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backuptool_ab: Make copy_file preserve file/directory attrs

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Change-Id: I52c7b124ff8364464643c51b3f17dba4e4e49435
This commit is contained in:
Luca Stefani
2019-08-19 21:45:15 +02:00
parent 276e7770bf
commit c4e288c467
1 changed files with 9 additions and 21 deletions
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30
prebuilt/common/bin/backuptool_ab.functions
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@@ -9,40 +9,28 @@ export V=16.0
export backuptool_ab=true
copy_file() {
# toybox's cp doesn't do directories correctly for whatever reason
mkdir -p `dirname $2`
old=`umask`
umask 0322
mkdir -m755 -p `dirname $2`
umask "$old"
cp -dp "$1" "$2"
# symlinks don't have a context
if [ ! -L "$1" ]; then
# it is assumed that every label starts with 'u:object_r' and has no white-spaces
local context=`ls -Z "$1" | grep -o 'u:object_r:[^ ]*' | head -1`
chcon "$context" "$2"
fi
cp -dp --preserve=a "$1" "$2"
}
backup_file() {
if [ -e "$1" -o -L "$1" ]; then
local FILE=`basename "$1"`
local DIR=`dirname "$1"`
# dont backup any apps that have odex files, they are useless
if ( echo "$FILE" | grep -q "\.apk$" ) && [ -e `echo "$1" | sed -e 's/\.apk$/\.odex/'` ]; then
if ( echo "$1" | grep -q "\.apk$" ) && [ -e `echo "$1" | sed -e 's/\.apk$/\.odex/'` ]; then
echo "Skipping odexed apk $1";
else
mkdir -p "$C/$DIR"
copy_file "$1" "$C/$DIR/$FILE"
copy_file "$1" "$C/$1"
fi
fi
}
restore_file() {
local FILE=`basename "$1"`
local DIR=`dirname "$1"`
if [ -e "$C/$DIR/$FILE" -o -L "$C/$DIR/$FILE" ]; then
if [ ! -d "/postinstall/$DIR" ]; then
mkdir -p "/postinstall/$DIR";
fi
copy_file "$C/$DIR/$FILE" "/postinstall/$1";
if [ -e "$C/$1" -o -L "$C/$1" ]; then
copy_file "$C/$1" "/postinstall/$1";
if [ -n "$2" ]; then
echo "Deleting obsolete file $2"
rm "$2";