1 files changed, 228 insertions, 0 deletions

diff --git a/src/regress/lib/libc/sys/t_msync.c b/src/regress/lib/libc/sys/t_msync.c
new file mode 100644
index 0000000000..8e06d79d9a
--- /dev/null
+++ b/src/regress/lib/libc/sys/t_msync.c
@@ -0,0 +1,228 @@
+/*      $OpenBSD: t_msync.c,v 1.1.1.1 2019/11/19 19:57:04 bluhm Exp $   */
+/* $NetBSD: t_msync.c,v 1.3 2017/01/14 20:52:42 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_msync.c,v 1.3 2017/01/14 20:52:42 christos Exp $");
+
+#include <sys/mman.h>
+
+#include "atf-c.h"
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+static long             page = 0;
+static const off_t      off = 512;
+static const char       path[] = "msync";
+
+static const char       *msync_sync(const char *, int);
+
+static const char *
+msync_sync(const char *garbage, int flags)
+{
+        char *buf, *map = MAP_FAILED;
+        const char *str = NULL;
+        size_t len;
+        int fd, rv;
+
+        /*
+         * Create a temporary file, write
+         * one page to it, and map the file.
+         */
+        buf = malloc(page);
+
+        if (buf == NULL)
+                return NULL;
+
+        memset(buf, 'x', page);
+
+        fd = open(path, O_RDWR | O_CREAT, 0700);
+
+        if (fd < 0) {
+                free(buf);
+                return "failed to open";
+        }
+
+        ATF_REQUIRE_MSG(write(fd, buf, page) != -1, "write(2) failed: %s",
+            strerror(errno));
+
+        map = mmap(NULL, page, PROT_READ | PROT_WRITE, MAP_FILE|MAP_PRIVATE,
+             fd, 0);
+
+        if (map == MAP_FAILED) {
+                str = "failed to map";
+                goto out;
+        }
+
+        /*
+         * Seek to an arbitrary offset and
+         * write garbage to this position.
+         */
+        if (lseek(fd, off, SEEK_SET) != off) {
+                str = "failed to seek";
+                goto out;
+        }
+
+        len = strlen(garbage);
+        rv = write(fd, garbage, len);
+
+        if (rv != (ssize_t)len) {
+                str = "failed to write garbage";
+                goto out;
+        }
+
+        /*
+         * Synchronize the mapping and verify
+         * that garbage is at the given offset.
+         */
+        if (msync(map, page, flags) != 0) {
+                str = "failed to msync";
+                goto out;
+        }
+
+        if (memcmp(map + off, garbage, len) != 0) {
+                str = "msync did not synchronize";
+                goto out;
+        }
+
+out:
+        free(buf);
+
+        (void)close(fd);
+        (void)unlink(path);
+
+        if (map != MAP_FAILED)
+                (void)munmap(map, page);
+
+        return str;
+}
+
+ATF_TC(msync_async);
+ATF_TC_HEAD(msync_async, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test of msync(2), MS_ASYNC");
+}
+
+ATF_TC_BODY(msync_async, tc)
+{
+        const char *str;
+
+        str = msync_sync("garbage", MS_ASYNC);
+
+        if (str != NULL)
+                atf_tc_fail("%s", str);
+}
+
+ATF_TC(msync_err);
+ATF_TC_HEAD(msync_err, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test error conditions in msync(2)");
+}
+
+ATF_TC_BODY(msync_err, tc)
+{
+
+        char *map = MAP_FAILED;
+
+        /*
+         * Test that invalid flags error out.
+         */
+        ATF_REQUIRE(msync_sync("error", -1) != NULL);
+        ATF_REQUIRE(msync_sync("error", INT_MAX) != NULL);
+
+        errno = 0;
+
+        /*
+         * Map a page and then unmap to get an unmapped address.
+         */
+        map = mmap(NULL, page, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
+            -1, 0);
+        ATF_REQUIRE(map != MAP_FAILED);
+
+        (void)munmap(map, page);
+
+        ATF_REQUIRE(msync(map, page, MS_SYNC) != 0);
+        ATF_REQUIRE(errno == EFAULT);
+}
+
+ATF_TC(msync_invalidate);
+ATF_TC_HEAD(msync_invalidate, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test of msync(2), MS_INVALIDATE");
+}
+
+ATF_TC_BODY(msync_invalidate, tc)
+{
+        const char *str;
+
+        str = msync_sync("garbage", MS_INVALIDATE);
+
+        if (str != NULL)
+                atf_tc_fail("%s", str);
+}
+
+ATF_TC(msync_sync);
+ATF_TC_HEAD(msync_sync, tc)
+{
+        atf_tc_set_md_var(tc, "descr", "Test of msync(2), MS_SYNC");
+}
+
+ATF_TC_BODY(msync_sync, tc)
+{
+        const char *str;
+
+        str = msync_sync("garbage", MS_SYNC);
+
+        if (str != NULL)
+                atf_tc_fail("%s", str);
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+        page = sysconf(_SC_PAGESIZE);
+
+        ATF_REQUIRE(page >= 0);
+        ATF_REQUIRE(page > off);
+
+        ATF_TP_ADD_TC(tp, msync_async);
+        ATF_TP_ADD_TC(tp, msync_err);
+        ATF_TP_ADD_TC(tp, msync_invalidate);
+        ATF_TP_ADD_TC(tp, msync_sync);
+
+        return atf_no_error();
+}