610 lines
21 KiB
C++
610 lines
21 KiB
C++
// Copyright 2019 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 <limits.h>
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#include <sys/types.h>
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#include <sys/xattr.h>
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#include <unistd.h>
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#include <string>
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#include <vector>
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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#include "absl/container/flat_hash_set.h"
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#include "test/syscalls/linux/file_base.h"
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#include "test/util/capability_util.h"
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#include "test/util/file_descriptor.h"
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#include "test/util/posix_error.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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class XattrTest : public FileTest {};
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TEST_F(XattrTest, XattrNonexistentFile) {
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const char* path = "/does/not/exist";
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const char* name = "user.test";
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EXPECT_THAT(setxattr(path, name, nullptr, 0, /*flags=*/0),
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SyscallFailsWithErrno(ENOENT));
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EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallFailsWithErrno(ENOENT));
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EXPECT_THAT(listxattr(path, nullptr, 0), SyscallFailsWithErrno(ENOENT));
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EXPECT_THAT(removexattr(path, name), SyscallFailsWithErrno(ENOENT));
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}
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TEST_F(XattrTest, XattrNullName) {
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const char* path = test_file_name_.c_str();
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EXPECT_THAT(setxattr(path, nullptr, nullptr, 0, /*flags=*/0),
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SyscallFailsWithErrno(EFAULT));
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EXPECT_THAT(getxattr(path, nullptr, nullptr, 0),
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SyscallFailsWithErrno(EFAULT));
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EXPECT_THAT(removexattr(path, nullptr), SyscallFailsWithErrno(EFAULT));
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}
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TEST_F(XattrTest, XattrEmptyName) {
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const char* path = test_file_name_.c_str();
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EXPECT_THAT(setxattr(path, "", nullptr, 0, /*flags=*/0),
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SyscallFailsWithErrno(ERANGE));
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EXPECT_THAT(getxattr(path, "", nullptr, 0), SyscallFailsWithErrno(ERANGE));
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EXPECT_THAT(removexattr(path, ""), SyscallFailsWithErrno(ERANGE));
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}
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TEST_F(XattrTest, XattrLargeName) {
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const char* path = test_file_name_.c_str();
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std::string name = "user.";
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name += std::string(XATTR_NAME_MAX - name.length(), 'a');
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// An xattr should be whitelisted before it can be accessed--do not allow
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// arbitrary xattrs to be read/written in gVisor.
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if (!IsRunningOnGvisor()) {
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EXPECT_THAT(setxattr(path, name.c_str(), nullptr, 0, /*flags=*/0),
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SyscallSucceeds());
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EXPECT_THAT(getxattr(path, name.c_str(), nullptr, 0),
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SyscallSucceedsWithValue(0));
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}
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name += "a";
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EXPECT_THAT(setxattr(path, name.c_str(), nullptr, 0, /*flags=*/0),
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SyscallFailsWithErrno(ERANGE));
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EXPECT_THAT(getxattr(path, name.c_str(), nullptr, 0),
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SyscallFailsWithErrno(ERANGE));
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EXPECT_THAT(removexattr(path, name.c_str()), SyscallFailsWithErrno(ERANGE));
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}
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TEST_F(XattrTest, XattrInvalidPrefix) {
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const char* path = test_file_name_.c_str();
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std::string name(XATTR_NAME_MAX, 'a');
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EXPECT_THAT(setxattr(path, name.c_str(), nullptr, 0, /*flags=*/0),
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SyscallFailsWithErrno(EOPNOTSUPP));
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EXPECT_THAT(getxattr(path, name.c_str(), nullptr, 0),
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SyscallFailsWithErrno(EOPNOTSUPP));
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EXPECT_THAT(removexattr(path, name.c_str()),
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SyscallFailsWithErrno(EOPNOTSUPP));
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}
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// Do not allow save/restore cycles after making the test file read-only, as
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// the restore will fail to open it with r/w permissions.
