root-partition.sh
@@ -47,24 +47,25 @@ container_unpack_xloop() {
 # endregion
 
 # region connect dnbd3 image
-# Determine stage4 image path and revision
-if [ -z "$SLX_DNBD3_IMAGE" ]; then
-    # specified on the KCL?
-    SLX_DNBD3_IMAGE="$(getarg slx.stage4.path=)"
+# Determine path to dnbd3 image: either on the kcl or via config file
+declare -r KCL_DNBD3_IMAGE="$(getarg slx.stage4.path=)"
+if [ -n "$KCL_DNBD3_IMAGE" ]; then
+    SLX_DNBD3_IMAGE="$KCL_DNBD3_IMAGE"
+    echo "SLX_DNBD3_IMAGE='$SLX_DNBD3_IMAGE'" >> /etc/openslx
 fi
 if [ -z "$SLX_DNBD3_IMAGE" ]; then
-    # not specified, fall back to old bwlp default path convention
-    SLX_DNBD3_IMAGE="stage4/bwlp/maxilinux-$(uname -r)"
+    emergency_shell "Failed to determine which DNBD3 image to use." \
+        "It was neither specified on kernel command line nor in the" \
+        "configuration file."
 fi
-# save it for later
-echo "SLX_DNBD3_IMAGE='$SLX_DNBD3_IMAGE'" >> /etc/openslx
-if [ -z "$SLX_DNBD3_RID" ]; then
+declare -r KCL_DNBD3_RID="$(getarg slx.stage4.rid=)"
+if [ -n "$KCL_DNBD3_RID" ]; then
     # specified on the KCL?
-    SLX_DNBD3_RID="$(getarg slx.stage4.rid=)"
+    SLX_DNBD3_RID="$KCL_DNBD3_RID"
+    echo "SLX_DNBD3_RID='$SLX_DNBD3_RID'" >> /etc/openslx
 fi
 if [ -n "$SLX_DNBD3_RID" ]; then
     _dnbd3_client_additional_args=("--rid" "$SLX_DNBD3_RID")
-    echo "SLX_DNBD3_RID='$SLX_DNBD3_RID'" >> /etc/openslx
 fi
 
 IFS=", "
-- 
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