1 files changed, 156 insertions, 0 deletions

diff --git a/src/regress/lib/libc/sys/t_sigaction.c b/src/regress/lib/libc/sys/t_sigaction.c
new file mode 100644
index 0000000000..21c793d74a
--- /dev/null
+++ b/src/regress/lib/libc/sys/t_sigaction.c
@@ -0,0 +1,156 @@
+/*      $OpenBSD: t_sigaction.c,v 1.1.1.1 2019/11/19 19:57:04 bluhm Exp $       */
+/* $NetBSD: t_sigaction.c,v 1.5 2017/01/13 21:30:41 christos Exp $ */
+
+/*-
+ * Copyright (c) 2010 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.
+ */
+
+#include "macros.h"
+
+#include <sys/cdefs.h>
+__COPYRIGHT("@(#) Copyright (c) 2010\
+ The NetBSD Foundation, inc. All rights reserved.");
+__RCSID("$NetBSD: t_sigaction.c,v 1.5 2017/01/13 21:30:41 christos Exp $");
+
+#include <sys/wait.h>
+
+#include <signal.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "atf-c.h"
+
+#include "h_macros.h"
+
+static bool handler_called = false;
+
+static void
+handler(int signo __unused)
+{
+    handler_called = true;
+}
+
+static void
+sa_resethand_child(const int flags)
+{
+    struct sigaction sa;
+
+    sa.sa_flags = flags;
+    sa.sa_handler = &handler;
+    sigemptyset(&sa.sa_mask);
+
+    sigaction(SIGUSR1, &sa, NULL);
+    kill(getpid(), SIGUSR1);
+    exit(handler_called ? EXIT_SUCCESS : EXIT_FAILURE);
+}
+
+static void
+wait_and_check_child(const pid_t pid, const char *fail_message)
+{
+        int status;
+
+        (void)waitpid(pid, &status, 0);
+
+        if (WIFEXITED(status))
+                ATF_CHECK_EQ(EXIT_SUCCESS, WEXITSTATUS(status));
+        else
+                atf_tc_fail("%s; raw exit status was %d", fail_message, status);
+}
+
+static void
+catch(int sig __unused)
+{
+        return;
+}
+
+ATF_TC(sigaction_basic);
+ATF_TC_HEAD(sigaction_basic, tc)
+{
+
+        atf_tc_set_md_var(tc, "descr", "Checks for correct I&D cache"
+            "synchronization after copying out the trampoline code.");
+}
+
+ATF_TC_BODY(sigaction_basic, tc)
+{
+        static struct sigaction sa;
+
+        sa.sa_handler = catch;
+
+        sigaction(SIGUSR1, &sa, 0);
+        kill(getpid(), SIGUSR1);
+        atf_tc_pass();
+}
+
+ATF_TC(sigaction_noflags);
+ATF_TC_HEAD(sigaction_noflags, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Checks programming a signal with "
+            "sigaction(2) but without any flags");
+}
+
+ATF_TC_BODY(sigaction_noflags, tc)
+{
+        const pid_t pid = fork();
+        if (pid == -1)
+                atf_tc_fail_errno("fork(2) failed");
+        else if (pid == 0)
+                sa_resethand_child(0);
+        else
+                wait_and_check_child(pid, "Child process did not exit cleanly;"
+                    " it failed to process the signal");
+}
+
+ATF_TC(sigaction_resethand);
+ATF_TC_HEAD(sigaction_resethand, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Checks that SA_RESETHAND works");
+}
+
+ATF_TC_BODY(sigaction_resethand, tc)
+{
+        const pid_t pid = fork();
+        if (pid == -1)
+                atf_tc_fail_errno("fork(2) failed");
+        else if (pid == 0)
+                sa_resethand_child(SA_RESETHAND);
+        else {
+                wait_and_check_child(pid, "Child process did not exit cleanly;"
+                    " it either failed to process the signal or SA_RESETHAND"
+                    " is broken");
+        }
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+        ATF_TP_ADD_TC(tp, sigaction_basic);
+        ATF_TP_ADD_TC(tp, sigaction_noflags);
+        ATF_TP_ADD_TC(tp, sigaction_resethand);
+
+        return atf_no_error();
+}