-
Notifications
You must be signed in to change notification settings - Fork 8
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
CRYPTO_AUDITING_*_DATA defines a single USDT probe point for each invocation. This causes multiple context switches to happen if they are writen in series. This adds a new macro, CRYPTO_AUDITING_DATA and CRYPTO_AUDITING_DATAV, which take an array of events to limit the number of context switches. Signed-off-by: Daiki Ueno <[email protected]>
- Loading branch information
Showing
4 changed files
with
363 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,152 @@ | ||
| // SPDX-License-Identifier: GPL-3.0-or-later | ||
| // Copyright (C) 2023 The crypto-auditing developers. | ||
|
|
||
| extern crate agenttest; | ||
| use agenttest::*; | ||
|
|
||
| use crypto_auditing::types::EventGroup; | ||
| use libc::{c_long, c_uchar, c_void}; | ||
| use probe::probe; | ||
| use serde_cbor::de::Deserializer; | ||
| use std::env; | ||
| use std::path::PathBuf; | ||
| use std::process::{Child, Command}; | ||
| use std::thread; | ||
| use std::time::Duration; | ||
| use tempfile::tempdir; | ||
|
|
||
| fn target_dir() -> PathBuf { | ||
| env::current_exe() | ||
| .ok() | ||
| .map(|mut path| { | ||
| path.pop(); | ||
| if path.ends_with("deps") { | ||
| path.pop(); | ||
| } | ||
| path | ||
| }) | ||
| .unwrap() | ||
| } | ||
|
|
||
| fn fixture_dir() -> PathBuf { | ||
| PathBuf::from(env!("CARGO_MANIFEST_DIR")) | ||
| .parent() | ||
| .unwrap() | ||
| .join("fixtures") | ||
| } | ||
|
|
||
| struct AgentProcess(Child); | ||
|
|
||
| impl Drop for AgentProcess { | ||
| fn drop(&mut self) { | ||
| self.0.kill().expect("unable to kill event-broker"); | ||
| } | ||
| } | ||
|
|
||
| #[repr(C)] | ||
| struct EventData { | ||
| key_ptr: *const c_uchar, | ||
| value_ptr: *const c_void, | ||
| value_size: c_long, | ||
| } | ||
|
|
||
| #[test] | ||
| fn test_probe_composite() { | ||
| bump_memlock_rlimit().expect("unable to bump memlock rlimit"); | ||
|
|
||
| let agent_path = target_dir().join("crypto-auditing-agent"); | ||
| let log_dir = tempdir().expect("unable to create temporary directory"); | ||
| let log_path = log_dir.path().join("agent.log"); | ||
| let process = Command::new(&agent_path) | ||
| .arg("-c") | ||
| .arg(fixture_dir().join("conf").join("agent.conf")) | ||
| .arg("--log-file") | ||
| .arg(&log_path) | ||
| .arg("--library") | ||
| .arg(&env::current_exe().unwrap()) | ||
| .spawn() | ||
| .expect("unable to spawn agent"); | ||
|
|
||
| // Make sure the agent process will be killed at exit | ||
| let process = AgentProcess(process); | ||
|
|
||
| // Wait until the agent starts up | ||
| for _ in 0..5 { | ||
| if log_path.exists() { | ||
| break; | ||
| } | ||
| thread::sleep(Duration::from_millis(100)); | ||
| } | ||
| assert!(log_path.exists()); | ||
|
|
||
| let foo = String::from("foo\0"); | ||
| let bar = String::from("bar\0"); | ||
| let baz = String::from("baz\0"); | ||
| let events = vec![ | ||
| EventData { | ||
| key_ptr: foo.as_ptr(), | ||
| value_ptr: 3 as *const c_void, | ||
| value_size: -2, | ||
| }, | ||
| EventData { | ||
| key_ptr: bar.as_ptr(), | ||
| value_ptr: bar.as_ptr() as *const c_void, | ||
| value_size: -1, | ||
| }, | ||
| EventData { | ||
| key_ptr: baz.as_ptr(), | ||
| value_ptr: baz.as_ptr() as *const c_void, | ||
| value_size: baz.len() as i64, | ||
| }, | ||
| ]; | ||
|
|
||
| let (_link, object) = | ||
| attach_bpf(&process.0, &agent_path).expect("unable to attach agent.bpf.o"); | ||
| let map = object.map("ringbuf").expect("unable to get ringbuf map"); | ||
|
|
||
| let timeout = Duration::from_secs(10); | ||
|
|
||
| let result = with_ringbuffer( | ||
| map, | ||
| || { | ||
| probe!(crypto_auditing, new_context, 1, 2); | ||
| }, | ||
| timeout, | ||
| ) | ||
| .expect("unable to exercise probe points"); | ||
| assert_eq!(result, 1); | ||
|
|
||
| let result = with_ringbuffer( | ||
| map, | ||
| || { | ||
| probe!(crypto_auditing, data, 1, events.as_ptr(), events.len()); | ||
| }, | ||
| timeout, | ||
| ) | ||
| .expect("unable to exercise probe points"); | ||
| assert_eq!(result, 1); | ||
|
|
||
| let result = with_ringbuffer( | ||
| map, | ||
| || { | ||
| probe!(crypto_auditing, new_context, 4, 5); | ||
| }, | ||
| timeout, | ||
| ) | ||
| .expect("unable to exercise probe points"); | ||
| assert_eq!(result, 1); | ||
|
|
||
| let log_file = std::fs::File::open(&log_path) | ||
| .expect(&format!("unable to read file `{}`", log_path.display())); | ||
|
|
||
| let groups: Result<Vec<_>, _> = Deserializer::from_reader(&log_file) | ||
| .into_iter::<EventGroup>() | ||
| .collect(); | ||
| let groups = groups.expect("error deserializing"); | ||
| assert_eq!(groups.len(), 5); | ||
| assert_eq!(groups[0].events().len(), 1); | ||
| assert_eq!(groups[1].events().len(), 1); | ||
| assert_eq!(groups[2].events().len(), 1); | ||
| assert_eq!(groups[3].events().len(), 1); | ||
| assert_eq!(groups[4].events().len(), 1); | ||
| } |
Oops, something went wrong.