From b61797fd00df4dd9f1dbbb10a85c4de9e8a97f35 Mon Sep 17 00:00:00 2001
From: Serhii Voloshynov <serhii.voloshynov@globallogic.com>
Date: Mon, 29 May 2023 13:10:06 +0300
Subject: fix after review

---
 .../multitech/overlayfs-init-ubi/overlayfs.init    | 25 +++++++++++-----------
 1 file changed, 13 insertions(+), 12 deletions(-)

(limited to 'recipes-core')

diff --git a/recipes-core/multitech/overlayfs-init-ubi/overlayfs.init b/recipes-core/multitech/overlayfs-init-ubi/overlayfs.init
index 263aa62..c5d3d37 100644
--- a/recipes-core/multitech/overlayfs-init-ubi/overlayfs.init
+++ b/recipes-core/multitech/overlayfs-init-ubi/overlayfs.init
@@ -12,7 +12,7 @@ USER_PARTITION="ubi0:user-data"
 # Erase the file system
 DO_ERASE_PERSISTENT=$(fw_printenv erase_persistent_f | cut -d '"' -f2 | grep -Eo '[0-9]+$' || true)
 # Remove files not hidden
-DO_CLEAR_PERSISTENT=$(fw_printenv default_reset_f | cut -d '"' -f2 | grep -Eo '[0-9]+$' || true)
+DO_ERASE_ALL_EXCEPT_PERSISTENT=$(fw_printenv default_reset_f | cut -d '"' -f2 | grep -Eo '[0-9]+$' || true)
 
 pid=$$
 prefix="<3>overlayrootfs-generator[${pid}]: "
@@ -43,22 +43,23 @@ my_switch_root() {
     for f in $fs ; do
         if [[ -d $NEW_ROOT/$f ]] ; then
             loginfo "my_switch_root: mount -o noatime,move --bind $f $NEW_ROOT/$f"
-            mount -o noatime,move --bind $f $NEW_ROOT/$f
+            mount -o noatime,move --bind "$f" "$NEW_ROOT"/"$f"
         else
             # loginfo "my_switch_root: Skipping $NEW_ROOT/$f"
             :
         fi
     done
-    /sbin/pivot_root $NEW_ROOT $NEW_ROOT/orig
+    /sbin/pivot_root "$NEW_ROOT" "$NEW_ROOT"/orig
 }
 
-do_remove_nonpersistent() {
+do_erase_all_except_persistent() {
+    # Delete all files and folders except for the "${MNT_USER}/.persistent" directory.
     loginfo "Clearing user data. Persistent data will be left "
-    rm -rf $MNT_USER/*
+    rm -rf "${MNT_USER:?}/"*
 }
 
 # Most efficient way to clear UBIFS file system
-do_erase_all() {
+do_erase_persistent() {
     loginfo "Erasing user data"
     # Sys must be mounted to use ubifs utilities
     mount -t sysfs sysfs /sys
@@ -70,10 +71,11 @@ do_erase_all() {
     umount -l $MNT_USER
     loginfo "Erase user-data partition $DEV"
     # Would be nice if ubiupdatevol took volume names instead of numbers
-    ubiupdatevol ${DEV} -t 2>&1 | logpipe
+    ubiupdatevol "${DEV}" -t 2>&1 | logpipe
 
     mnt_user
     fw_setenv erase_persistent_f 0
+    fw_setenv default_reset_f 0
 }
 
 do_rw_mount() {
@@ -82,10 +84,9 @@ do_rw_mount() {
 
     mnt_user # user_data is now accessible
     if [[ "$DO_ERASE_PERSISTENT" -eq 1 ]] ; then
-        do_erase_all
-        fw_setenv default_reset_f 0
-    elif [[ "$DO_CLEAR_PERSISTENT" -eq 1 ]] ; then
-        do_remove_nonpersistent
+        do_erase_persistent
+    elif [[ "$DO_ERASE_ALL_EXCEPT_PERSISTENT" -eq 1 ]] ; then
+        do_erase_all_except_persistent
         fw_setenv default_reset_f 0
     fi
 
@@ -109,7 +110,7 @@ do_rw_mount() {
     cgroupmnts=$(sed -r -e 's/[^[:space:]]*[[:space:]]//'  -e 's/[[:space:]]+.*//g' /proc/mounts | grep '^/orig')
     for mp in ${cgroupmnts} ; do
         if [[ $mp != /orig ]] && [[ $mp != /orig/mnt* ]] && [[ -d $mp ]] ; then
-            umount -l $mp >/dev/null 2>&1
+            umount -l "$mp" >/dev/null 2>&1
         fi
     done
 }
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