reverie/reverie-examples/strace_minimal.rs

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/*
* Copyright (c) Facebook, Inc. and its 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 reverie::{
syscalls::{Displayable, Syscall},
Error, Guest, Tool,
};
use reverie_util::CommonToolArguments;
use serde::{Deserialize, Serialize};
use structopt::StructOpt;
#[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()
}