35 lines
915 B
Bash
35 lines
915 B
Bash
# EX_ARM, EX_X86, BB_ARM, and BB_X86 should be generated in build.py
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extract_bb() {
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EXBIN=$BBDIR/b64xz; BBBIN=$BBDIR/busybox
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touch $EXBIN; touch $BBBIN; chmod 755 $EXBIN $BBBIN
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echo -ne $EX_ARM > $EXBIN
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if $EXBIN --test 2>/dev/null; then
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echo $BB_ARM | $EXBIN > $BBBIN
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else
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echo -ne $EX_X86 > $EXBIN
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echo $BB_X86 | $EXBIN > $BBBIN
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fi
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rm $EXBIN
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}
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setup_bb() {
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BBDIR=$TMPDIR/bin; 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")
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[ -z "$2" ] && BBDIR=. || BBDIR="$2"
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extract_bb
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;;
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"indep")
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TMPDIR=.; setup_bb; shift
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exec /system/bin/sh "$@"
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;;
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*)
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export TMPDIR=/dev/tmp; rm -rf $TMPDIR 2>/dev/null; setup_bb
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export INSTALLER=$TMPDIR/install; mkdir -p $INSTALLER; 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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