Reland: Introduce sys_sigprocmask and sys_sigaction. (patchset #5 id:160001 of https://codereview.c…

sandbox/linux/seccomp-bpf/trap_unittest.cc

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "sandbox/linux/seccomp-bpf/trap.h"
+
+#include <sys/types.h>
+#include <signal.h>
+
+#include "sandbox/linux/tests/unit_tests.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace sandbox {
+namespace {
+
+SANDBOX_TEST_ALLOW_NOISE(Trap, SigSysAction) {
+  // This creates a global Trap instance, and registers the signal handler
+  // (Trap::SigSysAction).
+  Trap::Registry();
+
+  // Send SIGSYS to self. If signal handler (SigSysAction) is not registered,
+  // the process will be terminated with status code -SIGSYS.
+  // Note that, SigSysAction handler would outputs an error message

[mdempsky, 2015/04/21 17:37:33]

nit: "would output"

[hidehiko, 2015/04/22 06:54:36]

Done.

+  // "Unexpected SIGSYS received." so it is necessary to allow the noise.
+  kill(getpid(), SIGSYS);

[mdempsky, 2015/04/21 17:37:33]

You can just use raise(SIGSYS) and remove the <sys/types.h> header.

[hidehiko, 2015/04/22 06:54:37]

Done.

+}
+
+}

[mdempsky, 2015/04/21 17:37:33]

nit:  "}  // namespace"

[hidehiko, 2015/04/22 06:54:36]

Done.

+}  // namespace sandbox