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// VIRTIO CONSOLE Emulation via vhost-user
//
// Copyright 2023-2024 VIRTUAL OPEN SYSTEMS SAS. All Rights Reserved.
// Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
//
// SPDX-License-Identifier: Apache-2.0 or BSD-3-Clause
mod backend;
mod console;
mod vhu_console;
mod virtio_console;
use crate::console::BackendType;
use clap::Parser;
use log::error;
use std::path::PathBuf;
use std::process::exit;
pub(crate) type Result<T> = std::result::Result<T, Error>;
use crate::backend::{start_backend, Error, VuConsoleConfig};
#[derive(Parser, Debug)]
#[clap(author, version, about, long_about = None)]
struct ConsoleArgs {
/// Location of vhost-user Unix domain socket. This is suffixed by 0,1,2..socket_count-1.
#[clap(short = 's', long, value_name = "SOCKET")]
socket_path: PathBuf,
/// Number of guests (sockets) to connect to.
#[clap(short = 'c', long, default_value_t = 1)]
socket_count: u32,
/// Console backend (Network, Nested) to be used.
#[clap(short = 'b', long, value_enum, default_value = "nested")]
backend: BackendType,
/// Initial tcp port to be used with "network" backend. If socket_count is N then
/// the following tcp ports will be created: tcp_port, tcp_port + 1, ..., tcp_port + (N - 1).
#[clap(short = 'p', long, value_name = "PORT", default_value = "12345")]
tcp_port: String,
}
impl TryFrom<ConsoleArgs> for VuConsoleConfig {
type Error = Error;
fn try_from(args: ConsoleArgs) -> Result<Self> {
if args.socket_count == 0 {
return Err(Error::SocketCountInvalid(0));
}
if (args.backend == BackendType::Nested) && (args.socket_count != 1) {
return Err(Error::WrongBackendSocket);
}
Ok(VuConsoleConfig {
socket_path: args.socket_path,
backend: args.backend,
tcp_port: args.tcp_port,
socket_count: args.socket_count,
})
}
}
fn main() {
env_logger::init();
if let Err(e) = VuConsoleConfig::try_from(ConsoleArgs::parse()).and_then(start_backend) {
error!("{e}");
exit(1);
}
}
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