4a049b563c
* A/B OTA devices wont run backuptools in recovery (because they don't go in to recovery to do an OTA). In these cases let's use a modified version to backup/restore from within android upon postinstall. * Add backuptool_postinstall.sh which will be run prior to the normal postinstall script in order to backup/restore via addon.d scripts. * This needs to be done in such a manner because we need /postinstall mounted rw instead of the ro with context= options which are used for the normal postinstall (dexopt) script. Change-Id: I51511870634dd1ec5388adafddb446f95cc5a950
52 lines
1.2 KiB
Bash
52 lines
1.2 KiB
Bash
#!/system/bin/sh
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#
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# Functions for backuptool_ab.sh
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#
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export S=/system
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export C=/postinstall/tmp/backupdir
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export V=15.1
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export backuptool_ab=true
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copy_file() {
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# toybox's cp doesn't do directories correctly for whatever reason
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mkdir -p `dirname $2`
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cp -dp "$1" "$2"
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# symlinks don't have a context
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if [ ! -L "$1" ]; then
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# it is assumed that every label starts with 'u:object_r' and has no white-spaces
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local context=`ls -Z "$1" | grep -o 'u:object_r:[^ ]*' | head -1`
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chcon "$context" "$2"
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fi
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}
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backup_file() {
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if [ -e "$1" -o -L "$1" ]; then
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local FILE=`basename "$1"`
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local DIR=`dirname "$1"`
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# dont backup any apps that have odex files, they are useless
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if ( echo "$FILE" | grep -q "\.apk$" ) && [ -e `echo "$1" | sed -e 's/\.apk$/\.odex/'` ]; then
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echo "Skipping odexed apk $1";
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else
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mkdir -p "$C/$DIR"
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copy_file "$1" "$C/$DIR/$FILE"
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fi
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fi
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}
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restore_file() {
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local FILE=`basename "$1"`
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local DIR=`dirname "$1"`
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if [ -e "$C/$DIR/$FILE" -o -L "$C/$DIR/$FILE" ]; then
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if [ ! -d "/postinstall/$DIR" ]; then
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mkdir -p "/postinstall/$DIR";
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fi
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copy_file "$C/$DIR/$FILE" "/postinstall/$1";
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if [ -n "$2" ]; then
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echo "Deleting obsolete file $2"
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rm "$2";
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fi
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fi
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}
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