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, 162 insertions, 0 deletions

diff --git a/src/regress/lib/libc/sys/t_unlink.c b/src/regress/lib/libc/sys/t_unlink.c
new file mode 100644
index 0000000000..9736d77593
--- /dev/null
+++ b/src/regress/lib/libc/sys/t_unlink.c
@@ -0,0 +1,162 @@
+/*      $OpenBSD: t_unlink.c,v 1.1.1.1 2019/11/19 19:57:04 bluhm Exp $  */
+/* $NetBSD: t_unlink.c,v 1.4 2017/01/14 20:55:26 christos 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_unlink.c,v 1.4 2017/01/14 20:55:26 christos Exp $");
+
+#include <sys/stat.h>
+
+#include "atf-c.h"
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <string.h>
+#include <unistd.h>
+
+static char      path[] = "unlink";
+
+ATF_TC_WITH_CLEANUP(unlink_basic);
+ATF_TC_HEAD(unlink_basic, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "A basic test of unlink(2)");
+}
+
+ATF_TC_BODY(unlink_basic, tc)
+{
+        const size_t n = 512;
+        size_t i;
+        int fd;
+
+        for (i = 0; i < n; i++) {
+
+                fd = open(path, O_RDWR | O_CREAT, 0666);
+
+                ATF_REQUIRE(fd != -1);
+                ATF_REQUIRE(close(fd) == 0);
+                ATF_REQUIRE(unlink(path) == 0);
+
+                errno = 0;
+                ATF_REQUIRE_ERRNO(ENOENT, open(path, O_RDONLY) == -1);
+        }
+}
+
+ATF_TC_CLEANUP(unlink_basic, tc)
+{
+        (void)unlink(path);
+}
+
+ATF_TC_WITH_CLEANUP(unlink_err);
+ATF_TC_HEAD(unlink_err, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test error conditions of unlink(2)");
+}
+
+ATF_TC_BODY(unlink_err, tc)
+{
+        char buf[PATH_MAX + 1];
+
+        (void)memset(buf, 'x', sizeof(buf));
+
+        errno = 0;
+        ATF_REQUIRE_ERRNO(EBUSY, unlink("/") == -1);
+
+        errno = 0;
+        ATF_REQUIRE_ERRNO(ENAMETOOLONG, unlink(buf) == -1);
+
+        errno = 0;
+        ATF_REQUIRE_ERRNO(ENOENT, unlink("/a/b/c/d/e/f/g/h/i/j/k/l/m") == -1);
+}
+
+ATF_TC_CLEANUP(unlink_err, tc)
+{
+        (void)unlink(path);
+}
+
+ATF_TC_WITH_CLEANUP(unlink_fifo);
+ATF_TC_HEAD(unlink_fifo, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test unlink(2) for a FIFO");
+}
+
+ATF_TC_BODY(unlink_fifo, tc)
+{
+
+        ATF_REQUIRE(mkfifo(path, 0666) == 0);
+        ATF_REQUIRE(unlink(path) == 0);
+
+        errno = 0;
+        ATF_REQUIRE_ERRNO(ENOENT, open(path, O_RDONLY) == -1);
+}
+
+ATF_TC_CLEANUP(unlink_fifo, tc)
+{
+        (void)unlink(path);
+}
+
+ATF_TC_WITH_CLEANUP(unlink_perm);
+ATF_TC_HEAD(unlink_perm, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test permissions with unlink(2)");
+        atf_tc_set_md_var(tc, "require.user", "unprivileged");
+}
+
+ATF_TC_BODY(unlink_perm, tc)
+{
+        int rv;
+
+        errno = 0;
+        rv = unlink("/etc");
+        ATF_REQUIRE_MSG(rv == -1 && (errno == EACCES || errno == EPERM),
+            "unlinking a directory did not fail with EPERM or EACCESS; "
+            "unlink() returned %d, errno %d", rv, errno);
+
+        errno = 0;
+        ATF_REQUIRE_ERRNO(EACCES, unlink("/root/.profile") == -1);
+}
+
+ATF_TC_CLEANUP(unlink_perm, tc)
+{
+        (void)unlink(path);
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+        ATF_TP_ADD_TC(tp, unlink_basic);
+        ATF_TP_ADD_TC(tp, unlink_err);
+        ATF_TP_ADD_TC(tp, unlink_fifo);
+        ATF_TP_ADD_TC(tp, unlink_perm);
+
+        return atf_no_error();
+}