1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
// Copyright 2018 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 <fcntl.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/un.h>
#include "gtest/gtest.h"
#include "test/util/capability_util.h"
#include "test/util/temp_path.h"
#include "test/util/test_util.h"
namespace gvisor {
namespace testing {
namespace {
TEST(FchdirTest, Success) {
auto temp_dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir());
int fd;
ASSERT_THAT(fd = open(temp_dir.path().c_str(), O_DIRECTORY | O_RDONLY),
SyscallSucceeds());
EXPECT_THAT(fchdir(fd), SyscallSucceeds());
EXPECT_THAT(close(fd), SyscallSucceeds());
// Change CWD to a permanent location as temp dirs will be cleaned up.
EXPECT_THAT(chdir("/"), SyscallSucceeds());
}
TEST(FchdirTest, InvalidFD) {
EXPECT_THAT(fchdir(-1), SyscallFailsWithErrno(EBADF));
}
TEST(FchdirTest, PermissionDenied) {
// Drop capabilities that allow us to override directory permissions.
AutoCapability cap1(CAP_DAC_OVERRIDE, false);
AutoCapability cap2(CAP_DAC_READ_SEARCH, false);
auto temp_dir = ASSERT_NO_ERRNO_AND_VALUE(
TempPath::CreateDirWith(GetAbsoluteTestTmpdir(), 0666 /* mode */));
int fd;
ASSERT_THAT(fd = open(temp_dir.path().c_str(), O_DIRECTORY | O_RDONLY),
SyscallSucceeds());
EXPECT_THAT(fchdir(fd), SyscallFailsWithErrno(EACCES));
EXPECT_THAT(close(fd), SyscallSucceeds());
}
TEST(FchdirTest, NotDir) {
auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
int fd;
ASSERT_THAT(fd = open(temp_file.path().c_str(), O_CREAT | O_RDONLY, 0777),
SyscallSucceeds());
EXPECT_THAT(fchdir(fd), SyscallFailsWithErrno(ENOTDIR));
EXPECT_THAT(close(fd), SyscallSucceeds());
}
TEST(FchdirTest, FchdirWithOpath) {
SKIP_IF(IsRunningWithVFS1());
auto temp_dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir());
FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(temp_dir.path(), O_PATH));
ASSERT_THAT(open(temp_dir.path().c_str(), O_DIRECTORY | O_PATH),
SyscallSucceeds());
EXPECT_THAT(fchdir(fd.get()), SyscallSucceeds());
// Change CWD to a permanent location as temp dirs will be cleaned up.
EXPECT_THAT(chdir("/"), SyscallSucceeds());
}
} // namespace
} // namespace testing
} // namespace gvisor
|