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TEST_F(XattrTest, XattrReadOnly_NoRandomSave) {
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// Drop capabilities that allow us to override file and 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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const char* path = test_file_name_.c_str();
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const char name[] = "user.test";
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char val = 'a';
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size_t size = sizeof(val);
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EXPECT_THAT(setxattr(path, name, &val, size, /*flags=*/0), SyscallSucceeds());
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DisableSave ds;
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ASSERT_NO_ERRNO(testing::Chmod(test_file_name_, S_IRUSR));
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EXPECT_THAT(setxattr(path, name, &val, size, /*flags=*/0),
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SyscallFailsWithErrno(EACCES));
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EXPECT_THAT(removexattr(path, name), SyscallFailsWithErrno(EACCES));
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char buf = '-';
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EXPECT_THAT(getxattr(path, name, &buf, size), SyscallSucceedsWithValue(size));
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EXPECT_EQ(buf, val);
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char list[sizeof(name)];
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EXPECT_THAT(listxattr(path, list, sizeof(list)),
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SyscallSucceedsWithValue(sizeof(name)));
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EXPECT_STREQ(list, name);
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}
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// Do not allow save/restore cycles after making the test file write-only, as
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// the restore will fail to open it with r/w permissions.
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TEST_F(XattrTest, XattrWriteOnly_NoRandomSave) {
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// Drop capabilities that allow us to override file and 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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DisableSave ds;
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ASSERT_NO_ERRNO(testing::Chmod(test_file_name_, S_IWUSR));
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const char* path = test_file_name_.c_str();
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const char name[] = "user.test";
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char val = 'a';
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size_t size = sizeof(val);
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EXPECT_THAT(setxattr(path, name, &val, size, /*flags=*/0), SyscallSucceeds());
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EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallFailsWithErrno(EACCES));
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// listxattr will succeed even without read permissions.
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char list[sizeof(name)];
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EXPECT_THAT(listxattr(path, list, sizeof(list)),
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SyscallSucceedsWithValue(sizeof(name)));
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EXPECT_STREQ(list, name);
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EXPECT_THAT(removexattr(path, name), SyscallSucceeds());
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}
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TEST_F(XattrTest, XattrTrustedWithNonadmin) {
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// TODO(b/148380782): Support setxattr and getxattr with "trusted" prefix.
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SKIP_IF(IsRunningOnGvisor());
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SKIP_IF(ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN)));
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const char* path = test_file_name_.c_str();
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const char name[] = "trusted.abc";
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EXPECT_THAT(setxattr(path, name, nullptr, 0, /*flags=*/0),
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SyscallFailsWithErrno(EPERM));
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EXPECT_THAT(removexattr(path, name), SyscallFailsWithErrno(EPERM));
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EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallFailsWithErrno(ENODATA));
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}
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TEST_F(XattrTest, XattrOnDirectory) {
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TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir());
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const char name[] = "user.test";
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EXPECT_THAT(setxattr(dir.path().c_str(), name, nullptr, 0, /*flags=*/0),
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SyscallSucceeds());
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EXPECT_THAT(getxattr(dir.path().c_str(), name, nullptr, 0),
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SyscallSucceedsWithValue(0));
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char list[sizeof(name)];
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EXPECT_THAT(listxattr(dir.path().c_str(), list, sizeof(list)),
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SyscallSucceedsWithValue(sizeof(name)));
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EXPECT_STREQ(list, name);
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EXPECT_THAT(removexattr(dir.path().c_str(), name), SyscallSucceeds());
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}
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TEST_F(XattrTest, XattrOnSymlink) {
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TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir());
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TempPath link = ASSERT_NO_ERRNO_AND_VALUE(
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TempPath::CreateSymlinkTo(dir.path(), test_file_name_));
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const char name[] = "user.test";
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EXPECT_THAT(setxattr(link.path().c_str(), name, nullptr, 0, /*flags=*/0),
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SyscallSucceeds());
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EXPECT_THAT(getxattr(link.path().c_str(), name, nullptr, 0),
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SyscallSucceedsWithValue(0));
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char list[sizeof(name)];
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EXPECT_THAT(listxattr(link.path().c_str(), list, sizeof(list)),
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SyscallSucceedsWithValue(sizeof(name)));
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EXPECT_STREQ(list, name);
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EXPECT_THAT(removexattr(link.path().c_str(), name), SyscallSucceeds());
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}
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TEST_F(XattrTest, XattrOnInvalidFileTypes) {
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const char name[] = "user.test";
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char char_device[] = "/dev/zero";
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EXPECT_THAT(setxattr(char_device, name, nullptr, 0, /*flags=*/0),
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SyscallFailsWithErrno(EPERM));
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EXPECT_THAT(getxattr(char_device, name, nullptr, 0),
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SyscallFailsWithErrno(ENODATA));
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EXPECT_THAT(listxattr(char_device, nullptr, 0), SyscallSucceedsWithValue(0));
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// Use tmpfs, where creation of named pipes is supported.
