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diff --git a/unit/atf-src/tools/signals_test.cpp b/unit/atf-src/tools/signals_test.cpp
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+//
+// Automated Testing Framework (atf)
+//
+// Copyright (c) 2008 The NetBSD Foundation, Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1. Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// 2. Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in the
+// documentation and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
+// CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+// IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
+// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+// GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+// IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+// IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+
+extern "C" {
+#include <sys/types.h>
+#include <signal.h>
+#include <unistd.h>
+}
+
+#include <cerrno>
+#include <cstdlib>
+#include <iostream>
+
+#include <atf-c++.hpp>
+
+#include "defs.hpp"
+#include "exceptions.hpp"
+#include "process.hpp"
+#include "signals.hpp"
+
+// ------------------------------------------------------------------------
+// Auxiliary functions.
+// ------------------------------------------------------------------------
+
+namespace sigusr1 {
+ static bool happened = false;
+
+ static
+ void
+ handler(int signo ATF_DEFS_ATTRIBUTE_UNUSED)
+ {
+ happened = true;
+ }
+
+ static
+ void
+ program(void)
+ {
+ struct sigaction sa;
+ sa.sa_handler = handler;
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = 0;
+ if (::sigaction(SIGUSR1, &sa, NULL) == -1)
+ throw tools::system_error("sigusr1::program",
+ "sigaction(2) failed", errno);
+ }
+} // namespace sigusr1
+
+namespace sigusr1_2 {
+ static bool happened = false;
+
+ static
+ void
+ handler(int signo ATF_DEFS_ATTRIBUTE_UNUSED)
+ {
+ happened = true;
+ }
+} // namespace sigusr1_2
+
+// ------------------------------------------------------------------------
+// Tests for the "signal_holder" class.
+// ------------------------------------------------------------------------
+
+ATF_TEST_CASE(signal_holder_preserve);
+ATF_TEST_CASE_HEAD(signal_holder_preserve)
+{
+ set_md_var("descr", "Tests that signal_holder preserves the original "
+ "signal handler and restores it upon destruction");
+}
+ATF_TEST_CASE_BODY(signal_holder_preserve)
+{
+ using tools::signals::signal_holder;
+
+ sigusr1::program();
+
+ sigusr1::happened = false;
+ ::kill(::getpid(), SIGUSR1);
+ ATF_REQUIRE(sigusr1::happened);
+
+ {
+ signal_holder hld(SIGUSR1);
+ ::kill(::getpid(), SIGUSR1);
+ }
+
+ sigusr1::happened = false;
+ ::kill(::getpid(), SIGUSR1);
+ ATF_REQUIRE(sigusr1::happened);
+}
+
+ATF_TEST_CASE(signal_holder_destructor);
+ATF_TEST_CASE_HEAD(signal_holder_destructor)
+{
+ set_md_var("descr", "Tests that signal_holder processes a pending "
+ "signal upon destruction");
+}
+ATF_TEST_CASE_BODY(signal_holder_destructor)
+{
+ using tools::signals::signal_holder;
+
+ sigusr1::program();
+
+ sigusr1::happened = false;
+ ::kill(::getpid(), SIGUSR1);
+ ATF_REQUIRE(sigusr1::happened);
+
+ {
+ signal_holder hld(SIGUSR1);
+
+ sigusr1::happened = false;
+ ::kill(::getpid(), SIGUSR1);
+ ATF_REQUIRE(!sigusr1::happened);
+ }
+ ATF_REQUIRE(sigusr1::happened);
+}
+
+ATF_TEST_CASE(signal_holder_process);
+ATF_TEST_CASE_HEAD(signal_holder_process)
+{
+ set_md_var("descr", "Tests that signal_holder's process method works "
+ "to process a delayed signal explicitly");
+}
+ATF_TEST_CASE_BODY(signal_holder_process)
+{
+ using tools::signals::signal_holder;
+
+ sigusr1::program();
+
+ sigusr1::happened = false;
+ ::kill(::getpid(), SIGUSR1);
+ ATF_REQUIRE(sigusr1::happened);
+
+ {
+ signal_holder hld(SIGUSR1);
+
+ sigusr1::happened = false;
+ ::kill(::getpid(), SIGUSR1);
+ ATF_REQUIRE(!sigusr1::happened);
+
+ hld.process();
+ ATF_REQUIRE(sigusr1::happened);
+
+ sigusr1::happened = false;
+ }
+ ATF_REQUIRE(!sigusr1::happened);
+}
+
+// ------------------------------------------------------------------------
+// Tests for the "signal_programmer" class.
