1 files changed, 186 insertions, 0 deletions

diff --git a/src/regress/lib/libc/sys/t_sendrecv.c b/src/regress/lib/libc/sys/t_sendrecv.c
new file mode 100644
index 0000000000..cf44af2b3e
--- /dev/null
+++ b/src/regress/lib/libc/sys/t_sendrecv.c
@@ -0,0 +1,186 @@
+/*      $OpenBSD: t_sendrecv.c,v 1.1.1.1 2019/11/19 19:57:04 bluhm Exp $        */
+/*      $NetBSD: t_sendrecv.c,v 1.6 2019/02/03 03:19:28 mrg Exp $       */
+
+/*-
+ * Copyright (c) 2018 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.
+ *
+ * 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_sendrecv.c,v 1.6 2019/02/03 03:19:28 mrg Exp $");
+
+#include "atf-c.h"
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <string.h>
+#include <stdint.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sched.h>
+#include <signal.h>
+
+
+#define COUNT 100
+
+union packet {
+        uint8_t buf[1316];
+        uintmax_t seq;
+};
+
+static volatile sig_atomic_t rdied;
+
+static void
+handle_sigchld(__unused int pid)
+{
+
+        rdied = 1;
+}
+
+static void
+sender(int fd)
+{
+        union packet p;
+        ssize_t n;
+        p.seq = 0;
+        for (size_t i = 0; i < COUNT; i++) {
+                for (; (n = send(fd, &p, sizeof(p), 0)) == sizeof(p);
+                    p.seq++)
+                        continue;
+                printf(">>%zd %d %ju\n", n, errno, p.seq);
+                ATF_REQUIRE_MSG(errno == ENOBUFS, "send %s", strerror(errno));
+//              sched_yield();
+        }
+        printf("sender done\n");
+}
+
+static void
+receiver(int fd)
+{
+        union packet p;
+        ssize_t n;
+        uintmax_t seq = 0;
+
+        do {
+                if (rdied)
+                        return;
+                while ((n = recv(fd, &p, sizeof(p), 0), sizeof(p))
+                    == sizeof(p))
+                {
+                        if (rdied)
+                                return;
+                        if (p.seq != seq)
+                                printf("%ju != %ju\n", p.seq, seq);
+                        seq = p.seq + 1;
+                }
+                printf("<<%zd %d %ju\n", n, errno, seq);
+                if (n == 0)
+                        return;
+                ATF_REQUIRE_EQ(n, -1);
+                ATF_REQUIRE_MSG(errno == ENOBUFS, "recv %s", strerror(errno));
+        } while (p.seq < COUNT);
+}
+
+static void
+sendrecv(int rerror)
+{
+        int fd[2], error;
+        struct sigaction sa;
+
+        error = socketpair(AF_UNIX, SOCK_DGRAM, 0, fd);
+//      error = pipe(fd);
+        ATF_REQUIRE_MSG(error != -1, "socketpair failed (%s)", strerror(errno));
+
+        for (size_t i = 0; i < __arraycount(fd); i++) {
+                error = setsockopt(fd[i], SOL_SOCKET, SO_RERROR, &rerror,
+                    sizeof(rerror));
+                ATF_REQUIRE_MSG(error != -1,
+                    "setsockopt(SO_RERROR) failed (%s)", strerror(errno));
+        }
+
+        memset(&sa, 0, sizeof(sa));
+        sa.sa_flags = 0;
+        sa.sa_handler = &handle_sigchld;
+        sigemptyset(&sa.sa_mask);
+        error = sigaction(SIGCHLD, &sa, 0);
+        ATF_REQUIRE_MSG(error != -1, "sigaction failed (%s)",
+            strerror(errno));
+
+        switch (fork()) {
+        case -1:
+                ATF_REQUIRE_MSG(errno == 0,
+                    "socketpair failed (%s)", strerror(errno));
+                __unreachable();
+                /*NOTREACHED*/
+        case 0:
+                sched_yield();
+                sender(fd[0]);
+                close(fd[0]);
+                exit(EXIT_SUCCESS);
+                /*NOTREACHED*/
+        default:
+                receiver(fd[1]);
+                return;
+        }
+}
+
+ATF_TC(sendrecv_basic);
+
+ATF_TC_HEAD(sendrecv_basic, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "A basic test of send/recv(2)");
+}
+
+ATF_TC_BODY(sendrecv_basic, tc)
+{
+        sendrecv(0);
+}
+
+ATF_TC(sendrecv_rerror);
+
+ATF_TC_HEAD(sendrecv_rerror, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test send/recv(2) with receiver error");
+}
+
+ATF_TC_BODY(sendrecv_rerror, tc)
+{
+        sendrecv(1);
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+        ATF_TP_ADD_TC(tp, sendrecv_basic);
+        ATF_TP_ADD_TC(tp, sendrecv_rerror);
+
+        return atf_no_error();
+}