From 657fc2cdcdfdc9d1e5db99d710ebe5af528ce62f Mon Sep 17 00:00:00 2001
From: John Klug <john.klug@multitech.com>
Date: Tue, 5 Oct 2021 13:52:03 -0500
Subject: Add multiple rootfs/config/oem support

---
 .../multitech/overlayfs-init-ubi/overlayfs.init         | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'recipes-core/multitech/overlayfs-init-ubi')

diff --git a/recipes-core/multitech/overlayfs-init-ubi/overlayfs.init b/recipes-core/multitech/overlayfs-init-ubi/overlayfs.init
index 0000f29..7fc7f7e 100644
--- a/recipes-core/multitech/overlayfs-init-ubi/overlayfs.init
+++ b/recipes-core/multitech/overlayfs-init-ubi/overlayfs.init
@@ -128,8 +128,25 @@ do_rw_mount() {
     done
 }
 
+
+TMP=/var/volatile
+# Set the suffix number in /var/oem and /var/config to match root
+fix_volume_names() {
+    if ! [[ $(cat /proc/cmdline) =~ root=ubi0:rootfs([0-9]+) ]] ; then
+        loginfo "Cannot find root=ubi0:rootfs in /proc/cmdline"
+    fi
+    vol_suffix=${BASH_REMATCH[1]}
+    echo $vol_suffix
+    sed -r "s/(ubi0:(oem|config))([0-9]*)/\1${vol_suffix}/" /etc/fstab >${TMP}/fstab
+    if ! cmp ${TMP}/fstab /etc/fstab ; then
+	    loginfo "Updating fstab with new volume names"
+            cp ${TMP}/fstab /etc/fstab
+    fi
+}
+
 do_start() {
     do_rw_mount
+    fix_volume_names
 }
 
 case $1 in
-- 
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