mirror of
https://github.com/netbirdio/gvisor.git
synced 2026-05-22 17:12:49 -07:00
Jamie Liu
117 lines
3.2 KiB
C++
117 lines
3.2 KiB
C++
// Copyright 2021 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 <time.h>
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#include <unistd.h>
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#include <string>
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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#include "test/util/file_descriptor.h"
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#include "test/util/fs_util.h"
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#include "test/util/temp_path.h"
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#include "test/util/test_util.h"
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constexpr mode_t mode = 1;
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namespace gvisor {
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namespace testing {
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namespace {
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PosixErrorOr<FileDescriptor> createdDeleted() {
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auto path = NewTempAbsPath();
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PosixErrorOr<FileDescriptor> fd = Open(path, O_RDWR | O_CREAT, mode);
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if (!fd.ok()) {
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return fd.error();
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}
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auto err = Unlink(path);
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if (!err.ok()) {
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return err;
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}
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return fd;
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}
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TEST(DeletedTest, Utime) {
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auto fd = ASSERT_NO_ERRNO_AND_VALUE(createdDeleted());
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const struct timespec times[2] = {{10, 0}, {20, 0}};
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EXPECT_THAT(futimens(fd.get(), times), SyscallSucceeds());
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struct stat stat;
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ASSERT_THAT(fstat(fd.get(), &stat), SyscallSucceeds());
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EXPECT_EQ(10, stat.st_atime);
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EXPECT_EQ(20, stat.st_mtime);
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}
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TEST(DeletedTest, Chmod) {
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auto fd = ASSERT_NO_ERRNO_AND_VALUE(createdDeleted());
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ASSERT_THAT(fchmod(fd.get(), mode + 1), SyscallSucceeds());
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struct stat stat;
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ASSERT_THAT(fstat(fd.get(), &stat), SyscallSucceeds());
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EXPECT_EQ(mode + 1, stat.st_mode & ~S_IFMT);
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}
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TEST(DeletedTest, Truncate) {
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auto fd = ASSERT_NO_ERRNO_AND_VALUE(createdDeleted());
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const std::string data = "foobar";
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ASSERT_THAT(write(fd.get(), data.c_str(), data.size()), SyscallSucceeds());
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ASSERT_THAT(ftruncate(fd.get(), 0), SyscallSucceeds());
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struct stat stat;
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ASSERT_THAT(fstat(fd.get(), &stat), SyscallSucceeds());
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ASSERT_EQ(stat.st_size, 0);
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}
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TEST(DeletedTest, Fallocate) {
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auto fd = ASSERT_NO_ERRNO_AND_VALUE(createdDeleted());
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ASSERT_THAT(RetryEINTR(fallocate)(fd.get(), 0, 0, 123), SyscallSucceeds());
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struct stat stat;
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ASSERT_THAT(fstat(fd.get(), &stat), SyscallSucceeds());
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EXPECT_EQ(123, stat.st_size);
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}
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// Tests that a file can be created with the same path as a deleted file that
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// still have an open FD to it.
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TEST(DeletedTest, Replace) {
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auto path = NewTempAbsPath();
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auto fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path, O_RDWR | O_CREAT, mode));
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ASSERT_NO_ERRNO(Unlink(path));
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auto other =
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ASSERT_NO_ERRNO_AND_VALUE(Open(path, O_RDWR | O_CREAT | O_EXCL, mode));
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auto stat = ASSERT_NO_ERRNO_AND_VALUE(Fstat(fd.get()));
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auto stat_other = ASSERT_NO_ERRNO_AND_VALUE(Fstat(other.get()));
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ASSERT_NE(stat.st_ino, stat_other.st_ino);
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// Check that the path points to the new file.
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stat = ASSERT_NO_ERRNO_AND_VALUE(Stat(path));
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ASSERT_EQ(stat.st_ino, stat_other.st_ino);
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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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