Import NetBSD system call regression tests. They were written with

ATF (Automated Testing Framework), so we use a small wrapper to map 
it to our bsd.regress.mk framework.  Only half of the 80 NetBSD
tests have been taken, the others need more work to adapt.  Of them 
34 syscall tests pass.
Moritz Buhl ported the tests to OpenBSD.

1 files changed, 316 insertions, 0 deletions

diff --git a/regress/lib/libc/sys/t_kill.c b/regress/lib/libc/sys/t_kill.c
new file mode 100644
index 00000000000..c92bbdd18bb
--- /dev/null
+++ b/regress/lib/libc/sys/t_kill.c
@@ -0,0 +1,316 @@
+/*	$OpenBSD: t_kill.c,v 1.1.1.1 2019/11/19 19:57:03 bluhm Exp $	*/
+/* $NetBSD: t_kill.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $ */
+
+/*-
+ * Copyright (c) 2011 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jukka Ruohonen.
+ *
+ * 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>
+__RCSID("$NetBSD: t_kill.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $");
+
+#include <sys/wait.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <pwd.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "atf-c.h"
+
+ATF_TC(kill_basic);
+ATF_TC_HEAD(kill_basic, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test that kill(2) works");
+}
+
+ATF_TC_BODY(kill_basic, tc)
+{
+	const int sig[] = { SIGHUP, SIGINT, SIGKILL, SIGTERM };
+	pid_t pid;
+	size_t i;
+	int sta;
+
+	for (i = 0; i < __arraycount(sig); i++) {
+
+		pid = fork();
+		ATF_REQUIRE(pid >= 0);
+
+		switch (pid) {
+
+		case 0:
+			pause();
+			break;
+
+		default:
+			ATF_REQUIRE(kill(pid, sig[i]) == 0);
+		}
+
+		(void)wait(&sta);
+
+		if (WIFSIGNALED(sta) == 0 || WTERMSIG(sta) != sig[i])
+			atf_tc_fail("kill(2) failed to kill child");
+	}
+}
+
+ATF_TC(kill_err);
+ATF_TC_HEAD(kill_err, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test error conditions of kill(2)");
+}
+
+ATF_TC_BODY(kill_err, tc)
+{
+	int rv, sta;
+	pid_t pid;
+
+	pid = fork();
+	ATF_REQUIRE(pid >= 0);
+
+	if (pid == 0) {
+
+		errno = 0;
+		rv = kill(getpid(), -1);
+
+		if (rv == 0 || errno != EINVAL)
+			_exit(EINVAL);
+
+		errno = 0;
+		rv = kill(INT_MAX, SIGUSR1);
+
+		if (rv == 0 || errno != ESRCH)
+			_exit(ESRCH);
+
+		_exit(EXIT_SUCCESS);
+	}
+
+	(void)wait(&sta);
+
+	if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS) {
+
+		if (WEXITSTATUS(sta) == EINVAL)
+			atf_tc_fail("expected EINVAL, but kill(2) succeeded");
+
+		if (WEXITSTATUS(sta) == ESRCH)
+			atf_tc_fail("expected ESRCH, but kill(2) succeeded");
+
+		atf_tc_fail("unknown error from kill(2)");
+	}
+}
+
+ATF_TC(kill_perm);
+ATF_TC_HEAD(kill_perm, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test kill(2) permissions");
+	atf_tc_set_md_var(tc, "require.user", "root");
+}
+
+ATF_TC_BODY(kill_perm, tc)
+{
+	struct passwd *pw;
+	pid_t cpid, ppid;
+	uid_t cuid = 0;
+	uid_t puid = 0;
+	int sta;
+
+	/*
+	 * Test that kill(2) fails when called
+	 * for a PID owned by another user.
+	 */
+	pw = getpwnam("operator");
+
+	if (pw != NULL)
+		cuid = pw->pw_uid;
+
+	pw = getpwnam("nobody");
+
+	if (pw != NULL)
