fuse(4): add tests for FUSE_OPENDIR, FUSE_FSYNC, and FUSE_FSYNCDIR

And one more for FUSE_WRITE, too.

PR:		236379
PR:		236473
PR:		236474
Sponsored by:	The FreeBSD Foundation

1 files changed, 123 insertions, 0 deletions

diff --git a/tests/sys/fs/fuse/opendir.cc b/tests/sys/fs/fuse/opendir.cc
new file mode 100644
index 000000000000..e312b39e8d86
--- /dev/null
+++ b/tests/sys/fs/fuse/opendir.cc
@@ -0,0 +1,123 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2019 The FreeBSD Foundation
+ *
+ * This software was developed by BFF Storage Systems, LLC under sponsorship
+ * from the FreeBSD Foundation.
+ *
+ * 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 AUTHOR 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 AUTHOR 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.
+ */
+
+extern "C" {
+#include <fcntl.h>
+}
+
+#include "mockfs.hh"
+#include "utils.hh"
+
+using namespace testing;
+
+class Opendir: public FuseTest {
+public:
+void expect_lookup(const char *relpath, uint64_t ino)
+{
+	EXPECT_LOOKUP(1, relpath).WillRepeatedly(Invoke([=](auto in, auto out) {
+		out->header.unique = in->header.unique;
+		SET_OUT_HEADER_LEN(out, entry);
+		out->body.entry.attr.mode = S_IFDIR | 0755;
+		out->body.entry.nodeid = ino;
+		out->body.entry.attr_valid = UINT64_MAX;
+	}));
+}
+};
+
+
+/* 
+ * The fuse daemon fails the request with enoent.  This usually indicates a
+ * race condition: some other FUSE client removed the file in between when the
+ * kernel checked for it with lookup and tried to open it
+ */
+TEST_F(Opendir, enoent)
+{
+	const char FULLPATH[] = "mountpoint/some_dir";
+	const char RELPATH[] = "some_dir";
+	uint64_t ino = 42;
+
+	expect_lookup(RELPATH, ino);
+
+	EXPECT_CALL(*m_mock, process(
+		ResultOf([=](auto in) {
+			return (in->header.opcode == FUSE_OPENDIR &&
+				in->header.nodeid == ino);
+		}, Eq(true)),
+		_)
+	).WillOnce(Invoke(ReturnErrno(ENOENT)));
+	EXPECT_NE(0, open(FULLPATH, O_DIRECTORY));
+	EXPECT_EQ(ENOENT, errno);
+}
+
+/* 
+ * The daemon is responsible for checking file permissions (unless the
+ * default_permissions mount option was used)
+ */
+TEST_F(Opendir, eperm)
+{
+	const char FULLPATH[] = "mountpoint/some_dir";
+	const char RELPATH[] = "some_dir";
+	uint64_t ino = 42;
+
+	expect_lookup(RELPATH, ino);
+
+	EXPECT_CALL(*m_mock, process(
+		ResultOf([=](auto in) {
+			return (in->header.opcode == FUSE_OPENDIR &&
+				in->header.nodeid == ino);
+		}, Eq(true)),
+		_)
+	).WillOnce(Invoke(ReturnErrno(EPERM)));
+
+	EXPECT_NE(0, open(FULLPATH, O_DIRECTORY));
+	EXPECT_EQ(EPERM, errno);
+}
+
+TEST_F(Opendir, ok)
+{
+	const char FULLPATH[] = "mountpoint/some_dir";
+	const char RELPATH[] = "some_dir";
+	uint64_t ino = 42;
+
+	expect_lookup(RELPATH, ino);
+
+	EXPECT_CALL(*m_mock, process(
+		ResultOf([=](auto in) {
+			return (in->header.opcode == FUSE_OPENDIR &&
+				in->header.nodeid == ino);
+		}, Eq(true)),
+		_)
+	).WillOnce(Invoke([=](auto in, auto out) {
+		out->header.unique = in->header.unique;
+		SET_OUT_HEADER_LEN(out, open);
+	}));
+
+	EXPECT_LE(0, open(FULLPATH, O_DIRECTORY)) << strerror(errno);
+}