Enable ptrace on all Linux platforms

Nothing that nix currently binds is architecture-specific, and Android
supports ptrace just as much as non-Android Linux.

2 files changed, 16 insertions, 0 deletions

diff --git a/test/sys/mod.rs b/test/sys/mod.rs
index e93b0d28..4edb6af0 100644
--- a/test/sys/mod.rs
+++ b/test/sys/mod.rs
@@ -13,3 +13,5 @@ mod test_uio;
 #[cfg(target_os = "linux")]
 mod test_epoll;
 mod test_pthread;
+#[cfg(any(target_os = "linux", target_os = "android"))]
+mod test_ptrace;
diff --git a/test/sys/test_ptrace.rs b/test/sys/test_ptrace.rs
new file mode 100644
index 00000000..6318495a
--- /dev/null
+++ b/test/sys/test_ptrace.rs
@@ -0,0 +1,14 @@
+use nix::Error;
+use nix::errno::*;
+use nix::unistd::*;
+use nix::sys::ptrace::*;
+use nix::sys::ptrace::ptrace::*;
+use std::ptr;
+
+#[test]
+fn test_ptrace() {
+    // Just make sure ptrace can be called at all, for now.
+    // FIXME: qemu-user doesn't implement ptrace on all arches, so permit ENOSYS
+    let err = ptrace(PTRACE_ATTACH, getpid(), ptr::null_mut(), ptr::null_mut()).unwrap_err();
+    assert!(err == Error::Sys(Errno::EPERM) || err == Error::Sys(Errno::ENOSYS));
+}