initramfs-framework: overlayroot: fix kernel commandline clash

The initramfs-framwork takes kernel commandline options and converts
them for internal use to variables following the 'bootparam_name'
pattern. The overlayroot module uses 'bootparam_rootfstype' and
'bootparam_rootfsflags' which both collide with linux kernel
parameters 'rootfstype' and 'rootfsflags'.  This collision is solved
by putting the variables in the namespace of the initramfs-framework
module.

Signed-off-by: Johannes Schneider <johannes.schneider@leica-geosystems.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/meta/recipes-core/initrdscripts/initramfs-framework/overlayroot b/meta/recipes-core/initrdscripts/initramfs-framework/overlayroot
index d40342dc59..10084228a8 100644
--- a/meta/recipes-core/initrdscripts/initramfs-framework/overlayroot
+++ b/meta/recipes-core/initrdscripts/initramfs-framework/overlayroot
@@ -18,6 +18,8 @@
 # root filesystem, and requires 'rootrw=<foo>' to be passed as a
 # kernel parameter, specifying the device/partition intended to
 # use as RW.
+# Mount options of the RW device can be tweaked with 'overlayrootfstype='
+# (defaults to 'ext4') and 'overlayrootfsflags=' ('defaults').
 #
 # This module needs to be executed after the initramfs-module-rootfs
 # since it relies on it to mount the filesystem at initramfs startup
@@ -80,7 +82,7 @@ fi
 mkdir -p ${RWMOUNT}
 
 # Mount RW device
-if mount -n -t ${bootparam_rootfstype:-ext4} -o ${bootparam_rootflags:-defaults} ${bootparam_rootrw} ${RWMOUNT}
+if mount -n -t ${bootparam_overlayrootfstype:-ext4} -o ${bootparam_overlayrootfsflags:-defaults} ${bootparam_rootrw} ${RWMOUNT}
 then
     # Set up overlay directories
     mkdir -p ${UPPER_DIR}