reverie/reverie-examples/strace_minimal.rs
Vladimir Makaev be457c2dc3 Migrate from structopt to clap3
Summary:
See rationale in the linked task
I was planning to build a new CLI and decided to follow CLI Foundation recommentation. Since hermit is effectively not released it's a good time to migrate now which hasn't been hard mostly followed the fastmods on the task and and some manual fixes of the remaining code

Reviewed By: jasonwhite

Differential Revision: D39953166

fbshipit-source-id: 6e917c6a8ea2ee8258e7e6068e9c9e787ebf0989
2022-10-03 12:18:55 -07:00

48 lines
1.3 KiB
Rust

/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree.
*/
use clap::Parser;
use reverie::syscalls::Displayable;
use reverie::syscalls::Syscall;
use reverie::Error;
use reverie::Guest;
use reverie::Tool;
use reverie_util::CommonToolArguments;
use serde::Deserialize;
use serde::Serialize;
#[derive(Serialize, Deserialize, Default)]
struct StraceTool {}
#[reverie::tool]
impl Tool for StraceTool {
async fn handle_syscall_event<T: Guest<Self>>(
&self,
guest: &mut T,
syscall: Syscall,
) -> Result<i64, Error> {
eprintln!(
"[pid {}] {} = ?",
guest.tid(),
syscall.display_with_outputs(&guest.memory()),
);
guest.tail_inject(syscall).await
}
}
#[tokio::main]
async fn main() -> Result<(), Error> {
let args = CommonToolArguments::from_args();
let log_guard = args.init_tracing();
let tracer = reverie_ptrace::TracerBuilder::<StraceTool>::new(args.into())
.spawn()
.await?;
let (status, _) = tracer.wait().await?;
drop(log_guard); // Flush logs before exiting.
status.raise_or_exit()
}