52996421a1
Add a function that allows to copy files preserving their SELinux context that is generic enough to work with both busybox and toybox. Change-Id: If2c245863df5675c18dbf43b6bcedeb33383fc38
48 lines
1.1 KiB
Bash
48 lines
1.1 KiB
Bash
#!/sbin/sh
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#
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# Functions for backuptool.sh
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#
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export C=/tmp/backupdir
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export S=/system
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export V=13.0
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copy_file() {
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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 F=`basename "$1"`
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local D=`dirname "$1"`
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# dont backup any apps that have odex files, they are useless
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if ( echo "$F" | 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/$D"
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copy_file "$1" "$C/$D/$F"
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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/$FILE" ]; then
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if [ ! -d "$DIR" ]; then
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mkdir -p "$DIR";
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fi
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copy_file "$C/$DIR/$FILE" "$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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