230 lines
7.1 KiB
C++
230 lines
7.1 KiB
C++
// Copyright 2020 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <errno.h>
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#include <fcntl.h>
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#include <linux/fuse.h>
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#include <sys/stat.h>
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#include <sys/statfs.h>
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <unistd.h>
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#include <vector>
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#include "gtest/gtest.h"
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#include "test/fuse/linux/fuse_fd_util.h"
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#include "test/util/cleanup.h"
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#include "test/util/fs_util.h"
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#include "test/util/fuse_util.h"
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#include "test/util/test_util.h"
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namespace gvisor {
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namespace testing {
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namespace {
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class StatTest : public FuseFdTest {
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public:
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void SetUp() override {
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FuseFdTest::SetUp();
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test_file_path_ = JoinPath(mount_point_.path(), test_file_);
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}
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protected:
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bool StatsAreEqual(struct stat expected, struct stat actual) {
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// Device number will be dynamically allocated by kernel, we cannot know in
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// advance.
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actual.st_dev = expected.st_dev;
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return memcmp(&expected, &actual, sizeof(struct stat)) == 0;
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}
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const std::string test_file_ = "testfile";
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const mode_t expected_mode = S_IFREG | S_IRUSR | S_IWUSR;
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const uint64_t fh = 23;
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std::string test_file_path_;
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};
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TEST_F(StatTest, StatNormal) {
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// Set up fixture.
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struct fuse_attr attr = DefaultFuseAttr(expected_mode, 1);
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struct fuse_out_header out_header = {
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.len = sizeof(struct fuse_out_header) + sizeof(struct fuse_attr_out),
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};
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struct fuse_attr_out out_payload = {
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.attr = attr,
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};
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auto iov_out = FuseGenerateIovecs(out_header, out_payload);
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SetServerResponse(FUSE_GETATTR, iov_out);
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// Make syscall.
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struct stat stat_buf;
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EXPECT_THAT(stat(mount_point_.path().c_str(), &stat_buf), SyscallSucceeds());
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// Check filesystem operation result.
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struct stat expected_stat = {
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.st_ino = attr.ino,
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#ifdef __aarch64__
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.st_mode = expected_mode,
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.st_nlink = attr.nlink,
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#else
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.st_nlink = attr.nlink,
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.st_mode = expected_mode,
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#endif
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.st_uid = attr.uid,
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.st_gid = attr.gid,
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.st_rdev = attr.rdev,
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.st_size = static_cast<off_t>(attr.size),
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.st_blksize = attr.blksize,
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.st_blocks = static_cast<blkcnt_t>(attr.blocks),
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.st_atim = (struct timespec){.tv_sec = static_cast<int>(attr.atime),
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.tv_nsec = attr.atimensec},
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.st_mtim = (struct timespec){.tv_sec = static_cast<int>(attr.mtime),
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.tv_nsec = attr.mtimensec},
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.st_ctim = (struct timespec){.tv_sec = static_cast<int>(attr.ctime),
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.tv_nsec = attr.ctimensec},
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};
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EXPECT_TRUE(StatsAreEqual(stat_buf, expected_stat));
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// Check FUSE request.
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struct fuse_in_header in_header;
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struct fuse_getattr_in in_payload;
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auto iov_in = FuseGenerateIovecs(in_header, in_payload);
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GetServerActualRequest(iov_in);
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EXPECT_EQ(in_header.opcode, FUSE_GETATTR);
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EXPECT_EQ(in_payload.getattr_flags, 0);
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EXPECT_EQ(in_payload.fh, 0);
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}
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TEST_F(StatTest, StatNotFound) {
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// Set up fixture.
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struct fuse_out_header out_header = {
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.len = sizeof(struct fuse_out_header),
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.error = -ENOENT,
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};
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auto iov_out = FuseGenerateIovecs(out_header);
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SetServerResponse(FUSE_GETATTR, iov_out);
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// Make syscall.
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struct stat stat_buf;
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EXPECT_THAT(stat(mount_point_.path().c_str(), &stat_buf),
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SyscallFailsWithErrno(ENOENT));
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// Check FUSE request.
