ripple/minitrace: terminate Process on drop

This ensures even outright panics in minitrace still cleanly terminate
the process.

Change-Id: I5debbae2e6e1bb38ef8782bbdf9f26661876fdbe

1 files changed, 9 insertions, 5 deletions

diff --git a/ripple/minitrace/src/main.rs b/ripple/minitrace/src/main.rs
index 2d21f8b..34c503c 100644
--- a/ripple/minitrace/src/main.rs
+++ b/ripple/minitrace/src/main.rs
@@ -62,6 +62,14 @@ struct Process {
 	pidfd: PidFd,
 }
 
+impl Drop for Process {
+	fn drop(&mut self) {
+		if let Err(err) = self.terminate() {
+			eprintln!("{err}");
+		}
+	}
+}
+
 impl Process {
 	fn spawn(cmd: &mut Command) -> Result<Process> {
 		unsafe {
@@ -248,14 +256,10 @@ fn main() -> Result<()> {
 				let regs = ptrace::getregs(event_tid.as_pid())?;
 				let entry = match SyscallEntry::from_regs(&process, regs) {
 					Ok(entry) => entry,
-					Err(err) => {
-						process.terminate()?;
-						panic!("{err}");
-					}
+					Err(err) => panic!("{err}"),
 				};
 
 				if !check_syscall(&entry) {
-					process.terminate()?;
 					panic!("invalid syscall {entry:?}");
 				}