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#!/usr/bin/env bash
# Copyright (C) 2018 Luke Shumaker
# SPDX-License-Identifier: AGPL-3.0-or-later
declare -r NAME=osi-run
declare -r VERSION=20180814
set -euE
source ./lib/osi.sh
main() {
local arg_mode=main
local arg_image=
local arg_qemu=()
local args
if ! args="$(getopt -n "${0##*/}" -o hV -l help,version -- "$@")"; then
arg_mode=error
else
eval "set -- $args"
while true; do
case "$1" in
-V|--version) shift; arg_mode=version;;
-h|--help) shift; arg_mode=usage;;
--) shift; break;;
*) error 1 'Internal error. The programmer writing this tool screwed up.';;
esac
done
case "$arg_mode" in
main)
if (( $# < 1 )); then
error 0 "Expected at least 1 positional argument, got none"
arg_mode=error
else
arg_image=$1
arg_qemu=("${@:2}")
fi
;;
esac
fi
case "$arg_mode" in
error) print "Try '%q --help' for more information" "${0##*/}" >&2; return 2;;
version)
print "%s (notsystemd) %s" "$NAME" "$VERSION"
return 0
;;
usage)
print 'Usage: %s [OPTIONS] FILENAME.img [-- QEMU_ARGS...] [< SCRIPT.sh]' "${0##*/}"
print ' or: %s [OPTIONS] -- FILENAME.img [QEMU_ARGS...] [< SCRIPT.sh]' "${0##*/}"
print 'Operating System Image: Interactive Shell'
echo
print 'OPTIONS:'
print ' -h, --help display this help'
print ' -V, --version output version information'
return 0
;;
main)
tmp=$(mktemp -td -- "${0##*/}.XXXXXXXXXX")
trap "rm -rf -- ${tmp@Q}" EXIT
mkfifo -- "$tmp/sync"
qemu-system-x86_64 \
-machine accel=kvm \
-m 512 \
-vnc unix:"$tmp/vnc.sock" \
-name "osi-shell $arg_image" \
-drive media=disk,format=raw,if=virtio,file="$arg_image" \
-serial stdio \
-serial file:"$tmp/exit" \
"${arg_qemu[@]}" \
< <(cat <"$tmp/sync" >/dev/null; cat; while sleep 0.1; do printf '\x04'; done) \
> >(read -r -N1 c; printf '%s' "$c"; :>"$tmp/sync"; exec cat)
return "$(sed 's/\r$//' <"$tmp/exit")"
;;
esac
}
main "$@"
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