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