78 lines
2.3 KiB
C++
78 lines
2.3 KiB
C++
// Copyright 2018 Google LLC
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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 <fcntl.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/un.h>
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#include "gtest/gtest.h"
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#include "test/util/capability_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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namespace gvisor {
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namespace testing {
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namespace {
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TEST(FchdirTest, Success) {
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auto temp_dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir());
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int fd;
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ASSERT_THAT(fd = open(temp_dir.path().c_str(), O_DIRECTORY | O_RDONLY),
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SyscallSucceeds());
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EXPECT_THAT(fchdir(fd), SyscallSucceeds());
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EXPECT_THAT(close(fd), SyscallSucceeds());
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// Change CWD to a permanent location as temp dirs will be cleaned up.
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EXPECT_THAT(chdir("/"), SyscallSucceeds());
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}
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TEST(FchdirTest, InvalidFD) {
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EXPECT_THAT(fchdir(-1), SyscallFailsWithErrno(EBADF));
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}
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TEST(FchdirTest, PermissionDenied) {
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// Drop capabilities that allow us to override directory permissions.
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ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false));
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ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false));
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auto temp_dir = ASSERT_NO_ERRNO_AND_VALUE(
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TempPath::CreateDirWith(GetAbsoluteTestTmpdir(), 0666 /* mode */));
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int fd;
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ASSERT_THAT(fd = open(temp_dir.path().c_str(), O_DIRECTORY | O_RDONLY),
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SyscallSucceeds());
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EXPECT_THAT(fchdir(fd), SyscallFailsWithErrno(EACCES));
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EXPECT_THAT(close(fd), SyscallSucceeds());
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}
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TEST(FchdirTest, NotDir) {
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auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
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int fd;
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ASSERT_THAT(fd = open(temp_file.path().c_str(), O_CREAT | O_RDONLY, 0777),
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SyscallSucceeds());
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EXPECT_THAT(fchdir(fd), SyscallFailsWithErrno(ENOTDIR));
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EXPECT_THAT(close(fd), SyscallSucceeds());
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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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