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const std::string fifo = NewTempAbsPathInDir("/dev/shm");
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const char* path = fifo.c_str();
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EXPECT_THAT(mknod(path, S_IFIFO | S_IRUSR | S_IWUSR, 0), SyscallSucceeds());
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EXPECT_THAT(setxattr(path, name, nullptr, 0, /*flags=*/0),
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SyscallFailsWithErrno(EPERM));
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EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallFailsWithErrno(ENODATA));
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EXPECT_THAT(listxattr(path, nullptr, 0), SyscallSucceedsWithValue(0));
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EXPECT_THAT(removexattr(path, name), SyscallFailsWithErrno(EPERM));
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}
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TEST_F(XattrTest, SetxattrSizeSmallerThanValue) {
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const char* path = test_file_name_.c_str();
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const char name[] = "user.test";
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std::vector<char> val = {'a', 'a'};
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size_t size = 1;
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EXPECT_THAT(setxattr(path, name, val.data(), size, /*flags=*/0),
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SyscallSucceeds());
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std::vector<char> buf = {'-', '-'};
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std::vector<char> expected_buf = {'a', '-'};
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EXPECT_THAT(getxattr(path, name, buf.data(), buf.size()),
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SyscallSucceedsWithValue(size));
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EXPECT_EQ(buf, expected_buf);
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}
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TEST_F(XattrTest, SetxattrZeroSize) {
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const char* path = test_file_name_.c_str();
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const char name[] = "user.test";
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char val = 'a';
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EXPECT_THAT(setxattr(path, name, &val, 0, /*flags=*/0), SyscallSucceeds());
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char buf = '-';
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EXPECT_THAT(getxattr(path, name, &buf, XATTR_SIZE_MAX),
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SyscallSucceedsWithValue(0));
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EXPECT_EQ(buf, '-');
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}
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TEST_F(XattrTest, SetxattrSizeTooLarge) {
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const char* path = test_file_name_.c_str();
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const char name[] = "user.test";
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// Note that each particular fs implementation may stipulate a lower size
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// limit, in which case we actually may fail (e.g. error with ENOSPC) for
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// some sizes under XATTR_SIZE_MAX.