+		puid = pw->pw_uid;
+
+	if (cuid == 0 || puid == 0 || cuid == puid)
+		atf_tc_fail("getpwnam(3) failed");
+
+	ppid = fork();
+
+	if (ppid < 0)
+		_exit(EXIT_FAILURE);
+
+	if (ppid == 0) {
+
+		cpid = fork();
+
+		if (cpid < 0)
+			_exit(EXIT_FAILURE);
+
+		if (cpid == 0) {
+
+			if (setuid(cuid) < 0)
+				_exit(EXIT_FAILURE);
+			else {
+				(void)sleep(1);
+			}
+
+			_exit(EXIT_SUCCESS);
+		}
+
+		/*
+		 * Try to kill the child after having
+		 * set the real and effective UID.
+		 */
+		if (setuid(puid) != 0)
+			_exit(EXIT_FAILURE);
+
+		errno = 0;
+
+		if (kill(cpid, SIGKILL) == 0)
+			_exit(EPERM);
+
+		if (errno != EPERM)
+			_exit(EPERM);
+
+		(void)waitpid(cpid, &sta, 0);
+
+		_exit(EXIT_SUCCESS);
+	}
+
+	(void)waitpid(ppid, &sta, 0);
+
+	if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) == EPERM)
+		atf_tc_fail("killed a process of another user");
+
+	if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS)
+		atf_tc_fail("unknown error from kill(2)");
+}
+
+ATF_TC(kill_pgrp_neg);
+ATF_TC_HEAD(kill_pgrp_neg, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test kill(2) with process group, #2");
+}
+
+ATF_TC_BODY(kill_pgrp_neg, tc)
+{
+	const int maxiter = 3;
+	pid_t cpid, ppid;
+	int i, sta;
+
+	ppid = fork();
+	ATF_REQUIRE(ppid >= 0);
+
+	if (ppid == 0) {
+
+		ATF_REQUIRE(setpgid(0, 0) == 0);
+
+		for (i = 0; i < maxiter; i++) {
+
+			cpid = fork();
+			ATF_REQUIRE(cpid >= 0);
+
+			if (cpid == 0)
+				pause();
+		}
+
+		/*
+		 * Test the variant of killpg(3); if the process number
+		 * is negative but not -1, the signal should be sent to
+		 * all processes whose process group ID is equal to the
+		 * absolute value of the process number.
+		 */
+		ATF_REQUIRE(kill(-getpgrp(), SIGKILL) == 0);
+
+		(void)sleep(1);
+
+		_exit(EXIT_SUCCESS);
+	}
+
+	(void)waitpid(ppid, &sta, 0);
+
+	if (WIFSIGNALED(sta) == 0 || WTERMSIG(sta) != SIGKILL)
+		atf_tc_fail("failed to kill(2) a process group");
+}
+
+ATF_TC(kill_pgrp_zero);
+ATF_TC_HEAD(kill_pgrp_zero, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test kill(2) with process group, #1");
+}
+
+ATF_TC_BODY(kill_pgrp_zero, tc)
+{
+	const int maxiter = 3;
+	pid_t cpid, ppid;
+	int i, sta;
+
+	ppid = fork();
+	ATF_REQUIRE(ppid >= 0);
+
+	if (ppid == 0) {
+
+		ATF_REQUIRE(setpgid(0, 0) == 0);
+
+		for (i = 0; i < maxiter; i++) {
+
+			cpid = fork();
+			ATF_REQUIRE(cpid >= 0);
+
+			if (cpid == 0)
+				pause();
+		}
+
+		/*
+		 * If the supplied process number is zero,
+		 * the signal should be sent to all processes
+		 * under the current process group.
+		 */
+		ATF_REQUIRE(kill(0, SIGKILL) == 0);
+
+		(void)sleep(1);
+
+		_exit(EXIT_SUCCESS);
+	}
+
+	(void)waitpid(ppid, &sta, 0);
+
+	if (WIFSIGNALED(sta) == 0 || WTERMSIG(sta) != SIGKILL)
+		atf_tc_fail("failed to kill(2) a process group");
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+	ATF_TP_ADD_TC(tp, kill_basic);
+	ATF_TP_ADD_TC(tp, kill_err);
+	ATF_TP_ADD_TC(tp, kill_perm);
+	ATF_TP_ADD_TC(tp, kill_pgrp_neg);
+	ATF_TP_ADD_TC(tp, kill_pgrp_zero);
+
+	return atf_no_error();
+}