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// 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 <vector>
#include "gtest/gtest.h"
#include "test/fuse/linux/fuse_base.h"
#include "test/util/test_util.h"
namespace gvisor {
namespace testing {
namespace {
class StatTest : public FuseTest {
public:
bool StatsAreEqual(struct stat expected, struct stat actual) {
// device number will be dynamically allocated by kernel, we cannot know
// in advance
actual.st_dev = expected.st_dev;
return memcmp(&expected, &actual, sizeof(struct stat)) == 0;
}
};
TEST_F(StatTest, StatNormal) {
// Set up fixture.
std::vector<struct iovec> iov_in(2);
std::vector<struct iovec> iov_out(2);
mode_t expected_mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH;
struct timespec atime = {.tv_sec = 1595436289, .tv_nsec = 134150844};
struct timespec mtime = {.tv_sec = 1595436290, .tv_nsec = 134150845};
struct timespec ctime = {.tv_sec = 1595436291, .tv_nsec = 134150846};
struct fuse_out_header out_header = {
.len = sizeof(struct fuse_out_header) + sizeof(struct fuse_attr_out),
.error = 0,
};
struct fuse_attr attr = {
.ino = 1,
.size = 512,
.blocks = 4,
.atime = static_cast<uint64_t>(atime.tv_sec),
.mtime = static_cast<uint64_t>(mtime.tv_sec),
.ctime = static_cast<uint64_t>(ctime.tv_sec),
.atimensec = static_cast<uint32_t>(atime.tv_nsec),
.mtimensec = static_cast<uint32_t>(mtime.tv_nsec),
.ctimensec = static_cast<uint32_t>(ctime.tv_nsec),
.mode = expected_mode,
.nlink = 2,
.uid = 1234,
.gid = 4321,
.rdev = 12,
.blksize = 4096,
};
struct fuse_attr_out out_payload = {
.attr = attr,
};
iov_out[0].iov_len = sizeof(out_header);
iov_out[0].iov_base = &out_header;
iov_out[1].iov_len = sizeof(out_payload);
iov_out[1].iov_base = &out_payload;
SetServerResponse(FUSE_GETATTR, iov_out);
// Do integration test.
struct stat stat_buf;
EXPECT_THAT(stat(mount_point_.path().c_str(), &stat_buf), SyscallSucceeds());
// Check filesystem operation result.
struct stat expected_stat = {
.st_ino = attr.ino,
.st_nlink = attr.nlink,
.st_mode = expected_mode,
.st_uid = attr.uid,
.st_gid = attr.gid,
.st_rdev = attr.rdev,
.st_size = static_cast<off_t>(attr.size),
.st_blksize = attr.blksize,
.st_blocks = static_cast<blkcnt_t>(attr.blocks),
.st_atim = atime,
.st_mtim = mtime,
.st_ctim = ctime,
};
EXPECT_TRUE(StatsAreEqual(stat_buf, expected_stat));
// Check FUSE request.
struct fuse_in_header in_header;
struct fuse_getattr_in in_payload;
iov_in[0].iov_len = sizeof(in_header);
iov_in[0].iov_base = &in_header;
iov_in[1].iov_len = sizeof(in_payload);
iov_in[1].iov_base = &in_payload;
GetServerActualRequest(iov_in);
EXPECT_EQ(in_header.opcode, FUSE_GETATTR);
EXPECT_EQ(in_payload.getattr_flags, 0);
EXPECT_EQ(in_payload.fh, 0);
}
TEST_F(StatTest, StatNotFound) {
// Set up fixture.
std::vector<struct iovec> iov_in(2);
std::vector<struct iovec> iov_out(1);
struct fuse_out_header out_header = {
.len = sizeof(struct fuse_out_header),
.error = -ENOENT,
};
iov_out[0].iov_len = sizeof(out_header);
iov_out[0].iov_base = &out_header;
SetServerResponse(FUSE_GETATTR, iov_out);
// Do integration test.
struct stat stat_buf;
EXPECT_THAT(stat(mount_point_.path().c_str(), &stat_buf),
SyscallFailsWithErrno(ENOENT));
// Check FUSE request.
struct fuse_in_header in_header;
struct fuse_getattr_in in_payload;
iov_in[0].iov_len = sizeof(in_header);
iov_in[0].iov_base = &in_header;
iov_in[1].iov_len = sizeof(in_payload);
iov_in[1].iov_base = &in_payload;
GetServerActualRequest(iov_in);
EXPECT_EQ(in_header.opcode, FUSE_GETATTR);
EXPECT_EQ(in_payload.getattr_flags, 0);
EXPECT_EQ(in_payload.fh, 0);
}
} // namespace
} // namespace testing
} // namespace gvisor
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