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struct fuse_in_header in_header;
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struct fuse_getattr_in in_payload;
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auto iov_in = FuseGenerateIovecs(in_header, in_payload);
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GetServerActualRequest(iov_in);
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EXPECT_EQ(in_header.opcode, FUSE_GETATTR);
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EXPECT_EQ(in_payload.getattr_flags, 0);
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EXPECT_EQ(in_payload.fh, 0);
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}
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TEST_F(StatTest, FstatNormal) {
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// Set up fixture.
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SetServerInodeLookup(test_file_);
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auto fd = ASSERT_NO_ERRNO_AND_VALUE(OpenPath(test_file_path_, O_RDONLY, fh));
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auto close_fd = CloseFD(fd);
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struct fuse_attr attr = DefaultFuseAttr(expected_mode, 2);
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struct fuse_out_header out_header = {
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.len = sizeof(struct fuse_out_header) + sizeof(struct fuse_attr_out),
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};
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struct fuse_attr_out out_payload = {
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.attr = attr,
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};
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auto iov_out = FuseGenerateIovecs(out_header, out_payload);
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SetServerResponse(FUSE_GETATTR, iov_out);
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// Make syscall.
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struct stat stat_buf;
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EXPECT_THAT(fstat(fd.get(), &stat_buf), SyscallSucceeds());
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// Check filesystem operation result.
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struct stat expected_stat = {
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.st_ino = attr.ino,
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#ifdef __aarch64__
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.st_mode = expected_mode,
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.st_nlink = attr.nlink,
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#else
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.st_nlink = attr.nlink,
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.st_mode = expected_mode,
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#endif
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.st_uid = attr.uid,
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.st_gid = attr.gid,
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.st_rdev = attr.rdev,
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.st_size = static_cast<off_t>(attr.size),
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.st_blksize = attr.blksize,
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.st_blocks = static_cast<blkcnt_t>(attr.blocks),
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.st_atim = (struct timespec){.tv_sec = static_cast<int>(attr.atime),
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.tv_nsec = attr.atimensec},
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.st_mtim = (struct timespec){.tv_sec = static_cast<int>(attr.mtime),
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.tv_nsec = attr.mtimensec},
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.st_ctim = (struct timespec){.tv_sec = static_cast<int>(attr.ctime),
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.tv_nsec = attr.ctimensec},
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};
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EXPECT_TRUE(StatsAreEqual(stat_buf, expected_stat));
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// Check FUSE request.
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struct fuse_in_header in_header;
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struct fuse_getattr_in in_payload;
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auto iov_in = FuseGenerateIovecs(in_header, in_payload);
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GetServerActualRequest(iov_in);
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EXPECT_EQ(in_header.opcode, FUSE_GETATTR);
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EXPECT_EQ(in_payload.getattr_flags, 0);
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EXPECT_EQ(in_payload.fh, 0);
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}
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TEST_F(StatTest, StatByFileHandle) {
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// Set up fixture.
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SetServerInodeLookup(test_file_, expected_mode, 0);
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auto fd = ASSERT_NO_ERRNO_AND_VALUE(OpenPath(test_file_path_, O_RDONLY, fh));
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auto close_fd = CloseFD(fd);
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struct fuse_attr attr = DefaultFuseAttr(expected_mode, 2, 0);
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struct fuse_out_header out_header = {
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.len = sizeof(struct fuse_out_header) + sizeof(struct fuse_attr_out),
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};
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struct fuse_attr_out out_payload = {
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.attr = attr,
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};
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auto iov_out = FuseGenerateIovecs(out_header, out_payload);
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SetServerResponse(FUSE_GETATTR, iov_out);
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// Make syscall.
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std::vector<char> buf(1);
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// Since this is an empty file, it won't issue FUSE_READ. But a FUSE_GETATTR
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// will be issued before read completes.
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EXPECT_THAT(read(fd.get(), buf.data(), buf.size()), SyscallSucceeds());
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// Check FUSE request.
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struct fuse_in_header in_header;
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struct fuse_getattr_in in_payload;
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auto iov_in = FuseGenerateIovecs(in_header, in_payload);
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GetServerActualRequest(iov_in);
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EXPECT_EQ(in_header.opcode, FUSE_GETATTR);
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EXPECT_EQ(in_payload.getattr_flags, FUSE_GETATTR_FH);
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EXPECT_EQ(in_payload.fh, fh);
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}
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} // namespace
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} // namespace testing
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} // namespace gvisor
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