+// ------------------------------------------------------------------------
+
+ATF_TEST_CASE(signal_programmer_program);
+ATF_TEST_CASE_HEAD(signal_programmer_program)
+{
+ set_md_var("descr", "Tests that signal_programmer correctly installs a "
+ "handler");
+}
+ATF_TEST_CASE_BODY(signal_programmer_program)
+{
+ using tools::signals::signal_programmer;
+
+ signal_programmer sp(SIGUSR1, sigusr1_2::handler);
+
+ sigusr1_2::happened = false;
+ ::kill(::getpid(), SIGUSR1);
+ ATF_REQUIRE(sigusr1_2::happened);
+}
+
+ATF_TEST_CASE(signal_programmer_preserve);
+ATF_TEST_CASE_HEAD(signal_programmer_preserve)
+{
+ set_md_var("descr", "Tests that signal_programmer uninstalls the "
+ "handler during destruction");
+}
+ATF_TEST_CASE_BODY(signal_programmer_preserve)
+{
+ using tools::signals::signal_programmer;
+
+ sigusr1::program();
+ sigusr1::happened = false;
+
+ {
+ signal_programmer sp(SIGUSR1, sigusr1_2::handler);
+
+ sigusr1_2::happened = false;
+ ::kill(::getpid(), SIGUSR1);
+ ATF_REQUIRE(sigusr1_2::happened);
+ }
+
+ ATF_REQUIRE(!sigusr1::happened);
+ ::kill(::getpid(), SIGUSR1);
+ ATF_REQUIRE(sigusr1::happened);
+}
+
+// ------------------------------------------------------------------------
+// Tests cases for the free functions.
+// ------------------------------------------------------------------------
+
+static
+void
+reset_child(void *v ATF_DEFS_ATTRIBUTE_UNUSED)
+{
+ sigusr1::program();
+
+ sigusr1::happened = false;
+ tools::signals::reset(SIGUSR1);
+ kill(::getpid(), SIGUSR1);
+
+ if (sigusr1::happened) {
+ std::cerr << "Signal was not resetted correctly\n";
+ std::abort();
+ } else {
+ std::exit(EXIT_SUCCESS);
+ }
+}
+
+ATF_TEST_CASE(reset);
+ATF_TEST_CASE_HEAD(reset)
+{
+ set_md_var("descr", "Tests the reset function");
+}
+ATF_TEST_CASE_BODY(reset)
+{
+ tools::process::child c =
+ tools::process::fork(reset_child, tools::process::stream_inherit(),
+ tools::process::stream_inherit(), NULL);
+
+ const tools::process::status s = c.wait();
+ ATF_REQUIRE(s.exited() || s.signaled());
+ ATF_REQUIRE(!s.signaled() || s.termsig() == SIGUSR1);
+}
+
+// ------------------------------------------------------------------------
+// Main.
+// ------------------------------------------------------------------------
+
+ATF_INIT_TEST_CASES(tcs)
+{
+ // Add the tests for the "signal_holder" class.
+ ATF_ADD_TEST_CASE(tcs, signal_holder_preserve);
+ ATF_ADD_TEST_CASE(tcs, signal_holder_destructor);
+ ATF_ADD_TEST_CASE(tcs, signal_holder_process);
+
+ // Add the tests for the "signal_programmer" class.
+ ATF_ADD_TEST_CASE(tcs, signal_programmer_program);
+ ATF_ADD_TEST_CASE(tcs, signal_programmer_preserve);
+
+ // Add the test cases for the free functions.
+ ATF_ADD_TEST_CASE(tcs, reset);
+}
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