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