backuptool: Fix backup/restore functionality
Backup/restore functionality was broken in the
Ia1f4ae95c9e4dae4df844853e81c264bc838f177 change
because of incorrect check of the function's result.
check_prereq() function refactored to return 0 if
backuping/restoration is possible. Any work should be
performed only if check_prereq() succeeds.
Change-Id: Ic977dba675df58a228ef4b882b25beb66cc9d2c6
diff --git a/prebuilt/common/bin/backuptool.sh b/prebuilt/common/bin/backuptool.sh
index 2f14522..3178842 100755
--- a/prebuilt/common/bin/backuptool.sh
+++ b/prebuilt/common/bin/backuptool.sh
@@ -26,16 +26,16 @@
# Restore only if backup has the expected major and minor version
check_prereq() {
- if [ ! -f /tmp/build.prop ]; then
- # this will block any backups made before 8 cause file was not copied before
- echo "Not restoring files from incompatible version: $V"
- return 0
- fi
- if ( ! grep -q "^ro.build.version.release=$V.*" /tmp/build.prop ); then
- echo "Not restoring files from incompatible version: $V"
- return 0
- fi
+ # If there is no build.prop file the partition is probably empty.
+if [ ! -r $S/build.prop ]; then
+ echo "Backup/restore is not possible. Partition is probably empty"
return 1
+fi
+ if ( ! grep -q "^ro.build.version.release=$V.*" /tmp/build.prop ); then
+ echo "Backup/restore is not possible. Incompatible ROM version: $V"
+ return 2
+ fi
+ return 0
}
# Execute /system/addon.d/*.sh scripts with $1 parameter
@@ -81,30 +81,26 @@
cp $S/bin/backuptool.functions /tmp
cp $S/build.prop /tmp
mount_system
- mkdir -p $C
- if ! check_prereq; then
- unmount_system
- exit 127
- end
- preserve_addon_d
- run_stage pre-backup
- run_stage backup
- run_stage post-backup
+ if check_prereq; then
+ mkdir -p $C
+ preserve_addon_d
+ run_stage pre-backup
+ run_stage backup
+ run_stage post-backup
+ fi
unmount_system
;;
restore)
cp $S/bin/backuptool.functions /tmp
mount_system
- if ! check_prereq; then
- unmount_system
- exit 127
- end
- run_stage pre-restore
- run_stage restore
- run_stage post-restore
- restore_addon_d
- rm -rf $C
- sync
+ if check_prereq; then
+ run_stage pre-restore
+ run_stage restore
+ run_stage post-restore
+ restore_addon_d
+ rm -rf $C
+ sync
+ fi
unmount_system
;;
*)