1 files changed, 203 insertions, 0 deletions

diff --git a/src/regress/lib/libc/sys/t_pipe2.c b/src/regress/lib/libc/sys/t_pipe2.c
new file mode 100644
index 0000000000..4964be14ce
--- /dev/null
+++ b/src/regress/lib/libc/sys/t_pipe2.c
@@ -0,0 +1,203 @@
+/*      $OpenBSD: t_pipe2.c,v 1.1.1.1 2019/11/19 19:57:04 bluhm Exp $   */
+/* $NetBSD: t_pipe2.c,v 1.9 2017/01/13 21:19:45 christos Exp $ */
+
+/*-
+ * Copyright (c) 2011 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *        This product includes software developed by the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * 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_pipe2.c,v 1.9 2017/01/13 21:19:45 christos Exp $");
+
+#include "atf-c.h"
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/resource.h>
+
+static void
+run(int flags)
+{
+        int fd[2], i;
+
+        while ((i = open("/", O_RDONLY)) < 3)
+                ATF_REQUIRE(i != -1);
+
+        ATF_REQUIRE_MSG(closefrom(3) != -1, "closefrom failed: %s",
+            strerror(errno));
+
+        ATF_REQUIRE(pipe2(fd, flags) == 0);
+
+        ATF_REQUIRE(fd[0] == 3);
+        ATF_REQUIRE(fd[1] == 4);
+
+        if (flags & O_CLOEXEC) {
+                ATF_REQUIRE((fcntl(fd[0], F_GETFD) & FD_CLOEXEC) != 0);
+                ATF_REQUIRE((fcntl(fd[1], F_GETFD) & FD_CLOEXEC) != 0);
+        } else {
+                ATF_REQUIRE((fcntl(fd[0], F_GETFD) & FD_CLOEXEC) == 0);
+                ATF_REQUIRE((fcntl(fd[1], F_GETFD) & FD_CLOEXEC) == 0);
+        }
+
+        if (flags & O_NONBLOCK) {
+                ATF_REQUIRE((fcntl(fd[0], F_GETFL) & O_NONBLOCK) != 0);
+                ATF_REQUIRE((fcntl(fd[1], F_GETFL) & O_NONBLOCK) != 0);
+        } else {
+                ATF_REQUIRE((fcntl(fd[0], F_GETFL) & O_NONBLOCK) == 0);
+                ATF_REQUIRE((fcntl(fd[1], F_GETFL) & O_NONBLOCK) == 0);
+        }
+
+        /*
+         * Adjusted for OpenBSD, not available
+         * if (flags & O_NOSIGPIPE) {
+         *      ATF_REQUIRE(fcntl(fd[0], F_GETNOSIGPIPE) != 0);
+         *      ATF_REQUIRE(fcntl(fd[1], F_GETNOSIGPIPE) != 0);
+         *} else {
+         *      ATF_REQUIRE(fcntl(fd[0], F_GETNOSIGPIPE) == 0);
+         *      ATF_REQUIRE(fcntl(fd[1], F_GETNOSIGPIPE) == 0);
+         *}
+         */
+
+        ATF_REQUIRE(close(fd[0]) != -1);
+        ATF_REQUIRE(close(fd[1]) != -1);
+}
+
+ATF_TC(pipe2_basic);
+ATF_TC_HEAD(pipe2_basic, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "A basic test of pipe2(2)");
+}
+
+ATF_TC_BODY(pipe2_basic, tc)
+{
+        run(0);
+}
+
+ATF_TC(pipe2_consume);
+ATF_TC_HEAD(pipe2_consume, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test that consuming file descriptors "
+            "with pipe2(2) does not crash the system (PR kern/46457)");
+}
+
+ATF_TC_BODY(pipe2_consume, tc)
+{
+        struct rlimit rl;
+        int err, filedes[2];
+        int old;
+
+        ATF_REQUIRE_MSG(closefrom(4) != -1, "closefrom failed: %s",
+            strerror(errno));
+
+        err = getrlimit(RLIMIT_NOFILE, &rl);
+        ATF_REQUIRE(err == 0);
+        /*
+         * The heart of this test is to run against the number of open
+         * file descriptor limit in the middle of a pipe2() call - i.e.
+         * before the call only a single descriptor may be openend.
+         */
+        old = rl.rlim_cur;
+        rl.rlim_cur = 4;
+        err = setrlimit(RLIMIT_NOFILE, &rl);
+        ATF_REQUIRE(err == 0);
+
+        err = pipe2(filedes, O_CLOEXEC);
+        ATF_REQUIRE(err == -1);
+        rl.rlim_cur = old;
+        err = setrlimit(RLIMIT_NOFILE, &rl);
+}
+
+ATF_TC(pipe2_nonblock);
+ATF_TC_HEAD(pipe2_nonblock, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "A non-blocking test of pipe2(2)");
+}
+
+ATF_TC_BODY(pipe2_nonblock, tc)
+{
+        run(O_NONBLOCK);
+}
+
+ATF_TC(pipe2_cloexec);
+ATF_TC_HEAD(pipe2_cloexec, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "A close-on-exec test of pipe2(2)");
+}
+
+ATF_TC_BODY(pipe2_cloexec, tc)
+{
+        run(O_CLOEXEC);
+}
+
+ATF_TC(pipe2_nosigpipe);
+ATF_TC_HEAD(pipe2_nosigpipe, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "A no sigpipe test of pipe2(2)");
+}
+
+ATF_TC_BODY(pipe2_nosigpipe, tc)
+{
+        run(O_NOSIGPIPE);
+}
+
+ATF_TC(pipe2_einval);
+ATF_TC_HEAD(pipe2_einval, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "A error check of pipe2(2)");
+}
+
+ATF_TC_BODY(pipe2_einval, tc)
+{
+        int fd[2];
+        ATF_REQUIRE_ERRNO(EINVAL, pipe2(fd, O_ASYNC) == -1);
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+        ATF_TP_ADD_TC(tp, pipe2_basic);
+        ATF_TP_ADD_TC(tp, pipe2_consume);
+        ATF_TP_ADD_TC(tp, pipe2_nonblock);
+        ATF_TP_ADD_TC(tp, pipe2_cloexec);
+        /*
+         * Adjusted for OpenBSD, not available
+         * ATF_TP_ADD_TC(tp, pipe2_nosigpipe);
+         */
+        ATF_TP_ADD_TC(tp, pipe2_einval);
+
+        return atf_no_error();
+}