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size_t size = XATTR_SIZE_MAX + 1;
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std::vector<char> val(size);
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EXPECT_THAT(setxattr(path, name, val.data(), size, /*flags=*/0),
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SyscallFailsWithErrno(E2BIG));
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EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallFailsWithErrno(ENODATA));
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}
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TEST_F(XattrTest, SetxattrNullValueAndNonzeroSize) {
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const char* path = test_file_name_.c_str();
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const char name[] = "user.test";
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EXPECT_THAT(setxattr(path, name, nullptr, 1, /*flags=*/0),
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SyscallFailsWithErrno(EFAULT));
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EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallFailsWithErrno(ENODATA));
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}
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TEST_F(XattrTest, SetxattrNullValueAndZeroSize) {
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const char* path = test_file_name_.c_str();
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const char name[] = "user.test";
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EXPECT_THAT(setxattr(path, name, nullptr, 0, /*flags=*/0), SyscallSucceeds());
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EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallSucceedsWithValue(0));
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}
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TEST_F(XattrTest, SetxattrValueTooLargeButOKSize) {
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const char* path = test_file_name_.c_str();
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const char name[] = "user.test";
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std::vector<char> val(XATTR_SIZE_MAX + 1);
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std::fill(val.begin(), val.end(), 'a');
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size_t size = 1;
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EXPECT_THAT(setxattr(path, name, val.data(), size, /*flags=*/0),
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SyscallSucceeds());
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std::vector<char> buf = {'-', '-'};
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std::vector<char> expected_buf = {'a', '-'};
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EXPECT_THAT(getxattr(path, name, buf.data(), size),
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SyscallSucceedsWithValue(size));
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EXPECT_EQ(buf, expected_buf);
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}
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TEST_F(XattrTest, SetxattrReplaceWithSmaller) {
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const char* path = test_file_name_.c_str();
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const char name[] = "user.test";
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std::vector<char> val = {'a', 'a'};
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EXPECT_THAT(setxattr(path, name, val.data(), 2, /*flags=*/0),
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SyscallSucceeds());
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EXPECT_THAT(setxattr(path, name, val.data(), 1, /*flags=*/0),
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SyscallSucceeds());
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std::vector<char> buf = {'-', '-'};
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std::vector<char> expected_buf = {'a', '-'};
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EXPECT_THAT(getxattr(path, name, buf.data(), 2), SyscallSucceedsWithValue(1));
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EXPECT_EQ(buf, expected_buf);
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}
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TEST_F(XattrTest, SetxattrReplaceWithLarger) {
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const char* path = test_file_name_.c_str();
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const char name[] = "user.test";
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std::vector<char> val = {'a', 'a'};
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EXPECT_THAT(setxattr(path, name, val.data(), 1, /*flags=*/0),
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SyscallSucceeds());
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EXPECT_THAT(setxattr(path, name, val.data(), 2, /*flags=*/0),
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SyscallSucceeds());
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std::vector<char> buf = {'-', '-'};
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EXPECT_THAT(getxattr(path, name, buf.data(), 2), SyscallSucceedsWithValue(2));
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EXPECT_EQ(buf, val);
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}
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TEST_F(XattrTest, SetxattrCreateFlag) {
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const char* path = test_file_name_.c_str();
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const char name[] = "user.test";
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EXPECT_THAT(setxattr(path, name, nullptr, 0, XATTR_CREATE),
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SyscallSucceeds());
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EXPECT_THAT(setxattr(path, name, nullptr, 0, XATTR_CREATE),
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SyscallFailsWithErrno(EEXIST));
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EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallSucceedsWithValue(0));
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}
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TEST_F(XattrTest, SetxattrReplaceFlag) {
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const char* path = test_file_name_.c_str();
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const char name[] = "user.test";
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EXPECT_THAT(setxattr(path, name, nullptr, 0, XATTR_REPLACE),
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SyscallFailsWithErrno(ENODATA));
