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#!/bin/sh
# Updates an installer initrd with a new loader binary
# Usage: upd-initrd <initrd> <binary> <outfile>
#
# CAVEATS: Must use absolute paths to files, not relative
#
# Jeremy Katz <katzj@redhat.com>
# Copyright 2005 Red Hat, Inc.
if [ $# -ne 3 ]; then
echo "Usage: $0 <initrd> <binary> <outfile>"
exit 1
fi
INITRD=$1
BIN=$2
OUT=$3
tmpdir=$(mktemp -d)
pushd $tmpdir
zcat $INITRD |cpio -id
strip -s -o sbin/loader $BIN
(find . |cpio -c -o |gzip -9) > $OUT
popd
rm -rf $tmpdir
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