RO only performes if we are in rw mode, brightness and volume not written to file but env variables -> no need for rw, no more rw/ro in write_args_quick_load_file

FunKey/board/funkey/rootfs-overlay/usr/local/sbin/brightness_get

@@ -1,6 +1,5 @@
 #!/bin/sh
 
-BRIGHTNESS_FILE=/etc/current_brightness
 BRIGHTNESS_DEFAULT_VALUE=100
 
 # Check args
@@ -9,20 +8,11 @@ if [ ${#} -ne 0 ]; then
     exit 1
 fi
 
-# Sanity check: File does not exist
-if [ ! -f ${BRIGHTNESS_FILE} ]; then
-    rw
-    echo ${BRIGHTNESS_DEFAULT_VALUE} > ${BRIGHTNESS_FILE}
-    ro
-fi
-
 # Sanity check: Check if integer
-brightness=$(cat ${BRIGHTNESS_FILE})
+brightness=$(fw_printenv | grep brightness= | cut -d'=' -f 2-)
 if ! [ ! "${brightness}" -ne "${brightness}" ] 2> /dev/null; then
-    rw
-    echo ${BRIGHTNESS_DEFAULT_VALUE} > ${BRIGHTNESS_FILE}
-    ro
     brightness=${BRIGHTNESS_DEFAULT_VALUE}
+	fw_setenv brightness ${brightness}
 fi
 echo ${brightness}
 exit 0

FunKey/board/funkey/rootfs-overlay/usr/local/sbin/brightness_set

@@ -1,6 +1,5 @@
 #!/bin/sh
 
-BRIGHTNESS_FILE=/etc/current_brightness
 SYSTEM_BRIGHTNESS=/sys/class/backlight/backlight/brightness
 
 # Check args
@@ -23,8 +22,6 @@ echo ${value} > ${SYSTEM_BRIGHTNESS}
 
 # Set new brightness value in brightness file
 if [ ${?} -eq 0 -a $(brightness_get) -ne ${brightness_percentage} ]; then
-    rw
-    echo ${brightness_percentage} > ${BRIGHTNESS_FILE}
-    ro
+    fw_setenv brightness ${brightness_percentage}
 fi
 exit 0

FunKey/board/funkey/rootfs-overlay/usr/local/sbin/ro

@@ -1,3 +1,9 @@
 #!/bin/sh
 
+# Check that we are in RW
+mount | grep -q "ext4 (rw" || exit 1
+
+# Flush and mount in read only
 mount / -o remount,ro
+
+exit 0

FunKey/board/funkey/rootfs-overlay/usr/local/sbin/volume_get

@@ -1,6 +1,5 @@
 #!/bin/sh
 
-VOLUME_FILE=/etc/current_volume
 VOLUME_DEFAULT_VALUE=50
 
 # Check args
@@ -9,20 +8,11 @@ if [ ${#} -ne 0 ]; then
     exit 1
 fi
 
-# Sanity check: File does not exist
-if [ ! -f ${VOLUME_FILE} ]; then
-    rw
-    echo ${VOLUME_DEFAULT_VALUE} > ${VOLUME_FILE}
-    ro
-fi
-
 # Sanity check: Check if integer
-volume=$(cat "${VOLUME_FILE}")
+volume=$(fw_printenv | grep volume= | cut -d'=' -f 2-)
 if ! [ ! "${volume}" -ne "${volume}" ] 2> /dev/null; then
-    rw
-    echo ${VOLUME_DEFAULT_VALUE} > ${VOLUME_FILE}
-    ro
     volume=${VOLUME_DEFAULT_VALUE}
+	fw_setenv volume ${volume}
 fi
 echo ${volume}
 exit 0

FunKey/board/funkey/rootfs-overlay/usr/local/sbin/volume_set

@@ -1,7 +1,5 @@
 #!/bin/sh
 
-VOLUME_FILE=/etc/current_volume
-
 # Check args
 if [ ${#} -ne 1 ]; then
     echo "Usage: $(basename ${0}) new_volume_percentage"
@@ -18,7 +16,7 @@ fi
 volume_percent=${1}
 vol_mini=16;
 volume_scaled=$(echo "a = $volume_percent * (63 - $vol_mini) / 100 + $vol_mini + 0.5; scale = 0; a / 1" | bc -l)
-echo $volume_scaled
+#echo $volume_scaled
 
 # Get current value
 current_volume=$(volume_get)
@@ -35,8 +33,6 @@ amixer -q sset 'Headphone' ${volume_scaled} unmute
 
 # Change new volume value in volume file
 if [ ${?} -eq 0 -a ${current_volume} -ne ${volume_percent} ]; then
-    rw
-    echo ${volume_percent} > ${VOLUME_FILE}
-    ro
+    fw_setenv volume ${volume_percent}
 fi
 exit 0

FunKey/board/funkey/rootfs-overlay/usr/local/sbin/write_args_quick_load_file

@@ -3,7 +3,6 @@
 # Write quick load file args
 QUICK_LOAD_FILE=/mnt/quick_load_cmd
 
-rw
 echo -n "" > $QUICK_LOAD_FILE
 for i in "$@"; do
     if $(echo "$i" | egrep -q '[[:space:]]'); then
@@ -15,5 +14,5 @@ for i in "$@"; do
     fi
 done
 echo "" >> ${QUICK_LOAD_FILE}
-ro
+
 exit 0