Magisk/scripts/update_binary.sh
2019-07-16 01:16:29 -07:00

39 lines
835 B
Bash

#!/sbin/sh
X86_CNT=__X86_CNT__
extract_bb() {
touch "$BBBIN"
chmod 755 "$BBBIN"
dd if="$0" of="$BBBIN" bs=1024 skip=1 count=$X86_CNT
"$BBBIN" >/dev/null || dd if="$0" of="$BBBIN" bs=1024 skip=$(($X86_CNT + 1))
}
setup_bb() {
export BBDIR=$TMPDIR/bin
BBBIN=$BBDIR/busybox
mkdir -p $BBDIR 2>/dev/null
extract_bb
$BBBIN --install -s $BBDIR
export PATH=$BBDIR:$PATH
}
case "$1" in
"extract"|"-x")
[ -z "$2" ] && BBBIN=./busybox || BBBIN="$2"
extract_bb
;;
"indep"|"sh")
TMPDIR=.
setup_bb
shift
exec /system/bin/sh "$@"
;;
*)
export TMPDIR=/dev/tmp
rm -rf $TMPDIR 2>/dev/null
setup_bb
export INSTALLER=$TMPDIR/install
mkdir -p $INSTALLER
unzip -o "$3" -d $INSTALLER >&2
exec sh $INSTALLER/META-INF/com/google/android/updater-script "$@"
;;
esac
exit