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EXPECT_THAT(setxattr(path, name, nullptr, 0, /*flags=*/0), SyscallSucceeds());
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EXPECT_THAT(setxattr(path, name, nullptr, 0, XATTR_REPLACE),
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SyscallSucceeds());
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EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallSucceedsWithValue(0));
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}
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TEST_F(XattrTest, SetxattrInvalidFlags) {
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const char* path = test_file_name_.c_str();
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int invalid_flags = 0xff;
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EXPECT_THAT(setxattr(path, nullptr, nullptr, 0, invalid_flags),
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SyscallFailsWithErrno(EINVAL));
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}
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TEST_F(XattrTest, Getxattr) {
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const char* path = test_file_name_.c_str();
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const char name[] = "user.test";
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int val = 1234;
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size_t size = sizeof(val);
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EXPECT_THAT(setxattr(path, name, &val, size, /*flags=*/0), SyscallSucceeds());
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int buf = 0;
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EXPECT_THAT(getxattr(path, name, &buf, size), SyscallSucceedsWithValue(size));
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EXPECT_EQ(buf, val);
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}
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TEST_F(XattrTest, GetxattrSizeSmallerThanValue) {
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const char* path = test_file_name_.c_str();
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const char name[] = "user.test";
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std::vector<char> val = {'a', 'a'};
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size_t size = val.size();
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EXPECT_THAT(setxattr(path, name, &val, size, /*flags=*/0), SyscallSucceeds());
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char buf = '-';
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EXPECT_THAT(getxattr(path, name, &buf, 1), SyscallFailsWithErrno(ERANGE));
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EXPECT_EQ(buf, '-');
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}
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TEST_F(XattrTest, GetxattrSizeLargerThanValue) {
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const char* path = test_file_name_.c_str();
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const char name[] = "user.test";
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char val = 'a';
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EXPECT_THAT(setxattr(path, name, &val, 1, /*flags=*/0), SyscallSucceeds());
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std::vector<char> buf(XATTR_SIZE_MAX);
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std::fill(buf.begin(), buf.end(), '-');
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std::vector<char> expected_buf = buf;
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expected_buf[0] = 'a';
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EXPECT_THAT(getxattr(path, name, buf.data(), buf.size()),
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SyscallSucceedsWithValue(1));
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EXPECT_EQ(buf, expected_buf);
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}
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TEST_F(XattrTest, GetxattrZeroSize) {
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const char* path = test_file_name_.c_str();
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const char name[] = "user.test";
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char val = 'a';
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EXPECT_THAT(setxattr(path, name, &val, sizeof(val), /*flags=*/0),
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SyscallSucceeds());
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char buf = '-';
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EXPECT_THAT(getxattr(path, name, &buf, 0),
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SyscallSucceedsWithValue(sizeof(val)));
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EXPECT_EQ(buf, '-');
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}
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TEST_F(XattrTest, GetxattrSizeTooLarge) {
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const char* path = test_file_name_.c_str();
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const char name[] = "user.test";
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char val = 'a';
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EXPECT_THAT(setxattr(path, name, &val, sizeof(val), /*flags=*/0),
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SyscallSucceeds());
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std::vector<char> buf(XATTR_SIZE_MAX + 1);
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std::fill(buf.begin(), buf.end(), '-');
|
|
std::vector<char> expected_buf = buf;
|
|
expected_buf[0] = 'a';
|
|
EXPECT_THAT(getxattr(path, name, buf.data(), buf.size()),
|
|
SyscallSucceedsWithValue(sizeof(val)));
|
|
EXPECT_EQ(buf, expected_buf);
|
|
}
|
|
|
|
TEST_F(XattrTest, GetxattrNullValue) {
|
|
const char* path = test_file_name_.c_str();
|
|
const char name[] = "user.test";
|
|
char val = 'a';
|
|
size_t size = sizeof(val);
|
|
EXPECT_THAT(setxattr(path, name, &val, size, /*flags=*/0), SyscallSucceeds());
|
|
|
|
EXPECT_THAT(getxattr(path, name, nullptr, size),
|
|
SyscallFailsWithErrno(EFAULT));
|
|
}
|
|
|
|
TEST_F(XattrTest, GetxattrNullValueAndZeroSize) {
|
|
const char* path = test_file_name_.c_str();
|
|
const char name[] = "user.test";
|
|
char val = 'a';
|
|
size_t size = sizeof(val);
|
|
// Set value with zero size.
|
|
EXPECT_THAT(setxattr(path, name, &val, 0, /*flags=*/0), SyscallSucceeds());
|
|
// Get value with nonzero size.
|
|
EXPECT_THAT(getxattr(path, name, nullptr, size), SyscallSucceedsWithValue(0));
|
|
|
|
// Set value with nonzero size.
