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
|
// 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 <linux/magic.h>
#include <sys/statfs.h>
#include <unistd.h>
#include "gtest/gtest.h"
#include "test/util/file_descriptor.h"
#include "test/util/temp_path.h"
#include "test/util/test_util.h"
namespace gvisor {
namespace testing {
namespace {
// From linux/magic.h. For some reason, not defined in the headers for some
// build environments.
#define OVERLAYFS_SUPER_MAGIC 0x794c7630
TEST(StatfsTest, CannotStatBadPath) {
auto temp_file = NewTempAbsPathInDir("/tmp");
struct statfs st;
EXPECT_THAT(statfs(temp_file.c_str(), &st), SyscallFailsWithErrno(ENOENT));
}
TEST(StatfsTest, InternalTmpfs) {
auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
struct statfs st;
EXPECT_THAT(statfs(temp_file.path().c_str(), &st), SyscallSucceeds());
}
TEST(StatfsTest, InternalDevShm) {
struct statfs st;
EXPECT_THAT(statfs("/dev/shm", &st), SyscallSucceeds());
// This assumes that /dev/shm is tmpfs.
// Note: We could be an overlay on some configurations.
EXPECT_TRUE(st.f_type == TMPFS_MAGIC || st.f_type == OVERLAYFS_SUPER_MAGIC);
}
TEST(FstatfsTest, CannotStatBadFd) {
struct statfs st;
EXPECT_THAT(fstatfs(-1, &st), SyscallFailsWithErrno(EBADF));
}
TEST(FstatfsTest, InternalTmpfs) {
auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
const FileDescriptor fd =
ASSERT_NO_ERRNO_AND_VALUE(Open(temp_file.path(), O_RDONLY));
struct statfs st;
EXPECT_THAT(fstatfs(fd.get(), &st), SyscallSucceeds());
}
TEST(FstatfsTest, InternalDevShm) {
auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
const FileDescriptor fd =
ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/shm", O_RDONLY));
struct statfs st;
EXPECT_THAT(fstatfs(fd.get(), &st), SyscallSucceeds());
}
} // namespace
} // namespace testing
} // namespace gvisor
|
