added backuptool, official 2.7.0 tag
diff --git a/prebuilt/common/bin/50-slim.sh b/prebuilt/common/bin/50-slim.sh
new file mode 100755
index 0000000..251981c
--- /dev/null
+++ b/prebuilt/common/bin/50-slim.sh
@@ -0,0 +1,41 @@
+#!/sbin/sh
+#
+# /system/addon.d/50-slim.sh
+# During a Slim upgrade, this script backs up /system/etc/hosts,
+# /system is formatted and reinstalled, then the file is restored.
+#
+
+. /tmp/backuptool.functions
+
+list_files() {
+cat <<EOF
+etc/hosts
+EOF
+}
+
+case "$1" in
+ backup)
+ list_files | while read FILE DUMMY; do
+ backup_file $S/"$FILE"
+ done
+ ;;
+ restore)
+ list_files | while read FILE REPLACEMENT; do
+ R=""
+ [ -n "$REPLACEMENT" ] && R="$S/$REPLACEMENT"
+ [ -f "$C/$S/$FILE" ] && restore_file $S/"$FILE" "$R"
+ done
+ ;;
+ pre-backup)
+ # Stub
+ ;;
+ post-backup)
+ # Stub
+ ;;
+ pre-restore)
+ # Stub
+ ;;
+ post-restore)
+ # Stub
+ ;;
+esac
diff --git a/prebuilt/common/bin/backuptool.functions b/prebuilt/common/bin/backuptool.functions
new file mode 100644
index 0000000..833460f
--- /dev/null
+++ b/prebuilt/common/bin/backuptool.functions
@@ -0,0 +1,37 @@
+#!/sbin/sh
+#
+# Functions for backuptool.sh
+#
+
+export C=/tmp/backupdir
+export S=/system
+export V=9
+
+backup_file() {
+ if [ -e "$1" ]; then
+ local F=`basename "$1"`
+ local D=`dirname "$1"`
+ # dont backup any apps that have odex files, they are useless
+ if ( echo "$F" | grep -q "\.apk$" ) && [ -e `echo "$1" | sed -e 's/\.apk$/\.odex/'` ]; then
+ echo "Skipping odexed apk $1";
+ else
+ mkdir -p "$C/$D"
+ cp -p $1 "$C/$D/$F"
+ fi
+ fi
+}
+
+restore_file() {
+ local FILE=`basename "$1"`
+ local DIR=`dirname "$1"`
+ if [ -e "$C/$DIR/$FILE" ]; then
+ if [ ! -d "$DIR" ]; then
+ mkdir -p "$DIR";
+ fi
+ cp -p "$C/$DIR/$FILE" "$1";
+ if [ -n "$2" ]; then
+ echo "Deleting obsolete file $2"
+ rm "$2";
+ fi
+ fi
+}
diff --git a/prebuilt/common/bin/backuptool.sh b/prebuilt/common/bin/backuptool.sh
new file mode 100755
index 0000000..25c1d0d
--- /dev/null
+++ b/prebuilt/common/bin/backuptool.sh
@@ -0,0 +1,53 @@
+#!/sbin/sh
+#
+# Backup and restore addon /system files
+#
+
+export C=/tmp/backupdir
+export S=/system
+export V=10
+
+# Preserve /system/addon.d in /tmp/addon.d
+preserve_addon_d() {
+ mkdir -p /tmp/addon.d/
+ cp -a /system/addon.d/* /tmp/addon.d/
+ chmod 755 /tmp/addon.d/*.sh
+}
+
+# Restore /system/addon.d in /tmp/addon.d
+restore_addon_d() {
+ cp -a /tmp/addon.d/* /system/addon.d/
+ rm -rf /tmp/addon.d/
+}
+
+# Execute /system/addon.d/*.sh scripts with $1 parameter
+run_stage() {
+for script in $(find /tmp/addon.d/ -name '*.sh' |sort -n); do
+ $script $1
+done
+}
+
+case "$1" in
+ backup)
+ mkdir -p $C
+ check_prereq
+ preserve_addon_d
+ run_stage pre-backup
+ run_stage backup
+ run_stage post-backup
+ ;;
+ restore)
+ check_prereq
+ run_stage pre-restore
+ run_stage restore
+ run_stage post-restore
+ restore_addon_d
+ rm -rf $C
+ sync
+ ;;
+ *)
+ echo "Usage: $0 {backup|restore}"
+ exit 1
+esac
+
+exit 0