|
|
EXPECT_THAT(setxattr(path, name, &val, size, /*flags=*/0), SyscallSucceeds());
|
|
// Get value with zero size.
|
|
EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallSucceedsWithValue(size));
|
|
}
|
|
|
|
TEST_F(XattrTest, GetxattrNonexistentName) {
|
|
const char* path = test_file_name_.c_str();
|
|
const char name[] = "user.test";
|
|
EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallFailsWithErrno(ENODATA));
|
|
}
|
|
|
|
TEST_F(XattrTest, Listxattr) {
|
|
const char* path = test_file_name_.c_str();
|
|
const std::string name = "user.test";
|
|
const std::string name2 = "user.test2";
|
|
const std::string name3 = "user.test3";
|
|
EXPECT_THAT(setxattr(path, name.c_str(), nullptr, 0, /*flags=*/0),
|
|
SyscallSucceeds());
|
|
EXPECT_THAT(setxattr(path, name2.c_str(), nullptr, 0, /*flags=*/0),
|
|
SyscallSucceeds());
|
|
EXPECT_THAT(setxattr(path, name3.c_str(), nullptr, 0, /*flags=*/0),
|
|
SyscallSucceeds());
|
|
|
|
std::vector<char> list(name.size() + 1 + name2.size() + 1 + name3.size() + 1);
|
|
char* buf = list.data();
|
|
EXPECT_THAT(listxattr(path, buf, XATTR_SIZE_MAX),
|
|
SyscallSucceedsWithValue(list.size()));
|
|
|
|
absl::flat_hash_set<std::string> got = {};
|
|
for (char* p = buf; p < buf + list.size(); p += strlen(p) + 1) {
|
|
got.insert(std::string{p});
|
|
}
|
|
|
|
absl::flat_hash_set<std::string> expected = {name, name2, name3};
|
|
EXPECT_EQ(got, expected);
|
|
}
|
|
|
|
TEST_F(XattrTest, ListxattrNoXattrs) {
|
|
const char* path = test_file_name_.c_str();
|
|
|
|
std::vector<char> list, expected;
|
|
EXPECT_THAT(listxattr(path, list.data(), sizeof(list)),
|
|
SyscallSucceedsWithValue(0));
|
|
EXPECT_EQ(list, expected);
|
|
|
|
// Listxattr should succeed if there are no attributes, even if the buffer
|
|
// passed in is a nullptr.
|
|
EXPECT_THAT(listxattr(path, nullptr, sizeof(list)),
|
|
SyscallSucceedsWithValue(0));
|
|
}
|
|
|
|
TEST_F(XattrTest, ListxattrNullBuffer) {
|
|
const char* path = test_file_name_.c_str();
|
|
const char name[] = "user.test";
|
|
EXPECT_THAT(setxattr(path, name, nullptr, 0, /*flags=*/0), SyscallSucceeds());
|
|
|
|
EXPECT_THAT(listxattr(path, nullptr, sizeof(name)),
|
|
SyscallFailsWithErrno(EFAULT));
|
|
}
|
|
|
|
TEST_F(XattrTest, ListxattrSizeTooSmall) {
|
|
const char* path = test_file_name_.c_str();
|
|
const char name[] = "user.test";
|
|
EXPECT_THAT(setxattr(path, name, nullptr, 0, /*flags=*/0), SyscallSucceeds());
|
|
|
|
char list[sizeof(name) - 1];
|
|
EXPECT_THAT(listxattr(path, list, sizeof(list)),
|
|
SyscallFailsWithErrno(ERANGE));
|
|
}
|
|
|
|
TEST_F(XattrTest, ListxattrZeroSize) {
|
|
const char* path = test_file_name_.c_str();
|
|
const char name[] = "user.test";
|
|
EXPECT_THAT(setxattr(path, name, nullptr, 0, /*flags=*/0), SyscallSucceeds());
