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();
+}