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, 168 insertions, 0 deletions

diff --git a/src/regress/lib/libc/sys/t_pipe.c b/src/regress/lib/libc/sys/t_pipe.c
new file mode 100644
index 0000000000..bd9805a4b9
--- /dev/null
+++ b/src/regress/lib/libc/sys/t_pipe.c
@@ -0,0 +1,168 @@
+/*      $OpenBSD: t_pipe.c,v 1.1.1.1 2019/11/19 19:57:04 bluhm Exp $    */
+/* $NetBSD: t_pipe.c,v 1.5 2017/01/13 21:30:41 christos Exp $ */
+
+/*-
+ * Copyright (c) 2001, 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.
+ */
+
+#include "macros.h"
+
+#include <sys/cdefs.h>
+#include <sys/cdefs.h>
+__COPYRIGHT("@(#) Copyright (c) 2008\
+ The NetBSD Foundation, inc. All rights reserved.");
+__RCSID("$NetBSD: t_pipe.c,v 1.5 2017/01/13 21:30:41 christos Exp $");
+
+#include <sys/types.h>
+#include <sys/wait.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <sched.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "atf-c.h"
+
+#include "h_macros.h"
+
+static pid_t pid;
+static int nsiginfo = 0;
+
+/*
+ * This is used for both parent and child. Handle parent's SIGALRM,
+ * the childs SIGINFO doesn't need anything.
+ */
+static void
+sighand(int sig)
+{
+        if (sig == SIGALRM) {
+                kill(pid, SIGINFO);
+        }
+        if (sig == SIGINFO) {
+                nsiginfo++;
+        }
+}
+
+ATF_TC(pipe_restart);
+ATF_TC_HEAD(pipe_restart, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Checks that writing to pipe "
+            "works correctly after being interrupted and restarted "
+            "(kern/14087)");
+}
+
+ATF_TC_BODY(pipe_restart, tc)
+{
+        int pp[2], st;
+        ssize_t sz, todo, done;
+        char *f;
+        sigset_t asigset, osigset, emptysigset;
+
+        /* Initialise signal masks */
+        RL(sigemptyset(&emptysigset));
+        RL(sigemptyset(&asigset));
+        RL(sigaddset(&asigset, SIGINFO));
+
+        /* Register signal handlers for both read and writer */
+        REQUIRE_LIBC(signal(SIGINFO, sighand), SIG_ERR);
+        REQUIRE_LIBC(signal(SIGALRM, sighand), SIG_ERR);
+
+        todo = 2 * 1024 * 1024;
+        REQUIRE_LIBC(f = malloc(todo), NULL);
+
+        RL(pipe(pp));
+
+        RL(pid = fork());
+        if (pid == 0) {
+                /* child */
+                RL(close(pp[1]));
+
+                /* Do inital write. This should succeed, make
+                 * the other side do partial write and wait for us to pick
+                 * rest up.
+                 */
+                RL(done = read(pp[0], f, 128 * 1024));
+
+                /* Wait until parent is alarmed and awakens us */
+                RL(sigprocmask(SIG_BLOCK, &asigset, &osigset));
+                while (nsiginfo == 0) {
+                        if (sigsuspend(&emptysigset) != -1 || errno != EINTR)
+                                atf_tc_fail("sigsuspend(&emptysigset): %s",
+                                    strerror(errno));
+                }
+                RL(sigprocmask(SIG_SETMASK, &osigset, NULL));
+
+                /* Read all what parent wants to give us */
+                while((sz = read(pp[0], f, 1024 * 1024)) > 0)
+                        done += sz;
+
+                /*
+                 * Exit with 1 if number of bytes read doesn't match
+                 * number of expected bytes
+                 */
+                printf("Read:     %#zx\n", (size_t)done);
+                printf("Expected: %#zx\n", (size_t)todo);
+
+                exit(done != todo);
+
+                /* NOTREACHED */
+        } else {
+                RL(close(pp[0]));
+
+                /*
+                 * Arrange for alarm after two seconds. Since we have
+                 * handler setup for SIGARLM, the write(2) call should
+                 * be restarted internally by kernel.
+                 */
+                (void)alarm(2);
+
+                /* We write exactly 'todo' bytes. The very first write(2)
+                 * should partially succeed, block and eventually
+                 * be restarted by kernel
+                 */
+                while(todo > 0 && ((sz = write(pp[1], f, todo)) > 0))
+                        todo -= sz;
+
+                /* Close the pipe, so that child would stop reading */
+                RL(close(pp[1]));
+
+                /* And pickup child's exit status */
+                RL(waitpid(pid, &st, 0));
+
+                ATF_REQUIRE_EQ(WEXITSTATUS(st), 0);
+        }
+        free(f);
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+        ATF_TP_ADD_TC(tp, pipe_restart);
+
+        return atf_no_error();
+}