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authorBoyuan He <heboyuan@google.com>2020-08-18 21:51:06 +0000
committerAndrei Vagin <avagin@gmail.com>2020-09-11 13:35:25 -0700
commite6c69537b2c73920ec7cbf28cffbdedee1651792 (patch)
tree1b982f45c023e7daf1b6fac9d88b255b3bbb08fa /test/fuse/linux/mknod_test.cc
parentccd1a64049df263355d1401da46c78ec2236455c (diff)
Implement FUSE_MKNOD
Fixes #3492
Diffstat (limited to 'test/fuse/linux/mknod_test.cc')
-rw-r--r--test/fuse/linux/mknod_test.cc107
1 files changed, 107 insertions, 0 deletions
diff --git a/test/fuse/linux/mknod_test.cc b/test/fuse/linux/mknod_test.cc
new file mode 100644
index 000000000..74c74d76b
--- /dev/null
+++ b/test/fuse/linux/mknod_test.cc
@@ -0,0 +1,107 @@
+// Copyright 2020 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <errno.h>
+#include <fcntl.h>
+#include <linux/fuse.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <string>
+#include <vector>
+
+#include "gtest/gtest.h"
+#include "test/fuse/linux/fuse_base.h"
+#include "test/util/fuse_util.h"
+#include "test/util/temp_umask.h"
+#include "test/util/test_util.h"
+
+namespace gvisor {
+namespace testing {
+
+namespace {
+
+class MknodTest : public FuseTest {
+ protected:
+ const std::string test_file_ = "test_file";
+ const mode_t perms_ = S_IRWXU | S_IRWXG | S_IRWXO;
+};
+
+TEST_F(MknodTest, RegularFile) {
+ const std::string test_file_path =
+ JoinPath(mount_point_.path().c_str(), test_file_);
+ const mode_t new_umask = 0077;
+
+ struct fuse_out_header out_header = {
+ .len = sizeof(struct fuse_out_header) + sizeof(struct fuse_entry_out),
+ };
+ struct fuse_entry_out out_payload = DefaultEntryOut(S_IFREG | perms_, 5);
+ auto iov_out = FuseGenerateIovecs(out_header, out_payload);
+ SetServerResponse(FUSE_MKNOD, iov_out);
+ TempUmask mask(new_umask);
+ ASSERT_THAT(mknod(test_file_path.c_str(), perms_, 0), SyscallSucceeds());
+
+ struct fuse_in_header in_header;
+ struct fuse_mknod_in in_payload;
+ std::vector<char> actual_file(test_file_.length() + 1);
+ auto iov_in = FuseGenerateIovecs(in_header, in_payload, actual_file);
+ GetServerActualRequest(iov_in);
+
+ EXPECT_EQ(in_header.len,
+ sizeof(in_header) + sizeof(in_payload) + test_file_.length() + 1);
+ EXPECT_EQ(in_header.opcode, FUSE_MKNOD);
+ EXPECT_EQ(in_payload.mode & 0777, perms_ & ~new_umask);
+ EXPECT_EQ(in_payload.umask, new_umask);
+ EXPECT_EQ(in_payload.rdev, 0);
+ EXPECT_EQ(std::string(actual_file.data()), test_file_);
+}
+
+TEST_F(MknodTest, FileTypeError) {
+ const std::string test_file_path =
+ JoinPath(mount_point_.path().c_str(), test_file_);
+
+ struct fuse_out_header out_header = {
+ .len = sizeof(struct fuse_out_header) + sizeof(struct fuse_entry_out),
+ };
+ // server return directory instead of regular file should cause an error.
+ struct fuse_entry_out out_payload = DefaultEntryOut(S_IFDIR | perms_, 5);
+ auto iov_out = FuseGenerateIovecs(out_header, out_payload);
+ SetServerResponse(FUSE_MKNOD, iov_out);
+ ASSERT_THAT(mknod(test_file_path.c_str(), perms_, 0),
+ SyscallFailsWithErrno(EIO));
+ SkipServerActualRequest();
+}
+
+TEST_F(MknodTest, NodeIDError) {
+ const std::string test_file_path =
+ JoinPath(mount_point_.path().c_str(), test_file_);
+
+ struct fuse_out_header out_header = {
+ .len = sizeof(struct fuse_out_header) + sizeof(struct fuse_entry_out),
+ };
+ struct fuse_entry_out out_payload =
+ DefaultEntryOut(S_IFREG | perms_, FUSE_ROOT_ID);
+ auto iov_out = FuseGenerateIovecs(out_header, out_payload);
+ SetServerResponse(FUSE_MKNOD, iov_out);
+ ASSERT_THAT(mknod(test_file_path.c_str(), perms_, 0),
+ SyscallFailsWithErrno(EIO));
+ SkipServerActualRequest();
+}
+
+} // namespace
+
+} // namespace testing
+} // namespace gvisor