#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0+
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#
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# Transform a qemu-cmd file to allow reuse.
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#
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# Usage: kvm-transform.sh bzImage console.log < qemu-cmd-in > qemu-cmd-out
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#
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# bzImage: Kernel and initrd from the same prior kvm.sh run.
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# console.log: File into which to place console output.
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#
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# The original qemu-cmd file is provided on standard input.
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# The transformed qemu-cmd file is on standard output.
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# The transformation assumes that the qemu command is confined to a
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# single line. It also assumes no whitespace in filenames.
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#
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# Copyright (C) 2020 Facebook, Inc.
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#
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# Authors: Paul E. McKenney <paulmck@kernel.org>
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image="$1"
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if test -z "$image"
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then
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echo Need kernel image file.
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exit 1
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fi
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consolelog="$2"
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if test -z "$consolelog"
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then
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echo "Need console log file name."
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exit 1
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fi
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awk -v image="$image" -v consolelog="$consolelog" '
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{
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line = "";
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for (i = 1; i <= NF; i++) {
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if (line == "")
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line = $i;
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else
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line = line " " $i;
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if ($i == "-serial") {
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i++;
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line = line " file:" consolelog;
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}
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if ($i == "-kernel") {
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i++;
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line = line " " image;
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}
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}
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print line;
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}'
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