From 2013be14f216081e3ea62b98b79c4ce3e2f17bfa Mon Sep 17 00:00:00 2001
From: Bobby Powers <bobbypowers@gmail.com>
Date: Sun, 24 Sep 2017 17:30:41 -0400
Subject: ptrace: add PTRACE_O_EXITKILL option

It is a somewhat newer option -- it requires Linux 3.8.
---
 src/sys/ptrace.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/sys/ptrace.rs b/src/sys/ptrace.rs
index 64b523c3..43a78862 100644
--- a/src/sys/ptrace.rs
+++ b/src/sys/ptrace.rs
@@ -116,6 +116,10 @@ libc_bitflags! {
         /// Stop tracee when a SECCOMP_RET_TRACE rule is triggered. See `man seccomp` for more
         /// details.
         PTRACE_O_TRACESECCOMP;
+        /// Send a SIGKILL to the tracee if the tracer exits.  This is useful
+        /// for ptrace jailers to prevent tracees from escaping their control.
+        #[cfg(any(target_os = "android", target_os = "linux"))]
+        PTRACE_O_EXITKILL;
     }
 }
 
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