|
|
EXPECT_THAT(listxattr(path, nullptr, 0),
|
|
SyscallSucceedsWithValue(sizeof(name)));
|
|
}
|
|
|
|
TEST_F(XattrTest, RemoveXattr) {
|
|
const char* path = test_file_name_.c_str();
|
|
const char name[] = "user.test";
|
|
EXPECT_THAT(setxattr(path, name, nullptr, 0, /*flags=*/0), SyscallSucceeds());
|
|
EXPECT_THAT(removexattr(path, name), SyscallSucceeds());
|
|
EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallFailsWithErrno(ENODATA));
|
|
}
|
|
|
|
TEST_F(XattrTest, RemoveXattrNonexistentName) {
|
|
const char* path = test_file_name_.c_str();
|
|
const char name[] = "user.test";
|
|
EXPECT_THAT(removexattr(path, name), SyscallFailsWithErrno(ENODATA));
|
|
}
|
|
|
|
TEST_F(XattrTest, LXattrOnSymlink) {
|
|
const char name[] = "user.test";
|
|
TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir());
|
|
TempPath link = ASSERT_NO_ERRNO_AND_VALUE(
|
|
TempPath::CreateSymlinkTo(dir.path(), test_file_name_));
|
|
|
|
EXPECT_THAT(lsetxattr(link.path().c_str(), name, nullptr, 0, 0),
|
|
SyscallFailsWithErrno(EPERM));
|
|
EXPECT_THAT(lgetxattr(link.path().c_str(), name, nullptr, 0),
|
|
SyscallFailsWithErrno(ENODATA));
|
|
EXPECT_THAT(llistxattr(link.path().c_str(), nullptr, 0),
|
|
SyscallSucceedsWithValue(0));
|
|
EXPECT_THAT(lremovexattr(link.path().c_str(), name),
|
|
SyscallFailsWithErrno(EPERM));
|
|
}
|
|
|
|
TEST_F(XattrTest, LXattrOnNonsymlink) {
|
|
const char* path = test_file_name_.c_str();
|
|
const char name[] = "user.test";
|
|
int val = 1234;
|
|
size_t size = sizeof(val);
|
|
EXPECT_THAT(lsetxattr(path, name, &val, size, /*flags=*/0),
|
|
SyscallSucceeds());
|
|
|
|
int buf = 0;
|
|
EXPECT_THAT(lgetxattr(path, name, &buf, size),
|
|
SyscallSucceedsWithValue(size));
|
|
EXPECT_EQ(buf, val);
|
|
|
|
char list[sizeof(name)];
|
|
EXPECT_THAT(llistxattr(path, list, sizeof(list)),
|
|
SyscallSucceedsWithValue(sizeof(name)));
|
|
EXPECT_STREQ(list, name);
|
|
|
|
EXPECT_THAT(lremovexattr(path, name), SyscallSucceeds());
|
|
}
|
|
|
|
TEST_F(XattrTest, XattrWithFD) {
|
|
const FileDescriptor fd =
|
|
ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_.c_str(), 0));
|
|
const char name[] = "user.test";
|
|
int val = 1234;
|
|
size_t size = sizeof(val);
|
|
EXPECT_THAT(fsetxattr(fd.get(), name, &val, size, /*flags=*/0),
|
|
SyscallSucceeds());
|
|
|
|
int buf = 0;
|
|
EXPECT_THAT(fgetxattr(fd.get(), name, &buf, size),
|
|
SyscallSucceedsWithValue(size));
|
|
EXPECT_EQ(buf, val);
|
|
|
|
char list[sizeof(name)];
|
|
EXPECT_THAT(flistxattr(fd.get(), list, sizeof(list)),
|
|
SyscallSucceedsWithValue(sizeof(name)));
|
|
EXPECT_STREQ(list, name);
|
|
|
|
EXPECT_THAT(fremovexattr(fd.get(), name), SyscallSucceeds());
|
|
}
|
|
|
|
} // namespace
|
|
|
|
} // namespace testing
|
|
} // namespace gvisor
|