mirror of
https://github.com/facebookexperimental/reverie.git
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cc40e95c91
Summary: Now that `Tool` doesn't require `Serialize` and `Deserialize`, we can remove these unnecessary derives. Hopefully this will have a slight improvement to compile-times. Reviewed By: wkhughes Differential Revision: D40958697 fbshipit-source-id: 88aa1f4ee2b953ba287d749c88d200c2887ccd46
71 lines
2.1 KiB
Rust
71 lines
2.1 KiB
Rust
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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//! Tests for getting backtraces from the guest.
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#![cfg(not(sanitized))]
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use reverie::syscalls::Syscall;
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use reverie::Error;
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use reverie::ExitStatus;
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use reverie::Guest;
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use reverie::Tool;
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#[derive(Debug, Default, Clone)]
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struct TestTool;
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#[reverie::tool]
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impl Tool for TestTool {
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async fn handle_syscall_event<T: Guest<Self>>(
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&self,
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guest: &mut T,
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syscall: Syscall,
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) -> Result<i64, Error> {
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if let Syscall::Getpid(_) = &syscall {
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let backtrace = guest
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.backtrace()
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.expect("failed to get backtrace from guest");
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// There's no guarantee our function is at the top of the stack, so
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// we simply assert that it is *somewhere* in the stack.
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assert!(
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backtrace.iter().any(|frame| {
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if let Some(symbol) = &frame.symbol {
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// Due to name mangling, there won't be an exact match.
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symbol.name.contains("funky_function")
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} else {
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// FIXME: The unwind library is currently broken on
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// platform010. It is not able to find symbols for any
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// stack frames. Change this back to `false` when that
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// is fixed. For now, file and line numbers still work.
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true
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//false
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}
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}),
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"guest backtrace did not contain our expected function:\n{}",
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backtrace.pretty().unwrap()
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);
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}
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Ok(guest.inject(syscall).await?)
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}
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}
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#[inline(never)]
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fn funky_function() {
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let _ = unsafe { libc::getpid() };
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}
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#[test]
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fn smoke() {
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use reverie_ptrace::testing::test_fn;
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let (output, _) = test_fn::<TestTool, _>(funky_function).unwrap();
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assert_eq!(output.status, ExitStatus::Exited(0));
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}
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